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Described are photochromic articles that include a substrate, a temperature dependent reducing amount of at least one organic photochromic material (b) that changes from more absorbing to less absorbing of radiation in its activating spectral absorbance as the temperature increases from 10�� C. to 3

Described are photochromic articles that include a substrate, a temperature dependent reducing amount of at least one organic photochromic material (b) that changes from more absorbing to less absorbing of radiation in its activating spectral absorbance as the temperature increases from 10�� C. to 35�� C. and at least one other photochromic material (c) that is different from photochromic material (b). In the article, photochromic material (b) is interposed between photochromic material (c) and a source of activating radiation. The photochromic article demonstrates a more consistent photochromic response, for example, an optical density response loss of 50 percent or less over a temperature range of from 10�� C. to 35�� C. as measured in the Photochromic Temperature Dependence Test. Methods for producing the aforedescribed articles are also disclosed.

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We claim: 1. A photochromic article demonstrating consistent photochromic response over a broad temperature range comprising: a) a substrate; b) a temperature dependent reducing amount of at least one organic photochromic material associated with said substrate, said photochromic material having a

We claim: 1. A photochromic article demonstrating consistent photochromic response over a broad temperature range comprising: a) a substrate; b) a temperature dependent reducing amount of at least one organic photochromic material associated with said substrate, said photochromic material having a temperature dependent variable absorbance that changes from more absorbing to less absorbing of radiation in its activating spectral absorbance as the temperature increases from 10�� C. to 35�� C.; and c) at least one other organic photochromic material (c) associated with said substrate that is different from photochromic material (b); said photochromic material (b) being used in a coating or film on the surface of the substrate and interposed between photochromic material (c) and a source of activating radiation, wherein the substituent groups of photochromic material (b) are chosen such that said photochromic article exhibits an activated optical density response loss of 50 percent or less as measured in the Photochromic Temperature Dependence Test, said photochromic material (b) being chosen from: (1) a naphthopyran compound represented by the following graphic formula I: wherein (a) R1 and R2 are each independently chosen from: (i) hydrogen, hydroxy, C1-C6 alkyl, C1-C8 haloalkyl, C3-C7 cycloalkyl, or the group,--C(O)W, wherein W is hydroxy, C1-C6 alkyl, C1-C6 alkoxy , di(C1-C6)alkylamino, morpholino or piperidino; (ii) the group,--OR8 wherein R8 is C1-C6 alkyl, C1-C6 acyl, C1-C8 haloalkyl, phenyl(C1-C3)alkyl or the group--CH(R9)Q, wherein R9 is hydrogen or C1-C3 alkyl and Q is--COOR10, and R10 is hydrogen or C1-C3 alkyl; (iii) the group--CH(R12)G, wherein R12 is hydrogen or C1-C6 alkyl, and G is--COOR11, wherein R11 is hydrogen or C1-C6 alkyl; or (iv) the group T represented by the formula: description="In-line Formulae" end="lead"-Z[(OC2H4)x(OC3H6 )y(OC4H8)z]Z' ordescription="In-line Formulae" end="tail" description="In-line Formulae" end="lead"--[(OC2H4)x(OC3H6 )y(OC4H8)z]Z'description="In-line Formulae" end="tail" wherein-Z is--C(O)--or--CH2--, Z' is C1-C3 alkoxy or a polymerizable group, x, y and z are each a number between 0 and 50, and the sum of x, y and z is between 2 and 50; or (v) R1 and R2 together form R3 chosen from a substituted or unsubstituted spiro-carbocyclic ring containing 5 to 6 carbon atoms, said spiro-carbocyclic ring being annellated with 0, 1 or 2 benzene rings, said substituents being hydrogen or C1-C6 alkyl; (b) R4 and R7 are each independently chosen from hydrogen, provided that both are not hydrogen, the group T,--OR7' wherein R7' is chosen from C1-C6 alkyl, phenyl(C1-C6)alkyl or C1-C6 alkoxy(C1-C6)alkyl or R4 and R7 are each independently a nitrogen-containing group chosen from: (i)--N(R15)R16 wherein R15 and R16 are each independently chosen from hydrogen, C1-C8 alkyl or R15 and R16 come together with the nitrogen atom to form a C3-C20 hetero-bicycloalkyl ring or a C4-C20 hetero-tricycloalkyl ring; (ii) a nitrogen containing ring represented by the following graphic formula: wherein each Y is--CH2--, and X is chosen from--Y--,--O--,--S--,--S(O)--,--S(O2)--,--NH--,--N(R17)--or--N(aryl)-, wherein R17 is C1-C6 alkyl, said aryl is phenyl or naphthyl, m is the integer 1, 2 or 3, and p is the integer 0, 1, 2, or 3 and when p is O, X is Y; or (iii) a group represented by one of the following graphic formulae: wherein R19, R20 and R21 are each independently chosen for each occurrence in each formula from hydrogen or C1-C6 alkyl, or the groups R19 and R20 together form a ring of 5 to 8 carbon atoms and each R18 is C1-C6 alkyl and p being the integer 0, 1, 2 or 3; (c) R5 and R6 are each independently chosen from hydrogen, C1-C6 alkyl, C1-C6 haloalkyl, the group T,--OR7', described hereinbefore in (b) or nitrogen-containing group (b) (i), (ii) or (iii); and (d) B and B' are each independently chosen from: (i) mono-T-substituted phenyl; (ii) the unsubstituted, mono-, di-, or tri-substituted aryl groups, phenyl or naphthyl, each of said aryl substituents being chosen from hydroxy, aryl, morpholino, C1-C8 alkoxy (C1-C8)alkoxy, aryl(C1-C6)alkyl, aryloxy, C1-C6 alkyl, C1C6 haloalkyl, C1-C6 alkoxy, acryloxy, methacryloxy, halogen,--CF3,--CN or--COOR11; wherein R11 is the same as described hereinbefore; or (iii) mono-substituted phenyl, said substituent located at the para position being--(CH2)t--or--O--(CH2)t--, wherein t is