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FrozenGate by Avery

Deal Extreme red safety goggle review!!!

L

laserlover

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so they finally arrived and here they are, if you look at my signature you can follow a link to my review of the green ones! But anyways, when i first got these i expected them to not work at all like the green ones, but after taking a closer look at these red ones, they actually work!??? i think, here are the pics, please tell me if you think these are blocking enough light or if i should buy some wicked laser lasershades.


P8180101.jpg


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looking through the goggles with my dx 200mw red laser directly on a white paper
P8180104.jpg


same thing without the goggles
P8180105.jpg


through the goggles
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Looks pretty good to me! I think the 'green' goggles are falsely labeled. I think they are really for 1064nm/yag
 
I have the WL glasses and block a lot more light then what yours is showing. I find with the WL glasses, to focus the dot on my DX 200 red laser is very easy and can easliy see the smallest dot as possible which makes it easy to focus to the sweet spot for burning.

Yours seem to be blocking light, but the WL ones are much better
 
denodan said:
I have the WL glasses and block a lot more light then what yours is showing. I find with the WL glasses, to focus the dot on my DX 200 red laser is very easy and can easliy see the smallest dot as possible which makes it easy to focus to the sweet spot for burning.

Yours seem to be blocking light, but the WL ones are much better
Click to expand...

i believe it, i see your point mine make it super easy to focus to a small dot as well
 
Rangedunits said:
I brought the same glasses as you, i will try to get money back..
Click to expand...

these red ones work fine its just the green ones compeltely suck! i tried to get a refund for the green ones but i got no response from dx
 
It's hard to tell from the pictues, but how much are these things supposed to atennuate the light anyways? OD2, OD3?

Also, stop shining the laser through the goggles... you might poke a hole ;p
 
Rangedunits said:
No response from DX ... ;( Il throw those glasses in halloween costumes box.
Click to expand...
Make a good sized complaint on their forum, they'll respond if you do that.
 
styropyro said:
[quote author=Rangedunits link=1219121474/0#7 date=1219510746]No response from DX ... ;( Il throw those glasses in halloween costumes box.
Click to expand...
Make a good sized complaint on their forum, they'll respond if you do that.[/quote]
sure they will, but would they give a refund? i doubt it
 
I have both of these goggles and have read a lot of crap about the "green laser safety goggles".

For both there is an specification paper included in a special pocket of the bag.
It is in Chinese but some small escential parts are readabul in western letters/numbers!!!

In both specs you can read the letters "GJB1762-93" which is a Chinese standard for laser safety that these
comply to meaning they block bad UV/IR wavelengths that any way are invisibul to the eye.

On SD-2 specs that are for the "Red laser goggles" it also states:

"150nm~340nm, 610nm~700nm" and "He-Ne" in the text.
This I believe means that they are made for red lasers and also block invisibul UVB + UVC.

The SD-1 specs are for the "Green laser goggles" and states:

"150nm~540nm", "YAG", "10000" in the text and there is a curve showing slow cutoff at >540nm.
This goggle is mainly for YAG IR protection and some searches ("SD-1 + GJB1762-93") I found talk about CO2 lasers.

An actual test of both with my 635nm/200mW, 532nm/200mW and 405nm/200mW lasers + 3W UV torch
and a IR torch with my iPhone cam as detector gave following visually approx. attenuations (%):

____IR* 635nm 532nm 405nm UV-diode

SR2 0% >>98% 0% ~80% 70%

SR1 0% 0% ~97%** >>99%*** all

*The iPhone shows maybe 700-800nm so this result excludes YAG and CO2 wavelengths >800nm.
But this shows that as stated in the SR2-specs only 610-700nm are attenuated and also the
SR1 goggles lets these shorter IR waves pass through!
Observe that >850nm are not covered by the iPhone CCD chip (that includes >1064nm and >10000nm).

**a 532nm 200mW gets the same dot as a 5 mW - this is not so good but I'm sure these are better in
the YAG IR range where most radiation is on a cheap unfiltered "green".
5mW and without IR don't mean blind spots in the eye. 200mW is definite blindness!
This is good for a pair of goggles that are not intended for green lasers but primary are made for
YAG/CO2 IR cutting tool lasers!
These goggles came first of the two pairs after an intensive discussion on DealExtremes forum about
dangerous IR from unfiltered green YAG pointers - not the clearly visibul 532nm green light!

