Product No: LSG-1950S
LSG-1950S Goniophotometer for Traffic Signal Lamps (Economical Model) employs the CIE B-β measurement geometry. 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-floor testing of automotive lighting, specialized warning lights, traffic signals, and rail transit lighting. As a cost-effective version of the LSG-1950, the LSG-1950S features a stable angle encoder and a standard photometric probe; it comes with professional testing software that includes a built-in database of automotive lighting standards, offering a high-value solution widely used by signal light manufacturers and small-to-medium-sized testing laboratories.
Specification:
| Measurement Method | Type‑B(CIE B‑β) | |
| Luminaire Rotation Range | Vertical axis: -180°~+180°; Horizontal axis: -90°~+90° | |
| Scanning Angle Positioning Accuracy | Up to 0.1° | |
| Illuminance Measurement Range | 0.0001 lx~200k lx | |
| Photometric Probe Class | CIE Class A | |
| System Stray Light | ≤0.2% | |
| Synchronous Measurement of Electrical Parameters |
Voltage, current, power, power factor | |
| Generate Report | Comprehensive optoelectronic test reports for vehicle lighting and signal lamps (Chinese/English), including outputs such as isocandela diagrams. | |
| System Configuration Components | Please click here for details | |
| Spatial Color Measurement | LSG-1950SCCD: Test the color coordinates, correlated color temperature, and color rendering index of the luminaire at each angle, calculate the spatial average chromaticity and spatial color non-uniformity Δu’v’, and evaluate the color consistency of the LED luminaire under different viewing angles. | |
| Max. Size of EUT | 600*600 mm、35kg | |
Optional Configuration: The LSG-1950 goniophotometer can work with LISUN PM400F Flashlight Photometer , can be used for transient effective luminous intensity testing of flashing warning lights, fully meeting the transient photometry testing requirements of ECE-R65 and SAE J595 for land-based flashing warning light sources., please click to view the test report sample of PM400F Flashlight Photometer

PM400F Flashlight Photometer
LISUN LSG-1950S Goniophotometer for Traffic Signal Lamps – After-sales Frequently Asked Questions (FAQ)
LISUN LSG-1950S Goniophotometer for Traffic 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.
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