the integer 1, 2, 3, 4, 5 or 6, said substituent being connected to an aryl group on another photochromic material; (2) a naphthopyran compound represented by the following graphic formula II: wherein; R1, R2, R4, B and B' are the same groups described hereinbefore in (1) (a), (b) and (d); R3' is--OR8', wherein R8' is C1-C6 alkyl or phenyl(C1-C3)alkyl; or R3' is chosen from hydrogen, C1-C6 alkyl or C1-C6 haloalkyl; (3) a naphthopyran compound represented by graphic formula III: wherein; R1, R2, R4, B and B' are the same groups described hereinbefore in (1) (a), (b) and (d); each R22 is independently chosen from hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, C1-C6 haloalkyl or--OR8', which was described hereinbefore in (2), and n is the integer 0, 1, 2, or 3; (4) a naphthopyran compound represented by the following graphic formula IV: wherein; (a) R23 is--C(O)L, or--C(R27) (R28)OR11, wherein L is--OR11,--N(R15)R16, (2-(2-hydroxyethoxy)ethoxy) or an unsubstituted, mono-substituted or di-substituted heterocyclic ring chosen from 1-indolinyl, morpholino, piperidino, 1-pyrrolidyl or 1-piperazinyl, said heterocyclic ring substituents being C1-C6 alkyl; R11, R15, and R16 are the same as described hereinbefore in (1) (a) (iii) and (b) (i); R27 and R28 are each independently chosen from C1-C6 alkyl, C3-C7 cycloalkyl, C1-C6 haloalkyl or phenyl; (b) R24 is hydrogen, C1-C6 alkyl, C3C7 cycloalkyl, mono-or di-(C1-C6)alkylaryl, mono-or di-(C1-C6)alkoxyaryl, C1-C6 haloalkyl, phenyl or naphthyl; (c) R25 and R26 are each independently chosen from hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, C1-C6 haloalkyl, the group T, described hereinbefore in (1) (a) (iv)--OR8', described hereinbefore in (2) or said nitrogen-containing group (1) (b) (i), (ii), or (iii) described hereinbefore or R25 and R26 together form one of the following graphic formulae: wherein J and K are each independently chosen for each occurrence in each formula from oxygen or the group--N(R15)--, R15, R19 and R20, are the same groups described hereinbefore in (1) (b) (i) and (iii); and (d) B and B' are the same roups described hereinbefore in (1) (d); (5) a naphthopyran represented by the following graphic formula V: wherein; (a) R22 and n are the same as described hereinbefore in (3); R29 is hydroxy, C1-C6 alkyl, C3-C7 cycloalkyl, C1-C6 haloalkyl, aryl, mono(C1-C6)alkoxyaryl, di(C1-C6)alkoxyaryl, mono(C1-C5)alkylaryl, di(C1-C6)alkylaryl, haloaryl, di(C1-C6)alkylaminoaryl, the group T described hereinbefore in (1) (a) (iv),--OR8' described hereinbefore in (2), or said nitrogen-containing group (1) (b) (i), (ii) or (iii) described hereinbefore; (b) R30 is hydrogen or R23 described hereinbefore in (4) (a); and (c) B and B' are the same groups described hereinbefore in (1) (d); (6) a naphthopyran compound represented by the following graphic formula VI: wherein (a) R31 is hydrogen or R29 described hereinbefore in (5) (a); (b) R32 is C1-C6 alkyl, C1-C6 alkoxy or C1-C6 haloalkyl, n is the same as described hereinbefore in (3); and (c) B and B' are the same groups described hereinbefore in (1) (d); and (7) a naphthopyran represented by the following graphic formula VII: wherein: each R22 and n are the same as described hereinbefore in (3); R23 and R24 are the same as described hereinbefore in (4) (a) and (b); B and B' are the same as described hereinbefore in (1) (d); (8) a naphthopyran represented by the following graphic formula VIII: wherein, (a) R33 and R34 together form an oxo group or R33 is hydrogen and R34 is hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, allyl, phenyl, mono-or di-substituted phenyl, benzyl, mono-substituted benzyl, linear or branched C3-C12 alkenyl, C1-C6 alkoxy carbonyl (C1-C6) alkyl, methacryloxy(C1-C6)alkyl, acryloxy(C1C6)alkyl, C1-C4 acyloxy(C1-C6)alkyl, each of said phenyl or benzyl substituents being C1-C6 alkyl, C1-C6 alkoxy, morpholino, di(C1-C6)alkylamino, chioro or fluoro; (b) each R35 is independently chosen for each occurrence from C1-C6 alkyl, C1-C6 alkoxy, chloro, fluoro, phenyl, C3-C7 cycloalkyl, di(C1-C6)alkylamino, morpholino, thiomorpholino, piperidino, pyridyl, N--(C1-C6)alkyl piperizino or N-phenyl piperizino, and s is the integer 0, 1 or 2; (c) D is oxygen or--N(R36)--, wherein R36 is hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, C1-C5 acyl or phenyl; (d) E is oxygen,--N(R36)--or--C(R37) (R38)--, wherein R37 and R38 are each independently chosen from hydrogen, C1-C6 alkyl or C3-C7 cycloalkyl, with the proviso that when E is--C(R37) (R38)--, D is oxygen; and (e) M and M' are each chosen from the urisubstituted, mono--, di-or tri-substituted aryl group, phenyl or naphthyl; each of said aryl substituents being chosen from hydroxy, phenyl, morpholino, naphthylaryl(C1-C6)alkyl, aryloxy, C1-C6 alkyl, C1-C6 chloroalkyl, C1-C6 fluoroalkyl, C1-C6 alkoxy, acryloxy, methacryloxy, bromo, chloro or fluoro; or (9) mixtures thereof. 2. The photochromic article of claim 1 wherein the photochromic article is adapted to exhibit an activated optical density response loss of 35 percent or less as measured in the Photochromic Temperature Dependence Test. 3. The photochromic article of claim 2 wherein the photochromic article is adapted to exhibit an activated optical density response loss of 20 percent or less as measured in the Photochromic Temperature Dependence Test. 4. The photochromic article of claim 1 wherein photochromic material (b) is chosen from: (1) the naphthopyran represented by graphic I wherein, (a) R1 and R2 are each independently chosen from: (i) hydrogen, hydroxy, C1-C6 alkyl, C1-C6 haloalkyl, or C3-C7 cycloalkyl, (ii) the group,--OR8 wherein R8 is C1-C6 alkyl, C1-C6 acyl, or R8 is the group--CH(R9)Q, wherein R9 is hydrogen or C1-C3 alkyl and Q is--COOR10, and R10 is C1-C3 alkyl; (iii) the group--CH(R12)G, wherein R12 is hydrogen or C1-C6 alkyl, and G is--COOR11, wherein R11 is C1-C6 alkyl; or (iv) the group T represented by the formula: description="In-line