Yutou Technology (hangzhou) Co., Ltd.

Liang Guan

Kun Li

Da Wei

Yi Rao

Jingtao Zhu

Adrian Lake

Lin Cheng

Aspects for active alignment for assembling optical imaging systems are described herein. As an example, the aspects may include aligning an optical detector with an optical component. The optical component is configured to alter a direction of one or more light beams emitted from an image displayed by an optical engine. The aspects may further include detecting, by the optical detector, a virtual image generated by the one or more light beams emitted by the optical engine; and adjusting, by a multi-axis controller, an optical path of the one or more light beams based on one or more parameters of the virtual image collected by the optical detector.

Active alignment for assembling optical devices

An imaging display system in the field of augmented reality technology comprises a waveguide structure () disposed on an outer surface of an exit surface () of a polarization beam splitter () of an optical engine module (A). The waveguide structure is tubular. One end () of the waveguide structure is connected to the exit surface and together with the exit surface forms a preset angle (&#x3b1;). The other end of the waveguide structure is a free end. The imaging display system expands an eye motion box (EMB) by means of the waveguide structure. The preset angle formed between the waveguide structure and the exit surface causes light () incident on the waveguide structure to undergo total internal reflection inside the waveguide structure. The waveguide structure further comprises a plurality of semi-transmissive and semi-reflective lenses () disposed obliquely in order inside the waveguide structure, and the light incident into the waveguide structure is reflected on the surface of each of the lenses such that the light is uniformly released into viewer's eyes. The imaging display system can realize more compact applications in AR optical systems and provide a larger field of view (FOV) and eye motion box for users.

Imaging display system

Aspects for a wearable augmented reality (AR) device are described herein. The aspects may include a light engine that includes a micro-display configured to emit light to form an image, a polarized beam splitter positioned horizontally adjacent to the micro-display and configured to receive the emitted light that passes through the polarized beam splitter, and one or more first imaging lenses positioned horizontally adjacent to the polarized beam splitter and configured to receive the diverged light. One of the first imaging lenses may include a reflection surface configured to reflect and converge the light. The polarized beam splitter may include a reflective coating configured to reflect the converged light. The aspects may further include an optical waveguide configured to guide the converged light to a predetermined position.

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San Carlos, CA, United States of America

Liang Guan