公开(公告)号：WO2018057080A1

公开(公告)日：2018-03-29

申请号：PCT/US2017/039165

申请日：2017-06-25

Applicant: APPLE INC.

Inventor： SHPUNT, Alexander ,  GILBOA, Niv ,  UPTON, Robert

IPC: G01S17/89 ,  G01S7/481 ,  G02B26/10

Abstract: Optical scanning apparatus (20) includes a triangular prism (40), having first and second side faces (46, 48) and a base (45). A transmitter (36) directs a beam of optical radiation into the prism through the first side face, which refracts the beam so that the optical radiation is incident on and reflects from the base within the prism at a reflection angle that is greater than a total internal reflection (TIR) angle of the prism and exits the prism through the second side face. At least one scanning mirror (24, 26) is positioned to intercept and reflect the beam back into the prism while scanning the beam over an angular range selected such that after refraction of the scanned beam at the second side face, the scanned beam is incident on the base at a transmission angle that is less than the TIR angle and is transmitted out of the prism through the base.

Abstract translation: 光学扫描设备（20）包括具有第一和第二侧面（46,48）和基部（45）的三棱柱（40）。 发射器（36）通过第一侧面将光辐射束引导到棱镜中，该第一侧面折射光束，使得光辐射以大于第一侧面的反射角入射到棱镜内的基座并且从棱镜内的基座反射 棱镜的内部反射（TIR）角度并通过第二侧面离开棱镜。 定位至少一个扫描镜（24,26），以拦截并反射光束回到棱镜中，同时在选定的角度范围上扫描光束，使得扫描光束在第二侧面折射后，扫描光束入射 以小于TIR角的传输角度在底座上，并通过底座传输出棱镜。