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CLB-N
A×B
Focal length f
Edge thickness te
Center thickness tc
Back focal length fb
Radius of curvature r
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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.

◦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.

Related product
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Technical Data
Documents/Downloads
Guide

▶Lenses are available in a large selection and in custom sizes and focal lengths.
▶In addition to our standard coating we offer custom anti-reflective coating at specific wavelengths.
▶We offer holders to mount our catalog cylindrical lenses, consult our Sales Division for assistance in your selection (CHA).
W4022
▶Please refer to here for Wavelength Characteristic Data (Reference Data, EXCEL file format).

Attention

▶The cylindrical plano-concave lens has chromatic aberration, the focal length will vary depending on the wavelength. Please check the “wavelength characteristic of the focal length data” on “Technical Data” for the focal lengths of each wavelength.
▶When using a plano-concave cylindrical lens parallel light should incident to the concave side first. There is a possibility that the spherical aberration will increase and optical performance of the system will be degraded if use in reverse.
▶Transmissions losses due to reflection off the front and rear surfaces of the lens can be minimized by coating the surfaces. Consult our Sales Division for anti-reflection coatings suitable for your application.

Common Specifications
MaterialBK7
TypeCylindrical Plano Concave Lenses (BK7 10×10 - 30×50)
Design Wavelength546.1nm
Refractive index ne1.519
CoatingBroadband Multilayer antireflection coating (400 - 700nm)
Transmmittance> Average 99%
Laser Damage Threshold4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear apertureCircle or ellipse inscribed in a rectangular of 90% of the dimension
Surface Quality (Scratch-Dig)20-10
Outline Drawing

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Schematic

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Typical Transmittance Data

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T: Transmission
Reference Data
Spec
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Part Number
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CLB-1010-15NM
CLB-1010-20NM
CLB-1010-25NM
CLB-1010-30NM
CLB-1010-40NM
CLB-1020-15NM
CLB-1020-20NM
CLB-1020-25NM
CLB-1020-30NM
CLB-1020-40NM
CLB-1515-20NM
CLB-1515-25NM
CLB-1515-30NM
CLB-1515-40NM
CLB-1525-20NM
CLB-1525-25NM
CLB-1525-30NM
CLB-1525-40NM
CLB-2020-25NM
CLB-2020-30NM
CLB-2020-40NM
CLB-2020-50NM
CLB-2020-60NM
CLB-2020-70NM
CLB-2020-80NM
CLB-2020-100NM
CLB-2020-130NM
CLB-2020-150NM
CLB-2020-200NM
CLB-2020-250NM
CLB-2020-300NM
CLB-2030-100NM
CLB-2030-130NM
CLB-2030-150NM
CLB-2030-200NM
CLB-2030-250NM
CLB-2030-300NM
CLB-2040-25NM
CLB-2040-30NM
CLB-2040-40NM
CLB-2040-50NM
CLB-2040-60NM
CLB-2040-70NM
CLB-2040-80NM
CLB-2050-100NM
CLB-2050-130NM
CLB-2050-150NM
CLB-2050-200NM
CLB-2050-250NM
CLB-2050-300NM
CLB-3030-50NM
CLB-3030-60NM
CLB-3030-70NM
CLB-3030-80NM
CLB-3030-100NM
CLB-3030-130NM
CLB-3030-150NM
CLB-3030-200NM
CLB-3030-250NM
CLB-3030-300NM
CLB-3040-50NM
CLB-3040-60NM
CLB-3040-70NM
CLB-3040-80NM
CLB-3050-100NM
CLB-3050-130NM
CLB-3050-150NM
CLB-3050-200NM
CLB-3050-250NM
CLB-3050-300NM

