This double concave lens is exquisitely made with UV-grade synthetic fused silica. It is characterized by high thermal properties, exceptional purity, and excellent environmental durability for demanding applications. There are thousands of ready-made radiuses of curvature model in our company. Like other products, our company is able to manufacture new models as per customers' requirements.
Technical Specifications
Material: UV Grade Fused Silica
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 following table shows the price per run of common single wavelength anti-reflection coating. Yet, many uncertain factors like size, time, quantity, and exchange rate might account for actual price fluctuations. If you are interested in our product, please don't hesitate to call us. 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=-R2 (mm) | Center Thickness (mm) | Edge Thickness (mm) | Price-Uncoated | AR@1064nm double Sides | |||
| 5--10 | 50-100 | 10.0 | 50.0 | 100.0 | |||||||
| BJP-L1J-06-012 | 6 | -12 | -12.64 | -11.30 | 1.92 | 2.73 | $22.6 | $14.5 | $54.8 | $22.6 | $19.4 |
| BJP-L1J-06-030 | 6 | -30 | -30.64 | -27.80 | 1.90 | 2.22 | $22.6 | $14.5 | $54.8 | $22.6 | $19.4 |
| BJP-L1J-10-020 | 10 | -20 | -20.62 | -18.62 | 1.83 | 3.20 | $22.6 | $14.5 | $54.8 | $22.6 | $19.4 |
| BJP-L1J-10-030 | 10 | -30 | -30.64 | -27.80 | 1.90 | 2.81 | $22.6 | $14.5 | $54.8 | $22.6 | $19.4 |
| BJP-L1J-127-025 | 12.7 | -25 | -25.55 | -23.17 | 1.61 | 3.38 | $22.6 | $14.5 | $54.8 | $22.6 | $19.4 |
| BJP-L1J-127-035 | 12.7 | -35 | -35.64 | -32.38 | 1.87 | 3.13 | $22.6 | $14.5 | $54.8 | $22.6 | $19.4 |
| BJP-L1J-20-040 | 20 | -40 | -40.68 | -36.98 | 2.00 | 4.76 | $25.8 | $17.7 | $58.1 | $25.8 | $22.6 |
| BJP-L1J-20-050 | 20 | -50 | -50.58 | -46.11 | 1.71 | 3.90 | $25.8 | $17.7 | $58.1 | $25.8 | $22.6 |
| BJP-L1J-254-045 | 25.4 | -45 | -45.71 | -41.58 | 2.08 | 6.05 | $35.5 | $27.4 | $67.7 | $35.5 | $32.3 |
| BJP-L1J-254-060 | 25.4 | -60 | -60.68 | -55.32 | 2.00 | 4.96 | $29.0 | $21.0 | $61.3 | $29.0 | $25.8 |
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