Patent
1984-10-23
1988-04-12
Corbin, John K.
350252, G02B 702
Patent
active
047370173
ABSTRACT:
A holding mechanism for holding an optical element comprises a holding frame and a retaining member. The holding frame includes first and second positioning portions. The optical element is positioned in one direction along parallel to the optical axis by the first positioning portion and is positioned in a direction perpendicular to the optical axis by the second positioning portion. After inserting the optical element and the retaining member into the holding frame, supersonic vibration is applied to generate heat and produce a high temperature at a contact portion of the holding frame and the retaining member, so that the contact portion welds due to the high temperature for establishing another positioning portion positioning the optical element in an opposite direction along to the optical axis. The retaining member is molded from a thermoplastic resin, and the holding frame can be made of a metal material as well as of a thermoplastic resin.
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patent: 3981759 (1976-09-01), Summo
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Ben Loha
Corbin John K.
Minolta Camera
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