Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1990-12-24
1992-09-08
Perkey, W. B.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
2502086, 356222, G03B 7099, H01J 4014, G01J 142
Patent
active
051462583
ABSTRACT:
In the present invention there is provided a plurality of photosensitive elements arranged in a symmetrical pattern around a central circular area. The area surrounding the central area is formed of a square area having the circular area at its center with the square area divided into four equal quadrants. The next area is rectangular in shape and surrounds the second area. The rectangular area is formed in four equal sections with each of the corners of the square area lying along two adjacent edges of the rectangular areas. A selection means is provided for selecting the output signal from any one the photodiodes or for selecting the output signals from any combination of two or more of the photodiodes so as to accentuate the responsiveness of the light meter to a selected area or feature of the image to be photographed.
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Anagnostopoulos Constantine N.
Bell Cynthia S.
Gaboury Michael J.
Koudelka James R.
Williams Paul M.
Dudley Mark Z.
Eastman Kodak Company
Perkey W. B.
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