Eye span adjustment mechanism for binoculars

Details Eye span adjustment mechanism for binoculars Eye span adjustment mechanism for binoculars

1979-12-28

1981-08-18

Henry, Jon W.

350 47, 350 76, G02B 706, G02B 711, G02B 712

Patent

active

042843251

ABSTRACT:
Binoculars including an eye span adjustment mechanism and an automatic focussing feature. A pair of guide rails is disposed laterally in the binoculars housing. Drive rods threadedly engaged with the lens barrels are movable along the guide rails to move the lens barrels back and forth in response to rotation of a knob and adjustment rod. An automatic focussing is disposed between the lens barrel to move the ocular lens in response to an electronically produced focussing signal.

REFERENCES:
patent: 2845842 (1958-08-01), Leitz et al.
patent: 4123765 (1978-10-01), Isono
patent: 4162123 (1979-07-01), Isono

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