Blur detecting apparatus

Details Blur detecting apparatus Blur detecting apparatus

1991-02-19

1991-12-10

Adams, Russell E.

354 70, G03B 708

Patent

active

050722514

ABSTRACT:
A blur detecting apparatus is provided with a light projecting means for projecting a signal light, light receiving means for receiving the signal light projected from the light projecting means and detecting the received position of the signal light, guide means for guiding the signal light projected from the light projecting means to the light receiving means, and varying means for varying the guiding action of the guiding means in conformity with blur and varying the received position of the signal light received by the light receiving means and in which the blur state is detected from the received position of the signal light detected by the light receiving means.

REFERENCES:
patent: 3711178 (1973-01-01), Humphrey
patent: 4996545 (1991-02-01), Enomoto et al.

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