Even STRONGER Garden Laser?!? | Laser classes explained
ฝัง
- เผยแพร่เมื่อ 28 ก.ย. 2024
- Time to test my newest garden decoration laser. A more powerful class 3R unlike the others in class 2. Or is it? I will explain the different laser classes and test if it truly is stronger or yet another mislabeled laser.
Piter Soft's laser build, class 1 to 3B: • Video
Handy PDF-document on laser classes:
www.lasersafet...
(click on the table for a printable PDF)
My Patreon-page: / brainiac75
Video on the four "class 2" decoration lasers: • DECORATION LASERS | St...
Testing my strongest lasers: • Strongest LASERs in my...
Lumens calculation for a laser: • What makes green laser...
Did you miss one of my videos?: / brainiac75
FULL MUSIC CREDITS
Time code: 0:01
"Lightless Dawn" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100655
Time codes: 0:50 + 6:09
"Hiding Your Reality" Kevin MacLeod (incompetech.com)
ISRC: USUAN1700081
Time codes: 2:27 + 9:17
"Perspectives" Kevin MacLeod (incompetech.com)
ISRC: USUAN1300027
Time code: 5:13
"The Complex" Kevin MacLeod (incompetech.com)
ISRC: USUAN1300025
All music above licensed under Creative Commons: By Attribution 3.0 License
creativecommons...
Time code: 10:36
Mix of two tracks:
1) The Shimmering by fran_ky (freesound.org/s/237363)
Licensed under Creative Commons 0 license
2) "Spacial Harvest" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
creativecommons...
ISRC: USUAN1100653
#GardenLaser #DecorationLaser #Brainiac75
I've been a hobby laser fan since my first helium neon laser in the early 90's salvaged from a supermarket barcode scanner. Paid a fortune for a green laser a few years later. Now do laser shows using RGB laser systems that can easily put out 8w into a white beam using all 3 colours. My last eye test, the optician asked if my job involved lasers, as I have a small spot in my right retina that has damage. I can only see it on bright sunny days if I turn my head quickly, I can see a small black speck for a slight moment. SO even if you're very careful, you can still get a flash from a reflection and not notice at the time.
Love that you corrected what you said in previous videos with your new information. We all learn
Thank you. Always embarrassing to make public mistakes, but it is how we all learn from it as you mention. Look for the 808 nm leakage. That's the telltale sign. More mistakes to come :P
@@brainiac75 Hi Brainiac, you never made a public mistake, it's very difficult to tell the difference between 2nd order (internal diffraction) of a primary beam, or a 1st order of a primary beam.
Only a true intellectual is comfortable correcting oneself
@@brainiac75 I don't know if I am missing something but you have not actually checked to see if the 1064 is indeed second order diffraction; you would need to do so by using a filter before the input to your spectrometer. If the peak goes away once you do, then there actually is 1064. Curious to know if you did do that.
Perfect! You included examples of lasers in daily life, explained well the safety classes, and cleared up that 1064nm thing all in one wonderfully edited and narrated video!
Laser rating does change some with the beam power density. For example, a fat beam laser using a beam expander, spreads what used to be a 1mm Beam into about a 5mm beam. The beam makes a great visual effect in fog or haze, but is both much more skin and eye safe as the power density is much lower and the larger beam illumines much more of the fog or haze in the air. This is often used in theatrical laser beam effects for concerts. The laser pumping the beam may be a class 4 laser expanded to a 10mm beam, greatly reducing the damage it can cause on skin or to the eyes as most of the energe does not enter the pupil, so the power that enters the pupil is greatly reduced by the spread beam.
They are much safer than the same power in a very small diameter beam. For example a normal small beam 50mW laser would be a class 4 laser, but expanded to a fat beam, the power density is reduced for a device rating of Class IIIb. Google green Fat Beam Laser Module for examples.
Some garden lasers are rated for the total laser power, for the laser contained, however when split many times with a diffraction grating, the individual beams very often fall into class I or class II laser products. Keep this in mind when ordering garden lasers.
