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, ...

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 ...

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.