Khatod has released two interesting lens families, with very narrow and very rectangular beams. One family is called ‘clean rectangular beam’. “Most lenses for LED applications in current use produce ...

Engineering experts tell NBC Bay Area the cracks found in the Transbay Terminal superstructure appear to have started at the sharp corners of holes cut into vital steel beams during construction – ...

A long time ago, I made a cycle headlamp using a Cree MC-E led and an Iris lens from Ledil. Result – a pretty good beam, but it turned out a bit wide for my purposes, and the beam does have a hole in ...