Formulae" end="lead"-Z[(OC2H4)x(OC3H6 )y(OC4H8)z]Z'description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"ordescription="In-line Formulae" end="tail" description="In-line Formulae" end="lead"--[(OC2H4)x(OC3H6 )y(OC4H8)z]Z'description="In-line Formulae" end="tail" wherein-Z is--CH2--, Z' is C1-C3 alkoxy or a polymerizable group, x, y and z are each a number between 0 and 50, and the sum of x, y and z is between 2 and 50; or (viii) R1 and R2 together form R3 chosen from a substituted or unsubstituted spiro-carbocyclic ring containing 5 to 6 carbon atoms, said spiro-carbocyclic ring being annellated with 0, 1 or 2 benzene rings, said substituents being hydrogen or C2-C6 alkyl; (b) R4 and R7 are each independently chosen from hydrogen and, the group--OR7' wherein 27' is chosen from C1-C3 alkyl, phenyl(C1-C2)alkyl, or C1-C3 alkoxy(C1-C3)alkyl, or R4 and R7 are each independently a nitrogen-containing group chosen from: (i)--N(R15)R16 wherein R15 and R16 are each independently chosen from C1-C8 alkyl, (ii) a nitrogen containing ring represented by the following graphic formula: wherein each Y is independently chosen for each occurrence from--CH2--, and X is chosen from--Y--, O--,--S--,--NH--,--N(R17)--or--N(aryl)-, wherein R17 is C1-C6 alkyl, said aryl group being phenyl or naphthyl, m is the integer 1, 2 or 3, and p is the integer 0, 1, 2, or 3 and when p is O, X is Y; or (iii) a group represented by the following graphic formulae: wherein R19, R20 and R21 are each independently chosen for each occurrence in each formula from hydrogen or C1-C6 alkyl, each R18 is independently chosen for each occurrence from C1-C3 alkyl, and p is the same as described hereinbefore in (ii), provided that both R4 and R7 are not hydrogen; (c) R5 and R6 are each independently chosen from hydrogen, C1-C6 alkyl, the group T, described hereinbefore in (a) (iv),--OR7', described hereinbefore in (b) or nitrogen-containing group (b) (i) (ii) or (iii); and (d) B and B' are each chosen from: (i) mono-T-substituted phenyl (ii) the unsubstituted, mono-, or di-substituted aryl groups, phenyl or naphthyl, each of said aryl substituents being chosen from aryl, morpholino C1-C6 alkyl, C1-C6 haloalkyl, C1-C6 alkoxy, acryloxy, methacryloxy, halogen,--CF3,--CM or--COOR11; (iii) mono-substituted phenyl, said substituent located at the para position being--(CH2)t--or--O--(CH2)t--, wherein t is the integer 1, 2, 3, 4, 5 or 6, said substituent being connected to an aryl group on another photochromic material; (2) the naphthopyran represented by graphic formula II wherein: R1, R2, R4, B and B' are the same groups described hereinbefore in (1) (a) (b) and (d); R3' is--OR8', wherein R8' is C1-C3 alkyl, or phenyl(C1-C2)alkyl, or R3' is hydrogen, C1-C6 alkyl, or C1-C6 haloalkyl; (3) the naphthopyran represented by graphic formula III wherein: R1, R2, R4, B and B' are the same groups described hereinbefore in (i) (a) (b) and (d); each R22 is independently chosen for each occurrence from hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, or--OR8', which was described hereinbefore, and n is the integer 0, 1, 2, or 3; (4) the naphthopyran represented by graphic formula TV wherein: (a) R23 is--C(O)L, or--(CR27)(R28)OR11, wherein L is--OR11,--N(R15)R16 or (2-(2-hydroxyethoxy)ethoxy); R11, R15, and R16 are the same as described hereinbefore in (1) (a) (iii) and (b) (i); R27 and R28 are each independently chosen from C1-C6 alkyl, C3-C7 cycloalkyl, or; (b) R24 is hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, C1-C6 haloalkyl or phenyl; (c) R25 and R26 are each independently chosen from hydrogen, C1-C6 alkyl, C1-C6 haloalkyl, the group--OR8' described hereinbefore in (2) or nitrogen-containing group (1) (b) (i), (ii) or (iii) described hereinbefore; (d) B and B' are the same groups described hereinbefore in (1) (d); (5) the naphthopyran represented by graphic formula V wherein: (a) R22 and n are the same as described hereinbefore in (3), R29 is hydroxy, C1-C6 alkyl, C3-C7 cycloalkyl, C1-C6 haloalkyl, aryl, mono(C1-C6)alkoxyaryl, di(C1-C6)alkoxyaryl, haloaryl, di(C1-C6)alkylaminoaryl, the group T, described hereinbefore in (1) (a) (iv)--OR8', described hereinbefore in (2) or nitrogen-containing group (1) (b) (i), (ii) or (iii) described hereinbefore: (b) R30 is hydrogen or R23 described hereinbefore in (4) (a); and (c) B and B' are the same groups described hereinbefore in (1) (d); (6) the naphthopyran represented by graphic formula VI wherein: (a) R31 is hydrogen or R29 described hereinbefore in (5) (a); (b) R32 is hydrogen; and (c) B and B' are the same groups described hereinbefore in (1) (d); (7) the naphthopyran represented by graphic formula VII wherein: each a22 and n are the same as described hereinbefore in (3); R23 and R24 are the same as described hereinbefore in (4) (a) and (b); B, and B' are the same as described hereinbefore in (1) (d); (8) the naphthopyran represented by graphic formula VIII wherein: (a) R33 is hydrogen and R34 is chosen from hydrogen, C1-C5 alkyl, C3-C6 cycloalkyl, phenyl, mono-or di-substituted phenyl, benzyl or mono-substituted benzyl, each of said phenyl and benzyl group substituents being C1-C4 alkyl or C1-C4 alkoxy; (b) R35 is C1-C4 alkyl, C1-C4 alkoxy, fluoro, or phenyl, and s is the integer 0, 1, or 2; (c) D is oxygen or--N(R36)--, wherein H36 is hydrogen, or C1-C3 alkyl; (d) E is oxygen,--NH--or--CH2--; and (e) M and M' are each independently chosen from: (i) phenyl, mono-substituted phenyl or di-substituted phenyl, each of said phenyl substituents being aryloxy, morpholino, C1-C3 alkyl, C1-C3 chloroalkyl, C1-C3 fluoroalkyl, C1-C3 alkoxy, fluoro or chioro; or (9) mixtures thereof. 