T3D Re: Polarized Headlamps (TECH-3D digest 380)

["William J. Carter, Ph.D." <wc@xxxxxxxxxxxx>]

At 11:59 AM 10/8/98 -0600, Bob H. wrote:
>RE: When I was at Westinghouse Lamp Division as an engineer in 
>photolamps...we had a lot of those headlamps with Polarized filters 
>built in for testing in our Autolamp group.  
How were they built in Bob? Was it a filter after the lamp? Or some other
arrangement?

>.... They thought that a visor type filter could be sold to 
>cars without the windshield, but no way to insure all cars would be 
>fitted..and the filtered windshield also dimmed night viewing. 
I put a polarizing visor on my car, because here in California, we often get
low angle, bright sunlight at the "commute hour", and that can be VERY
disturbing! A polarized visor made one Heck of a difference to me! I
recommend everyone put a polarizer on their driver side visor.

>So it all fell to the wayside as too expensive and impractical to 
>make universal.  
Dang!


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