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Old 05-24-2008, 08:28 PM #1
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Default HEV blocking sunglasses - blu-ray laser blocking?

I was wondering if HEV blocking sunglasses would be fine with use for a blu-ray laser. These sunglasses block UV, purple and blue light. My concern would be to find one that has a OD at at least 1.85 for a 405nm. That is if the material doesn't break down in an instant when the beam hits. (probably going to be ~70-80mW)

Has anyone tested some?


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Old 05-28-2008, 09:31 PM #2
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Default Re: HEV blocking sunglasses - blu-ray laser blocki

Probably not...
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Old 05-28-2008, 09:46 PM #3
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Default Re: HEV blocking sunglasses - blu-ray laser blocki

hmm, probably wouldn't be very good since the protection is usually just a reflective coating and not suited to the high energy density of a laser
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Old 05-29-2008, 02:22 AM #4
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Default Re: HEV blocking sunglasses - blu-ray laser blocki

Actually, people used to say UV blocking sunglasses would work fine for bluray lasers, plus I saw a post SenKat made a few days ago saying the same thing, I'll see if I can find it.
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Old 05-29-2008, 02:24 AM #5
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Default Re: HEV blocking sunglasses - blu-ray laser blocki

Here it is:

Quote:
Originally Posted by SenKat_Stonetek
Since 405nm is near UV, you can get away with using regular UVA/UVB sunglasses - yes, I said sunglasses - just like those blu-blockers This is the ONLY laser wavelength I would recommend using regular sunglasses for - and they would only be okay for indirect exposure - a direct hit could still burn through I would think, because of the minor wavelength differences, and because of the dilation of your pupils. Best practice - BE CAREFUL !
So yeah, not totally safe but they do offer some protection.
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Old 05-29-2008, 02:38 AM #6
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Default Re: HEV blocking sunglasses - blu-ray laser blocki

Quote:
Originally Posted by chido
Actually, people used to say UV blocking sunglasses would work fine for bluray lasers, plus I saw a post SenKat made a few days ago saying the same thing, I'll see if I can find it.
I am going to turn on the caps lock so you all can hear me. YELLOW SAFETY GLASSES WORK WONDERFULLY FOR BR GOGGLES!!!11onewon

I had a pair lying around (they were my shootin glasses actually) and decided to try them with my 405nm laser. They work exceptionally well! Before the naysayers arrive, I will tell you they block the laser light from a BR as well as my WL goggles do for red.

If you have a 405nm laser, get goggles (or yellow safety glasses). A whole new world awaits you by using your BR laser with goggles. Go outside and point at the lawn, or better yet a patch of weeds. You will see some of the most amazing red colors you have ever seen, I guarantee it. Shine it on your driveway or sidewalk. I found tons of fluorescing minerals/objects in mine.

Enjoy,
Ross
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Old 05-29-2008, 03:54 AM #7
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Default Re: HEV blocking sunglasses - blu-ray laser blocki

Ok I heard you, people, get some yellow glasses too.
Are you happy now? ;D
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Old 06-01-2008, 06:29 AM #8
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Default Re: HEV blocking sunglasses - blu-ray laser blocki

Quote:
Originally Posted by roSSco
[quote author=chido link=1211660934/0#3 date=1212027725]Actually, people used to say UV blocking sunglasses would work fine for bluray lasers, plus I saw a post SenKat made a few days ago saying the same thing, I'll see if I can find it.
I am going to turn on the caps lock so you all can hear me. *YELLOW SAFETY GLASSES WORK WONDERFULLY FOR BR GOGGLES!!!11onewon *

I had a pair lying around (they were my shootin glasses actually) and decided to try them with my 405nm laser. *They work exceptionally well! *Before the naysayers arrive, I will tell you they block the laser light from a BR as well as my WL goggles do for red.

