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公开(公告)号：US10718951B2
公开(公告)日：2020-07-21
申请号：US15852188
申请日：2017-12-22
Applicant: THALMIC LABS INC.
Inventor： Lloyd Frederick Holland , Joshua Moore
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.
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公开(公告)号：US10365550B2
公开(公告)日：2019-07-30
申请号：US15837264
申请日：2017-12-11
Applicant: THALMIC LABS INC.
Inventor： Lloyd Frederick Holland , Vance R. Morrison
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.
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公开(公告)号：US10365549B2
公开(公告)日：2019-07-30
申请号：US15837259
申请日：2017-12-11
Applicant: THALMIC LABS INC.
Inventor： Lloyd Frederick Holland , Vance R. Morrison
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.
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公开(公告)号：US10078220B2
公开(公告)日：2018-09-18
申请号：US15167472
申请日：2016-05-27
Applicant: THALMIC LABS INC.
Inventor： Stefan Alexander , Jake Chapeskie , Lloyd Frederick Holland , Thomas Mahon
CPC classification number: G02B27/0172 , G02B5/32 , G02B26/0833 , G02B27/0093 , G02B27/0103 , G02B27/017 , G02B27/0176 , G02B2027/0107 , G02B2027/0109 , G02B2027/015 , G02B2027/0174 , G02B2027/0178 , G06F3/013 , H04N9/3129 , H04N9/3161
Abstract: Systems, devices, and methods that integrate eye tracking capability into scanning laser projector (“SLP”)-based wearable heads-up displays are described. At least one narrow waveband laser diode is used in an SLP to define one or more portion(s) of a visible image. At least one corresponding narrow waveband photodetector is aligned to detect reflections of the portion(s) of the image from features of the eye. A holographic optical element (“HOE”) may be used to combine the image and environmental light into the user's “field of view.” Three narrow waveband photodetectors each responsive to a respective one of three narrow wavebands output by the RGB laser diodes of an RGB SLP are aligned to detect reflections of a projected RGB image from features of the eye.
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公开(公告)号：US10031338B2
公开(公告)日：2018-07-24
申请号：US15046234
申请日：2016-02-17
Applicant: THALMIC LABS INC.
Inventor： Stefan Alexander , Matthew Bailey , Vance R. Morrison , Lloyd Frederick Holland
CPC classification number: G02B27/0172 , G02B26/10 , G02B27/0081 , G02B27/017 , G02B27/12 , G02B2027/0112 , G02B2027/0123 , G02B2027/0125 , G02B2027/0174 , G02B2027/0178 , G03H1/2645 , G03H1/265 , G03H2001/266 , G06F1/163 , G06F3/011 , G06F3/013 , G09G3/001
Abstract: Systems, devices, and methods for eyebox expansion by exit pupil replication in scanning laser-based wearable heads-up displays (“WHUDs”) are described. The WHUDs described herein each include a scanning laser projector (“SLP”), a holographic combiner, and an optical replicator positioned in the optical path therebetween. For each light signal generated by the SLP, the optical replicator receives the light signal and redirects each one of N>1 instances of the light signal towards the holographic combiner effectively from a respective one of N spatially-separated virtual positions for the SLP. The holographic combiner converges each one of the N instances of the light signal to a respective one of N spatially-separated exit pupils at the eye of the user. In this way, multiple instances of the exit pupil are distributed over the area of the eye and the eyebox of the WHUD is expanded.
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Patent Agency Ranking
公开(公告)号：US20180180885A1
公开(公告)日：2018-06-28
申请号：US15848265
申请日：2017-12-20
Applicant: THALMIC LABS INC.
Inventor： Lloyd Frederick Holland , Joshua Moore
CPC classification number: G02B27/0172 , G02B26/0816 , G02B26/101 , G02B27/108 , G02B27/141 , G02B2027/0114 , G02B2027/014 , G02B2027/0178 , G03B21/2013 , G03B21/2033 , G03B33/12 , H04N9/3129 , H04N9/3161 , H04N9/3164
Abstract: Systems, devices, and methods for beam combining are described. A monolithic beam combiner includes a solid volume of optically transparent material having a planar input surface, an output surface, a planar reflector physically coupled to the solid volume, and at least a first planar dichroic reflector within the solid volume. Multiple light sources input light into the solid volume through the planar input surface such that each light beam from a respective source is initially incident on one of the planar reflector and the at least a first planar dichroic reflector. The light is reflected by and transmitted through the reflectors and an aggregate beam is created. Because the reflectors are within an optically transparent material the beam combiner can be made more compact than a conventional beam combiner. This monolithic beam combiner is particularly well suited for use laser projectors and in wearable heads-up displays that employ laser projectors.