Do you know after diffraction grating how much power is lost for each dot? I ask because kids are playing with 100mw green lasers with diffraction grating lenses and pointing them other kids. I wonder how big is the danger when the beam is not that focused.
@@sabotage3d That would be something to ask the manufacture. The center beam is the brightest and the highest hazard. Some pointers are very small and thus high power density. The safer ones have a beam diameter greater than 3mm, and is typically 5mm. If it makes tiny spots, watch out.
I think there might be something about the laser being split up using diffraction gratings and if the laser is split up, you do something to say that the dots themselves are class 3R even if the diodes are pretty much class 4.
Yeah, that's what I also think. There are so many dots that a single one would so weak that it could be just a class 1 laser by it self. It's like a class 2+ laser being just class 1 because it is shielded inside a DVD-Player...
Your series on lasers is very very cool. I'm still a student in university with a big curiosity for lasers (and magnets!). Big fan of your TH-cam channel! Quality over quantity videos...
Your “Hi” always is sooooo welcoming
I’ve benn looking for this for a while, keep it up Brainiac75 !
I looked directly at a class 3b/4 when I was a kid it was the big ones with a key from a small corner shop now I have to wear glasses as my eye sight is terrible
I'm sure you've considered this, and I would definitely suspect consumer-grade garden ornaments to be less accurate than scientific measuring instruments, but have you checked the calibration of your laser measurement device?
What if you measure one dot after the diffraction grating? Unless you shove your eye into the laser, it is unlikely to get hit from more than one dot at a time.
I used to work on laser micrometers and frequently you'd need to look at the reflection of a scan line, sometimes a stopped beam, all
The way the power cable is plugged into the wall next to your printer is a little sketchy :D
Class 4 is where the fun begins
I agree. Though a high-end class 3B laser like the 450 mW green Hercules is entertaining too ;) Thanks for watching!
I have a feeling I know why.
you know how the DVD/BluRay Laser is class 1 due to being enclosed?
I assume the defraction grating makes it so these lasers are classified lower, as the beam cannot hit you completely unless you void the warranty by taking it apart.
Question about lazerbeamz. I recently found an optical drive in the scrap from a Lenovo laptop, it was marked with both class 3B and class 1. I assume therefore it is a 3B class laser? Quite bamboozled.
Are they testing the laser with the thing fully assembled? I imagine you would get a lower rating if it was farther away and split
5:12 LUVONOX MUSIC GO BRRR.
With the current laser classification rules the death star technically counts as a class 4 laser.
Yes, it's a class 4. Wear safety glasses xD Thanks for watching!
@@brainiac75 There really should be a class for "will set your hair on fire", one for "Will shoot a hole right through you" and of course "vaporizes your entire house"
Thank you for the info.Very helpful.
Next, try lying down into your neodymium magnet at your back and put other neodymium magnet in front of your body.. can the neodymium magnet potentially loosing belly?
Hello Im from Denmark i love you vids
Hi Viben. Greetings from Jylland. Much more videos to come!
@@brainiac75 good we like you videos just found you When i was looking for ferrofluid And i Saw you and Im from Sjælland and sorry for my english
My first heart
1:47 the barcode is your serial number...
Hopefully he sees this just in case someone tries anything weird with the support site
Do you provide free laser safety glasses to the wildlife in your garden?
Oooh, new video.
although i'm not 100% sure, i'm going to assume visible spectrometers behave the same as mass spectrometers. if that is the case, resolution and accuracy are not directly correlated. you can have very poor resolution with pretty good accuracy, and vice versa
Man. . .
Guess what, i have the same Printer at Home, after 5 Years, it still works like new.
Even if it was a typo I’m pretty sure the company would get a write up. It would fail the regulations set by the NRC at least, in the US
I have no idea what the consequences would be here in Europe. Bad cases would probably be prohibited from further sale. But they are not very likely to be discovered before someone gets hurt... Thanks for watching!
My day had started and you made it
Huh?!?
HUH?!?!?
Maybe you need to quadruple the distance between the laser and your aperture? Because your aperture has 4x the area of the aperture they test against.
