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Bobbywhy
#4
Nov13-12, 04:14 AM
PF Gold
P: 1,909
What kind of optics are these?

Drakkith is correct: they look like dichroic filters. It's likely they are used in Nd-YAG lasers. Here is another for sale:

Continuum Part No: 105-0022, Rev. F
http://www.bmius.com/p-31144-continu...1-damaged.aspx

Cheers,
Bobbywhy