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公开(公告)号：US20180129055A1
公开(公告)日：2018-05-10
申请号：US15809632
申请日：2017-11-10
Applicant: THALMIC LABS INC.
Inventor： Vance R. Morrison , Lloyd Frederick Holland , Ian Andrews , Andrew S. Logan
CPC classification number: G02B27/0911 , G02B5/32 , G02B26/0816 , G02B26/101 , G02B27/0172 , G02B27/0179 , G02B27/104 , G02B2027/011 , G02B2027/0112 , G02B2027/013 , G02B2027/0138 , G02B2027/0174 , G02B2027/0178 , G02B2027/0185 , H04N9/3135
Abstract: Systems, devices, and methods for field shaping in wearable heads-up displays (WHUD) with laser projectors are described. A WHUD includes a support structure carrying a laser projector, a field shaper optic, and a transparent combiner to combine the projected laser light and environmental light. The laser projector generates a laser light having a field. The laser light is scanned through the field shaper optic and over the transparent combiner. The field shaper optic heterogeneously varies the focal length of the laser light depending on the laser light properties to alter the field of the laser light to approximately match a shape of the transparent combiner. The transparent combiner redirects the laser light to a field of view of a user to create a focused image at an eye of the user.
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公开(公告)号：US10180578B2
公开(公告)日：2019-01-15
申请号：US15807856
申请日：2017-11-09
Applicant: Thalmic Labs Inc.
Inventor： Stefan Alexander , Jake Chapeskie , Lloyd Frederick Holland , Thomas Mahon
Abstract: Systems, devices, and methods that integrate eye tracking capability into scanning laser projector (“SLP”)-based wearable heads-up displays are described. At least one narrow waveband laser diode is used in an SLP to define one or more portion(s) of a visible image. At least one corresponding narrow waveband photodetector is aligned to detect reflections of the portion(s) of the image from features of the eye. A holographic optical element (“HOE”) may be used to combine the image and environmental light into the user's “field of view.” Three narrow waveband photodetectors each responsive to a respective one of three narrow wavebands output by the RGB laser diodes of an RGB SLP are aligned to detect reflections of a projected RGB image from features of the eye.
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公开(公告)号：US10114222B2
公开(公告)日：2018-10-30
申请号：US15807746
申请日：2017-11-09
Applicant: Thalmic Labs Inc.
Inventor： Stefan Alexander , Jake Chapeskie , Lloyd Frederick Holland , Thomas Mahon
Abstract: Systems, devices, and methods that integrate eye tracking capability into scanning laser projector (“SLP”)-based wearable heads-up displays are described. An infrared laser diode is added to an RGB SLP and an infrared photodetector is aligned to detect reflections of the infrared light from features of the eye. A holographic optical element (“HOE”) may be used to combine visible light, infrared light, and environmental light into the user's “field of view.” The HOE may be heterogeneous and multiplexed to apply positive optical power to the visible light and zero or negative optical power to the infrared light.
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公开(公告)号：US20180180886A1
公开(公告)日：2018-06-28
申请号：US15848388
申请日：2017-12-20
Applicant: THALMIC LABS INC.
Inventor： Lloyd Frederick Holland , Joshua Moore
CPC classification number: G02B27/0172 , G02B26/0816 , G02B26/101 , G02B27/108 , G02B27/141 , G02B2027/0114 , G02B2027/014 , G02B2027/0178 , G03B21/2013 , G03B21/2033 , G03B33/12 , H04N9/3129 , H04N9/3161 , H04N9/3164
Abstract: Systems, devices, and methods for beam combining are described. A monolithic beam combiner includes a solid volume of optically transparent material having two orthogonally positioned planar input surfaces, an output surface, and at least two planar dichroic reflectors positioned within the solid volume. Multiple light sources input light into the solid volume through the two planar input surfaces such that each light beam from a respective source is initially incident on one of the planar dichroic reflectors. The light is reflected by and transmitted through the reflectors and an aggregate beam is created. Because the reflectors are within an optically transparent material the beam combiner can be made more compact than a conventional beam combiner. This monolithic beam combiner is particularly well suited for use laser projectors and in wearable heads-up displays that employ laser projectors.
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