Method of estimating a distance

Details Method of estimating a distance Method of estimating a distance

2011-08-09

2011-08-09

Nguyen, Tu T (Department: 2886)

Optics: measuring and testing

Range or remote distance finding

Reexamination Certificate

active

07995188

ABSTRACT:
The invention relates to a method of estimating a distance to a surface, whereby an emitter emits light towards a surface, at least some light being reflected by the surface, the surface comprising a detectable feature, the reflected light being received by a first receptor and by a second receptor, the surface being in movement relative to the receptors, the first and the second receptor receiving the light reflected at a first and at a respectively second angle thereby producing a first and a respectively second dataset, each dataset including data representing said feature, the first and the second angle being different, whereby the distance is estimated using the first and the second dataset.

REFERENCES:
patent: 4822170 (1989-04-01), Bonnefoy et al.
patent: 6147761 (2000-11-01), Walowit et al.
patent: 2004/0080553 (2004-04-01), Kim
patent: 2004/0135087 (2004-07-01), Martenson
patent: 2005/0110822 (2005-05-01), Hwang

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