Patent ID: 9052570
Filing Date: 2015-06-09
Classification: F21V,G03B,H04N

Abstract:
1. A light-adjusting unit comprising: a pair of light-shielding plates arranged about an optical axis of an incoming light flux and configured to block the light flux in response to the amount of rotation; a pair of rotation transmitting gears configured to hold and rotate the pair of light-shielding plates respectively; a pair of supporting shafts configured to rotatably support the pair of rotation transmitting gears respectively; a supporting substrate on which the pair of supporting shafts are provided; and a pair of urging members configured to press and urge the pair of rotation transmitting gears respectively against the supporting substrate, wherein each of the pair of rotation transmitting gears includes a hole portion configured to guide the corresponding supporting shaft of the pair of supporting shafts, and a groove portion formed eccentrically with respect to a center of the hole portion and configured to be pressed by the urging member.