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Ge (Germanium)

GermaniumBluebean Optical manufactures precision Germanium optical components, which are widely used for infrared applications. Its useful transmission range is from 1.8um m to 17um m. Due to wide transmission range and opaque in visible, Ge is well suited for manufacturing of optical components for IR applications in lasers and optical systems. Its high index of refraction (greater than 4) makes it of particular interest for lens design. Germanium components are used with AR coatings because of high surface reflectivity of substrate.


Germanium Characteristics & Transmission Curve  


Germanium Windows Specifications:

 

 Material

 Germanium

 Dimension Tolerance

 +0.0/-0.1mm

 Thickness Tolerance

 ±0.1mm

 Surface Accuracy

 λ/4@632.8nm

 Surface Quality

 60-40

 Parallelism

 <1'

 Clear Aperture

 >90%

 Bevel

 <0.2x45°

 Coating

 upon request


Germanium Round Windows:

 

Part No.

Dia(mm)

T(mm)

RWG00602

6.00

2.00

RWG01003

10.00

3.00

RWG01203

12.70

3.00

RWG01503

15.00

3.00

RWG02503

25.40

3.00

RWG03005

30.00

5.00

RWG03805

38.10

5.00

RWG05005

50.80

5.00

 

Germanium Square Windows:


Part No.

H(mm)

L(mm)

T(mm)

SWG01003

10.00

10.00

3.00

SWG01203

12.70

12.70

3.00

SWG01503

15.00

15.00

3.00

SWG02003

20.00

20.00

3.00

SWG02503

25.40

25.40

3.00

SWG03005

30.00

30.00

5.00

SWG03805

38.10

38.10

5.00


Ge Lenses Specifications:


  Material

 Germanium

  Design Wavelength

 10.6μm

  Focal Length Tolerance

 ±1%

  Diameter Tolerance

 +0.0/-0.1mm

  Thickness Tolerance

 ±0.2mm

  Surface Accuracy

 λ/2@632.8nm

  Surface Quality

 60-40

  Centration

 <3'

  Clear Aperture

 >80%

  Bevel

 <0.2x45°

  Coating

 AR Coating @ 8-12μm


Germanium Plano-Convex Spherical Lenses:


Part No.

Dia

EFL

R

Tc

Te

BFL

PCXG12015

12.70

15.00

45.04

2.50

2.00

14.38

PCXG12020

12.70

20.00

60.06

2.30

2.00

19.43

PCXG12040

12.70

40.00

120.11

2.20

2.00

39.45

PCXG25025

25.40

25.40

76.27

3.10

2.00

24.63

PCXG25050

25.40

50.00

150.14

4.00

3.50

49.00

PCXG25075

25.40

75.00

225.21

4.00

3.60

74.00

PCXG25100

25.40

100.00

300.28

4.00

3.70

99.00

PCXG25150

25.40

150.00

450.42

4.00

3.80

149.00

PCXG25200

25.40

200.00

600.56

4.00

3.90

199.00

PCXG25500

25.40

500.00

1501.39

2.10

2.00

499.48

PCXG25750

25.40

750.00

2252.09

2.00

2.00

749.50

PCXG25101

25.40

1000.00

3002.79

2.00

2.00

999.50