BUHL 0.500" lens for B&H

[Jason Moffatt]

I have just picked up this buhl lens which shows a 90 degree image. It is 0.500" (12.5mm) so should be a very large image. Its a bell & howell fit but unfortunatly i dont have a bell & howell projector at the moment. What was the purpose of these lenses ?.

[Steve Lee]

Hi Jason,

These were used for rear projection, for conferences and trade stands ect. They have a short focal length so the distance behind the screen could be reduced. They also flip the image for rear projection.

[Jason Moffatt]

Ok thanks steve. It all unscrews, i wonder if there is a way of converting it to a standard lens.