Optical apparatus

Details Optical apparatus Optical apparatus

1991-10-01

1992-09-22

Ben, Loha

Optical: systems and elements

Lens

With variable magnification

359696, 359823, 3541951, G02B 1500

Patent

active

051502607

ABSTRACT:
An optical apparatus comprises a lens holding member holding a lens, a guide member for guiding the movement of the lens holding member in the direction of the optical axis, a gear shaft rotatable by a drive source, and a moving member having a gear portion meshing with the gear shaft and movable in the direction of the optical axis by the rotation of the gear shaft to thereby move the lens holding member in the direction of the optical axis, the moving member being supported for rotation in a direction substantially orthogonal to the axial direction of the gear shaft.

REFERENCES:
patent: 2746350 (1956-05-01), Hopkins
patent: 3106125 (1963-10-01), Martin et al.
patent: 5016993 (1991-05-01), Akitake

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