Archived posting to the Leica Users Group, 2007/01/29

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Subject: [Leica] IR filters
From: Jim at hemenway.com (Jim Hemenway)
Date: Mon Jan 29 15:09:22 2007
References: <1be504db0701291310w15ac5e66l5f8214d2adfe546b@mail.gmail.com>
 
Phil:

I've been told that it "mirrors the hot infrared rays away from the sensor".

Jim. "A guy from MIT told me" Hemenway :-)


Phil Swango wrote:
> Jim Hemenway wrote:
> 
>> You want what is known as a hot mirror filter:
>> item number: 160079654883
> 
> 
> 
> Where did the term "hot mirror" originate.  I never heard of it before the
> M8 issues came up.  Is it just a clear filter that blocks IR?
>
Replies: Reply from reid at mejac.palo-alto.ca.us (Brian Reid) ([Leica] IR filters)
 In reply to: Message from pswango at att.net (Phil Swango) ([Leica] IR filters)