| 摘要 |
PURPOSE:To improve the assembly property by providing a groove part on the opposed surface of lens holding frames which have been divided into two. CONSTITUTION:When executing an assembly, first of all, a lens 14 is pushed in and fixed to a groove part which has been constituted of a lens control part 16 of one split lens barrel 10, a lens holding part 14, and an elastic piece 15. In this case, since the elastic piece 15 is deformed,the lens 11 is pressed in the optical axis direction, and a lens interval can be held. In the same way, other lenses 12, 13 are also pushed into the respective groove parts. In the end, an adhesive agent whose viscosity is comparatively high is applied to a groove 23 of the split lens barrel into which all the lenses have been inserted, and thereafter, said lens barrel is covered with the other split lens barrel 10, the lenses are installed to the respective groove parts, and two pieces of split lens barrels 10 and the lenses 11-13 are made to adhere closely to each other, by which optical axes of each lens coincide, and after the adhesive agent has been hardened, the assembly is completed.
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