| 摘要 |
PROBLEM TO BE SOLVED: To realize an easy design by eliminating need for increasing the accuracy of part inside a lens barrel. SOLUTION: The reference positions 11c and 11d of the base end part of jigs 11 and 12 abut on the optical reference surfaces 1c and 1d of a fixed frame 1, and a third lens group holding frame 5 and a second lens group holding frame 4 are respectively assembled from the circumferential direction of the frame 1 while being guided by the jigs 11 and 12. After the base ends of the respective frames 4 and 5 in the circumferential direction are fixed to the circumferential surface of the respective lens groups by adhesive, etc., as stated above, the jigs 11 and 12 are drawn out from the inside of the lens barrel. |
