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Home » Products » Lens » BK7 Plano-Concave Lenses
BK7 Plano-Concave Lenses

BK7 Plano-Concave Lenses

Our BK7 plano-concave lens has one plane, one inward curved surface, and a negative focal length which has an important role to play in image shrinking and light dispersion. We have as many as thousands of ready-made radius of curvature model. Moreover, the custom-designed models are also available.

Technical Specifications
Material: BK7
Diameter Tolerance: +0/-0.1mm
Thickness Tolerance: ±0.2mm
Flatness: λ/4 @632.8nm
Clear Aperture: 90%
Focal Length Tolerance: +/-1%
Surface Quality: 40-20
Bevel: <0.25mm x 45 º
Design Wavelength: 587.6nm
Centration: 3 arc min

Note: The price per run of common single wavelength anti-reflection coating is shown below. However, the actual price will fluctuate frequently due to the influence of size, time, quantity, and exchange rate. If you want to know of the current price, you can contact us immediately. Moreover, please skim through the page of coating film on our website for more information.

Catalog No. Diameter
(mm)
Effective FL(mm) Back FL(mm) Radius R1(mm) Center Thickness
(mm)
Edge Thickness
(mm)
Price-Uncoated AR@1064nm double Sides
5--10 50-100 10.0 50.0 100.0
BJP-L3B-06-012 6 -12 -12.99 -6.20 1.50 2.27 $16.1 $9.7 $48.4 $17.7 $14.5
BJP-L3B-06-018 6 -18 -19.32 -9.30 2.00 2.50 $16.1 $9.7 $48.4 $17.7 $14.5
BJP-L3B-06-024 6 -24 -25.19 -12.40 1.80 2.17 $16.1 $9.7 $48.4 $17.7 $14.5
BJP-L3B-06-030 6 -30 -31.32 -15.50 2.00 2.29 $16.1 $9.7 $48.4 $17.7 $14.5
BJP-L3B-06-040 6 -40 -41.25 -20.67 1.90 2.12 $16.1 $9.7 $48.4 $17.7 $14.5
BJP-L3B-10-016 10 -16 -17.05 -8.27 1.60 3.28 $16.1 $9.7 $48.4 $17.7 $14.5
BJP-L3B-10-020 10 -20 -20.99 -10.34 1.50 2.79 $16.1 $9.7 $48.4 $17.7 $14.5
BJP-L3B-10-030 10 -30 -31.05 -15.50 1.60 2.43 $16.1 $9.7 $48.4 $17.7 $14.5
BJP-L3B-10-035 10 -35 -36.19 -18.09 1.80 2.50 $16.1 $9.7 $48.4 $17.7 $14.5
BJP-L3B-10-040 10 -40 -41.32 -20.67 2.00 2.61 $16.1 $9.7 $48.4 $17.7 $14.5
BJP-L3B-15-020 15 -20 -20.99 -10.34 1.50 4.72 $17.7 $10.5 $50.0 $18.5 $15.3
BJP-L3B-15-035 15 -35 -36.19 -18.09 1.80 3.43 $17.7 $10.5 $50.0 $18.5 $15.3
BJP-L3B-15-040 15 -40 -40.99 -20.67 1.50 2.91 $17.7 $10.5 $50.0 $18.5 $15.3
BJP-L3B-15-050 15 -50 -51.32 -25.84 2.00 3.11 $17.7 $10.5 $50.0 $18.5 $15.3
BJP-L3B-15-060 15 -60 -61.32 -31.01 2.00 2.92 $17.7 $10.5 $50.0 $18.5 $15.3
BJP-L3B-15-15480 15 -15480 -15482.64 -8000.06 4.00 4.00 $17.7 $10.5 $50.0 $18.5 $15.3
BJP-L3B-20-030 20 -30 -31.05 -15.50 1.60 5.26 $19.4 $11.3 $51.6 $19.4 $16.1
BJP-L3B-20-040 20 -40 -40.99 -20.67 1.50 4.08 $19.4 $11.3 $51.6 $19.4 $16.1
BJP-L3B-20-050 20 -50 -51.05 -25.84 1.60 3.61 $19.4 $11.3 $51.6 $19.4 $16.1
BJP-L3B-20-080 20 -80 -81.32 -41.34 2.00 3.23 $19.4 $11.3 $51.6 $19.4 $16.1
BJP-L3B-20-100 20 -100 -101.45 -51.68 2.20 3.18 $19.4 $11.3 $51.6 $19.4 $16.1
BJP-L3B-20-3870 20 -3870 -3872.64 -2000.02 4.00 4.02 $19.4 $11.3 $51.6 $19.4 $16.1
BJP-L3B-20-7740 20 -7740 -7742.64 -4000.03 4.00 4.01 $19.4 $11.3 $51.6 $19.4 $16.1
BJP-L3B-20-19350 20 -19350 -19353.30 -10000.08 5.00 5.00 $19.4 $11.3 $51.6 $19.4 $16.1
BJP-L3B-25-040 25 -40 -40.99 -20.67 1.50 5.71 $20.2 $12.1 $52.4 $20.2 $16.9
BJP-L3B-25-050 25 -50 -50.99 -25.84 1.50 4.72 $20.2 $12.1 $52.4 $20.2 $16.9
BJP-L3B-25-060 25 -60 -61.05 -31.01 1.60 4.23 $20.2 $12.1 $52.4 $20.2 $16.9
BJP-L3B-25-080 25 -80 -81.45 -41.34 2.20 4.13 $20.2 $12.1 $52.4 $20.2 $16.9
BJP-L3B-25-100 25 -100 -101.71 -51.68 2.60 4.13 $20.2 $12.1 $52.4 $20.2 $16.9
BJP-L3B-40-060 40 -60 -60.99 -31.01 1.50 8.81 $24.2 $14.5 $56.5 $22.6 $19.4
BJP-L3B-40-080 40 -80 -81.05 -41.34 1.60 6.76 $24.2 $14.5 $56.5 $22.6 $19.4
BJP-L3B-40-100 40 -100 -101.19 -51.68 1.80 5.83 $24.2 $14.5 $56.5 $22.6 $19.4
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  • Fused Silica Plano-Concave LensThis plano-concave lens is exquisitely made with UV-grade synthetic fused silica. It features outstanding thermal properties, exceptional purity, as well as excellent environmental durability for rigorous applications. Thousands of ready-made radiuses of curvature model will be offered. In the meantime...
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