The Radiant Imaging SIG-300 (Source Imaging Goniometer, Gen. 3) is a fully automated, computer-controlled goniometric system that uses a PM-1600F Series™ Imaging Colorimeter or photometer to capture a precise model of a light source’s near-field output. The image data and the Radiant Source Model™ generated from it provide a complete and precise characterization of the light source output that can be used for design evaluation and imported into any major optical design package to allow accurate design of lighting systems. The SIG300 is well suited for R&D and engineering applications for almost any type of light source, from LED die on up.

Excellent data quality is a product of excellent system design

The SIG-300 embodies the accumulated design knowledge acquired through Radiant’s development of multiple generations of source imaging goniometers, as well as over a decade of experience in measuring near-field distributions. Each component of the system — the goniometer, the imaging colorimeter, and the control software — is designed to work together to achieve the level of measurement precision required for near-field models that can be reliably used in optical design software.

The SIG-300 captures and aggregates images and flux measurements from thousands of angular viewpoints around a light source to precisely characterize the source’s near-field output. The SIG-300 supports measurement of both vertically and horizontally oriented light sources, providing the flexibility to measure virtually all common light sources. SIG-300 measurement set up and control is performed using SIG 1.0 software, which organizes the measurement set-up, automates the data collection process, and manages the resulting data.

Radiant Source Models enable efficient optical design

The measurement data collected by the SIG-300 is formatted as a Radiant Source Model™ (RSM) file, which is compatible with Radiant’s ProSource® Software. RSMs contain all of the measurement information, including the image data, so the measurement results can be review in detail at any time. In addition, ray sets containing an arbitrary number of rays can be generated by ProSource for export to other optical and illumination system design software package such as ASAP, FRED, LightTools, LucidShape, Opticad, OSLO, SimuLux, SPEOS, TracePro, and Zemax, as well as general file formats. Because the RSM is a complete description of the light source, it can be used to generate and regenerate ray sets at will — smaller numbers of rays for rough design and a large number of rays for final design — making the overall design process more efficient.