Zoom lens barrel

Details Zoom lens barrel Zoom lens barrel

1994-01-11

1995-11-14

Epps, Georgia Y.

Optical: systems and elements

Lens

With variable magnification

359699, 359707, 359700, 359701, G03B 118, G02B 1514

Patent

active

054672279

ABSTRACT:
A zoom lens barrel is provided which comprises a pair of cylindrical members, which are interconnected by respective helicoids, and a discontinuous linear guide groove which is formed by cutting away outer pheripheral portions of the helicoid thereby forming a plurality of key grooves, wherein the guide groove is extended in a direction parallel with an optical axis of the zoom lens barrel.

REFERENCES:
patent: 4227791 (1980-10-01), Komoto
patent: 4564264 (1986-01-01), Komoto
patent: 4911542 (1990-03-01), Nishio et al.
patent: 5043752 (1991-08-01), Kohmoto
patent: 5144493 (1992-09-01), Nomura
patent: 5221993 (1993-06-01), Nomura
patent: 5231449 (1993-07-01), Nomura
patent: 5245476 (1993-09-01), Shono
patent: 5262898 (1993-11-01), Nomura

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