Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1984-02-07
1986-05-13
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250205, 134 38, 219121LB, 356328, G01N 2127
Patent
active
045888850
ABSTRACT:
A method and apparatus for controlling the stripping of paint and the like from a substrate is disclosed. Embodiments for controlling the stripping of paint and the like by pulses of high intensity radiant energy are described. The control is accomplished by illuminating the area of the paint and the like which is to be stripped and subjecting the light reflected therefrom to spatial spectral dispersion. The spatial spectral dispersion is sensed and an electronic signal representative thereof is generated. The generated electronic signal is compared to a pre-recorded electronic signal representative of the spatial spectral dispersion of light reflected from the paint and the like which is to be stripped before each pulse of high intensity radiant energy and the pulse is applied only upon such comparison resulting in a substantial match. Methods and means for normalization of the sensed spatial spectral dispersion and for utilizing mismatch comparisons are disclosed.
REFERENCES:
patent: 3700850 (1972-10-01), Lumley et al.
patent: 4176946 (1979-12-01), Takahashi
patent: 4381894 (1983-05-01), Gogol, Jr. et al.
Frank Alan M.
Lovoi Paul A.
Freiburger Thomas M.
International Technical Associates
Westin Edward P.
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