High-definition laser display system using multibeam scanning

Zhenming Zhao; Yongda Li; Baihe Lang

doi:10.1117/12.403989

11 October 2000 High-definition laser display system using multibeam scanning

Zhenming Zhao, Yongda Li, Baihe Lang

Proceedings Volume 4224, Biomedical Photonics and Optoelectronic Imaging; (2000) https://doi.org/10.1117/12.403989
Event: Optics and Optoelectronic Inspection and Control: Techniques, Applications, and Instruments, 2000, Beijing, China

Abstract

The design and principles of a high definition laser display system with multi-beam scanning are described. The system employs 4 laser beams each being composed of red, green and blue components. The four beams from one scanner are scanned simultaneously by a rotating polygonal mirror for horizontal deflection and by a galvanometer for vertical deflection. Compared with conventional single-beam scanning, the new design has the following advantages: 1) The rotational speed of the polygonal mirrors can be reduced by a factor of 4, which would improve the system performance and decrease the difficulties of the manufacture of the system. The size of the polygonal facet and, therefore, the laser beam diameter can be increased which would decrease the pixel diffusion. 2) The simultaneous operation of the 4 modulators would improve the horizontal resolution by a factor of 4. 3) For the same screen brightness, the single pixel power density can be reduced by a factor of 4 which would decrease the hazardous laser radiation.

Citation Download Citation

Zhenming Zhao, Yongda Li, and Baihe Lang "High-definition laser display system using multibeam scanning", Proc. SPIE 4224, Biomedical Photonics and Optoelectronic Imaging, (11 October 2000); https://doi.org/10.1117/12.403989

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