摘要:
The present invention provides an inexpensive and easily manufactured adapter and optical module receptacle which can prevent light from leaking where an optical connector is disconnected, wherein a roughly L-shaped shutter plate (3) is attached in the housing (1) for fitting and insertion of an optical connector by utilizing a supporting plate. In the state where the shutter plate is attached, the roughly L-shaped erectable portion (7) of the shutter plate (3) is erected so as to shield light that is transmitted to the optical connector insertion port (2) of the housing (1). In the state where an optical connector is fitted in the housing (1), the corresponding erectable portion (7) is folded by the optical connector to ensure that the corresponding optical connector receives light. Where the optical connector is disconnected from the housing (1), the abovementioned erectable portion (7) is erected by its resilient restorative force, wherein the light is shielded and is prevented from leaking to the outside of the housing (1) through the optical connector portion (2).
摘要:
A semiconductor laser array has an array of a plurality of laser active sections mounted on a submount, with a common p-side electrode sandwiched therebetween. The laser active sections formed on a semiconductor substrate and separated from each other by separation channels are bonded onto the common p-side electrode in a junction-down fashion wherein the top layer of the laser active sections are bonded to the common p-side electrode. The semiconductor substrate are polished at the back surface for separation of the laser active sections from each other, followed by forming an n-side electrode for each of the laser active sections. The semiconductor laser array can be formed in a uniform thickness and can be driven by N-P-N transistor at a high speed.
摘要:
An ink jet printing head includes: a plurality of piezoelectric actuators arranged in rows on a substrate, each row including first piezoelectric elements and second piezoelectric elements which are alternately arrayed along the row, the first piezoelectric elements being actuatable to apply a compressive force to ink in accordance with print signals, the second piezoelectric elements being fixed and not actuated; and an ink chamber unit which includes ink chambers located above the first piezoelectric elements and containing ink. The ink chamber unit includes: an oscillation plate including diaphragm portions which are connected to the first piezoelectric elements and independently deformable in a direction perpendicular to the substrate by the first piezoelectric elements when actuated; and a nozzle plate which includes nozzles being located above the diaphragm portions and opened to the ink chambers, so that ink drops are respectively forced out from the nozzles when the first piezoelectric elements are actuated.
摘要:
This invention provides a semiconductor laser device that can be accurately and easily coupled with a optical waveguide device, a method of manufacturing such a semiconductor laser device and a method of coupling such a semiconductor laser device and a optical waveguide device. A semiconductor laser device according to the invention is provided with a stripe-shaped groove that is referred to for accurately locating its light-emitting section. A method of manufacturing a semiconductor laser device according to the invention comprises steps of forming a stripe-shaped light-emitting section, a stripe-shaped nonlight-emitting section and a stripe-shaped reference groove on a semiconductor substrate. With a method of coupling a semiconductor laser device and an optical waveguide device according to the invention, the light-emitting section of the semiconductor laser device is aligned with the optical waveguide device by referring to the stripe-shaped reference groove.
摘要:
The quantum barrier semiconductor optical devices according to this invention are characterized by strained layer super lattice multiple quantum barriers provided between active layer and p-clad layer or within p-clad layer to obtain resonance scattering of incident overflowing electrons, that is to realize phase condition in which the incident overflowing electron wave and reflected electron wave enhance each other, in the double heterostructure where active layer having at least one GaInAs(P) layer is sandwiched between n-clad layer and p-clad layer. In this case, the active layer should desirably have quantum well structure. The quantum barrier semiconductor optical device comprises a DCCtype double heterostructure made by growing an n-clad layer, a fist active layer having at least one GaInAs(P) sub-layer, a middle clad layer, a second active layer having at least one GaThAS(p) sub-layer, and a p-clad layer in the order of mention or vice versa and a super lattice resonance scattering type quantum barriers provided between the first active layer and middle clad layer or in the middle clad layer and/or between the second active layer and p-clad layer or within p-clad layer. In this case also, the active layer should desirably have quantum well structure and the quantum barriers should desirably be made up of strained layer super lattice.
摘要:
Provided is a transparent flexible printed wiring board which is excellent in flexibility, heat resistance and adhesion between a transparent film and a transparent conductive film.A transparent polyimide film, whose dimension change rate in association with a baking process is not larger than ±0.2%, is prepared. ITO ink containing ITO fine particles and a binder is printed in the form of a predetermined pattern on the transparent polyimide film by an ink-jet method. The ITO ink is then baked at 230 to 300° C., thereby forming a transparent conductive film with a binder ratio of 5 to 10 wt %.
摘要:
A magnetic element having an excellent direct-current saturation characteristic by effectively utilizing a size of a core is provided. The magnetic element has cores 11, 7, 8 and 17 formed of a magnetic material, buried conductor parts 21, 31 and 41 in the magnetic material, and a plurality of branch conductor parts 22, 23, 34, 35, 36, 37, 42 and 43 branching from the buried conductor parts 21, 31 and 41 to be a plurality of parts and separately turning around the magnetic material.
摘要:
An optical component is disclosed, which comprises a waveguide groove, having: a waveguide holding plane having a surface shape extending along a specific axial direction and capable of holding at least one optical waveguide while positioning it at at least a part of at least one side face thereof; and an opening portion extending substantially oppositely to the waveguide holding plane and being smaller in width than the outside diameter of at least the one optical waveguide in a specified widthwise direction perpendicular to the specified axial direction.
摘要:
A magnetic element having an excellent direct-current saturation characteristic by effectively utilizing a size of a core is provided. The magnetic element has cores 11, 7, 8 and 17 formed of a magnetic material, buried conductor parts 21, 31 and 41 in the magnetic material, and a plurality of branch conductor parts 22, 23, 34, 35, 36, 37, 42 and 43 branching from the buried conductor parts 21, 31 and 41 to be a plurality of parts and separately turning around the magnetic material.
摘要:
An optical fiber module lead frame has a plurality of lead terminals. One of the plurality of lead terminals functions as a lead terminal for inputting transmit signals for feeding electricity to a light emitting device from outside. One of the other lead terminals functions as a lead terminal for outputting received signals for sending electrical signals outputted from a photodetector to outside. An electric field between the lead terminal for inputting transmit signals and the lead terminal for outputting received signals is one source of crosstalk from the light emitting device side to the photodetector side. Then, provided is the configuration of suppressing the electric field between the lead terminal for inputting transmit signals and the lead terminal for outputting received signals.