Accredited Laboratory

Photometric Testing & Light Measurement

Precise optical performance evaluation for engineering firms and lighting manufacturers in Southern California.

NEW ANNOUNCEMENT

Authorized Photo Research Service Lab

We are now an officially approved laboratory for Photo Research instruments.

Ensuring your luminance and color measurement systems remain reliable and aligned with documented requirements.

our expertise

Introduction to Photometry

Photometry is the science of measuring light with an emphasis on intensity and brightness as perceived by the human eye. Unlike purely electrical or radiometric measurements, photometry focuses on how light performs in real world human environments.

  • Read More

    K Light Laboratories, Corp. provides independent photometric testing, calibration, and optical performance evaluation for organizations that depend on precise and repeatable light measurements. Located in Irwindale, California, our laboratory supports clients throughout the United States who require dependable photometric data for product development.


    Commitment to Quality: We are A2LA certified and perform calibration in accordance with ISO 17025 requirements.

Our Services

Traffic signal with illuminated green, yellow, and red lights.

LED Intensity & Chromaticity

Testing for traffic signals and safety lighting using controlled measurement systems (Integrating Spheres) to capture accurate flux and color performance.

Digital lux meter showing a display of

Light Meter Calibration

Traceable calibration services for light meters and illuminance meters to correct sensor aging and ensure reliable field measurements.

A dark room with a track-like setup; red, triangular lights project shadows onto the wall.

Photometer Repair

Service for photometers and colorimeters to extend instrument life. We also repair and sell parts for GraLab Digital Timers.

A gray mechanical timer with a white face, black hand, and red markings. It has a power cord and a black dial.

GraLab Digital Timer (Model 451)

Featured Product

GraLab Digital Timers: Sales & Repair

We support customers who rely on GraLab timers in applications such as darkroom timing, sports timing, and general purpose timing environments. Access to correct replacement parts and knowledgeable service helps extend equipment usability.

Model 451

Repair Services

Replacement Parts

Who we work with

Industries and Organizations We Support

K Light Laboratories works with lighting manufacturers, engineering firms, product developers, and organizations that require accurate photometric data. Clients often engage our services when internal measurements must be verified, when independent testing is required, or when calibration support is needed to maintain quality systems.

Our laboratory is particularly well suited for organizations that value technical clarity, documented procedures, and long term measurement consistency.

Black shield with white checkmark.

Verified Feedback Only

We do not publish or generate artificial testimonials. Verified customer feedback can be added if and when it is provided by the client.

Black lightbulb emitting rays.

Lighting Manufacturers

Verifying production quality and regulatory compliance.

Black icon of a hard hat with a gear on top, representing engineering or construction.

Engineering Firms

Verifying production quality and regulatory compliance.

Black and white icon of a circuit board.

Lighting Manufacturers

Verifying production quality and regulatory compliance.

Black circle with a white check mark.

Engineering Firms

Verifying production quality and regulatory compliance.