Invention Grant
- Patent Title: Phase gratings with odd symmetry for high-resolution lensless optical sensing
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Application No.: US17245320Application Date: 2021-04-30
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Publication No.: US11372147B2Publication Date: 2022-06-28
- Inventor: Patrick R. Gill , David G. Stork
- Applicant: Rambus Inc.
- Applicant Address: US CA San Jose
- Assignee: Rambus Inc.
- Current Assignee: Rambus Inc.
- Current Assignee Address: US CA San Jose
- Agency: Silicon Edge Law Group LLP
- Agent Arthur J. Behiel
- Main IPC: G02B5/30
- IPC: G02B5/30 ; G02B5/18 ; G02B27/46 ; H04N5/335 ; H01L27/146 ; G02B27/42 ; H04N5/232

Abstract:
Image-sensing devices include odd-symmetry gratings that cast interference patterns over a photodetector array. Grating features offer considerable insensitivity to the wavelength of incident light, and to the manufactured distance between the grating and the photodetector array. Photographs and other image information can be extracted from interference patterns captured by the photodetector array. Images can be captured without a lens, and cameras can be made smaller than those that are reliant on lenses and ray-optical focusing.
Public/Granted literature
- US20210349250A1 PHASE GRATINGS WITH ODD SYMMETRY FOR HIGH-RESOLUTION LENSLESS OPTICAL SENSING Public/Granted day:2021-11-11
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