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Integrating sphere-the ideal tool for measuring optical radiation

Integrating spheres are ideal tools for measuring optical radiation. Designed to spatially integrate radiant flux, these integrating spheres can be coupled with a sensor to create a radiometer, photometer, or spectroradiometer. Such a setup would permit the measurement of total geometric flux emanating from a light source or the flux density of an illuminated area. The spheres also provide an ideal method to measure output of high power lasers and laser diodes. Our spheres can also be setup to measure reflectance and transmittance of materials.

Goniophotometers designed to analyze angle dependent spatial radiation properties

Goniophotometers are designed to analyze angle dependent spatial radiation properties of LED luminaires, lamps and modules.

With an angular resolution of 0.01? the goniophotometers capture highly accurate and repeatable LED measurements.

Our Goniophotometers utilize lisungroup's high-speed spectroradiometers to capture complete spectral measurements as a function of angle. lisungroup's spectroradiometers feature millisecond measurement speed, exceptional low-light measurement capability and superior blue-light region sensitivity.

Complete Testing Solutions for Any Light Measurement Application

When combined with a Lisungroup spectroradiometer, our integrating spheres create complete testing solutions for any light measurement application. Lisungroup spectroradiometer systems rapidly capture complete spectral measurements with high sensitivity, superior color, linearity and amplitude accuracy. RadOMA spectroradiometers from Lisungroup come with a NIST-traceable factory calibration and can be self calibrated by the end user. Unique configurations are optimized for LED testing, display measurement and ANVIS testing of cockpit displays. Custom spectroradiometer solutions are designed for integration into production lines and R&D testing environments.

All Lisungroup instruments are distinguished by their value, providing unmatched quality at competitive prices.

Measurement of the Angular Dependence of Optical Quantities

Luminous intensity distribution describes a fundamental characteristic of luminaires including LED-based solid-state lighting (SSL) systems. A goniophotometer is generally used to measure this property. A goniophotometer is a photometer for measurement of the angular dependence of optical quantities. It is applicable to acquire the luminous intensity distribution, luminous flux, spatial color distribution, and  luminance distribution of lamps and luminaires. The latter two are proposed in recent years as the development of light & lighting.

Combined with a spectroradiometer from Lisungroup, all spectral quantities such as color coordinates, color temperature and even color rendering index can be determined as a function of angle.

Integrating Spheres - measurement for light sources

Lisungroup Integrating Spheres measure for all kinds of light sources.Assessment of the total radiant power or luminous flux of light sources using integrating spheres is one of the most important tests in light measurement. The inside surface of an integrating sphere is coated with a diffusely reflecting material which guarantees complete integration and homogenization of the emitted radiation. The integrated light is then measured at the detector port.

Lisungroup has developed a complete series of integrating spheres, available in a wide range of sizes and providing functionality for a broad spectrum of applications. A deciding factor in choosing the appropriate integrating sphere is the maximum dimension of the light source to be measured. Larger sources require the use of larger integrating spheres in order to keep measurement errors to a minimum.