5. The photochromic article of claim 1 wherein photochromic material (b) is chosen from: (1) a photochromic material represented by graphic formula I chosen from: (a) 3-(4-methoxyphenyl)-3-phenyl-6,7,10,11-tetramethoxy-13-ethyl-13-hydroxyl3H-3H-indeno[2,'3'3,4]naphtho[1,2-b]pyran; (b) 3,3-di(4-methoxyphenyl)-6,11-dimethoxy-13-butyl-13-ethoxy-13H-31H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (c) 3-(4-methoxyphenyl)-3-phenyl-6,11-dimethoxy-13-methyl-13-(2-(2hydroxyethoxy)ethoxy)-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (d) 3,3-di(4-methoxyphenyl)-11-morpholino-13,13-dimethyl-13H-3H-indeno[2,'3, '3,4)naphtho[1,2-b]pyran; (e) 3-(4-morpholinophenyl)-3-phenyl-11-morpholino-13,13-dimethyl-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (f) 3-(4-methoxyphenyl)-3-phenyl-10,11-dimethoxy-13,13-dimethyl-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (g) 3-(4-methoxyphenyl)-3-phenyl-13,13-dimethyl-13H3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (h) 3,3-di(4-methoxyethoxyphenyl)-11-morpholino-13,13-dimethyl-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (i) 3,3-diphenyl-6,11-dimethoxy-13-acetoxy-13H-3H-indeno[2,'3,'3,4]naphtho[1, 2-b]pyran; (j) 3-(4-methoxyphenyl)-3-phenyl-6,10, 11-trimethoxy-13-methyl-13-hydroxy-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b] pyran; (k) 3-(4-morpholinophenyl)-3-(4-methoxyphenyl) 11-morpholino-13,13-dimethyl-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (l) 3-(3,4-dimethoxyphenyl)-3-(4-methoxyphenyl)-11-morpholino-13, 13-dimethyl-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (m) 3-(4-methoxyphenyl)-3-phenyl-6,7,10, 11-tetramethoxy-13-13-dimethyl-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b] pyran; (n) 3-(4-methoxyphenyl)-3-phenyl-6,7,10, 11-tetramethoxy-13-trifluromethyl-13-hydroxy-13H-3H-indeno[2,'3,'3,4] naphtho[1,2b]pyran; (o) 3(4methoxyphenyl)-3-phenyl-6,10, 11-trimethoxy-13-butyl-13-hydroxy-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b] pyran; (p) 3-(4-morpholinophenyl)-3-phenyl-6,11-dimethoxy-13-methoxy-13-methyl-13H-3H-indeno(2,'3,'3,4]naphtho[1,2-b]pyran; (q) 3,3-di(4-dimethoxyphenyl)6,7,10,11-tetramethoxy-13, 13-dimethyl-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (r) 3,3-diphenyl-13,13-dimethyl-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; or (s) 3-(4-methoxyphenyl)-3-phenyl-G, 11-dimethoxy-13-ethyl-13-hydroxy-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b] pyran; (2) a photochromic material represented by graphic formula II chosen from: (a) 3,3diphenyl-9-methyl-11-methoxy-311-9H-indeno[3',2':3,4]naphtho[1,2-b] pyran; (b) 3,3-diphenyl-9,9-dimethyl-11,6-dimethoxy-3H-9H-indeno[3',2':3,4]naphtho[1, 2-b]pyran; (c) 3-(4-methoxyphenyl)-3-phenyl-9,9-dimethyl-11,6-dimethoxy-3H-9H-indeno[3', 2':3,4]naphtho[1,2-b]pyran; (d) 3-(3-trifluoromethylphenyl)-3-phenyl-9-methyl-9-phenyl-11-dimethoxy-3H-9H-indeno[3',2':3,4]naphtho[1,2-b]pyran; or (e) 3,3-diphenyl-9-phenyl-3H-9H-indeno[3',2':3,4]naphtho [1,2-b]pyran; (3) a photochromic material represented by graphic formula III chosen from: (a) 2,2-diphenyl-6,7-dimethoxy-2H-13H-indeno[1',2':4,3]naphtho[2,1-b]pyran; (b) 2,2-diphenyl-6,7-dimethoxy-13-methyl-2H-3H-indeno [1', 2':4,3]naphtho[2,1-b]pyran; (c) 2,2-diphenyl-6-methoxy-13,13-dimethyl-2H-13H-indeno [1',2':4,3]naphtho[2,1-b]pyran (d) 2-(3-trifluromethylphenyl)-2-phenyl-6-methoxy-13,13-dimethyl-2H-13H-indeno [1',2':4,3]naphtho[2,1-b]pyran; (e) 2-(3-methoxyphenyl)-2-phenyl-6,7,11-trimethoxy-13-methyl-13-hydroxy-2H-13H-indeno[1',2':4,3]naphtho[2,1-b]pyran; (f) 2-(3-methoxyphenyl)-2-phenyl-6,7-dimethoxy-13,13-dimethyl-2H-13H-indeno [1',2':4,3]naphtho[2,1-b]pyran; or (g) 2-(3-methoxyphenyl)-2-phenyl-6,7-dimethoxy-13-methyl-13-hydroxy-2H-13H-indeno[1',2':4,3]naphtho[2,1-b]pyran; (4) a photochromic material represented by graphic formula IV chosen from: (a) 2,2-diphenyl-5-(2-hydroxy)propyl)-8-methoxy-2H-naphtho[1,2-b]pyran; (b) 2,2-phenyl-5-(2-(hydroxy)propyl)-6-phenyl-8,9-dimethoxy-2H-naphtho[1,2-b] pyran; (c) 2,2-phenyl-5-carbomethoxy-6-phenyl-8,9-dimethoxy-2H-naphtho[1,2-b]pyran; (d) 2-(3-trifluoromethylphenyl)-2-phenyl-5-carbomethoxy-6-methyl-9-methoxy-2H-naphtho[1,2-b]pyran; (h) 2,2-di(3-trifluoromethylphenyl)-5-carbomethoxy-6-methyl-9-methoxy-2H-naphtho[1,2-b]pyran; (i) 2,2-diphenyl-5-carbomethoxy-6-(4-methoxyphenyl)-9-methoxy-2H-naphtho[1,2-b]pyran; (j) 2,2-di(4-fluorophenyl)-5-carbomethoxy-6-methyl-9-methoxy-2H-naphtho[1,2-b]pyran; (k) 2,2-di(3-trifluoromethylphenyl)-5-(2-(hydroxy)propyl)-6-methyl-9-methoxy-2H-naphtho[1,2-b]pyran; (l) 2,2-diphenyl-5-carbomethoxy-6-phenyl-9-methoxy-2H-naphtho[1,2-b]pyran; or (m) 2,2-diphenyl-5-(2-(2-hydroxyethoxy)ethoxy) carbonyl-6-(4-methoxyphenyl)-9-methoxy-2H-naphtho[1,2-b]pyran; (5) a photochromic material represented by graphic formula V chosen from: (a) 2,2-phenyl-5-methyl-2H-naphtho[1,2-b]pyran; (b) 2,2-phenyl-5-phenyl-2H-naphtho[1,2-b]pyran; (c) 2,2-phenyl-6-carbomethoxy-5-(4-morpholinophenyl)-2H-naphtho[1,2-b]pyran; (d) 2,2-phenyl-6-carbomethoxy-5-hydroxy-2H-naphtho[1,2-b]pyran; (e) 2,2-phenyl-6-carbomethoxy-5-methoxy-2H-naphtho[1,2-]pyran; (f) 2,2-phenyl-6-carbomethoxy-5-8-dimethoxy-2H-naphtho[1,2-b]pyran; (g) 2-phenyl-2-(3-trifluorophenyl)-6-phenyl-5-hydroxy-2H-naphtho[1,2-b]pyran; (h) 2-phenyl-2-(4-methoxyphenyl)-6-(2-(hydroxy)propyl)-5-morpholino-2H-naphtho [1,2b]pyran; (j) morpholinophenyl)-2H-naphtho[1,2-b]pyran; (6) a photochromic material represented by graphic formula VI chosen from: (a) 3-phenyl-3-(2-fluorophenyl)-3H-naphtho[2,1-b]pyran; (b) 3-phenyl-3-(2-fluorophenyl)-6-acetoxy-3H-naphtho[2,1-b]pyran; (c) 3,3-diphenyl-6-morpholino-3H-naphtho[2,1-b]pyran; (d) 3-phenyl-3-(2-fluorophenyl)-5-hydroxymethyl-3H-naphtho[2,1-b]pyran; (e) 3-phenyl-3-(3-trifluoromethylphenyl)-3H-naphtho[2,1-b]pyran; or (f) 3-(4-methylphenyl)-3-(2-fluorophenyl)-3H-naphtho[2,1-b]pyran; (7) a photochromic material represented by graphic formula VII chosen from: (a) 3,3-diphenyl-12-methoxycarbonyl-11-methyl-6-methoxy-3H-phenanthro[1,2-b] pyran; (8) a photochromic material represented by graphic formula VIII chosen from: (a) 2,2,7,7-tetraphenyl-4-oxo-2,3,4,7-tetrahydro-1H-pyrimidino[5'4':3,4] naphtho[1,2-b]pyran; (b) 7,7-diphenyl-2-pentyl-4-oxo-4H-7H-[1,3]dioxino[5',4':3,4]naphtho[1,2-b] pyran; (c) (2-fluorophenyl)-3-(3-methyl-4-methoxyphenyl)-2-pentyl-4-oxo-4H-7H-[1,3] dioxino[5',4':3,4]-naphtho[1,2-b]pyran; or (d) 7-(4-morpholino-2-fluorophenyl)-7-(3,4-dimethoxyphenyl)-2-pentyl-4-oxo-4H-7H-[1,3]dioxino[5',4':3,4]naphtho[1,2-b]pyran; or (9) mixtures thereof. 