Free space multiple laser diode module with fast axis collimator

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	Free space multiple laser diode module with fast axis collimator
其他题名	Free space multiple laser diode module with fast axis collimator
	DYKAAR, DOUGLAS R.
	2019-04-25
专利权人	NORTH INC.
公开日期	2019-04-25
授权国家	美国
专利类型	发明申请
摘要	Systems, devices, and methods for optical engines and laser projectors that are well-suited for use in wearable heads-up displays (WHUDs) are described. Generally, the optical engines of the present disclosure integrate a plurality of laser diodes (e.g., 3 laser diodes, 4 laser diodes) within a single, hermetically or partially hermetically sealed, encapsulated package. The optical engines include an optical director element that includes a curved reflective surface (e.g., parabolic cylinder) that redirects laser light beams and collimates the same along the fast axes thereof. Such optical engines may have various advantages over existing designs including, for example, smaller volumes, better manufacturability, faster modulation speed, etc. WHUDs that employ such optical engines and laser projectors are also described.
其他摘要	描述了非常适用于可佩戴抬头显示器（WHUD）的光学引擎和激光投影仪的系统，设备和方法。通常，本公开的光学引擎将多个激光二极管（例如，3个激光二极管，4个激光二极管）集成在单个气密或部分气密密封的封装封装内。光学引擎包括光学控制器元件，该光学控制器元件包括弯曲的反射表面（例如，抛物面圆柱体），其重定向激光束并沿着其快轴对其进行准直。这种光学引擎可以具有优于现有设计的各种优点，包括例如更小的体积，更好的可制造性，更快的调制速度等。还描述了采用这种光学引擎和激光投影仪的WHUD。
主权项	A wearable heads-up display (WHUD), comprising: a support structure that in use is worn on the head of a user;a laser projector carried by the support structure, the laser projector comprising: optical engine, comprising: a base substrate; a plurality of laser diodes bonded to the base substrate; at least one laser diode driver circuit, the at least one laser diode driver circuit operatively coupled to the plurality of laser diodes to selectively drive current to the plurality of laser diodes; a cap comprising at least one wall and at least one optical window that together define an interior volume sized and dimensioned to receive at least the plurality of laser diodes, the cap being bonded to the base substrate to provide a hermetic or partially hermetic seal between the interior volume of the cap and a volume exterior to the cap, and the optical window positioned and oriented to allow light emitted from the plurality of laser diodes to exit the interior volume; and an optical director element bonded to the base substrate proximate the plurality of laser diodes within the interior volume, the optical director element comprising a curved reflective surface positioned and oriented to reflect laser light from the plurality of laser diodes toward the optical window of the cap, and to collimate the laser light along the respective fast axes of the laser light from the plurality of laser diodes; and at least one scan mirror positioned to receive laser light from the plurality of laser diodes and controllably orientable to redirect the laser light over a range of angles.
申请日期	2018-10-25
专利号	US20190121138A1
专利状态	申请中
申请号	US16/171212
公开（公告）号	US20190121138A1
IPC 分类号	G02B27/01 \| H01S5/40 \| H01S5/042 \| H01S5/022 \| H01S5/42
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/57751
专题	半导体激光器专利数据库
作者单位	NORTH INC.
推荐引用方式 GB/T 7714	DYKAAR, DOUGLAS R.. Free space multiple laser diode module with fast axis collimator. US20190121138A1[P]. 2019-04-25.