Cylindrical Plano-convex Lens (BK7) 20×40mm 250mm Focal Length 400 - 700nm

CLB-2040-250PM

Skip to the beginning of the images gallery

Cylindrical plano convex lens has a convex curvature in the vertical direction and has no curvature in the horizontal direction. They are often used to condense a laser beam into a thin line.

Details

◦Plano Convex 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.

More Information

More Information
Name	Cylindrical Plano-convex Lens (BK7) 20×40mm 250mm Focal Length 400 - 700nm
Weight	0.0090kgs
Standard Coatings Available	No
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). WEB Reference Catalog Code/W4022
Remark	-
Attention	Plano-convex cylindrical lens have chromatic aberration, and 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-convex cylindrical lens parallel light should incident to the convex 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.
A x B	20mm x 40mm
Focal length	250mm
Material	BK7
Design Wavelength	546.1nm
Refractive index n<sub>e</sub>	1.519
Coating	Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance	> Average 99%
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	400 - 700nm
A×B	20×40mm
Focal length f	250mm
Edge thickness te	3.6mm
Center thickness tc	4mm
Back focal length fb	247.4mm
Radius of curvature r	129.75mm

In stock

SKU

CLB-2040-250PM

€161.20

Cylindrical plano convex lens has a convex curvature in the vertical direction and has no curvature in the horizontal direction. They are often used to condense a laser beam into a thin line.

Cylindrical Plano-convex Lens (BK7) 20×40mm 250mm Focal Length 400 - 700nm

Resources & Downloads