What is Sub-surface Laser Engraving or a 'Bubblegram'? Technology Explained

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  • Опубликовано: 24 дек 2024

Комментарии • 638

  • @thom1218
    @thom1218 7 лет назад +586

    @4:03 - Sorry, wish you would have researched this more since it's quite interesting. The lasers in these machines HAVE to be pulsed, using a method called Q-switching to obtain high peak-power pulses that can couple their energy into otherwise transparent material. These pulses, incidentally, are in the megawatt range and over a very short time span, usually a number of nano seconds. These lasers use several IR diode lasers to "pump" a Nd:YAG laser crystal, which is frequency doubled from 1024nm to 532nm (green) in order to be able to pass into the glass target object. Interestingly, this laser technique is used in tattoo removal machines to penetrate skin and oblate sub dermal ink . CO2 lasers can do a continuous etch on glass because glass is opaque to the near IR long wavelength of CO2 lasers, and therefore they can only etch the surface. Also, because glass is opaque to CO2, more energy is transferred directly to the glass, rather than passing through it, which allows the CO2 laser to remain in CW operation (continuous wave, i.e. not Q-switched). So, the operators of these bubblegram machines do not have the option to do a "continuous blast". However, using fewer dots/bubblegram will shorten processing time and wear on the laser components. So in that sense you're right about fewer dots being more economical.

    • @MakersMuse
      @MakersMuse  7 лет назад +132

      Thanks! Really glad you commented as this is the kind of information I was trying to find but just couldn't, there was nothing much out there. I can't edit the video, youtube killed annotations, but will pin your awesome details so people can get that extra bit of info.

    • @danl.4743
      @danl.4743 7 лет назад +15

      Maker's Muse RUclips killed annotation?

    • @MakersMuse
      @MakersMuse  7 лет назад +63

      Yes, as a creator we can no longer 'annotate' videos like add notes or corrections. It's frustrating.

    • @cabletie69
      @cabletie69 7 лет назад

      Maker's Muse well that certainly saves you from having to make the effort. Perhaps this channel should be named thom1218?

    • @mikepenske9943
      @mikepenske9943 7 лет назад +39

      +cabletie69 - Are you trolling? I don't see what's wrong with pinning the comment for those who are interested...

  • @RyunForsman
    @RyunForsman 7 лет назад +30

    Back in 1998 I worked for a company in Wisconsin that had one of these YAG laser machines, and I had the job of operating it. It was absolutely fascinating to watch that machine work! I can also attest to the fact that optically pure crystal is super crazy Fragile. The slightest touch to each other or a semi hard surface and they would ship. Keeping inventory was fun for sure.

    • @MakersMuse
      @MakersMuse  7 лет назад +4

      I can imagine! Mine already has a few small scuffs :(

  • @hacksmith
    @hacksmith 7 лет назад +246

    Whoa that's really cool! Thanks for sharing!

  • @davisdiercks
    @davisdiercks 7 лет назад +72

    I CANNOT THANK YOU ENOUGH FOR EXPLAINING THIS. My grandparents had one of these with a pair of hands in prayer and a cross, both in the middle of the glass cube and 3D (it was even on a fancy multicolored rotating pedestal) and it always baffled me how it was made. Now after who knows how many years I know how!! I feel so enlightened!!!

    • @MakersMuse
      @MakersMuse  7 лет назад +9

      Welcome! I was exactly the same, I had no idea and no one I talked to did either lol

    • @davisdiercks
      @davisdiercks 7 лет назад +3

      Yup, I shared this with my grandpa to let him know. He's a woodworker and I'm sure he'll find it interesting 😊

    • @betholschowka8865
      @betholschowka8865 6 лет назад +5

      We had one that was of Jesus on the cross. It was given to us along with a rotating, color-changing base. The effect led us to call it, rather blasphemously, "disco Jesus".

  • @georl1
    @georl1 3 года назад +3

    Just had one made of my mom and dad in a heart shaped glass. It cost over $250 to make but is gorgeous and will last a lifetime. Thanks for the info on how they're made.

