“Integrating Sphere: A Comprehensive Overview of Properties and Applications”

Introduction
An integrating sphere is a spherical device used to measure the optical properties of materials. It is a hollow sphere coated with a highly reflective material on the inside surface. The sphere is designed to uniformly distribute light from a source to the sample and collect the reflected light from the sample. Integrating sphere are used in a wide range of applications, including lighting, photometry, and radiometry. This article provides a comprehensive overview of the properties and applications of integrating sphere.

Properties of Integrating Sphere
The properties of integrating spheres are critical to their performance. The following are some of the key properties of integrating sphere.

Size and Shape
Integrating sphere come in different sizes and shapes. The size of the sphere determines the amount of light that can be collected and the size of the sample that can be measured. The shape of the sphere can affect the distribution of light within the sphere.

The optical sphere works with a Spectroradiometer to do the photometry, colorimetry and radiometry parameters measurement.
• IS-0.3M/IS-0.5M is for LEDs, LED modules, mini LED bulbs & other small lamps. The flux testing range is 0.001 to 1,999 lm
• IS-1.0MA is for CFL or LED bulbs. The flux testing range is 0.1 to 199,990 lm
• IS-1.5MA/IS-1.75MA is for CFL, LED bulb and tube, fluorescent lamp, CCFL. The flux testing range is 0.1 to 1,999,900 lm
• IS-2.0MA is for HID lamps or high power lamps. The flux testing range is 0.1 to 1,999,900lm

Reflectance Coating
The inside surface of the sphere is coated with a highly reflective material, such as barium sulfate or magnesium oxide. The reflectance coating should have high reflectivity over a broad range of wavelengths to ensure accurate measurements.

Port Configuration
Integrating sphere have ports for the light source and the sample. The number, size, and location of the ports can affect the uniformity of the light distribution and the accuracy of the measurements.

Baffles
Baffles are used to reduce the direct transmission of light from the source to the detector. They are placed inside the sphere to block the direct path of light and scatter it to ensure uniform illumination of the sample.

What does an integrating spheres measure?

The Ulbricht Sphere work with a spectroradiometer to measure single LEDs and LED lighting products light. LED’s quality should be tested by checking its photometric, colorimetric and electrical parameters. Please click here to review more details for LPCE-2 High Precision CCD Spectroradiometer Ulbricht Sphere System.
• Colorimetric: Chromaticity coordinates, CCT, Color Ratio, Peak Wavelength, Half Bandwidth, Dominant Wavelength, Color Purity, CRI, CQS, TM-30 (Rf, Rg), Spectrum Test
• Photometric: Luminous Flux, Luminous Efficiency, Radiant Power, EEI, Energy Efficiency Class, Pupil Flux, Pupil Flux Efficiency, Pupil Factor, Cirtopic Flux, Plant Growth Lamp PAR and PPF

Applications of Integrating Sphere
Integrating spheres are used in a wide range of applications, including lighting, photometry, and radiometry. The following are some of the key applications of integrating sphere.

Lighting
Integrating spheres are used to measure the total luminous flux of a light source. The sphere collects all the light emitted by the source and measures the total amount of light. This measurement is used to determine the efficiency of the light source and to compare different light sources.

Photometry
Integrating spheres are used to measure the photometric properties of materials, such as luminance and illuminance. The sphere collects the light reflected by the sample and measures the amount of light per unit area. This measurement is used to determine the brightness and color of the sample.

Radiometry
Integrating spheres are used to measure the radiometric properties of materials, such as spectral reflectance and transmittance. The sphere collects the light reflected or transmitted by the sample and measures the amount of light per unit area and per unit wavelength. This measurement is used to determine the optical properties of the sample.

Calibration
Integrating spheres are used to calibrate light sources and detectors. The sphere provides a stable and uniform light source that can be used to calibrate other instruments. The sphere can also be used to calibrate detectors by measuring the amount of light collected by the detector.

Conclusion
Integrating spheres are critical devices used to measure the optical properties of materials. They are used in a wide range of applications, including lighting, photometry, and radiometry. The properties of integrating sphere, such as size and shape, reflectance coating, port configuration, and baffles, are critical to their performance. Integrating spheres provide accurate and reliable measurements of the optical properties of materials and are essential tools for researchers and engineers in many fields.

LISUN Solution:
Solution 1:High Precision Spectroradiometer Integrating Sphere System LPCE-2(LMS-9000C) it suit for most customer (Labs, university and some factories) whoes budget enough.

LPCE-2 Integrating Sphere Spectroradiometer LED Testing System is for single LEDs and LED lighting products light measurement. LED’s quality should be tested by checking its photometric, colorimetric and electrical parameters. According to CIE 177, CIE84,  CIE-13.3, IES LM-79-19, Optical-Engineering-49-3-033602, COMMISSION DELEGATED REGULATION (EU) 2019/2015, IESNA LM-63-2, IES-LM-80 and ANSI-C78.377, it recommends to using an array spectroradiometer with an integrating sphere to test SSL products.

integrating sphere

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Integrating Sphere, Spectroradiometer, Surge Generator, ESD Simulator Guns, EMI Receiver, EMC Test Equipment, Electrical Safety Tester, Environmental Chamber, Temperature Chamber, Climate Chamber, Thermal Chamber, Salt Spray Test, Dust Test Chamber, Waterproof Test, RoHS Test (EDXRF), Glow Wire Test and Needle Flame Test.

Please feel free to contact us if you need any support.
Tech Dep: Service@Lisungroup.com, Cell/WhatsApp:+8615317907381
Sales Dep: Sales@Lisungroup.com, Cell/WhatsApp:+8618117273997