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Hitachi High-Tech GLOBAL

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Company Profile

Company Name KELK Ltd.
Location Hiratsuka-city, Kanagawa-pref. JAPAN
Established 24412
Capital 390 Million Japanese Yen
(approx. US$3.5M)
100% owned by Komatsu
Net Sales Not available
Number of Employees 310 (as at Jan.2020)

Main Products

TEC (Thermo-Electric Cooler)

Example of application:

  • TOSA (XMD or TO-Can etc.)
  • Tunable Laser, iTLA, uiTLA
  • Pump Laser
  • InP Modulator
  • Quantum Cascade/Dot Laser
  • LiDAR
  • CMOS/CCD Sensor
  • DNA Diagnostic Device
  • Fiber Laser

TEG (Thermo-Electric Generator)

Generates electricity by waste heat.

  • Wireless Vibration Sensor Device.(Overhaul alert device by FFT analysis without battery or cable)
  • Multiple application for IoT sensing without any battery or cable.

Product Portfolio


Cutting Edge Technology

  • MINIMIZE Power Consumption.
  • MINIMIZE Optical Coupling Loss.
  • SIMPLIFIES Platform Assemble.
  • MAXIMIZE Module Performance.


  • Optimized overall performance enhanced by sophisticated simulation recipe through over 5 decades experience.
  • Outsource process to partner in Asia region in order to contribute cost reduction, shorter leadtime and capacity utilization.