Image sensor with improved uniformity of effective incident...

Details Image sensor with improved uniformity of effective incident... Image sensor with improved uniformity of effective incident...

2006-10-24

2006-10-24

Epps, Georgia (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C348S273000, C257S432000, C359S618000

Reexamination Certificate

active

07126099

ABSTRACT:
An image sensor improving the uniformity of effective incident light. In one example, the size of microlenses disposed in different regions of the image sensor is changed to balance the brightness in different regions, in which the size of each microlens is a function of the distance between the microlens to the chip center In another example, the distance between the center of the microlens and the center of the corresponding sensing area is changed to balance the brightness in different regions and the corresponding color filters are shifted such that the microlens is overlying a corresponding color filter unit without overlying adjacent regions thereof, in which the distance between the center of the microlens and the center of the corresponding sensing area is a function of the distance between the corresponding sensing area to the chip center.

REFERENCES:
patent: 6255640 (2001-07-01), Endo et al.
patent: 6638786 (2003-10-01), Yamamoto
patent: 6867920 (2005-03-01), Marom
patent: 2002/0140832 (2002-10-01), Summa

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