Imager having a plurality of cylindrical lenses

Details Imager having a plurality of cylindrical lenses Imager having a plurality of cylindrical lenses

1996-03-11

1998-03-31

Tran, Minh-Loan

Active solid-state devices (e.g., transistors, solid-state diode

Responsive to non-electrical signal

Electromagnetic or particle radiation

257435, 257436, 257443, 359619, 359620, H01L 310232

Patent

active

057341907

ABSTRACT:
The imager includes a semiconductor substrate having a top surface. A plurality of depressions is formed in the top surface of the substrate, and a plurality of spaced image pixels is formed in the substrate under the depressions. The imager further includes a plurality of first cylindrical substrate lenses having top surfaces. Each lens is formed in the depression corresponding to an underlying image pixel, with the top surface of each lens being optically coplanar with the top surface of the substrate. The imager further includes a plurality of second lenses overlying the first cylindrical lenses.

REFERENCES:
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patent: 4667092 (1987-05-01), Ishihara
patent: 4694185 (1987-09-01), Weiss
patent: 4966831 (1990-10-01), Mehra et al.
patent: 5293267 (1994-03-01), Nakai
patent: 5306926 (1994-04-01), Yonemoto
patent: 5321249 (1994-06-01), Nomura
patent: 5321297 (1994-06-01), Enomoto
patent: 5324930 (1994-06-01), Jech, Jr.
patent: 5371397 (1994-12-01), Maegawa et al.

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