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
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
DY, DYP multi-stage centrifugal pump for the transportation of solid particles of petroleum products, petrochemical processes and other chemical products, can also be used for boiler feed water. (T) = -45- + 200 ℃ Performance Range Flow (Q): 8.4 - 350m3 / h Head (H): 400- 1560m DY, DYP-type multi-stage centrifugal pump is introduced in our plant digestion Based on advanced technology, self-developed new products, in full accordance with the American Petroleum Institute AP1610 standard (eighth edition) design and manufacturing. Product Features 1. Using the latest efficient hydraulic model at home and abroad, high efficiency, good cavitation performance. 2. Vibration noise, safe and reliable operation. 3 installation and maintenance easy. 4. Fully furnished, good controllability. 5. Processing and manufacturing of high precision, the main pressure parts forging stainless steel or carbon steel. Pump Structure Introduction 1. DY type is horizontal, single-shell, radial split multistage centrifugal pump, suction inlet, outlet flange are vertical upward, horizontal center support; DYP-type pump inlet for the level of discharge Can be horizontal or vertical, the foot support. 2. Impellers, balance drum, sleeve and so on are mounted on the shaft, the rotor components from both ends of the radial bearing for the bearing and axial limit. 3. Axial force balance by the double balance drum, the residual axial force by the thrust bearing. 4. Wear bars to inhalation section, the middle, spit out the link into one. 5. Bearings with sliding bearings, thrust bearings to the heart thrust ball bearings or Mitchell thrust bearings. 6. Bearing lubrication using self-lubricating (oil ring) or forced lubrication. 7. Static sealing metal surface seal, wound gasket seal and "O" ring seal. 8. Dynamic seal for the mechanical seal, flushing methods are self-cycle flushing, tap flushing and external flush three ways.