Looks like your camera has taken a few hits

@Zenodilodon

2 жыл бұрын

Sacrifices to the Gods of photonics.

Nice to see you love the desolder station for these 😂 I bought mine specifically because remounting those boards was really awkward. I wish I'd known of the closed can FAC diodes before I started, I was buying the open can direct from OPT and it made it nearly uneconomical to repair. I found that even with an alignment tool I couldn't get the new diodes to output onto the steering mirrors. They were all off to the side resulting in having to demount the initial collimating lens and steer it back where it should be. A real pain! I only had 2 bed reds but ended up having to replace all 6 diodes due to damage from trying to desolder without a station 🙄

Good video. Thanks for doing the OPT. I have the 20 watt OPT laser only Ive built into a projector. Its OK.

well done sir

nice video again yea the reds always crap out for some reason they are ust pushed to hard out of the factory

@Zenodilodon

2 жыл бұрын

There where units with a glass plate glued in front of the laser diodes/the holes in the front of the aluminum. Those units didn't have failures. Out of the dozen + only 3 lacked that part and had toast reds. There is a lot of suspicion though with how the numbers add up and what diodes I know. There is 2w extra they are getting somewhere given the diode selections 12w seems right. I can take a guess that the blue is the most turned up color. The use of open can diodes is becoming more frequent and we are seeing the implications.

@TheOleHermit

2 жыл бұрын

@@Zenodilodon Yes, my W3000-RGB module has 3 'barrels' for the red LDs, but only one LD in the middle. Still don't understand the purpose of the glass plate. 🤔

I have had some success using that style of lens to tweak out beam divergence but its never truly satisfactory nice vid Brother!

@Zenodilodon

2 жыл бұрын

It's hard to beat the performance of a good anamorphic prism pair.

@TheOleHermit

2 жыл бұрын

@@Zenodilodon Sounds like where I need to head next. Can you recommend any LDs that have focusable lens for anamorphic prisms?

@TheOleHermit

2 жыл бұрын

My best effort required a weird zig-zag beam path between the cylindrical lenses. The red LD's beam is off centered, from the get-go and the zig-zag was already there from the mfr. But, as you say, my realignment effort wasn't the perfection that I had hoped for and wasn't worth the effort. We learn from our mistakes, don't we? Ended up redesigning the lens mount. Imagine a stack of 3 rectangles, collectively the same size as the existing lens block. The ends are staggered to mount each lens onto its own layer The the ends are angled upwards to be the same height (1/2 lens height below the beam). I used 2 mm thick extruded aluminum angle, but it took considerable forethought and a couple of refinements of the design. A screw in the middle secures them in place, by being threaded into the module's optical plate. A slotted screw hole allows the focal points to be individually adjusted. Each lens can also pivot on the screw to optimize the left/right positions. Shims can be added/removed from each layer to adjust the vertical position of each lens. This way, the lenses can be glued and dried to each layer, prior to assembly. So you don't need to simultaneously struggle with 3 lens positions and 3 focal points, all before the glue hardens. It's also nice to be able to disassemble it for cleaning the lenses and replacing them accurately afterwards. I scratched a mark into the optimum stack for reference, like using a timing mark on an engine block. Considered tapping the front facing lens mount to add grub screws for fine focal adjustment, but abandoned those modules for OPT, instead. Help this helps. BR 😎

Thanks Zen! Great video and review. Was wondering what your cryptic TM meant 5 days ago. Don't understand why YT hid the video so long. Now I understand that you were giving me a heads up. Thanks again, but it looks like I've arrived too late for the OPT laserist party. 5 days too late and just as many dollars short. 😞 I don't like cylindrical collimating lens, either. I thought they were necessary to independently focus the axis of a rectangular shaped beam. You're absolutely correct that they are a PITA to realign. I'm guessing that the OEM assemblers have jigs to hold the cylindrical lenses in position while the glue dries. On my el cheapo modules, I redesigned those mounts to allow each lens to slide along the beam path for easier/more accurate focusing. That's why I paid extra for the low divergence OPT module. I'm disappointed to see that cylindrical lenses are still being used, regardless of paying more for premium optics. One of my personal pet peeves is mirror mounts that don't pivot at the center of the beam path, which causes lateral beam movement while adjusting the angle. So, I redesigned the dichroic mounts on the el cheapo modules, as well. In the end, I relented and decided to use those modules for lumina projectors, instead. Having watched your video, I've already broken the warranty seal on my module to check the optics, before you've even finished. Glad that I designed my projector to be easier to service, w/o the PSU on top of the LD module... Du~uh! OMG! metal front surfaced mirrors, instead of dichroics?! The 1st mirror on my RGB module is only 2 mm wide? WTF? I've been quite happy with my OPT modules. Not so much, now.🤦‍♂ Still, I've never been an 'ignorance is bliss' kind of hermit and appreciate your candidly honest critiques. I'm guessing that someone had bypassed the key switch on your projector, because mine is fully functional. No, OPT isn't Kvant, with a beam shutoff nor a PASS beam fail board. Asia and Eastern European doesn't need to adhere to US safety regs (nor do US home enthusiasts). But, it looks like there are screw holes to add a beam shutter. I've seen that PASS boards are an option on Kvant projectors. But, I assume that they need to interface with Saturn galvo drivers, so both would be required for retro fitting PASS into these projectors. Forget crowd scanning (I already had). The saving grace is that my 3watt RGB OPT projector w/DT-40's is only ~15% of Kvant's price. Otherwise, I could never afford a personal laser projector in my living room. Instead, I have 3, including el cheapo. BR 😎

