The functions of modern coatings are becoming more and more comprehensive. From waterproof, fireproof, moisture-proof, mildew-proof, insect-proof, corrosion-proof and carbon-proof, they become home-guards. Faced with different brands and different prices, consumers can choose according to their own needs and affordability. There are a wide variety of paints on the market, with mixed results. Consumers are required to go through various inspections and learn some methods of choice. First, buy professional and supporting products. Brand Store: Dulux (Western Chemicals) According to different textures, colors, structures, and objects of use, the design and process of the coatings are also different. This requires the product manufacturers to provide technical guidance and after-sales services to consumers. Second, before the purchase of paint to see whether the product has a trademark and product specifications. The paint of the regular manufacturer shall have important mark data such as trademark, manufacturer name, production date and weight on the packaging drum. Third, it depends on whether the product has passed the government-approved testing department's safety testing. The paint used for decoration in home decoration has various effects on eye irritation, skin damage, skin allergy, liver damage and other side effects. Links: The difference between wallpaper, paint and latex paint Paint Coatings Purchase Coatings Home Decorations Home Paint Latex Paint Home Wallpapers Decoration Home
Spherical lenses often used for aiming and focusing of monochromatic light source.Plano-Concave Lenses have a negative focal length and is typically used to cause a collimated beam to diverge as in a Galilean type beam expander or Telescope. Because the spherical aberration of thePlano-Concave is negative, it can be used to balance the aberration of other lenses. This lens is widely use in optical display systems, projection optics systems, imaging and laser measureemnt systerms.
We supply kinds of Plano-Convex Spherical Lens,plano-concave Spherical Lens,bi-convex spherical lens,bi-concave spherical lens,Meniscus Spherical Lens,special spherical lens,achromatic spherical lens,ball lens,sphere lens etc.
Specification of our spherical lens as follow: Plano-Concave Spherical Lens,Optical Plano-Concave Lens,Double-Concave Lens Kit,Simple Double-Concave Lens Kit China Star Optics Technology Co.,Ltd. , https://www.realpoooptics.com
Regular manufacturers can provide colorful model color cards for consumers to choose.
Therefore, the products of the regular manufacturers must also pay attention to the environmental performance of the products. The powerful manufacturers will have strict requirements on the environmental performance of the products. Consumers can purchase with reference to the certifications of the relevant authority departments such as the Technical Supervision Bureau and the China Environmental Labeling Certification Committee. .
*Material: BK7,fused silica,MgF2,BaF2,CaF2,ZnSe,ZnS,Ge or other optical crystals
*Dimension Tolerance +0.0 -- -0.1mm
*Center Thickness +/-0.1mm
*Focal Length Tolerance+/-1%
*Surface Quality:60/40
*Surface Figure: lambda/2 at 633nm on plano side
*Clear Aperture >90%
*Chamfer 0.25mm at 45 degree typical
*Coating Optional