Light Emitting Diodes (LED’s) offer longer lifetime, smaller size and greater mechanical ruggedness than most other light sources, including incandescent, fluorescent, and high intensity discharge lamps. As a result, LEDs are replacing traditional light sources in numerous illumination applications, from traffic signals to instrumentation. However, the physical structure of LEDs is more complex than most lamp sources, making it more difficult for the system designer to construct an accurate source model in software during the design phase.

Radiant Imaging supports the optical designer of LED based products with two products, the SIG-300™ and Radiant Source™ Models. The SIG-300™ is a Source Imaging Goniometer System used to precisely characterize the near-field output of a light source. The system consists of a fully automated, computer controlled goniometer system and a Radiant Imaging PM-1400 or 1600 Series Photometer.

Measurements performed on the SIG-300™ is are to create a Radiant Source™ Model. This data format is compatible with our ProSource™ software. Ray generated by ProSource™ can be imported into many other optical and illumination system design software packages. For many commonly used LEDs, individual Radiant Source™ Models are now also available from Radiant Imaging as well as a number of LED manufacturers.