发明名称 FOCAL POINT DETECTOR
摘要 PURPOSE:To miniaturize the optical member without impairing the operating efficiency in mounting/adjusting, by fixing an integral optical member, having a plurality of projections in a direction substantially perpendicular to an optical axis, and a retainer member, having grooved portions into which the projections are fitted, by filling an adhesive agent between the projections and the grooved portions. CONSTITUTION:A housing 5 is retained in a posture in which the surface of a lens 4 seen in the view is directed right upwards in a state wherein a re-imaging lens 4 is sufficiently forced into the housing 5 so as to cause the tip ends of columnar projections 43 to 46 of the re-imaging lens to contact with an abutment surface of the housing 5. Then, from the positions indicated by arrow marks D1, D2, D3 and D4, an adhesive agent is caused to drop into grooved portions 56 to 59 corresponding to arm-like projections 47 to 50 by using a commercially available liquid dispenser. The adhesive agent is pooled in a clearance between the surrounding surface of each arm-like projection and the inner wall surface of the corresponding grooved portion facing this surrounding surface in such a manner as to bridge the two opposing surfaces and then is cured. Since the amount of the adhesive agent capable of being pooled in each clearance is set to be large, the agent can be prevented from being carried into the housing 5 from the clearance to contaminate a lens portion 40 and light transmission portions of a stop mask 6.
申请公布号 JPH04190210(A) 申请公布日期 1992.07.08
申请号 JP19900320307 申请日期 1990.11.22
申请人 NIKON CORP 发明人 KUWATA TOMOYUKI;KISHIKAWA ISAO;AKIMOTO HIDEYUKI;MASUDA KENICHI;MORIYA MASAMI
分类号 G03B13/36;G02B7/02;G02B7/34 主分类号 G03B13/36
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