Posted 28 February 2004 - 03:33 PM
I seem to remember a while ago reading about some sort of coating or cover that is used by the military on binoculars. This cover protects some one looking through binoculars from being blinded by a laser. Apparently this has happened on boarders where there is a military presence with observers. The other side has used low power lasers to shot into the objective end of the binoculars used by the observing party causing permanent eye damage. Is this some sort of urban bino myth or is it true? If so what is the mechanism used to protect the observer and at the same time allow continued use of the binocular? I realize that this is a little off topic for an Astro-bino forum but I am very curious. As usual any input would be most appreciated.
Posted 28 February 2004 - 09:03 PM
Posted 28 February 2004 - 10:30 PM
That page mentions the "ISK-167 laser protection." I found the specs fror the ISK-167 filter here (PDF file):
The info on this site suggests this is no myth.
Apparently it's just an IR block filter that blocks infrared laser.
Posted 29 February 2004 - 12:57 PM
Thank you all for the information and links.
Posted 02 March 2004 - 11:41 PM
No, it is not an urban legend. The military do use it.