Drive apparatus for an optical system

Details Drive apparatus for an optical system Drive apparatus for an optical system

1975-12-23

1977-11-08

Clark, Conrad J.

350255, 354195, G02B 704

Patent

active

040573273

ABSTRACT:
A drive apparatus for the axial displacement of components of an optical system to effect focusing or zooming adjustment includes a first drive assembly of servo type and a second drive assembly. The first drive assembly is provided with a clutch connected thereto and to an operable member for displacing the displaceable components along the optical axis of the optical system upon setting the clutch in the engaged position to transmit the motion of the servo motor to the operable member. The setting of the clutch into the disengaged position can be effected by attachment of a manual drive mechanism to the second drive assembly from the outside of the housing. Thus, the apparatus can be readily set to either of the mechanical and manual operation conditions.

REFERENCES:
patent: 3224351 (1965-12-01), Strasser
patent: 3324780 (1967-06-01), Miyauchi
patent: 3424514 (1969-01-01), Back et al.
patent: 3834796 (1974-10-01), Komine

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