增强现实设备及其中所采用的光学系统技术方案

本公开涉及增强现实设备的光学系统，包括：图像投射光源；以及偏振分光镜，所述偏振分光镜具有靠近所述图像投射光源的分光面以及背离所述图像投射光源的透射面，所述偏振分光镜布置成所述图像投射光源发出的像源光能够非垂直地入射所述分光面并被至少部分地反射，所述偏振分光镜被配置成光入射到所述分光面后，偏振态为第一方向的偏振光分量经过所述偏振分光镜从所述透射面透射并且偏振态为与所述第一方向垂直的第二方向的偏振光分量从所述分光面反射，其中，所述光学系统还包括在所述图像投射光源与所述偏振分光镜的分光面之间设置的偏光片，所述偏光片配置成能够透过偏振态为第二方向的偏振光且吸收偏振态为第一方向的偏振光。

Augmented reality equipment and its optical system

The present disclosure relates to an optical system of an augmented reality device, including: an image projection light source; and a polarizing beam splitter, the polarizing beam splitter having a beam splitting surface close to the image projection light source and a transmission surface away from the image projection light source, the polarizing beam splitter arranged so that the image source light emitted by the image projection light source can enter the beam splitting surface perpendicularly and be at least Partially reflecting. After the polarizing beam splitter is configured to incident light on the beam splitter, the polarized light component with the first polarization state is transmitted from the transmission plane through the polarizing beam splitter and the polarized light component with the second polarization state perpendicular to the first direction is reflected from the beam splitter. The optical system also includes the image projection light source and the image projection light source A polarizing sheet is arranged between the splitting surfaces of the polarizing beam splitter, and the polarizing sheet is configured to be able to penetrate the polarized light with the polarization state of the second direction and absorb the polarized light with the polarization state of the first direction.

【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请，说明书已公开。

【技术保护点】
PCT国内申请，权利要求书已公开。/n

【技术特征摘要】
【国外来华专利技术】20180212...

【专利技术属性】
技术研发人员：肖冰，梁晓斌，徐驰，
申请(专利权)人：优奈柯恩北京科技有限公司，
类型：发明
国别省市：北京;11