Illuminating device for projecting light
First Claim
1. An illuminating device comprising light source means and an optical member, said illuminating device being arranged to project a light beam emitted from said light source means, via said optical member as illuminating light, said optical member including a plurality of light guides each having an entrance surface opposed to said light source means, reflecting surfaces for reflecting the light beam which enters said optical member through the entrance surface, and an exit surface opposed to the entrance surface and having an area larger than the entrance surface, the plurality of light guides being adjacently disposed in such a manner that each of air layers is formed in at least part of each area at which the plurality of light guides are adjacent to each other, said light source means having a flash discharge tube, and the plurality of light guides being arrayed in a direction of an arc length of the flash discharge tube.
1 Assignment
0 Petitions
Accused Products
Abstract
An illumination device includes a light source and an optical member, and is arranged to project a light beam emitted from the light source, via the optical member as illuminating light. The optical member includes a plurality of light guides each having an entrance surface opposed to the light source means, reflecting surfaces for reflecting the light beam which enters the optical member through the entrance surface, and an exit surface opposed to the entrance surface and having an area larger than the entrance surface. The plurality of light guides are adjacently disposed in such a manner that each of air layers is formed in at least part of each area at which the plurality of light guides are adjacent to each other.
-
Citations
24 Claims
- 1. An illuminating device comprising light source means and an optical member, said illuminating device being arranged to project a light beam emitted from said light source means, via said optical member as illuminating light, said optical member including a plurality of light guides each having an entrance surface opposed to said light source means, reflecting surfaces for reflecting the light beam which enters said optical member through the entrance surface, and an exit surface opposed to the entrance surface and having an area larger than the entrance surface, the plurality of light guides being adjacently disposed in such a manner that each of air layers is formed in at least part of each area at which the plurality of light guides are adjacent to each other, said light source means having a flash discharge tube, and the plurality of light guides being arrayed in a direction of an arc length of the flash discharge tube.
Specification