Patent ID: 7394057
Filing Date: 2008-07-01
Classification: B60Q,F21S,F21V,G02B,H04N

Abstract:
1. An illuminating device comprising: a light source; a first reflector, arranged on an optical center on which the light source is disposed, that irradiates in a forward direction light beams emitted from the light source; a second reflector that has an aperture provided on an optical axis thereof and is disposed in front of the first reflector so as to reflect toward the light source the light beams irradiated from the first reflector to condense the light beams; a third reflector disposed between the first reflector and the second reflector so as to make the light beams condensed by the second reflector exit through the aperture; and a reflector moving means for supporting the second reflector or the third reflector and moving the supported reflector along the optical axis; and wherein the reflector moving means moves the second reflector or the third reflector to change distance therebetween, whereby an quantity of light beams that pass through and exit from the aperture is adjusted.