WARNING - technical thread - how are the red dots really made?

Started Sep 7, 2012 | Discussions thread
Bodoh
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Re: WARNING - technical thread - how are the red dots really made?
In reply to Roland Karlsson, Sep 10, 2012

So. Does the diffraction theory require the reflection off the IR filter? Does it require the close spacing as is the case in a compact? Because here we have probably no separate IR filter and no close spacing to the rear element (mirror box). How?
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