| 摘要 |
PURPOSE:To switch easily a kind of a filter, and to eliminate a variation of an illuminating position by providing plural conversion filters for color temperature of different kinds so that they can be switched by an operating member, between a light source and an optical fiber bundle end part. CONSTITUTION:A conversion filter for color temperature 4 which has been constituted of plural conversion filters for color temperature 4a, 4b and 4c of different kinds is provided between a light source 1 and a lens 2 for collimating the light from this light source 1, and an incident end part of an optical fiber bundle 3. The conversion filters for color temperature 4a, 4b and 4c can be switched by an operating member. |
