| 摘要 |
PURPOSE:To prevent optical characteristics of a lens system from deteriorating and to facilitate automatic assembly by uniting plural optical lens composite elements together by attachment through holes and coupling levers provided to their supporting frame, and thus forming a lens holding device. CONSTITUTION:The optical lens composite element is constituted while the supporting frame is molded out of resin around the outer circumferential part of a lens in one body. Washers 9 are fitted at one-side end of coupling levers 4-6 and nuts 10 are attached threadably; and those coupling levers 4-6 are inserted into the attachment through holes 1a-1c of the 1st optical lens composite element from the other sides. Then, spacer members 7 are fitted around the respective coupling levers 4-6 and then the coupling levers 4-6 are inserted into the attachment through holes 2a-2c of the 2nd optical lens composite element. Simularly, spacers 8 and the 3rd optical lens composite element are attached and then nuts 10 are attached threadably at the other-end parts of the coupling levers 4-6 with washers 9 inbetween. Thus, the high-precision optical lens holding device which facilitates automatic assembly is obtained. |
