Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1990-02-23
1991-04-30
Fields, Carolyn E.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
250369, 250349, G01D 2100
Patent
active
050120824
ABSTRACT:
A two-dimensional incident position detector device for radiation, the device comprising a detector array including a plurality of detection cells in two-dimensional arrangement, and a comparator circuit for comparing an output from a noticed detection cell with outputs from all detection cells adjacent to said noticed cell, whereby a position of the noticed cell is decided as an incident position of light or radiation when the output from the noticed cell is larger than the outputs from all adjacent detection cells.
REFERENCES:
patent: 4672542 (1987-06-01), Roux et al.
patent: 4852056 (1989-07-01), Rogers et al.
Dunn Drew A.
Fields Carolyn E.
Hamamatsu Photonics K.K.
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