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The Maintenance Of Optical Elements Is Very Important

- Aug 15, 2017 -

The subtle nature of optical elements requires that special procedures be followed in the processing of optical elements to maximize their performance and longevity. In daily use, optical elements are exposed to contaminants such as dust, water and skin grease. These contaminants increase the scattering of the optical surface and the absorption of the incident light, which creates a hot spot on the optical surface, causing permanent damage. The optical elements of the coating are particularly susceptible to such damage.

By using appropriate processing techniques, the number of cleaning optical components can be reduced and their service life improved. Please open the optical element in a clean, Optical Components temperature controlled environment. Do not handle optical elements directly with your hand, because the skin grease will cause permanent damage to the surface of the optical element. Conversely, you can operate with gloves, Optical Components which are more convenient for smaller optical elements, using optical tweezers or vacuum tweezers. Whatever method is used to clamp an optical element, it can only be clamped along a non optical surface, such as the matte edge of an optical element.

Importance: Holographic grating, notch grating, first unprotected metal reflector, and thin film splitter (this is not an exhaustive list) of the optical surface must not be touched by hand or optical operating equipment. These surfaces are particularly sensitive, Optical Components and any physical contact can cause damage.

Warning: Most crystals (such as calcite, splitter, lithium niobate crystals, and electro-optic modulators) are sensitive to temperature and burst when exposed to a thermal shock environment. Therefore, make sure that the packaging and items are placed in a temperature-stabilized environment before opening. Optical Components These crystals are more fragile than ordinary optical elements, so they are more carefully operated when cleaning.

Do not place optical elements on a hard surface because the optical elements or contaminants on their surfaces will grind the optical elements. In contrast, most optical elements should be wrapped in lens paper and stored in a storage box specifically designed for optical elements. Typically, these boxes are stored in environments with low humidity, high cleanliness, and controlled temperatures. Optical elements are easily scratched or contaminated, Optical Components and some optical coating elements are hygroscopic, so proper storage is important for protecting optical elements.

In general, it is necessary to check the optical elements before and after use and before and after cleaning. Because most contaminants and surface defects are smaller in size, we often need to use amplification devices when inspecting optical components. In addition to amplifying the equipment, Optical Components sometimes we need to use a relatively bright light to illuminate the optical surface, to enhance surface pollutants and defects of the specular reflection strength, so that more easily detect contaminants and defects.

When examining the reflective coating surface, the optical elements need to be raised to a height parallel to your line of sight. Optical elements should intersect with sight, not perpendicular to the optical surface, so that contaminants can be seen instead of reflected light. Polished surfaces, such as lenses, Optical Components need to be perpendicular to your line of sight, so that you can check the transparency of the entire optical element.

If there is a surface defect on a clean optical surface, a scratch standard plate can be used to classify the size of the defect, that is, to compare the size of the calibrated defect on the standard plate and the size of the surface defect of the optical element. If the size of the defect on the optical surface exceeds the manufacturer's scratch specification, the optical element needs to be replaced to achieve the desired performance effect.

If possible, be sure to read the manufacturer's recommended cleaning and operating procedures. Because the cleaning of optical elements all involves the operation of optical elements, so under the use of the following cleaning guide, please follow the appropriate operating procedures. If clean or improper operation, the optical element will cause permanent damage.

Before cleaning the optical elements, Optical Components check the optical elements to determine the type and severity of the contaminants. This inspection step cannot be skipped because the cleaning process of an optical element usually contains solvents and physical contact with the optical surface, which can cause damage to optical elements if handled too frequently.

The cleaning sequence of optical elements adhering to multiple contaminants is important so that the optical surface is not damaged by other contaminants when removing a contaminant. For example, if an optical element is contaminated with oil and dust at the same time, wiping the oil first will scratch the optical surface. This is because the dust also rubs along the surface during wiping.

Before doing any other cleaning technology, it is usually necessary to blow away dust and other loose contaminants first. This method requires the use of inert dust-removal gas canisters or blast balls. Do not blow directly to the surface of the optical element with your mouth, because it is likely to deposit saliva on the optical surface.

If you are using inert dust gas, Optical Components please use the gas tank in the whole process before and during use. Do not shake the air tank before or when used. And in the air before blowing the nozzle far to the optical elements. These steps help prevent the inert gas propellant from depositing on the optical surface. If you use a filling gas, keep the air tank away from the optical element about 6 inches and use a short blow way. Rotate the nozzle of the inert gas tank so that its nozzle and the surface of the optical element form a grazing angle blow. For large-sized optical elements, the surface of the optical surface is blown along the image pattern.

This cleaning method applies to almost all types of optical elements. However, for some optical elements, such as holographic gratings, carved gratings, unprotected metal mirrors, calcite polarizer, Optical Components and thin film splitter, can be damaged in physical contact, blowing is the only available cleaning method

Important Considerations

1, before cleaning must keep the optical components are cooled.

2, please be sure to follow the technical points at all times.

3, can not soak the double glued optical element

4. Be cautious when using detergent. Some may be poisonous or flammable, so read the label carefully before you do it. Proper operation and cleaning of your optical elements will increase their life expectancy.

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