Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1990-07-10
1992-04-07
Hille, Rolf
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
346 76PH, 359 43, 359 45, 359 68, 359 96, 430 20, G02F 113
Patent
active
051033321
ABSTRACT:
A color image forming method provides clear color images with good color balance by thermally controlling a thermosensitive medium, such as polymer liquid crystal. The medium is capable of reversibly assuming optical states of being transparent and of scattering light, and allows picture-element display areas in at least two colors to be composed on a surface thereof. Picture elements within color areas are selected if they correspond to the color whose spectral transmission center is, among those of the colors to be displayed, closest to the longest wavelength involved. Heat is applied such that the maximum haze degree of the selected picture elements is greater than that of picture elements corresponding to any of the other colors.
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Kai Takashi
Kaneko Shuzo
Ohnishi Toshikazu
Canon Kabushiki Kaisha
Hille Rolf
Ho Tan
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