Could be. My logic just was that the 7 mm aperture is probably to mimic the eye's pupil. A beam divergent enough to fill out a 7 mm pupil at 14 mm distance, would fill out a 15 mm pupil at roughly 30 mm distance. I probably just should make my own 7 mm aperture and place it at 14 mm distance and have the laser power meter's sensor behind it :) Thanks for the input and watching!
@@brainiac75 Interested to see how that goes if you end up making one, anyway, thanks for the literal years of amazing videos. Stay safe and keep 'em coming!
Aren't the lasers used in the product classified in themselves from their manufacturers?
Then the final product is classified in it's intended use, which is WITH filters and diffusers?
9:18... In basically clean air (no high levels of suspended particles) if the total Laser's Beam falsl on the active part of the LPM's Sensor... The distance from the sensor in a typical room will not make a difference. Just like increasing the size (diameter) of the beam will not change the LPM reading as long as ALL of the Laser's bean falls on the Active Sensor area.
True, but in this case there is a double-axis diffraction grating in front of the lasers so distance matter. Even at only 30 mm distance quite a lot of the smaller beams diffracted from the main beam don't hit the sensor. I think that's how they get away with such a low classification. I guess, the classification system was not meant for lasers like this. Or they just put on the sticker they like to ;) Thanks for watching!
Well done telling us what we should watch out for when using laser products and also making an educational video that's also entertaining. 😃
I'm curious, does your PS4 sound like a jet engine too? 😅
Glad you like it, zUltra. I love making these laser videos. Definitely not the last dubious laser I will test :D And no, my PS4 is fine despite its age. But then again, I barely have time to play games, so it has mostly been used for playing blu-ray movies... Thanks for watching!
every day when I see these things I'm like: one day your eyes will have trouble seeing and you'll have to look no further than this thing.
Garden lasers are supposed to be strong because the diffraction grating splits that power into multiple lower power dots. Let's just say that the total power of the green laser was 10 mW, the whole laser projection would be kind of boring.
If 1MW laser was available did it will come with own power plant? Or it will be connected to Tesla Megacharger (this is charger for Tesla Semi, it deliver ~1 MW power)
A 1 MW continuous beam laser would require its own nuclear power plant or a Death Star to run it x) Thanks for watching!
@@brainiac75 The smallest reactors SMRs (Small Modular Reactor) have 50MW (I mean reactors that produce electricity in power plants, this not the smallest one, there is smaller reactors used in marine), typical reactors have 300 - 1500MW, almost every nuclear power plant have more than one reactor, bigest operational nuclear power plants have ~6 reactors, ~1000MW each, my country doesn't have any nuclear power plant, my country is backward, we have bigest in europe coal power plant, that use 100 000 tonnes of lignite everyday, 1 tonne every second :(
Another thing that is even more of a hazard now are the newer cheaper green laser pointers on eBay. They don't have a current regulating driver so when you slap in a lithium ion they hit 100mw easily. It's sad but also kind of impressive that they are so cheap and yet able to take the abuse. The more I see these cheap overspec laser products the more I fear more and more restrictions will be mandated. Glad you and others inform people because it cuts down on possible misuse and injury.
Also it is not a mistake, you are indeed getting 1064 from the ND:YVO4 which has made it past the KTP output coupler.
i wonder what class the laser in my CD recorder would be if taken out of the product
(and I've also discovered one of the optical drives in my desktop doesn't have a sensor to tell it when the draw is fully closed, so if the draw is prevented from closing all the way, it will sometimes think the draw is fully closed)
If it can record on an optical media, it is likely quite strong. Class 3B typically. I wouldn't worry to much about laser light escaping from a not fully closed drawer. The lasers inside an optical drive are focused down to a tiny spot on the optical discs. Meaning it is not focused anywhere outside the drive :) Thanks for watching!
These things make me nervous. A family friend has one of these in their front garden pointed at the house, sometimes the beams shine through the window. They bought it at a cheap shop, no idea of it's safety or quality.
A single beam from far away is not likely to cause damage, but I would still be careful with it. Lasers are never meant to be looked into - unless they truly are class 1 ;) Thanks for watching!
