Are these Laser Glasses Safe?

[FF11]

Hello guys. So this is probably just my second post on the forum but keep in mind I am NOT a total newbie to the hobby.
Anyways, I am to receive my FIRST high powered 405nM (violet) laser (ive owned other wavelenghts) and am not sure if I have the correct goggles for this wavelenght.

I ordered an Eagle Pair- Eagle Pair® 190-470nm & 660-760nm Laser Safety Goggles since they are the most reliable. I am not sure if these goggles are suitable which is why I am asking for any advice.

Note that these are not an orange colored glass, rather it is greenish blue.

I noticed that it DOES NOT block blue light from my blue-light digital clock. (I used to own an orange colored pair and those sure blocked the blue light).

When I directly looked at the sun, the goggles didn't seem to block much of the light (could not stare for more than 5 seconds). I understand that sometimes a laser can be BRIGHTER than the sun which gives me a bad impression about the goggles.

Does anyone have any experience with these goggles and UV or 405nM light?
The laser will be over 700mW+.

Any advice is greatly appreciated.

 

[hakzaw1]

its 405
so yes
BUT what is the OD on the frame
AFAIK you would require an OD of 4 or maore
700mW of 405 is one of the fastest burners, smallest and thinest beam and VERY dangerous (our eye WIDEN coz they dont se it as being bright and allow in MORE alser) and you cannot blink fast enough to avoid some injury if into the eye at any angle
IF directly into the center of your eyes lens that 700mW will become >7W
~100 mW of 532 blinded forever one eye of Ranger Kelli at Burning Man 2014
she was searching for the asshat w/ the laser and therefore was looking directly at it.

sun wont burn wood
sun with magnifying glass will burn down the wood house.

avoid the horizontal
avoid all reflections
and w/o side shields a beam can come from BEHIND
hit the inside of your glasses and prolly 90% will be reflected into that eye

EYES ARE THE WORST BEAMSTOP


good luck and be safe!! hak

btw IIRC the laser is the brightest light we know.
brighter than the sun for sure

not liking the location you put in your profile -no more help from me

 

[Benm]

I noticed that it DOES NOT block blue light from my blue-light digital clock. (I used to own an orange colored pair and those sure blocked the blue light).

When I directly looked at the sun, the goggles didn't seem to block much of the light (could not stare for more than 5 seconds). I understand that sometimes a laser can be BRIGHTER than the sun which gives me a bad impression about the goggles.

Blocking light from a clock says very little really. Output from leds or vacuum fluorescent displays often is fairly broadband and often contains light that may be passed by goggles that block it. For example, you will find that many goggles that stop 532nm and shorter will allow you to see green pixels on your monitor.

This is not a failure in these glasses, but just shows how broadband those 'green' pixels really are.

Laser protective goggles never make it safe to stare into the sun: regardless of what they are blocking there will be plenty of energy there on ohter wavelengths to make it uncomfortable and probably dangerous to look directly into the sun.

 

[FF11]

Thanks for the Advice. The goggles are OD4+. Will make sure no light hits me from behind like Hakzaw mentioned.

BTW: What makes you call me "rude" hakzaw?

 

[Garoq]

The goggles are relatively transparent to the longer blue wavelengths, and that is likely what you are seeing. Should be just fine at 405nm.

The dot from a 445nm looks greenish through the goggles, so you will probably see fluorescence from the surface of whatever you're pointing at.

 

[FF11]

The goggles are relatively transparent to the longer blue wavelengths, and that is likely what you are seeing. Should be just fine at 405nm.

The dot from a 445nm looks greenish through the goggles, so you will probably see fluorescence from the surface of whatever you're pointing at.

Thanks Garoq for your input! I feel much safer now.:yh:

 

[joeybab3]

Usually for half these "are these goggles good" questions the answer is no, but in your case yes. They are adequate.

Edit: dont stare into the sun. That doesnt help gauge very well.

 

[Benm]

Flourescense is a factor indeed, even if you don't notice it at all when looking at the dot without any goggles.

It depends on the material you shine the laser on, but some plastics and even plain paper can produce orange fluorescense when you use low-pass goggles. From my experience wall/ceiling paint hardly does, so you can see a much brighter return from a poster than from the wall it's hanging from. Obviously framed posters pose an extra reflection risk so be careful when checking those out without goggles!