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Can anyone ID this lens? #8992202 01/22/24 09:59 PM
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DustyArmadillo Online Content OP
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Picked it up at a garage sale,

No idea what it is though.

[Linked Image]
[Linked Image]
[Linked Image]

Re: Can anyone ID this lens? [Re: DustyArmadillo] #8992212 01/22/24 10:06 PM
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Sniper John Online Happy
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Sure. Its n polarizer or isolator. They are optical diodes (isolators) that transmit in one direction and block reflected beams in the other. They are variable attenuators that transmit the maximum at one angle and when rotated 90 degrees, transmit the minimum. They act like 1/2 waveplates in most circumstances.

Re: Can anyone ID this lens? [Re: DustyArmadillo] #8992214 01/22/24 10:08 PM
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Sniper John Online Happy
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I really have no idea. But a google image search came up with a similar looking object with that description. Even had the indention around it. I doubt that is what that is.

Re: Can anyone ID this lens? [Re: DustyArmadillo] #8992220 01/22/24 10:12 PM
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DustyArmadillo Online Content OP
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Sounds legit

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