Lens mount accessory system

Details Lens mount accessory system Lens mount accessory system

1991-04-12

1992-04-14

Ben, Loha

Optical: systems and elements

Absorption filter

With support or frame

359819, 359813, 359611, 359889, 354295, G02B 700, G02B 702

Patent

active

051053128

ABSTRACT:
A positioning wheel resiliently engages and moves an optical element to a selected position within a channel of a holder mounted in front of a camera lens. A brake mechanism prevents the optical element from accidentally falling out of the channel. A handle-operated camming mechanism provides for a quick lock/unlock interlock of a rotary holder in a desired angular orientation.

REFERENCES:
patent: 3377427 (1968-04-01), Fischer
patent: 3656841 (1972-04-01), Heinonen, Jr.
patent: 4032939 (1977-06-01), Elton
patent: 4563063 (1986-01-01), Coquin
patent: 4572614 (1986-02-01), Lisfeld et al.
patent: 4746955 (1988-05-01), Slayton et al.

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