  • @PAPO1990
    @PAPO1990 7 лет назад +74

    I always figured it was lasers, but my assumption was multiple beams converging on a point, I had always underestimated what a difference focus makes

    • @MakersMuse
      @MakersMuse  7 лет назад +9

      Apparently that is an alternate technology used for specific plastics but I couldn't find ANY info on it so decided to omit it instead of spreading false information. If you dig anything up let me know!

    • @PAPO1990
      @PAPO1990 7 лет назад +2

      really? ha, here was me thinking I'd guessed entirely wrong :P
      But yeah, never saw or knew anything, just a guess I'd made many years ago, and until now had seen nothing about how it's actually done.

    • @MrModTwelveFoot
      @MrModTwelveFoot 7 лет назад

      Yup, I'd always assumed it was two converging beams. This is just as cool though.

  • @spikekent
    @spikekent 7 лет назад +73

    I'm always pondering how stuff is made/created, never quite satisfied with just seeing it.
    Thanks for another superb explanation Angus.

    • @MakersMuse
      @MakersMuse  7 лет назад +1

      It was fun to research and get to the bottom of it.

  • @Linguinestick6
    @Linguinestick6 7 месяцев назад

    Used to watch your videos a lot when I first got into 3D printing around 2015, then didn't see your videos for a while. I wanted to know how the 3D images were in objects and found this video leading me back to your channel after a couple years.

  • @3DPrintingNerd
    @3DPrintingNerd 7 лет назад +173

    So, you're saying I should engrave glass in my Muse?

    • @MakersMuse
      @MakersMuse  7 лет назад +20

      Yes!!! You need less power than you might think, so do some small tests first - and a solid image will work better than greyscale. Dithering is the best way to get gradients :)

    • @ElectraFlarefire
      @ElectraFlarefire 7 лет назад +7

      Angus: Have you tried focusing a normal CO2 laser below the surface? Maybe with dithering or such?
      I know getting a full '3d' look would be tricky without the software and machine, but being able to do 2-3 layers could be fun to try on some 10mm thick glass.

    • @nottingham82
      @nottingham82 7 лет назад +5

      You need very little power ;) I can do it with a 2.5 watt diode laser.

    • @Mitch3D
      @Mitch3D 7 лет назад +1

      I'm actually very curious why we can't just use a CO2 or diode laser to sub-surface laser engrave dithered point clouds if you are controlling the Z-height of the lens to focus it.

    • @legomasterdan1
      @legomasterdan1 7 лет назад +1

      glass is opaque to a CO2 laser.

  • @technicpiledriver7732
    @technicpiledriver7732 5 лет назад +1

    Im allways happy to watch your videos

  • @LaserRanger15
    @LaserRanger15 4 года назад +1

    I've been in the industrial laser biz for many years. The sub-surface marking it pretty fun to watch, for sure and a nice effect. Once upon a time it was really special and you paid big bucks but now they sell the crystals at gas stations for $5.00. Good video.

  • @savitriagnesiamurti8683
    @savitriagnesiamurti8683 3 года назад +1

    thanks for sharing this. My son wanted to know how our travel souvenir was made. We ended up watching this video together. 🙏🏻

  • @elfenmagix8173
    @elfenmagix8173 7 лет назад

    Being in NYC, I see a lot of these being sold in the streets with various items etched inside.
    But lo' & behold! there are some that are made acrylic (most of these are), but the image inside was etched onto a thin sheet of acrylic and then put into a mold where liquid acrylic is poured in and allowed to harden. This creates a "cube" (or any other shape) with the image inside. Most of the times it is hard to detect but if you turn it to the side, the image flattens and almost disappears, signifying that it is a 2D image and not a 3D image in the "cube." Some times, there are flaws where you can see the acrylic paper seams about suspended in acrylic before it hardened.

  • @richardnelson581
    @richardnelson581 6 лет назад +3

    Years ago I did a job for Polaroid ,were we laser cut acrylic polarizers for an Arab sheik jet . When you rotated the polarizer it was a variable light filter ,we focused the laser and scribed the polarizer to say Polaroid . It lite up the word when it went opaque .

