LazyBeam
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- Jun 12, 2010
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So I was curious as to what these goggles actually were, protection-wise. Below are averages of scans made on the WL Arctic Lasershields using a spectrophotometer. The machine has recently been calibrated and was zeroed using spectralon reflectance standards and internal attenuators directly before taking measurement. Unfortunately, the machine's precision starts to dwindle around OD 5 detections but the good news (actually bad news) is that the WL glasses aren't that good! ... oh wait...
No intensity resistance testing was done because I don't have an LPM... but anyone with an LPM can test how many seconds the goggles can withstand a direct collimated beam without degradation. Also, I skipped reflectance versus absorbance testing because there wasn't an easy way to mount the glasses without mutilation in that test setup... but mostly I don't really care where the beam goes as long as lasers stay out of my eyes :shhh:.
The Full Spectrum measurement is a single scan using 5nm intervals.
In the Visible HiRes measurement, the range was cut down to 350-1050nm with a 1nm interval.
The HiRes graph is an average of several separate scans.
The bad news is that WL Lasers Lied. They are not near the rated as I tested them.
The good news is that they are still decent (almost OD 2 for 445nm and OD 2.5 for 405nm)
This means that an 800mW Arctic beam would be cut down to ~8mW. Better than nothing. :undecided:
However, they are nearly worthless for green.
No intensity resistance testing was done because I don't have an LPM... but anyone with an LPM can test how many seconds the goggles can withstand a direct collimated beam without degradation. Also, I skipped reflectance versus absorbance testing because there wasn't an easy way to mount the glasses without mutilation in that test setup... but mostly I don't really care where the beam goes as long as lasers stay out of my eyes :shhh:.
The Full Spectrum measurement is a single scan using 5nm intervals.
In the Visible HiRes measurement, the range was cut down to 350-1050nm with a 1nm interval.
The HiRes graph is an average of several separate scans.
The bad news is that WL Lasers Lied. They are not near the rated as I tested them.
The good news is that they are still decent (almost OD 2 for 445nm and OD 2.5 for 405nm)
This means that an 800mW Arctic beam would be cut down to ~8mW. Better than nothing. :undecided:
However, they are nearly worthless for green.