Uniform Light Source Integrating Sphere / Standard Luminance Source

Introduction

The diffuse uniform light source system consists of an integrating sphere, power supply, light source (halogen lamp), and controller. It delivers uniform Lambertian diffuse output with high uniformity of the exit spot; luminance, illuminance, and intensity are also uniform. As light is distributed uniformly inside the sphere before exit, the sphere can serve as an intensity attenuator—output-to-input ratio is approximately exit port area / internal surface area. Different sources (deuterium, xenon, LED, halogen) can be integrated to form a mixed uniform light source system.

Technology & Features

• Integrated sphere, power supply, light source (halogen), and controller
• Lambertian diffuse output with high exit spot uniformity
• Uniform luminance, illuminance, and intensity
• Can act as intensity attenuator; output/input ≈ exit area / internal surface area
• Supports mixed sources: deuterium, xenon, LED, halogen
• Exit port uniformity better than 98%
• System stability better than 99% over 2H

Applications

Used for imaging systems and devices, cameras, camcorders, aerospace remote sensing detectors, etc. in the laboratory. The diffuse uniform light source system is mainly used for luminance and spectral radiance measurement system calibration, imaging measurement systems, and uniformity calibration of camera and imaging systems. It can also provide low-level uniform output for special requirements, such as simulating starlight and moonlight.