Introduction Luminous flux is a fundamental photometric quantity that measures the total amount of visible light emitted by a light source over time. It serves as a cornerstone in the fields of lighting engineering, optical design, and photometry research. As the demand for energy-efficient lighting solutions continues to rise, accurate measurement of luminous flux has become increasingly critical...
Introduction The rapid evolution of LED lighting technology has revolutionized the lighting industry, making LED luminaires the preferred choice for residential, commercial, and industrial applications due to their high efficiency, energy conservation, and extended lifespan. However, one persistent challenge in LED lighting is flicker, a phenomenon that significantly impacts the quality of LED lum...
Introduction The rapid advancement of lighting technology has underscored the critical role of efficient and reliable lighting test equipment in the illumination industry. The LPCE-2 (LMS-9000) High-Precision Spectroradiometer and Integrating Sphere Testing System, developed by LISUN, Ltd., stands out as an advanced lighting test equipment solution. This system is widely utilized for testing a var...
Introduction The widespread adoption of LED lighting technology has transformed the lighting industry, establishing LED luminaires as the preferred choice for modern illumination due to their exceptional efficiency, energy savings, and extended lifespan. However, LED lumen maintenance, a critical indicator of long-term performance and reliability, remains a focal point for assessing LED quality. L...
Introduction As LED lighting technology continues to advance rapidly, the demand for precise performance testing of lighting products has grown significantly, particularly for key metrics such as luminous flux, colorimetric parameters, and luminous efficacy. The LPCE-2 (LMS-9000) LED CCD Rapid Photometric and Electrical Comprehensive Testing System, developed by LISUN, is a state-of-the-art testin...
Introduction In the realm of color measurement and material analysis, precision and accuracy are paramount. Among the various instruments designed for these purposes, sphere spectrophotometers stand out due to their unique ability to measure color in a way that closely mimics human vision. This article will delve into the functionalities, applications, and advantages of using sphere spectrophotome...
In recent years, with the growing energy crisis and the increasing awareness of environmental protection, LED bulbs have become a popular choice as energy-efficient lighting products. However, due to the presence of various brands and models of LED bulbs in the market, consumers often find it difficult to judge their quality and performance when making a purchase. Therefore, it is crucial to estab...
With the development of technology, LED lighting has been widely used in the field of illumination. In order to ensure the quality and performance of LED lighting, it is necessary to test LED lighting. This article will introduce large and small integrating spheres and the integrating sphere testing system as an efficient and accurate method for testing LED lighting. 1. Large integrating sphere A ...
As an emerging light source, LED is very different from the traditional light source in terms of its own structure and luminous characteristics. Due to the self -absorption effect of the LED itself and the measurement error brought by the internal shield of the integrating sphere, the LED’s optical flux error is measured with a large amount of optical flux errors. The position and gear scree...
Introduction Spectroradiometer integrating sphere systems are now standard equipment for researchers working in the area of light measurement and characterization. These cutting-edge devices are vital for determining the efficiency, reliability, and uniformity of lighting in a wide range of applications. Research, product development, and quality control are just some of the many areas that benefi...
Lumen is a unit of measurement for the total amount of visible light emitted by a light source. It is an important parameter in lighting design and evaluation, as it reflects the brightness and effectiveness of a lighting system. To accurately measure lumen output, a spectroradiometer system with an integrating sphere is commonly used. In this technical article, we will discuss how to test lumen b...
Integrating sphere, also known as a LED Measurement System, is a hollow spherical shell. Integrating spheres are usually made of metal materials and have an inner wall coated with a white high diffuse reflectance layer (typically magnesium oxide or barium sulfate), ensuring uniform diffuse reflection at every point on the inner wall. There are also integrating spheres made of high reflectance pol...
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