Enhanced-light-collection-efficiency sensor

Details Enhanced-light-collection-efficiency sensor Enhanced-light-collection-efficiency sensor

1997-07-15

1999-05-11

Tran, Minh Loan

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

Responsive to non-electrical signal

Electromagnetic or particle radiation

257436, 257443, H01L31/0232

Patent

active

059030399

ABSTRACT:
A microlens and microlens array which collect light incident upon image sensor pixels. The microlens comprises two parts one which collects light from the cross-sectional area lying over the light-detection area and the second which collects light from the corner areas of the pixel lying outside the cross-sectional area of the light-detection area. Light from each of the two areas is refracted onto an associated light-detection area. Essentially all of the light incident upon the pixel can thus be collected and refracted to the photosensitive area.

REFERENCES:
patent: 4689291 (1987-08-01), Popovic et al.
patent: 4882262 (1989-11-01), Wilwerding
patent: 5298366 (1994-03-01), Iwasaki et al.
patent: 5453876 (1995-09-01), Hamada
patent: 5610390 (1997-03-01), Miyano

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