Invention Grant
- Patent Title: Method for reducing speckle effect
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Application No.: US16042186Application Date: 2018-07-23
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Publication No.: US10440336B2Publication Date: 2019-10-08
- Inventor: Christophe Le Gros , Nicolas Abele
- 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: H04N9/31
- IPC: H04N9/31 ; G03B21/20 ; G03B21/28 ; G02B27/48 ; G02B26/08 ; G02B27/14 ; G02B26/10

Abstract:
According to the present invention there is provided a method of reducing speckle in a primary light spot which is projected onto a surface by a projection device which comprises a laser, wherein a primary light spot is defined by two or more secondary light spots, the method comprising the steps of (a) consecutively providing the laser with “n” different input currents so that the laser consecutively outputs “n” different light beams, wherein each one of the “n” different light beams defines a secondary light spot on the surface, wherein “n” is an integer value greater than one; and (b) superposing the secondary light spots. There is further provided a corresponding method of projecting a pixel.
Public/Granted literature
- US20180332259A1 METHOD FOR REDUCING SPECKLE EFFECT Public/Granted day:2018-11-15
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