Infra-red broadband anti-reflection coatings are offered for the two broad spectral passbands of 3 – 5 µm and 8-12 µm. Coatings are designed for the refractive index of the substrate so it is necessary to offer separate coatings for different substrate materials. Standard coatings are offered for Zinc Selenide and Germanium. These coatings are highly durable and can be cleaned repeatedly using normal optics handling techniques. They are suitable for high power laser use such as that emitted from a CO2 laser.
Optical Coatings,Optical Grade Coatings,Vampire Optical Coatings,Optical Interference Coatings Lambda Research Optics ChangChun,LTD. , https://www.lambdachina.com
Protected + Enhanced Metallic Coatings (PAL / EAL / PAG / EAG / PAU / EAU)
Metallic coatings make very broad bandwidth reflectors. Usually it is best to protect the coatings with a durable dielectric layer as they are very soft and susceptible to scratching. The efficiency of metallic reflectors falls off at shorter wavelengths but this may be enhanced by the application of a multi-layer dielectric thin film stack. The table shows the reflectance of each of the metals without any protection or enhancement. Protected metallic coatings have a dielectric coating layer over the metallic layer to protect the coating from being oxidized in the air or from scratched. For enhanced metallic coatings, a stack of dielectric layers are added on the metallic coating to increase reflectance for a particular wavelength range.
Dichroic Beamsplitters – Beam Combiners – Harmonic Separators (SPD / LPD / BC / HHS)
Highly Transmissive AR Coatings For FLIR Applications:
Metallic coatings make very broad bandwidth reflectors. Usually it is best to protect the coatings with a durable dielectric layer as they are very soft and susceptible to scratching. The efficiency of metallic reflectors falls off at shorter wavelengths but this may be enhanced by the application of a multi-layer dielectric thin film stack. The table shows the reflectance. of each of the metals without any protection or enhancement. Protected metallic coatings have a dielectric coating layer over the metallic layer to protect the coating from being oxidized in the air or from scratched. For enhanced metallic coatings, a stack of dielectric layers are added on the metallic coating to increase reflectance for a particular wavelength range.
Last week, Lunalu's height was blocked, and the trend was significantly weaker than other related metals. Once again, the confirmation of the resistance of $2,000 was strong and the callback was reasonable. However, the test of resistance levels of aluminum prices in the short term has confirmed that Lon Al has the ability to continue to operate upwards, and the current situation is undergoing constant corrections. In terms of the domestic market, in 2005 China not only canceled the aluminum export tax rebate, but also imposed a 5% tariff. The policy has attached great importance to the control over the domestic electrolytic aluminum investment overheating, and has a greater determination to limit the export of high-energy electrolytic aluminum exports. After the implementation of the new tax rate, the domestic aluminum export volume will decrease, and the supply and demand relationship in the domestic aluminum market will face a new readjustment. The reduction in exports also means that the volume of imports must also be reduced accordingly, so that the market can regain the balance. In addition, domestic electrolytic aluminum production costs are currently high, and domestic electrolytic aluminum production is expected to decline gradually, making preparations for the development of aluminum prices in the future. In addition, the high cost of alumina may limit the space for falling aluminum prices. At present, Barclays Capital pointed out that in 2005 global aluminum demand will increase by 5.3% to 31.2 million tons, and the global aluminum supply gap will reach 371,000 tons. Consumers have used inventory to make up for the gap in aluminum supply. At present, the total aluminum inventory of LME has dropped to 620,000 tons, which is more than half the level of 1.4 million tons at the beginning of the year. It is apparent that there is support for aluminum prices. At the same time, since the US fiscal and trade deficit has not changed, the value of the US dollar will continue to be suppressed in the medium and long term. The continued weakness of the US dollar also supports aluminum prices. Feedback from the spot market, the price changes are not, the seller is not in a hurry to ship, so the market did not sell to suppress the aluminum price, the spot more than the final reported between yuan, did not leave the recent highs. Chinalco's offer of electrolytic aluminum remained unchanged on February 24, with an average price of 16,400 yuan in East China Market, 16,500 yuan in South China Market and 16,350 yuan in Southwest China Market. In Shanghai on February 24th, the spot price range was between 16270 and 16290 yuan/ton, and the spot price was slightly weaker. From a technical point of view: from May 2004 to present, Shanghai Aluminum has all walked in a gentle upward path, facing a dilemma. This week, the price of LME aluminum prices showed a sharp rise and fall, showing signs of further activity in the external aluminum trading. Compared with the trend of other related metals, the recent upside momentum of aluminum is obviously insufficient. Last weekend, the price of the aluminum had a certain decline compared with the closing price of last week. However, the support for further decline will be concentrated in the vicinity of the previous platform from 1860 to 1900. In general, the short-term adjustment of Shanghai aluminum futures price structure will remain. All factors affecting the later trend of aluminum prices are still “concealedâ€. It remains to be seen whether Shanghai aluminum prices can continue to rise. However, due to the substantial increase in the overall price of alumina and the increase in electricity prices since the beginning of this year, the production cost of primary aluminum has increased substantially from last year. At present, the Shanghai Aluminum price is still struggling near its production cost, and the downside space will be relatively limited. The trend of the midline will still maintain its tendency to rise and fall, and it is recommended to wait for market corrections before looking for new buying points. Operational advice: investors wait and see in the short term and buy on the midline. At the same time pay close attention to LME market trends and domestic spot premiums and discounts. Source: China International Futures Brokerage Co., Ltd.