![]() ![]() How to do this, and meet requirements? BEAM FOUR shows you every portion of the system and lets you edit rays, surfaces, and wavelengths to deliver the necessary image fields. ![]() Here's a very quick look at the variety of optical systems that BEAM FOUR JAVA EDITION handles: a crossed Czerny-Turner spectrometer is to be set up to give good grating clearances over a specified range of wavelengths, without vignetting, while preserving good spectroscopic resolution. Also newly formulated are transmission gratings: uniformly ruled, varied-line-space, and HOE ruled in both surface and volume phase holographic (VPH) technology. New since release 168 is a much-improved coordinate break function that permits easier analysis of bent optical paths and tolerancing of angles and offsets, and an improved Map display capability, like last year's, but now with complete text file output. Also included (starting back with release 128) are Gaussian scattering surfaces that let you distribute and monitor the delivered light intensity using the 2D histogram function. Combined with our MultiPlot feature - which delivers a grid of spot diagrams - you can explore how your design is influenced by the available parameter choices. Maps were added last year: these are color coded diagrams showing how your image quality varies over your field, or over a 2D parameter space. Release 208 includes all the features of our previous releases: Multiple on-screen layouts with various views and scales that give you a variety of views of your optical system. The source code and full documentation can be downloaded from GitHub. Our new open source policy makes the entire set of BEAM FOUR project source files public, under the GNU General Public License Version 2. Updates will continue to the project in GitHub, but there will be no further releases. jar file, ready to download and run, here. We are currently offering BEAM4-208 as a. This is our way for thanking the community for these many years of support. Delivering optical ray tracers to the engineering and education communities Since 1985.īEAM FOUR is now freely available worldwide to all users:īack in 2015 - after 30 years - we adopted the policies of open source and free distribution. ![]()
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