Detection system for a radiation profile line
AssigneeB.V. Optische Industies "De Oude Delft"
InventorGijsbert L. Oomen
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Abstract
A radiation profile line originates from illuminating a scene by a fan beam of radiation and imaging the thus illuminated scene on a surface of an array of photosensitive elements. A read-out circuit has inputs connected to associated detection elements in the uppermost row. The read-out circuit comprises level detector circuitry to have the output signals of the columns take up either a "1" state or a "0" state. The outputs of the level detector curcuitry, each one of which corresponds to one of the inputs, are connected to a circuit that delivers a digital code representative of the position of the element in the uppermost row which has received the largest amount of light.
Claims9
A detection system for a radiation profile line which comprises:
- a matrix-containing M rows (1a, . . . , 1h) and N columns (2a, . . . , 2h) of photosensitive detection elements;
- means for shifting output signals of said detection elements under control clock signals and a read-out circuit having an input connected to an associated detection element, said read-out circuit comprising level detector circuitry, said shifting means shifting output signals of said detection elements row by row in a column direction, said input of said read-out circuit comprising said level detector circuitry, said level detector circuitry being coupled to an M.sup.th detection element of each column, said level detector having N outputs corresponding to a respective column, said outputs of said level detector circuitry being coupled to a circuit delivering a digital code representative of the position of an element in the M.sup.th row receiving the largest amount of light.
Dependencies are inferred from the claim text.