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Goniophotometer make luminaire measurements more accessible and affordable

Goniophotometer make luminaire measurements more accessible and affordable.The measurement of luminaires has traditionally been performed with an illuminance meter placed in the photometric far-field which views the light source at one angle of azimuth and elevation at a time. The device under test is mounted on a motorised goniometer stage (the "goniometer") and the photometer views the lamp from a distance of between 10 and 25m, the actual working distance depending on the size of the light fitting. The cost of a typical far-field goniophotometer system (combined with the associated, large dark room) was often prohibitive, which meant that most manufacturers have used the services of independent test laboratories. The Lisungroup goniophotometer changes all this by exploiting the latest advances in imaging photometry to make luminaire measurements more accessible and affordable.

Goniophotometer make luminaire measurements more accessible and affordable

Goniophotometer make luminaire measurements more accessible and affordable.The measurement of luminaires has traditionally been performed with an illuminance meter placed in the photometric far-field which views the light source at one angle of azimuth and elevation at a time. The device under test is mounted on a motorised goniometer stage (the "goniometer") and the photometer views the lamp from a distance of between 10 and 25m, the actual working distance depending on the size of the light fitting. The cost of a typical far-field goniophotometer system (combined with the associated, large dark room) was often prohibitive, which meant that most manufacturers have used the services of independent test laboratories. The Lisungroup goniophotometer changes all this by exploiting the latest advances in imaging photometry to make luminaire measurements more accessible and affordable.

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-Developing Intelligence from Light

An integrating sphere (also known as an Ulbricht sphere) is an optical component consisting of a hollow spherical cavity with its interior covered with a diffuse white reflective coating, with small holes for entrance and exit ports. Its relevant property is a uniform scattering or diffusing effect. Light rays incident on any point on the inner surface are, by multiple scattering reflections, distributed equally to all other points. 

Lungruop's Integrating Spheres are designed for the measurement of the total flux output of lamps and other light sources. The LMS Integrating Spheres range in size from 4 to 76 inches in diameter, offer a highly reflective, durable Spectralon or Spectraflect interior, and can accommodate lamp sizes from sub-miniature incandescent to 52-inch fluorescent lamps.

Integrating Spheres of Lisungroup is coming for all kinds of 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.