Focus detecting device with relative movement detection

Details Focus detecting device with relative movement detection Focus detecting device with relative movement detection

1982-06-18

1985-07-02

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

354406, G01J 120

Patent

active

045270538

ABSTRACT:
This specification discloses a detecting device provided with means for receiving radiation coming from an object and producing an electrical signal related thereto, focus detecting means for processing the produced electrical signal and producing a focus discrimination or determination signal, the detecting means forming a focus related or parametric signal in the course of the processing of the electrical signal, and relative movement detecting means coupled to the focus detecting means to detect the relative movement between the object and the device on the basis of the focus related or parametric signal.

REFERENCES:
patent: 4218119 (1980-08-01), Schickedanz
patent: 4264161 (1981-04-01), Hosoe et al.
patent: 4341953 (1982-07-01), Sakai et al.

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