초록 ▼

An optical assembly for architectural illumination which includes a quasi point source surrounded by a collimating ring lens designed to radially project collimated beams. A segmented, off axis, parabolic reflector to collect and reflect light (not gathered by the collimating ring lens) as collimate

An optical assembly for architectural illumination which includes a quasi point source surrounded by a collimating ring lens designed to radially project collimated beams. A segmented, off axis, parabolic reflector to collect and reflect light (not gathered by the collimating ring lens) as collimated beams and a ring reflector, the segments of which designed to gather beams from both the collimating ring lens and the off axis reflector and the direct them in substantially the same direction.

대표청구항 ▼

1. An optical system designed to collect and project a majority of the radiant flux from a quasi point source lamp as a substantially radial beam, comprising:a. a collimating ring lens at least partially surrounding a quasi point light source and segmented so as to project collimated radial beams;b.

1. An optical system designed to collect and project a majority of the radiant flux from a quasi point source lamp as a substantially radial beam, comprising:a. a collimating ring lens at least partially surrounding a quasi point light source and segmented so as to project collimated radial beams;b. an off axis parabolic reflector of radially collimating segments;c. a reflecting ring of individual reflecting elements, some of which relieve and reflect beams projected from the collimating ring lens, some of which relieve and reflect light from sections of the off axis parabolic reflector. 2. An optical system as defined in claim 1 wherein the collimating ring lens has a fresnel section. 3. An optical system as defined in claim 1 wherein the collimating ring lens is aspheric in section. 4. An optical system as defined in claim 1 wherein the collimating ring lens is spherical in section. 5. An optical system as defined in claim 1 wherein the collimating ring lens is comprised of individual collimating lenses. 6. An optical system as defined in claim 1 wherein the inner surface (entry surface) of the collimating ring lens is comprised of vertically disposed positive cylindrical surface. 7. An optical system as defined in claim 1 wherein the cylindrical lens segments are disposed on a portion of the internal face of the collimating ring lens. 8. An optical system as defined in claim 1 wherein the cylindrical segments of the collimating ring lens and the radially collimating segments of the reflector are radially offset from each other so that their respectively refracted and reflective beams are offset from each other. 9. An optical system as defined in claim 1 wherein the individual reflecting segments, those reflecting beams from the collimating ring lens axis those receiving beams from the off axis parabolic reflectors are alternately disposed about the reflecting ring. 10. An optical system as defined in claim 1 wherein the individual segments of the reflector ring have substantially flat surfaces. 11. An optical system as defined in claim 1 wherein the individual segments of the reflector ring are cylindrically concave. 12. An optical system as defined in claim 1 wherein the individual segments of the reflector ring are cylindrically convex. 13. An optical system as defined in claim 1 wherein the individual segments of the reflector ring have both cylindrically convex and concave surfaces. 14. An optical system as defined in claim 1 wherein the optical system is only comprised of a radial portion of the collimating ring lens, a radial portion of the off axis reflector and a radial portion of the reflector ring.a reflector ring segment disposed radially opposite the collimating ring segment for redirecting light back through the collimating ring segment. 15. An optical system as defined in claim 1 wherein the collimating ring lens is conical to project beams in a radially conical direction.