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Article #3847Re: the laser speed measuring device
From: Frank Ball
Date: Sat, 25 Nov 1989 06:00
Date: Sat, 25 Nov 1989 06:00
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The article doesn't say what wavelength the laser is. I would think that if it was visable light or infared (most likely) that normal car headlights would jam it quite well. They can't use very much power, or it would be a hazard if it got aimed in a driver's eye. Halogen lamps put out about 90% of their light in the infared range, coventional lights even more. Maybe they weren't planning on using these lasers at night? Maybe car lamps aren't focused enough to jam at long distance, but they should when you get closer. Frank Ball frankb@hpsad.HP.COM
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!sun-barr!decwrl!ucbvax!hplabs!hpl-opus!hpnmdla!hpsad!frankb From: frankb@hpsad.HP.COM (Frank Ball) Newsgroups: sci.electronics Subject: Re: the laser speed measuring device Message-ID: <1840014@hpsad.HP.COM> Date: 25 Nov 89 06:00:02 GMT References: <89325.164006BHB3@PSUVM.BITNET> Organization: HP Signal Analysis Division - Rohnert Park, CA Lines: 11