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US 7,053,998 B2Granted
Photo-detector filter
AssigneeSearete LLC
InventorsW. Daniel Hillis, Roderick A. Hyde, Nathan P. Myhrvold, Lowell L. Wood, Jr.
Life of this patent
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Abstract
Method and systems related to obstructing a first predefined portion of at least one defined wavelength of light incident upon a first photo-detector array; and detecting the at least one defined wavelength of light with a photo-detector in a second photo-detector array.
Claims21
A system comprising:
- a first photo-detector array configured to obstruct a first predefined portion of at least one defined wavelength of light impinging upon said first photo-detector array;
- a second photo-detector array sensitive to the at least one defined wavelength of light, said second photo-detector array positioned proximate to said first photo-detector array;
- and
- at least one photo-detector in said first photo-detector array constructed to provide a substantially neutral density filter.
1 more element
Dependencies are inferred from the claim text.