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To focus blue beams on Phoshor wheel in PJs I dismantled there was a simple PCX lens (not round but shaped to be held in rectangular hoder), rest of optics was intended to combine colours and direct resulting beam onto DMD chip.

Thank you for pictures, Tedcs ! ikevvii, what kind of XYZ holders do you have? Can you post a picture? To my uderstanding if one does not like the gang multilens output, the professional way of shaping the beams would be to put long and thin cylindrical PCV lenses side by side in front and...

Yes but before I could search in taobao like I do in Aliexpress: just "nubm" and it gave me all nubm05, nubm06 etc. The Great Chinese Firewall is rising...

Can you guys search in taobao without having an account there? I could do it couple of years ago but since last year it asks me to log in every time (in Chinese of course).

A simple plano convex lens must be the best thing to focus many well collimated parallel beams if you want the sharpest spot. From practice standpoint an aspherical plano convex lens should be better doing this (to avoid aberration!) than spherical but usualy no one cares about aberration and I...

Hi Bob, I am very happy that you have finally received the lenses. Thank yu for all of the trouble! But I would ask you to keep from sending me my 10 pairs now. I am still waiting for stuff which should arrive from DTR, Sanwu and some ali sellers and it takes too long already, much longer than...

Here are holes the focused beams of Osram melted through a 0.4mm thick metal (reflector from a dismantled 3D printer). I took about 1 min. For comparison, this thing with 16 NUBM08 beams made a smaller hole in 15 seconds. At 68V, 3.5A, so the power and power density must have been comparable...

Now techhood has them soldered with a PCB. It is written brand new item but price is cheaper than without PCB. I doubt that it is new...

Yes, 2" plano convex Lens, Thorlabs ref. LA1979-A. If you want to play with positioning of multi lens I would suggest to make a proper XYZ-translating multi lens mount. However I have little idea how to make it for your set up, in my set up with 60mm cage bars I would try to combine these 2...

If one day I buy NUBM31T I would try something like this driver...

Hi CDBEAM, RC and others, Where are you? Already a week and no single like to my previous pictures! I know we live in difficult times now but the life has to go on. Sitting this week in confinement I did some more experiments - this time with a small "wine bottle chiller" from ebay, for which...

If you are not DIY hobbyst any price is fine. Just think how much would it cost you to buy tools, manufacture the block and clean the living place from turnings afterwards. And if the workshop makes a mess, they can do a replacement with no charge. With 0.01mm precision. If I pay 80usd for one...

Hi, Yes, your calculatuons look fine to me. I just would omit ice thermal capacity because even just from chiller it might be not -20ºC. And I add some water into the mix at start to have "full contact" with tank surface. I also doubt that any Li battery can make >3A at serial connection if...

Thank you for watching. I already started to think that no one is interested in this chip and my pictures any more. Tomorrow I will post more test results. These multi lenses are generally crap, this is what we know from trying many previous arrays with such kind of "general" optics from PJs...

And what reason does stop you from using 2 drivers in parallel?

Hi Bob, Here you have your "First Light" Finally I made a robust setup with "water cooling" to test this 24 beams array. Not a current of water as you see but simply an Al tank with water, which would heat as the array is working. Made of a cheap party fridge from ali which only had one crappy...

Hi likevvii, Do you have the same Osram chip as me? On your hand made pics to post 128 it looks that you have one with 20 beams, not 24.

No, I would say you are wrong. The laws of optics (divergence) cannot be ignored in this way. Even for focusing at 200mm an expanded beam would give smaller spot and more power density then raw beam from 31T or 08 sock lens. 2 years ago I have experimented with 08 block and I am sure that the...

Cannot you use 2x 3A in parallel? Sure I saw >3A in ali but they are 5x more expensive.

If you remember my blaster - this could be done wth these small cylindricals from ebay and with ones from GB2 as well to obtain more than 2x-6x expansion ratio!