Illumination device
AssigneeOlympus Corporation
InventorKoichiro Furuta
Life of this patent
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Abstract
An illumination device according to the present invention includes a light output unit having an output end that outputs illumination light; a diffusion layer that is disposed in a circumferential direction centered on a predetermined axis and that receives the illumination light from the output end, guides the illumination light while diffusing the illumination light, and outputs the illumination light from a surface thereof; and a reflective layer that is provided adjacent to a surface of the diffusion layer at an inner side in a radial direction and that reflects the illumination light outward in the radial direction. The diffusion layer contains a light guide material that guides the illumination light and a diffusion material dispersed and supported in the light guide material.
Claims14
An illumination device comprising:
- a light output unit having an output end that outputs illumination light;
- a diffusion layer that is disposed in a circumferential direction centered on a predetermined axis and that receives the illumination light from the output end, guides the illumination light, while diffusing the illumination light, and outputs the illumination light from a surface thereof;
- and
- a reflective layer that is provided adjacent to a surface of the diffusion layer at an inner side in a radial direction and that reflects the illumination light outward in the radial direction,
- wherein the diffusion layer comprises a light guide material that guides the illumination light and a diffusion material dispersed and supported in the light guide material.
Dependencies are inferred from the claim text.