Light Measurement

Light is produced from many natural and artificial sources. Controlling light and having an accurate understanding of its output, directionality and the appearance of what it irradiates is key to product development, quality and the success of a light source. Here are just a few examples of why Labsphere is leading the industry in light measurement.


Architectural Lighting

Architectural lighting is an integral part of the aesthetics and function of architecture, emphasizing the importance of professional lighting design as part of the total design process. Architectural lighting designers rely on unique lighting designs that fuel artistic inspiration and help them to succeed and compete professionally. The lamp and lighting system manufacturers design and test their products to serve this artistic need as well as to meet industry standards for lighting systems characterization.

Total luminous flux is the photopically weighted total light output from a light source. Total luminous flux is a key parameter for determining the luminous efficacy of a lighting system. The most common method for measuring the total luminous flux of light sources is using an integrating sphere spectrometer. The reading from the detection system is compared to a similar reading obtained from a calibrated lamp standard of known output. This process is commonly referred to as the “comparison method”. Today this is commonly done with software controlled hardware. The results of this comparison determine the light output of the lighting system. Labsphere offers a complete line of integrating sphere spectrometer and photometers for luminous characterization of lamps, LEDs and lighting systems.

 


Automotive Lighting Testing

For most applications the lamp under test is placed in the center of an integrating sphere photometer/spectrometer which collects the total flux output of the lamp. The reading from the detection system is compared to a similar reading obtained from a calibrated standard lamp of known output, commonly referred to as the “comparison method”. The results of this comparison determine the measurement of the flux output of the unknown lamp.

For light sources with directional output, a similar measurement can be made by directing the light source through a port in the integrating sphere. Again, the reading obtained for the device under test (DUT) is compared with the calibration reading to derive the flux output of the DUT.


Fiber Illuminator Testing

Manufacturers, distributors and users of boroscopes, endoscopes, and similar systems require precise calibration and/or characterization of the fiber-optic based illuminator systems used with these devices.

Measurement is performed by directing the light from the fiber illuminator or light guide into an integrating sphere, which collects the total flux from the source, and, by a process of multiple reflections, transfers a representative portion of this flux to a detection system. Typical quantity of interest is luminous flux expressed in lumens.


General Light Measurement

Total luminous flux is the spatially integrated, photopically weighted, total light output from a lamp. Total luminous flux is the most important parameter for non-directional, general lighting products.

For directional lamps, such as reflector lamps, intensity and beam angle are the most important parameters. The lamp total luminous flux divided by the lamp electrical power is the luminous efficacy (lm/W) of a lamp.

The most common method for measuring the total luminous flux of lamps is using an integrating sphere photometer employing V (lambda) corrected photometer or spectrometer. The reading from the detection system is compared to a similar reading obtained from a calibrated standard lamp of known output, commonly referred to as the “comparison method”. The results of this comparison determine the light output of the test lamp.


Laser Power Measurement

The Labsphere Laser Power Measurement Systems (LPMS) Series assures an accurate, reproducible method of determining the total power from a collimated or divergent laser or laser diode. Specifically designed for laser applications, LPMS spheres are ideal for measuring the total power of a beam of optical radiance. Because of the unique geometry of the sphere, beam power measurements are independent of beam polarization, and are insensitive to beam alignment.


Custom Solutions that Meet Your Needs...and Your Time Frame

Labsphere has created thousands of customized solutions, tailored to the specific and often proprietary needs of our customers.  Our expert team of Scientists and Engineers continue to advance our nearly 40 years of experience in dozens of industries – and our Operations team quickly turns these into finished product through our internal prototype shop and advanced manufacturing techniques.  Contact Labsphere with your specialized needs today.

