DCV (Double-Concave) lenses have the same radii on both sides of the lens, and the function is similar to plano-convex lenses by causing collimated incident light to diverge. Bi-Concave lenses are often used to expand light or increase focal length, such as beam expanders and projection systems. These lenses are available uncoated or with a variety of antireflection coatings optimized in the VIS (400~700nm)；NIR (650~1050nm) and SWIR(1000~1650nm).
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Material: H-K9L (CDGM) |
Design Wavelength: 587.6nm |
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Dimension Tolerance: +0.0/-0.1mm |
CT tolerance: ±0.2mm |
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EFL Tolerance: ±2% |
Irregularity: λ/4@632.8nm |
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Centration: 3' |
Surface Quality: 60/40 |
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Bevel : 0.2mmX45° |
Coating : See details in the list |
