Patent ID: 6280082
Filing Date: 2001-08-28
Classification: G01J,Y10S

Abstract:
A projector, for use in a measuring device, comprising:an emitter which emits a beam of visible light to a measurement object along a predetermined optical axis;a rotary optical member which is operable to change the propagation direction of the visible light beam with respect to the predetermined optical axis in accordance with rotation of the rotary optical member, wherein the rotary optical member is operable to reflect the visible light beam, and is formed with a reflective portion operable to reflect the visible light beam emanating therefrom at a slightly inclined angle with respect to a fixed axis normal to the predetermined optical axis, wherein the rotary optical member includes a first planar surface disposed normal to the rotation axis and wherein the reflective portion is defined by an opposing planar reflective surface arranged in a manner that is not parallel to the first planar surface; anda driver which rotates the rotary optical member about a rotation axis.