What's special about Kyosemi Corporation?
Since its foundation in 1980, Kyosemi Corporation has been an R&D-focused opto-electronic manufacturer of photo-detecting diodes and light-emitting diodes (Photo-detectors and LEDs), establishing an integrated production line from front-end to back-end processing. At our inception, we successfully developed an AlGaAs liquid-phase epitaxy apparatus, based on an innovative, slow- cooling technique. Kyosemi is known as a pioneer that has helped lay the foundation for today's high brightness LEDs.
We are a manufacturer of optical semiconductor devices
We have the latest facilities and equipments for the design, manufacture, quality evaluation, and all other processes of opto-electronic devices. Since we carry out each and every step---from design, to front-end and back-end processing, all the way through to reliability checks---we can address customer-specific problems and produce prototypes that help fast-track product commercialization. We work to satisfy customers by both delivering products on time and assuring a high level of quality. We also supply products in various packages, such as hermetically sealed, epoxy potted, plastic molded, surface mounted, and transfer molded to meet a range of customer needs.
Our optical semiconductor devices are widely applied to the fields of opticalcommunications and optical and opto sensors, and measuring and control devices.
Integrated In-line process of plastic mold LED production In Kamisunagawa Plant
Optical communications
Kyosemi Corporation develops, manufactures and distributes photoelectric conversion devices used in telecommunications, Internet networking, and LAN (Local Area Network) systems.
There are generally two kinds of systems.
One is long-haul (backbone) and metropolitan networking systems based on DWDM (Dense Wave Division Multiplexing), in which a huge volume of information is transmitted through one glass fiber. Another is FTTH (Fiber To The Home) systems for connecting their subscribers.
Our long-wave photodiodes and opto-electronic modules are used in both systems and are incorporated into DVDM systems, ONTs (Optical Network Terminals), optical routers, optical transmitters and receivers, and other devices and equipments.
Pigtail modules for Optical Communication
- InGaAs Photodiodes
- InGaAs PIN-TIA Receivers
- InGaAs Avalanche Photodiodes
- InGaAs APD-TIA Receivers
- GaAs Photodiodes
- GaAs PIN-TIA Receivers
- Si PIN Photodiodes
- 850nm VCSELs
Photodevices for Sensors
Kyosemi Corporation develops, manufactures and distributes optical semiconductor devices like photo-detecting diodes (Photo-detectors) and light-emitting diodes (LEDs) that are sensitive over a wide spectrum, from ultraviolet to long wavelengths up to near infrared (NIR). Our standard products are compound semiconductor LEDs and high speed photo-detectors, Silicon photodiodes, phototransistors, photodiode arrays, and so on.
Photo-detectors that receive images and optical signals are sometimes called optical or opto sensors.
These optical devices are used for a wide range of applications that include FA (Factory Automation) and industrial equipment such as banknote readers, automatic control units, encoding systems, medical equipments, hazardous area industrial monitoring systems, and disaster-prevention systems, and so on.
Photodevices for Optical and Opto sensors
- Point Source LEDs
- Parallel Beam LEDs
- Multi Wavelength LEDs
- Ultra Violet LEDs
- Red LEDs
- Infrared LEDs
- Plastic Mold Visible LEDs
- Plastic Mold Infrared LEDs
- Silicon Photodiodes
- Silicon UV Sensors
- GaN UV Sensors
- High Speed Silicon Photodiodes
- InGaAs NIR Photodiodes
- Thermoelectrically Cooled InGaAs/InAs Photodiodes
- Silicon Photodiode Arrays
- Silicon Avalanche Photodiodes
- Silicon Phototransistors
Spherical micro solar cells (registered as Sphelar®)
Kyosemi Corporation develops, manufactures, and distributes spherical micro solar cells (registered as Sphelar®) as a new product line.
Sphelar® cells are processed to form positive (+) and negative (-) electrodes on a single crystal silicon sphere with a diameter of 1 to 2 mm. The Sphelar® cell is spherical, so it can capture light from all directions, thus improving its high efficiency photovoltaic power generation and light signal reception such as Aimulet, and so on.
Sphelar® modules are highly pliable, so can fit in various types of module shapes, such as transparent, flexible, and hemispherically domed or vaulted for various applications.
Furthermore, they can facilitate any combination of connections in series and/or parallel. Connected in a series, Sphelar® modules can generate enough voltage for water electrolysis and a further application in combination with fuel cell.
Sphelar® modules
- Domed or vaulted Sphelar® module used in Pico T-Engine
Refer to YRP Ubiquitous Laboratory, TRONSHOW2005 Press Presentation
http://www.ubin.jp/english/press/pdf/TEP041203_u05e.pdf - Concept design of fusion between Sphelar® cells and fuel cells
·Electrolysis of water to generate H2 and O2 gases using Sphelar® photovoltaic power generation
·Concept of a power generation system to combine Sphelar® photovoltaic cells and fuel cells
Our mission
Our vision is to integrate opto-electronic technologies relating to optical communications, optical wave-guides, and optical sensors in order to create innovative products unique to Kyosemi Corporation, and to do business in next-generation information communication markets to cover both of optical sensor networks and ubiquitous networking.
The value of our company is to combine both technologies of opto-electronics and Sphelar® cells so that we will be able to provide an abundant diversity of products for such markets.
It is Kyosemi Corporation's mission to contribute to society by achieving the maximum corporate value from now on.





