Goniophotometer make lights pecfect

The use of goniophotometers has been increasing in recent years with the introduction of LED-light sources, which are mostly directed light sources, where the spatial distribution of light is not homogeneous. Due to strict regulations, the spatial distribution of light is of high importance to automotive lighting and its design.
Designed for precision, accuracy and reliability, Lusungroup goniophotometer systems offer strong, stable frames that accept all types and sizes of lights in a range of spectrums including visible/photopic, night vision (NVIS), IR and shortwave IR (SWIR). Goniophotometer units are available in 18-inch tabletop, 30-inch open top, 40-inch, 60-inch, and 80-inch designs to accommodate a wide range of light assemblies including individual LEDs, bulbs, automotive front or rear-end panels, buoys, port lighting and obstruction lights. Lusun heavy duty (HD) series goniophotometer systems test larger, heavier lighting devices. Several versions are also available with five-axis positioning capability.

Integrating Spheres of Lisungroup pvovide the right service for lighting sources

Lisun integrating spheres is coming for all kinds of lighting sources.When availabled in a variety of sizes

to offer customers the most flexibility Lisun integrating Spheres choosing a sphere for their application.

The spheres are extremely robust yet are surprisingly lightweight, compact, and easy to operate.
The function of an integrating sphere is to spatially integrate radiant flux. Before one can optimize a

sphere design for a particular application, it is important to understand how the integrating sphere works.

How light passes through the sphere begins with a discussion of diffuse reflecting surfaces. From this, the

radiance of the inner surface of an integrating sphere is derived and two related sphere parameters are

discussed, the sphere multiplier and the average reflectance. Finally, the time constant of an integrating

sphere as presented is relevant to applications involving fast pulsed or short lived radiant energy.

Lisun goniophotometer is coming for all kinds of lighting sources

Lisun goniophotometer is coming for all kinds of lighting sources!The full determination of the data of luminaires and lamps becomes more and more important.

The lisungroup goniophotometer have realized measuring devices according to the desired range of the measuring objects and also according to the available laboratory space.

Utilized a new image-resolving CCD measuring technique for determining ray data and luminous intensity distributions,the Lisun goniophotomete correctly determinate the luminous intensity distributions (Lid) of lamps and luminaires .What's more the Lisun goniophotometer can also  performed far within their photometric limiting distance on the basis of image-resolved measurements of luminous intensity distributions. 

Integrating Spheres from the Lisun Group – We bring quality to light

Integrating Spheres from the Lisun Group (Hong Kong) limited– We bring quality to light ,

Lisun Group designs and manufactures a variety of good quality integrating spheres and accessories for photometric and radiometric applications.  Our spheres are available in a variety of sizes to offer customers the most flexibility when choosing a sphere for their application. The spheres are extremely robust yet are surprisingly lightweight, compact, and easy to operate.  

Goniophotometers from the Lisun Group – We bring quality to light

Goniophotometers from the Lisun Group (Hong Kong) limited– We bring qualitylight,combined with

a full range of the art photometers, colorimeters, radiometric application and other accessories –  corrected and automated measurement of the brightness  – luminous intensity , illuminance , luminous flux (lumen), retro-reflectivity (mcd/lx), color coordinates from optical radiation sources.

Our goniophotometers are used in the design, develop?ment, production QA testing of lamps and luminaires and in the certification of the final product accoding to relevant international and national regulations, standards and publications such as UN-ECE, SAE, FMVSS108, DIN-EN, CIE, ICAO, FAA, ASTM and others.

Goniophotometer

A Goniophotometer is equipment used for measurement of the light emitted from an object at different angles. The application of goniophotometers has been increasing in recent years with the introduction of LED-light sources, which are mostly directed light sources, where the spatial distribution of light is not homogeneous. Due to strict regulations, the spatial distribution of light is of high importance to automotive lighting and its design.

Visible light reflectance photometry

A reflectance photometer measures the reflectance of a surface as a function of wavelength. The surface is illuminated with white light, and the reflected light is measured after passing through a monochromator. This type of measurement has mainly practical applications, for instance in the paint industry to characterize the colour of a surface objectively.