To implement the "Notice of the State Council on Printing and Distributing the "12th Five-Year Plan" Energy Conservation and Emission Reduction Comprehensive Work Plan" (Guo Fa [2011] No. 26) and the "State Council's Reply on the 12th Five-Year Plan for Air Pollution Prevention and Control in Key Areas" Letter [2012] No. 146) requires strict implementation of national motor vehicle emission standards and promotion of environmental air quality improvement process. According to the relevant provisions of the Law of the People's Republic of China on Air Pollution Prevention and Control, the implementation of "compressed ignition and gas fuel for vehicles" is now implemented. Engine and Vehicle Exhaust Pollutant Emission Limits and Measurement Methods (China Phase III, IV, V) (GB17691-2005) "Gas Fuel Ignition Engine and Vehicle Phase 5 Emission Limits" (hereinafter referred to as "Country The five standards") related matters are announced as follows:
1. Since January 1, 2013, all gas-fired engines and vehicles that are manufactured, imported, sold, and registered must meet the requirements of the National Five Standards. Relevant enterprises should adjust their production, import, and sales plans in a timely manner.
2. Enterprises that produce and import gas-fueled ignition engines and automobiles shall submit an environmental protection type approval application to the Ministry of Environmental Protection in accordance with the requirements of the National 5th Standard, and submit the environmental production consistency guarantee plan, annual report and vehicle identification code (VIN) on time. )information. The Ministry of Environmental Protection issues an environmental type approval certificate for the models that have passed the audit.
3. As the main body responsible for the emission control of vehicle products, automobile manufacturers must establish and improve the environmental production consistency assurance system, and effectively strengthen the environmental protection compliance management of production processes, the quality control of key environmental components, and the self-inspection of vehicle product emissions to ensure actual production. The sales of vehicles have reached the requirements of the national five standards.
4. The Ministry of Environmental Protection continued to increase the consistency inspection of environmental protection production of motor vehicles, and adopted regular inspections and spot checks to comprehensively strengthen the environmental protection supervision of motor vehicle manufacturers. For those who do not meet the requirements of the standard, they will be ordered to rectify within a time limit; if they are still unqualified after the rectification, the environmental type approval certificate of the model will be cancelled and notified.
5. Local environmental protection departments at all levels must strictly implement emission standards in the work of periodic inspection of motor vehicle exhaust emissions and the issuance of environmental protection qualification marks. For vehicles that do not meet the requirements of the standard, the environmental protection departments at all levels shall not issue the environmental protection inspection mark, and cooperate with the public security traffic control department to stop their registration in the administrative region.
For the production, import and sale of vehicles exceeding the standard, the Ministry of Environmental Protection shall, in accordance with the relevant departments, impose penalties.
Ministry of Environmental Protection
December 3, 2012
Our Dome Lens is an optical window composed of two parallel curved surfaces. Dome lenses are commonly used in meteorology applications, pyranometers, defence applications and often used in high pressure viewports in underwater cameras and submersibles.For this reason our dome offer both high transmission as well as durability. Other application for our dome include visible-range domes for pyranometers and infrared-range domes for pyrgeometers, and as high pressure viewports in underwater cameras and submersibles.
BK7 or K9L domes are used primarily in meteorology applications. BK7 offers excellent transmission from 300nm up to 2µm. BK7 is a relatively hard material, with excellent chemical durability.
UV fused silica domes ( JGS1 ): For applications operating in the deeper UV range, we offers a range of UV fused silica domes. Fused silica domes are commonly used in underwater applications at extremely high pressures.
Sapphire domes: For infrared applications we can provide sapphire domes. Sapphire is an extremely hard material with transmission of over 80% in the 2-5µm wavelength range. As with fused silica, sapphire is able to withstand extreme pressures, making it the perfect material for underwater camera and missile fairing applications.
Specifiation of our dome lens as follow:
Material:Optical glass N-BK7 , H-K9L, UV Fused Silica, Sapphire, and infrared crystal materials.
Diameter:20-350mm
Diameter Tolerance:+/-0.1mm
Thickness:>2mm
Thickness Tolerance±0.2~0.1mm
Center Deviation:3-5'
Surface quality:80/50 60/40
Coating: Antireflection Coating inside
Chamfers:0.2 x 45° typical
300Mm Diameter Dome Lens,300 Mm Diameter Hemisphere Dome Lens,Glass Dome Lens For Camera,Dome Lens For Subsea Shooting
China Star Optics Technology Co.,Ltd. , https://www.csoptlens.com