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Toshifumi Mihashi, Naoki Nakamura, Yasuki Yamauchi, Keiji Uchikawa, Katsuaki Sakata; Hyperspectral one dimensional visual stimulus generator. Journal of Vision 2010;10(15):68. doi: 10.1167/10.15.68.
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© ARVO (1962-2015); The Authors (2016-present)
The system with the hyperspectral camera and hyperspectral display can reproduce the spectral information of objects, instead of color of objects. With this technology, a complete range of color values can be achieved and observer metameric failure can be avoided. Multispectral or hyperspectral displays were already developed by Yamaguchi, et al. and by Brown et al. Some of the authors of this study, Dr. Yamauchi and Dr. Uchikawa, have developed a programmable light source with digital micro mirror for measuring color matching function. In this study, we modified the programmable light source to build a new type of visual stimulus generator. The device developed in the previous study used the function of only one dimensional of Digital Micromirror Device (DMD) to adjust the power of monochromatic light between 400 and 700 nm. In this study, we used the other dimension to form 300 arrays of lines which consisted of independent combinations of the monochromatic light. The wavelength resolution was 3 nm. Although we used a high power Xenon lamp for the light source, the illuminance on the screen was 2 lx. We are adding Maxwellian view optics to observe the stimulus directly in order to overcome the dimness of the stimulus. It is crucial for the projection type of visual stimulus that an adequate light source be found.
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