Patent ID: 7402792
Filing Date: 2008-07-22
Classification: G01J

Abstract:
1. An optical sensor comprising: a housing; a light receiving device disposed in the housing; an exterior filter rotatably mounted to an attachment surface of the housing; and a light intercepting member which rotates along with a rotation of the exterior filter to adjust an amount of light incident on a light receiving surface of the light receiving device, wherein the light intercepting member has a rotary shaft, the rotary shaft being fixed at a center portion of the light intercepting member, and has a light adjusting mechanism for adjusting the amount of light incident on the light receiving surface of the light receiving device in a range in a direction of rotation around the rotary shaft, wherein the center portion of the light intercepting member is biased from a center of rotation of the exterior filter, wherein a radius of rotation of the exterior filter is larger than a radius of rotation of the light intercepting member.