The correct washing method can extend the life of the curtain:

Cotton, linen curtain : can be directly put into the washing machine to clean, in addition to the use of washing powder, it is best to add a little fabric softener, can make the curtain more smooth and smooth after washing. Remember: fabrics that tend to shrink should be dry cleaned as much as possible.

Roller blinds : Pull it down into a flat surface and wipe it with a cloth. The roller is usually hollow, and a thin stick can be used, and the end is attached with fluff to continuously rotate to remove dust.

Lace curtains: Curtains with lace trims are not suitable for cleaning. Before cleaning, gently sweep it with a soft brush to remove surface dust.

Flannel curtains : The dusting power of the flannel curtains is strong. After disassembly, the curtains are shaken by hand, so that the surface dust attached to the flannel is naturally dropped, and then soaked in water containing detergent for about 15 minutes. It is best not to use a washing machine to clean the flannel curtains. It is recommended to gently press the water filter by hand. Do not wring it out after washing, so that the water can be dripped automatically.

Blinds : When cleaning, first close the curtains, spray a proper amount of water or polishing agent on them, and wipe them with a rag to keep them clean and bright for a long time. As for the drawstring of the curtain, use a soft bristle brush to gently wipe. If the curtains are dirty, use a rag to wash them with warm water and wash them with a little ammonia solution. Because of the material and painting, the blinds are more likely to fade, so be careful not to expose them.

Roller blinds : Roller blinds are generally more difficult to disassemble, so they can only be cleaned directly on the roller blinds. When cleaning, pay special attention to the position where the dust around the roller blind is easy to absorb dust. If there is too much dust, use a soft brush to remove the dust, then wipe it with water. It is also possible to spray some polishing agent to keep the roller blind for a long time.

The curtain head and cockroach are soaked in water, then washed with warm water added with soda, then washed twice with mild detergent or soapy water. Gently rub when washing, and finally rinse with water. When you dry it, you need to arrange it and put it on a clean table or frame.

Finally, after cleaning the curtains, try not to dehydrate and dry. It should be air-dried to avoid damaging its texture. The curtains of special materials should be sent to the dry cleaner to prevent deformation.

Optical Coatings

• Single + Dual Wavelength AR Coatings (VAR / DAR):A single wavelength V-coat will provide reflectance less than 0.25% for 0° incidenceor 0.5% for 45° incidence at the chosen wavelength. Dual wavelength coatings will approach the performance of V-coats for two selected wavelengths. They are useful for optics which must transmit a visible alignment laser as well as a UV or near IR process beam. It is also useful for transmission of fundamental and first harmonic wavelengths.
• Broadband-AR-coatings:Anti-reflection coatings are offered to reduce surface reflections to a minimum. Two types of broadband coating are offered. A single layer of MgF2 on Fused Silica or BK7 reduces reflections per surface to about 1.5% over a broad bandwidth. If lower reflectance is required a multilayer broadband coating will provide an average reflectance less than 0.5% per surface.

• 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.

• Dielectric High Reflective Coatings:

1. Broadband HR coatings provide an average reflectance of 99% over a broad range of wavelengths. These broadband mirrors may be used for white light or multi-spectral applications.
2. Single wavelength, high power HR coatings are suitable for intra and extra cavity use. They provide the ultimate high reflectance of Rs > 99.8% and Rp > 99% for a specific wavelength. They may be used as a rear cavity reflector or for extra cavity use in beam delivery or turning. Note that Lambda high quality visible laser cavity coatings are designed for low scattering.

• Dichroic Beamsplitters – Beam Combiners – Harmonic Separators (SPD / LPD / BC / HHS)

1. Separate or combine beams with different wavelengths:Separate or combine beams with different wavelengths. These dichroic coatings allow one wavelength region to be transmitted while they reflect another region. They may be used as illustrated to separate or combine different wavelengths. This can be useful when working with alignment lasers or frequency doublers.
2. Dichoric Beamsplitters:These long-pass and short-pass coatings may be applied to any optical component to separate or combine different wavelength regions. They are available for normal and 45° angle of incidence. These coatings are highly effective for the wavelength of interest, reflecting over 99%. While they transmit over 85% of other nearby wavelengths, they are not blocked over a broad spectral range.

• 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.

• IBAR : IR Broadband AR Coatings : Coatings for 3-5 µm and 8 – 12 µm bands

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

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