| 摘要 |
PROBLEM TO BE SOLVED: To prevent a front lens or an image pickup element from being prostrated because of deformation of a main lens-barrel, by centering a front lens- barrel and a rear lens-barrel comprising different members different from the main lens-barrel out to an optical axis utilizing a guide shaft of a lens holding frame. SOLUTION: One-end parts 9a, 9a of two parallel guide shafts 9, 9 with plural held lens holding frames 6, 7, 8 having movable lenses are press fitted fixedly into press fit bearing holes 10, 10 formed in a front wall face 1a of a main lens-barrel 1 to be penetrated, the other-end parts of the guide shafts 9, 9 are positioned on receiving seats 11, 11 formed in a rear wall 1b of the main lens-barrel 1 to be penetrated, the guide shaft 9, 9 are held on receiving seats 13, 13 by shaft pressing frames 13, 13 provided vertically from a lid lens- barrel 12, and an auxiliary lend-barrel 17 of front lens 16 and an auxiliary lens-barrel 23 of an image pickup element 22 are positioned to be assembled in the guide shafts 9, 9 projected from the front wall face 1a and the rear wall face 1b of the main lens-barrel 1.
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