Motor built-in lens mounting

Details Motor built-in lens mounting Motor built-in lens mounting

Filed on

1986-02-03

Date issued

1987-09-22

Examiner

Griffin, Donald A.

Other Related Categories

G03B 906

Type

Patent

Status

active

Patent number

046951458

Description

ABSTRACT:
A lens mounting having a diaphragm unit with a stepping motor as a drive source therefor. A bearing mechanism for the rotor of the motor is constructed with its inner ring in unified form with the rotor unit, and whether or not the diaphragm is at full open aperture is determined by detecting a particular phase of rotation of the rotor.

REFERENCES:
patent: 4113359 (1978-09-01), Kolke et al.
patent: 4472039 (1984-09-01), Iwata et al.

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