How Prescription Eyeglasses Lenses are Made / Fit
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- Опубликовано: 4 июн 2013
- 1. Lensometer: The lens prescription is verified from the lab. The optical center of the lens is dotted. This is how we line up the cylinder on correct axis and line up the optical center with the PD given. This allows for the best optics.
2. Tracing: The demo lenses are removed from the frame and placed into the tracer. There is a needle which will follow the frame and a picture of the shape will show up on the screen.
3. Blocking: The PD is entered into the tracer and the center of the lens and the PD are lined up here using the dots from before. A blocker is added to the lens so it can be held into the grinder.
4. Grinding: The trace is loaded into the edger and the lens is placed inside. The machine grinds the lens into the correct shape.
5. Unblocking
6. Safety Bevel: The lens edges can be sharp so a safety bevel is applied to every lens before mounting.
7. Mounting: The finished lenses are inserted into the frame
For more information on prescription eyewear, visit Perfect Glasses USA resource center at www.perfectglassesusa.com/cont...
I was watching this while they where preparing my glasses!
Really ? You whitness the process at optical shop ? Cool
Were*
Same
Same I got glasses
Same bro
the technology behind this is amazing!
Now that is good safety bevel technique. Respect, from one tech to another.
Love to see how they were done before the days of computers..
They were done without computers. There that's how it's done
@@mrpndaman129 Yeah but before computers how were they made.
@@specialized29er86 bruh, just told you
@@specialized29er86 for the plastic lens they are cut using normal scissors to make the glasses the closest to the frame
then using the same tool that's used for the safety bevel is used to make the cut lens fit into the frame
for the glass lens, there are special cutter scissors used to cut the lens then it's sharpened to fit the frame
ofc before computers they wouldn't be able to measure the eye powers so they just use the closest lens i guess have no idea
but talking about the non automatic computer-based tools
Imagine being the person looking at this video and getting to the end and saying hey those are my glasses, LMAO!
The groove is a standard size. The groove is cut towards the front of the lens no matter the rx so the thickness of the lens will be toward the back.
Amazing and it makes you wonder how they did that in times way back when specs were first being used.
This is what I want to know and thank you for sharing!
Sounds like Portishead when grinding finishes. Cool vid! Thanks!
I used to use the exact same lensometer, tracer, blocker, and edger. In fact, I have a video of this AIT edger on my page. The reason I have a video of it is because of the "music" it makes while the feelers are tracing the lens. I've never had an edger make "music" like this and I've used several different edgers over the 20 years I've been doing this.
could u send the video to me using getasile@gmail.com
thank u in advance
I know that this is weird,but I just love the “Beep-a-dee-bee” noise the lense cutter makes at 2:33 lol
perfect video! shows exactly what I needed to know. thanks!
I hope to someday become a lab optician, I admire the one we have at work. I love his job! Cutting lenses, tinting lenses and all that good stuff! :)) I play around at work but it's not the same. Lol
haha I worked doing this for 11 years. trust me, it was NOT fun. :)
the grinding step is amazing.
Thank you.. I am working on a project and this was highly informative!
I could watch this all day, thank you lord
Wow that was awesome I'm getting glasses so it's nice to see how there made
me too. only reason why I'm here
My glasses are in the lab rn, I hope they come in before I have to go back to school...
you posted this a month ago.. you should have them by now. I HOPE ?
So satisfying to watch.
...and I learned something today...thank you
This was fascinating to watch.
I always wanted to know how they were made Awesome!
thanks for the video, creating awareness how prescription glasses are made. very nice. water flow is used for glasses, but for light weight fibre or plastic sheet specs how they are made.
Finally i can live with a peace on mind.
Never knew this, this is cool!
Pretty cool! I wonder how they were made before laser/computer saws and all the newer technology.
They were circles.
This is good to know. I was worried about not being able to get replacement lenses for my frames I bought a few years ago.
I’m watching this because my glasses is being prepared lol
Amazing. And I'll get mine tomorrow afternoon.
Fascinating!!
Ang lupit mo talaga Boss mike!.. isa kang lods petmalu werpa!..
precision engineers hats off B-)
The sound that machine makes during the little rotatey interval bit is terrifying.
That machine sounds like an arcade console after the first grinding :0
Impressive machinary you have, although I really do love my Wecos, they seem to take an eternity compared to what you have there.
WOW That is just amazing💐💐💐
a video shot from our lab at perfect glasses usa
Can you make custom lenses? I would like some Rx lenses for Google Glass.
You would have to send your google glasses to the lab
Could you pls tell me how much does this machine cost?
could i get the instrument s model...getasile@gmail.com
I am ur 500th subscriber
wow thats amazing
What about the initial shape of the lens, though? How do you apply diopter and astigmatism cylinder corrections, or make base-curve adjustments to the lens before cutting it?
