Old 04-22-2014, 02:10 AM #1
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Default Any idea the optical density on these goggles?

I found some brown goggles which supposedly protect against laser light in the red and green wavelengths. The datasheet gives tables on page 20 about the photopic and scotopic luminous efficiency at different wavelengths, among other things. I tried to see a trend in the data to see if it would hold true for the protection the datasheet specifies:

"Brown color for day use. This provides protection against three types of laser; Ruby (694nm), Neodymium (1064 nm) and Double Neodymium (532nm). This lens may also be used as sunglass although exposure to direct sunlight should be kept to a minimum."

So I ask, any idea what the OD on these things might be on different wavelengths? Thanks


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Old 04-22-2014, 06:31 PM #2
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Talking Re: Any idea the optical density on these goggles?

Quote:
Originally Posted by petters View Post
I found some brown goggles which supposedly protect against laser light in the red and green wavelengths. The datasheet gives tables on page 20 about the photopic and scotopic luminous efficiency at different wavelengths, among other things. I tried to see a trend in the data to see if it would hold true for the protection the datasheet specifies:

"Brown color for day use. This provides protection against three types of laser; Ruby (694nm), Neodymium (1064 nm) and Double Neodymium (532nm). This lens may also be used as sunglass although exposure to direct sunlight should be kept to a minimum."

So I ask, any idea what the OD on these things might be on different wavelengths? Thanks

The specs say the OD must be 4.0 or greater for those wavelengths.
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Old 04-22-2014, 08:08 PM #3
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Default Re: Any idea the optical density on these goggles?

Oh, thanks..... maybe I should actually read it in full next time haha, went straight to looking for the data/graphs.
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Old 04-23-2014, 11:36 PM #4
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Talking Re: Any idea the optical density on these goggles?

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Originally Posted by petters View Post
Oh, thanks..... maybe I should actually read it in full next time haha, went straight to looking for the data/graphs.
I'm a fast reader, so I just skimmed it right out for you, no problem.

I'm also sort of used to gov specs for things, which helps.

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