Im waiting to here back from Jim (omegabob) on putting the correct filters up on his site, but for now, here is what they are going to be:
This fits perfectly into the lens, without any more additional cutting than the original IR blocking filter removal. It also fixes the focus perfectly as you can see in this photo using a 850df10 that the glass is perfectly in focus:
Some of you may think that there really isnt a filter on the camera for the above pic since it the room looks so bright, but the room is actually dark with some low ambient florencent lights behind the camera that dont light up the part of the room that the camera is looking at. That big glowing thing in the center of the picture is my DSI screen (Endlighten acrylic with 850nm environmentallights.com strips) which is a really good emitter of IR light and blasts the room so bright that you’d think it was day...if you could even see IR light.
Thought Id also throw up a 780df60 filter that is 11.4mm diameter, but 3.7mm or so thickness, thus fits perfectly but doesnt fix the focus. Pic below shows aixiz 5mw 780nm laser with 120 degree line lens on it:
Yeah he has the 850DF20 up but he is going to be putting up a 850DF5 , the difference is that the last number is how much spread around the central wavelength there is. The smaller the number the better it does at only passing the central wavelength. Ive put a request in for 850, 780, 880, and 940 nm so should be up as fast as he can get them made.
Ok, seems that I need a 880-version because I changed my opinion on the LED-strips from environmentlights.com and will instead use the SFH 485 (or SFH 485P). This would be 880DF5, right? And this pretty thing will fit into my PS3Eye and I have nothing more to worry about except removing the IR-filter?
If the filter is the 4.7 mm thick one there is one last thing to worry about. If you screw the less mount back too firmly the filter will come into contact with the glass cover for the camera sensor and most likely break it. I say this because I did that this afternoon! I got another camera and removed the IR and popped in the BP filter and was extra careful will reattaching it. And it works great.
The focus problem is fixed and the IR lights really stand out.
**Update 3/20/09: Filters for those looking for 850nm or 880nm are available now that will correct the focus when inserted between the CMOS sensor and the stock lens.
DO NOT screw the lens all the way down. Doing so will destroy the glass over the sensor and thus destroy your camera.
You need to just screw it down snuggly so that the filter rests on the sensor glass.
Here is the 850DF10 filter link and its transmission curve.
Here is the 880DF20 filter link and its transmission curve.
Costs $20/ filter + free shipping**