Display device for a camera for accurately displaying a rangefin

Details Display device for a camera for accurately displaying a rangefin Display device for a camera for accurately displaying a rangefin

1995-08-18

1998-02-24

Malley, Daniel P.

Photography

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

Having viewfinder

396 89, 396149, G03B 1720

Patent

active

057219826

ABSTRACT:
A camera viewfinder device adapted for use in a camera having a photographic lens for photographing a subject and a rangefinder system for producing rangefinding information. The viewfinder device includes a display unit having multiple display parts that indicate a rangefinding spot within a viewfinder field and a control device that selectively controls the illumination and indication states of the multiple display parts of the display unit to produce the rangefinding spot based on information about photographic conditions including the focal length of the photographic lens and the rangefinding information. Also provided is a display device for use in a camera having a photographic lens for photographing a subject and a rangefinder system for producing rangefinding information. The display device includes a display unit defining a field of view and having multiple electro-luminescent or electro-optical display parts that indicate a rangefinding spot within the field of view and a control device controlling the illumination or indication states of the multiple electro-luminescent or electro-optical display parts of the display unit to produce the rangefinding spot based on information about photographic conditions including the focal length of the photographic lens and the rangefinding information.

REFERENCES:
patent: 4855782 (1989-08-01), Kobayashi et al.
patent: 5019854 (1991-05-01), Mukai et al.
patent: 5204715 (1993-04-01), Nakanishi et al.
patent: 5235380 (1993-08-01), Yamada et al.
patent: 5241337 (1993-08-01), Betensky et al.
patent: 5452034 (1995-09-01), Ichikawa et al.

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