Once again a very interesting and informativ video! I never thaugt that those things can be thus dangerous
Do you remember me from the plasma ball video? Cause by mine the glass broke and I am speculating about how dangerous it would be to turn on!
Thanks, Lukas! Buyer's beware when it comes to Chinese build lasers (and aren't they all?). I don't remember exactly what you commented. I go through so many comments, that they all blur out at some point in the future :) It is relatively safe to turn on. The center piece will still have a high voltage but at very low amperage. You won't see any sparks from it in normal air. It could burn your finger from the electric arc if you touch it though...
@@brainiac75 no need to worry! I know you have more important stuff to remember! Thanks for answering
So it's a should be safe but be smart and don't do it situation
It's quite a good power supply, that you could have some fun with if careful. Try placing one end of a fluorescent tube on the center and turn the plasma ball on. Should light up fine. Just don't touch any metal on the fluorescent tube - it can burn you. What you don't want to do is directly touch the electronics under the plasma ball.
Those things aren t very powerful i guess it will be like 10-15 watts, however i will still not recommend to touch it xD
@@lukasvondaheim You should know the basic high voltage safety rules if you want to use it. It will put out more current than you'll ever get through the glass normally and if you pass current through your body it does slowly damage and kill some of your cells. Dont do it for hours. So in short, it wont kill you, but it's also not healthy, so avoid coming in contact with it.
4:05 In short Class 4 ones hurt at least your eyes ... if they don't strait-out cut you in half.
In case if you think I'm kidding with the cut a person in half, I might remind you that the *TERAWATT* lasers in fusion research also fall into class 4.
Holiday laser projectors, yeah way overpowered.
I enjoyed can you make more videos about radioactive ☢️!
Why do you need a stronger yard lazer any way?I remember my friend had a strong one and it burned scribed the middle finger so the who naborhood could see lol
i love this chanel
Well, I think the label is written wrong purposely, if not, they would fail inspection and couldn't sell the product because it is not safe.
AHH your from denmark, thats why im seeing so many laser rays coming from skive
The laser class system needs a serious overhaul. Every subclass and whatever needs it’s own number. Sure it’s fine for people who work with lasers, but for the random person who buys a laser pointer and sees that one is a 2 and one is a 4, they don’t know the massive jump only 2 numbers could be.
FINALLY HE IS BaCK
Only been gone for a month as usual ;) th-cam.com/users/brainiac75videos
@@brainiac75 yeah 😊😊
Jem&Fix is the same company as Harald Nyborg which is known for low prices and a lot of variation in quality. So don't expect anything to be correct.
If I am not wrong, you are trying an speaking accent of GreatScott
Are u an laser expert :-)
For at undgå add'ikk'ere - er den købt i Jem&Fix?
Ja, den kraftige "class 2" laser er købt i Jem&Fix for mange år siden. Jeg har ikke set den til salg de seneste år. Nok også bedst med tanke på, hvor usikker den er at bruge. Den 'nye' class 3R købte jeg i Silvan i januar sidste år. Har af gode grunde ikke set nogen i butikkerne i år, når de er tvangslukket. Men generelt har de ikke rigtigt været på hylderne de seneste år. LED er ved at overtage. Men de kan købes overalt på nettet. Har set en på nettet med blå og røde lasere. Var bare lidt for dyr efter min smag ;)
@@brainiac75 - Tak, har kigget efter dem uden held (eller, måske er det heldigt taget i betragtning når det kommer til stykket - de er ikke gratis, ikke brugbare til det helt store, og ikke legetøj :-)
eBay har nogle kraftige 5-15W engraving lasere til p.t ca. £100, men jeg tror en CNC fræser i miniformat er bedre egnet til mine formål. Måske en idé til en opgradering af dit arsenal?
I wonder if we are own creators in a paradox lol.Reasion why day that is because wasn't that tiny pump diod size as half room in the 70s?Now it is in a cheap small casing lol
How did I just read the title as "laser cheese"?!
Is this a danish channel since you did know what it was on danish or what aha
No entiendo
As a kid I used to stare into cat laser pointers... :l lucky I'm still able to see
yo this man cursed got 666 subscribers lmao
When I was a kid I saved up and bought a laser pointer. I have no idea what class it was, but I loved it. I used to shine it on screens in movie theatres, into homes around my house, just had a good old douchebag time.