400 - 700nm

10×10mm

−15mm

4mm

2.2mm

−16.4mm

7.79mm

400 - 700nm

10×10mm

−20mm

3mm

1.7mm

−21.1mm

10.38mm

400 - 700nm

10×10mm

−25mm

3mm

2mm

−26.3mm

12.98mm

400 - 700nm

10×10mm

−30mm

3mm

2.2mm

−31.4mm

15.57mm

400 - 700nm

10×10mm

−40mm

3mm

2.4mm

−41.6mm

20.76mm

400 - 700nm

10×20mm

−15mm

4mm

2.2mm

−16.4mm

7.79mm

400 - 700nm

10×20mm

−20mm

3mm

1.7mm

−21.1mm

10.38mm

400 - 700nm

10×20mm

−25mm

3mm

2mm

−26.3mm

12.98mm

400 - 700nm

10×20mm

−30mm

3mm

2.2mm

−31.4mm

15.57mm

400 - 700nm

10×20mm

−40mm

3mm

2.4mm

−41.6mm

20.76mm

400 - 700nm

15×15mm

−20mm

5mm

1.8mm

−21.2mm

10.38mm

400 - 700nm

15×15mm

−25mm

5mm

2.6mm

−26.7mm

12.98mm

400 - 700nm

15×15mm

−30mm

4mm

2.1mm

−31.4mm

15.57mm

400 - 700nm

15×15mm

−40mm

4mm

2.6mm

−41.7mm

20.76mm

400 - 700nm

15×25mm

−20mm

5mm

1.8mm

−21.2mm

10.38mm

400 - 700nm

15×25mm

−25mm

5mm

2.6mm

−26.7mm

12.98mm

400 - 700nm

15×25mm

−30mm

4mm

2.1mm

−31.4mm

15.57mm

400 - 700nm

15×25mm

−40mm

4mm

2.6mm

−41.7mm

20.76mm

400 - 700nm

20×20mm

−25mm

7mm

2.3mm

−26.5mm

12.98mm

400 - 700nm

20×20mm

−30mm

6mm

2.4mm

−31.6mm

15.57mm

400 - 700nm

20×20mm

−40mm

5mm

2.4mm

−41.6mm

20.76mm

400 - 700nm

20×20mm

−50mm

4mm

2mm

−51.3mm

25.95mm

400 - 700nm

20×20mm

−60mm

4mm

2.4mm

−61.5mm

31.14mm

400 - 700nm

20×20mm

−70mm

4mm

2.6mm

−71.7mm

36.33mm

400 - 700nm

20×20mm

−80mm

4mm

2.8mm

−81.8mm

41.52mm

400 - 700nm

20×20mm

−100mm

4mm

3mm

−102.0mm

51.9mm

400 - 700nm

20×20mm

−130mm

4mm

3.3mm

−132.1mm

67.47mm

400 - 700nm

20×20mm

−150mm

4mm

3.4mm

−152.2mm

77.85mm

400 - 700nm

20×20mm

−200mm

4mm

3.5mm

−202.3mm

103.8mm

400 - 700nm

20×20mm

−250mm

4mm

3.6mm

−252.4mm

129.75mm

400 - 700nm

20×20mm

−300mm

4mm

3.7mm

−302.4mm

155.7mm

400 - 700nm

20×30mm

−100mm

4mm

3mm

−102.0mm

51.9mm

400 - 700nm

20×30mm

−130mm

4mm

3.3mm

−132.1mm

67.47mm

400 - 700nm

20×30mm

−150mm

4mm

3.4mm

−152.2mm

77.85mm

400 - 700nm

20×30mm

−200mm

4mm

3.5mm

−202.3mm

103.8mm

400 - 700nm

20×30mm

−250mm

4mm

3.6mm

−252.4mm

129.75mm

400 - 700nm

20×30mm

−300mm

4mm

3.7mm

−302.4mm

155.7mm

400 - 700nm

20×40mm

−25mm

7mm

2.3mm

−26.5mm

12.98mm

400 - 700nm

20×40mm

−30mm

6mm

2.4mm

−31.6mm

15.57mm

400 - 700nm

20×40mm

−40mm

5mm

2.4mm

−41.6mm

20.76mm

400 - 700nm

20×40mm

−50mm

4mm

2mm

−51.3mm

25.95mm

400 - 700nm

20×40mm

−60mm

4mm

2.4mm

−61.5mm

31.14mm

400 - 700nm

20×40mm

−70mm

4mm

2.6mm

−71.7mm

36.33mm

400 - 700nm

20×40mm

−80mm

4mm

2.8mm

−81.8mm

41.52mm

400 - 700nm

20×50mm

−100mm

4mm

3mm

−102.0mm

51.9mm

400 - 700nm

20×50mm

−130mm

4mm

3.3mm

−132.1mm

67.47mm

400 - 700nm

20×50mm

−150mm

4mm

3.4mm

−152.2mm

77.85mm

400 - 700nm

20×50mm

−200mm

4mm

3.5mm

−202.3mm

103.8mm

400 - 700nm

20×50mm

−250mm

4mm

3.6mm

−252.4mm

129.75mm

400 - 700nm

20×50mm

−300mm

4mm

3.7mm

−302.4mm

155.7mm

400 - 700nm

30×30mm

−50mm

7mm

2.2mm

−51.5mm

25.95mm

400 - 700nm

30×30mm

−60mm

6mm

2.1mm

−61.4mm

31.14mm

400 - 700nm

30×30mm

−70mm

5mm

1.8mm

−71.2mm

36.33mm

400 - 700nm

30×30mm

−80mm

5mm

2.2mm

−81.4mm

41.52mm

400 - 700nm

30×30mm

−100mm

5mm

2.8mm

−101.8mm

51.9mm

400 - 700nm

30×30mm

−130mm

5mm

3.3mm

−132.2mm

67.47mm

400 - 700nm

30×30mm

−150mm

5mm

3.5mm

−152.3mm

77.85mm

400 - 700nm

30×30mm

−200mm

5mm

3.9mm

−202.6mm

103.8mm

400 - 700nm

30×30mm

−250mm

5mm

4.1mm

−252.7mm

129.75mm

400 - 700nm

30×30mm

−300mm

5mm

4.3mm

−302.8mm

155.7mm

400 - 700nm

30×40mm

−50mm

7mm

2.2mm

−51.5mm

25.95mm

400 - 700nm

30×40mm

−60mm

6mm

2.1mm

−61.4mm

31.14mm

400 - 700nm

30×40mm

−70mm

5mm

1.8mm

−71.2mm

36.33mm

400 - 700nm

30×40mm

−80mm

5mm

2.2mm

−81.4mm

41.52mm

400 - 700nm

30×50mm

−100mm

5mm

2.8mm

−101.8mm

51.9mm

400 - 700nm

30×50mm

−130mm

5mm

3.3mm

−132.2mm

67.47mm

400 - 700nm

30×50mm

−150mm

5mm

3.5mm

−152.3mm

77.85mm

400 - 700nm

30×50mm

−200mm

5mm

3.9mm

−202.6mm

103.8mm

400 - 700nm

30×50mm

−250mm

5mm

4.1mm

−252.7mm

129.75mm

400 - 700nm

30×50mm

−300mm

5mm

4.3mm

−302.8mm

155.7mm

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