Author Topic: Are the green glasses from Chinese kits safe?  (Read 6322 times)

alurpal

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Are the green glasses from Chinese kits safe?
« on: July 12, 2016, 07:18:48 AM »
Obviously, I am not shining the laser directly into my eyes, nor is the laser facing any direction but down.

But I know some lasers can cause damage just with reflections. I am using a 2500mw laser from gearbest.

From browsing the laser safety wikipedia page: https://en.wikipedia.org/wiki/Laser_safety, am I correct by assigning a class 3R to my laser?

Thanks guys!

kibodwin

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Re: Are the green glasses from Chinese kits safe?
« Reply #1 on: July 22, 2016, 02:49:17 AM »
Ross posted this to a different post... I don't know enough about this to help,sorry

Re: Laser enclosure
Reply #15 on: July 20, 2016, 05:30:08 AM

    Quote



 Why are laser goggles are colored the way they are?
 ( More info  is also here..........http://www.warnlaser.com/knowledge-summary-laser-lasers

Looking at the color wheel, you can see what colors are opposites of each other - i.e , green is the opposite of red, and orange is the opposite of blue. If your laser is green, the opposite color (Red) will absorb more of the laser's light than any other color. Since the object is to reduce the amount of light reaching your eyes, the laser's light needs to be absorbed by the goggles.

 So, protective goggles for green lasers are red, goggles for blue lasers are usually orange (Because the wavelengths for green and blue are so similar, many goggles are simply orange - these serve very well at protecting from both wavelengths) and goggles for red lasers are either blue or dark green.
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Re: Are the green glasses from Chinese kits safe?
« Reply #2 on: July 22, 2016, 04:56:38 AM »
You want to make sure the 'nm' rating of your safety glasses matches your laser diode 'nm' rating. The color does not matter.
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dreamaker

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Re: Are the green glasses from Chinese kits safe?
« Reply #3 on: July 22, 2016, 05:19:08 AM »
I originally bought the red/orange(depending if your color blind or not) for that frequency I take it. Now is that inherent to the color, or does that plastic contain filtering agent in the plastic or glass?

ROSS

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Re: Are the green glasses from Chinese kits safe?
« Reply #4 on: July 22, 2016, 05:26:36 AM »
Found this about the blue light lasers.  KIBODWIN  mentions suntan cream as a joke on a post earlier in the week...I was amazed to find info on this subject in the page below.!!

www.wickedlasers.com/laser-tech/blue_light_hazard.html

« Last Edit: July 22, 2016, 05:40:44 AM by ROSS »
.
Lasers are wonderful machines..not ONLY  can they cut a finger off BUT  they can also cauterise it at the same time.....

SAFETY -  IS NO ACCIDENT

dreamaker

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Re: Are the green glasses from Chinese kits safe?
« Reply #5 on: July 22, 2016, 06:35:13 AM »
Good info to think about.

Agastar

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Re: Are the green glasses from Chinese kits safe?
« Reply #6 on: July 22, 2016, 08:44:36 AM »
Yes, thanks for sharing that info with us. I'm thinking this should probably be a sticky maybe?

alurpal

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Re: Are the green glasses from Chinese kits safe?
« Reply #7 on: July 22, 2016, 11:17:03 AM »
Found this about the blue light lasers.  KIBODWIN  mentions suntan cream as a joke on a post earlier in the week...I was amazed to find info on this subject in the page below.!!

www.wickedlasers.com/laser-tech/blue_light_hazard.html

Thanks for this. I definitely will be buying proper goggles as I do not trust the ones from China.

kibodwin

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Re: Are the green glasses from Chinese kits safe?
« Reply #8 on: July 27, 2016, 12:28:09 PM »
Don't forget the suncream!
Sorry couldn't resist
:-)
More seriously I have thought of using a digital camera behind the safety glasses to try and measure the effectiveness of the glasses. I am looking for info on this but so far I can't find much (also not had much time for this research). I have some green glasses shipped with the laser and bought some wavelength adapted glasses that are red and the red cut out more of the intensity but I have no way of measuring the amount of the wavelength blocked (the red glasses sold said they block 60%of the light..).
I would suggest a welding helmet,sun cream and a straw hat!
;-)
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kn4ud

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Re: Are the green glasses from Chinese kits safe?
« Reply #9 on: July 27, 2016, 05:36:56 PM »
Ok, this is very good to know. My question who is a trusted supplier to get the glasses we need where we all don't go blind.
Allen

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Re: Are the green glasses from Chinese kits safe?
« Reply #10 on: August 12, 2016, 12:15:42 AM »
I got these one from Amazon. They cut the brilliance of the beam compared to the green glasses. They came in a zippered case. They only work over small reading glasses, if you need glasses.
https://www.amazon.com/gp/product/B009T6RN0G/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1
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treinbert

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Re: Are the green glasses from Chinese kits safe?
« Reply #11 on: August 12, 2016, 04:16:19 PM »
I have a small question regarding laser protection. I would really like to build a full case around my machine and include a viewing screen. Where can you buy relative cheap some sheeting, which does the same as the glasses?

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Re: Are the green glasses from Chinese kits safe?
« Reply #12 on: August 12, 2016, 04:25:50 PM »
Take a look at ePlastics.com
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KompewterMan

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Re: Are the green glasses from Chinese kits safe?
« Reply #13 on: August 13, 2016, 09:59:26 PM »
The effectiveness of the glasses depends upon which frequencies of light they block and the frequency of the laser light. As these blue/purple lasers are very close in frequency to UV light which can be very damaging to the human eye I would highly recommend that you use laser safety glasses to protect your eyes. Even if you are not looking directly at the laser spot, it can be very damaging to your eyes with repeated exposure.

Prolonged/repeated exposure to short wavelength light (blue/purple/UV) greatly increases the chance of developing cataracts in the lenses of your eyes.

I just received my Banggood 2.5W laser system and got it operating. The green glasses that came with the system seem to do a good job at blocking the blue/purple light.
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Re: Are the green glasses from Chinese kits safe?
« Reply #14 on: August 13, 2016, 10:07:47 PM »
I bought the orange plastic goggles from the company who makes the Emblaser DIY laser kit. These are expensive but are large and fit over my glasses better than the green ones that come with the machine from China.
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