CIE A-α Goniophotometer for Automotive and Signal Lamps

LSG-1950 is a CIE A-α compliant goniophotometer designed for precise photometric measurement of transportation industry lighting systems, including automotive signal lamps, traffic control devices, and specialized vehicular lighting for automotive, railway, maritime, and aerospace applications. The instrument employs a stationary photometer detector oriented toward the test specimen while the specimen rotates about both horizontal and vertical axes, enabling comprehensive measurement of luminous intensity distribution and illuminance values.

Compliance Standards: ECE-R65 “Special Warning Lights,” FMVSS108 “Lamps, Reflective Devices, and Associated Equipment,” IEC 60662 (GB 13954) “High-Pressure Sodium Vapour Lamps,” GB 25991 “Automotive Headlamps with LED Light Sources and/or LED Modules”

Technical Specifications:

• A-α axis rotation range: -180° to +180°
• Angular positioning accuracy: 0.01° (LSG-1950)
• Angular resolution: 0.001°
• Photometer detector: Constant temperature Class A photodetector (Class L optional)
• Measurement accuracy: ≤2% (under standard illuminant conditions)
• Stray light rejection: <0.1%
• Software compatibility: Windows 7, 8, 10, and 11 operating systems with multilingual interface

LSG-1950 Configuration Options:

Option 1: PM400F Flashlight Photometer Integration
When integrated with the LSG-1950 goniophotometer, the PM400F enables compliance testing according to the following standards:

• MH/T 6012-1999 – Aviation Obstruction Light
• HB 6490-1991 – General Specifications for Aircraft Navigation Light and Anti-collision Light
• JTT 761—2022 – General Technical Conditions for Aids to Navigation Light
• ECE R65 – Uniform Provisions Concerning The Approval of Special Warning Lamps for Motor Vehicles
• SAE J595 – Directional Flashing Optical Warning Devices for Authorized Emergency, Maintenance, and Service Vehicles
• SAE J845 – Optical Warning Devices for Authorized Emergency, Maintenance, and Service Vehicles
• JJF 1330-2011 – Calibration Specification for Transient Effective Luminous Intensity Meter

Option 2: LS-RF200 Retroreflective Material Photometric Testing System Integration
The LS-RF200 system, when configured with the LSG-1950 goniophotometer…