Optical apparatus with power transmission mechanism

Details Optical apparatus with power transmission mechanism Optical apparatus with power transmission mechanism

1998-03-18

1999-09-28

Epps, Georgia

Optical: systems and elements

Lens

With variable magnification

359696, 359699, 359822, G02B 1514, G02B 702

Patent

active

059597860

ABSTRACT:
An optical apparatus includes an optical unit, a manual operation ring for manually driving the optical unit, a driving motor for electrically driving the manual operation ring, a transmission driving force limiting member for liniting a transmission driving force between the manual operation ring and the driving motor, the transmission driving force limiting member being formed in a ring shape substantially cocentric with an optical axis of the optical unit, a speed reduction gear for transmitting a driving force from the driving motor to the transmission driving force limiting member, wherein the following condition is satisfied:

REFERENCES:
patent: 5715101 (1998-02-01), Nakamura et al.

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