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Home > Products > Light Measurement: LED Characterisation

LED Characterisation


Handheld Photometer

Handheld Photometer

The HLMS-200P is an easy-to-use, precision photometric instrument designed for use in the field, laboratory or on the production floor.
Technology From: Labsphere

Handheld Photometer

The HLMS-200P is an easy-to-use, precision photometric instrument designed for use in the field, laboratory or on the production floor.

The HLMS-200P instrument measures luminous flux from sources such as LED

Light Emitting Diode
s, small lamps and fibre illuminators. The instrument's photopically filtered silicon detector provides maximum sensitivity at low light levels. Sensitivity over five full decades provides the ability to measure from 0.05 to 7,000 lumens. A calibration certificate with calibration traceable to National Institute of Standards and Technology (NIST) is included.

The HLMS-200P is compact, lightweight, and rugged with a handle-grip enclosure and a built-in microprocessor that performs several functions at the touch of a button.

Data is instantly displayed on an easy-to-read 4-digit front panel LCD display. Simple push button controls are easily accessible and clearly labelled on the front panel. The instrument is powered by a 9V battery and is calibrated to display lumens.

Key Features
  • NIST
    National Institute of Standards and Technology
    Traceable Calibration
  • Spectral Correction
  • Auto Ranging
  • Auto Zero
  • Ratio
  • Display/Hold Function
  • Automatic Switch Off
  • 4 Digit LCD Display
  • Low Battery Indicator
  • Optional Bench Mount
Measure
  • LEDs
  • Small Lamps
  • Fibre Illuminators
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Light Meters

Light Meters

All light meter systems are fully calibrated with NIST traceability.
Technology From: International Light Technologies (ILT)

Light Meters

A full line of precision, configurable digital light meters (radiometers/photometers) with a comprehensive selection of light detectors (light sensors) for measuring a wide array of visible, UV, and infrared light sources such as lamps, LEDs, and lasers are available from Warsash Scientific.

All light meter systems are fully calibrated with NIST traceability. Annual re-calibration services through International Light Technologies are also available.

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SpectroRadiometers

SpectroRadiometers

These instruments are calibrated to measure the spectral irradiance in units of watts per meter squared over the wavelength range in nanometres provided by the selected spectrometer model.
Technology From: StellarNet

SpectroRadiometers

Wavelength Range: 200-1700nm

The StellarNet model spectrometers are great tools for low cost, routine analysis of all types of light. From measuring the irradiance of standard light bulbs to measuring the exact colour coordinates of the yellow in a traffic light. They are used worldwide to routinely analyse light.

These instruments are calibrated to measure the spectral irradiance in units of watts per meter squared over the wavelength range in nanometres provided by the selected spectrometer model. Warsash Scientific offer Radiometer systems in the 200-1700nm range. Calibrated spectroradiometers can be used to measure absolute intensity, xy chromaticity (CIE 1931), purity, correlated colour temperature, and dominant wavelength.

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Illumia Lite

Illumia®Lite

Illumia Lite is a sphere-based portable solution including self-absorption correction that is both reliable and affordable.
Technology From: Labsphere

Illumia®Lite

LED manufacturers and luminaire designers require a quick, portable device for complete spectral flux analysis. Reliable measurements of small LEDs, fibre outputs, and other small sources has usually meant compromising on accuracy or speed. As the leader in the field, Labsphere has designed a sphere-based portable solution including self-absorption correction that is both reliable and affordable.

Key Features
  • 4cm integrating sphere spectral light measurement system
  • Measures LEDs and other sources up to 1cm
  • Wavelength range 380nm - 820nm
  • Luminous flux range 0.1 lumens - 5000 lumens
  • Wavelength resolution < 5nm
  • Wavelength accuracy < 0.5nm
  • Dark correction capability via software
  • Self-absorption correction via built-in auxiliary lamp
  • Device calibration capability
  • Handheld portable size and weight
  • Ergonomic design
  • USB connection to computer with easy-to-use software (included)
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margin-right:165px;">Presented By: Labsphere

Illumia Lite Demonstration



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Illumia<sup>®</sup> Light Measurement Systems

Illumia® Light Measurement Systems

Labsphere's series of illumia® Light Measurement Systems are the optimal choice for spectral flux measurement solutions.
Technology From: Labsphere

Illumia® Light Measurement Systems

Labsphere's series of illumia® Light Measurement Systems are the optimal choice for spectral flux measurement solutions. Featuring a wide range of high-end spectrometers, MtrX-SPEC software®, Labsphere light measurement spheres and lamp standards, Illumia Light Measurement Systems are configurable for all applications.

Key Features
  • Wide dynamic range which allows a single sphere to measure a wide range of light levels
  • NIST traceable standards for in-house recalibration
  • Spectral results in milliseconds
  • Spectraflect® interior sphere coating
  • Available in 25cm, 50cm, 100cm, 165cm, and 195cm sphere diameters
  • Conforms to national standard measurement geometries
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Illumia<sup>®</sup>Pro Light Measurement Systems

Illumia®Pro Light Measurement Systems

Available in sphere sizes ranging from 0.5 meters to 1.95 meters, each designed for both 2pi and 4pi measurement geometries.
Technology From: Labsphere

Illumia®Pro Light Measurement Systems

Labsphere's Illumia® Pro Light Measurement Systems allow users to quickly, accurately, and simultaneously measure the optical and thermal characteristics of various LEDs and arrays.

Key Features
  • Wide dynamic range allows a single sphere to measure a wide range of light levels
  • NIST traceable standards for in-house recalibration
  • Spectral results in milliseconds
  • Spectraflect interior sphere coating
  • Complete thermal, optical & electrical analysis
  • TEC temperature control and monitoring
  • Measure optical properties as a function of temperature and operating current
  • Available in 0.5m, 1m, 1.65m, and 1.95m sphere diameters
  • Conforms to IESNA LM-79 & LM-80 measurement geometries
  • Ambient air temperature control available
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LED/SSL Systems

LED/SSL Systems

The most common method for measuring the total luminous flux of any source included OLEDs and LEDs is using an integrating sphere spectrometer.
Technology From: Labsphere

LED/SSL Systems

Typical quantities for LED

Light Emitting Diode
measurements of interest are luminous flux, luminous intensity, x, y, dominate wavelength, peak wavelength, FWHM
Full Width at Half Maximum
and for white LEDs, CRI
Colour Rendering Index
. Total luminous flux is the most important parameter for non-directional characterisation of an LED for luminous efficacy performance.

The most common method for measuring the total luminous flux of any source included OLED

Organic Light Emitting Diode
s and LEDs is using an integrating sphere spectrometer. The integrating sphere spectrometer is calibrated with a standard of total spectral flux employing the comparison method made simple with application-based software, a calibrated standard lamp of known output, commonly referred to as the comparison method. The results of this comparison determine the light output test lamp.

For directional applications, LED intensity and spatial distribution are the most important parameters. For intensity measurements, a precision entrance port into a near cosine sphere detector is configured for Condition A or B measurements where the device is located 316mm or 100m respectively away from the entrance port of the sphere intensity head. The head is coupled with a spectrometer with application-based software calibrated for spectral intensity responsivity.

Key Features
  • XSLMS High Speed Spectral LED Measurement System
  • CSLMS Spectral Flux Lamp Measurement System
  • CSLMS LED Choice Total Spectral Flux LED Measurement Systems
  • OCS Thermal LED Measurement Systems
  • Halfmoon LED Measurement Systems
  • LCS LED Characterisation Systems
  • LED Spatial Analyser LSA 3000
  • Custom LED/SSL System Development
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All products and information are subject to change without notice.