I used to really enjoy looking into that laser, man. It was cool. You can see CRAZY stuff in unbelievable clarity by looking into one; all sorts of dancing lights. From the time that I was a kid, all the way to now, I've had 20/10 vision. I sat too close to the tv all my life, and I even used to stare at the sun until it didn't seem too bright, too, and yet my vision is in the 99th percentile. I think people look for dangers to blame their deformities on. If a person were born as quasimoto, by the time they hit 25 they have a list of reasons they're so fugly. Is it unfair that I did all that stupid shit and still have much better vision than you? Yeah totes. Life's unfair cupcake lmao
Thanks for sharing. Dumb people often rely on luck; there’s no shame in that!
It’s snowflake not cupcake but I understood what you were trying to say. Keep trying hard buddy! You are doing great!
Lol 1 MW laser??
Surely, it can burn anything
ههه
ههه !؟
TH-cam unsubscribed me from you. Really TH-cam???
This is not your garden variety channel.
That's for sure. Though one of my older videos is on gardening... sort of. Awakening moss with acid: th-cam.com/video/IwCAPtp3_cU/w-d-xo.html
Thanks for watching!
@@brainiac75. I think acid would wake up most things.
when a laser product doesn't stand a chance at being used for its intended purpose!
So true. Mine have never been outside and decorated any house xD Thanks for watching!
3 E
I'm not sure you can hear my farts in the comments.
ههههههههههههههههههههههههههههههههههههههههههههههههه !؟
ugh, those garden lasers should be banned. when I was driving amazon it was not pleasant to be rushing christmas deliveries only to be regularly shot in the eye by those stupid lazy-person decorations.
"highly specialized lasers for cosmetic treatments"
Instructions unclear. Labeling some hundred megawatt pulsed laser class 1C.
First
LOL not quite
First to be mentioned in the video ;) Thanks for the laser once again, Piter :D
@@brainiac75 you are welcome
classes suck, just look at mw only
They're probably just lying about it. For instance, I know what a
Well if the ones make them just have to pass for import in a foriegn nation they send one that works that they bothered ton test and make sure it worked then send the cheap ones of varied output as they wont be tested and as a business they wont be legally accountable and if they lose the ability to sell in the importing country they simply change the name of the comapany alter the product slightly pass the testing again for import and regulation and send the cheaps in mass again. China isn't going to face any consequences for violating regulations in another nations. They wont even stop exporting fentinol chemical bases that mexican drug cartels use to produce the drug and smuggle into the US causing over 50,000 deaths from overdose and at such cheap rates they are still able to profit despite tons of it seized and drug value is at least 10x less then in the US. Like they can still make millions despite effectively tossing 90% of the product they produce in the garbage and means a large quantity of chemicals is being exported and consistently out of China to Mexico but they wont regulate that so expecting them to ever bother with laser diodes is a joke.
9:55
Wait till you find 150 Mm calipers on ebay!
styropyro agrees
@@kswiorek That’s 150,000,000 meters. I think.
@@chri-k um .....no
Remember, always wear safety glasses!
Even in supposedly weak lasers, it's better to be safe than sorry!
_especially_ if they’re green
Even weak lasers could cause damage. Even though class 1 lasers are safe, if taken out of its original component, it could be dangerous. Any classes above that could still cause eye damage through unmomentary exposures (class 2-3r) and momentary exposures (3b and 4) 3bs may be safe at low levels, but you should always wear goggles for class 3b and 4 lasers.
1:34 - The smile says "Yes, Mine is bigger"
If you had a 1 MW laser, you might get employed by the LEGO Co. to make new molds.
They know that if they actually spec it out to within legal limits people will complain that it's too weak and crappy, so they just say it's "legal" on the box so stores will sell it.
How is the laser meter constructed so that it isn't damaged when used? I'm curious on the method it uses to measure the light.
