Dr. Susan Lea's home page
Since 1985 we have been delivering optical ray tracers to the engineering and education communities.
Back in 2015 -- after 30 years -- we adopted the policies of open source and free distribution. This is our way for thanking the community for these many years of support. Updates continue; we are currently offering BEAM4-208 as a .jar file, ready to download and run, here...
BEAM FOUR is now freely available worldwide to all users:
Dr. Susan Lea's home page