Invention Grant
- Patent Title: Systems, devices, and methods for beam combining in laser projectors
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Application No.: US15852205Application Date: 2017-12-22
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Publication No.: US10437073B2Publication Date: 2019-10-08
- Inventor: Lloyd Frederick Holland , Joshua Moore
- Applicant: North Inc.
- Applicant Address: CA Kitchener, ON
- Assignee: North Inc.
- Current Assignee: North Inc.
- Current Assignee Address: CA Kitchener, ON
- Agent Thomas Mahon
- Main IPC: G02B27/14
- IPC: G02B27/14 ; G02B27/10 ; G02B27/01 ; H04N9/31

Abstract:
Systems, devices, and methods for beam combining within laser projectors are described. A laser projector includes first, second, and third laser diodes to generate red, green, and blue laser light respectively, a controllable scan mirror, and a heterogeneous beam splitter system. The red, green, and blue laser light have distinct maximum powers. The heterogeneous beam splitter system splits at least one of the red, green, and blue laser light and combines respective first portions of all three into an aggregate beam. Second portions of laser light are excluded from the aggregate beam. At the maximum power of each laser light the aggregate beam is white as defined by a target white point. The heterogeneous beam splitter system directs the aggregate beam towards the controllable scan mirror which scans the beam onto a projection surface. Decreasing the power of the laser light post-generation provides a larger range of aggregate beam colors.
Public/Granted literature
- US20180210216A1 SYSTEMS, DEVICES, AND METHODS FOR BEAM COMBINING IN LASER PROJECTORS Public/Granted day:2018-07-26
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