Really good video . keep em going .

Lol... Nice to see you have the same CCD damage as I do. Every phone camera of mine from the last few years looks exactly the same.

@Zenodilodon

Жыл бұрын

The cameras here have a short life lol. If not for the old half broken cell phones I get from friends I'd be out of business being a KZreadr lol

@nuguns3766

2 ай бұрын

@@Zenodilodon Finally you answer for this lol, My phone has a couple spots from my 65mw 488nm.

Wow sir thats really helpful seeing that knife edge concept for high powered lasers. Do you think i can build a knife edging lasers using the mirrors that i have extracted from a dvd drive?

Thanks for the video! looking forward to the next one. If someone needed to install a laser saftey block could this easily be done?

@Zenodilodon

2 жыл бұрын

Should be easy. The board should have a shutter output. A linear or rotatory actuator could easily become a shutter with little mount and beam stopping plate.

@TheOleHermit

2 жыл бұрын

@@Zenodilodon Wouldn't a beam blocking solenoid be connected directly to the emergency shutoff button's circuit, because mechanical solenoids/actuators are too slow to be used as effective scan fail devices, which require a PASS board that's connected to the galvos' feedback to instantly kill the LD's output?

Thinking about the thermal expansion differences between brass mounts and the aluminum optical plate. Since the mirrors only reflect the beam, the heat must be transferring from the optical plate (aka heatsink) into the mounts. Have you ever noticed the alignments changing from startup to the end of long sessions of usage? If so, then might that not be due to the irregular shape of the mounts, with the heat moving upward from the bottom?🤔 More knowledge = more questions.😜 EDIT: During replay ;-) I can't help noticing the rough milling on the optical plate, which obviously results in an uneven foundation for the mounts, as well. Precision machined optical assembly? Not. Insufficient QC? I reckon. 😒

0:49 right on your hand is all the proof I need. I won't trust any laser mechanic who doesn't have dead pixels in their camera sensor from getting personal with a diode

@Zenodilodon

Жыл бұрын

100%, it's authentic laser watermarking :P Sacrifices to the Gods of photons!

hello I am in France, I watched your video bravo very well done, small question what and for you the top laser projector

@Zenodilodon

Жыл бұрын

Thanks for the compliment! Here is a list of brands with excellent performance. Kvant RGB Laser systems Lightspace Sollinger/RTI Live Laser Systerms Cittadinni Able Mid range is Unity Goldenstar OPT x-Laser Laserworld Ones to avoid! Artfox Lanling Shinp Emma And anything DMX only. I hope that helps

Why did you also remove all the green and blue mirrors and optics? Would it be too difficult to set up the red knife-edge optics while also aligning them to the existing green and blue beams?

@Zenodilodon

Жыл бұрын

The majority of the lasers where out of alignment not just the reds. The client did not like the factory glue which prevented maintenance as well so we pulled the optics needed for alignments and redid them without glue. Concerning difficulty, personally I did not find it harder or easier than a single color laser head.

@3zuli

Жыл бұрын

@@Zenodilodon I see, I must've missed the part where you talked about all the lasers being misaligned. I once replaced the green module in a very cheap projector and I was able to re-align it with the red and blue beams. But this was obviously orders of magnitude easier than what you did here :)

hello thanks for your nice videos. I want to make an IR illuminator. Should I use CW or single mode laser?

@Zenodilodon

Жыл бұрын

Those are 2 unrelated characteristics of lasers. CW is continuous wave, this means that the laser makes a constant beam vs QCW ( Quasi-Continuous Wave ) like a q-switched laser/nitrogen laser or Pulsed which is short bursts of power such as in range finding or micro machining. Single mode VS Multi mode has to do with how the laser's resonating optics work and their output emitter configuration in laser diodes. Single mode lasers have a very tight bandwidth and often lower power, these are generally lab, telecommunications. Multi mode tends to have a much wider bandwidth but make more power. For this situation you want a CW multi mode, or a laser diode that can always be on and can generate a decent amount of light. The 808nm laser diodes are often the cheapest by power and they work very well for IR illumination, for completely invisible you will need down into the 950nm range to have 0 red glow. Laser illuminators can also appear to give a grainy effect compared to LED so be aware of that, but they do make a ton of light!

