Light-adjusting unit and projector
AssigneeSeiko Epson Corporation
InventorFumio Yuzawa
Life of this patent
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Abstract
A light-adjusting unit includes: a pair of light-shielding plates arranged about an illuminating 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.
Claims18
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.
Dependencies are inferred from the claim text.