TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

75mm de Dia., 4mm Épaisseur, traité NIR I, λ/4 Fenêtre N-BK7

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Stock #84-359 En Stock
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€200,00
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€160,00
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Nombre d'Abbe (vd):
64.17
Biseau:
Protective as needed
Ouverture Utile (%):
90
Ouverture Utile CA (mm):
67.50
Diamètre (mm):
75.00 +0.0/-0.25
Épaisseur (mm):
4.00 ±0.20
Traitement:
VIS-NIR (400-1000nm)
Spécification du Traitement:
Rabs ≤0.25% @ 880nm
Ravg ≤1.25% @ 400 - 870 nm
Ravg ≤1.25% @ 890 - 1000nm
Coéfficient d'Expansion Thermique CTE (10-6/°C):
7.1 (-30 to +70°C)
8.3 (+20 to +300°C)
Densité (g/cm3):
2.51
Bords:
Fine Ground
Indice de Réfraction nd:
1.516
Dureté de Knoop (kg/mm2):
610
Parallélisme (arcmin):
<1
Rapport de Poisson:
0.206
Substrat: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Planéité de Surface (P-V):
λ/4
Qualité de Surface:
60-40
Type:
Protective Window
Gamme de Longeur d'Onde (nm):
400 - 1000
Module d'Élasticité de Young (GPa):
82
Type of Window:
Glass
Damage Threshold, By Design: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
5 J/cm2 @ 532nm, 10ns

Conformité réglementaire

RoHS 2015:
Certificate of Conformance:
Reach 235:

Description commune pour les Produits de la même Famille

  • Tailles circulaires et carrées de 5 mm à 150 mm
  • 7 options de traitements antireflets à large bande disponibles
  • La plus grande sélection au monde de fenêtres standard N-BK7
  • Également disponibles : Fenêtres Ultra-Minces N-BK7

Les Fenêtres de Précision λ/4 en N-BK7TECHSPEC® conviennent parfaitement aux applications laser industrielles et de faible puissance. Leur concept haute-tolérance produit une distorsion et une dispersion du rayon minimes. Les options de traitement à larges bandes élargissent la gamme de ces fenêtres de précision grâce au spectre visible et proche infrarouge.

Remarque : Les nouveaux ajouts à cette famille de produits peuvent être précisés avec une spécification de distorsion du front d'onde transmis (TWD) au lieu d'une planéité de surface. Pour plus d'informations sur la différence entre ces deux spécifications, consultez notre note d'application Comprendre les fenêtres optiques

Informations Techniques

N-BK7

Typical transmission of a 3mm thick, uncoated N-BK7 window across the UV - NIR spectra.

Click Here to Download Data

Typical transmission of a 3mm thick N-BK7 window with MgF2 (400-700nm) coating at 0° AOI.

The blue shaded region indicates the coating design wavelengh range, with the following specification: 

Ravg ≤ 1.75% @ 400 - 700nm (N-BK7)

Data outside this range is not guaranteed and is for reference only.

Click Here to Download Data

Typical transmission of a 3mm thick N-BK7 window with VIS-EXT (350-700nm) coating at 0° AOI.

The blue shaded region indicates the coating design wavelengh range, with the following specification: 

Ravg ≤ 0.5% @ 350 - 700nm

Data outside this range is not guaranteed and is for reference only.

Click Here to Download Data

Typical transmission of a 3mm thick N-BK7 window with VIS-NIR (400-1000nm) coating at 0° AOI.

The blue shaded region indicates the coating design wavelengh range, with the following specification: 

Rabs ≤ 0.25% @ 880nm
Ravg ≤ 1.25% @ 400 - 870nm
Ravg ≤ 1.25% @ 890 - 1000nm

Data outside this range is not guaranteed and is for reference only.

Click Here to Download Data

Typical transmission of a 3mm thick N-BK7 window with VIS 0° (425-675nm) coating at 0° AOI.

The blue shaded region indicates the coating design wavelengh range, with the following specification: 

Ravg ≤ 0.4% @ 425 - 675nm

Data outside this range is not guaranteed and is for reference only.

Click Here to Download Data

Typical transmission of a 3mm thick N-BK7 window with YAG-BBAR (500-1100nm) coating at 0° AOI.

The blue shaded region indicates the coating design wavelengh range, with the following specification: 

Rabs ≤ 0.25% @ 532nm
Rabs ≤ 0.25% @ 1064nm
Ravg ≤ 1.0% @ 500 - 1100nm

Data outside this range is not guaranteed and is for reference only.

Click Here to Download Data

Typical transmission of a 3mm thick N-BK7 window with NIR I (600 - 1050nm) coating at 0° AOI.

The blue shaded region indicates the coating design wavelengh range, with the following specification: 

Ravg ≤ 0.5% @ 600 - 1050nm

Data outside this range is not guaranteed and is for reference only.

Click Here to Download Data

Typical transmission of a 3mm thick N-BK7 window with NIR II (750 - 1550nm) coating at 0° AOI.

The blue shaded region indicates the coating design wavelengh range, with the following specification: 

Rabs ≤ 1.5% @ 750 - 800nm
Rabs ≤ 1.0% @ 800 - 1550nm
Ravg ≤ 0.7% @ 750 - 1550nm

Data outside this range is not guaranteed and is for reference only.

Click Here to Download Data

 
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