Microsoft / ACTUATOR FRAME FOR SCANNING MIRROR
Referring here to HL2.
US Patent Application 20200124823
April 23, 2020
ACTUATOR FRAME FOR SCANNING MIRROR
Abstract Examples are disclosed that relate to actuator frames for scanning mirror systems. In one example an actuator frame for a scanning mirror assembly comprises a mounting member comprising a first side and an opposite second side. A first moveable member comprises a first interior side that defines a first gap and a second gap with the first side of the mounting member. A second moveable member comprises a second interior side that defines a third gap and a fourth gap with the second side of the mounting member. A first hinge connects a central portion of the mounting member with the first moveable member, and a second hinge connects the central portion of the mounting member with the second moveable member.
Inventors: WANG; Jincheng; (Sammamish, WA) ; DAVIS; Wyatt Owen; (Bothell, WA) ; NYSTROM; Michael James; (Mercer Island, WA) ; MILLER; Joshua Owen; (Woodinville, WA) ; JAMES; Richard Allen; (Woodinville, WA)
Applicant: Microsoft Technology Licensing, LLC Redmond WA US
Appl. No.: 16/164526 Filed: October 18, 2018
SUMMARY [0002] Examples are disclosed that relate to scanning display systems. As described in more detail below, one example provides an actuator frame for a scanning mirror assembly, with the frame comprising a mounting member having a first side and an opposite second side. A first moveable member comprises a first interior side that defines a first gap and a second gap with the first side of the mounting member. A second moveable member comprises a second interior side that defines a third gap and a fourth gap with the second side of the mounting member. A first hinge connects a central portion of the mounting member with a central portion of the first moveable member. A second hinge connecting the central portion of the mounting member with a central portion of the second moveable member.
From: DETAILED DESCRIPTION
[0017] In some scanning display systems, laser light is reflected by a mirror assembly at different angles to project reflected laser light throughout a field-of-view (FOV). To achieve a range of reflection angles, a suitable actuator such as a microelectromechanical system (MEMS) actuator may rotate the mirror assembly. Various types of scanning mirrors may be used, including but not limited to MEMS mirrors.
[0018] A MEMS actuator may rotate a mirror assembly about an axis in horizontal and vertical directions to produce viewable images in a FOV. In different examples, the mirror system may include a single mirror driven in both horizontal and vertical directions, or two mirrors separately driven in horizontal and vertical directions. Different scan rates may be employed in the horizontal and vertical directions. In a two mirror system, for example, a horizontally scanned mirror may be driven at a relatively fast rate (e.g., .about.27 kHz), whereas a vertically scanned mirror may be driven at a relatively slower rate (e.g., .about.60 Hz). The horizontal and vertical scan rates may at least partially determine the resolution of images generated at these rates, along with other factors such as mirror aperture (e.g., diameter) and scan angle.
Posted Apr 23, 2020, 10:49 PM UTC