Illumination device and vehicle
First Claim
1. An illumination device comprising:
- a coherent light source that emits a first coherent light beam and a second coherent light beam;
an optical device that diffuses the first coherent light beam to illuminate a first illumination zone and diffuses the second coherent light beam to illuminate a second illumination zone; and
a timing control unit that controls an emission timing of the first coherent light beam and the second coherent light beam,wherein the optical device includes a first diffusion region on which the first coherent light beam is incident, and a second diffusion region on which the second coherent light beam is incident,the first diffusion region is capable of illuminating the first illumination zone by diffusion of the incident first coherent light beam,the second diffusion region is capable of illuminating the second illumination zone that is at least partially different from the first illumination zone by diffusion of the incident second coherent light beam,the first diffusion region includes a plurality of first element diffusion regions, the first element diffusion regions illuminating respective first partial regions in the first illumination zone by diffusion of the incident first coherent light beam, the first partial regions being respectively illuminated by the first element diffusion regions at least partially different from one another, andthe second diffusion region also includes a plurality of second element diffusion regions, the second element diffusion regions illuminating respective second partial regions in the second illumination zone by diffusion of the incident second coherent light beam, the second partial regions being respectively illuminated by the second element diffusion regions at least partially different from one another.
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Accused Products
Abstract
Provided is an illumination device which has a coherent light source that emits a first coherent light beam and a second coherent light beam, an optical device that diffuses the first coherent light beam to illuminate a first illumination zone and diffuses a wave of the second coherent light beam to illuminate a second illumination zone, and a timing control unit that individually controls incidence timing of the first coherent light beam and the second coherent light beam on the optical device or illumination timing of the first illumination zone and the second illumination zone, wherein the optical device includes a first diffusion region on which the first coherent light beam is incident, and a second diffusion region on which the second coherent light beam is incident, the first diffusion region is capable of illuminating the first illumination zone by diffusion of the incident first coherent light beam.
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Citations
20 Claims
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1. An illumination device comprising:
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a coherent light source that emits a first coherent light beam and a second coherent light beam; an optical device that diffuses the first coherent light beam to illuminate a first illumination zone and diffuses the second coherent light beam to illuminate a second illumination zone; and a timing control unit that controls an emission timing of the first coherent light beam and the second coherent light beam, wherein the optical device includes a first diffusion region on which the first coherent light beam is incident, and a second diffusion region on which the second coherent light beam is incident, the first diffusion region is capable of illuminating the first illumination zone by diffusion of the incident first coherent light beam, the second diffusion region is capable of illuminating the second illumination zone that is at least partially different from the first illumination zone by diffusion of the incident second coherent light beam, the first diffusion region includes a plurality of first element diffusion regions, the first element diffusion regions illuminating respective first partial regions in the first illumination zone by diffusion of the incident first coherent light beam, the first partial regions being respectively illuminated by the first element diffusion regions at least partially different from one another, and the second diffusion region also includes a plurality of second element diffusion regions, the second element diffusion regions illuminating respective second partial regions in the second illumination zone by diffusion of the incident second coherent light beam, the second partial regions being respectively illuminated by the second element diffusion regions at least partially different from one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An illumination device comprising:
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a coherent light source that emits a first coherent light beam and a second coherent light beam; an optical device that diffuses the first coherent light beam to illuminate a first illumination zone and diffuses the second coherent light beam to illuminate a second illumination zone; and a timing control unit comprising an optical shutter capable of switching between transmitting and blocking the first coherent light beam and the second coherent light beam or an optical path switching member capable of switching the optical paths of the first coherent light beam and the second coherent light beam, the timing control unit controlling incidence timing of the first coherent light beam and the second coherent light beam on the optical device or illumination timing of the first illumination zone and the second illumination zone by controlling switching timing of the optical shutter or the optical path switching member, wherein the optical device includes a first diffusion region on which the first coherent light beam is incident, and a second diffusion region on which the second coherent light beam is incident, the first diffusion region is capable of illuminating the first illumination zone by diffusion of the incident first coherent light beam, the second diffusion region is capable of illuminating the second illumination zone that is at least partially different from the first illumination zone by diffusion of the incident second coherent light beam, the first diffusion region includes a plurality of first element diffusion regions, the first element diffusion regions illuminating respective first partial regions in the first illumination zone by diffusion of the incident first coherent light beam, the first partial regions being respectively illuminated by the first element diffusion regions at least partially different from one another, and the second diffusion region also includes a plurality of second element diffusion regions, the second element diffusion regions illuminating respective second partial regions in the second illumination zone by diffusion of the incident second coherent light beam, the second partial regions being respectively illuminated by the second element diffusion regions at least partially different from one another. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification