Most people think that the unopened new hydraulic oil must be very clean. However, it has been found through inspection that the new oil that has not been filtered and purified by the Parker filter truck often exceeds the specified requirements.
Germanium Plano-Convex (PCX) Lenses feature precision diamond turned surfaces making them ideal for a variety of infrared applications, including thermal imaging, infrared spectroscopy, and remote sensing. Germanium (Ge) is popular for its high index of refraction, broad transmission range, and rugged mechanical properties. These lenses are available in 25 and 50mm diameters, uncoated, or with multiple broadband coating options.
Germanium (Ge) material feature high index of refraction (around 4.0 from 2 - 14μm), an anti-reflection coating is recommended on these germanium windows for sufficient transmission in the region of interest. Germanium is subject to thermal runaway, meaning that the transmission decreases as temperature increases. As such, these germanium windows should be used at temperatures below 100°C. Germanium`s high density (5.33 g/cm3) should be considered when designing for weight-sensitive systems.
Germanium windows specifications
Most people think that the unopened new hydraulic oil must be very clean. However, it has been found through inspection that the new oil that has not been filtered and purified by the Parker filter truck often exceeds the specified requirements.
The results of domestic surveys show that the current pollution level of standard barrel new oil is generally NAS10-14. Foreign survey results show that the pollution degree of most new oils exceeds the pollution degree of actual hydraulic system oil. There are many reasons for new oil pollution, including pollution from refining, packaging, transportation to storage. According to the performance index of China's petroleum products, the content of solid particulate pollutants below 0.005% is considered to be “no mechanical impuritiesâ€. The mechanical impurity in the oil is O. At 005%, the pollution level is equivalent to NAS12. In this way, the degree of contamination of the new factory oil may have exceeded the allowable pollution degree of the system oil.
Therefore, new oils that do not meet the required cleanliness must be filtered and purified before use. The cleanliness of new oils should generally be 1-2 higher than the cleanliness required by hydraulic systems. For general hydraulic systems, the cleanliness of new oil should be controlled to the 16/13 level (NAS 7 level); for hydraulic systems with servo valves, the cleanliness of new oil should not be lower than 14/11 (NAS 5). The new oil purification can be filtered by Parker filter car, and the filtration precision can be 2-10um as needed. If the water content in the new oil exceeds the specified value, water removal treatment is required. Otherwise, your hydraulic system may be contaminated. If the water vapor is fused into the oil and the emulsion is formed, then your big trouble is really coming: it can be solved without changing the new hydraulic oil! It will cause you a great waste in time and money.
How can you effectively avoid these risks? The Parker Filter Cart can efficiently clean new hydraulic fluids. The dirt absorption capacity of the Parker filter oil double filter is stronger than the traditional oil filter trolley, the filtration precision is up to 2 microns, the filtration time is shorter, the filter life is longer, the operation is convenient and fast, and the filter replacement indicator can be avoided. Go to the trouble of finding the filter replacement record. Buy a Parker filter car and your hydraulic oil replacement cycle is at least doubled. Change the oil less, your Paike filter car costs will earn back! For more details, please visit
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Standard precision
High-precision
Dimension Tolerance
φ5-250mm+0/-0.2
φ3-350mm+0/-0.2
Thickness Tolerance
1-50mm+/-0.1
1-50mm
Parallelism
1 arc minute
10 arc seconds
Surface Quality
60/40
20/10
Flatness
N<λ/2@633nm(at 50mm)
N<λ/10@633nm(at 50mm)
Clear Aperture
>90%
>95%
Chamfer
Protected <0.5mmx45deg
Protected <0.5mmx45deg
Germanium Lens,Ge Infrared Aspheric Lens,Germanium Aspheric Lens,Germanium Infrared Lens
China Star Optics Technology Co.,Ltd. , https://www.realpoooptics.com