International Light Technologies

What International Light Technologies does

International Light Technologies (ILT), founded in 1965 in Peabody, Massachusetts, designs and manufactures professional-grade optical measurement instruments and specialty light sources. Its product portfolio includes light meters, spectrometers, radiometers, and photometers configured for UV, VIS, and IR applications, alongside specialty lamps (tungsten halogen, neon, UV LEDs, and lamp holders) and custom LED lighting solutions. Core flagship products include the ILT2400UVGI+ system for validating UVC disinfection dosage, the ILT750 Bili Light Meter for neonatal jaundice treatment irradiance measurement, and the ILT960 Mini Spectrometer Series paired with proprietary SpectrILight III software.

ILT operates an ISO/IEC 17025:2017 accredited calibration laboratory (UKAS recognized, NIST traceable) at its Peabody headquarters and at a second facility in Ostfildern, Germany, servicing both ILT-branded and third-party instruments from over 40 manufacturers. Revenue is generated through hardware sales, accredited calibration services, OEM custom work, and a usage-based equipment rental program for radiometers and spectroradiometers. Customers span UVGI/disinfection system operators, healthcare and medical-device manufacturers (notably neonatal care), industrial and research laboratories, and OEM integrators requiring custom light sources. The company distributes globally via direct sales (phone/email, 8AM-5PM ET), an e-commerce storefront, and RMA-based service workflows.

Following a 2024 strategic alignment, ILT operates as a division of Labsphere, Inc., combining 90+ years of joint expertise in illuminant sources, measurement equipment, calibration, and reflectance materials. ILT remains a privately held Massachusetts corporation with 11-50 employees.

Name

International Light Technologies

Legal name

International Light Technologies, Inc.

Website

https://intl-lighttech.com

Company type

Private

Founded year

1965

Operating status

Operating

Headcount range

11–50 employees

Short description

International Light Technologies (ILT) designs and manufactures professional-grade light meters, spectrometers, radiometers, and specialty light sources, and operates ISO/IEC 17025 accredited calibration labs in the US and Germany for UVGI, medical, industrial, and OEM customers. Founded 1965, now a division of Labsphere, Inc.

Ownership category

akta.pro rank

Product category

Optical Measurement Instruments

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Electric Lighting Equipment Manufacturing (33513), Commercial, Industrial, and Institutional Electric Lighting Fixture Manufacturing (335132)

SIC

Optical Instruments & Lenses (3827), Industrial Instruments For Measurement, Display, And Control (3823), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)

akta.pro primary industry

Optical & Light Sensors (Photodiodes/ALS/Color/UV) (HDAHALAE)

akta.pro secondary industries

Optoelectronic Components (LEDs, photodiodes, optocouplers, optical sensors) (IMAGAJAF), Specialty & Task/Workstation Lighting (Inspection/task lights, cleanroom/food-grade, portable work lights) (IMAGAIAK)

Keywords

• Light measurement instruments
• Optical calibration services
• UVC disinfection measurement
• Spectrometer radiometer products
• Specialty LED light sources

Headquarters

HQ city

Peabody

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Light Measurement Instruments: Sale of professional-grade light meters, spectrometers, radiometers, and photometers for various applications including UVGI, medical, and general light measurement.
2. Specialty Light Sources: Sale of instrumentation and sensor light sources including visible, IR, tungsten halogen, neon, mini, LED lamps, reflector lamps, UV LEDs, and lamp holders.
3. Calibration Services: ISO/IEC 17025:2017 accredited calibration services for ILT and non-ILT optical meters and measurement devices, performed in Peabody, MA and Ostfildern, Germany facilities.
4. Equipment Rentals: Rental of radiometers and spectroradiometers available through the eStore, providing flexible access to equipment without outright purchase.
5. LED Lighting Solutions: Custom and off-the-shelf LED lighting solutions and retrofits for various applications.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

International Light Technologies designs, manufactures, and sells professional-grade light measurement instruments including light meters, spectrometers, radiometers, and photometers for UV, VIS, and IR applications. The company complements its hardware with ISO/IEC 17025:2017 accredited calibration services, equipment rentals, custom LED lighting solutions, and specialty light sources for OEM and laboratory customers.

