Radiant Vision Systems source imaging goniometer
The Source Imaging Goniometer (SIG) by Radiant Vision Systems is a specialized instrument designed for measuring the near-field light output of small light sources, particularly LEDs. Here’s a breakdown of its key features and functionalities:
Purpose:
- Characterize the spatial distribution of light intensity and color from LEDs and other small light sources.
- Generate precise data for optical simulations and design of lighting systems and products.
Applications:
- LED research and development
- LED manufacturing and quality control
- Design of luminaires and optical systems
Components:
- ProMetric® Imaging Colorimeter or Photometer: Captures high-resolution images of the light source.
- Goniometric assembly: Precisely positions the light source and the imaging colorimeter relative to each other, allowing for measurements from various angles.
- SIG 2.0 Control and Analysis Software: Controls the measurement process, analyzes captured data, and generates reports.
Functionality:
- The SIG captures images of the light source from multiple angles, essentially building a 3D map of its light distribution.
- This data is then processed and converted into a Radiant Source Model (RSM). RSM is an industry-standard format that represents the comprehensive near-field characteristics of the light source.
- The RSM data includes information about the light’s intensity, color, and spatial distribution.
- Using Radiant Vision Systems’ ProSource® Software, RSM data can be exported to various optical design software packages for further analysis and simulation.
Benefits:
- Provides highly accurate and detailed information about the light output of LEDs.
- Enables engineers to optimize LED designs and predict their performance in real-world applications.
- Reduces development time and costs for lighting products.
Overall, the Source Imaging Goniometer by Radiant Vision Systems is a powerful tool for those working with LEDs and other small light sources. It offers a comprehensive understanding of their light output, facilitating better design and development of lighting systems. Contact us for quote

SIG® -400
ProMetric® Source Imaging Goniometer® SIG-400 was developed for the measurement of near-field luminous intensity for LEDs and other small light sources
