Lazoc Incorporated

Lazoc Incorporated (株式会社レーザック) is a Japanese technology company that develops, designs, manufactures, and sells fiber-optic sensing systems for structural monitoring. Founded on April 15, 2002, the company is headquartered in Katsushika-ku, Tokyo, and is led by representative director Yuichi Machishima. Its core technology was transferred from research conducted at the University of Tokyo's Department of Environmental and Ocean Engineering, specifically an ultrasonic measurement technique based on the Doppler effect in optical fibers. Lazoc's systems are used to detect a wide range of structural anomalies—leaks, collapses, fractures, cracks, temperature and pressure fluctuations, wall thinning, deformation, deflection, vibration, delamination, and corrosion—in social infrastructure and industrial plants. The company's product portfolio includes FOD (Fiber Optic Doppler) sensor systems, DAS (Distributed Acoustic Sensor) systems, FBG/OFDR sensor systems, FBG/WDM sensor systems, POF/LS3 systems, and fiber-optic power-fed sensing systems, along with AE recording and analysis software. These systems are applied in monitoring underground rock masses and tunnels, detecting cracks in metal piping and concrete, identifying external corrosion in pipes, and detecting abnormalities in rotating machinery bearings. Lazoc emphasizes the advantages of fiber-optic sensors over conventional electrical sensors, including low signal attenuation for long-distance transmission, immunity to electromagnetic noise, excellent lightning resistance, water resistance, and intrinsic explosion-proof properties. The company is a member of several academic and professional associations, including the Fiber Optic Sensing Promotion Association, the Japan Society of Civil Engineers, the Japanese Geotechnical Society, the Society of Exploration Geophysicists of Japan, the Japanese Society for Non-Destructive Inspection, the AE Technology Research Group (rock mass field), and the OSV Research Group. It holds a construction business license for electrical and telecommunication works (Tokyo Governor's License No. 133244). Lazoc maintains ongoing joint research with the University of Tokyo and collaborates with universities and research institutions across Japan. The company positions itself as a field monitoring enterprise with optical sensing technology at its core, aiming to provide not just sensing devices but complete answers to customer needs through structural monitoring, condition monitoring, and damage screening.

Lazoc Incorporated was established on April 15, 2002, as a technology transfer venture from the University of Tokyo's Graduate School of Engineering, Department of Environmental and Ocean Engineering, Design and Equipment Laboratory. The founding technology was an ultrasonic measurement technique based on the Doppler effect in optical fibers, invented at the university. The company was founded with the aim of commercializing innovative sensing devices for the maintenance of social infrastructure and industrial plants. In its early years, Lazoc focused on introducing its sensing devices to the market. However, the company soon recognized that customers were not merely seeking sensing devices but rather complete solutions—answers to their monitoring challenges. This realization led Lazoc to expand its offerings from standalone sensing equipment to comprehensive structural monitoring, condition monitoring, and damage screening services. The company evolved to provide systems that not only sense but also analyze and identify damage locations. Over the years, Lazoc has developed a range of fiber-optic sensing systems, including FOD (Fiber Optic Doppler) systems capable of capturing micro-elastic waves (Acoustic Emission) up to 1 MHz, DAS (Distributed Acoustic Sensor) systems for vibration and acoustic sensing along entire optical fibers, FBG/OFDR systems for continuous strain measurement at pitches as small as 0.6 mm, and FBG/WDM systems for multi-point sensing. The company also developed POF/LS3 systems using plastic optical fibers and fiber-optic power-fed sensing systems. Lazoc has maintained a continuous joint research framework with the University of Tokyo and has expanded collaborations with universities and research institutions across Japan. The company is an active participant in academic societies, including the Fiber Optic Sensing Promotion Association, the Japan Society of Civil Engineers, the Japanese Geotechnical Society, the Society of Exploration Geophysicists of Japan, the Japanese Society for Non-Destructive Inspection, the AE Technology Research Group (rock mass field), and the OSV Research Group. It holds a construction business license for electrical and telecommunication works (Tokyo Governor's License No. 133244). As of the latest available information, Lazoc remains a private company headquartered in Katsushika-ku, Tokyo, with a small, highly specialized workforce. The company continues to focus on optical sensing technology as its core and positions itself as a field monitoring enterprise dedicated to solving difficult technical challenges in materials, structures, optical engineering, and electrical engineering.

• 2002

  Lazoc Incorporated founded on April 15 as a technology transfer venture from the University of Tokyo.

• Developed FOD (Fiber Optic Doppler) sensor system for detecting micro-elastic waves up to 1 MHz.

• Developed DAS (Distributed Acoustic Sensor) system for vibration and acoustic sensing along entire optical fibers.

• Developed FBG/OFDR sensor system for continuous strain measurement at pitches as small as 0.6 mm.

• Developed FBG/WDM sensor system for multi-point sensing on a single optical fiber.

• Developed POF/LS3 (Light State Sensor System) using plastic optical fibers.

• Developed fiber-optic power-fed sensing system.

Field monitoring enterprise using optical fiber sensing technology for infrastructure and industrial plant maintenance.

• FOD Sensor System

  Fiber Optic Doppler system capable of capturing micro-elastic waves (Acoustic Emission) up to 1 MHz. Used for monitoring underground rock masses and tunnels, detecting cracks in metal piping and concrete, detecting external corrosion in pipes, and detecting abnormalities in rotating machinery bearings.

• DAS System

  Distributed Acoustic Sensor system that captures vibration and acoustic signals along entire optical fibers. Also known as DVS (Distributed Vibration Sensor). Key specifications: maximum measurement distance 100 km, sampling rate 1 kHz (typical), spatial sampling minimum 0.2 m, gauge length 5 m (typical).

• FBG/OFDR Sensor System

  Optical Frequency Domain Reflectometry system for continuous strain measurement at pitches as small as 0.6 mm. Uses FBG sensors and frequency multiplexing to determine position and wavelength shift. Registered with NETIS (KT-230088-A).

• FBG/WDM Sensor System

  Wavelength Division Multiplexer system for multi-point sensing on a single optical fiber. The most widely used fiber-optic sensor globally, applicable to strain, temperature, pressure, acceleration, and other sensors.

• POF/LS3 System

  Light State Sensor System using plastic optical fiber (POF) to inexpensively capture phenomena at the fiber tip. Used for mortar filling detection.

• Fiber-Optic Power-Fed Sensing System

  Sensor network powered by fiber optic, transmitting laser power through communication optical fibers.

• AE Recording and Analysis Software

  Software for recording and analyzing acoustic emission data.

• FBG Sensors

  Fiber Bragg Grating sensors used in various sensing systems.

1. 1株式会社レーザックlazoc.jp
2. 2会社情報 - 株式会社レーザックlazoc.jp
3. 3製品・システム - 株式会社レーザックlazoc.jp
4. 4Lazoc Incorporated (Japan) - Wikidatawikidata.org