*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[...]

Ruled area: <=70 * 70mm Wavelength range: 0.2-0.8um Grooves per mm: 1,200 to 3,600L/mm Diffraction: >70% Ruled gratings: Specifications: Ruled area: <=70 * 70mm Wavelength range: 0.2-15um Grooves per mm: 50 to 2,400L/mm Diffraction: >70% Concave gratings: Specifications: Ruled area: <=70 * 70mm Wavelength range: 200 to 900um Grooves per mm: 490 to 1,200L/mm Diffraction: >70%[...]

specification: material:Znse, Caf2,Silica lens, size:10~200mm 1、transmission range：190nm-9um。 2、applications：IR imaging and detecting。 3、diameter：1mm-300mm thickness：0.5mm-200mm 4、surface quality：10/5（scratch and dig） 5、surface accuracy: 1/8N 6、level ≤3 second[...]