  • @Cryocide
    @Cryocide Год назад

    Thank you! This video is just complex enough to help us understand how it’s done, still simple enough for the average person to understand it, and even suggests that there’s a more complex process involved for those who want (or don’t want) to dig deeper.

  • @tsunaminaut
    @tsunaminaut 2 года назад +1

    Thanks!

  • @chrisharris7390
    @chrisharris7390 7 лет назад

    I used to do this for a living in Las Vegas, the best lasers were the German "Vitro" lasers, not the ones from China. The laser uses a multi-faceted head to engrave hundreds of thousands of "points" inside the glass, to do that the image is converted or created as a cloud of dots. The laser is actually multiple beams that focus at a specific point to create a fracture, meaning that you can even stick your hand in the beam but the laser does not burn until you are at the exact XYZ of the beam that you have told it to burn at. One day a customer came in as part of a convention and fell in love with it -- turns out he was a big timer with Walmart and before you know it the back room where I worked was filled to the ceiling with boxes of glass for me to make displays -- displays for every Wal-Mart in the country. From what I understand they are still pressing "print" on the display files I created to this very day, even though I haven't been at that company for nearly a decade. So if you walk into a big box store and see one of these it might actually be one of my files from 2006 :) Oh and they do last forever, if you can avoid an accident that breaks the glass there is absolutely no fading whatsoever. I still have quite a few decade-plus works that look as good as the day they were made.

  • @pakxo.
    @pakxo. 7 лет назад +2

    I did try to search on this thechnology but couldn't found any high quality video but now I do Thank you

  • @CortezEspartaco2
    @CortezEspartaco2 7 лет назад +3

    I've always wondered about this. I never would have guessed that the images are composed of tiny fractures. My guess was that the image was somehow constructed out of a flexible fiberglass fabric and then had molten glass poured over it into a rectangular mold, but couldn't figure out how they would avoid air bubbles. Also, I for one think that "bubblegram" is a fantastic name.

  • @StevenGamesWHC
    @StevenGamesWHC Год назад

    So what type of glasses/crystal can this be done with? For example can you do this to sapphire sheet/block?

  • @frankpeck1448
    @frankpeck1448 3 года назад

    Thank you, for demystifying a curiosity of mine, for years!

  • @Tyriama
    @Tyriama 7 лет назад

    I have one of these from many years ago. Always been a cool piece that my mother keeps in addition to our pictures. Neat little things.

  • @Engineerboy100
    @Engineerboy100 4 года назад

    Nice explanation thanks for taking the time to share, great job on the video too!

  • @MoesFingers
    @MoesFingers 7 лет назад

    Uh sir your production quality is on point.

  • @jeremeymiller3406
    @jeremeymiller3406 2 года назад +1

    Would like to see an update with how they implement the HD quality and how they are able to do multiple do do multiple images now giving it a live action effect pretty cool I always was curious about this myself think this is a going to be a good anniversary gift idea

  • @mikemike7001
    @mikemike7001 7 лет назад +28

    Pretty neat. Would also love to see some videos on affordable "hobbyist grade" laser engravers.

    • @MakersMuse
      @MakersMuse  7 лет назад +14

      There's a few low cost kits, but I've been cautious on using them because they have zero safety considerations. Touch a hotend you'll get a burn, shine a laser in your eye you're blind for life... Don't really want to promote that kind of thing to be honest.

    • @mikemike7001
      @mikemike7001 7 лет назад

      A nozzle burn I can take. Blindness definitely not. I've read a little about the Muse - the laser device not the Aussie ;) - but that's not what you and I might call "affordable". I was hoping someone made a less-expensive unit with all the proper safety interlocks. Maybe someday.

    • @tomgray971
      @tomgray971 7 лет назад

      Like Trinus or Mooz?

