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.

To sum it up though, he’s using an old LCD from a broken laptop, split into two halves. By using a Fresnel lens and two separate optical lenses that are adjustable he can combine the two images ...

Clean the stage glass, all mirrors and projection lenses to remove any stains or debris. ... Your machine may need service if these are broken. Advertisement. Article continues below this ad.

Fujifilm says the projector will have a footprint of 18 cm across when horizontal and just 5 cm when vertical (7 and 2 inches). It will also pack an ultra-short throw lens capable of projecting ...

When not in use, the lens rotates to face the projector body, then the armature folds away, resulting in a compact square shape. Fujifilm bills its projector as a device ideal for museums, ...

This 4K projector’s periscope arm lets you install it almost anywhere. The lens can pivot up and down and rotate 360 degrees to display an image anywhere without moving the projector’s position.

The stock lens has a throw ratio of 0.9-1.5:1, while Valerion was showing off an alternative with a 1.3-2.1:1 throw ratio — better for use in larger rooms — at CES, according to New Atlas.