Rather than taking individual lenses, he’s starting with the second-hand lens from an old projector. It’s got the required huge aperture, but it’s by no means a photographic lens.

Hisense Vidda C3 Pro debuts with 2800 CVIA lumens, tri-color laser, Dolby Vision, MT9681 chip, Harman audio, and smart AI ...

One very important layout question to ask and answer early on: How far should a projector be from the screen? Determining the ...

Bike headlights are not just for visibility — they are essential for safety, style, and performance. Whether you're riding through city traffic, highways, or off-road trails, the right headlight can ...