6. The photochromic article of claim 5 wherein photochromic material (b) is chosen from: (a) 3-(4-methoxyphenyl)-3-phenyl-6,7,10,11-tetramethaxy-13-ethyl-13-hydroxy-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (b) 3,3-di(4-methoxyphenyl)-6,11-dimethoxy-13-butyl-13-ethoxy-13H-3H-indeno[2, '3,'3,4]naphtho[1,2-b]pyran; (c) 3-(4-methoxyphenyl)-3-phenyl-6,11-dimethoxy-13-methyl-13-(2-(2-hydroxyethoxy)ethoxy)-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (d) 3,3-di(4-methoxyphenyl)-11-morpholino-13,13-dimethyl-13H-3H-indeno[2,'3, '3,4]naphtho[1,2-b]pyran; (e) 3-(4-morpholinophenyl)-3-phenyl-11-morpholino-13,13-dimethyl-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (f) 3-(4-methoxyphenyl)-3-phenyl-10,11-dimethoxy-13,13dimethyl-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (g) 3-(4-methoxyphenyl)-3-phenyl-13,13-dimethyl-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (h) 3,3-di(4-methoxyethoxyphenyl)-11-morpholino-13,13-dimethyl-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (i) 3,3-diphenyl-6,11-dimethoxy-13-acetoxy-13H-3H-indeno[2,'3,'3,4]naphtho[1, 2-b]pyran; (j) 3-(4-methoxyphenyl)-3-phenyl-6,10, 11-trimethoxy-13-methyl-13-hydroxy-13H-3H-indeno[2,'3,'3,4]naphtho([1,2-b] pyran; (k) 3-(4-methoxyphenyl)-3-phenyl1-6,10, 11-trimethoxy-13-butyl-13-hydroxy-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b] pyran; (l) 2,2-diphenyl-5-(2-hydroxy)propyl)-8-methoxy-2H-naphtho[1,2-b]pyran; (m) 2,2-diphenyl-5-carbomethoxy-6-phenyl-9-methoxy-2H-naphtho[1,2-b]pyran; (n) 3-(3,4-dimethoxyphenyl)-3-(4-methoxyphenyl)-11-morpholino-13, 13-dimethyl-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (o) 7-(4-morpholino-2-fluorophenyl)-7-(3,4-dimethoxy phenyl)-2-pentyl-4-oxo-4H-7H-[1,3]dioxino[5',4':3,4]naphtho[1,2b]pyran; (p) 3-(4-methoxyphenyl)-3-(4-morpholinophenyl)-11-morpholino-13, 13-dimethyl-13H-3H-indeno(2,'3',3,4) naphtho[1,2-b]pyran; (q) 3,3-diphenyl-13,13-dimethyl-13H-3H-indeno[2,'3,'3,41naphtho[1,2-b]pyran; (r) 3-(4-morpholinophenyl)-3-phenyl-6,11-dimethoxy-13-methoxy-13-methyl-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (s) 2,2,7,7-tetraphenyl-4-oxo-2,3,4,7-tetrahydro-1H-pyrimidino[5',4':3,4]naphtho[1,2-b]pyran; (t) 3,3di(4-dimethoxyphenyl)-6,7,10,11-tetramethoxy-13, 13-dimethyl-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b]pyran; (u) 3-(4-methoxyphenyl)-3-phenyl-6, 11-dimethoxy-13-ethyl-13-hydroxy-13H-3H-indeno[2,'3,'3,4]naphtho[1,2-b] pyran; (v) 2,2diphenyl-5-(2-(2-hydroxyethoxy)ethoxy) carbonyl-6-(4-methoxyphenyl)-9-methoxy-2H-naphtho (1,2-b]pyran; (w) 3-phenyl-3-(2-fluorophenyl)-3H-naphtho[2,1-b]pyran; or (x) mixtures thereof. 7. The photochromic article of claim 1 further comprising at least one fixed tint dye. 8. The photochromic article of claim 1 wherein said photochromic article is adapted to exhibit a neutral activated color. 9. The photochromic article of claim 1 wherein photochromic material (c) is an organic photochromic material and is chosen from naphthopyrans, benzopyrans, phenanthropyrans, indenonaphthopyrans, oxazines, metal-dithiozonates, fulgides, fulgimides, spiro(indoline)pyrans or mixtures thereof. 10. The photochromic article of claim 1 further comprising an at least partial coating of an at least partially abrasion resistant coating applied to at least one surface of the substrate. 11. The photochromic article of claim 10 further comprising an at least partial coating of an at least partially antireflective coating applied to said abrasion resistant coating. 12. The photochromic article of claim 1 further comprising an at least partial coating of an at least partially cured polymeric coating applied to at least one surface of the substrate wherein said polymeric coating comprises photochromic material (b) and the substrate comprises photochromic material (c). 13. The photochromic article of claim 12 wherein the at least partially cured polymeric coating is a polymeric coating of thermoplastic or thermosetting materials. 14. The photochromic article of claim 13 wherein the at least partially cured polymeric coating is a polymeric coating of thermosetting materials chosen from polyurethanes, aminoplast, poly(meth)acrylates, polyanhydrides, polyacrylamides, epoxy resins or polysilanes. 15. The photochromic article of claim 12 further comprising an at least partial coating of primer interposed between the at least partially cured polymeric coating and the substrate. 16. The photochromic article of claim 15 further comprising an at least partial coating of an at least partially abrasion resistant coating applied to the surface of the at least partially cured polymeric coating. 17. The photochromic article of claim 16 further comprising an at least partial coating of an at least partially antireflective coating applied to the at least partial coating of an at least partially abrasion resistant coating applied to the surface of the at least partially cured polymeric coating. 18. The photochromic article of claim 1 wherein the substrate is chosen from paper, glass, ceramic, wood, masonry, textile, metal or organic polymeric material. 19. The photochromic article of claim 18 wherein the substrate is organic polymeric material and said organic polymeric material is chosen from poly(C1-C12 alkyl methacrylates), poly(oxyalkylene dimethacrylates), poly(alkoxylated phenol methacrylates), cellulose acetate, cellulose triacetate, cellulose acetate propionate, cellulose acetate butyrate, poly(vinyl acetate), poly(vinyl alcohol), poly(vinyl chloride), poly(vinylidene chloride), thermoplastic polycarbonates, polyesters, polyurethanes, poly(ethylene terephthalate), polystyrene, poly(alpha methylstyrene), copoly(styrene-methylmethacrylate), copoly(styrene-acrylonitrile), polyvinylbutyral or is polymerized from monomers chosen from bis(allyl carbonate) monomers, polyfunctional acrylate monomers, polyfunctional methacrylate monomers, diethylene glycol dimethacrylate monomers, diisopropenyl benzene monomers, ethoxylated bisphenol A dimethacrylate monomers, ethylene glycol bismethacrylate monomers, poly (ethylene glycol) bismethacrylate monomers, ethoxylated phenol bis methacrylate monomers, alkoxylated polyhydric alcohol polyacrylate monomers, styrene monomers, urethane acrylate monomers, glycidyl acrylate monomers, glycidyl methacrylate monomers, diallylidene pentaerythritol monomers or mixtures thereof. 