    • @telespallabob7136
      @telespallabob7136 7 лет назад

      Just for the record: Fablab genova made an 80W CO2 open source laser cutter implementing all safety interlocks like commercial machines usually have. The total cost was around 2000€ for a 1250x780mm work area. They did a great job. You can see the machine in this video ruclips.net/video/_z17imYLvGM/видео.html

  • @l0I0I0I0
    @l0I0I0I0 Год назад

    Can you create a vacuumed space, hole in the glass, or are all cuts filled with something? What is that something?

  • @UnicornShooter
    @UnicornShooter 7 лет назад

    I work in a machine shop where I run the laser engraver to engrave text on aluminum parts. We have clear plastic fixtures to hold parts. Once I had the laser focal point inside the plate and marked without a part and got a bubbling effect inside the plastic like in theses objects by mistake.(having a focal point a little above or below the surface can leave a cleaner marking the part)

  • @john-paulhopman318
    @john-paulhopman318 7 лет назад

    I was thinking an x and y axis laser whose combined heat leave a mark where they cross. Thanks for the clarification.

  • @vanessavk3336
    @vanessavk3336 3 года назад

    Great video ! the internal engraving .

  • @1937Brett
    @1937Brett Год назад

    Where do you get the materials? And what devise is best to start?

  • @emiliofernandezlavado279
    @emiliofernandezlavado279 2 года назад

    Amazingly interesting and useful! Thank you!

  • @cujoedaman
    @cujoedaman 7 лет назад +2

    I wonder, could this be used in some way to make printed circuits or memory inside the cube? Not specifically these particular lasers, but something along this line. I can't think of what it would be used for today, but I'm thinking like the data cubes they used in the original Star Trek or the crystals in Superman '78.

  • @fuadmaayeh8813
    @fuadmaayeh8813 3 года назад

    Thank you for posting this video

  • @SeanWMODonnell
    @SeanWMODonnell 2 года назад

    Oh thank God. I needed this.

  • @jayeshchaudhari7922
    @jayeshchaudhari7922 4 года назад

    You have worked on laser engraving can you tell me how to convert a image to engraving format

  • @danthor45
    @danthor45 7 лет назад

    You just solved the biggest mysteri in my life. Thanks

  • @Coco.Qwerty
    @Coco.Qwerty 2 месяца назад

    Thank you! I had been wondering about it for a while!! 😊

  • @JamesRousseaux
    @JamesRousseaux 3 года назад

    Thanks for explaining.

  • @rsstnnr76
    @rsstnnr76 7 лет назад

    You found something not on youtube? Impressive.

  • @willyherrera5069
    @willyherrera5069 Год назад

    Love it same here looking around how is made Thanks homeboy

  • @Foebane72
    @Foebane72 10 месяцев назад

    I've seen a few of these in the past, and I figured it was lasers, but it's still beautiful to look at them with these 3D etchings inside solid glass/crystal/plastic.

  • @sublimationman
    @sublimationman 7 лет назад +2

    It's interesting. Some 20+ years ago I saw one of these in operation in Las Vegas. The guy realized I was into the tech side and he explained it all pretty much like you did. He also mentioned there was another technology at the time that used 2 lasers at 90degree from each other and where they collided it put a bubble. He said that he had done a lot of research before buying though and the other system was more money and much harder to calibrate (both lasers at a needle point size must hit each other exactly) and that they would get out of alignment very easy which would either end up with no image or one that looks fuzzy. That other company is probably long gone now.

  • @just_eirik
    @just_eirik 2 года назад

    What about the ones that are spheres? Do they require much more math and processing time? Or do they make them into spheres after they have done the laser work?

  • @lancejones9320
    @lancejones9320 4 года назад

    Thank you for making this. I had one made in Germany in 2006. It didn't cost that much and I still cherish it. Always have been curious about how they did it.

    • @optimumimage360videobooth4
      @optimumimage360videobooth4 4 года назад

      Lance Jones , what company made it ?

    • @lancejones9320
      @lancejones9320 4 года назад

      I wish I could remember. I'm in the military. They had a both in the post exchange in Grafenwöhr or
      Vilseck. I am a year away from retiring. I've always had a dream to do that for a retirement job.

