In photonics since 1999. Benelux technical support, answer within one working day.
Biconcave lens, N-BK7, Ø 12.7 mm, f = -20 mm
€ 32,00
Biconcave singlet in N-BK7, Ø 12.7 mm, focal length -20 mm. Uncoated. Negative focal length: diverges the beam, for beam expanders and to shorten system length.
On request
