About ILT

For over fifty years International Light Technologies has been developing products and solutions that meet a broad range of needs and solve a variety of challenges.  ILT combines technical lighting and light measurement expertise to provide products and services that shine.

International Light Technologies was formed when Gilway Technical Lamp merged with International Light.  Gilway and International Light have long and proud reputations for delivering exemplary customer service, on-time delivery, and technical expertise. Formed in 1969, Gilway Technical Lamp has provided customers with off-the-shelf and customized solutions for a full spectrum of light sources.  Since 1965 International Light has been solving the inherent difficulties in light measurement through the design and manufacture of a wide range of light measuring instruments, including the most accurate light meters on the market.

ILT’s headquarters, R&D efforts, certified state-of-the-art testing and calibration lab, warehousing and much of its manufacturing are located in our Peabody Massachusetts facility, just 15 miles north of Boston.


Why should you partner with ILT to overcome your latest challenge?  Innovating and problem-solving are what we do.  We have over a half-century of experience working with companies of all shapes and sizes, and across a broad range of industries, to deliver products and solutions that tackle the toughest obstacles.   ILT employs a team of highly skilled experts in the areas of electrical, optical, mechanical, quality and manufacturing engineering.  Our staff will work with you to ensure you get a solution – whether off-the-shelf or tailor-made – that is right for you.  In today’s tumultuous environment where the big guys are struggling to keep up and many entrants come and go, ILT is continuing to deliver products and solutions that solve problems, are designed and manufactured to the highest quality standards, and can be brought to market quickly and cost effectively.

The Problems We Solve

ILT has been developing solutions for lighting and light measurement for more than 50 years.  We have an extensive catalog of off-the-shelf options, but the real benefit we bring to our customers is our ability to develop customized solutions that meet your specific requirements.  The following are our core areas of competence.  Click on the links to learn more:

Light Measurement Systems – ILT has pioneered highly accurate, industry leading light measurement systems for a broad range of markets and applications.    

Lamp and Light Source Solutions – ILT offers a broad range of off-the-shelf and customized lamp and light source solutions including LED, Ultra Violet (UV), Infrared (IR), specialty replacement lamps, and power supplies.

LED Signage and Accent Lighting Solutions – ILT has a comprehensive suite of LED modules and flexible strips for signage applications including channel letters, sign cabinets, retrofits, and architectural accent and cove lighting. In addition to our stock products, ILT can customize a solution to meet your specific needs.

LED Lighting Solutions – ILT designs and manufactures LED lighting solutions for freezer and refrigeration display cases, open case lighting, gas canopy fixtures and retrofit kits, under-cabinet lighting, task lighting, retrofits and more.

Custom Products and Solutions – When an off-the-shelf product just won’t do, or when customization is required, our team will work with you to develop the solution that’s right for you.  Our experts can help you meet your design goals and provide technical expertise.

Our Commitment to Our Customers

At ILT we are committed to providing our customers with the highest quality products, prompt and courteous customer service, and world-class technical support.  We realize that much of what we make ends up as part of a solution for our customers’ customers.  When you partner with ILT you can be confident that we will stand by our products and work through any issues to resolution. 

Our Commitment to Quality

ILT is committed to delivering the highest quality products and services to our customers.  Our employees use the latest tools to ensure all of our products are designed and manufactured to meet our stringent requirements for durability, reliability, efficacy and cost efficiency. 

To ensure that this commitment is understood, implemented and maintained, all of our employees are familiar with our policy and understand their requirements within the Quality System through training and access to our Quality Manual. We are an ISO9001:2008 certified organization for quality management and all of our products are backed by a warranty.

ILT is an ISO17025:2005 Accredited lab.  This certification allows us to calibrate ILT-branded and non-ILT branded light meters and spectroradiometers.  Visit our Calibrations page here to see all of our calibration services.

Our Commitment to the Environment

ILT is committed to designing and manufacturing products that are environmentally friendly and implementing professional practices that are environmentally sustainable.  The Directive 2002/95/EC on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS) was issued in February 2003. The RoHS directive restricts the use of the following substances in products sold into European markets from July 1, 2006:

  • Lead
  • Mercury
  • Cadmium
  • Hexavalent Chromium
  • Polybrominated Biphenyls (PBB)
  • Polybrominated Diphenyl Ethers (PBDE)


Light Sources Products:

All of our products are now fully compliant.

Light Measurement Systems Products:

Because our products are used as measurement devices there is an exemption on RoHS compliance. However, we are developing all our new products to be compliant, and retro designing our older products on an ongoing basis. We expect to have all our products fully compliant in the next few years.

If you have a question or a concern about a certain product please contact our RoHS Department for status on that product. More information on RoHS is available from the official RoHS website.

Our Commitment to Global Corporate Citizenship 

Conflict Minerals Declaration

The Dodd-Frank Wall Street Reform and Consumer Protection Act was signed into U.S. federal law on July 21, 2010. Section 1502 of the Act defines the reporting obligations for companies that are publicly traded in the US and are governed by the Securities & Exchange Commission (SEC). Section 1502 requires companies that make products for which 3TG minerals (tantalum, tin, tungsten and gold) are necessary to the functionality or production of that product to assess their supply chains and publicly report on the source of these minerals if they are sourced from the Democratic Republic of Congo (DRC) or adjoining country or if they are from recycled or scrap sources.

ILT is a privately held company and thereby not required to file reports with the SEC in compliance with Section 1502 of the Dodd-Frank Act. While we are exempt from this requirement, we do manufacture products for companies that are bound by the SEC requirements regarding Conflict Minerals. Therefore, we are requiring that our suppliers be in compliance with the Dodd-Frank Act concerning the Conflict Minerals Tungsten, Tantalum, Gold, and Tin. Evidence of the origins of sources of any use in any amount of these “Conflict Minerals” in our supplier's product shipped to ILT must be provided.

This inquiry was reasonably designed and was conducted in good faith with an effort to obtain reliable representations indicating smelter or refiner facilities at which its conflict minerals were processed and that those conflict minerals did not originate in the DRC or adjoining country or come from recycled or scrap suppliers. This document declares that some of International Light Technologies products contain one or more conflict minerals and that these minerals are necessary to the functionality of the products manufactured. Based upon the RCOI conducted by ILT, this document declares that all conflict minerals used in ILT products do not originate in the DRC or an adjoining country or come from recycled or scrap supplier. This document certifies that all ILT products are declared “DRC conflict free”. ILT will also request this information from our suppliers annually to assure compliance to this declaration.