Is it a good idea to buy cheap laser goggles off ebay?

[DeadlyDihydrogenMonoxide]

I am going to work with a Sony SLD1239JL-54 diode. From what I read, the diode is 650 nm and is a class IIIb. (Here is the data sheet for more info http://www.b0f.com/Laser/Data/SLD1239JL.pdf). The driver for it is going to range from 12mA to 420mA. I found a 650 nm safety goggle off ebay that is only $7.99. I just want to know if there are greater risks buying goggles that cheap or from a site that is not directly from the manufacturer? Here is the link for it that goggle that I have found. 650nm 660nm Red Laser Protection Goggles Safety Glasses | eBay Please tell me whether or not I am being scammed or if this is the wrong type of goggle for it. Thanks.

 

[oahu99]

Those may be fine for low power lasers, but often cheap glasses like that aren't even laser glasses, just normal safety glasses.
What I suggest is you buy a set of Eagle pair glasses from survival laser.
I know they are more expensive, but trust me it is cheaper than costly eye repair.
Just stay away from those generic glasses and buy Eagle pair.

 

[KRNAZNBOY]

The very cheap uvex and no brand glasses are good up to about 300mw

Then you should invest in better glasses, for your safety.

:beer:
-Matt

 

[DJNY]

Most cheap goggles for reds are more than fine. Also got a cheap pair and I can´t even see a red dot from my 500mW through glasses. Only when shining on a white surface directly in front of me.

 

[Cata]

I also bought a 300mW 660nm laser diode and cheap blue goggles on eBay.
I did an experiment:
I pointed the (un-focused) laser to a photo cell and measured 160mV.
Then I put the goggles in the way and got 90mV.
Ambient was low, I checked and didn't make any significant difference.
I feel those goggles should have attenuated more and therefore are not really "laser" goggles, just colored.
However I'm new at this so I can't tell if my measurements are relevant; can anybody comment?

 

[Pi R Squared]

Those cheap goggles should be fine but get something better when you can.

Cata, in my opinion that is probably not a very accurate way to test those goggles. The best way is to use a laser power meter and shine a focused beam directly through the goggles at the LPM sensor.

Alan

 

[upaa27]

If buying a cheap one I would use http://www.amazon.com/DEWALT-DW0714-Laser-Enhancement-Glasses/dp/B00093DJ4M These work pretty well but I have NOT tested them for a 650. They are red filtered so they will filter anything below that general range of red. Just dont use the same wavelength or higher. I hope this helps, but I might check some of the more reliable options.