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N-BK7 and Fused Silica Wedge Prisms

Wedge prism is an optical element with plane-inclined surfaces, usually the faces are inclined toward one another at a very small angles.  It diverts light toward its thicker portion.  Wedge prisms can be used as isolating components. Wedges may also be used to produce a small deviation which doesnt allow return to source.
  • product origin:

    China
  • shipping port:

    Fuzhou China
  • lead time:

    4 working weeks
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  • description

1. What is wedge prism used for?

 

Wedge prism is an optical element with plane-inclined surfaces, usually the surfaces are inclined toward one another at a very small angles. It diverts light toward its thicker portion. Wedge prisms can be used as isolating components. Wedges may also be used to produce a small deviation which doesn’t allow return to source.

 

2.What kinds of materials can UNI Optics use to make right angle prism?

 

N-BK7, Grade A optical glass, Fused silica

 

3. What is UNI Optics regular manufacturing capability for wedge prism?


Wedges Prisms  Wedge Prisms


Specification

Standard capability

Dimensional Tolerance

+/-0.1mm

Wedge Tolerance

+/-0.1mm

Flatness

λ/4@632.8nm

Surface Quality

60-40

Coating: Optional

Bevel: protective



4. What is the typical size?



Part No.

Diameter

Material

Deviation

Wedge

T(mm)

 

 

 

angle(α)

angle(β)

Thickest

UWGA001

Φ25.4

N-BK7

1°57

3.86

UWGA002

Φ25.4

N-BK7

3°53

4.72

UWGA003

Φ25.4

N-BK7

7°41

6.43

UWGA004

Φ25.4

N-BK7

11°21

8.11

UWGA005

Φ25.4

N-BK7

14°51

9.74

UWGA006

Φ25.4

N-BK7

10°

18°08

11.33

UWGJ001

Φ25.4

JGS1

2°4

3.88

UWGJ002

Φ25.4

JGS1

4°7

4.78

UWGJ003

Φ25.4

JGS1

8°14

6.57

UWGJ004

Φ25.4

JGS1

12°21

8.4

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1.  Germanium (Ge)


Germanium (Ge) is the preferred lens and window material for high performance infrared imaging systems in the 8–12 μm wavelength band. Its high refractive index makes Ge ideal for low power imaging systems because of minimum surface curvature. Chromatic aberration is small, often eliminating the need for correction.

 

Crystallographic properties
Syngony Cubic
Crystal Form Poly or Single Crystal
Lattice Constant 5.66
Cleavability <111>, non-perfect
Molecular Weight 72.6
Physical properties
Density, at 20 °C 5.33
Hardness, Mohs 6.3
Dielectric Constant for 9.37 × 109 Hz at 300 K 16.6
Melting 937
Thermal Conductivity, W/m·K at at 293 K 59
Thermal Expansion, 1/K at 298 K 6.1 × 10-6
Specific Heat Capacity, J/(kgK) at 273-373 K 0.074
Bandgap, eV 0.67
Knoop Hardness, kg/mm2 800
Youngs Modulus, Gpa 102.66
Shear Modulus, GPa 67.04
Bulk Modulus, GPa 77.86
Debye Temperature, K 370
Poissons Ratio 0.278
Elastic Coefficient C11=129, C12=48.3, C44=67.1
Apparent Elastic Limit 89.6 MPa (13000psi)
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Solubility in water None
Solubility in acids Soluble
Molecular Weight 72.59

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Crystallographic properties
Syngony Cubic
Lattice Constant, A 5.43
Physical properties
Density 2.33g/cm3
Hardness, Mohs 7
Dielectric Constant for 9.37 x 109 Hz 13
Melting point, оС 1414
Thermal Conductivity, W/m·K at 313 K 163
Thermal Expansion, 1/K at 293 K 2.6x10-6
Specific Heat Capacity, J/(kg°C) 712.8
Bandgap, eV 1.1
Knoop Hardness, kg/mm2 1100
Youngs Modulus, Gpa 130.91
Shear Modulus, GPan 79.92
Bulk Modulus, GPa 101.97
Debye Temperature, K 640
Poissons Ratio 0.28
Chemical properties
Solubility in water None
Molecular Weight 28.09

3、ZnS material:


ZnS MultiSpectral Under intense heat and pressure, defects within the crystalline lattice are virtually eliminated, leaving a water-clear material with minimal scatter and high transmission characteristics from 0.4 to 12 microns. This material is particularly well suited for high-performance common aperture systems that must perform across a broad wavelength spectrum.

Specifications:

Material: ZnS MultiSpectral
Diameter Tolerance: --------------------- +0.0, -0.1mm
Thickness Tolerance: -------------------- ±0.1mm
Clear Aperture: ---------------------------->85%
Parallelism: -----------------------------------3 arc minute
Surface Quality: ----------------------------80-50 scratch and dig
Wavefront Distortion: -------------------- λ /2 per 25mm @633mm
Bevel: -----------------------------------------Protective  (<0.2mm x 45° )
Coating: -------------------------------------- Optional (Uncoated, AR Coating, etc.)


4. ZnSe material


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ZnSe is non-hygroscopic and chemically stable, unless treated with strong acids. It’s safe to use in most industrial field, and laboratory environments.



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