@hamitinan6422

Жыл бұрын

@@Zenodilodon thanks for your answer. loves from Turkey

@Zenodilodon

Жыл бұрын

@@hamitinan6422 No problem, I hope it helps you out!

Very interesting to watch as I have two these laser projectors but 10W in stead of 14W. Can I ask where did you get the new closed can FAC red diodes from and how much?

@Zenodilodon

Жыл бұрын

The new diodes where bought through one of the partnered laser companies we work with. I don't know the MSRP since they where ordered in bulk. I don't know if these parts are available to the general public through the factory ( not OPT ). I can check our stock and give you a quote on them if you want when I get back into the shop.

@cdbvideo

Жыл бұрын

@@Zenodilodon Thanks for the reply. At the moment all of my open can red diodes are still working. I was just curios of your source of the caned diodes. I'm in the UK. My mate, Rob of STANWAX Laser may fined these red diodes of interest as he has spent many hours repairing vireos models of OPT projectors. A price of these diodes would still be good to know. Thanks.

@Zenodilodon

Жыл бұрын

@@cdbvideo Ah Rob, I know of him as he and I are part of some of the same forums. I feel bad for him or anyone who has to work on these lol. So far we have pretty much only seen open can diodes fail in units without a glass plate in front of the cut out where the diode goes. We have made our own plates for those as needed it does help. I'll have more information for you later this week.

@Zenodilodon

Жыл бұрын

I have discussed the matter with the other shop mates here and due to the partnership/diodes being unavailable publicly from the OEM the best thing would be to sell them from our facility. They would be around $60 US per/pc about.

@cdbvideo

Жыл бұрын

Thanks for that. I will definitely bear that in mind for if my reds start popping on me. Are you on PL forum? if so what's your handle?

Howww do you know when the beams aren't supposed to line up? I guess it's difficult to find a service manual for this sort of problem, was it by experience or some other secret knowledge Also, how comes alignment doesn't change as distance increases?

@Zenodilodon

2 жыл бұрын

The beams are parallel and do not intersect though they can often look like one beam due to divergence and overlap. If the dots are put on top of one another they will cross. From = to > I don't quite understand your second question, maybe you can clarify?

@phonotical

2 жыл бұрын

@@Zenodilodon I think you covered it in the first answer, being parallel, thanks! Hope you're good

Anyone know where i could find a Y axis replacement galvo or pair to match a Mobile Beat RGB?

@Zenodilodon

Жыл бұрын

scannermax.com/ novantaphotonics.com/product/62xxk-and-83xxk-series-galvanometers/ www.eyemagic.gr/ www.phenixtechnology.com/index.php en.kolo-laser.com/next_category.html?parent_id=2&name=Galvo%20Scanner www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=Laser+show+galvo+kit&_sacat=0

It's always the reds! 14w but only a 5 out of 10?at least they tried! 😅 How did the rolling shutter make parts vanish, that was a good effect, they must be almost in tune with the camera 🙈

@Zenodilodon

2 жыл бұрын

The reds are often the weakest link. The shutter and galvo speed cause parts of the scanned image to vanish. This has been used in music videos to makes some interesting light effects. There was another video about stopping a laser beam where they used a mix of shutter roll and galvo/laser blanking speed.

@phonotical

2 жыл бұрын

@@Zenodilodon do you have a link?

@Zenodilodon

2 жыл бұрын

@@phonotical Here is one done by a fellow laserist I know. You will see how the laser looks due to the rolling shutter effect. kzread.info/dash/bejne/f66MyJZpgLzfcso.html

why they can made more powerful lasers ? if you youse some low power lasers is i know you need a be carefoul with polarisation tjhis is a pain it the ass.

@Zenodilodon

2 жыл бұрын

These are relatively high powered diodes 700mw reds, 1W greens and 1.8W blues. The trouble with making more powerful diodes is that they are usually really wide emitters and tend to have poor beam specs the more powerful you make them. There are high powered single mod CoS laser diodes but those are usually very expensive and only in the IR. It's hard to make a very energy dense thing correctly work in that aspect.

@adredy

2 жыл бұрын

@@Zenodilodon what is the most powerfull dpps laser what you have in youre hand ?

@Zenodilodon

2 жыл бұрын

@@adredy My most powerful one personally is a 2.5W 532nm Lightwave Electronics Half-Note

@TheOleHermit

2 жыл бұрын

@@Zenodilodon OMG! Lucky you! Just Googled it, thinking, "That's the one for me." NOT!: $1650, refurbished, including PSU & drivers.😢

p̴r̴o̴m̴o̴s̴m̴ 😴