Goniophotometer for Automotive and Signal Lamps

LSG-1950 Goniophotometer for Automotive and Signal Lamps utilizes the CIE A-α measurement architecture. Based on a testing principle involving dual-axis sample rotation and a fixed photometric probe, it enables the acquisition of key photometric parameters such as luminous intensity distribution and illuminance. This equipment is suitable for R&D validation and factory inspection of automotive lighting, specialized warning lights, traffic signals, and rail transit lighting. Equipped with high-precision angle encoders and constant-temperature photometric probes, the LSG-1950 features professional testing software with a built-in database of automotive lighting standards. It serves a wide range of clients—including third-party testing agencies, vehicle manufacturers, and signal light producers—and meets testing requirements for domestic, European, and American traffic lighting regulations.

Standards:

Specifications:

LSG-1950 Test Size And Weight

Optional Configuration 1: LISUN PM400F Flashlight Photometer. This instrument is designed for testing the transient effective luminous intensity of flashing warning lights; it fully complies with ECE-R65 and SAE J595 testing requirements for the transient photometry of flashing warning light sources and can generate corresponding test reports. 

PM400F_Flashlight Photometer

Optional Configuration 2: The LISUN LS-RF200 Retroreflective Material Photometric Performance Test System. This system primarily consists of a collimated Standard Illuminant A source, a low-light illuminance meter, a height adjustment mechanism, and a control unit. Designed for use in conjunction with the LISUN LSG-1950 Goniophotometer System, it enables the testing of the photometric performance of various retroreflectors and materials—such as raised pavement markers, breakdown vehicle warning signs, road marking paints, and delineators—fully complying with relevant domestic and international standards.

LS-RF200 Retroreflective Material Photometric Testing System and LSG-1950 Goniophotometers

How to test Automotive LED Headlights?
According to IEC, EN, ECE, SAE, FMVSS108 federal regulations and relevant test standards, automotive LED lights is required to test optical characteristics, including the spatial distribution and total flux of luminous intensity (cd), spectral characteristics, chromaticity coordinates, dominant wavelength, luminance (cd / m2), color temperature etc parameters. 

To obtain these data, we mainly use goniophotometer to test. According to CIE and FMVSS108 standards, LISUN recommend LSG-1950/LSG-1950S CIE A-α Goniophotometer. It mainly for measuring transportation industry lighting, such as traffic lights, buses, trains, ships and aerospace equipment lamps. 

What are optical test parameters and standards of Automobile Headlights?
With the rapid development of the automobile industry and the improvement of driving speed, the automobile headlights are very important to ensure driving safety, the standards of automobile headlights occupies a very important position in automobile standards. At present, the standards applicable to automotive headlight products include ECE R112, SAE J1383, FMVSS108, GB 4599-2007, GB21259-2007, GB25991-2010, etc. These standards are applicable to automobile headlights with different light sources, but they also made uniform regulations for the entire lamp technical requirements, such as general requirements, color, luminous intensity distribution and test methods, and stability of luminous intensity distribution, etc. 

LISUN LSG-1950 Goniophotometer for Automotive and Signal Lamps – After-sales Frequently Asked Questions (FAQ)
LISUN LSG-1950 Goniophotometer for Automotive and Signal Lamps were in the market for more than 10 years, LISUN engineers service team already summary the most of the After Sales Questions and Answers in the above link. Please read it carefuly, you can solve the most of the problems by yourself if you have some questions while using the instruments. LISUN will be continue to update this pages and more FAQ can be found in this topic link.

Steve Gibbons

We have the LSG-1800BCCD gonio photometer. LISUN is professional and the photometer is nice. LISUN engineer came and installed for us. Now everything is functional. We are glad to cooperate with LISUN.