20. The photochromic article of claim 19 wherein said organic polymeric material is an optical element. 21. The photochromic article of claim 20 wherein said optical element is an ophthalmic lens. 22. The photochromic article of claim 1 further comprising a superstrate connected to at least a portion of the substrate, said superstrate comprising at least one organic polymeric material. 23. The photochromic article of claim 22 wherein the superstrate comprises photochromic material (b) and the substrate comprises photochromic material (c). 24. The photochromic article of claim 23 wherein the superstrate is connected by being adherently bonded to at least a portion of the substrate. 25. The photochromic article of claim 23 wherein the superstrate is an organic polymeric material chosen from thermosetting or thermoplastic materials. 26. The photochromic article of claim 25 wherein the superstrate is a thermoplastic material and is polyurethane. 27. The photochromic article of claim 23 further comprising an at least partially abrasion resistant film superposed on at least a portion of the superstrate. 28. The photochromic article of claim 27 wherein the at least partially abrasion resistant film is an organic polymeric material chosen from thermoplastic and thermosetting materials. 29. The photochromic article of claim 28 wherein the at least partially abrasion resistant film is a thermoplastic material and is polycarbonate. 30. The photochromic article of claim 27 further comprising an at least partial coating of an at least partially antireflective coating applied to said abrasion resistant film superposed on said superstrate. 31. The photochromic article of claim 1 wherein photochromic material (b) is chosen from: (a) a single photochromic compound, (b) a mixture of photochromic compounds; (c) a material comprising at least one photochromic compound; (d) a material to which at least one photochromic compound is chemically bonded; (e) material (c) or (d) further comprising a coating to substantially prevent contact of the at least one photochromic compound with external materials; (f) a photochromic polymer; or (g) mixtures thereof. 32. The photochromic article of claim 9 wherein photochromic material (c) is chosen from: (a) a single photochromic compound; (b) a mixture of photochromic compounds; (c) a material comprising at least one photochromic compound; (d) a material to which at least one photochromic compound is chemically bonded; (e) material (c) or (d) further comprising a coating to substantially prevent contact of the at least one photochromic compound with external materials; (f) a photochromic polymer; or (g) mixtures thereof. 33. A photochromic article demonstrating consistent photochromic response over a broad temperature range comprising: a) a substrate; b) a temperature dependent reducing amount of at least one organic photochromic material associated with said substrate, said photochromic material having a temperature dependent variable absorbance that changes from more absorbing to less absorbing of radiation in its activating spectral absorbance as the temperature increases from 10�� C. to 35�� C.; and c) at least one other photochromic material (c) associated with said substrate that is different from photochromic material (b); said photochromic material (b) being used in a coating or film on the surface of the substrate and interposed between photochromic material (c) and a source of activating radiation wherein the substituent groups of photochromic material (b) are chosen such that said photochromic article exhibits an unactivated state luminous transmittance of greater than 70 percent at 23�� C. and a difference of 20 percent or less between the activated state luminous transmittance at saturation measured at 10�� C. and the activated state luminous transmittance at saturation measured at 35�� C., said photochromic article being activated by simulated sunlight from a xenon arc lamp set at 6.7 Watts/meter2 UVA and 50,000 lumens/meter2, said photochromic material (b) being chosen from: (1) a naphthopyran compound represented by the following graphic formula I: wherein, (a) R1 and R2 are each independently chosen from: (i) hydrogen, hydroxy, C1-C6 alkyl, C1-C8 haloalkyl, C3-C7 cycloalkyl, or the group,--C(O)W, wherein W is hydroxy, C1-C6 alkyl, C1-C6 alkoxy, di(C1-C6)alkylamino, morpholino or piperidino; (ii) the group,--OR8 wherein R8 C1-C6 alkyl, C1-C8 haloalkyl, phenyl(C1-C3)alkyl or the group--CH(R9)Q, wherein R9 is hydrogen or C1-C3 alkyl and Q is--COOR10, and R10 is hydrogen or C1-C3 alkyl; (iii) the group--CH(R12)G, wherein R12 is hydrogen or C1-C6 alkyl, and G is--COOR11, wherein R11 is hydrogen or C1-C6 alkyl; or (iv) the group T represented by the formula: description="In-line Formulae" end="lead"-Z[(OC2H4)x(OC3H6 )y(OC4H8)z]Z' ordescription="In-line Formulae" end="tail" description="In-line Formulae" end="lead"--[(OC2H4)x(OC3H6 )y(OC4H8)z]Z'description="In-line Formulae" end="tail" wherein-Z is--C(O)--or--CH2--, Z' is C1-C3 alkoxy or a polymerizable group, x, y and z are each a number between 0 and 50, and the sum of x, y and z is between 2 and 50; or (v) R1 and R2 together form R3 chosen from a substituted or unsubstituted spiro-carbocyclic ring containing 5 to 6 carbon atoms, said spiro-carbocyclic ring being annellated with 0, 1 or 