ROTARY OPTICAL FILTER DEVICE

摘要

PROBLEM TO BE SOLVED: To easily dispose optical filters with high accuracy in such a state that the optical filters adjacent to each other are separated at a minute distance from each other by using a holding member having barrier wall chips. SOLUTION: Three optical filters 30 are arranged in the circumference direction around an axial line 11 and fixed to a holding member 40 and to a supporting body 20. The holding member 40 has three barrier wall chips 43 in the periphery of the base 42 and each barrier wall chip 43 is present between adjacent optical filters 30 and in contact with both filters to keep a small gap 50 to separate the filters from each other at a small distance.