Range finder apparatus

Details Range finder apparatus Range finder apparatus

1995-03-30

1998-02-17

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

Triangulation ranging to a point with one projected beam

2502016, 356 304, 356 306, 356 307, 396106, G01C 300, G03B 300

Patent

active

057196630

ABSTRACT:
An active type range finder apparatus comprises a light projecting element having a base, a lead frame disposed on the base, at least one light emitting member disposed on the lead frame for emitting light to a subject, and at least one control terminal disposed on the base for controlling the light emitting member. A light receiving element is disposed at a base length from the light projecting element for receiving light reflected by the subject. The lead frame and the control terminal of the light projecting element have end portions arranged outside an extension region of the light emitting member in a direction of the base length. When the light emitting member is illuminated, scattered light is prevented from being projected within the extension region of the light emitting member in the direction of the base length, thereby preventing distance measurement errors.

REFERENCES:
patent: 4375332 (1983-03-01), Yokota et al.
patent: 4464038 (1984-08-01), Nanba
patent: 5150146 (1992-09-01), Ueda et al.
patent: 5196689 (1993-03-01), Sugita et al.

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