Patent ID: 6022117
Filing Date: 2000-02-08
Classification: G02B,G03B

Abstract:
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.