Patent ID: 9405114
Filing Date: 2016-08-02
CPC Classification: A61B,G02B,G03B

Claim Text:
1. A camera module for an endoscope, comprising: a taking lens having a lens element movable along an optical axis thereof; a prism positioned behind the taking lens, the prism reflecting incident light at an approximately right angle to the optical axis; a circuit board having an imaging device mounted thereon, the imaging device having an imaging surface on which an optical image is formed through the taking lens and the prism, the imaging device converting the optical image to an electric signal; and a lens drive mechanism for moving the movable lens element, comprising: wherein the rotary shaft consists of a number of rotators aligned to be rotatable on a common axis that is parallel to the optical axis, wherein adjacent two of the rotators are coupled to each other with a predetermined rotary play, to transmit the rotary motion of the drive shaft sequentially from a rear side one of the rotators, which is coupled to the power transmission mechanism, toward a front side one of the rotators, which is coupled to the movable lens.