BI-PCC-12-18-N2, 12mm Plano Concave lens, N2 Coated, FL=-18mm


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BI-PCC-12-18-N2: 12mm Plano Concave lens, N2 Coated, FL=-18mm.

Plano-concave lenses have one flat and one inward-curved surface and a negative focal length, so they spread a collimated beam. They are used to expand beams and, combined with a positive lens, to shorten an optical system.

Size: 12 mm

Type: Plano Concave

Material: N-SF11

Center Thickness: 3.50 ± 0.05 mm

Edge Thickness: 4.7 mm

Focal Length (EFL): -18 mm

Back Focal Length (BFL): -19.95 mm

Surface Quality: 40-20 (scratch-dig)

Flatness / Irregularity: λ/4 P-V @ 632.8 nm

Coating: N2 AR coating, 750–1550 nm, Ravg ≤ 0.7%

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BI-PCC-12-18-N2, 12mm Plano Concave lens, N2 Coated, FL=-18mm
BI-PCC-12-18-N2, 12mm Plano Concave lens, N2 Coated, FL=-18mm