ChalmLite

DIALux is the world's leading software for lighting design and marketing tool for luminaire manufacturers. DIALux is free of charge and available in 25 languages. More than 750,000 professional users worldwide, including engineers, electricians and lighting designers, plan, calculate and visualize light for indoor and outdoor areas with DIALux, using real products from more than 190 renowned luminaire manufacturers. From entire buildings and individual rooms to car parks or street and emergency lighting. Create a unique atmosphere with genuine products from our DIALux members and convince with an individual lighting project. Become a DIALux member now. Increase your brand awareness, expand your reach and generate quality leads by connecting with potential customers during the digital planning process. Benefit from the special advantages of DIALux membership. Plan, calculate and visualize light for indoor and outdoor areas.

Radiance is intended to aid lighting designers and architects by predicting the light levels and appearance of a space prior to construction. The package includes programs for modeling and translating scene geometry, luminaire data and material properties, all of which are needed as input to the simulation. The lighting simulation itself uses ray tracing techniques to compute radiance values (ie. the quantity of light passing through a specific point in a specific direction), which are typically arranged to form a photographic quality image. The resulting image may be analyzed, displayed and manipulated within the package, and converted to other popular image file formats for export to other packages, facilitating the production of hard copy output. The major portion of the Radiance package, and the part that is of chief interest to users, is the lighting simulation engine that calculates light levels and renders images.