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Silicon Windows

Silicon is used as an optical window primarily in the 3 to 5 micron band and as a subsrate for production of optical filters and windows.
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IR Windows Silicon Windows


Silicon (Si) is grown by Czochralski pulling techniques (CZ) and contains some oxygen that causes an absorption band at 9 microns. To avoid this, material can be prepared by a Float-Zone (FZ) process. Optical silicon is generally lightly doped (5 to 40 ohm cm) for best transmission above 10 microns, and doping is usually boron (P-type) and phosphorus (N-type). After doping silicon has a further pass band: 30 to 100 microns which is effective only in very high resistivity uncompensated material.


CZ Silicon is commonly used as substrate material for infrared reflectors and windows in the 1.5-8 micron region. The strong absorption band at 9 microns makes it unsuitable for CO2 laser transmission applications, but it is frequently used for laser mirrors because of its high thermal conductivity and low density.


Application as Silicon window, Silicon lens in the 1.5-7um region; Silicon Mirror for CO2 laser and spectrometer applications.


Silicon(SI) Windows SPECIFICATION:


Material: Silicon(Si)
Dimension Tolerance: +0.0, -0.1mm
Thickness Tolerance: ± 0.1mm
Surface quality: 60/40
Clear Aperture: >85%
Flatness: λper 25mm
Parallelism: 3'
Bevel: <0.25mm X 45°
Coating: AR Coated or HR Coated
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UN-TFA2518X-12MP
UN-TFA2518X-12MP

Taurus Series 4/3 Format FA Lens(12MP)

Model

UN-TFA2518X-12MP

Focal length

25mm

   


Aperture

F2.0-F22

Image Format

4/3(23mm)

Mount

C

 

Field Angle

D x H x V (°)

 

4/3

1

1/2"

D

49.8°

35.8°

18.3°

H

40.6°

28.9°

14.6°

V

31.1°

21.8°

11.1°

Optical Distortion

-0.64%@

y=11.5mm

-0.48%@

y=8.0mm

-0.15%@

y=4.0mm

M. O. D.

0.15m

Dimension

Φ47.3*82.7mm

Back Focal Length

22mm

Design Wavelength

420~1000nm

Operation

Manual  Iris

Manual  Focus

Filter Thread

M46.0×P0.75

Weight

248g

Work Temperature

-20℃+60℃

  

UN-ALS50J01
UN-ALS50J01

Product Features:


· Developed for 32mm big frame sensor

· Large Aperture, upto F2.4
· High relative illumination
· Lens for 2K, 4K, 8K line scan camera
· Excellent optical performance, uniform imaging of center and edge
Color Glass Filters with AR coating
High Precision Colored Glass Filters
Colored glass filters are optical components that control incident wavelength by distributing an optical absorbing substance in glass.
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