BI-PCC-20-40-U, 20mm Plano Concave lens, Uncoated, FL=-40mm
Same family
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BI-PCC-20-30-U, 20mm Plano Concave lens, Uncoated, FL=-30mm
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BI-PCC-20-30-V, 20mm Plano Concave lens, VIS Coated, FL=-30mm
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BI-PCC-20-40-N1, 20mm Plano Concave lens, N1 Coated, FL=-40mm
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BI-PCC-20-40-N2, 20mm Plano Concave lens, N2 Coated, FL=-40mm
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BI-PCC-20-40-V, 20mm Plano Concave lens, VIS Coated, FL=-40mm
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BI-PCC-20-50-N1, 20mm Plano Concave lens, N1 Coated, FL=-50mm
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BI-PCC-20-50-N2, 20mm Plano Concave lens, N2 Coated, FL=-50mm
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BI-PCC-20-50-U, 20mm Plano Concave lens, Uncoated, FL=-50mm
BI-PCC-20-40-U: 20mm Plano Concave lens, Uncoated, FL=-40mm.
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: 20 mm
Type: Plano Concave
Material: N-BK7
Center Thickness: 3.50 ± 0.10 mm
Edge Thickness: 5.92 mm
Focal Length (EFL): -40 mm
Back Focal Length (BFL): -42.31 mm
Surface Quality: 40-20 (scratch-dig)
Flatness / Irregularity: λ/4 P-V @ 632.8 nm
Coating: Uncoated (transmission 350–2200 nm)
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Same family
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BI-PCC-20-30-U, 20mm Plano Concave lens, Uncoated, FL=-30mm
-
BI-PCC-20-30-V, 20mm Plano Concave lens, VIS Coated, FL=-30mm
-
BI-PCC-20-40-N1, 20mm Plano Concave lens, N1 Coated, FL=-40mm
-
BI-PCC-20-40-N2, 20mm Plano Concave lens, N2 Coated, FL=-40mm
-
BI-PCC-20-40-V, 20mm Plano Concave lens, VIS Coated, FL=-40mm
-
BI-PCC-20-50-N1, 20mm Plano Concave lens, N1 Coated, FL=-50mm
-
BI-PCC-20-50-N2, 20mm Plano Concave lens, N2 Coated, FL=-50mm
-
BI-PCC-20-50-U, 20mm Plano Concave lens, Uncoated, FL=-50mm
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