  • @d.w.v.3553
    @d.w.v.3553 2 месяца назад

    Does anyone know where I can purchase slabs of glass for the laser engraving? Manufacturers or distributors?

  • @bhaskarrijal
    @bhaskarrijal 8 месяцев назад

    always wondered! thanks for this one

  • @brezovprut4431
    @brezovprut4431 4 года назад

    I ve seen recently sub-surface-like resin 3d prints? How do they achieve it, and what is it called like?

  • @mathteacher2694
    @mathteacher2694 4 года назад

    Thanks,you answered one of my oldest questions.

  • @justinnagy9206
    @justinnagy9206 Месяц назад

    Thank you so much for explaining this in depth! Well done sir! 👌

  • @BrotherEmmet
    @BrotherEmmet 7 лет назад

    FINALLY! Thanks Angus for explaining!

  • @randiwaxman879
    @randiwaxman879 3 года назад

    Thank you for answering my question

  • @BelviGER
    @BelviGER 5 лет назад

    I have one of those that is like 15 years old.
    They 3d scanned my dad and me and then custom made it while we looked on.
    It blew my mind of several layers. It was the first ever 3d scan I saw, the bubblegram itself was amazing technology and then they used a lego plate as a bed to put the glas on because apparently lego plates have ridiculous tolerances

  • @TheMan4407
    @TheMan4407 6 лет назад

    Thank you! I was getting so sick of these "how laser engraving works" videos on youtube. You actually explained how it worked!

  • @fannytorres1781
    @fannytorres1781 2 года назад

    Thank you so much for explaining it!!

  • @skylerockspecial
    @skylerockspecial 7 лет назад

    Should I be able to mount a laser to my prusa? Because we’re not burning things there wouldn’t be any smoke either. Any idea on where to buy a clear cristal block?

  • @helene6379
    @helene6379 3 года назад

    Cool, thanks. Realy intresting.

  • @sissywekesa4084
    @sissywekesa4084 7 лет назад

    We appreciate this info. My sis and I are ready in using one.

  • @reginaldburton4018
    @reginaldburton4018 3 года назад

    Is there a way that I could use some sort of 3d printer to make a hollow 3d object inside the glass???

  • @GeeksThroughoutTime
    @GeeksThroughoutTime 7 лет назад

    Hey Angus...do you have any suggestions for pearlescent/iridescent PLA filaments?

  • @SuperUltrachan
    @SuperUltrachan 7 лет назад

    Angus about 3d scanning what do you think about the Matter and Form desktop 3d scanner?

  • @timberry7832
    @timberry7832 10 месяцев назад

    I enjoyed your video and I want to learn more. Keep going. Best wishes

  • @josephwisniewski3673
    @josephwisniewski3673 4 года назад

    Good video. I already knew how this works, and you explained it very well without getting too deep.

  • @FreedomsLife1776
    @FreedomsLife1776 2 года назад

    Quite remarkable; thanks for making this. My office just got a congratulatory cylinder sub-surface etched and I was very curious how it was made!!!

  • @skillsswapper1657
    @skillsswapper1657 3 года назад

    Hi, which manufacturer would you recommend for this 3d crystal laser engraving machine?

  • @matthewbryan2353
    @matthewbryan2353 3 года назад

    Love the video, I saw this the US around 25 years ago and loved it. I then started a business with no idea what I was getting into but loved the learning experience and traveled the world sleeping in airports to find the equipment to do this.
    I now have a laser machine in my garage that I’m wanting to get running again and try find some better low cost modern 3D face scanning technology as this was a real drawback in until 15 years ago when I gave it away.
    That said I love this kind of technology and have moved onto CNC router and have just ordered a 5 axis water jet cutter.

    • @LeeJames-cg3ig
      @LeeJames-cg3ig Месяц назад

      hi,May I ask how your project is running now, I think we can open a section of the

  • @aeaeaeaeoaeaeaeaeae
    @aeaeaeaeoaeaeaeaeae 4 года назад +1

    I always thought that there were multiple lazers, and that they would intersect in one spot to make that spot essentially have the power of 2 or 3 lazers on it. Would've never thought this is how they do it, great video!

