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Biconcave lens, N-BK7, Ø 12.7 mm, f = -50 mm, mounted
€ 90,00
Biconcave singlet in N-BK7, Ø 12.7 mm, focal length -50 mm, in a mount. Uncoated. Negative focal length: diverges the beam, for beam expanders and to shorten system length.
On request
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