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Influence of spectral linewidth and wavelength selection of laser display
Author(s): Guan Wang; Yuhua Yang; Tianhao Dong; Chun Gu; Lixin Xu
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Paper Abstract

Laser display technology has developed rapidly in the past decade because it has advantages of high color saturation, high conversion efficiency, long life span and the capability to show real objects accurately. Many new laser technologies such as ALPD (Advanced Laser Phosphor Display) solution, Two Primary and three Primary Laser Display solutions have been studied for handling wide-gamut standard of Rec.2020 to reproduce the natural object colors faithfully. Different kinds of laser source including LD (laser diodes), diode-pumped solid-state laser, LD pumped Phosphor, VCSEL (Vertical-cavity surface-emitting laser) and fiber laser have been utilized in these solution. They have different center wavelengths and different linewidths which influence the color gamut and the speckle contrast of different display systems. In this paper, we calculate the color solid volume of laser display systems, and systematically investigate the color gamut conditions among display systems with different spectral linewidth selecting and different combination of three primaries. The color gamut of Rec.2020 is set as an object of comparison, in which the center wavelength of three primaries is set as Red=630nm, Green=532nm and Blue=467nm with spectral line width=1 nm. White balanced point is set as D65(x=0.3127, y=0.3291) and curve of color gamut as a function of spectral linewidth is calculated in CIELAB space. Our results would give researchers working on laser display a reference to choose suitable laser source with center wavelength and linewidth to keep a balance between laser speckle and color saturation.

Paper Details

Date Published: 29 March 2019
PDF: 6 pages
Proc. SPIE 11046, Fifth International Symposium on Laser Interaction with Matter, 110460V (29 March 2019); doi: 10.1117/12.2524267
Show Author Affiliations
Guan Wang, Univ. of Science and Technology of China (China)
Yuhua Yang, Univ. of Science and Technology of China (China)
Tianhao Dong, Univ. of Science and Technology of China (China)
Chun Gu, Univ. of Science and Technology of China (China)
Lixin Xu, Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 11046:
Fifth International Symposium on Laser Interaction with Matter
YiJun Zhao, Editor(s)

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