    • @BryceSchroeder
      @BryceSchroeder 2 года назад

      I used to think this too! I wonder if we just both thought of that when we saw the objects, or if that was a misexplanation that was in the wild at some point, or if there are actually machines that do it that way.

  • @JustinDrentlaw
    @JustinDrentlaw 7 лет назад

    Awesome video Angus! Very informative. Loved it.

  • @imohanwer
    @imohanwer 5 лет назад

    Does Laser emitting Lance itself shifts focal point or it goes back and forth to do so

  • @stefanarhart7153
    @stefanarhart7153 Год назад

    Thanks for the explanation. Bougth a pegasus in glass today because I was curious. Now I know.

  • @Dave45784
    @Dave45784 9 месяцев назад

    Do you have a link to where I can buy one of these machines please?

    • @jamiegaudet6008
      @jamiegaudet6008 7 месяцев назад

      u ever find any?

    • @Dave45784
      @Dave45784 7 месяцев назад

      @jamiegaudet6008 I did but I have found the machines to be super expensive and only 1 Chinese supplier :-(

  • @BaTo79
    @BaTo79 7 лет назад

    I worked for a company in Mexico that makes those engraved cristals, and the models used are very similar to the ones used for 3d printing. So if you have some models that you want on cristal, you can look for a local shop that can engrave them for you.

  • @moodberry
    @moodberry 4 года назад

    In the 1990s I worked for a company that bought a color laser printer. At the time, that printer cost $20,000. Crazy how prices for tech changes so quickly.

  • @mechadense
    @mechadense 6 лет назад

    Is there some service that allows for very small orders for a reasonable price (like Shapeways or iMaterialize for 3D printing)?

  • @SiD14091992
    @SiD14091992 7 лет назад

    What's the name of the software at @4:35 ? Guess the same technic can be applied for 3d modeling of human faces to some extent and can be 3D printed in a full color 3D printer

  • @maciej12345678
    @maciej12345678 3 года назад

    3:39 if you scan material for points of refraction then aplay mask of shift focus you can engrave on any surface and in into object

  • @christopherfrawley2560
    @christopherfrawley2560 4 года назад

    So if I have a lazer engraver what program would I use to make a bubblegram? I have a snapmaker 2.0 and I would love to experiment with it.

  • @magellanicraincloud
    @magellanicraincloud 7 лет назад +5

    I've always been curious as to the specifics. Thanks Angus.

  • @czyxx71
    @czyxx71 5 лет назад

    We have a Boss 1630 and an Epilog. Can they be converted/adjusted to do this?

  • @sto2779
    @sto2779 3 года назад

    Will this work on clear acrylic?

  • @munnurajwansi5543
    @munnurajwansi5543 3 года назад +1

    Hello Sir/Ma'am How can I bought your products??

  • @vladislavshevtsov143
    @vladislavshevtsov143 3 года назад

    I've been studying in Hangzhou 3 years ago, what did you do there?

  • @doc_ineeda_win5834
    @doc_ineeda_win5834 Год назад

    you got video on how to use co2 on pictures on glass i have k40

  • @yesjared950
    @yesjared950 2 года назад

    Can you do this on a 1mm thick glass or even 0.8mm

  • @BGPhilbin
    @BGPhilbin 7 лет назад

    +Makers Muse - Thanks for the video. I've had one of these items since my 1999 trip to Russia, where the technology was pioneered. It was remarkably inexpensive for the time (turns out using US cash in Russia at the time got you a bit more for your money). They were very proud of the precision with which they were able to make these little pieces of art and the quality of crystal they were able to obtain for it. Exports to the US that I found were extremely expensive and of lower quality (though I have no idea why that was the case, other than possibly saving money on the lasers, possibly). It was almost a decade before I started to see any version of these show up in the US and it's always been a conversation piece. Nice to see that my explanation of their creation was pretty accurate - thanks, again!

  • @davidwelling6822
    @davidwelling6822 7 лет назад

    would it be possible to buy a cheap regular CO2 laser engraver and add a Z-axis yourself?

