In March 2011, Japanese aluminum alloys consumed a total of 3,709 tons of metallic silicon. It fell by 2.2% from the previous month. The aluminum alloy industry purchased a total of 4,146 tons of metal silicon in March, which was 3.6% lower than February's 4,300 tons, but it remained at around 4,000 tons.
In March, Japan’s aluminum production was 65,320 tons, a decrease of 4.2% from the previous month.
A double-convex lens is compose of two convex surfaces, has a positive focal length. Normally Bi-Convex lenses are most suitable where the object and image are on opposite sides of the lens, and are popular for many imaging applications.
Some styles of cylindrical lenses have antireflective coatings to increase the transmission of light through the lens. Fused silica cylinder lenses are ideal for demanding laser machining and medical applications.
We supply kinds of plano-convex Cylindrical Lens,plano-concave cylindrical lens,bi-convex cylindrical lens,bi-concave cylindrical lens,meniscus cylindrical lens,Rod cylindrical lenses,special cylindrical lens etc.Every sizes,materials cylindrical lenses are available according to your detailed parameters.
Double Convex Lens
Specification of our cylinderical lens as follow:
*Material: BK7,Ge,UV-grade fuse silica(JGS1,JGS2,JGS3)or other optical materials
*Dimension Tolerance: +0.0 -- -0.1mm
*Center Thickness: +/-0.1mm
*Focal Length Tolerance: +/-1%
*Surface Quality:20/10
*Surface Figure: lambda/2 at 633nm on plano side
*Clear Aperture>90%
*Chamfer: 0.25mm at 45 degree typical
*Coating Optional
Double Convex Lens,Double-Concave Cylinder Lens,Bi Concave Cylindrical Lens,Optical Glass Double-Convex Cylinder Lens
China Star Optics Technology Co.,Ltd. , https://www.realpoooptics.com