Cylindrical Plano-concave Lens (BK7) 20×30mm −250mm Focal Length 750 - 1550nm
CLB-2030-250NIR2
Cylindrical plano concave lens has a concave curvature in the vertical direction and has no curvature in the horizontal direction. When used in combination with a plano-convex cylindrical lens an elliptical shaped beam can be sharped into a circular beam for use in semiconductor and other laser applications.
◦Plano Concave Cylindrical lenses are available in BK7 for from visible range to infrared wavelength range.
◦BK7 lenses are also available with three types of anti-reflection coatings, visible wavelength range, in the near-infrared range and in the infrared range.
◦Cylindrical lenses are often used in an optical system to change the shape and aspect ratio of the illumination light beam.
◦BK7 lenses are also available with three types of anti-reflection coatings, visible wavelength range, in the near-infrared range and in the infrared range.
◦Cylindrical lenses are often used in an optical system to change the shape and aspect ratio of the illumination light beam.
| Name | Cylindrical Plano-concave Lens (BK7) 20×30mm −250mm Focal Length 750 - 1550nm |
|---|---|
| Weight | 0.0070kgs |
| Standard Coatings Available | No |
| Guide |
|
| Remark | - |
| Attention |
|
| A x B | 20mm x 30mm |
| Focal length | 250mm |
| Material | BK7 |
| Design Wavelength | 546.1nm |
| Refractive index n<sub>e</sub> | 1.519 |
| Coating | Broadband Multilayer antireflection coating (750 - 1550nm) |
| Transmmittance | > Average 98.5% |
| Laser Damage Threshold | 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz) |
| Clear aperture | Circle or ellipse inscribed in a rectangular of 90% of the dimension |
| Surface Quality (Scratch-Dig) | 20-10 |
| Wavelength range of Antireflection Coating | 750 - 1550nm |
| A×B | 20×30mm |
| Focal length f | −250mm |
| Edge thickness te | 4mm |
| Center thickness tc | 3.6mm |
| Back focal length fb | −252.4mm |
| Radius of curvature r | 129.75mm |
In stock
SKU
CLB-2030-250NIR2
£193.91
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Cylindrical plano concave lens has a concave curvature in the vertical direction and has no curvature in the horizontal direction. When used in combination with a plano-convex cylindrical lens an elliptical shaped beam can be sharped into a circular beam for use in semiconductor and other laser applications.
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