  • @pokeitwithastick7869
    @pokeitwithastick7869 7 лет назад

    Please; Where did you have your cube made? (website/company name?) and; how much was it ? Thank You.

    • @pokeitwithastick7869
      @pokeitwithastick7869 7 лет назад

      Never mind! I found places,no sense giving a company free advertisisng on your page,right? ;)

  • @fatoumatadiarra8993
    @fatoumatadiarra8993 Год назад

    Thank you for your video🙏 I was wondering the same question and I confirm this is the only video that I found with real explanation.thank you for your informations.

  • @davidmcdonald3314
    @davidmcdonald3314 7 лет назад +1

    That's pretty cool Angus - and you've shone light into some aspects of the process I'd never heard of or given any thought to. Kudos

  • @ElectricBillAlbright
    @ElectricBillAlbright 2 года назад

    Very interesting. Its amazing how the focal point is so precise that no melting or etching takes place as its entering the glass crystal. When I was going through school at ITT tech we learned a little about lasers and optoelectronics. We made holograms on pieces of clear glass like window glass. It was a pretty simple basic procedure using a beam splitter and a helium-neon (HeNe) laser in a sandbox. Beam was split to provide your object beam and the incidence beam. The best thing we used for an object to make a hologram out of was an old television tube. The detail in the holographic image was awesome. The one thing that is really odd and sometimes hard to explain is, if you break that glass every single piece of broken glass will have the entire image on it. This is because the image is a frequency of light imbeded into the glass each piece has that frequency of light in it containing the entire image, might be very small on some pieces but its all there! 👍
    I've worked with the older type (rear projection) television sets as a technician repairing them. Some TVs made by Philips/Magnavox used an optical coupling fluid between the CRT and lens. This was ethylene glycol the same chemical used for automobile coolant except it didn't have any color dye added. This fluid is considered optically transparent. It has a particular diffraction index. This index is taken into consideration for how the lenses are cut or made. The refraction index is that effect you get when you put a pole into a swimming pool and it looks like the pole is bent where it enters the water. Different fluids have more or less of that effect than other fliuds. They used that phenomenon to obtain the focus on the mirror/screen. They also used it as a cooling fluid for the CRTs to transfer heat away, being those little picture tubes (CRTs) were driven pretty hard in order to get decent brightness of the picture.
    Optoelectronics is an amazing technology. Just FYI, the term "laser" is an acronym for; Light Amplification by Stimulated Electron Radiation. 💯👍

  • @jordanrodrigues8265
    @jordanrodrigues8265 3 года назад

    Just a guess: Wide aperture thus narrow depth of field plus a laser graver?

  • @hiba
    @hiba 6 лет назад

    Any idea if this can be done on clear resin blocks?

  • @mr.es1857
    @mr.es1857 3 года назад

    What is difference pulse frequency on uv laser machines?

  • @jorelmendoza8842
    @jorelmendoza8842 4 года назад

    Neat! We have one of these and engraved is my dad.
    I remember he mentioned about lasers and I was curious but was too lazy to search up

  • @canaan5337
    @canaan5337 7 лет назад

    I have always wondered how that worked ever since I saw one of those things it's bothered me for years I'm glad someone finally made a video about this

  • @1937Brett
    @1937Brett 10 месяцев назад +2

    Is it crystal or glass?

  • @harunm292
    @harunm292 Год назад

    thx for video i have question i just start to 3d internal engraving bussines but it is hard to make 3d its lookin ok but taking a lot time
    do u know same software convert 2d to 3d lss or mbf format thx again

  • @Tonicwine999
    @Tonicwine999 7 лет назад +1

    Fascinating! Always wondered about how they did this. The idea I had in my head was completely wrong. Thanks :)

  • @viny12345678
    @viny12345678 6 лет назад

    Why isn't the crystal spherical or cylindrical? Wouldn't that give a better 3d-effect or would it actually be worse?

  • @robertmatetich2898
    @robertmatetich2898 Год назад

    Where can I get one done in Arizona?