+86 21 51012729
info@bbotech.com
Bluebean Optical manufactures precision Germanium optical components, which are widely used for infrared applications, from thermal imaging and surveillance to remote sensing and IR spectroscopy. 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 Infrared (IR) Aspheric Lenses:
Bluebean Optical Tech Features:
- State-of-the-art production using Single Point Diamond Turning technique
- Available with BBAR coating and DLC coating
- Diameter from 5 mm upto 400 mm
- Proper surface cleaning techniques
- Enabling high-performance imaging, sensing, and spectroscopy
- Custom capabilities for both OEM and low quantity one-off orders
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 |