FRED v9.110 Released
FRED v9.110 was officially released on October 15, 2010 and contains some exciting new features that we believe make FRED more functional and easier to use. Brief descriptions of these new features are provided below:
Element Primitives are commonly used geometries which can be created and modified through a single dialog in the graphical user interface (GUI). Each geometry is completely specified through a minimal set of parameters unique to the element primitive type, and bulk properties can be conveniently assigned to the primitive from the single dialog interface. The following solids can be created as Element Primitives:
|Torus||Circular Pyramid||Hemisphere Solid|
IES Source Import
Detailed optical sources can now be automatically created from an IES file according to the ANSI/IESNA LM-63-2002 format. Source ray positions are random volume with dimensions equal to the luminous opening, ray directions are generated randomly according to the intensity distribution and the total power is specified in Lumens.
Ray Direction – Randomly according to intensity distribution
A new ray direction specification has been added in support of the IES Source Import feature. This ray direction generates ray directions randomly according to an intensity distribution in polar-azimuthal coordinates. The intensity distribution can be read from a file, entered manually or digitized from a plot.
Improved Raytrace Intersection Algorithms
New raytrace intersection algorithms are being used for surfaces of revolution and tabulated cylinders whose generatrix curve is a segmented curve type. Benchmarks for the new algorithm show factors up to 100X speed improvement, with more benefit being gained the larger the number of segments in the generatrix curve. This new algorithm is especially useful for reflector design, where these curves and surface types are commonly used.
Realized Lumens Output
For sources whose power units are specified as Lumens, the real photometric power of the source (Realized Lumens) calculated by including the source wavelengths is printed to the output window at the time of source creation. This serves as an indicator of the accuracy of the wavelengths being generated during source creation.
For a more complete description of the new features in this release, please read the attached PDF document.