Invention Grant
- Patent Title: Systems, devices, and methods for focusing laser projectors
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Application No.: US15837264Application Date: 2017-12-11
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Publication No.: US10365550B2Publication Date: 2019-07-30
- Inventor: Lloyd Frederick Holland , Vance R. Morrison
- Applicant: THALMIC LABS INC.
- Applicant Address: CA Kitchener, ON
- Assignee: North Inc.
- Current Assignee: North Inc.
- Current Assignee Address: CA Kitchener, ON
- Agent Thomas Mahon
- Main IPC: G03B21/20
- IPC: G03B21/20 ; G02B26/10 ; G02B27/01 ; G02B27/14 ; G02B27/30 ; G02C11/00 ; H01S5/00 ; H01S5/40 ; H01S5/02 ; G03B21/62 ; H01S5/022

Abstract:
Systems, devices, and methods for focusing laser projectors are described. A laser projector includes N≥1 laser diodes, each of which emits laser light having a divergence. Each laser diode is paired with a respective primary or collimation lens to at least reduce a divergence of the laser light that the laser diode produces. Downstream from the primary lens(es) in the optical path(s) of the laser light, a single dedicated secondary or convergence lens converges the laser light to a focus. By initiating the convergence of the laser light at the secondary or convergence lens as opposed to at the primary or collimation lens(es), numerous benefits that are particularly advantageous in laser projection-based wearable heads-up displays are realized.
Public/Granted literature
- US20180107103A1 SYSTEMS, DEVICES, AND METHODS FOR FOCUSING LASER PROJECTORS Public/Granted day:2018-04-19
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