A stock lens is chosen that matches the spherical and cylindrical component of the patient’s prescription. It is then inspected with the lensometer and orientated so that it’s position matches the axis of the patient’s prescription. The three red dots placed on the lens allow the optician to mount an edging chuck, so that the edging machine cuts the frame shape that matches the cyl. axis.
Wow amazing 😍😍😍
hie Mr. Ori, can u plz tell me the name of the machine u were using to cut d lenses? M from Melbourne and I want to buy one?
How many days/hours to complete?
Do you work Saturday and Sunday?
Oh i have the same glasses frame used in this video also it has the same color as mine blue , the frame costs in morocco about 25 dollars
Amazing. I'd really like to see a Bifocal lens
Is it possible to grind and polish both the front and back side of a lens?
I wonder how much one of these machines cost? pritty hefty i suppose
Tax right off ..
if lenses are tinted&coated before they are cut for frame dimensions how do they prevent the white edges from the safety bevel and lens edge being uncoated? applies for clear lenses aswell(anti reflection coating, etc )seems counter-intuitive..
Awesome
I wonder if the bother to filter the water to recover the glass powder or just goes into drain.
Ok bro nice explanation
Good stuff! Now only one question, are there any labs that use a less tech option or is this something that most big store Target/Craftsrs/Wally/Costco labs use?
I work in mounting at National VIsion (owner/supplier for Walmart and America's Best) and we have similar tech!
and finally d name of d CNC grinding machine plz?
awesome
i do exactly the same thing you do for a living, but my edger, blocker, everything from the 90s or 80s. lol
so cool
how can i fit bifocal glasses & flat top on edger? I
I have anti glare on mines but there's a "scratch" in the middle of the lens where the machine would hold the lens whilst shaping it. does this happen a lot with anti glare lenses?
Same. It's awful!
How much does all the machinery cowt and where can i buy it?
Mr. Ori I mean d machine u were using @13 & @38 secs respectively.
Wow
Wonder how they are measured with "club" style frames where the lens goes a little bit under the frame
What's the total time from start to finish?
superb
thanks for the vid,im currently learning to make lenses in a personal clinic, I messed up 2 pairs of lenses in 1 day, and I cant tell you how hard it is to squeeze the lenses into those cheap frames.
I wanted to see the process before this where the lens is given its curvature.
So a short job like this to replace a scratched le se takes specsavers NZ approx two weeks so I must wear my old blurry lenses all that time
ok, this is epic
is it possible to make prescription lens for former wrap around sunglasses frames? i don't like the normal style glasses. wrap arounds suit me. I am looking to get some lens made for some of my wrap around frames.
I am looking for them too. I guess they don't make them.
The only places with that is online. No one uses them because they're like safety glasses, they are too big. Just get a pair of glasses like everyone else.
Wrap arounds are limited when it comes to getting prescription lenses for them, because the lens can only curve so much before the vision is totally distorted.
nice video
Well l am getting glasses and this was helpful knowing how it works
I'm waiting for my pair ☺️
this edger is awesome, probably no shattered lenses. smoooth shit
I have an issue with some recently made glasses and I think it is AXIS related. How skilful must the technician be in setting the axis in the correct position when clamping the lens into the machine?
I can get sharper image where I rotate my right lens about 5 degrees clockwise - does this point to an AXIS setting problem?
probably best get the axis checked at the place you got them. it sounds like it's five degrees off.
Great vid!
I don't get it though... how do you fit lenses of different thickness into the same frame? I know all plastic frames have about 1 mm grove to hold the lenses. Would thick lenses (e.g. -5) still fit into the groove?
yes but -13 wpuld stick put in the back
I just wanted to know what the factory does with my glasses. Hopefully they don't mess up the prescription.
Wow! 😮
If you make a scratch on the frames while trying to set the lense, is it possible to remove the scratch or not?
No, once cut the lenses become too small for the equipment. They would have to start over.
good job love from Pakistan
Can we used the old lense that already shape into a new frame?
The old frame was bigger than the new frame.....
Yes, optical shops can do that for you as long as you buy the new frame from them and the old lens is bigger than the new frame. :))
Nice❤❤❤❤
nice
Zenni glasses lol I had those pair.
Cool 😎
hello. pls whats the brand and machines name . thank you
and the price????
Good
price kya hai bhaiya g
why do you have to wait 1-2 weeks to get glasses when they can be made in one day?
Soccer Unbox TV - They have to wait for the lenses to arrive from the factory. The store can’t grind the prescription onto the lense and they are only in charge of fitting the lenses onto the frame.
Obese Hank Not necessarily. It could be because they are ordering them through your insurance and need to wait for it to go through. Or the other scenario is the prescription lens isn’t in stock. I got my glasses prescribed and they put a rush on them because i needed them in 4 days for a sporting event, and I picked them up an hour after I left the office.
