Light Intensity Measurement Using LISUN LSG-6000 LM-79 Moving Detector Goniophotometer

Abstract: The measurement of light intensity is crucial in the development and evaluation of lighting products, particularly in meeting international standards for photometric testing. This paper explores the LISUN LSG-6000 LM-79 Moving Detector Goniophotometer (Mirror Type C), an advanced system designed to provide accurate and reliable photometric data. The instrument fully complies with the requirements set by LM-79-19, EN13032-1, CIE S025, SASO2902, IS16106, and GB for light intensity measurement. This article reviews the working principles, applications, and advantages of the LSG-6000, emphasizing its role in obtaining precise light intensity distribution data across different lighting conditions.

Introduction
In the field of lighting, light intensity is a critical parameter that determines the performance of lighting fixtures. Accurate light intensity measurement is necessary to ensure compliance with international standards and to meet the diverse requirements of various applications. The LISUN LSG-6000 LM-79 Moving Detector Goniophotometer is an advanced tool designed to measure light intensity distribution with high accuracy. It fully complies with global standards such as LM-79-19, CIE S025, and others, making it a valuable tool for lighting manufacturers and testing laboratories.

Light Intensity and Its Importance
Light intensity, often referred to as luminous flux, is a fundamental parameter in photometry. It quantifies the amount of light emitted by a source in a given direction. Accurate measurement of light intensity distribution is essential for assessing the performance of lighting fixtures in real-world conditions. Standards like LM-79-19 provide guidelines for evaluating parameters such as luminous flux, light intensity distribution, and color characteristics.

LISUN LSG-6000 LM-79 Moving Detector Goniophotometer
The LISUN LSG-6000 LM-79 Moving Detector Goniophotometer (Mirror Type C) is an advanced photometric testing device that is specifically designed to measure light intensity and other optical parameters of lighting fixtures. It operates based on a rotating head and detector arrangement, which allows it to capture data from all angles, providing a comprehensive view of the light distribution of the test sample.

 Features of the LSG-6000 LM-79 Moving Detector Goniophotometer
• Full-Space Measurement: The LSG-6000 LM-79 Moving Detector Goniophotometer is capable of measuring light intensity across a full 360-degree spatial distribution.
• Compliance with Standards: It meets the requirements set by LM-79-19, EN13032-1, and other international standards, ensuring the accuracy and reliability of the data collected.
• Mirror Type C Design: This design improves measurement precision by minimizing errors related to detector positioning.
• High-Speed Data Collection: The system is equipped with a high-speed rotating head that can measure light intensity at various angles, providing detailed distribution data in a short time.

Working Principle of the LSG-6000 LM-79 Moving Detector Goniophotometer
The LSG-6000 LM-79 Moving Detector Goniophotometer operates by positioning the light source in the center of a goniometer that can rotate both horizontally and vertically. The detector, which is positioned on a movable platform, captures light from different directions as the goniometer rotates. The light intensity is measured at various angular positions, and the data is then used to generate a full light distribution curve.

The system utilizes a mirror type C arrangement, which enhances the accuracy of light measurement by minimizing the potential errors associated with detector orientation and alignment. The data collected from the goniophotometer is processed to produce a comprehensive light intensity distribution map, which is essential for analyzing the performance of lighting fixtures.

Compliance with International Standards
The LISUN LSG-6000 LM-79 Moving Detector Goniophotometer fully meets the requirements of several important standards for photometric testing, including:
• LM-79-19: This standard specifies the testing procedures for the photometric performance of solid-state lighting products, including light intensity measurement.
• EN13032-1: This European standard provides guidelines for the measurement of the luminous flux and luminous intensity distribution of lighting devices.
• CIE S025: This standard, published by the International Commission on Illumination, outlines the measurement methods for light distribution and intensity.
• SASO2902: This standard governs the testing of lighting products in Saudi Arabia, ensuring that they meet local requirements for light intensity and distribution.
• IS16106: The Indian standard for photometric testing of lighting fixtures, which the LSG-6000 adheres to, provides guidelines for accurate light intensity measurement.
• GB Standards: The LSG-6000 also complies with various national standards in China, including GB/T 25188 for photometric testing.

Applications of the LSG-6000 LM-79 Moving Detector Goniophotometer
The LSG-6000 LM-79 Moving Detector Goniophotometer has wide-ranging applications in various industries:
• Lighting Manufacturers: It is used to test the photometric performance of LED lamps, light bulbs, and other lighting fixtures to ensure they meet industry standards.
• Automotive Lighting: The system is used to evaluate the light intensity distribution of automotive headlights and other lighting components, ensuring they provide optimal visibility while complying with regulations.
• Research and Development: R&D departments use the LSG-6000 for testing new lighting technologies, analyzing light distribution patterns, and improving product performance.
• Certification Laboratories: Third-party testing labs use the LSG-6000 to certify that lighting products meet the required standards for light intensity and distribution.

Advantages of the LSG-6000 LM-79 Moving Detector Goniophotometer
• Accuracy: The LISUN LSG-6000 LM-79 Moving Detector Goniophotometer provides highly accurate measurements of light intensity, thanks to its advanced design and precise optical components.
• Speed: With its high-speed data collection system, the goniophotometer can generate detailed light intensity distribution data in a short amount of time.
• Comprehensive Data: The system provides full-space measurement, offering a complete analysis of the light intensity distribution of the tested product.
• Ease of Use: The user-friendly interface of the LSG-6000 makes it easy for operators to set up and execute measurements, even for complex lighting products.

Example of Light Intensity Data
The following table illustrates an example of light intensity data collected from a lighting fixture using the LISUN LSG-6000 LM-79 Moving Detector Goniophotometer.

Angle (°)	Light Intensity (cd)
0	550
15	540
30	510
45	480
60	450
75	420
90	400

This data represents the light intensity measured at different angles around the lighting fixture. The values are indicative of the light output and distribution, which can be used to assess the overall performance of the product.

Conclusion
The LISUN LSG-6000 LM-79 Moving Detector Goniophotometer is an advanced and reliable tool for measuring light intensity distribution in accordance with international standards. Its ability to provide full-space measurement with high accuracy and speed makes it a vital asset for lighting manufacturers, testing laboratories, and research institutions. By ensuring compliance with standards such as LM-79-19, EN13032-1, and CIE S025, the LSG-6000 plays a crucial role in the development and certification of high-performance lighting products.

Tags：LSG-6000