1988-06-07
1989-12-19
Bovernick, Rodney B.
350319, G02B 702
Patent
active
048878871
ABSTRACT:
A retainer ring (10) is provided to secure a lens (14) in a lens holder (12). The lens holder (12) has a groove (29) on its internal surface to match the external surface (34) of the ring (10). The lens (14) is placed in the lens holder (12) and the ring (10) is snapped into position in the groove (29) in lens holder (12) to secure the lens (14) therein. The lens holder (12) may then be inserted into an eyepiece (22) on a night vision goggle (20).
REFERENCES:
patent: 4303306 (1981-12-01), Ookawa
patent: 4669824 (1987-06-01), Wallace
patent: 4684231 (1987-08-01), Athy
Ben Loha
Bovernick Rodney B.
Varo Inc.
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