2 benzene rings, said substituents being hydrogen or C1-C6 alkyl; (b) R4 and R7 are each independently chosen from hydrogen, provided that both are not hydrogen, the group T,--OR7' wherein R7' is chosen from C1-C6 alkyl, phenyl(C1-C6)alkyl or C1-C6 alkoxy(C1-C6)alkyl or R4 and R7 are each independently a nitrogen-containing group chosen from: (i)--N(R15)R16 wherein R15 and R16 are each independently chosen from hydrogen, C1-C8 alkyl or R15 and R16 come together with the nitrogen atom to form a C3-C20 hetero-bicycloalkyl ring or a C4-C20 hetero-tricycloalkyl ring; (ii) a nitrogen containing ring represented by the following graphic formula: wherein each Y is--CH2--, and X is chosen from--Y--,--O--,--S--,--S(O)--,--S(O2)--,--NH--,--N(R17)--or--N(aryl)-, wherein R17 is C1-C6 alkyl, said aryl is phenyl or naphthyl, m is the integer 1, 2 or 3, and p is the integer 0, 1, 2, or 3 and when p is O, X is Y; or (iii) a group represented by one of the following graphic formulae: wherein R19, R20 and R21 are each independently chosen for each occurrence in each formula from hydrogen or C1-C6 alkyl, or the groups R19 and R20 together form a ring of 5 to 8 carbon atoms and each R18 is C1-C6 alkyl and p being the integer 0, 1, 2 or 3; (c) R5 and R6 are each independently chosen from hydrogen, C1-C6 alkyl, C1-C6 haloalkyl, the group T,--OR7', described hereinbefore in (b) or nitrogen-containing group (b) (i), (ii) or (iii); and (d) B and B' are each independently chosen from: (i) mono-T-substituted phenyl; (ii) the unsubstituted, mono-, di-, or tri-substituted aryl groups, phenyl or naphthyl, each of said aryl substituents being chosen from hydroxy, aryl, C1-C8 alkoxy (C1-C8)alkoxy, aryl(C1-C6)alkyl, aryloxy, C1-C6 alkyl, C1-C6 haloalkyl, C1-C6 alkoxy, acryloxy, methacryloxy, halogen,--CF3,--CN or--COOR11; wherein R11 is the same as described hereinbefore; or (iii) mono-substituted phenyl, said substituent located at the para position being--(CH2)t--or--O--(CH2)t--, wherein t is the integer 1, 2, 3, 4, 5 or 6, said substituent being connected to an aryl group on another photochromic material; (2) a naphthopyran compound represented by the following graphic formula II: wherein R1, R2, R4, B and B' are the same groups described hereinbefore in (1) (a), (b) and (d); R3' is--OR8', wherein R8' is C1-C6 alkyl or phenyl(C1-C3 )alkyl, or R3' is chosen from hydrogen, C1-C6 alkyl or C1-C6 haloalkyl; (3) a naphthopyran compound represented by graphic formula III: wherein; R1, R2, R4, B and B' are the same groups described hereinbefore in (1) (a), (b) and (d); each R22 is independently chosen from hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, C1-C6 haloalkyl or--OR8', which was described hereinbefore in (2), and n is the integer 0, 1, 2, or 3; (4) a naphthopyran compound represented by the following graphic formula IV: wherein, (a) R23 is--C(O)L, or--C(R27) (R28)OR11, wherein L is--OR11,--N(R15)R16 or an unsubstituted, mono-substituted or di-substituted heterocyclic ring chosen from 1-indolinyl, morpholino, piperidino, 1-pyrrolidyl or 1-piperazinyl, said heterocyclic ring substituents being C1-C6 alkyl; R11, R15, and R16 are the same as described hereinbefore in (1) (a) (iii) and (b) (i); R27 and R28 are each independently chosen from C1-C6 alkyl, C3-C7 cycloalkyl, C1-C6 haloalkyl or phenyl; (b) R24 is hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, mono-or di-(C1-C6)alkylaryl, mono-or di-(C1-C6)alkoxyaryl, C1-C6 haloalkyl, phenyl or naphthyl; (c) R25 and R26 are each independently chosen from hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, C1-C6 haloalkyl, the group T, described hereinbefore in (1) (a) (iv)--OR8', described hereinbefore in (2) or said nitrogen-containing group (1) (b) (i), (ii), or (iii) described hereinbefore or R25 and R26 together form one of the following graphic formulae: wherein J and K are each independently chosen for each occurrence in each formula from oxygen or the group--N(R15)--, R15, R19 and R20, are the same groups described hereinbefore in (1) (b) (i) and (iii); and (d) B and B' are the same groups described hereinbefore in (1) (d); (5) a naphthopyran represented by the following graphic formula V: wherein; (a) R22 and n are the same as described hereinbefore in (3); R29 is hydroxy, C1-C6 alkyl, C3-C7 cycloalkyl, C1-C6 haloalkyl, aryl, mono(C1-C6)alkoxyaryl, di(C1-C6)alkoxyaryl, mono(C1-C6 )alkylaryl, di(C1-C6 )alkylaryl, haloaryl, di(C1-C6)alkylaminoaryl, the group T described hereinbefore in (1) (a) (iv),--OR8' described hereinbefore in (2), or said nitrogen-containing group (1) (b) (i), (ii) or (iii) described hereinbefore; (b) R30 is hydrogen or R23 described hereinbefore in (4) (a); and (c) B and B' are the same groups described hereinbefore in (1) (d); (6) a naphthopyran compound represented by the following graphic formula VI: wherein; (a) R31 is hydrogen or R29 described hereinbefore in (5) (a) (b) R32 is C1-C6 alkyl, C1-C6 alkoxy or C1-C6 haloalkyl, n is the same as described hereinbefore in (3); and (c) B and B' are the same groups described hereinbefore in (1) (d); and (7) a naphthopyran represented by the following graphic formula VII: wherein: each R22 and n are the same as described hereinbefore in (3); R23 and R24 are the same as described hereinbefore in (4) (a) and (b); B and B' are the same as described hereinbefore in (1) (d); (8) a naphthopyran represented by the following graphic formula VIII: wherein, (a) R33 and R34 together form an oxo group or R33 is hydrogen and R34 is hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, allyl, phenyl, mono-or di-substituted phenyl, benzyl, mono-substituted benzyl, linear or branched C3-C12 alkenyl, C1-C6 alkoxy carbonyl(C1-C6 )alkyl, methacryloxy(C1-C6 )alkyl, acryloxy(C1-C6)alkyl, C1-C4 acyloxy(C1-C6)alkyl, each of said phenyl or benzyl substituents being C1-C6 alkyl, C1-C6 alkoxy, morpholino, di(C1-C6)alkylamino, chloro or fluoro; (b) each R35 is independently chosen for each occurrence