Drive apparatus for a focusing lens

Details Drive apparatus for a focusing lens Drive apparatus for a focusing lens

1988-04-13

1990-05-08

Perkey, W. B.

354402, 354 75, 354 80, 354 81, G03B 300, G03B 2900

Patent

active

049242539

ABSTRACT:
A focusing lens drive apparatus in which an adjusting value for adjusting an fc error in an EEPROM of a digital memory has been stored, determines an amount of driving a focusing lens, when a CPU receives a measured range data from an AFIC, by calculation based on the measured range data and the adjusting value stored in the digital memory and drives the focusing lens by controlling a lens drive mechanism in accordance with the determined amount of driving the focusing lens. In addition, in a camera with a zoom lens and a camera of the two focus switching type, a plurality of adjusting values are stored in the digital memory in response to information of focal length.
Furthermore, such adjusting values are stored in the digital memory to adjust an fc error as well as an AF error in a range finder.

REFERENCES:
patent: 3046555 (1962-07-01), Richard et al.
patent: 4123768 (1978-10-01), Kilshaw et al.
patent: 4423934 (1984-01-01), Lambeth et al.
patent: 4457603 (1984-07-01), Gebhart et al.
patent: 4616912 (1986-10-01), Johnsen
patent: 4692005 (1987-09-01), Takami
patent: 4737814 (1988-04-01), Nakajima
patent: 4751538 (1988-06-01), Konno

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