Biconvex Lens 50.8mm Diameter 81.8mm Focal Length 750 - 1550nm

SLB-50.8B-80PIR2

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Symmetrical biconvex lenses are most useful when dealing with finite conjugate points. This makes them ideal for 1:1 imaging applications or for use in multi-element systems.

Details

◦There are two types of biconvex lenses available; BK7 for use in 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.
◦Our lenses are listed by outside diameter and focal length to assist your selection according to required specifications.

More Information

More Information
Name	Biconvex Lens 50.8mm Diameter 81.8mm Focal Length 750 - 1550nm
Weight	0.0500kgs
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. Achromatic lenses (DLB) which are chromatic aberration correction are also available. WEB Reference Catalog Code/W3075
Remark	-
Attention	The biconvex spherical lens has a 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. Biconvex spherical aberration is larger than that of the plano-convex lens, so focal spot may not gather at one point. 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.
Diameter φD	50.8mm
Focal length	81.8mm
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	85% of the diameter
Surface Quality (Scratch-Dig)	20-10
Wavelength range of Antireflection Coating	750 - 1550nm
Diameter φD	φ50.8mm
Focal length f	81.8mm
Edge thickness te	3mm
Center thickness tc	11mm
Back focal length fb	78.2mm
Radius of curvature r	83.04mm
Centration	＜1′

In stock

SKU

SLB-50.8B-80PIR2

€96.20

Symmetrical biconvex lenses are most useful when dealing with finite conjugate points. This makes them ideal for 1:1 imaging applications or for use in multi-element systems.

Biconvex Lens 50.8mm Diameter 81.8mm Focal Length 750 - 1550nm

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