Method for determining aperture shape

Details Method for determining aperture shape Method for determining aperture shape

1989-08-03

1990-09-25

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250216, 2502081, H04N 110

Patent

active

049595415

ABSTRACT:
A mathematical method for selecting the shape for an occluding aperture which is to be positioned at a predetermined aperture location in a light path extending between an illuminated line object and a linear photosensor array. Through use of the aperture selected according to the method, a light intensity measurement is obtained across the linear photosensor array which is uniformly proportional to the light intensity across the illuminated line object.

REFERENCES:
patent: 4495422 (1985-01-01), Wiggins
patent: 4644159 (1987-02-01), Miura
patent: 4709144 (1987-11-01), Vincent
patent: 4870268 (1989-11-01), Vincent
patent: 4926041 (1990-05-01), Boyd
Advanced Engineering Mathematics, 3rd Ed., of Erwin Kreyszig, pub. by John Wiley & Sons, Inc., of New York, NY, Lib. of Congress Cat. No. 71-172951, Sections 18.5 (pp. 653-661) and 18.11 (pp. 681-683).
"Fitting Curves to Data," by Marco S. Caceci & William P. Cacheris of Florida State University, Byte Magazine,m May 1984 Ed., pp. 340-362.

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