High-resolution scanning laser projection display with diode-pumped solid state lasers

Christhard Deter; Juergen Kraenert

doi:10.1117/12.383370

25 April 2000 High-resolution scanning laser projection display with diode-pumped solid state lasers

Christhard Deter, Juergen Kraenert

Proceedings Volume 3954, Projection Displays 2000: Sixth in a Series; (2000) https://doi.org/10.1117/12.383370
Event: Electronic Imaging, 2000, San Jose, CA, United States

Abstract

We demonstrate bright pictures in the pixel format of HDTV and XGA with a current power consumption lower than 2.5 kW and a RGB laser output power of 15 W with the wavelengths 446 nm, 532 nm and 629 nm. The laser projection system consists of a scanning unit with a rotating polygon scanner (rotational frequency up to 2 kHz) to write the lines and a galvanometer scanner for the vertical deflection of the lines. The system allows the separation of the RGB-laser with the video modulation part from the free moving scanning unit with an optical fiber. The optical fiber provides the video modulated RGB-laser power in a collinear beam to the scanner. We explain detailed the requirements for RGB--laser beams. The main demands for high resolution and sharp scanned pictures are near diffraction limited laser beams, but at least with an optical beam product of < 0.75 mm mrad. Furthermore we give an outlook for an increase of pixel resolution.

Citation Download Citation

Christhard Deter and Juergen Kraenert "High-resolution scanning laser projection display with diode-pumped solid state lasers", Proc. SPIE 3954, Projection Displays 2000: Sixth in a Series, (25 April 2000); https://doi.org/10.1117/12.383370

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