Systems, devices, and methods for beam combining in laser projectors

    公开(公告)号:US10718951B2

    公开(公告)日:2020-07-21

    申请号:US15852188

    申请日:2017-12-22

    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.

    SYSTEMS, DEVICES, AND METHODS FOR BEAM COMBINING IN LASER PROJECTORS

    公开(公告)号:US20180210215A1

    公开(公告)日:2018-07-26

    申请号:US15852188

    申请日:2017-12-22

    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.

    SYSTEMS, DEVICES, AND METHODS FOR EYEBOX EXPANSION IN WEARABLE HEADS-UP DISPLAYS
    6.
    发明申请
    SYSTEMS, DEVICES, AND METHODS FOR EYEBOX EXPANSION IN WEARABLE HEADS-UP DISPLAYS 有权
    用于耳机扩展的系统,设备和方法

    公开(公告)号:US20160377866A1

    公开(公告)日:2016-12-29

    申请号:US15046254

    申请日:2016-02-17

    Abstract: Systems, devices, and methods for eyebox expansion by exit pupil replication in wearable heads-up displays (“WHUDs”) are described. A WHUD includes a scanning laser projector (“SLP”), a holographic combiner, and an optical splitter positioned in the optical path therebetween. The optical splitter receives light signals generated by the SLP and separates the light signals into N sub-ranges based on the point of incidence of each light signal at the optical splitter. The optical splitter redirects the light signals corresponding to respective ones of the N sub-ranges towards the holographic combiner effectively from respective ones of N spatially-separated virtual positions for the SLP. The holographic combiner converges the light signals to respective ones 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.

    Abstract translation: 描述了可穿戴式平视显示器(“WHUD”)中出口瞳孔复制的眼框扩展的系统,设备和方法。 本发明包括扫描激光投影仪(“SLP”),全息组合器和位于它们之间的光路中的光分路器。 光分路器接收由SLP产生的光信号,并基于光分路器处的每个光信号的入射点将光信号分离成N个子范围。 光分路器将对应于N个子范围中的相应N个子范围的光信号有效地从用于SLP的N个空间上分离的虚拟位置中的相应的一个朝向全息组合器重定向。 全息组合器将光信号收敛在用户眼睛处的N个空间分离的出射光瞳中的相应的一个。 以这种方式,出射光瞳的多个实例分布在眼睛的区域上,并且扩大了WHUD的眼框。

    SYSTEMS, DEVICES, AND METHODS FOR REDUCING BULK AND BALANCING WEIGHT IN WEARABLE HEADS-UP DISPLAYS

    公开(公告)号:US20190011699A1

    公开(公告)日:2019-01-10

    申请号:US16130829

    申请日:2018-09-13

    Abstract: Systems, devices, and methods for reducing bulk and balancing weight in wearable heads-up displays are described. Bulk can be reduced in a wearable heads-up display by positioning a battery in a first arm of the wearable heads-up display and other electronics in a second arm of the wearable heads-up display, thus reducing the amount of extraneous housing that would otherwise be required to house multiple batteries or electronic components in both arms. Weight of a wearable heads-up display can be balanced by selecting appropriately sized and weight electronics in the first arm, and by adjusting size and therefore weight of the battery in the second arm. Densely filling the first arm with electronics can result in the first arm and the second arm having similar weight.

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