April 20 Wuhan Steel Market Cold Rolled Sheet Price

Name of product specification Materials Origin price Change Note
Cold rolled plate 0.5*1000*2000mm Q195/ST12 Wu Gang 5550 - Less goods / fine packaging
Cold rolled plate 1.0*1000*2000mm Q195/ST12 Wu Gang 4950 - Fine packaging
Cold rolled plate 1.5*1250*2500mm Q195/ST12 Wu Gang 4920 - Fine packaging
Cold rolled plate 3.0*1250*2500mm Q195/ST12 Wu Gang 4950 - Fine packaging
Cold rolled coil 1.0mm*1250*C Q195/ST12 Wu Gang 4920 - Fine packaging
Cold rolled coil 1.0mm*1250*C Q195/ST12 Chain Steel 4780 -
Note: The above prices are all weighing



Achromatic Lens

Achromat doublet lenses have significantly better optical performance than singlet lenses in visible imaging and laser beam manipulation applications.It consists of a positive low-index Crown Glass lens element cemented to a negative high-index Flint Glass lens element. The elements are chosen so as to cancel chromatic aberration at two well-separated wavelengths, usually in the blue and red region of the spectrum. Focal length is constant at those two wavelengths and focal length shifts are virtually eliminated across the visible wavelengths. One frequent use is to achieve diffraction limited focusing of a laser beam. Negative Achromat is typically used when there is a need to eliminate chromatic aberration. In addition to reducing chromatic aberration at the design wavelengths, spherical aberration and coma are greatly reduced. We always make our achromats as precise specifications and tolerances for uncompromising image quality upon customer's requirement.

positive achromatic lensTriplet achromatic lens


Doublet Achromatic Lens Triplet Achromatic Lens

Specification of our achromatic lens as follow:
*Material:BK7,ZF2,ZF7(or according to your request)
*Dia.:+0/-0.05
*Center thickness tolerance:+/-0.1
*Surface quality: 60-40 Scrath/Dig
*Surface figure:0.5-0.2
*Centration < 3arc min
*Chamfer:0.1-0.25*45 degrees
*Design wavelength:486.1mm,587.6mm,656.3mm and upon request.

Achromatic Doublet Lens,Negative Optical Achromats Lens,Optical Achromatic Lens,Big Dimension Achromatic Lens

China Star Optics Technology Co.,Ltd. , https://www.csoptlens.com