公开(公告)号：US20020060659A1

公开(公告)日：2002-05-23

申请号：US09995569

申请日：2001-11-29

Applicant: Fujitsu Limited

Inventor： Takahiro Matsuda ,  Shin Eguchi ,  Yoshihiro Mizuno ,  Masato Nakashima ,  Manabu Ishimoto ,  Hirokazu Aritake ,  Noriko Sato

IPC: G09G003/36

CPC classification number: G06K7/10663 ,  G02B5/1828 ,  G02B27/2228 ,  G02F1/292 ,  G06K7/10594 ,  G06K2207/1015

Abstract: An apparatus for deflecting light of the present invention comprises: (a) at least one pair of transference electrodes arranged facing one another; (b) a drive circuit which applies a voltage among the transference electrodes; and (c) a liquid crystal which is inserted among the transference electrodes, and whose parallel stripes that function as a diffraction grating when the voltage is applied among the transference electrodes are produced at a pitch corresponding to the applied voltage. The light can be scanned if a diffracted light by the apparatus for deflecting light is converted into a scanning light and a voltage value is changed temporally to apply the voltage among the transference electrodes. In a device for reading information, the scanning light is reflected in a bar code and the reflected light is detected by an apparatus for detecting light. In a device for stereoscopic display of the present invention, the apparatus for deflecting light is used as beam deflection means for deflecting the light beamed from a picture element which organizes the pictures of the picture display means.