Systems & Products For Light Measurement


Systems

illumia®Plus System
illumia®Plus System
LM-79 & LM-78 Electrical and Spectral Flux Measurement System for Lighting
illumia®Pro System
illumia®Pro System
LED and LED Array Thermal, Spectral Flux, and Electrical Characterization
Illumia®Lite Handheld System
Illumia®Lite Handheld System
Handheld Total Spectral Flux Analysis
Goniophotometers
Goniophotometers
Spatial Intensity Distribution Measurements for Auto and Lighting
LightFluxColor® Integrating Sphere Spectrometers
LightFluxColor® Integrating Sphere Spectrometers
Total Spectral Flux Measurement Systems for Lighting
HLMS-200P
HLMS-200P
Portable Measurements of Total Luminous Flux of LEDs and Fiber Illuminators
UV LED Measurement Systems
UV LED Measurement Systems
Total Spectral Flux Measurement Systems for UVA, UVB, and UVC LED Characterizati...
Type A Goniophotometer
Type A Goniophotometer
Ideal for measuring automotive lighting, traffic signals and retro-reflective re...
Type C Moving Mirror Goniophotometer
Type C Moving Mirror Goniophotometer
Ideal for measuring small lamps, large fixtures, and indoor and outdoor luminair...
Type C Moving Detector Goniophotometer
Type C Moving Detector Goniophotometer
Measures all parameters necessary for R&D confirmation, production use, quality ...
Benchtop_Goniospectrometer
Type D Benchtop Goniospectrometer
Ideal for measuring virtually any light source quickly in one or more C planes
Halfmoon Light Measurement Systems
Halfmoon Light Measurement Systems
Efficient forward flux measurement method in half the footprinthttps://www.labs...
Uncertainty Analysis Services
Uncertainty Analysis Services
Have confidence in every Lamp and Luminaire you measure in a Labsphere illumia®...
Flashlight Performance Test System
Flashlight Performance Test System
Designed specifically for the portable light industry, this system evaluates lam...

Materials & Coatings

Reflectance Reference Targets
Reflectance Reference Targets
Labsphere targets for calibration and test.
Reflectance Standards
Reflectance Standards
Labsphere standards for spectroscopy and other applications.
6080 White Reflectance Coating
6080 White Reflectance Coating
Touch-up coating for small-scale applications.
Spectralon® Calibrated Multi-Component Wavelength Standards
Spectralon® Calibrated Multi-Component Wavelength Standards
The Spectralon® Multi-Component Wavelength Calibration Standard combines three ...

Components & Accessories

Spectralon® Calibrated Multi-Component Wavelength Standards
Spectrometers
From mini CCD array spectrometers to high end, high speed LED spectrometers
Spectralon® Calibrated Multi-Component Wavelength Standards
Power Supplies
Traditional power supplies and the new HELIOS models
Laser Power Spheres
Laser Power Spheres
Collecting the total radiant power emitted by highly divergent or collimated sou...
HELIOS Power Supplies
HELIOS Power Supplies
The HELIOS LPS Power Supplies offer two high power dynamic options for lamp powe...
HELIOS Power Supplies
Detectors
Non-cooled detector assemblies including the new HELIOS model
Detector Assemblies
Detector Assemblies
Labsphere offers different types of non-cooled detector assemblies that are used...
HELIOS Detectors
HELIOS Detectors
The core of the HELIOS monitoring system is a new family of detectors that uses ...
LPS Power Supplies
LPS Power Supplies
Labsphere series 100 amp and 150 amp power supplies are available for use in lig...
CDS-3020/3030
CDS-3020/3030
Wide dynamic range with the speed and accuracy needed for manufacturing environm...
CDS 2600
CDS 2600
CDS 2600: Crossed Czerny-Turner spectrographs for highly efficient stray-light r...
CDS 600/610
CDS 600/610
CDS 600/610: accurate, easy to use systems for measuring total luminous flux.
General Purpose Integrating Spheres
General Purpose Integrating Spheres
Labsphere’s General Purpose Integrating Spheres provide great configuration fl...
General Purpose Integrating Spheres
KI-120 Koehler Illuminator
Exceptional 3200K uniform irradiance in the VIS-NIR region
KI-120
KI-120
Exceptional 3200K uniform irradiance in the VIS-NIR region
KI-120
System Controllers
Radiometers/photometers for use with Labsphere detectors.

Additional Products & Solutions


Automotive Light Source Calibration

For applications requiring the total output and color of the automotive lamp an integrating sphere spectrometer is used. The lamp under test is placed in the center of an integrating sphere spectrometer which collects the total spectral output of the lamp. The reading from the detection system is compared to a similar reading obtained from a calibrated reference standard lamp of known output, commonly referred to as the “comparison method”. The results of this comparison determine the measurement of the flux output of the unknown lamp. Labsphere’s Illumia® line of integrating sphere spectrophotometers are ideal for testing total spectral flux of interior and exterior automotive lamps.

Automotive lamps also require the measuring and reporting of the directionality of the emitted light. For this characterization Labsphere’s Type A and Benchtop goniophotometers are excellent for directionality control and test. 


Color Measurement of Light Source

For accurate measurement of LEDs, LED modules, light engines, lamps and luminaires color performance Labsphere offers a variety of total spectral distribution and spatial measurement systems for full characterization. 


Efficiency of Lamps and Luminaires

Qualify lamps and luminaires for Energy Efficiency to global standards with Labsphere’s renowned total spectral flux measurements systems and standards.


