6.3: Measurement of Image Quality for Laser Projection Displays based on the Audience Viewing

• Published in: SID International Symposium Digest of technical papers 2021-08, Vol.52 (S2), p.119-122
• Main Authors: Wang, Jianping, Mou, Xi, Wen, Chunao
• Format: Article
• Language: English
• Subjects: Audience viewing; Display devices; Fresnel lens; Fresnel lenses; IEC; Image quality; Inclination angle; International Standards; Laser displays; Lasers; LMD; Measurement methods; Projection; Projector; Screen uniformity
• ISSN: 0097-966X; 2168-0159
• DOI: 10.1002/sdtp.15035

The laser display system consists of a laser projector and a screen, and its image quality depends not only on the output image of the projector. Still, it is also closely related to the screen's performance and the installation geometries, including distance, projection ratio, inclination angle, etc. Recently, IEC TC110 Electronic Displays has published the international standard of Measuring Methods of Image Quality for Laser Projection Displays (IEC 62906‐5‐3:2021). This IS contains the requirements of measuring environmental conditions, optical measuring equipment, installation and alignment of the screen, test patterns, measurement point locations, and procedures. This paper will introduce the practical implementation methods of the measurement methods involved in the standard. At the same time, the measurement method based on audience viewpoints is studied, so the measurement is more in line with the actual laser display applications. The results of both methods were compared, especially for the Fresnel lens screen.