Focus adjusting device in binocular

Details Focus adjusting device in binocular Focus adjusting device in binocular

1983-10-05

1985-07-30

Punter, William H.

350552, G02B 706

Patent

active

045318174

ABSTRACT:
A binocular is provided with a double-cam mechanism between an operation member and an eyepiece portion. The rotation of the operation member is converted by the double-cam mechanism into an axial movement of the eyepiece portion. With this structure, quick and smooth focus adjusting can be carried out.

REFERENCES:
patent: 3712704 (1973-01-01), Sato
patent: 4066329 (1978-01-01), Gerrit
patent: 4470671 (1984-09-01), Ishida

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