***Very very faint dot on flourescent plastic.

On the bottom line: I've spent $9030 on DealExtreme and know they have lots of good stuff and some bad.
(I'm waiting for my blue 445nm 1000mW for testing purposes.)
As everywhere else you get what you pay for - I always choose the more expensive items (Fluke or Swissmade etc)

Today almost everything is made in Asia depending on cheap labor. If you examine an item you buy in a box
stating "made in USA/EU" you most often find "made in China" in very small letters on some unobvious place!
This also applies to lasers and optics.
 
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You need to read around the forum a little. First, this thread is from 2008, and second, we dont ever recommend these goggles.

Also, I know you are using what you have available to do your testing, but there is no substitute for a LPM. Visual references just have too many variations to come to a solid conclusion.
 
Everything you say is right - but no one who criticises any product here or any other forum usually have no LPM either! But no one complains about their critics at all.

About the year 2008 I must tell that these are still sold today at DealExtreme so its an "up to date" item anyway.

I'm sure my measuring technique in the visibul and near visibul IR gives very relevant data for the specific wavelengths used (635nm, 532nm, 402nm and <700nm).

Its not how good instruments you have that it always depends on - its more the performance and idea of what you are doing. I've seen lots of people getting totally crap out of expensive instruments depending on misuse!

Most of all the question is what your measurements are meant to be used for.

The only thing I state in my review is that I my self have measured a qualitative attenuation of the green 532nm laser light by about 40x with real beams compaired of the approximate relative strength in 2 different lasers of same construction.

I can include that the strength of the red 200mW dot when attenuated had less intensity than a 1mW dito red diod laser.

This information is enough to give me a pretty clear picture of what these (my own actual pair) goggles can gain in the visibul and near IR range for safety purposes.

I have not stated to have any actual information about these goggles in the lower IR or UVB/UVC bands other than that the specs that come with the purchase states they comply to the Chinese GJB1762-93 specs and I also tell that if you should be really safe using these you must make proper measurements in the low IR and high UV range where I say clearly I have no instruments to confirm if really GJB1762-93 does apply.
(GJB1762-93 is compairabul to European EN207: 1998+A1: 2002)

I'm no laser expert but have a master in electrical eng. and a bach. in radiation physics and measuring physics and some research practice so I've seen what people actually can and can not do with fine instruments!

I also state that the green laser goggles propably are not even meant for green laser light, but are happy to see that someone using them as this will save their sight if unintentionally get hit with a green laser not much over 100 mW.
And this I am absolutely sure of if the laser is IR filtered for my pair of goggles due to the measurments I made!

I'm just trying to be helpful on a place where people really say lots of stuff with no relevance or actual measurments made at all!!! And others believe them more than they believe someone who really puts some hard labour and skill into really measuring it. The type of measurement i made is called qualitative in science and is sufficient for this purpose as biological damage also is of a more qualitative than precise nature - it varies from person to person and other circumstances.

I nearly forgot the most important: I'm so glad there is a forum that really is concerned about laser safety - this is a problem totally unintended in many places like Sweden but will be more heard of as lasers get cheaper and cheaper.
Most people don't even know that even severe blind spots in the eye cannot be seen just like the natural occuring blind spot were the eye nerves exit.
They can't even tell what the letters L A S E R stand for and jump around with 500 mW lasers bought on internet. So this forum is great!
 
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If they product is still for sale, there is no problemr revamping an old thread about it - assuming its the exact same product (DX changes what product is certain SKU is sometimes).

As far as the results go: Attentuation of 98/97% would be problematic. The issue is that many people here work with red and green lasers in the order of serveral 100 mW, at which point 97% attenuation is just not enough.

To work safely you'd need at the very least OD2 (99%), preferably OD3 (99.9%). Higher densities may not be practical since you can't see what your doing anymore, so i'd say OD3 is optimal for class III.
 
Again, - you are completly right! They often change items - thats why I point out that what I say applies to my pair of goggles.

But again you must see that most laser pointers they sell are <100mW. But thats maybe also not true as most I've bought are >100mW - maybe others do the same as me? The red goggles are much better for its purpose than the green - the dot was really faint!

I surely will need something better when my so called 1000mW 473nm blue arrives from DealExtreme. Have any suggestions here for good and relatively cheap goggles?

Most of these small size pointers are unfiltered from IR which is really dangerous as it's invisibul and often is of high power I'm told.

But DealExtreme shows some concern in safety - they began to sell these goggles shortly after this topic began to be discussed on their forum in 2008!
And they give explicit warnings about misuse in their item descriptions of their more powerful laser pointers.
I know of many sellers who give a damn even here in Europe! So actually I believe DealExtreme are one of the better Chinese dealers.
 
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