The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.

Image Display Device

An optical data link includes first and second pluralities of transmission devices, at least one of which is configured as an array. A multichannel transmission link has a first end connected to the first plurality of transmission devices and a second end connected to the second plurality of transmission devices so as to form a plurality of parallel transmission channels therebetween. The multichannel transmission link includes a multicore fiber with a plurality of individual cores having a configuration matching the array configuration of the at least one plurality of transmission devices. The multicore fiber has an endface connected directly to the at least one plurality of transmission devices, with the individual cores of the multicore fiber aligned with respective devices in the at least one plurality of transmission devices. Further described are access networks and core networks incorporating a transmission link comprising at least one span of a multicore fiber.

Multicore fiber transmission systems and methods

An optical path deflecting element, an optical path deflecting apparatus, an image displaying apparatus, an optical writing apparatus, an optical interconnection apparatus, an optical element, and a fabrication method thereof The optical path deflecting element includes a pair of transparent substrates, transparent electrode films on the substrates to which a voltage having an inverse polarity is selectively applied, an alignment layer in the inner sides of the substrates, and a liquid crystal layer formed of a chiral smectic C phase between the substrates via the alignment layer and homogeneously aligned by the alignment layer The optical deflecting element can realize the uniformly-aligned liquid crystal layer more easily than a case in which the liquid crystal is aligned to become in a bistable condition For this reason, it is possible to improve yield in the fabrication

Optical path deflecting element, optical path deflecting apparatus, image displaying apparatus, optical element and manufacturing method thereof

A data communication system comprising a plurality of fiber optic cables and a fiber optic switching system, comprising: a support structure for securing light emitting/light receiving ends of the plurality of fiber optic cables in predetermined positions; and, means for re-directing light emitted from the light emitting/light receiving end of one of the fiber optic cables to the light emitting/light receiving ends of one, or more than one, of a plurality of the plurality of fiber optic cables. The re-directing means includes means for collimating and directing the light emitted from the end of one of the cables as a beam propagating along a predetermined direction and for re-directing the beam towards the end of another one of the cables selectively in accordance with an electrical signal. More particularly, the re-directing means includes electro-optical phase shifting medium, preferably liquid crystal molecules.

Optical beam steering system

A reflection-type liquid crystal display device includes upper and lower substrates which respectively have upper and lower electrodes, the upper and lower substrates being arranged in parallel with the upper electrode facing the lower electrode, and a liquid crystal layer sandwiched between the upper and lower substrates, the upper substrate being transparent and having protruding portions adjacent to the liquid crystal layer, each protruding portion having a surface downwardly inclined to defined a prism, the lower substrate having light reflection portions and light absorption portions, wherein when an electric field is applied to the liquid crystal layer, incident light into the upper substrate is selectively directed to the light reflection portions and the light absorption portions by means of the protruding portions and the liquid crystal layer.

Reflection-type and transmission-type liquid crystal display devices

PURPOSE:To make optical wirings variable and to make a light beam propagation direction possible to individually deflect with respect to plural input light beams by packing liquid crystals into the spaces which are formed between a first transparent substrate and a second transparent substrate and are divided by the ridge of grooves. CONSTITUTION:One surface of the transparent substrate 2 is worked into a saw-tooth shape in section, thereby, the plural grooves 2a having a right-angled triangular shape in section are formed in the same direction in parallel. The liquid crystals 7 are respectively packed into the spaces of a right-angled triangular shape in section formed between both transparent substrates 1 and 2. The liquid crystals 7 packed in the respective spaces are completely separated from each other. The respective input light beams are made incident through the transparent substrate 1 on the liquid crystal microprisms and are made incident on the bases of the respective grooves 2a of the transparent substrate 2. The orientation directions of the liquid crystals 7 rise perpendicularly to the plane of the transparent substrate 1 when voltages are impressed to the liquid crystals. The refractive indices of the liquid crystals 7 are changed to change the refractive angle at the boundaries between the transparent substrates 1, 2 and the liquid crystals 7, thereby, the progressing direction of the light beams can be deflected.

Liquid crystal microprism array and spatial optical beam connector and optical switch using the same

PURPOSE: To eliminate the need of an electric connector and mechanical alignment, to enhance economization, and to realize ultra high-speed, ultra high- density and ultra large-capacity optical connection between boards by connecting a surface light emitting laser array, an optical fiber optical connection circuit and a surface detector array by a light beam in free space without bringing them into contact with each other. CONSTITUTION: Optical interconnection between the boards is performed by using a surface light emitting laser 1-3 and a surface detector 1-4 on the board and connecting them through an optical fiber. They are connected by the light beam in the free space. Namely, the optical fiber, the laser 1-3 and the detector 1-4 are coupled by the light beam in optical contact with each other without using a connector. By such optical contact, trouble on the damage caused by the mechanical contact of the fiber, the laser array and the detector array in the case of drawing and inserting the board is avoided. By providing a guide pin 1-6, the fiber array and the surface light emitting laser array 1-3, the surface detector 1-4 are connected.

Inter-board optical interconnection device

PROBLEM TO BE SOLVED: To easily make the direction, connecting two strained parts of the polarization maintaining optical fiber, uniform to a specific direction. SOLUTION: A cylindrical ferrule 6 which has a flat part 6a at part of the outer periphery of the cylinder is mounted and fixed on the end part of the polarization maintaining optical fiber 5 so that the direction connecting the two strained parts 5a and 5c of the polarization maintaining optical fiber 5 and the flat part 6a of the ferrule 6 are in fixed position relation. Then the ferrule 6 is rotated or rolled on a flat member and then the flat part 6a of the ferrule 6 and the flat part of the flat member are matched with each other to make the direction, connecting the two strained parts 5c and 5c of each polarization maintaining optical fibers 5, uniform to the constant direction.

Method for aligning polarization maintaining optical fiber, and polarization maintaining optical fiber array

PROBLEM TO BE SOLVED: To provide an inter-board optical interconnection equipment capable of easily adjusting deviation with an optical system even when the position of board is deviated, and correctly aligning light beams between adjacent boards. SOLUTION: A variable apex angle prism 2-7 is arranged between adjacent boards 2-1 and the signal from light beam detection sensor 2-5 is fed back to the variable apex angle prism 2-7 so that an optical signal beam from a planar light emitting laser array 2-2 on one board can be made incident on any desired detector array 2-4 on the other board. Thus, the advancing direction of optical signal beam from the planar light emitting array 2-2 on one board to the detector array 2-4 on the other board is controlled through the variable apex angle prism.

Inter-board optical interconnection equipment

PROBLEM TO BE SOLVED: To provide an optical interconnection device between boards economically and exactly performing optical connection without necessitating exact control of the wavelength of a light source. SOLUTION: Light beam arrays 2-7 generated from surface light emitting arrays 2-2 having lens arrays 2-3 mounted on the end parts of the respective boards 2-1, are received by light deflection control array elements 2-5, the traveling direction of the light beam array is variably controlled for every individual beam and is made obliquely incident on mirrors 2-6. The light beam arrays 2-7 reflected by the mirrors 2-6 are received by photodetector arrays Z-4 having the lens arrays 2-3 and a light beam from a desired board is connected to the photodetector of the desired board.

Yamamoto Takeshi

Papers

Liquid crystal microprism array and spatial optical beam connector and optical switch using the same

Inter-board optical interconnection device

Method for aligning polarization maintaining optical fiber, and polarization maintaining optical fiber array

Inter-board optical interconnection equipment

Optical interconnection device between boards