Achromatisches Dublett 25.4mm Durchmesser 149.6mm Brennweite

DLB-25.4-150PM

Achromatische Dubletts sind verkittete Achromate aus zwei verschiedenen Linsen (Low Dispersion Positiv aus Kronglas und High Dispersion Negativ aus Flintglas). Der Unterschied in Dispersion und Form beider Linsen wurde entwickelt, um die chromatischen Aberrationen in Blau (486,1 nm), Grün (546,1 nm) und Rot (656,3 nm) zu minimieren. Daher sind diese Linsen in der Lage, das gesamte sichtbare Wellenlängenspektrum zu unterstützen.
◦The spherical aberration of achromatic doublets is better than singlets and minimized at infinite conjugate ratios.
◦Achromatic Doublets are coated on both surfaces with a broadband multi-layer anti-reflection coating for the visible wavelength (400 − 700nm).
◦Set the positive part to the side of the incident parallel beam and put the negative part to the side of the focal point to minimize spherical aberration.
◦The difference in focal length of a lens at each wave length is Chromatic aberration and is due to “dispersion of the glass”, the change in refractive index of glass according to wavelength. This can be corrected by combining glasses with low and high dispersions. Spherical aberration is when a ray enters a lens farther from its optical axis and has a shorter focus than a paraxial focus.
Weitere Informationen
Name Achromatisches Dublett 25.4mm Durchmesser 149.6mm Brennweite
Gewicht 0.0100kgs
Standardbeschichtungen verfügbar Nein
Leitfaden
  • Please contact our Sales Division for customized achromatic doublets. (Customized on size etc.)
  • Please refer to “Lens design data” on “Technical Data” for the lens design data.
  • Air spaced focusing lenses are also available (NYTL/NYDL) designed for laser processing applications.
  • WEB-Referenzkatalogcode/W3079
Achtung
  • Set the positive part to the side of the incident parallel beam and put the negative part to the side of the focal point to minimize spherical aberration.
  • The difference in focal length of a lens at each wave length is Chromatic aberration and is due to “dispersion of the glass”, the change in refractive index of glass according to wavelength. This can be corrected by combining glasses with low and high dispersions.
  • Spherical aberration is when a ray enters a lens farther from its optical axis and has a shorter focus than a paraxial focus.
  • Tragen Sie unbedingt eine Laserschutzbrille, wenn Sie den Strahlengang überprüfen und die optische Achse einstellen.
Image Label Achromatic Doublet 25.4mm Diameter 149.6mm Focal Length
Durchmesser φD 25.4mm
Brennweite 149.6mm
Material BK7, SF2
Design-Wellenlänge Blue: 486.1nm, Green: 546.1nm, Red: 656.3nm
Beschichtung Broadband Mehrlagige AR-Beschichtung for the Visible
Cement Ultraviolet Hardened Adhesive
Laserzerstörschwelle 0.3J/cm2 
(Laserpulsbreite 10ns, Wiederholfrequenz 20Hz)
Oberflächenqualität (Scratch-Dig) 40-20
Durchmesser φD φ25.4mm
Brennweite 149.6mm
Kantendicke te 5.4mm
Mittendicke tc 6.7mm
Rückseitiger Fokus fb 146.2mm
Zentrierung <1′
Auf Lager
SKU
DLB-25.4-150PM
93,20 €

Delivery in : 1 week

Achromatische Dubletts sind verkittete Achromate aus zwei verschiedenen Linsen (Low Dispersion Positiv aus Kronglas und High Dispersion Negativ aus Flintglas). Der Unterschied in Dispersion und Form beider Linsen wurde entwickelt, um die chromatischen Aberrationen in Blau (486,1 nm), Grün (546,1 nm) und Rot (656,3 nm) zu minimieren. Daher sind diese Linsen in der Lage, das gesamte sichtbare Wellenlängenspektrum zu unterstützen.

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