摘要:
A semiconductor laser element comprising: a clad layer of a first conductivity type; an active layer; a first clad layer of a second conductivity type; a ridge made of a second clad layer of the second conductivity type and a cap layer of the second conductivity type, which are layered on the first clad layer of the second conductivity type, in this order starting from the first clad layer side; a dielectric film formed on ridge sides other than a top portion of the ridge; and a metal electrode layer that covers the ridge, wherein the width of the bottom of the cap layer and the width of the top surface of the second clad layer are approximately equal.
摘要:
A semiconductor laser element comprising: a clad layer of a first conductivity type; an active layer; a first clad layer of a second conductivity type; a ridge made of a second clad layer of the second conductivity type and a cap layer of the second conductivity type, which are layered on the first clad layer of the second conductivity type, in this order starting from the first clad layer side; a dielectric film formed on ridge sides other than a top portion of the ridge; and a metal electrode layer that covers the ridge, wherein the width of the bottom of the cap layer and the width of the top surface of the second clad layer are approximately equal.
摘要:
There is provided a semiconductor laser device which is generally uniform in carrier concentration of a clad layer, almost free from strain, and less demanding for time and labor in its manufacturing, and which has stable characteristics. On an n-GaAs substrate, an n-type clad layer, an active layer, a p-type clad layer, and a cap layer are stacked one on another at a temperature of 700-750° C. Widthwise both side portions of the cap layer as well as widthwise both side specified-depth portions of the p-type clad layer are removed by etching to form a ridge portion, and a current constriction layer is formed on widthwise both sides of the ridge portion. A flattening layer having a planar surface is formed on the current constriction layer and the cap layer by slow cooling LPE process at a temperature of 700° C. or lower. On the flattening layer, a contact layer is formed by MOCVD process at a temperature of about 650° C.
摘要:
A system for providing multiple services by using one or more electronic devices connected to the system includes a data processing apparatus, a portable terminal including an obtaining unit that obtains device data from a target electronic device included in the one or more electronic devices, the device data identifying the one or more electronic devices, a receiving part that receives a selection of a target service included in the multiple services, and a determining part that determines whether the target service can be executed by the target electronic device according to the device data obtained from the target electronic device. In a case where the determining part determines that the target service can be executed by the target electronic device, the portable terminal and the data processing apparatus cooperate with each other and control the target electronic device for providing the target service.
摘要:
A coating and developing system includes processing blocks of the same construction each built by stacking up a plurality of unit blocks including a film forming unit block and a developing unit block in layers. The processing blocks are arranged longitudinally between a carrier block and an interface block. The number of processing blocks like the processing blocks arranged between the carrier block and the interface block is adjusted to adjust the throughput of the coating and developing system. Thus, a coating and developing system capable of achieving a desired throughput can be easily designed and manufactured.
摘要:
A lens-attached light-emitting element having an improved optical availability efficiency includes a composite lens provided on an approximately U-shaped light-emitting area of the light emitting element array. Four spherical lenses are arranged in such a manner that each is centered in the neighborhood the an end of a respective one of three segments of a U-shaped polygonal line corresponding to positions where light emitted by the U-shaped light-emitting area is a maximum Three cylindrical lens are arranged between two of the spherical lens, respectively, each cylindrical lens having an axis parallel with each segment. These four spherical lenses and three cylindrical lenses together constitute the composite lens. The light-emitting element further comprises an antireflection film covering the light-emitting area, and the composite lens is formed on the surface of the antireflection film.
摘要:
A light-emitting element array with the improvement of the light-emitting efficiency and the improvement of the uneven amount of light is provided.A light-emitting element array comprises a light-emitting portion array consisting of a plurality of light-emitting portions linearly arranged in a main scanning direction, and a micro-lens formed on each of the light-emitting portions, wherein the micro-lens has a shape of the length of a sub-scanning direction different from the length of the main scanning direction, and the length of the sub-scanning direction is longer than the length of the main scanning direction, and is 3.5 times or less of the length of the main scanning direction.
摘要:
To provide a rod-like light guide and a line lighting device including the rod-like light guide, both of which are easy to include in an image reading device, a contact-type image sensor and an image reading device. For instance, a protruding portion having a flat or curved surface is formed by grinding an end face of a rod-like light guide in a longitudinal direction while leaving at least 80% of the surface area of the end face, and a reflective surface is formed by bonding a heat transfer film to the protruding portion. Thus, even if a portion of the protrusion portion melts when performing thermal processing on the heat transfer film, the portion will not jut out beyond a cross-sectional area of the rod-like light guide, and the rod-like light guide can be easily contained in a case.
摘要:
A coating and developing system has a first processing block, a second processing block, and a transfer block interposed between the first and the second processing block. A first direct carrying means carries substrates from a carrier block to the transfer block. The transfer block distributes the substrates to respective film forming unit blocks of the first and the second processing block. Substrates on which films have been formed by the first and the second processing block are collected temporarily in the transfer block. A second direct carrying means carries the substrate collected in the transfer block from the transfer block to an interface block. Use of the first and the second processing block can improve the throughput of the coating and developing system. Since a carrying route from the carrier block to the first processing block, and a carrying route from the carrier block to the second processing block are the same, a carrying program is easy to create.
摘要:
A lens-attached light-emitting element having an improved optical availability efficiency includes a composite lens provided on an approximately U-shaped light-emitting area of the light emitting element array. Four spherical lenses are arranged in such a manner that each is centered in the neighborhood the an end of a respective one of three segments of a U-shaped polygonal line corresponding to positions where light emitted by the U-shaped light-emitting area is a maximum Three cylindrical lens are arranged between two of the spherical lens, respectively, each cylindrical lens having an axis parallel with each segment. These four spherical lenses and three cylindrical lenses together constitute the composite lens. The light-emitting element further comprises an antireflection film covering the light-emitting area, and the composite lens is formed on the surface of the antireflection film.