Solid-state imaging device using light-transmitting film as...

Television – Camera – system and detail – Optics

Reexamination Certificate

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C348S335000, C348S345000

Reexamination Certificate

active

07728901

ABSTRACT:
The present invention provides a solid-state imaging device which compensates a field curvature which occurs due to an aberration of the optical imaging system and surely receive light incident with a wide angle. Each pixel (pixel size of 2.2 μm square) in a solid-state imaging device includes a light-transmitting film with the first effective refractive index distribution and a light-transmitting film with the second effective refractive index distribution, a light-receiving element, a wiring, a wavelength selection filter, and a Si substrate. A pixel (1) is a pixel placed an approximate center of the solid-state imaging device. A pixel (n) is a pixel placed in the periphery of the solid-state imaging device, and a pixel (n-x) is a pixel that are placed between the pixel (1) and the pixel (n). The light-transmitting film of each pixel has approximately same effective refractive index distribution. Θ0which is a main light angle on the light-receiving element side, is approximately same. A main light angle in the optical imaging system is represented as Θ1, Θn-x, and Θn. The light-transmitting film varies for each pixel so that a condition Θ0/Θ1>Θ0/Θn-x<Θ0/Θn.

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English language abstract JP 9-260624.
English language abstract JP 2003-188366.
U.S. Appl. No. 11/571,461 to Kasuga et al., filed Dec. 29, 2006.
U.S. Appl. No. 11/617,173 to Kuriyama, filed Dec. 28, 2006.
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