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Absorption Correction: How to Avoid a Common LED Testing Errors

From Labsphere, Inc.
 

 
Integrating sphere photometers and spectrometers simplify the testing of otherwise 'difficult-to-measure' light sources. Yet when measuring the total luminous or spectral flux of an LED or LED lighting system, one must consider the size, shape, spectral,
Products & Services
Integrating spheres are hollow optical spheres used for measuring the diffuse reflectance or transmittance of objects. Learn more about Integrating Spheres
Photometers produce electrical signals, which correspond to radiant flux energy, for a series of discrete wavelength intervals. They are used to measure wavelengths of light spectra and optical or atomic emissions. Search by Specification | Learn more about Photometers
Flame photometers use atomic emission for the routine detection of metal salts, principally sodium (Na), potassium (K), lithium (Li) and calcium (Ca). Learn more about Flame Photometers
UV and visible spectrometers measure the amount of ultraviolet (UV) and visible light transmitted or absorbed by a sample placed in the spectrometer. Search by Specification | Learn more about UV and Visible Spectrometers
Spectrometers are analytical instruments which disperse an emission (such as particles or radiation) according to some property of the emission (such as mass or energy) in order to measure the amount of the dispersion. This product area includes Portable / Miniature, visible, infrared (IR), ultraviolet (UV), atomic absorption (AA), optical emission (OE), Raman, X-ray fluorescence (XRF) and mass spectrometers. Specific search forms are also available. Search by Specification | Learn more about Spectrometers
Product Announcements
Avantes - Integrating Sphere for Diffuse Reflectance
The AvaSphere-50-LS-HAL is an ideal tool for enabling reflectance measurements on diffuse samples. The PTFE baffled sphere has an integrated 5W tungsten halogen light source which couples 160 times... (read more)
StellarNet, Inc. - SpectroRadiometer for LED Measurement
StellarNet's low cost miniature radiometers are the perfect tool to analyze LEDs for both irradiant output, color, and spectral profiling. These instruments are NIST calibrated to measure the absolute... (read more)
Bayer MaterialScience LLC - Star Light, Star Bright – LEDs for Day or Night!
Looking for engineered plastics that can bring your latest LED Application to life? Don't bother wishing upon a star. Instead, put your trust in Bayer MaterialScience, a leading LED materials... (read more)
Betop Electronics Co., Ltd. - T8 LED tube
T8 LED tube, energy saving and long lifespan.Without UV or IR radiation. (read more)
CVI Melles Griot - Spectrometers
Melles Griot spectrometer systems consist of dedicated electronics, an optical bench, and a detector array. (read more)
SunLED Corporation - Super Flux LED
This extraordinary high flux LED allows a designer to utilize the maximum light disbursement possible. This innovative 7.6 x 7.6mm package reveals a high luminous intensity and a uniform light output. (read more)
Betop Electronics Co., Ltd. - 3W High Power MR16 LED spotlight
3W High Power MR16 LED spotlight.GU10,E27,E14 and JDR available, USA Cree chips. Energy-saving and long lifespan. (read more)
Kingbright Corporation - XPower WHITE LEDs
Kingbright Corporation proudly presents its high brightness XPower WHITE LEDs (part number AA1010RWC9 & AA1011RWC9) utilizing state-of-the-art package design with cutting edge InGaN LED chip and... (read more)
Topics of Interest
6.0 MEASURING LIGHT AND ILLUMINATION TERMS Definitions Luminous intensity, I, is the solid angular flux density in a given direction measured in candlepower in American National Standards... (Read More)
Charles L.Amick, P.E., F.I.E.S., L.C. Lighting Consultant INTRODUCTION Lighting accounts for 20 to 25 percent of all electricity consumed in the United States, and as a nation, we spend... (Read More)
Charles L.Amick Professional Engineer; Lighting Consultant; Fellow, Illuminating Engineering Society of North America (IESNA); Lighting Certified, National Council on Qualifications for the... (Read More)
Absorption based photometers typically incorporate a focused beam of light and project this beam through the process media while working much the same way as a laboratory spectrophotometer. Process... (Read More)
In our discussion of radiometry, light flux is measured in terms of power or energy. However, even under identical viewing conditions, equal power of light of different wavelengths does not produce... (Read More)
See more product announcements for Integrating Spheres
Integrating Sphere for Diffuse Reflectance

Integrating Sphere for Diffuse Reflectance
Avantes


Reliable LEDs for Automotive Grade Optocouplers

Reliable LEDs for Automotive Grade Optocouplers
Avago Technologies


Integrated Optical Proximity Sensors

Integrated Optical Proximity Sensors
Avago Technologies


11 See more product announcements for Integrating Spheres