Fiber Optic Illuminator Measurement

Manufacturers, distributors and users of boroscopes, endoscopes, and similar systems require precise calibration and/or characterization of the fiber-optic-based illuminator systems used with these devices. Measurements are performed by directing the light from the fiber illuminator or light guide into an integrating sphere, which collects the total flux from the source, and, by a process of multiple reflections, transfers a representative portion of this flux to a detection system. Typical quantity of interest is luminous flux expressed in lumens.


Flashlight Measurement

The American National Standards Institute (ANSI) has specified a standard for flashlight performance, ANSI/NEMA FL-1:2009. The standard was developed by the Flashlight Standards Committee of the National Electrical Manufacturers Association (NEMA), and was convened by a committee of flashlight manufacturers.

The purpose of the standard is to allow consumers to make valid comparisons of light brands and models and to eliminate exaggerated light performance by quoting “emitter lumens” or “out-the-front lumens”. The tests can be performed by the manufacturer or an independent lab.

ANSI/NEMA FL-1 specifies flashlights for the following parameters: Light Output, Runtime, Peak Beam Intensity, Beam Distance, Water Resistance, and Impact Resistance.


Intensity Measurement

Characterize the temporal and spatial intensity distribution of LEDs, lamps and luminaires for general and automotive lighting with a diverse selection of robust and accurate goniophotometers, goniospectrometers and Tristimulus system.


Lamp/Luminaire Measurement

Total spectral flux, luminous flux, color and thermal characterization of LEDs, lamps and luminaires with integrating sphere spectrometers from 0.25m to 3m systems and standards. Contact us to learn which system is right for you.


Laser Pump Chambers

A Spectralon® reflector surrounding the laser rod serves again to improve the pumping efficiency by reflecting pump radiation that is not absorbed by the laser rod on its first pass.  Benefits to using Spectralon versus other material options include: 1) easily machined rapid prototype if Spectralon design guidelines are followed, 2) extremely uniform pumping which results in an optimum beam profile,  and 3) exceptionally long life time. 


Laser Measurement

Labsphere’s laser power measurements systems assures an accurate and reproducible method of determining the total power from a collimated or divergent lasers and laser diodes insensitive to the laser alignment. 


LED Measurement

Typical quantities for LED characteristics include luminous flux, luminous intensity, x, y, dominate wavelength, peak wavelength, FWHM and for white LEDs, CRI and spatial distribution with sensitivity to temperature, current and voltage. Ask us about our lab and production solutions.


LM-82 Lamps and Luminaire Elevated Temperature Tests

Ask us about our thermally controlled integrating sphere spectrometer options and Integral® software for testing to IES LM-82 guidelines. 


Optical Power (watts)

Measurement of optical energy.  Typically done with an integrating sphere to remove angular and area factors.  Labsphere laser power and spectral light measurement systems assure an accurate and reproducible method of determining the total power from a collimated or omnidirectional source.


Quantum Efficiency (Phosphor)

Measurement of the quantity and wavelengths of emitted photons from a phosphor or fluorescing material as a function of a known amount of stimulating photons at known wavelengths. Labsphere offers spheres, components and application specific solutions for QE testing. Contact us for assistance with choosing the right equipment for your Phosphor QE testing.


Spatial Distribution of Sources

Characterize the temporal and spatial intensity distribution of LEDs, lamps and luminaires for general and automotive lighting with a diverse selection of robust and accurate goniophotometers, goniospectrometers and Tristimulus system.


Spatial Mapping of Integrating Sphere Photometers

The mapping of an integrating sphere against a highly collimated source as a function of 2pi or 4pi steradians.  Basically a point-by-point measurement of a laser at each square centimeter of a sphere to determine the angular/spatial response of the sphere surface so it may be corrected from a total flux measurement.  Also known as a SRDF, Spherical Response Distribution Function. Contact us for options for mapping your sphere. 


Temporal / Stability

Temporal stability is just one feature built into Labsphere’s metrology systems to monitor the light source stability with time. Contact us for details.


Total Spectral and Luminous Flux Measurement

Total spectral flux, luminous flux, color and thermal characterization of LEDs, lamps and luminaires with integrating sphere spectrometers from 0.25m to 3m systems and standards. Contact us to learn which system is right for you.


UV LED Flux Measurement

Peak wavelength, bandpass, to power, efficiency and stability are just a few characteristics that describe the performance of UVA, UVB and UVC LEDs and LED modules. Contacts us about our standard and measurement solutions for R7D and productions


Transmittance

Labsphere offers a variety of reflectance and transmittance solutions in one. Standard and Custom. Contact us for assistance on choosing the right components or system for you. 


Industries Utlizing Light Measurement