@@soccerunboxtv5771 Not everyone has a "normal" prescription. If you have a sphere of less than -6 or +4, or an astigmatism over -2, you have to get those custom made. People will stock lenses with that parameter, but anyone outside those bounds, a manufacturing lab will have to surface it. And after it's surfaced, it takes from hours to days to apply an anti-reflective coating. This is simply just how the lenses are edged, the very final step. Not everything before. I hope this answers your question.
I'm getting mine in a week because they are for work
I got mine for only 2hours lol
i thought they had a whole bunch of precut lenses at certain prescriptions in the back of eye glass shops lmaooooo, but now it makes since why we have to wait 30 min to an hour to get the glasses
i have to wait a whole week before getting them
Lol now you know that would be impossible
This reminded me of the time GREG came to my GARBAGE FORT and grew SKIN on my MOLDY BONES. Thats the way the COOKIE CRUMBLES. Gigga-Ha Gigga-Ha Gigga-Ha Gigga-ha.
Who invented that thing?
Wow had no idea they had a 3D tracer machine.
why no voice?
Y u do grinding manually after machine grinding then what is the mean of machine grinding
The video clearly says why he did manual grinding. The machine leaves sharp edges that can obviously cut people. So he grinds the edges manually to take off the sharpness.
+osaf khan mia isse kehte hai hath ki safai.....lol
I have thick lenses can your company thin them out. I also have the prescription.
Chante Lee do u live by a Walmart if so go there
No. That's not how it works. It depends on your RX and the material's index of refraction. Poly is usually used instead of plastic because its index of refraction is higher. Glass has an even higher index of refraction than poly, but the best material to use is High Index plastic. Do not confuse this with regular CR-39, i.e. standard plastic, as this has the lowest index of refraction of all.
The higher the index of refraction, the thinner the lenses will be for any given RX. Safety lenses are made intentionally thicker, but your lenses, if fitted in a standard frame, are probably the standard minimum thickness for your RX for that material.
If you want thinner lenses, you'll need to buy some Hi-index lenses. Maybe some 1.67's, or, if your RX is really high, some 1.74's.
Too little explanations.
What is he aiming for in the scope when "the optical center of the lens is dotted"? It seems the lens has no marks to start with. Is the optical center always the same as the geometric center? Or is the scope capable to find the true optical center using some special light source?
The PD is enough to align the frame and the lens horizontally, but it does not tell anything about how a particular frame is going to rest on a particular nose, hence no vertical alignment, which should be important for progressive lenses. And what if the user has an asymmetrical nose?
How does the blocker cling to the lens?
Q1: Depending on if there is astigmatism or not its just 2 pairs of lines that you line up in the corsairs. All lenses come unmarked and usually is done manually.
Q2: Not always the same but usually. The scope has a dial that you scroll up and down to view until the optical center is clear on lens.
It varies from person to person which is why adjustments to the frame is made to position the lenses with one's eyes.
The blocker clings to the lens via adhesive pad that is removable.
Can you fit my old lenses in new similar frames ?
No , to fit in a new frame, you would have to have new lenses.
if your new frame is smaller, then yes
Awesome. Tiny writing for people that are waiting for glasses cannot read 🤣🤣
This is late in the stage, showing how the already "made" lens is shaped for, and inserted into, the frames. How about how the lens itself is shaped for a specific prescription?
That's what I'm trying to see and learn. Still looking for a video explaining and demonstrating that.
it's not. the lenses are made on shape of frame you chose.
how are the lenses made to a prescription? this just shows how they are cut to shape right?
goodbastard right, like wtf?
The prescription is programmed into the computer at 1:43
Anthony Harris That’s not the script. Those are lens blanks that already come with the script in them, he’s simply inputting the lens shape parameters to cut the blanks to fit into the frame.
Lenses have been pre-prescribed in all varieties. They have thousands of them with different numbers in stock. They just pick the two that relevant to your eyes. That's my guess.
1. lenses are in boxes ready to go. 2. they are trayed up.. put in trays. order entry takes care of that.. the trays move to the lab. 3. the lenses are BLOCKED.. a small metal block is attached to the back of the lens.. the block is so it can be manipulated in the machines. 4. the tray is moved to the generator which cuts the prescription into the lens. 5. the tray moves to the too pullers.. who divide the trays between plastic and poly... does anyone want to know the rest ?
I always thought the lenses are cut by hand, and when i started working in a shop, the next door neighbour optitian showed me how it really made, and made my glasses in less then 5 minutes.
It looks like they are rather grinded that cut ? Do all materials like cr39, trivex etc are made same way ?
Where I worked, we had 2 generators. very big, very loud machines that after the lens was blocked.. they were in a tray.. and the tray moved down the conveyor into the machine to be cut