Diffractive/refractive lenslet array
First Claim
Patent Images
1. A short focal length image sensor comprising:
- a photosensor array comprised of number of photosensors;
a lenslet array comprised of a number of abutting lenslets corresponding in number to the number of photosensors each lenslet having a decentration corresponding to its radial position in the lenslet array so that each lenslet views a different segment of a total field of view; and
a field limiting baffle comprised of at least one aperture plate which may be a lenslet aperture stop where the center of the apertures are each positioned to lie along the optical axis of a respective lenslet optical axis.
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Abstract
A short focal length image sensor is formed with an array of photosensor sites and a lenslet array. The lenslet array is comprised of a number of abutting lenslets corresponding in number to the number of photosensor sites. Each lenslet has its optical axis decentered as a function of its radial position in the lenslet array so that each lenslet views a different segment of a total field of view. A field limiting baffle, comprised of one or more separated aperture plates, is included with the center of the apertures in each aperture plate being positioned to lie along the optical axis of a respective lenslet.
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Citations
7 Claims
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1. A short focal length image sensor comprising:
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a photosensor array comprised of number of photosensors; a lenslet array comprised of a number of abutting lenslets corresponding in number to the number of photosensors each lenslet having a decentration corresponding to its radial position in the lenslet array so that each lenslet views a different segment of a total field of view; and a field limiting baffle comprised of at least one aperture plate which may be a lenslet aperture stop where the center of the apertures are each positioned to lie along the optical axis of a respective lenslet optical axis.
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2. A short focal length image sensor comprising:
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a color photosensor array comprised of number of sets of three photosensors; a lenslet array comprised of a number of abutting lenslets corresponding in number to the number of sets of three photosensors each lenslet having a decentration corresponding to its radial position in the lenslet array so that each lenslet views a different segment of a total field of view; and a field limiting baffle comprised of at least one aperture plate which may be a lenslet aperture stop where the center of the apertures are each positioned to lie along the optical axis of a respective lenslet optical axis. - View Dependent Claims (3, 4, 5, 6, 7)
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Specification