Leitz filter cube numbering

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Leitzcycler
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Joined: Mon Sep 09, 2019 11:55 am

Leitz filter cube numbering

#1 Post by Leitzcycler » Sat Dec 03, 2022 8:23 pm

I have found three data sheets describing Leitz filter cube specifications and have the following information

H3: BP 420-490 RKP 510 LP 520
K3: BP 470-490 RKP 510 LP 520
K2: extremely narrow band blue at 495 nm

It appears that K2 information is only available in the oldest(?) datasheet. And according to this information there is significant difference between the sub numbers within the same letter K.

Now the question: I have cubes marked plainly K and H. Cube H behaves as if it was the same or near the specifications of cube H3. Cube K behaves as if it was near K2.
Does anyone know what is the logic behind the sub numbering of the cubes? What are the actual specifications of cubes K and H (without sub numbers)?

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