Imaging device which adjusts the ratio of color excitation value

Details Imaging device which adjusts the ratio of color excitation value Imaging device which adjusts the ratio of color excitation value

1995-08-15

1997-02-11

Mintel, William

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

Responsive to non-electrical signal

Electromagnetic or particle radiation

257440, 257448, 348223, 348224, 348277, 358906, 3589091, H01L 3100

Patent

active

056024126

ABSTRACT:
An imaging device which includes an optical unit passing light from a subject and having an exit pupil position. An image pickup element receives the light from the subject passing through the optical unit, and produces an image signal from the received light. The image signal has corresponding color excitation values. A color compensation mechanism adjusts a ratio of the color excitation values of the image signal produced by the image pickup element by adjusting at least one of the color excitation values in correspondence with the exit pupil position of the optical unit. Further, the imaging device can include an aperture positioned between the optical unit and the image pickup element to limit the amount of light received by the image pickup element from the optical unit. The size of the aperture is adjustable. The color compensation mechanism can then adjust a ratio of the color excitation values of the image signal produced by the image pickup element by adjusting at least one of the color excitation values in correspondence with the size of the aperture.

REFERENCES:
patent: 4084179 (1978-04-01), Sekiguchi
patent: 4843456 (1989-06-01), Iida et al.
patent: 4885635 (1989-12-01), Kimura et al.
patent: 5198890 (1993-03-01), Suga
patent: 5218452 (1993-06-01), Kondo et al.
patent: 5479206 (1995-12-01), Ueno et al.

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