Auto Importance Sampling - Prescription is set to -1
Question I am using automatic importance sampling and for some surfaces, the Prescription is being set to -1. Why does this happen?
Posts about: TracePro (9)
Rotating objects with TracePro macros.
Question How do I rotate a block in Scheme? Synopsis Rotating objects with TracePro macros. Solution The (edit:rotate) command is used to rotate a given object or list of objects. The simple example below creates a cone and rotates the cone by 45 degrees. ; Create a cone centered at the origin...
Variation in Max Candela value (Bin Size)
Question I have found that the value of Max Candelas reported at the bottom of the Polar Iso-Candela Plot and the Rectangular CandelaDistribution are different. However, when smoothing is ON, the values are much closer. Why is there such a variation in the Max Candela value that is reported?
Demos
"Ready-to-trace" TracePro *.omlb files that demonstrate the capabilities of TracePro. For examples that make use of custom properties, please import the associated property text file into TracePro by selecting Tools/Database/Import, and if prompted to overwrite existing properties choose "No to...
Files of off-the-shelf lenses, lamps, and bulbs from well-known manufacturers
TracePro .omlb files of off-the-shelf lenses, lamps, and bulbs from well-known manufacturers that can be inserted into a TracePro model. Catalog Lenses Edmund Melles Griot - CVI Laser - IDEX Newport - MKS Optics for Research - AZO Optics Rolyn Optics - Ross Optical Spindler - Spindler Hoyer -...
36. Ghost and Stray Light Analysis
TracePro Current Release
TracePro 25.4 Released - 11 November 2025 STEP 1 - Download and install TracePro TracePro Installer STEP 2 - Download and install on Network License Servers Lambda Network License Server Installer STEP 3 - Request TracePro License launch the software and select the option to request a...
Candela Plots - changes to reported values
Question Candela Plots - changes to reported values - Min, Max, Collected Flux, Total Flux, Total Rays, Efficiency
TracePro crash at startup
Question When I launch TracePro, the program crashes (I observe a Runtime Error message). How do I get TracePro running again? Synopsis TracePro crash at Startup Solution "The possible causes of the problem differ if TracePro has run successfully on this PC for a period of time and then it...