Distance-measuring apparatus

Details Distance-measuring apparatus Distance-measuring apparatus

1997-07-15

1999-07-06

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

Triangulation ranging with photodetection, but with no...

2502016, 180167, 340903, 396121, 396128, G01C 300

Patent

active

059203820

ABSTRACT:
A distance-measuring apparatus includes light-sensitive devices formed of optical sensor arrays disposed on image-forming surfaces of right and left image-forming lenses, respectively. The apparatus uses image data from the optical sensor arrays of the light-sensitive devices to determine the distance from an object such as a vehicle in front of the apparatus via a distance detection circuit and capable of detecting condensation or a foreign particle obscuring a cover glass or defective pixels in the optical sensor arrays. In a defective condition, a defective visibility sensor emits an alarm signal to alert the operator.

REFERENCES:
patent: 4766421 (1988-08-01), Beggs et al.
patent: 5166681 (1992-11-01), Bottesch et al.

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