Substrate Glass: |
BK7 optical glass |
Outer Diameter: |
25.4, -0.1/+0mm |
Thickness: |
6.0, +/-0.1mm |
Hole Process: |
Central hole/through - 45-DEGREE-AXIS HOLE (+/-0.5 deg tolerance)
Diameter D=2.60 +/-0.05mm (minor-axis of P-Ag coated front surface)
Note: chip control <0.1mm |
Surface Quality: |
Double side fine polished; 40-20 scratch and dig |
Flatness: |
< Lamda/8 @ 633nm over clear aperture |
Chamfer: |
< 0.2mm x 45-deg |
Coating: |
Front Surface: Single-side Silver coating, protective SiO overcoat
Note: coating process after hole drilled and surfaces repolished Rear Surface: gpolished/uncoated |
Reflectivity: |
Ravg>97% from 450nm-2,000nm, Ravg>95% from 2,000nm - 20,000um
Ravg>96% from 400nm-700nm, Ravg>96% from 700nm-2,000nm)
Note: protective SiO overcoat protects from oxidation Silver coating highly reflects in visible and NIR range | |
Clear Aperture: |
> 90% of reflective surface |
Pictures:
Front/Back Surfaces: |
 |
Packaging: |
Vacuum packaged(sealed) each |
MOQ: |
MOQ 2pcs (minimum order quantity); Email us sales@optics.sg for pricing on volume order process. |