Hi all,

today I talked to a co-worker of mine Shakor who designs optical stuff, and he explained to me, that using UV is a very bad idea, as it destroys everything, also lenses! "Our chips are the biggest". Go for bigger structures for the start, so use green light for example. Here one could also experiment with lens assemblies made for professional cameras like old M42 lenses made by Leiz, and Zeiss Jena.

Also the DLP chip is not nice for our application as we do not need a 3 color LED drive embedded in the chip as we have only one wave length and so we dont do RGB and we dont need a sync between LED and DLP. So go for higher resolution "monochrome" just the mirrors, e.g. 2K

Very important is to get a uniform intensity, which requires a special lens assembly as one needs to transform the gaussian-curve intensity diagram of any LED into a square diagram as this square intensity is projected to the mirror assembly and then on the chip.

I am sure, that we can get professional help with the optics stuff, as long it is visible light.

Regards,

Ludwig

On 4/8/21, David Lanzendörfer leviathan@libresilicon.com wrote:

Hi So in the data sheet of the DLP2000 they say that UV light will reduce the life span of the DMD chip. However. Sam Zeloof is using a DMD display from an overhead projector and it seems to be working ok. Should I take the chance and take this 30 Euro chips from Mouser, although the data sheet says, UV wouldn't be advised? I mean, I still can replace the chip afterwards through a more expensive UV chip, when the rest of the machine works...

Cheers -lev

---

Libresilicon-developers mailing list Libresilicon-developers@list.libresilicon.com https://list.libresilicon.com/mailman/listinfo/libresilicon-developers