140° Angle Apex, 25,4mm de Dia., traité UV-AR, Axicon

Diamètre (mm):

25.40 +0.00/-0.15

Longueur d’Onde à la Focale Donnée (nm):

632.8

Angle Apex (°):

140

Tolérance Angle Apex (°):

±0.5

Angle Axicon α (°):

Traitement:

UV-AR (250-425nm)

Spécification du Traitement:

R_abs ≤1.0% @ 250 - 425nm
R_avg ≤0.75% @ 250 - 425nm
R_avg ≤0.5% @ 370 - 420nm

Substrat:

Fused Silica

Ouverture Utile (%):

>90

Qualité de Surface:

40-20

Épaisseur au Bord ET (mm):

3.5

Tolérance Épaisseur au Bord (mm):

±0.1

Remarque:

Coating on Both Surfaces

Type:

Axicon, Plano-Convex

Gamme de Longeur d'Onde (nm):

250 - 425

Conformité réglementaire

RoHS 2015:

Conforme

REACH 201:

Conforme

Description commune pour les Produits de la même Famille

Creates a Ring Shaped Beam
Uncoated and AR Coated Options Available
Multiple Apex Angles Available
Plano-Convex (PCX) Bessel Grade Axicons Available for Bessel Beam Applications

Plano-Convex (PCX) Ring Grade Axicons are used in generating ring profile laser beams and are available in several different Apex Angles from 90° to 160°. They feature controlled apex angle tolerances that create precise ring profiles. Plano-Convex (PCX) Ring Grade Axicons utilize a precision fused silica substrate and can be purchased with a broadband anti-reflection coating or as uncoated substrates. For axicons used to create diffraction-free Bessel Beams, Plano-Convex (PCX) Bessel Grade Axicons are available.

Note: For more information on axicons, please review our application note: An In-Depth Look at Axicons.

The ring thickness (t) is easily defined by taking ½ of the beam diameter (d_b):

The diameter of the ring (d_r) is defined using the length from lens output to image (L), the index of refraction of the lens material (n), and the angle (a) and can be approximated as follows:

For optimum performance, we recommend using Plano-Convex (PCX) Axicons in conjunction with one of our beam expanders in order to ensure a beam diameter of at least 50% of the clear aperture.