Apparatus for deflecting light, device for scanning light, device for reading information and device for stereoscopic display
First Claim
1. An apparatus for deflecting light, comprising:
- (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 which function as a diffraction grating when the voltage is applied among the transference electrodes are produced at a pitch corresponding to the applied voltage.
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Accused Products
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.
20 Citations
30 Claims
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1. An apparatus for deflecting light, comprising:
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(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 which function as a diffraction grating when the voltage is applied among the transference electrodes are produced at a pitch corresponding to the applied voltage. - View Dependent Claims (2, 3)
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4. A device for scanning light, comprising:
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(a) an apparatus for deflecting light whose liquid crystal is inserted among the transference electrodes arranged facing one another, and parallel stripes which function as a diffraction grating when the voltage is applied to the transference electrodes are produced at a pitch corresponding to the applied voltage in the liquid crystal;
(b) a drive circuit which applies a voltage whose voltage value changes temporally among the transference electrodes of said apparatus for deflecting light;
(c) a light source which beams the light which will be injected into said apparatus for deflecting light. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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14. A device for reading information, comprising:
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(a) an apparatus for deflecting light whose liquid crystal is inserted among the transference electrodes arranged facing one another, and parallel stripes which function as a diffraction grating when the voltage is applied to the transference electrodes are produced at a pitch corresponding to the applied voltage in the liquid crystal;
(b) a drive circuit which applies a voltage whose voltage value changes temporally among the transference electrodes of said apparatus for deflecting light;
(c) a light source which beams the light which will be injected into said apparatus for deflecting light; and
(d) an apparatus for detecting light which detects a reflected light when the scanning light diffracted by said apparatus for deflecting light is reflected in a information medium.
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17. A device for stereoscopic display, comprising:
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(a) two-dimensional-picture-display means for displaying two-dimensional pictures which vary in visual directions;
(b) beam deflection means for deflecting a light beamed from a picture element which organizes the pictures of said picture display means, wherein the apparatus for deflecting light whose liquid crystal is inserted among the transference electrodes, and parallel strips which function as a diffraction grating when a voltage is applied among the transference electrodes are produced at a pitch corresponding to the applied voltage in the liquid crystal is used for said beam deflection means.
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30. A system for stereoscopic picture communication which comprises a transmission side that transmits a plurality of two-dimensional pictures which vary in directions and a receiving side that receives the transmitted two-dimensional pictures, and displays the two-dimensional pictures by the two-dimensional image display means and displays a stereoscopic picture in a remote location by deflecting the light beamed from the picture element which organizes the pictures of said image display means corresponding to the varied visual directions in said beam deflection means,
wherein an apparatus for deflecting light whose liquid crystal is inserted among the transference electrodes arranged facing one another, and parallel stripes which function as a diffraction grating when the voltage is applied among the transference electrodes are produced at a pitch corresponding to the applied voltage is used for said beam deflection means.
Specification