Utilizing the Airfield Lighting Goniophotometer for Accurate Measurement of Traffic Industry Lighting Equipment: A Case Study of LISUN LSG-1950 Goniophotometer for Automotive and Signal Lamps

Introduction
In the transportation industry, the measurement of lighting equipment plays a crucial role in ensuring the safety and efficiency of both ground and airborne transportation. This article discusses the significance of accurate light measurement in the field of traffic and airfield lighting and examines the use of the airfield lighting goniophotometer as a vital tool in this process. The focus will be on the LISUN LSG-1950 Goniophotometer for Automotive and Signal Lamps, a cutting-edge solution for evaluating the photometric performance of automotive and aviation lighting systems. By the end of this paper, we will demonstrate how this equipment is crucial for traffic industry lighting applications, improving visibility, safety, and compliance with regulatory standards.

1. Overview of Lighting Measurement in the Transportation Industry
Lighting systems, particularly for vehicles and airfields, must meet stringent standards to ensure optimal visibility under various environmental conditions. For airfields, this means ensuring that runway and taxiway lights are visible from great distances, while in automotive applications, it ensures that vehicle headlamps provide adequate road illumination. The accurate measurement of light output, distribution, and intensity is essential for both safety and regulatory compliance.

To achieve these measurements, tools like the airfield lighting goniophotometer are used. These instruments enable precise measurements of luminous intensity, photometric angles, and beam distribution, which are critical for the correct setup and calibration of lighting systems.

2. Airfield Lighting Goniophotometer: Principle and Function
The airfield lighting goniophotometer is designed specifically to measure the photometric characteristics of lighting sources used in critical infrastructure like airports and highways. The LISUN LSG-1950 Goniophotometer for Automotive and Signal Lamps serves as a prime example of such technology. This instrument uses a moving mirror and a light sensor to capture the full photometric characteristics of lamps by rotating the light source within a spherical or hemispherical setup.

Key features of the LISUN LSG-1950 include:

• High Accuracy: With a measurement accuracy of up to 1% in luminous intensity.
• Wide Measurement Range: Supports both high and low beam configurations for automotive lamps, as well as runway and taxiway lights for airfields.
• Comprehensive Data Output: Provides full angular distribution data and allows the plotting of light distribution curves.

3. Key Features and Specifications of the LISUN LSG-1950 Goniophotometer
The LISUN LSG-1950 Goniophotometer is tailored for measuring automotive and airfield lighting systems, offering high precision and a range of measurement features. Below are some of its key specifications:

Specification	LISUN LSG-1950 Goniophotometer
Measuring Range	0.5° to 180° (horizontal and vertical)
Accuracy	±1% luminous intensity
Power Supply	AC 220V ± 10% / 50Hz
Measurement Type	Photometric and colorimetric measurements
Standard Compliance	IES, CIE, SAE standards
Data Output	Luminous intensity, beam distribution, and angle data
Integration Time	Adjustable from 0.1s to 100s
Software Interface	LISUN proprietary software for analysis

These specifications make it a highly effective tool for both automotive and airfield lighting, offering unparalleled versatility in the transportation industry.

4. Applications of the LISUN LSG-1950 in the Traffic Industry

4.1 Airfield Lighting

In airfield environments, lighting is crucial for the safe navigation of aircraft. The LISUN LSG-1950 allows for precise measurement of runway edge lights, taxiway lights, and approach lights. These lights must meet specific luminous intensity standards and beam distribution criteria to ensure pilots can clearly see their path during takeoff, landing, and taxiing.

By using the goniophotometer, airports can:

• Ensure Compliance: The LISUN LSG-1950 helps ensure that airfield lighting complies with international regulations like ICAO and FAA standards.
• Optimize Light Distribution: By measuring the distribution of light, airfield lighting can be adjusted to minimize glare and improve visibility for pilots.

4.2 Automotive Lighting

In the automotive industry, vehicle headlamps and signal lights need to be optimized for safety. The goniophotometer’s ability to measure beam angles and luminous intensity ensures that vehicle lighting systems conform to standards such as ECE R112, SAE J1383, and FMVSS 108.

Through precise measurements, manufacturers can:

• Improve Driver Visibility: The LISUN LSG-1950 ensures that automotive lighting meets the required luminous intensity and distribution standards, reducing accidents caused by poor visibility.
• Enhance Lamp Performance: Accurate measurement allows for the fine-tuning of lamp designs to optimize their output, providing a better driving experience.

5. Case Study: Utilizing the LISUN LSG-1950 in an Airport Lighting System
A case study on an airport in China demonstrates the application of the LISUN LSG-1950 in evaluating airfield lighting systems. The goniophotometer was used to measure the luminous intensity and beam distribution of taxiway and runway edge lights. These lights were measured at various angles to ensure they met the required visibility distance and intensity.

Data Results:

Light Type	Intensity (cd)	Beam Angle (°)	Distance Visible (m)
Runway Edge Light	3,500 cd	15°	2000m
Taxiway Edge Light	1,200 cd	20°	1500m
Approach Lighting	6,000 cd	10°	2500m

The measurements confirmed that the airfield lighting system met the required standards, improving the airport’s safety by providing optimal visibility under various weather conditions.

6. Conclusion
The accurate measurement of lighting equipment in the transportation industry is vital for safety, regulatory compliance, and operational efficiency. The airfield lighting goniophotometer, particularly the LISUN LSG-1950 Goniophotometer for Automotive and Signal Lamps, provides a comprehensive solution for this purpose. By offering high-precision measurements of luminous intensity and beam distribution, this tool ensures that lighting systems in both automotive and airfield applications are optimized for maximum performance.

The continuous advancements in lighting measurement technologies like the LISUN LSG-1950 will play an integral role in enhancing the safety, visibility, and functionality of lighting systems across the transportation industry, benefiting both ground vehicles and aircraft alike.

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