摘要:
The present invention provides an optical switch for making part of incident light, which has been made incident on an optical waveguide, selectively emergent to a light emergence portion provided outside the optical waveguide. The optical switch includes a liquid crystal device for selective emergence of the incident light. An arbitrary layer of the liquid crystal device is set such that letting Δn be a difference between a refractive index no of the optical waveguide and a refractive index n1 of the arbitrary layer of the liquid crystal device, “d” be a thickness of the arbitrary layer, and λ be a wavelength of the incident light, the values of Δn, “d”, and λ satisfy a condition of 2.20×10−3≦|Δn·d·λ−1|≦3.03×10−3. With this optical switch, the uniformity of a light emergence efficiency can be easily realized by making use of a small change region in which the light emergence efficiency is not largely varied. The present invention also provides a display unit using the optical switches.
摘要:
The present invention provides an optical switch for making part of incident light, which has been made incident on an optical waveguide, selectively emergent to a light emergence portion provided outside the optical waveguide. The optical switch includes a liquid crystal device for selective emergence of the incident light. An arbitrary layer of the liquid crystal device is set such that letting Δn be a difference between a refractive index n0 of the optical waveguide and a refractive index n1 of the arbitrary layer of the liquid crystal device, “d” be a thickness of the arbitrary layer, and λ be a wavelength of the incident light, the values of Δn, “d”, and λ satisfy a condition of 2.20×10−3≦|Δn·d·λ−1|≦3.03×10−3. With this optical switch, the uniformity of a light emergence efficiency can be easily realized by making use of a small change region in which the light emergence efficiency is not largely varied. The present invention also provides a display unit using the optical switches.
摘要:
The present invention provides an optical switch for making part of incident light, which has been made incident on an optical waveguide, selectively emergent to a light emergence portion provided outside the optical waveguide. The optical switch includes a liquid crystal device for selective emergence of the incident light. An arbitrary layer of the liquid crystal device is set such that letting Δn be a difference between a refractive index no of the optical waveguide and a refractive index n1 of the arbitrary layer of the liquid crystal device, “d” be a thickness of the arbitrary layer, and λ be a wavelength of the incident light, the values of Δn, “d”, and λ satisfy a condition of 2.20×10−3≦|Δn·d·λ−1|≦3.03×10−3. With this optical switch, the uniformity of a light emergence efficiency can be easily realized by making use of a small change region in which the light emergence efficiency is not largely varied. The present invention also provides a display unit using the optical switches.
摘要:
An information receiving/display apparatus, which can receive and display third sensory information such as tactual information or olfactory information in addition to visual and/or audio information. A number of image display optical fibers and tactual representation fibers both having cores made of a liquid are arranged in alignment, and a number of image display control signal lines and tactual representation control signal lines made of piezoelectric element are aligned across the fibers, thereby to form the information receiving/display apparatus.
摘要:
The present invention provides an optical switch for making part of incident light, which has been made incident on an optical waveguide, selectively emergent to a light emergence portion provided outside the optical waveguide. The optical switch includes a liquid crystal device for selective emergence of the incident light. An arbitrary layer of the liquid crystal device is set such that letting &Dgr;n be a difference between a refractive index n0 of the optical waveguide and a refractive index n1 of the arbitrary layer of the liquid crystal device, “d” be a thickness of the arbitrary layer, and &lgr; be a wavelength of the incident light, the values of &Dgr;n, “d”, and &lgr; satisfy a condition of 2.20×10−3≦|&Dgr;n·d·&lgr;−1|≦3.03×10−3. With this optical switch, the uniformity of a light emergence efficiency can be easily realized by making use of a small change region in which the light emergence efficiency is not largely varied. The present invention also provides a display unit using the optical switches.
摘要:
A light emitting device and a method of fabricating the same in which a first cladding layer is formed on a substrate, then red, green and blue light emitting portions each made of II-VI semiconductor are formed in a horizontal direction with respect to a surface of the substrate on the first cladding layer, then a second cladding layer is formed on the light emitting portions, and the red, green and blue light emitting portions are electrically separated from each other so that three primary color light emitting portions of a self luminous type are formed on the same substrate through single crystal growth process by changing composition of a compound semiconductor layer.
摘要:
A luminescent semiconductor device comprises: an active layer composed of a Group II-VI semiconductor device which comprises at least one Group II element selected from the group consisting of zinc, magnesium, beryllium, cadmium, manganese and mercury, and at least one Group VI element selected from the group consisting of oxygen, sulfur, selenium and tellurium. the Group II-VI compound semiconductor forming said active layer contains at least one element selected from the group consisting of magnesium, beryllium and cadmium as the Group II element and tellurium as the Group VI element. At least one antidiffusion layer preventing diffusion of these elements from the active layer is provided on at least one surface of the active layer.
摘要:
A light emitting device and a method of fabricating the same in which a first cladding layer is formed on a substrate, then red, green and blue light emitting portions each made of II-VI semiconductor are formed in a horizontal direction with respect to a surface of the substrate on the first cladding layer, then a second cladding layer is formed on the light emitting portions, and the red, green and blue light emitting portions are electrically separated from each other so that three primary color light emitting portions of a self luminous type are formed on the same substrate through single crystal growth process by changing composition of a compound semiconductor layer.
摘要:
The heat exchanger includes heat exchange units. Each of the heat exchange units includes a plurality of plate fins and a plurality of flat tubes. The plate fins are arranged spaced apart from one another at intervals so as to allow air to flow therebetween. The flat tubes each have an L shape by bending and inserted through the plate fins so that a refrigerant flows therethrough in a direction in which the plate fins are arranged. The heat exchange units are combined to each other so as to form a rectangular shape. Thus, heat exchange can be efficiently performed by increasing the mounting area.
摘要:
A nickel thin film is formed, for example, to a thickness of 2 nm or more on a polyethylene naphthalate substrate by a vacuum evaporation method. A magnetoresistance effect element using ferromagnetic nano-junction is comprised by using two laminates each comprising a nickel thin film formed on a polyethylene naphthalate substrate, and joining these two laminates so that the nickel thin films cross to each other in such a manner that edges of the nickel thin films face each other.