Product overview

International Light Technologies offers a portfolio of optical measurement and light source products. The core offerings include professional-grade light meters (ILT2400UVGI+, ILT750 Bili Light Meter), spectrometers (ILT960 series with SpectrILight III software), and specialty light sources. These are complemented by ISO/IEC 17025:2017 accredited calibration services and LED lighting solutions. The company operates as a division of Labsphere, Inc. following a 2024 merger.

Differentiator

Problem solved

Functional benefit

Products and services

• ILT2400UVGI+ Detector System UVGI measurement system for validating disinfection dosage from UVC light sources used in air, water, surface, and PPE decontamination. Includes meter, detector, ISO/IEC 17025:2017 accredited calibration, and carrying case. For organizations deploying UVC disinfection systems.
• ILT750 Bili Light Meter Medical device for measuring irradiance in neonatal jaundice/hyperbilirubinemia treatment systems. Features automatic scanning and calculation without manual addition or computation. For hospitals, NICUs, and medical device manufacturers.
• ILT960 Mini Spectrometer Series Portable, calibrated spectrometers available in three models (ILT960-UV, ILT960-VIS, ILT960-BB) with configurable optic kits. Includes SpectrILight III software and ISO/IEC 17025:2017 accredited, NIST traceable calibration. For research labs, manufacturers, and quality control applications.
• ISO/IEC 17025:2017 Calibration Services Accredited calibration services for optical meters, spectrometers, spectroradiometers, radiometers, photometers, UV meters, light sources, photodetectors, LEDs, lamps, integrating spheres, and reflectance standards. UKAS recognized and NIST traceable. Available at Peabody, MA and Ostfildern, Germany facilities. For laboratories and manufacturers worldwide.
• Instrumentation & Sensor Light Sources Specialty light sources including visible, IR, tungsten halogen, neon, mini, LED lamps, reflector lamps, UV LEDs, and lamp holders for instrumentation and sensor applications. For OEMs, sensor manufacturers, and laboratory integrators.
• LED Lighting Innovations Custom and off-the-shelf LED lighting solutions and retrofits. For commercial, industrial, and OEM customers requiring tailored lighting products.
• Radiometer and Spectroradiometer Rentals Rental program offering radiometers and spectroradiometers available for short-term use through the eStore. For customers needing flexible, temporary access to measurement equipment without outright purchase.

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Labsphere, Inc.coreStrategic or Co-development Partner · 1 January 2024International Light Technologies has become a division of Labsphere, Inc., creating a strategic alignment that brings together over 90 years of combined expertise. The merger strengthens their position as industry leaders in illuminant sources, measurement equipment, calibration capabilities, and reflectance materials.

Scale indicators2 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Labsphere, Inc. ILT's parent since 2024 merger; Labsphere supplies integrating spheres, reflectance standards, and illuminant sources that complement ILT's light meters and calibration services.
• StellarNet: Specialized manufacturer of portable spectrometers and light measurement systems with calibration services, directly competing in the same SMB and lab customer niche as ILT960 series.
• Ocean Insight (formerly Ocean Optics): Provider of modular spectrometers, light sources, and fiber-optic sensing for UV-VIS-NIR applications; competes head-to-head with ILT960 series in research and OEM channels.
• Gigahertz-Optik: German specialist in light measurement instruments, UV radiometers, and calibration services; very close competitor to ILT in UVGI and LED metrology globally.
• Gamma Scientific: Manufacturer of light measurement instrumentation including spectroradiometers and photometers with NIST-traceable calibration; directly comparable in calibration-led offering.

Broad incumbents

• Konica Minolta Sensing: Industrial conglomerate offering spectroradiometers, lux meters, and display measurement instruments that directly compete with ILT's meters and spectrometers in lighting and display QA.
• Hamamatsu Photonics: Large Japanese photonics company making optical sensors, spectrometers, and light sources that compete with ILT's spectrometer and detector product lines.
• Thorlabs: Broad catalog photonics supplier of optical sensors, spectrometers, LEDs, and calibration sources; overlaps with ILT instrumentation and specialty light source portfolios.

Emerging players

• UPRtek: Taiwanese maker of handheld spectral light meters for LED and horticultural lighting QA; competes with ILT's portable spectrometers in the LED lighting QA niche.

Others

• Edmund Optics: Major optics distributor/manufacturer of optical components, sensors, and light sources; comparable in enabling optical measurement and OEM supply ecosystem for ILT-type customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key highlights7 records

Customer concentration

• Xx.com/intl_lighttech
• LinkedInlinkedin.com/company/international-light-technologies

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about International Light Technologies