Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1997-04-30
2000-03-28
Le, Que T.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
2502141, 257 82, H01J 314
Patent
active
060434813
ABSTRACT:
An optoelectronic device and method for making same in which the device demonstrates efficient fill factor and focuses light upon an optoelectronic element close to the focal point of the light focusing element. The device comprises a substrate supporting an optoelectronic element, a microlens array, and a light transmissive layer intermediate between the substrate and the microlens array. The intermediate layer is of a thickness so that the spot size formed by the light collected by the microlens is substantially smaller than the photosensitive or photosensitive area at the plane of the optoelectronic element. In alternate embodiments, the transmissive layer assists in achieving maximum fill factor. The method taught provides minimum alignment steps thereby providing a method of improved manufacturability.
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Kaneshiro Ronald
Tan Tun Sein
Hewlett--Packard Company
Le Que T.
Neville Deborah A.
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