Light-adjusting unit and projector

摘要

A light-adjusting unit includes: a light-shielding plate centered an optical axis of an incoming light flux and configured to block the light flux in response to the amount of rotation; a rotation transmitting gear configured to hold and rotate the light-shielding plate; a supporting shaft configured to rotatably support the rotation transmitting gear; and a supporting substrate on which the supporting shaft is provided, and the light-shielding plate is provided on one surface side of the supporting plate, and the rotation transmitting gear is provided on the other surface side of the supporting substrate opposite to the one surface side.

主权项

1. A light-adjusting unit comprising:
a light-shielding plate configured to block light flux traveling in a light flux direction in response to the amount of rotation; a rotation transmitting gear configured to hold and rotate the light-shielding plate; a supporting shaft configured to rotatably support the rotation transmitting gear; a supporting substrate on which the supporting shaft is provided; and a motor as a drive source, the motor including a motor body, a spindle, and a pinion configured to transmit the rotation of the motor to the rotation transmitting gear, wherein
the light-shielding plate is provided on one surface side of the supporting substrate,the rotation transmitting gear is provided on the other surface side of the supporting substrate opposite to the one surface side,the pinion is provided on the other surface side of the supporting substrate, andthe pinion is positioned between two rotation transmitting gears including the rotation transmitting gear and directly abuts the two rotation transmitting gears, anda portion into which the motor body is inserted is defined in the supporting substrate, the motor body extending through the portion of the supporting substrate into which the motor body is inserted and oriented such that the spindle extends generally in the light flux direction.