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25.4mm Dia x 200.0mm EFL, Uncoated, Silicon PCX Lens

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Stock #66-295 Clearance
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£106.21
Qty 1+
£106.21
Volume Pricing
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Diameter (mm):
25.40 +0.00/-0.13
Effective Focal Length EFL (mm):
200.00 @ 4µm
Back Focal Length BFL (mm):
199.19
Coating:
Uncoated
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Silicon (Si)
Surface Quality:
80-50
Irregularity (P-V) @ 632.8nm:
Focal Length Tolerance (%):
±2
Centering (arcmin):
<3
Center Thickness CT (mm):
2.10 ±0.2
Edge Thickness ET (mm):
2.0
Radius R1 (mm):
483.10
Clear Aperture CA (mm):
22.86
f/#:
7.87
Numerical Aperture NA:
0.06
Effective Focal Length EFL @ 1.55μm (mm):
194.97
Effective Focal Length EFL @ 2.94μm (mm):
198.56
Effective Focal Length EFL @ 4.0μm (mm):
200.00
Effective Focal Length EFL @ 5.0μm (mm):
199.45
Type:
Plano-Convex Lens
Bevel:
Protective bevel as needed
Wavelength Range (nm):
1200 - 7000

Regulatory Compliance

RoHS:

Product Family Description

  • Low Dispersion and Density
  • Transmission from 1.2 to 7μm

Silicon is a popular NIR material for the 1.2 to 7μm region due to its low cost and low density. Because of its low density (half that of Germanium or Zinc Selenide), Silicon is ideal for weight-sensitive applications, especially those in the 3 -5μm region. Density is 2.33 g/cm3 and Knoop Hardness is 1150, making it harder and less brittle than Germanium.

Plano-Convex (PCX) Lenses have a positive focal length, making them ideal for collecting and focusing light. They are also useful in a variety of applications involving emitters, detectors, lasers, and fiber optics. Available in a wide variety of diameters and focal lengths, our Silicon Plano-Convex (PCX) Lenses are uncoated to allow for a wide NIR transmission band.

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