| 摘要 |
<P>PROBLEM TO BE SOLVED: To provides a lens assembly that maintains excellent optical performance and a method of inserting an optical member in a ceramic lens frame provided to the lens assembly. Ž<P>SOLUTION: A solid lubricant K is applied to at least a part of the inner peripheral surface of the ceramic lens frame 10 into which a plurality of optical members composed of lenses L1 to L4 and spacing rings SP1 to SP3 are inserted, and which is brought into contact with at least the outer peripheral surfaces of the optical members. Alternatively, the solid lubricant K is applied to at least the outer peripheral surfaces of the optical members composed of the lenses L1 to L4 and the spacing rings SP1 to SP3. Subsequently, the lenses L1 and L4 and spacing rings SP1 to SP3 are alternately inserted into the ceramic lens frame 10 and then pressed by a pressing ring 11. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
|
