LISUN has been a member of the CIE International Commission on Illumination since 2003. We have actively participated in the drafting and formulation of CIE relevant standards, and also sponsored several CIE related meetings. LISUN has always maintained close cooperation with CIE International Commission on Illumination, usually, can release test instruments that fully meet the CIE requirements at the first time, contribute to the quality control of lighting products for enterprises.
The International Commission on Illumination (usually abbreviated CIE for its French name, Commission internationale de l’éclairage) is the international authority on light, illumination, colour, and colour spaces. It was established in 1913 as a successor to the Commission Internationale de Photométrie, which was founded in 1900, and is today based in Vienna, Austria.
The CIE has six divisions, each of which establishes technical committees to carry out its program under the supervision of the division’s director (depending):
Division 1: Vision and Colour
Division 2: Physical Measurement of Light and Radiation
Division 3: Interior Environment and Lighting Design
Division 4: Transportation and Exterior Applications
Division 6: Photobiology and Photochemistry
Division 8: Image Technology
Division 5 (Exterior Lighting and Other Applications) and Division 7 (General Aspects of Lighting) are inactive today.
• In 1924 it established the standard photopic observer defined by the spectral luminous efficiency function V(λ), followed in 1951 by the standard scotopic observer defined by the function V’(λ).
• Building on the Optical Society of America’s report on colorimetry in 1922, the CIE convened its eighth session in 1931, with the intention of establishing an international agreement on colorimetric specifications and updating the OSA’s 1922 recommendations based on the developments during the past decade. The meeting, held in Cambridge, United Kingdom, concluded with the formalization of the CIE 1931 XYZ colour space and definitions of the 1931 CIE 2° standard observer with the corresponding colour matching functions, and standard illuminants A, B, and C.
• In 1964 the 10° CIE standard observer and its corresponding colour matching functions as well as the new standard daylight illuminant D6500 were added, as well as a method for calculating daylight illuminants at correlated colour temperatures other than 6500 kelvins.
• In 1976, the commission developed the CIELAB and CIELUV colour spaces, which are widely used today.
Based on CIELAB, colour difference formulas CIEDE94 and CIEDE2000 were recommended in the corresponding years.
Our LSG-1800 Goniophotometer.LSG-2000 Goniophotometer.LSG-3000 Goniophotometer.LSG-5000 Goniophotometer are designed according to CIE 121-1996_EN. Our LMS-6000 Spectroradiometer LMS-7000 Spectroradiometer.LMS-8000 Spectroradiometer.LMS-9000 Spectroradiometer.LMS-9500 Spectroradiometer are designed according to CIE 177_2007 and CIE_13.3-1995. Our IS-*MA Integrating Sphere is designed according to CIE 84-1989. Our LS-860 Luminous Intensity Distribution Tester is designed according to CIE 177_2007. Our LSRF-3 Run Up Time and Flicker Test System is designed according CIE_TN_006-2016.
Lisun Instruments Limited was found by LISUN GROUP in 2003. We have sales and service offices in China, Russia, India and Korea. In 2012, we built a high level products show room and accreditation lab in Shanghai. LISUN has setup a new manufactory in China to design & produce the lighting and electrical test instruments. Its quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international/national standards. All products passed CE certificate and authenticated by the third party lab.
Our main products are Goniophotometer, Surge Generator, EMC Test Systems, ESD Simulator, EMI Test Receiver, Electrical Safety Tester, Integrating Sphere, Temperature Chamber, Salt Spray Test, Environmental Test Chamber, LED Test Instruments, CFL Test Instruments, Spectroradiometer, Waterproof Test Equipment, Plug and Switch Testing, AC and DC Power Supply.