from C1-C6 alkyl, C1-C6 alkoxy, chloro, fluoro, phenyl, C3-C7 cycloalkyl, di(C1-C6) alkylamino, morpholino, thiomorpholino, piperidino, pyridyl, N--(C1-C6)alkyl piperizino or N-phenyl piperizino, and s is the integer 0, 1 or 2; (c) D is oxygen or--N(R36)--, wherein R36 is hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, C1-C5 acyl or phenyl; (d) E is oxygen,--N(R36)--or--C(R37) (R38)--, wherein R37 and R38 are each independently chosen from hydrogen, C1-C6 alkyl or C3-C7 cycloalkyl, with the proviso that when E is--C(R37) (R38)--, D is oxygen; and (e) M and M' are each chosen from the unsubstituted, mono, di or tri-substituted aryl group, phenyl or naphthyl; each of said aryl substituents being chosen from hydroxy, phenyl, naphthylaryl(C1-C6)alkyl, aryloxy, C1-C6 alkyl, C1-C6 chloroalkyl, C1-C6 fluoroalkyl, C1-C6 alkoxy, acryloxy, methacryloxy, bromo, chloro or fluoro; or (9) mixtures thereof. 34. The photochromic article of claim 33 wherein the photochromic article is adapted to exhibit an unactivated state luminous transmittance of greater than 80 percent at 23�� C., and a difference of 10 percent or less between the activated state luminous transmittance at saturation measured at 10�� C. and the activated state luminous transmittance at saturation measured at 35�� C. 35. The photochromic article of claim 33 further comprising at least one fixed tint dye. 36. The photochromic article of claim 33 wherein said photochromic article is adapted to exhibit a neutral activated color. 37. The photochromic article of claim 33 further comprising an at least partial coating of an at least partially abrasion resistant coating. 38. The photochromic article of claim 37 further comprising an at least partial coating of an at least partially antireflective coating. 39. The photochromic article of claim 33 further comprising an at least partial coating of an at least partially cured polymeric coating applied to at least one surface of the substrate wherein said polymeric coating comprises photochromic material (b) and the substrate comprises photochromic material (c). 40. The photochromic article of claim 39 wherein the at least partially cured polymeric coating is a polymeric coating of thermoplastic or thermosetting materials. 41. The photochromic article of claim 40 wherein the at least partially cured polymeric coating is a polymeric coating of thermosetting materials chosen from polyurethanes, aminoplast resins, poly(meth)acrylates, polyanhydrides, polyacrylamides, epoxy resins or polysilanes. 42. The photochromic article of claim 39 further comprising an at least partial coating of primer interposed between the at least partially cured polymeric coating and the substrate. 43. The photochromic article of claim 42 further comprising an at least partial coating of an at least partially abrasion resistant coating applied to the surface of the at least partially cured polymeric coating. 44. The photochromic article of claim 43 further comprising an at least partial coating of an at least partially antireflective coating. 45. The photochromic article of claim 33 wherein the substrate is paper, glass, ceramic, wood, masonry, textile, metal or organic polymeric material. 46. The photochromic article of claim 45 wherein the substrate is organic polymeric material and said organic polymeric material is chosen from poly(C1-C12 alkyl methacrylates), poly(oxyalkylene dimethacrylates), poly(alkoxylated phenol methacrylates), cellulose acetate, cellulose triacetate, cellulose acetate propionate, cellulose acetate butyrate, poly(vinyl acetate), poly(vinyl alcohol), poly(vinyl chloride), poly(vinylidene chloride), thermoplastic polycarbonates, polyesters, polyurethanes, poly(ethylene terephthalate), polystyrene, poly(alpha methylstyrene), copoly(styrene-methylmethacrylate), copoly(styrene-acrylonitrile), polyvinylbutyral or is polymerized from monomers chosen from bis(allyl carbonate) monomers, polyfunctional acrylate monomers, polyfunctional methacrylate monomers, diethylene glycol dimethacrylate monomers, diisopropenyl benzene monomers, ethoxylated bisphenol A dimethacrylate monomers, ethylene glycol bismethacrylate monomers, poly(ethylene glycol) bismethacrylate monomers, ethoxylated phenol bis methacrylate monomers, alkoxylated polyhydric alcohol polyacrylate monomers, styrene monomers, urethane acrylate monomers, glycidyl acrylate monomers, glycidyl methacrylate monomers, diallylidene pentaerythritol monomers or mixtures thereof. 47. The photochromic article of claim 46 wherein said organic polymeric material is an optical element. 48. The photochromic article of claim 47 wherein said optical element is an ophthalmic lens. 49. The photochromic article of claim 47 wherein said optical element is an ocular device. 50. The photochromic article of claim 33 further comprising a superstrate connected to at least a portion of the substrate, said superstrate comprising at least one organic polymeric material wherein the superstrate comprises photochromic material (b) and the substrate comprises photochromic material (c). 51. The photochromic article of claim 50 wherein the superstrate is an organic polymeric material chosen from thermosetting or thermoplastic materials. 52. The photochromic article of claim 51 wherein the superstrate is a thermoplastic material and is polyurethane. 53. The photochromic article of claim 50 further comprising an at least partially abrasion resistant film superposed on at least a portion of the superstrate. 54. The photochromic article of claim 53 wherein the at least partially abrasion resistant film is an organic polymeric material chosen from thermoplastic and thermosetting materials. 55. The photochromic article of claim 54 wherein the at least partially abrasion resistant film is a thermoplastic material and is polycarbonate. 56. The photochromic article of claim 54 further comprising an at least partial coating of an at least partially antireflective coating.