Beam tracking and image steering by Texas Instruments phase light modulator based on camera input for lidar and AR applications

Xianyue Deng; Chin-I Tang; Yuzuru Takashima

doi:10.1117/12.2651414

15 March 2023 Beam tracking and image steering by Texas Instruments phase light modulator based on camera input for lidar and AR applications

Xianyue Deng, Chin-I Tang, Yuzuru Takashima

Author Affiliations +

Proceedings Volume 12435, Emerging Digital Micromirror Device Based Systems and Applications XV; 124350E (2023) https://doi.org/10.1117/12.2651414
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Micro Electro Mechanical System (MEMS) spatial light modulators enables adaptive and fast beam and image steering. For lidar applications, Texas Instruments Phase Light Modulator (TI-PLM) is paired with real-time calculation and display of Computer Generated Holograms (CGH) by CUDA-OpenGL interoperability assisted by YOLOv4-tiny network model for object detection and recognition. The real-time object recognition, CGH calculation, and display framework replaces conventional raster scanning with camera-input based and foveated beam steering while having a beam scan rate beyond the frame rate of TI-PLM. For Augmented Reality (AR) application, the same framework is used for image steering based on gaze information of eye. With Texas Instruments Digital Micromirror Device (TI-DMD), image is steered into a part of field of view by following movement of eye. The diffractive image steering enabled by TI-DMD increases FOV while not sacrificing resolution of the image displayed.

Conference Presentation

Citation Download Citation

Xianyue Deng, Chin-I Tang, and Yuzuru Takashima "Beam tracking and image steering by Texas Instruments phase light modulator based on camera input for lidar and AR applications", Proc. SPIE 12435, Emerging Digital Micromirror Device Based Systems and Applications XV, 124350E (15 March 2023); https://doi.org/10.1117/12.2651414

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