Nonuniformity Measurement of Image Resolution under Effect of Color Speckle for Raster-Scan RGB Laser Mobile Projector

Junichi KINOSHITA; Akira TAKAMORI; Kazuhisa YAMAMOTO; Kazuo KURODA; Koji SUZUKI; Keisuke HIEDA

doi:10.1587/transele.2021DIP0001

Special Section on Electronic Displays

Nonuniformity Measurement of Image Resolution under Effect of Color Speckle for Raster-Scan RGB Laser Mobile Projector

Junichi KINOSHITA, Akira TAKAMORI, Kazuhisa YAMAMOTO, Kazuo KURODA, Koji SUZUKI, Keisuke HIEDA

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Keywords: speckle, color speckle, laser display, projector, image resolution, eye-diagram

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2022 Volume E105.C Issue 2 Pages 86-94

DOI https://doi.org/10.1587/transele.2021DIP0001

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Abstract

Image resolution under the effect of color speckle was successfully measured for a raster-scan mobile projector, using the modified contrast modulation method. This method was based on the eye-diagram analysis for distinguishing the binary image signals, black-and-white line pairs. The image resolution and the related metrics, illuminance, chromaticity, and speckle contrast were measured at the nine regions on the full-frame area projected on a standard diffusive reflectance screen. The nonuniformity data over the nine regions were discussed and analyzed.

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