Dichroic aperture for electronic imaging device
First Claim
1. A filter for a camera, comprising:
- a first aperture having a first light-transmissive property; and
a second aperture adjacent the first aperture, the second aperture having a second light-transmissive property;
whereinthe first and second light-transmissive properties are different; and
the first and second apertures are unitarily formed as a single lens.
1 Assignment
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Accused Products
Abstract
A dichroic filter that for use with an electronic imaging device, such as a camera. The dichroic filter is located in the main imaging lens, and may permit all light to pass through a first portion and be measured by a photosensor, while restricting at least some portions of visible light from passing through a second portion thereof. In this manner, only the non-restricted portions of visible light passing through the second portion may be measured by the associated pixels of the photosensor. The filter may be formed from a first aperture permitting a first set of wavelengths to pass therethrough and a second aperture adjacent the first aperture, the second aperture permitting only a subset of the first set of wavelengths to pass therethrough. The second aperture may be a dichroic mirror or it may be an optical filter of some other type.
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Citations
13 Claims
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1. A filter for a camera, comprising:
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a first aperture having a first light-transmissive property; and a second aperture adjacent the first aperture, the second aperture having a second light-transmissive property;
whereinthe first and second light-transmissive properties are different; and the first and second apertures are unitarily formed as a single lens. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electronic imaging device, comprising:
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a filter; a photosensor operatively connected to the filter; and a processor operatively connected to the photosensor;
whereinthe filter defines at least a first and second region; the first region permits light of a first wavelength set to be detected by a first portion of the photosensor; the second region permits light of a second wavelength set to be detected by a second portion of the photosensor;
whereinthe at least first and second regions are unitarily formed as a single lens; and a signal level of a first signal corresponding to the light detected by the first region is less than a signal level of a second signal corresponding to the light detected by the second region. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification