Plane ruled gratings are characterized by a superior efficiency at their design wavelength compared with holographic gratings. Plane Ruled gratings comprise the majority of diffraction gratings used in spectroscopic instrumentation and are especially useful in systems requiring high resolution.
China star optics can provide customers with a variety of replicated grating products such as diffraction gratings, reflective gratings,holographic gratings,concave gratings etc. to meet different needs. Maximum ruled area is up to 300 x 300 mm for plane ruled diffraction gratings. For replicated diffraction and transmission gratings the ruling density can be from 20 grooves per millimeter to 2400 grooves per millimeter, wavelength from 0.2 micron to 25 microns.
Plane Ruled Grating,Plane Ruled Diffraction Grating,Plane Reflection Grating,Plane Ruled Reflective Grating China Star Optics Technology Co.,Ltd. , https://www.realpoooptics.com
There will be significant precipitation in the eastern part of the northeastern region and in the southern part of northern Xinjiang.
1. There is obvious snowfall in the northeast
From the 6th to the 8th, there were many snowfalls in the eastern and northern parts of the Northeast. Among them, part of the northeastern part of Jilin and eastern Heilongjiang had large blizzards.
2. In the northern part of Xinjiang, there are large blizzards in the next three days, and more snowfall in northern Xinjiang. Among them, from 6th to 8th, there are big blizzards in Tacheng, Altay and western Tianshan in Xinjiang. From the 8th, a strong cold air entered Xinjiang, and then it will affect most of China from west to east.
3. There will be significant precipitation in the southern region
From the 6th to the 8th, most of the southwestern region, the western part of the south of the Yangtze River, and the western part of southern China have many rainy weather. Among them, some parts of Yunnan, eastern Guizhou, northwestern Guangxi, and Hunan have moderate to heavy rain.
Second, the specific forecast for the next three days
From 08:00 to 7:00 on the 6th, there are small to medium snow or sleet in the northern part of Xinjiang, northeastern Tibet, eastern Qinghai, southern Gansu, and eastern part of northeastern China. Among them, northern Xinjiang, northeastern Jilin, eastern Heilongjiang, etc. Some parts of the land are large to blizzard (6~12 mm). There are small to moderate rains or showers in most of the southwestern region, southwestern Shaanxi, western Hubei, Hunan, and western China. Among them, there are heavy rains in parts of western Yunnan, eastern Guizhou, and southwestern Hunan. There are 4 to 5 winds in the northern part of Xinjiang, most of Inner Mongolia, and the eastern part of the northeastern part of the country. The wind power in the Shankou area of ​​Xinjiang is 7-8. There is sand or floating dust in the western part of the southern Xinjiang Basin. There will be 6 to 7 northeast winds in the Taiwan Strait, the Bus Strait, the northeastern part of the South China Sea and the central and eastern waters.
From 08:00 to 8:00 on the 7th, there are small to medium snow (rain) or yurts in northern Xinjiang, eastern Tibet, southeastern Qinghai, northern Sichuan Plateau, southeastern part of northwest, northeastern Inner Mongolia, northeastern part of Northeast China. Snow, in which the northern part of northern Xinjiang and the Tianshan area, eastern Heilongjiang, and parts of northeastern Tibet have large blizzards (6~12 mm); most of the southwestern regions, western Jianghuai, Jianghan, central and western Jiangnan, western South China, Taiwan, etc. There are small to moderate rains or showers, including heavy rains in parts of western Yunnan, central Hunan, and southern Guizhou. There are 4 to 6 winds in northern Xinjiang, most of Inner Mongolia, and the eastern part of Northeast China. The Taiwan Strait, the Bus Strait, and the northeastern part of the South China Sea will have a northerly wind of 6-7.
From 08:00 to 9:00 on the 8th, there are light snow (rain) or sleet in the north of Xinjiang, northeastern Tibet, southeastern Qinghai, northern Sichuan Plateau, southern Gansu, northeastern Inner Mongolia, and most parts of Heilongjiang. Some areas in the west and eastern Xinjiang, northern and eastern Heilongjiang, northeastern Tibet and other places have medium to heavy snow (3 to 8 mm), local blizzard; southwestern region, southwestern Shaanxi, western Jianghuai, southern Jiangnan, central and western China, etc. There were small to moderate rains or showers. Among them, there were heavy rains in parts of western Yunnan, northern Hunan, northwestern Jiangxi, and northwestern Guangxi. There are 4 to 6 winds in the northern part of Xinjiang, the central and western parts of Inner Mongolia, and the eastern part of the northeastern part of the country. The wind power in the mountain pass area can reach 7 to 8 levels.
Holographic gratings:
Specifications:
Ruled area: <=70 * 70mm
Wavelength range: 0.2-0.8um
Grooves per mm: 1,200 to 3,600L/mm
Diffraction: >70%
Ruled gratings:
Specifications:
Ruled area: <=70 * 70mm
Wavelength range: 0.2-15um
Grooves per mm: 50 to 2,400L/mm
Diffraction: >70%
Concave gratings:
Specifications:
Ruled area: <=70 * 70mm
Wavelength range: 200 to 900um
Grooves per mm: 490 to 1,200L/mm
Diffraction: >70%
November 06: National weather forecast for the next three days
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