Detector position adjusting mechanism for rangefinder automatic

Details Detector position adjusting mechanism for rangefinder automatic Detector position adjusting mechanism for rangefinder automatic

1990-10-24

1992-03-24

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

354403, G01J 120, G03B 300

Patent

active

050991124

ABSTRACT:
A detector position adjusting mechanism for a rangefinder in an automatic focusing system having a light emitting element, a photodetector and a detecting circuit is disclosed. In the adjusting mechanism, a first biasing member biases the light emitting element in one direction parallel to the optical axis of the light emitting element so as to urge the light emitting element towards a reference surface of a holding body for holding the light emitting element, and a second biasing member biases the light emitting element toward the holding body in a direction parallel to the base line. Furthermore, an adjustment member is engaged in a cam surface of the light emitting element so as to reposition the light emitting element in the direction parallel to the base line.

REFERENCES:
patent: 4278340 (1981-07-01), Toyama et al.
patent: 4350418 (1982-09-01), Taguchi et al.
patent: 4412129 (1983-10-01), Duncan
patent: 4453812 (1984-06-01), Suzuki et al.
patent: 4643555 (1987-02-01), Wakabayashi
patent: 4682886 (1987-07-01), Toyama et al.
patent: 4696559 (1987-09-01), Kondo
patent: 4828383 (1989-05-01), Kunishige et al.

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