Plano Concave Lens 40mm Diameter −60mm Focal Length 400 - 700nm

SLB-40-60NM

These simple negative lenses have many uses. Alone they form a virtual image of a distant object or collimated light source. Used in combination with other optics they reduce the power of the system. Sharp edges which are common in negative lenses are removed by beveling in order to reduce the likelihood of chipping.
◦There are three types of plano concave 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.
Weitere Informationen
Name Plano Concave Lens 40mm Diameter −60mm Focal Length 400 - 700nm
Gewicht 0.0500kgs
Standardbeschichtungen verfügbar Nein
Leitfaden
  • 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.
Anmerkung -
Achtung
  • Plano concave lenses are negative lenses that diverge collimated incident light and are primarily used in conjunction with plano convex lenses to shape beams.
  • The 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.
  • The plano concave lenses are designed for parallel light to be incident to the concave surface.
  • 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.
  • Sharpe edges are common in negative lenses are removed by beveling in order to reduce chipping may result in smaller then edge thickness. Thicknesses listed in tables are to theoretical sharp edge.
Durchmesser φD 40mm
Brennweite 60mm
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 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ40mm
Focal length f −60mm
Edge thickness te 9.3mm
Center thickness tc 2mm
Back focal length fb −61.3mm
Radius of curvature r 31.14mm
Centration <1′
Auf Lager
SKU
SLB-40-60NM
72,20 €

Delivery in : 6-12 weeks

These simple negative lenses have many uses. Alone they form a virtual image of a distant object or collimated light source. Used in combination with other optics they reduce the power of the system. Sharp edges which are common in negative lenses are removed by beveling in order to reduce the likelihood of chipping.

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