I'm not an expert on it, but I believe it uses a peltier element/thermocouple to generate an electric current. The laser heats the element on one side and the heatsink around the power head cools the element on the other side. This temperature difference generates an electric current. The more power the laser emits, the more the element is heated and the stronger the electric current. The shown model will handle up to 20 watts if all of the sensor area is used. 20 watt focused down to a small spot would probably damage the sensor's coating... Thanks for watching!
@@brainiac75 I'm guessing it would have to be a coated copper plate with some thickness on the front mounted to the peltier device. Or maybe even a little vapor chamber to distribute the heat even better. Peltier elements cant tolerate terribly high temperatures and their surface is normally a ceramic plate, which isn't great for distributing heat from a single point.
Finally! A good TH-cam video from the God of Lasers Himself
God of Magnets*, but yes
Mh... He is very good indeed. Very professional also but the real God of Laser is styropyro.
The god of lasers is styropyro. He is not far behnd tho.
@@Squeaky_Ben you're right.
*What if they team up*
@@spacedaway World domination.
"if you're unsure of their true classification"
If you don't know what frequencies a laser emits, laser glasses are no guarantee of safety. Or if the hazard is secondary emission and not the laser itself. No laser glasses can protect you from the broadband blue/white thermal emissions of a 100000 degree fireball.
They are probably just measuring just 1 of the "stars". The manufacture I bet considers each star a beam.
Good video as usual. I like that you are not afraid to admit that you made a mistake. Keep up the good work. I’m from Denmark too.
Fun fact:You can see TV remote controls flash of Infrared radiation using your devices camera try it out (because your devices camera can see a bit more than the visible spectrum)
Also because TV remote controls use Infrared radiation so that's how TV's know what button your pressing. Try it and you'll believe me.
If I have a wrong grammar don't blame me English is not our primary language but secondary.
Question: what kind of magnet would you recommend for magnet fishing? I'm sure you have heard of it but if not it's where you tie a magnet on the end of a rope and throw it into a river or lake. Then slowly bring it back to shore. You are hoping the magnet attaches to something valuable that someone dropped or threw in the water. You also retrieve a lot of junk so it's cleaning the body of water you are at which is a plus. So it needs to be strong enough to dislodge something heavy from mud but small enough to throw.
Neodymium magnet.
I remember the sticker from the bottom of a PlayStation 1, it says "CLASS 1 LASER PRODUCT" - I always thought this is some self marketing meaning that it's a good quality laser :D
Haha, it could be read as 'first class' x) Thanks for watching!
@@brainiac75 I'm not just watching, I'm a supporter on Patreon ;)
Ah yes, all the way back to 2019 if you have the same 'avatar' on Patreon. Thank you so much.
always love watching your videos, and thanks for correcting yourself........learning is never a one-shot thing, we always make mistakes and learn from them as time goes on......keep on making amazing videos, want to see more magnet videos
actually, i had a science question myself i was curious about..........do you think that aluminum that has been broken down by gallium, can be reformed into a solid state? been all over youtube, and cannot find an answer to that
Thanks for this amazing experiments I really enjoyed it 😀
You're welcome, Sofia. Much more experiments to come :)
I remember shining these in my eyes because I liked the colours
Very informational. You give clear examples and details about each laser classes. Keep it up.
Bist du Deutsch? Hätte ich jetzt wegen dem Akzent vermutet 😅
Hi! Glad to see a new video, you are amazing.
Thanks, Lucia. Much more videos to come!
A few months ago I picked up a $15 laser show like this for indoors (with fan) and if the specifications are to be believed, it uses a pulsed 50mw green and 200mw red.
It's definitely pulsed and definitely bright, with no infrared filter. I'm not 100% sure the green is a DPSS beam, however, since the package size is so small (smaller than the thinnest pen-style green pointers. I'm just so much out of the loop with laser tech, I didn't think you could get a green 50mw direct diode for under $20 ?
What if when monster magnet meets Hydraulic Press?
There are some streets I do not walk down because of these things.
Sounds 4:30 like a good cat scarier
what kind of class are laser scanners for bar codes and can they damage your eyes?
im pretty sure another revision is needed if Styropryo exists
It's 8 comment please 👍❤❤❤🧡