The refractive index of the monocrystalline silicon material is about 3.42, and the reflectivity of the silicon lens after polishing is about 30% in the air environment. Our common silicon lens and silicon window can be coated on the surface (Antireflection Coating), which can reduce the reflectivity to less than 1.5% between 3 to 5 um.
Some silicon elements, especially the silicon protected windows, are exposed to dust, acid, salt and so on in the harsh environment. The conventional multilayer antireflection coating will be damaged and affect the normal work of the equipment. At this time, we need to make DLC coating on the surface of the silicon lens.
Diamond-Like Carbon (DLC) Coated Silicon Windows are engineered for 3 to 5µm, making them ideal for infrared defense applications such as thermal imaging.
Silicon Lens,Silicon Optical Lens,Infrared Si Lens,Silicon Plano-Convex Lens China Star Optics Technology Co.,Ltd. , https://www.csoptlens.com
we are top supplier in Tianjin with over ten years experience in manufacturing and exporting steel pipe. Our main market is South America, Southeast Asia, Middle east, South Korea, India,etc. Best quality, reasonable price and professional service will be your best choice.
Black pipe, welded steel pipe under ASTM A53
Nominal Size
   O.D. (mm)
 W.T (mm)
        Weight Grade
 Sch
 Grade A Test Pressure    (Mpa)
 Weight (black pipe) plain end  (kg/m)
 1/2
21.3
2.77
STD
40
4.83
1.27
 3/4
26.7
2.87
STD
40
4.83
1.69
1Â Â Â Â
33.4
3.38
STD
40
4.83
2.5
1Â 1/4
42.2
3.56
STD
40
8.27
3.39
1Â 1/2
48.3
3.68
STD
40
8.27
4.05
2Â Â Â Â
60.3
3.91
STD
40
15.86
5.44
2Â 1/2
73
5.16
STD
40
17.24
8.63
3Â Â Â Â
88.9
5.49
STD
40
15.31
11.29
4Â Â Â Â
114.3
6.02
STD
40
13.1
16.07
5Â Â Â Â
141.1
6.55
STD
40
11.5
21.73
6Â Â Â Â
168.3
7.11
STD
40
10.5
28.26
Â
we are top supplier in Tianjin with over ten years experience in manufacturing and exporting steel pipe. Our main market is South America, Southeast Asia, Middle east, South Korea, India,etc. Best quality, reasonable price and professional service will be your best choice.
Black pipe, welded steel pipe under ASTM A53
Nominal Size
   O.D. (mm)
 W.T (mm)
        Weight Grade
 Sch
 Grade A Test Pressure    (Mpa)
 Weight (black pipe) plain end  (kg/m)
 1/2
21.3
2.77
STD
40
4.83
1.27
 3/4
26.7
2.87
STD
40
4.83
1.69
1Â Â Â Â
33.4
3.38
STD
40
4.83
2.5
1Â 1/4
42.2
3.56
STD
40
8.27
3.39
1Â 1/2
48.3
3.68
STD
40
8.27
4.05
2Â Â Â Â
60.3
3.91
STD
40
15.86
5.44
2Â 1/2
73
5.16
STD
40
17.24
8.63
3Â Â Â Â
88.9
5.49
STD
40
15.31
11.29
4Â Â Â Â
114.3
6.02
STD
40
13.1
16.07
5Â Â Â Â
141.1
6.55
STD
40
11.5
21.73
6Â Â Â Â
168.3
7.11
STD
40
10.5
28.26
Â
Diamond-Like Carbon (DLC) Coated Silicon Windows provide anti-reflection coating on one surface and a specially designed DLC coating on the other surface, making these windows highly durable and ideal for harsh environments.
Silicon lens specifications:
Standard precision
High-precision
Dimension Tolerance
φ5-250mm+0/-0.2
φ3-350mm+0/-0.2
Thickness Tolerance
1-50mm+/-0.1
1-50mm
Centration
3 arc minute
1 arc minute
Surface Quality
60/40
20/10
Power(fringe@633nm)
N<λ/2@633nm(in 25mm)
N<λ/10@633nm(in 25mm)
Clear Aperture
>90%
>95%
Chamfer
Protected <0.5mmx45deg
Protected <0.5mmx45deg
Hot Sale Black Painting ERW Round Steel Pipes and Tubes with Plastic Cap
Model NO.: 1/2"-8"
Standard: BS1387 ASTM A3
Color: Black
Length: 1-12m
End Protecter: Plastic Cap
Thread: NPT BS21
Delivery Time: 30 Days After Deposit
Trademark: bridge steel
Transport Package: Standard Export Bundle Package
Specification: 3/8"-8"
Origin: Tianjin China
HS Code: 73063090
Model NO.: 1/2"-8"
Standard: BS1387 ASTM A3
Color: Black
Length: 1-12m
End Protecter: Plastic Cap
Thread: NPT BS21
Delivery Time: 30 Days After Deposit
Trademark: bridge steel
Transport Package: Standard Export Bundle Package
Specification: 3/8"-8"
Origin: Tianjin China
HS Code: 73063090
Hot Sale Black Painting ERW Round Steel Pipes And Tubes With Plastic Cap
Description:
Hot Sale Black Painting ERW Round Steel Pipes And Tubes With Plastic Cap
Description: