Invention Grant
- Patent Title: Opto-mechanical system to remove zeroth order diffraction in phase-only spatial light modulator
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Application No.: US17578961Application Date: 2022-01-19
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Publication No.: US11809133B2Publication Date: 2023-11-07
- Inventor: Hongzhou Ma , Jeffery S. Brooker
- Applicant: Thorlabs, Inc.
- Applicant Address: US NJ Newton
- Assignee: Thorlabs, Inc.
- Current Assignee: Thorlabs, Inc.
- Current Assignee Address: US NJ Newton
- Agency: MYERS WOLIN, LLC
- Main IPC: G02B26/06
- IPC: G02B26/06 ; G03H1/22 ; G03H1/08

Abstract:
An optical image generation system including: a spatial light modulator (SLM) configured to receive an input collimated laser beam and modulate the wavefront of the laser beam; one or more optical elements configured to project the modulated laser beam onto a focal plane; a first mirror and a second mirror situated at the focal plane, an edge of the first mirror being adjacent to an edge of the second mirror, the first mirror reflects a first portion of the modulated laser beam in a first direction, the second mirror reflects a second portion of the modulated laser beam in a second direction; and an objective lens projects the first and second portions into a combined image; wherein the zeroth order diffraction is block or suppressed at the center of the focal plane.
Public/Granted literature
- US20220229398A1 OPTO-MECHANICAL SYSTEM TO REMOVE ZEROTH ORDER DIFFRACTION IN PHASE-ONLY SPATIAL LIGHT MODULATOR Public/Granted day:2022-07-21
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