Using a 4K monochrome display as a digital negative

[Robert Tilden]

I've been reading the Film to Digital Scanning debate for some time with interest. I ran across this (https://hackaday.io/project/171069-digital-picture-to-analog-darkroom-print) thread on the hackaday site. The author's site (with more detail) is here (https://pierremuth.wordpress.com/2020/04/18/digital-picture-to-analog-darkroom-print/). The project is using a highish (4K) resolution transparent monochrome LCD display as a digital negative for contact printing purposes. While the resolution isn't anywhere near that of an actual film negative it is an interesting experiment.

[domaz]

That is quite a neat idea. I wonder if the display would block UV light. Using it for alternate processes would be an interesting experiment in itself.

[Robert Tilden]

That is quite a neat idea. I wonder if the display would block UV light. Using it for alternate processes would be an interesting experiment in itself.

I believe these are used in low-end photopolymer 3D printing (Stereolithography (https://en.wikipedia.org/wiki/Stereolithography)) with a UV source below, and a tank of polymer above (with platform and lift mechanics). That would imply that it both transmits and blocks UV.