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Poster + Paper
27 March 2021 Pulsed illumination driver with intensity control and RGB mixing capabilities for high-resolution near to eye display
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Abstract
The recently reported “Angular Spatial Light Modulator” (ASLM) light engine, using pulsed illumination synchronized to a Digital Micromirror Device (DMD), shows significant promise to enhance pixel counts of Near-to-Eye Displays (NED) without increasing package volume, but requires an uncommon illumination driver. We present a field effect transistor based constant-current driver that is fast, compact, and scalable to RGB illumination. The digital-to-analog convertor modulates intensity on-the-fly for illumination-based multiplexing. The driver outputs 100 ns pulses, up to 24 kHz repetition rate. The circuit is demonstrated for two laser diodes and for two LEDs in an ASLM-enhanced pixel count display.
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ted L. Lee, Chuan Luo, Brandon Hellman, and Yuzuru Takashima "Pulsed illumination driver with intensity control and RGB mixing capabilities for high-resolution near to eye display", Proc. SPIE 11765, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) II, 1176510 (27 March 2021); https://doi.org/10.1117/12.2584163
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