RADIATION SENSOR
First Claim
Patent Images
1. A radiation sensor comprising:
- first and second pixels;
a radiation absorption filter positioned over the first pixel but not the second pixel, wherein a combined spectral response of the radiation absorption filter and the first pixel has a first pixel pass-band and a first pixel stop-band; and
an interference filter positioned over both the first and second pixels, wherein the interference filter has a first interference filter pass-band substantially within the first pixel pass-band and a second interference filter pass-band substantially within the first pixel stop-band.
1 Assignment
0 Petitions
Accused Products
Abstract
A radiation sensor includes first and second pixels with a radiation absorption filter positioned over the first pixel and an interference filter positioned over both the first and second pixels. The combined spectral response of the absorption filter and the first pixel has a first pixel pass-band and a first pixel stop-band. The interference filter has a first interference filter pass-band substantially within the first pixel pass-band and a second interference filter pass-band substantially within the first pixel stop-band.
-
Citations
38 Claims
-
1. A radiation sensor comprising:
-
first and second pixels; a radiation absorption filter positioned over the first pixel but not the second pixel, wherein a combined spectral response of the radiation absorption filter and the first pixel has a first pixel pass-band and a first pixel stop-band; and an interference filter positioned over both the first and second pixels, wherein the interference filter has a first interference filter pass-band substantially within the first pixel pass-band and a second interference filter pass-band substantially within the first pixel stop-band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
-
-
31. A combined proximity and ambient light sensor comprising:
-
a radiation source; first and second pixels; a radiation absorption filter positioned over the first pixel but not the second pixel, wherein a combined spectral response of the radiation absorption filter and the first pixel has a first pixel pass-band and a first pixel stop-band; and an interference filter positioned over both the first and second pixels, wherein the interference filter has a first interference filter pass-band substantially within the first pixel pass-band and a second interference filter pass-band substantially within the first pixel stop-band. - View Dependent Claims (32, 33, 34, 35)
-
-
36. A method of detecting ambient radiation comprising:
-
a. filtering ambient radiation with a combination of a radiation absorption filter and an interference filter and detecting the filtered ambient radiation at a first pixel; b. filtering ambient radiation with the interference filter and detecting the filtered ambient radiation at the second pixel; c. reading a first signal from the first pixel; d. reading a second signal from the second pixel; and e. subtracting the first signal from the second signal. - View Dependent Claims (37, 38)
-
Specification