Color imaging system and a method in a color imaging system
First Claim
1. A color imaging system comprising at least one electronic color image sensor and an imaging lens system forming an optical image on said image sensor, said image sensor having substantially different spatial sampling frequencies for at least two different colors, wherein the imaging system further comprises a color specific aperture stop defining substantially different aperture sizes for said at least two different colors.
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Abstract
The invention refers to a color imaging system (20) comprising at least one electronic color image sensor (11) and an imaging lens system (13) forming an optical image on the image sensor, the image sensor having substantially different spatial sampling frequencies for at least two different colors. According to the invention, the imaging system (20) comprises a color specific aperture stop (30) defining substantially different aperture sizes for the at least two different colors. The invention also refers to a method in a color imaging system. The invention leads to improved image quality and better sensitivity in an electronic imaging devices without requiring the use of complex and/or expensive optical components. It allows economical maximizing of the performance of the existing lens system and image sensor components especially in simple and compact digital imaging devices.
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Citations
22 Claims
- 1. A color imaging system comprising at least one electronic color image sensor and an imaging lens system forming an optical image on said image sensor, said image sensor having substantially different spatial sampling frequencies for at least two different colors, wherein the imaging system further comprises a color specific aperture stop defining substantially different aperture sizes for said at least two different colors.
- 17. A method in a color imaging system where an imaging lens system forms an optical image on at least one electronic color image sensor, said image sensor having substantially different spatial sampling frequencies for at least two different colors, wherein substantially different aperture stop sizes are defined for said at least two different colors using a color specific aperture stop.
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