There are two situations in the appearance of stone diseases: First, due to improper construction methods or the use of stone protection products, the stone causes diseases such as water spots and alkali return; secondly, it is affected by environment and air pollution during long-term use, so that some of the stones Chemical changes occur in natural minerals, causing rust, discoloration, and fading of stone. Through a variety of technical treatments, the stone can be restored or close to the original decorative effect. Take the 5 years of imported large green stone as an example:
The first step is to scrub the surface of the stone and remove the dirt that has penetrated into the stone. After the completion, apply the rust remover. Marble rust remover, the rust removal effect is slower, and the rust is heavier to remove it after 5 times of cleaning. If the construction period is short, granite rust remover can be used, which has corrosive effect on stone stone. Therefore, it can be diluted 1 times to be used above. Serious rust can be removed only twice.
The second step is to clean the stone with water, and the stone surface is dried to prepare a stone coloring agent. Taking Dahua Green Stone as an example, two green and black colorants are mixed at 1:0.3, and 1 times the amount of stone coloring diluent is added. The use of a diluent is to reduce the concentration of the colorant, and the second is to allow the colorant to penetrate into the deeper part of the stone.
The third step is to apply coloring agents and protectants. The coloring agent should be evenly applied, and it should be allowed to stand for more than 2 hours after painting. After the surface is dry, wipe off the surface. Check that the coloring is uniform. If unevenness is found, the coloring should be repeated. After making sure that it is correct, apply a brightening stone protectant and wipe off the surface float after 2 hours. The comprehensive treatment of stone curing stone disease is not only applicable to the old stone, but also applicable to the newly installed stone. For example, the newly installed stone has a large color difference and is subjected to color processing. Another example is the color change treatment of the stone, which turns the light stone into yellow, red, green and black. The comprehensive treatment of stone is determined by the variety of stones and the condition of the disease.
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Windows are desiged for use in optical systems to separate two enviroments while passing a particular spectral range between them.Applications include laser set-ups (e.g.at Brewster's angle),emitter,detector protection devices, such as in sepctrophotometers and imaging systems.
China Star Optics offers all types of windows made from different materials. Such as N-BK7, Fused silica, sapphire,CaF2, Silicon, Borofloat, high borosilicate glass and other optical glass supplied by Schott and Chinese CDGM are available upon request. Windows at shape of round,quadrate, triangular or other polygonal are also available upon request.In addition, we provide a variety of single layer or multiplayer anti-reflecting coating,HR,PR coatings on Optical Windows.
Specification of our optical windows as follow:
*Material:high borosilicate glass, BK7,UV-grade fused silica (JGS1) or other optical crystals materials
*Length tolerance:+/-0.01
*Width tolerance:+/-0.01
*Center thickness tolerance:0.005mm
*Surface quality:80-50 to 10-5 Scratch/Dig
*Surface flatness:<lambda to lambda/20
*Parallelism<=1min -- 2sec
*Clear Apenture:80% -- 100%
Infrared Window,Zinc Selenide Windows,Znse Wedged Window,Zinc Selenide Laser Window
China Star Optics Technology Co.,Ltd. , https://www.realpoooptics.com