Unknown terms related to DIC

[apochronaut]

I have come across two terms related to a DIC microscope that I am unfamiliar with. Does anyone know anything about these?
Knoop prism. Possibly related to Frederick Knoop?
Warrior prism.

[MicroBob]

Hi Phil,
I have never heard these terms so can't help. I would say it is unlikely that they have to do with the finity Zeiss West systems.

Bob

[apochronaut]

No. It is a 10, 20,40,100X plan semi-apo , 25mm f.o.v. system out of a Chinese factory. Those are the terms they are using for the 5 prisms associated with the system. Three Warrior prisms below : 10, 20/40 and 100 and 2 Knoop prism inserts above, 10/20 and 40/100. It may have something to do with the prism angles involved, not the prism material.

[Hobbyst46]

No. It is a 10, 20,40,100X plan semi-apo , 25mm f.o.v. system out of a Chinese factory. Those are the terms they are using for the 5 prisms associated with the system. Three Warrior prisms below : 10, 20/40 and 100 and 2 Knoop prism inserts above, 10/20 and 40/100. It may have something to do with the prism angles involved, not the prism material.

The specific angles of the diamond-based indentation device for micro hardness tests ? the latter is described as a pyramid , but nothing about optics.

[PeteM]

The little I can add to the mystery is that Knoop hardness testing uses a microscope to measure the depth of an indentation - that indentation made by a prescribed weight and corresponding to metal hardness. Most, however, don't use DIC for the microscope; but rather just look a how deep (calibrated focus knob) one must go to get a sharp image from surface to bottom of the indentation.

I've also bought some fine plan infinity objectives originally meant for hardness testers, but have never seen a DIC prism destined for hardness testing. Could be it would be useful though due to the "optical sectioning" nature of DIC.

[BramHuntingNematodes]

Warrior prism? The only thing I can think of is zhanshi being roughly homophonic with Jiangxi.

[MicroBob]

Perhaps "warrior" is the result of an automatic translation of "wollaston".
Epi DIC might speed up the evaluation of indentations in good/bad quality assurance.

[Hobbyst46]

Perhaps "warrior" is the result of an automatic translation of "wollaston".

Brilliant idea !

[apochronaut]

That is likely. The only thing about that is that the translation into English , otherwise, is pretty perfect.
I did find reference to a research paper on prisms from India and one of the lead authors was named Warrier.

[Scarodactyl]

Makes you wonder if it's a minor variation, or something that's more dic-lite (like langastino lobsters). If I were a billionaire I'd shell out to find out because I am really curious.

[PeteM]

Is there a link to view, with photos of these mysterious Knoop Warrior prisms? Could be searching the Chinese characters might come up with something -- or a Chinese-reading member can translate?

[apochronaut]

So I got some clarification, although given that the rest of the information is quite accurate, it doesn't make much sense.

Somehow, Nomarski was translated as Knoop and as suggested, Wollaston was translated as Warrior. It is kind of like the names were accidently incorrectly chosen from The Boy's Illustrated Guide to Prisms. Maybe they have that in China.