Lens barrel

Details Lens barrel Lens barrel

1991-12-13

1993-11-23

Ben, Loha

Optical: systems and elements

Lens

With variable magnification

359694, 359823, 35419512, 358225, G02B 1514

Patent

active

052649660

ABSTRACT:
A lens barrel of simplified structure including a focusing member supported rotatably about the optical axis and having a gear portion, a lens support member moved in the axial direction in response to the rotation of the focusing member about the optical axis, a driving source provided in a part of the lens support member, and a gear mechanism provided in a part of the lens support member and meshing with the gear portion of the focusing member.

REFERENCES:
patent: 4161756 (1979-07-01), Thomas
patent: 4275952 (1981-06-01), Uesugi
patent: 4639083 (1987-01-01), Fuziwara et al.
patent: 4950060 (1990-08-01), Nagasaka
patent: 4993815 (1991-02-01), Yamazaki et al.
patent: 4999656 (1991-03-01), Shimizu et al.
patent: 5115348 (1992-05-01), Notagashira

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