STRUCTURE FOR ASSEMBLING TWO LENS BARRELS

摘要

PROBLEM TO BE SOLVED: To assemble lens barrels holding lenses in a state where their axes are inclined by butting both lens barrels provided with axial direction ends in surface constitution where their own axial centers are set as reference and interposing a wedged ring spacer inclined at a tilt angle between their axial centers between the axial direction ends. SOLUTION: The 1st lens barrel 50 housing and holding a 1st lens 10 with decentration and a 2nd lens 20 with decoentration and the 2nd lens barrel 60 housing and holding a 3rd lens with 30 decentration and a 4th eccentric lens 40 are provided with the axial direction ends 53 and 63 in the surface constitution where their own axial centers L1 and L2 are set as the reference. By butting both lens barrels 50 and 60 and interposing the wedged ring spacer 70 inclined at the tilt angleθbetween the axial centers L1 and L2 between the ends 53 and 64, the 1st and the 2nd lens barrels 50 and 60 are assembled in the state where their axial centers L1 and L2 are inclined. Thus, both lens barrels are easily assembled by inclining their axes by a desired angle without alinging them.