An optical device includes a plastic-based film and a diffusing layer. The diffusing layer includes inner scattering elements that selectively scatter visible light having a wavelength range, and has pencil hardness of more than 2H under a 500 g-load specified in ISO/DIS 15184. When the optical device is arranged at a front side of a liquid crystal display apparatus that displays color near 8 test colors specified in CIE 1974, as a test color, chrominance .DELTA.u'v' of less than 0.05 is obtained based on a chromaticity coordinate (u.sub.0', v.sub.0') of CIE1976UCS observed in the front surface 100A1 of the liquid crystal display apparatus and a chromaticity coordinate (u', v') observed at an observation angle of .+-.60 degrees in horizontal and vertical directions of a screen of the liquid crystal display apparatus when a direction perpendicular to the screen is assumed to be 0 degrees.

 
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> Micromechanical mirrors with a high-reflection coating, method for production thereof and use thereof

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