Patent ID: 7742159
Filing Date: 2010-06-22
Classification: G01B,G02B,G03B

Abstract:
1. An apparatus for checking concentricity between a barrel holder and a lens barrel rotatably engaged in the barrel holder, the lens barrel including at least one lens coaxially received therein, the apparatus comprising: a barrel holder retaining member for fixedly retaining the barrel holder in position, wherein the barrel holder retaining member comprises a platform having a recess defined therein for engagingly receiving the barrel holder therein and a sliding slot adjacent to the recess, the sliding slot extending in a radial direction from a center of the recess; a rotating member having an outer periphery meshing with an outer periphery of the lens barrel; a driving unit coupled to the rotating member for driving the rotating member to rotate such that the lens barrel rotates correspondingly; a light source for emitting light toward a first end of the lens barrel; and an image sensor for being arranged facing toward an opposite second end of the lens barrel, the image sensor being configured for sensing the light emitted from the light source.