
LM-79 Moving Detector Goniophotometer (Mirror Type C)
LSG-6000

High Precision Rotation Luminaire Goniophotometer
LSG-1890B

High Precision Rotation Luminaire Goniospectroradiometer
LSG-1890BCCD

Goniophotometer for Automotive and Signal Lamps
LSG-1950

Goniophotometer for Traffic Signal Lamps
LSG-1950S

Compact Goniophotometer
LSG-1200A

Near Field Moving Detector Goniophotometer
LSG-1900B





















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Introduction
LED light testers are crucial in evaluating the performance and quality of LED products. Among these testers, the LISUN LM-79 Moving Detector Goniophotometer stands out due to its advanced capabilities. This article explores the working principles, key features, and applications of LED light testers, particularly focusing on the LISUN LM-79 model.
Importance of LED Light Testing
LED light testers are essential for measuring various photometric, colorimetric, and electrical parameters of LED lights, ensuring compliance with international standards such as IES LM-79, CIE, and IEC. These tests help manufacturers maintain product quality and performance consistency, which is critical in applications like lighting design, safety, and energy efficiency.
Key Parameters Measured by LED Light Testers
LED light testers like the LISUN LM-79 measure the following parameters:
| Parameter | Description |
| Luminous Intensity | Measures the brightness emitted in a particular direction. |
| Luminous Flux | Total visible light output from the LED light. |
| Color Temperature (CCT) | Indicates the hue and tone of the light (warm to cool). |
| Color Rendering Index (CRI) | Measures the accuracy of color appearance under the light. |
| Beam Angle | The angle at which light is emitted from the LED. |
| Power Consumption | Energy usage of the LED light source. |
Overview of LISUN LM-79 Moving Detector Goniophotometer
The LISUN LM-79 Goniophotometer is designed to test LED lamps and luminaires according to LM-79 and other international standards. It offers precise measurement of luminous flux, intensity distribution, and chromaticity.
Working Principle
The LISUN LM-79 Goniophotometer operates using a moving detector and a mirror system. It measures light by rotating the light source while the detector remains fixed, which allows for highly accurate measurements of luminous intensity distribution.

Features of LISUN LM-79
• High Precision: Utilizes a Class C goniophotometer system for accurate photometric measurements.
• Wide Measurement Range: Capable of testing a variety of LED products, from small lamps to large luminaires.
• Integrated Control Software: Allows for automatic data acquisition, processing, and reporting, enhancing efficiency.
• Compliance with Standards: Meets requirements of IES LM-79-19, CIE, and other global standards.
Applications of LED Light Testers
LED light testers are widely used in R&D laboratories, production quality control, and certification processes. They are essential for:
• Product Development: Ensuring new LED designs meet performance specifications.
• Quality Assurance: Routine testing of LED lights to maintain consistency.
• Certification Testing: Verifying compliance with regulatory standards.
Case Study: Enhancing LED Performance with LISUN LM-79
An LED manufacturer integrated the LISUN LM-79 Goniophotometer into their quality control process. By using this tester, the company could significantly reduce product defects and improve light consistency, leading to higher customer satisfaction and better market positioning.
Conclusion
The LISUN LM-79 Moving Detector Goniophotometer represents the pinnacle of LED light testing technology. Its ability to provide accurate, comprehensive data on light performance makes it an invaluable tool for manufacturers committed to delivering high-quality LED products. With the ongoing evolution of lighting technology, investing in advanced LED light testers like the LISUN LM-79 is essential for staying ahead in the competitive lighting market.
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