LENS-FIXING DEVICE AND LENS BARREL USING THE SAME

摘要

PROBLEM TO BE SOLVED: To maintain with high accuracy for the interval between lenses to be at a predetermined interval by surely fixing the lenses.;SOLUTION: The lens-fixing mechanism 130 has a third reference face 104, a first spacer 122 and an adjustment screw 131. The third reference face 104 is disposed in a direction perpendicular to an optical axis in the inside a lens barrel 100, and used for positioning the movement of a lens in the direction of the optical axis. The first spacer 122 is disposed between a pair of lenses within the lens barrel 100, has a fixed length in the direction of the optical axis corresponding to the interval between the pair of lenses, and is freely slid in the direction of the optical axis. The adjustment screw 131 is disposed within the lens barrel 100, pressed against in the direction of the spacer, and presses, via the spacer, one of the pair of lenses, which is located between a positioning part and the spacer, toward the positioning part along the optical axis.;COPYRIGHT: (C)2007,JPO&INPIT