I have one of those clocks that projects the time onto the wall/ceiling and it's getting really dim. I don't want to fix it but rather build my own that displays my own information (time and weather info).
Would it be possible to place a negative transmissive graphical lcd in front of a high power led with lens to achieve this effect? I have never used graphical lcds so I'm not very familiar with their properties and I'm not very experienced with optics. Would the opaque portion let any light through? I figure a 10-15 deg lens for the led would project the right size on the wall but would this be in focus or is some sort of focusing lens needed?
Google and forum searches yielded no information on such a project but maybe my search terms were bad.
If anyone can provide some insightful input I would be grateful!
Thanks
-GTech
Would it be possible to place a negative transmissive graphical lcd in front of a high power led with lens to achieve this effect? I have never used graphical lcds so I'm not very familiar with their properties and I'm not very experienced with optics. Would the opaque portion let any light through? I figure a 10-15 deg lens for the led would project the right size on the wall but would this be in focus or is some sort of focusing lens needed?
Google and forum searches yielded no information on such a project but maybe my search terms were bad.
If anyone can provide some insightful input I would be grateful!
Thanks
-GTech