Lens system for photodetectors
First Claim
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1. A method comprising:
- forming a plurality of stacked layers of sol-gel material;
forming a stepped configuration in said stacked layers by progressively removing portions of a plurality of said layers; and
forming a diffractive lens from said sol-gel layers and positioning said lens over a photodetector.
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Abstract
An photosensitive device may be formed with a diffractive lens which offsets chromatic aberrations and dispersion caused by a refractive capture lens. The diffractive lens may be formed of a sol-gel material having a photoinitiator, or other materials including those that may be defined with low temperature techniques commonly used in connection with photoresist.
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Citations
3 Claims
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1. A method comprising:
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forming a plurality of stacked layers of sol-gel material;
forming a stepped configuration in said stacked layers by progressively removing portions of a plurality of said layers; and
forming a diffractive lens from said sol-gel layers and positioning said lens over a photodetector. - View Dependent Claims (2, 3)
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Specification
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Current AssigneeIntel Corporation
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Original AssigneeIntel Corporation
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InventorsRaj, Kannan, Sundahl, Robert C., Assadi, Azar
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Primary Examiner(s)Evans, F. L.
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Application NumberUS09/626,898Time in Patent Office215 DaysField of Search250/208.1, 250/214.RUS Class Current250/214.00RCPC Class CodesH01L 31/02162 for filtering or shielding ...H01L 31/02325 the optical elements not be...
