Invention Grant
- Patent Title: LED pattern projector for 3D camera platforms
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Application No.: US16403313Application Date: 2019-05-03
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Publication No.: US10656511B2Publication Date: 2020-05-19
- Inventor: Anders Grunnet-Jepsen , John Sweetser , Akihiro Takagi , Paul Winer , John Woodfill
- Applicant: Intel Corporation
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Green, Howard & Mughal LLP
- Main IPC: G03B21/20
- IPC: G03B21/20 ; H04N5/74 ; G03B21/00 ; G02B27/09 ; G06T7/521 ; H04N9/31 ; G03B17/54 ; G01B11/25 ; G03B35/00

Abstract:
A light pattern projector with a pattern mask to spatially modulate an intensity of a wideband illumination source, such as an LED, and a projector lens to reimage the spatially modulated emission onto regions of a scene that is to be captured with an image sensor. The projector lens may comprise a microlens array (MLA) including a first lenslet to reimage the spatially modulated emission onto a first portion of a scene, and a second lenslet to reimage the spatially modulated emission onto a first portion of a scene. The MLA may have a fly's eye architecture with convex curvature over a diameter of the projector lens in addition to the lenslet curvature. The pattern mask may be an amplitude mask comprising a mask pattern of high and low amplitude transmittance regions. In the alternative, the pattern mask may be a phase mask, such as a refractive or diffractive mask.
Public/Granted literature
- US20200004126A1 LED PATTERN PROJECTOR FOR 3D CAMERA PLATFORMS Public/Granted day:2020-01-02
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