Edge detection apparatus and method

Details Edge detection apparatus and method Edge detection apparatus and method

2005-02-01

2005-02-01

Tran, Huan (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

With record receiver or handling means therefor

C250S559160

Reexamination Certificate

active

06850264

ABSTRACT:
An edge detection apparatus for detecting an edge on a surface. The apparatus comprises a source of coherent radiation for generating a radiation beam and directing the beam onto the surface. A radiation detector is located so as to detect radiation diffusely reflected, but not specularly reflected, from the surface. A system is provided for causing relative scanning movement between the radiation beam and the surface. A monitor is coupled to the detector for monitoring the intensity of the detected radiation.

REFERENCES:
patent: 6038028 (2000-03-01), Grann et al.
patent: 6435641 (2002-08-01), Tung et al.
patent: 6566670 (2003-05-01), Buisker et al.

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