Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2004-03-01
2010-10-05
Epps, Georgia Y (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C348S315000, C348S340000
Reexamination Certificate
active
07807951
ABSTRACT:
An imaging sensor system includes an optics system that images a point feature of a scene at an image plane with a blur-circle image having a blur diameter, and a detector array at the image plane. Special array patterns and signal detector logic are used to improve the accuracy of the determination of the object location. In one form, the detector array is a one-dimensional detector array comprising a plurality of detector subelements each having a width of from about ½ to about 5 blur diameters, and a length of n blur diameters. Each detector subelement overlaps each of two adjacent detector subelements along their lengths. An overlap of each of the two adjacent detector subelements is m blur diameters, and a center-to-center spacing of each of the two adjacent detector subelements is nOblur diameters. The value of n is equal to about 3m, and the value of m is equal to about nO/2. In another form, the detector is a two-dimensional detector array of detector subelements. The detector subelements are sized and staggered such that an area of the blur-circle image may not simultaneously be split equally among four detector subelements.
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O'Neill Mary Morabito
Pierce Gregory K.
Wellman William H.
Epps Georgia Y
Raytheon Company
Wyatt Kevin
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