Projection and reception type focus detecting apparatus

Details Projection and reception type focus detecting apparatus Projection and reception type focus detecting apparatus

1995-09-14

1997-01-21

Gellner, Michael L.

Photography

With exposure objective focusing means, focusing aid, or...

Having auxiliary illumination

356 301, 2502016, G03B 300

Patent

active

055963862

ABSTRACT:
A projection and reception type focus detecting apparatus, which is capable of making the range measurement in plural regions, includes a light source for illuminating an object with a beam of light, a projection optical system, a reception optical system, and a scanning device for scanning with the light beam or emitting pulses in a scanning mode when the object is illuminated with the light beam, satisfying the condition:

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