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US 2016/0109221 A1Published application
Illumination apparatus, pattern irradiation device, and system
AssigneeRicoh Company, Ltd.
InventorsTatsuya TAKAHASHI, Kazuhiro Fujita, Toshiharu Murai, Takehiro Nishimori, Takahiro Kado, Jun Kishiwada
Life of this patent
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Abstract
An illumination apparatus includes: a light emitting unit that outputs light; a light condensing unit that condenses the light output from the light emitting unit; a diffusion unit that diffuses the light condensed by the light condensing unit; and a uniformizing optical system that receives the light diffused by the diffusion unit, uniformizes a brightness distribution thereof compared with that of the light being received, and outputs the resulting light.
Claims20
An illumination apparatus, comprising:
- a light emitting unit that outputs light;
- a light condensing unit that condenses the light output from the light emitting unit;
- a diffusion unit that diffuses the light condensed by the light condensing unit;
- and
- a uniformizing optical system that receives the light diffused by the diffusion unit, uniformizes a brightness distribution thereof compared with that of the light being received, and outputs the resulting light.
2 more elements
An illumination apparatus, comprising:
- a light emitting unit that outputs light;
- a light condensing unit that condenses the light output from the light emitting unit;
- a fluorescent unit that emits light by using the light condensed by the light condensing unit as excitation light;
- and
- a uniformizing optical system that receives the light emitted by the fluorescent unit, uniformizes a brightness distribution thereof compared with that of the light being received, and outputs the resulting light.
2 more elements
Dependencies are inferred from the claim text.