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Products / 光學產品 / Optical Lenses / Double-Concave Lenses / MgF2鍍膜雙凹 (DCV) 透鏡
檢視所有 13 產品系列

TECHSPEC 20mm Dia. x -20mm FL, MgF2 Coated, Double-Concave Lens

Stock #32-991
NT$1,098
×
Qty 1-9
NT$1,098
Qty 10
NT$990
Volume Pricing
Request a Quote
Diameter (mm):
20.00 +0.0/-0.025
Effective Focal Length EFL (mm):
-20.00
Back Focal Length BFL (mm):
-20.55
Coating:
MgF2 (400-700nm)
Coating Specification:
Ravg ≤1.75% @ 400 - 700nm
Substrate:
N-SF11
Surface Quality:
40-20
Power (P-V) @ 632.8nm:
1.5λ
Irregularity (P-V) @ 632.8nm:
λ/4
Clear Aperture CA (mm):
19.0
Center Thickness CT (mm):
2.00
Center Thickness Tolerance (mm):
±0.1
Centering (arcmin):
<1
Bevel:
Protective bevel as needed
Edge Thickness ET (mm):
5.03
f/#:
1.00
Focal Length Specification Wavelength (nm):
587.6
Focal Length Tolerance (%):
±1
Numerical Aperture NA:
0.50
Radius R1=-R2 (mm):
-31.82
Type:
Double-Concave Lens
Typical Energy Density Limit:
10 J/cm2 @ 532nm, 10ns
Wavelength Range (nm):
400 - 700

Regulatory Compliance

Reach 197:
Compliant
×
RoHS 2015:
Compliant
×

產品系列說明

  • 採用抗反射鍍膜，對於400 - 700nm的光可為表面提供小於1.75%的反射率
  • 針對0°入射角而設計
  • 多種鍍膜選擇： 無鍍膜、VIS 0°、VIS-NIR、NIR I及NIR II

雙凹 (DCV) 透鏡具有兩個向內彎曲的曲面以及負焦距。它們用於影像縮小及散射光線

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