Distance measuring apparatus

Details Distance measuring apparatus Distance measuring apparatus

1996-05-29

1997-07-29

Perkey, W. B.

Photography

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

Temperature compensating

396 98, 396104, 396106, 396147, G03B 1336

Patent

active

056529260

ABSTRACT:
A distance measuring apparatus for measuring a distance to an object, which comprises an active distance measuring unit, a passive distance measuring unit, a parameter determining unit, a memory and a distance-value selecting circuit. The memory stores a distance measurement value look-up table and a parameter look-up table. The distance-value selecting circuit outputs an active distance measurement value or a passive distance measurement value as a distance to the object on the basis of first type active and passive distance measurement points picked up from the distance measurement value look-up table and second type active and passive distance measurement points picked up from the parameter look-up table.

REFERENCES:
patent: 4518242 (1985-05-01), Toyama
patent: 4592638 (1986-06-01), Kaneda et al.

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