Want this question answered?
No, a movie projector uses a convex lens.
projector have concave or convex
There are many websites that provide DIY projector plans, But none offer a way to repair a Projector Lens. I would look into how much it is to replace the Lens or the projector all together.
The movie projector uses light to project a picture. These running pictures are what people see when they watch a movie.
Projector Lens
Convex lens because i said so
Convex lens because i said so
The lens focuses light on the retina (fish have one)
place the lens cap in place.
Assuming that the lens is not adjusted, the picture will become smaller as the projector is moved towards the screen. The size of the picture is related quite precisely to the distance, so moving the projector to half the distance will result in an image half the width and half the height. This applies to projectors of all types, not just movie projectors. Most video and some movie projectors have zoom lenses so the image size can be adjusted without moving the projector. Alternatively, if the projector is moved, the lens can be adjusted to restore the original image size (within certain limits).
since you need to show the image on a big screen so you require a diverging lens i.e. a concave lens
since you need to show the image on a big screen so you require a diverging lens i.e. a concave lens