With Japan quality manufacturing and world class technology, we lead optical device solution
Our optical technology supports 5G and IoT across the globe
Kyoto Semiconductor offers optical devices which are strategically important in 5G communication base stations and IoT.
We offer high quality optical devices and solutions to customers worldwide
Our solutions include 30GHz photodiode, wide wavelength area from ultraviolet to mid-infrared and high-precision of packaging.

News & Topics

  • News

    Our Action against Coronavirus (COVID-19)

    As regards the infection prevalence, we are taking the following measures to mitigate the infection risk in order to protect our employees and clients, stakeholders from the virus.

    ・Frequent wash hands and gargle throat thoroughly with a sanitizer and clean flowing water.
    ・Encourage our visitors to sanitize their hands with an equipped sanitizer.
    ・Allow staggered working hours to mitigate the infection risk by avoiding rush hour commuting by public transportations.
    (Headquarters and Tokyo sales office only)

    ■The period of the staggered working hours :
    ※We may extend the introduction period depending on circumstances.

  • Exhibition

    *Event Cancelled IR + UV EXPO(OPIE'20),
    Apr.22~24, 2020 (Pacifico Yokohama, Japan / Booth#F-52)

  • Exhibition

    KYOTO SEMICONDUCTOR Co., Ltd. will exhibit at Photonics West2020
    February 4 to 6, 2020 (The Moscone Center, San Francisco, California, USA / Booth #2267)

About Us

About Us

To respond to the latest needs of our customers, our development, production, and sales divisions are working together to manufacture products that take advantage of our high degree of specialization and proprietary technologies.

Product line-up

Optical Communication Devices
Optical Communication Devices

Supporting the progression of an Advanced Information Society in the Optical Communications Field.
Amongst the various types of optical communication devices, we are concentrating its efforts in the field of fiber-optic power monitors for Optical communication Networking Systems.

Photodevices for Sensors

We are expanding our market reach into Intelligent Transport System (ITS) applications and making efforts in developing new applications for Image processing, Surveillance camera, Light source for plant growth, Sterilization/Disinfection equipment and Gas analyzer and so on.

Photodevices for Sensors