Illuminator for directly providing dark field and bright field illumination
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G06K-007/10
G06K-007/14
F21V-003/02
F21V-005/00
F21Y-115/10
출원번호
US-0645070
(2017-07-10)
등록번호
US-10216969
(2019-02-26)
발명자
/ 주소
Feng, Chen
Ren, Jie
Ouyang, Yunxin
Gillet, Alain
출원인 / 주소
HAND HELD PRODUCTS, INC.
대리인 / 주소
Additon, Higgins & Pendleton, P.A.
인용정보
피인용 횟수 :
0인용 특허 :
237
초록▼
Imaging devices and illuminating devices are provided. In one exemplary implementation, an imaging device comprises an optical sensor and an illuminator. The illuminator comprises a support frame and a plurality of light emitting diodes (LEDs) connected to the support frame. A first set of LEDs of t
Imaging devices and illuminating devices are provided. In one exemplary implementation, an imaging device comprises an optical sensor and an illuminator. The illuminator comprises a support frame and a plurality of light emitting diodes (LEDs) connected to the support frame. A first set of LEDs of the plurality of LEDs is configured to provide dark field illumination at a high angle of incidence with respect to an object. The first set of LEDs is configured to provide illumination without the use of a light pipe, diffuser, or reflector. A second set of LEDs of the plurality of LEDs is configured to provide bright field illumination at a low angle of incidence with respect to the object. The second set of LEDs is configured to provide illumination without the use of a light pipe, diffuser, or reflector.
대표청구항▼
1. An illuminator comprising: a support frame;an optical diffuser connected to the support frame;a first plurality of light emitting diodes (LEDs) connected to the support frame, the first plurality of LEDs configured to provide dark field illumination at a high angle of incidence with respect to an
1. An illuminator comprising: a support frame;an optical diffuser connected to the support frame;a first plurality of light emitting diodes (LEDs) connected to the support frame, the first plurality of LEDs configured to provide dark field illumination at a high angle of incidence with respect to an object, the first plurality of LEDs further configured to provide illumination to the object without the use of a light pipe, diffuser, or reflector;a second plurality of LEDs connected to the support frame, the second plurality of LEDs configured to provide bright field illumination at a low angle of incidence with respect to the object, the second plurality of LEDs further configured to provide illumination to the object without the use of a light pipe, diffuser, or reflector; anda third plurality of LEDs connected to the support frame, the third plurality of LEDs configured to provide bright field illumination through the optical diffuser without the use of a light pipe or reflector. 2. The illuminator of claim 1, wherein the support frame comprises a rigid plate configured to support the second and third pluralities of LEDs. 3. The illuminator of claim 2, wherein the support frame further comprises a plurality of panels configured to support the first plurality of LEDs. 4. The illuminator of claim 3, wherein the support frame further comprises a plurality of legs extending from edges of the rigid plate at an angle substantially perpendicular to a planar surface of the rigid plate, and wherein the panels are connected to ends of the legs. 5. The illuminator of claim 4, further comprising a rigid belt configured to be connected to the plurality of panels, wherein the rigid belt comprises transparent elements configured to distribute light from the first plurality of LEDs. 6. The illuminator of claim 1, wherein the optical diffuser comprises an ellipsoid-shaped diffusing element. 7. The illuminator of claim 6, wherein the third plurality of LEDs is configured to illuminate an outside surface of the ellipsoid-shaped diffusing element to provide the bright field illumination to the object. 8. The illuminator of claim 6, wherein the optical diffuser comprises a plurality of openings in the ellipsoid-shaped diffusing element, and wherein the second plurality of LEDs is configured to illuminate the object through the openings. 9. The illuminator of claim 1, further comprising a plurality of caps at least partially surrounding lenses of the first, second, and third pluralities of LEDs. 10. The illuminator of claim 9, wherein caps at least partially surrounding lenses of the first plurality of LEDs include a cylindrical shape, caps at least partially surrounding lenses of the second plurality of LEDs include an aspherical shape, and caps at least partially surrounding lenses of the third plurality of LEDs include a wing shape. 11. The illuminator of claim 1, wherein each LED of the first, second, and third pluralities of LEDs is a single-color, dual-color, or tri-color LED. 12. An imaging device comprising: an optical sensor; andan illuminator comprising a support frame and a plurality of light emitting diodes (LEDs) connected to the support frame;wherein a first set of LEDs of the plurality of LEDs is configured to provide dark field illumination at a high angle of incidence with respect to an object, the first set of LEDs further configured to provide illumination without the use of a light pipe, diffuser, or reflector; andwherein a second set of LEDs of the plurality of LEDs is configured to provide bright field illumination at a low angle of incidence with respect to the object, the second set of LEDs further configured to provide illumination without the use of a light pipe, diffuser, or reflector. 13. The imaging device of claim 12, wherein the illuminator further comprises an ellipsoidal-shaped diffuser connected to the support frame. 14. The imaging device of claim 13, wherein the ellipsoidal-shaped diffuser comprises an aperture through which the optical sensor is configured to optically sense the object. 15. The imaging device of claim 13, wherein the ellipsoidal-shaped diffuser comprises a plurality of openings through which the second set of LEDs directly illuminates the object. 16. The imaging device of claim 13, wherein a third set of LEDs of the plurality of LEDs is configured to illuminate an outside surface of the ellipsoidal-shaped diffuser to provide bright field illumination to the object without the use of a light pipe or reflector. 17. The imaging device of claim 16, wherein the illuminator further comprises a plurality of caps positioned adjacent to the first, second, and third sets of LEDs, wherein caps positioned adjacent to the first set of LEDs include a cylindrical shape to increase light efficiency and uniformity, caps positioned adjacent to the second set of LEDs include an aspherical shape to achieve uniform light distribution, and caps positioned adjacent to the third set of LEDs include a highly aspherical shape to create a batwing shape light distribution. 18. The imaging device of claim 12, wherein the support frame of the illuminator comprises a rigid plate and a plurality of panels, wherein the panels are arranged substantially perpendicular to a planar surface of the rigid plate. 19. The imaging device of claim 18, wherein the panels are configured to support the first set of LEDs and the rigid plate is configured to support the second set of LEDs. 20. The imaging device of claim 19, wherein the illuminator further comprises a rigid belt configured to be connected to the plurality of panels, wherein the rigid belt comprises transparent elements configured to distribute light from the first set of LEDs.
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