Optical unit and method of fixing optical elements in optical un

Details Optical unit and method of fixing optical elements in optical un Optical unit and method of fixing optical elements in optical un

1992-05-13

1993-09-14

Ben, Loha

Optical: systems and elements

Miscellaneous

359218, 346108, G02B 2608

Patent

active

052454819

ABSTRACT:
This invention relates to a device and a method for securing optical elements to a housing. The optical elements such as a tertiary lens, a fourth lens, a reflecting mirror, and a filter glass are received in the housing and bonded to the same by means of a visible ray hardening type bonding agent. A maximum bonding strength can be obtained by setting the bonding agent to have a thickness of 10-100 .mu.m and a hardness of 80 or less on the A-scale based on the Shore hardness test. Further, much time is not required for hardening the bonding agent.

REFERENCES:
patent: 4723833 (1988-02-01), Yamada
patent: 4778253 (1988-10-01), Siga et al.
patent: 4805993 (1989-02-01), Blumentritt et al.
patent: 4943127 (1990-07-01), McRight
patent: 5091793 (1992-02-01), Goto et al.
patent: 5124830 (1992-06-01), Omura et al.

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