If you have a 405nm laser, get goggles (or yellow safety glasses). *A whole new world awaits you by using your BR laser with goggles. *Go outside and point at the lawn, or better yet a patch of weeds. *You will see some of the most amazing red colors you have ever seen, I guarantee it. * *Shine it on your driveway or sidewalk. *I found tons of fluorescing minerals/objects in mine. *

Enjoy,
Ross[/quote]

Wait... so which color safety glassed am I supposed to get?

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Old 09-23-2008, 04:16 AM #9
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Default Re: HEV blocking sunglasses - blu-ray laser blocki

:P :P :P :P :P :P :P :P :P
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Old 09-23-2008, 05:27 AM #10
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Default Re: HEV blocking sunglasses - blu-ray laser blocki

I would say to be on the safe side and go with the 405nm specific goggles GB.

Some video proof that UV-blocking sunglasses are/aren't safe for blu-ray would be nice. Even if it is, I'm going to drift towards the safe side and spend a few extra dollars for my own personal eye safety.

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Old 09-23-2008, 02:47 PM #11
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Default Re: HEV blocking sunglasses - blu-ray laser blocki

Yea, I can't wait to see how the GB goggles turn out, OD4 is pretty drastic reduction, any little fluorescence should be visible. Even with my sunglasses on I can see alot more thing fluorescing that normally would be drowned out by the violet. :P
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Old 09-24-2008, 12:11 AM #12
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Default Re: HEV blocking sunglasses - blu-ray laser blocki

Do lawn weeds really turn bright red?! That sounds so cool! I'm really excited for DX to get a shipment of 5387 hosts in, then I will have ordered all of my parts!

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Old 09-01-2013, 05:27 PM #13
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Default Re: HEV blocking sunglasses - blu-ray laser blocki

Quote:
Originally Posted by chido View Post
Actually, people used to say UV blocking sunglasses would work fine for bluray lasers, plus I saw a post SenKat made a few days ago saying the same thing, I'll see if I can find it.
hi friends let me know how can we make a glass to see laser rays ?
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Old 09-07-2013, 12:35 AM #14
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Default Re: HEV blocking sunglasses - blu-ray laser blocki

Quote:
Originally Posted by rocketparrotlet View Post
I would say to be on the safe side and go with the 405nm specific goggles GB.

Some video proof that UV-blocking sunglasses are/aren't safe for blu-ray would be nice. Even if it is, I'm going to drift towards the safe side and spend a few extra dollars for my own personal eye safety.
I completely agree with this. Sunglasses of any kind are NOT meant to protect against intense rays of 405 nm light. Their OD can be measured for a specific wavelength, but if your diode runs hot, its wavelength can shift a couple of nanometers. What if the glasses are adequate at 405 nm but not at 410 nm?

Also, they are not designed to take large amounts of power on a small area. A simple 100 mW bluray laser could, when focussed, pass through the glasses in a spot smaller than 1mm2. If the glases are made out of plastic, they could locally melt just like a CD case would.

To each his own, but somehow i prefer knowing i'm not protected over the illusion of being protected and later finding out i was not.
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Old 09-07-2013, 03:15 AM #15
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Default Re: HEV blocking sunglasses - blu-ray laser blocking?

I have a pair of SolarShield blue blockers that I got on sale at Walgreens for $15. They slip over your regular glasses. A few days ago I showed them to my eye doctor (ophthalmologist). I also showed him my 405nm laser, output unknown (probably about 100mW). He ran the glasses through a machine and gave me the results: UVB 0%, UVA 0%, Visible: 15%.

The printout also had a chart from which you could see the squiggly line for UVB and UVA bounces around but is never over the 1% mark. In other words, 0% is not just the result rounded off to the nearest percentage point, but truncated (lopping off everything after the decimal point). Basically these are OD2 for ultraviolet.

Above 400nm it goes up in a diagonal line so that at 405nm it looks like about 5%. Eventually it levels out and stays at about 10% for most of the 400s.

As for your pupils expanding, it has to be pretty dark for that to happen. As long as there's daylight or you have the light turned on, your pupils will tend to stay pretty small.

I certainly wouldn't recommend sunglasses for lasers more powerful than what you have.
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