DragonLasers OD4 glasses Challenges

[Zenador]

Hey guys,

I bought some OD4 glasses from DragonLasers, 190-533nm for my PHR builds, and 600-740nm for my LPC815 and other red burner builds. I have not tested the PHR yet, but the red protection seems to work too well. With 2 different reds, I can't see squat. I aimed it at several things, and nothing is visible, not even a faint dot. With the laser moving across the lens (no I didn't hold it still, I know that can damage the glasses) the diode looks like it's off.

So while the protection is fantastic, as I quite value my eye sight, this poses a challenge while working on my builds. I'm thinking I may have to use a webcam on my netbook to see what's happening.

Anyone have any advice or similar experience?

 

[Bluefan]

The OD is specified to be larger than 4, looking at the graph at dragon lasers he can't measure above OD ~4.5, so it may very well be much higher than that. For IR I have an IR detector card, but I'm not aware of such a thing for red lasers.

 

[Belphegor]

Hi Zenador,

What are the powers of your lasers?

I had asked in my topic exactly this question ( whith OD4+ i will be able to see the dot from a 300mW Red (O-Like) )

Do u know any other goggles whith OD 2,5 ( recomended from OD Calculator 300mW to 1mW ) ?

 

[Bluefan]

The dot of a 300mw red will be visible with OD 5, but with higher OD's it gets dark.

 

[Zenador]

I don't have numbers (mw) on the lasers... Both are LM317 driven, one is a 2x or 4x DVD burner LD @ 50ma in a reclaimed collimator from a laser level. The other is a 16x Sony DVD burner LD @ 100ma in an aixiz from HTD. I have not pushed the 16x any further, I can't find a reliable consensus on best mA to run it at, and I don't want to LED it.

A LPM is next on my wish list...

I don't have any experience with other glasses, so I can't compare....