LENS BARREL

摘要

PURPOSE:To facilitate a position adjustment of a focusing point lens in an optical-axis direction by adjusting the relative position of the 2nd barrel in the optical-axis direction by the rotation of an eccentric pin, and fixing the eccentric pin by a fixing means in the adjusted state. CONSTITUTION:A moving lens barrel 10 is fitted slidably around a fixed lens barrel 9 and a lens holding part 10a is provided to the inner circumferential surface of this moving lens barrel 10. The focusing point lens 11 is clamped fixedly between the lens holding part 10a and a lens presser frame 12. The moving lens barrel 10 is provided with a rotation-angle specifying pin 13 which enters the notch part 9a of the fixed lens barrel 9 and this pin 13 abuts on the fixed lens barrel 9 to restrict the rotation of the moving lens barrel 10. The moving lens barrel 10 is provided with a cam groove 14 and a cam follower 15 fitted therein is fixed to the fixed lens barrel 9 by a fixing screw 16 which pierces a through hole formed at a distance apart from the center of the cam follower; and this screw 16 is necessarily loosened to rotate the cam follower around the center of the screw 16.