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
VAD Fire Alarm Visual Alert Device Goniophotometer
LSG-1930
Compact Goniophotometer
LSG-1200A
LED Goniophotometer
LSG-1100
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Abstract: To accurately measure 3D photometric parameters of various lighting products, this paper takes LISUN LSG-6000 vertical rotating probe goniophotometer as the research object based on the goniophotometer working principle. It analyzes the full-space scanning measurement mechanism under C-γ coordinate system, elaborates core advantages including automatic generation of 3D luminous intensit...
Abstract Luminous intensity measuring device is a core part of optical performance testing for light sources and luminaires, and its data directly affects the light distribution effect, user experience and compliance level of lighting products. Adopting high-precision mechanical structure and professional optical detection modules, the rotary probe vertical goniophotometer is capable of conducting...
Abstract: In the fields of lighting engineering and LED light source R&D, luminous intensity distribution is a core indicator that characterizes the spatial light distribution performance of luminaires and determines lighting effects and energy‑efficiency levels. Accurate acquisition of 3D luminous intensity distribution curves is critical for optimizing luminaire structures, improving illum...
Abstract: Luminous intensity is the core photometric parameter that characterizes the luminous flux output of a light source per unit solid angle in a specific direction, which directly determines the light distribution, irradiation distance and illumination uniformity of luminaires. Taking the LISUN LSG-6000 LM-79 vertical goniophotometer as the testing platform, this paper systematically measure...
Abstract: The Type C goniophotometer system is core equipment for optical performance testing of lighting products. It meets the strict requirements of the latest standards such as LM-79-24 for static testing of luminaires, making it the preferred solution for photometric testing in general lighting. As a typical representative of the Type C goniophotometer system, the LISUN LSG-6000 rotating prob...
Abstract: The LM-79 Moving Detector Goniophotometer (Mirror Type C) is core equipment for optical parameter measurement in the lighting industry, specially designed for full-space luminous intensity distribution and related optical performance testing. As an upgraded flagship model in this series, the LISUN LSG-6000 Rotating Probe Vertical Goniophotometer (Full‑Space Goniophotometer) fully mee...
Abstract To test light intensity with laboratory-grade precision requires systematic compliance with international photometric standards and advanced goniophotometric instrumentation. This paper presents a comprehensive technical analysis of five critical measurement parameters—luminous intensity distribution, zonal luminous flux, luminaire efficiency, luminance limitation, and spatial color uni...
In 2026, the Bureau of Indian Standards (BIS) completed and issued the revised standard IS 16102-2:2026 for the operational performance of outdoor LED lighting equipment. As a core mandatory standard for India’s outdoor LED lighting sector, this update further refines technical requirements and improves test specifications on the original basis. It aims to enhance the reliability, safety, and ad...
On February 24, 2026, the Bureau of Indian Standards (BIS) officially released the revised safety standard for self-ballasted LED lamps for general lighting, IS 16102-1:2026, which replaces the 2012 version. It specifies that the transition period for the old and new standards will last until August 2, 2026, after which the old standard will be formally abolished. As the core mandatory safety stan...
Abstract: The instrument for measuring intensity of light is a core device in the field of illumination optical detection. As a high-precision representative of such devices, the Type C rotating probe vertical goniophotometer plays a key role in the testing of lamp luminous intensity distribution and light distribution curves. Taking the LISUN LM-79 Vertical Goniophotometer System (LSG-6000) as t...
Goniophotometer testing is the most prevailing way of attaining total three dimensional photometric characterization of luminaires and light source. In contrast to the simplified measurements which only report the total luminous flux or average illuminance, this method has the advantage to measure the light distribution in space at all relevant angles. In the case of the modern lighting system wit...
Type C Goniophotometer systems are used in preference in road and out light testing since they provide a convenient combination of geometry, angular coverage, and alignment that is flexible to the real-world luminaire requirements. At the beginning it is necessary to mention the goal of the measurement. The essence of roadway lighting specifications is the luminous intensity measurement of various...
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