TY - JOUR
T1 - Heat-resistant liquid crystal light modulator containing polymer network for high-power luminaires
AU - Fujikake, Hideo
AU - Tanaka, Yoshiaki
AU - Kimura, Saburo
AU - Asakawa, Hisashi
AU - Tamura, Takemi
AU - Kita, Hiroshi
AU - Takeuchi, Kiyofumi
AU - Ogawa, Hiroshi
AU - Nagashima, Akio
AU - Utsumi, Yozo
AU - Takizawa, Kuniharu
PY - 2000/10
Y1 - 2000/10
N2 - This paper describes a heat-resistant liquid crystal light modulator, which contains a 20-μm-thick polymer-dispersed liquid crystal film comprising tolane nematic liquid crystal with a high nematic-isotropic phase-transition temperature of 160°C and a three-dimensional fine polymer network of polyacrylate formed by means of photopolymerization-induced phase separation. The light modulator with an electrically controlled light scattering function can operate in the wide temperature range from room temperature to 120°C with excellent thermal stability. A new light-controllable spot luminaire system using the light modulator and a 575 W high-intensity metal halide lamp is also demonstrated with a high extinction ratio of more than 100 for illumination of television studios and stages.
AB - This paper describes a heat-resistant liquid crystal light modulator, which contains a 20-μm-thick polymer-dispersed liquid crystal film comprising tolane nematic liquid crystal with a high nematic-isotropic phase-transition temperature of 160°C and a three-dimensional fine polymer network of polyacrylate formed by means of photopolymerization-induced phase separation. The light modulator with an electrically controlled light scattering function can operate in the wide temperature range from room temperature to 120°C with excellent thermal stability. A new light-controllable spot luminaire system using the light modulator and a 575 W high-intensity metal halide lamp is also demonstrated with a high extinction ratio of more than 100 for illumination of television studios and stages.
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U2 - 10.1143/jjap.39.5870
DO - 10.1143/jjap.39.5870
M3 - Article
AN - SCOPUS:0034291421
VL - 39
SP - 5870
EP - 5874
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 10
ER -