Interference No. 104,649
Page No. 6
B. Zhou's Specification
F12. Zhou's '858 patent specification is directed to a fingerprint sensing system. (Zhou '858,
cot. 1, lines 5-6 and lines 44-45). Generally, Zhou's fingerprint sensing system employs a sheet
prism with numerous prisinlets or very small prisms. The sheet prism is said to be very flat, with
the width of the sheet being more than ten times the maximum thickness of any one of the
prismiets. In contrast to prior art single prism systems, the overall thickness of the sheet prism
fingerprint sensing system is significantly reduced. (Zhou '858, cot. 1, lines 44-54). By
employing such a design, Zhou alleges that its fingerprint sensing system is smaller and cheaper
than other commercially available systems. (Zhou '858, cot. 8, lines 20-22).
F13. Zhou Figure 3 depicts an embodiment of the sheet prism invention and is reproduced
below:
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Last modified: November 3, 2007