PURPOSE: To obtain a high-speed optical signal generator by using a liquid crystal light valve and a light emitting diode array as a light source.
CONSTITUTION: Common signal electrodes consisting of transparent electrodes 119 and an opaque metallic electrode 120 are provided on a glass substrate 117, and signal electrodes consisting of transparent electrodes 121 and 122 are provided to a glass substrate 118. A liquid crystal 125 prepd. by adding 3wt% optical active material 4-(2-methyl butyl)-4'-cyanobiphenyl to a nematic liquid crystal is packed between the glass substrates 117 and 118 via a spacer 126. Polarizing plates 123 and 124 are disposed orthogonally on both sides of the liquid crystal cell, whereby a light valve is formed. A GaAlAs light emitting diode array 200 arrayed with light emission points in one row, a one-dimensional condenser lens 160, a liquid crystal light valve 150, and a near parabolic optical fiber array (imaging lens) are disposed on an imaging plane 170. Thereby, the high speed optical signal generator is obtained.
MIURA SADATSUGU
AOKI KENJI
GOMI YOSHIYUKI
TAKEI MASAKI
MATSUSHITA HARUKAZU
