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LIGHT MEASUREMENT SOLUTIONS

LIGHT MEASUREMENT SOLUTIONS
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LIGHT MEASUREMENT for General and Specialized Lighting

General & Specialized Lighting Modern lighting can be designed to not only support people‘s visual performance requirements, but also to support emotional and biological needs. This is all possible in conjunction with high energy efficiency. The applications of artificial lighting are diverse and wide-ranging. Solid-state lighting also promotes intelligent concepts in existing ap- plications and opens up many new applications. Solid-state lighting products and installations require light meters that meet the increasing demands of their development, manufacture, qualification and use. The...

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Lighting Quality Illuminance Color The near limitless color possibilities of LED lighting creates many opportunities for lighting designers and requires a range of suitable color quality metrics. Color temperature, CCT, is a widely used ‘light quality’ indicator even though different color light sources can have the same CCT. The CIE general color rendering index, CRI Ra, is also widely specified for lighting products. The limitations of the CIE CRI system have been well investigated with respect to LEDs and alternatives such as the IES TM-30-18 system has been widely adopted meanwhile....

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Health and Wellbeing Flicker The detrimental health effects of light flicker such as triggering photosensitive epilepsy and stroboscopic effects are well known. Flicker is not an intrinsic characteristic of LEDs but a result of the drive and control circuitry employed. Therefore, quality lighting products and installations should be assessed for flicker in addition to photometric and colorimetric properties. The variation in light output over time from a light source can have both visual and non-visual detrimental effects on the observer, collectively referred to as ‘Temporal Light...

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Horticultural Lighting LED Grow Lights Indoor Work Places The spectral distribution of SSL can be very different to that of traditional lighting technologies resulting in potentially significant errors in illuminance measurements made with traditional lux meters. Color rendering index requires the measurement of the spectral power distribution of the light. Therefore, both measurement requirements are best satisfied by light meters with full spectral measurement capability . The European standard, EN 12464-1, defines lighting requirements for indoor work areas. It specifies measurement...

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LED Measurement Solutions LED / SSL Testing LED Binning Despite the most sophisticated manufacturing technologies employed by the semiconductor industry, light output and color temperature varies from chip to chip. Therefore, binning is employed to maximise yields and to categorise products. Suitable spectroradiometers, exemplified by the BTS2048 series, must The quality of LED / Solid State Lighting products supplied worldwide varies from excellent to very poor. Accurate performance claims require appropriately configured systems incorporating integrating spheres, goniometers and intensity...

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LED Measurement Solutions Board Mounted LEDs Temperature Effect on LED Performance The particular current drive conditions as well as the thermal design of the LED carrier board and associated heatsink can significantly influence the optical performance of any assembled LED module or product. Typically, the end use operating parameters differ significantly from the Good thermal design of LED light sources and luminaires is essential to ensure optimum LED performance with respect to light output and lifetime. LEDs do not radiate significant amounts of heat but within the LED’s semiconductor...

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Light Hazard Light Transmission In-Situ Light Transmission Blue Light Hazard Optical radiation is capable of causing damage to our skin, the front surface of our eyes and our retina. Currently, Blue Light Hazard in the 300-700nm region is of primary interest for LED lighting but The light transmission of window glazing, vehicle windscreens, protective shields etc. needs to be evaluated with respect to the photometric sensitivity of the human eye. Conventional measurements with laboratory based spectrophotometers permit only relatively small UV Hazard may become more significant as such...

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Integrating Spheres Standard Integrating Spheres Gigahertz-Optik manufacturers a range of standard integrating spheres for use with both BTS2048-series and BTS256LED spectroradiometers. These configurations offer convenient and accurate measurement of luminous flux, spectral power distribution, color, and color rendering indices of LED devices and solid state lighting products. Calibration You Can Trust Calibration is a prerequisite for maintaining accuracy in any type of measurement instrument. Therefore, Gigahertz-Optik has always invested heavily to ensure that it is able to offer the...

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UV Measurement Technology UV Curing The high intensity UV radiation used for curing processes places special demands on the radiometers used to control the exposure of work pieces to the UV. Gigahertz-Optik has developed low profile devices for both gas discharge lamps and UV LEDs that are able to withstand the high temperatures involved whilst accurately measuring UV intensities over a very wide dynamic range (from 1 mW/cm² to 40,000 mW/cm² ). UV LEDs UV LEDs are now frequently replacing conventional UV sources as well as creating many new applications. Therefore, the accurate and...

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Our Vision - Enabling accuracy Gigahertz-Optik enables success in challenging light measurement tasks through smart solutions based on the combination of accuracy, reliability, flexibility, ease of use, productivity and innovation recognized by industry and science. We are your worldwide partner in photonics offering UV to IR measurement equipment through own German development, production, high level support and a highclass ISO 17025 calibration laboratory. Broadband light measurement devices Spectral light meters Complementary products ● Integrating sphere light sources ● Light hazard...

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