Cemented Prism Assembly - Right Angle / Penta / Roof / Cube
Specifications
Assembly Type: Cemented Prism / Glued Prism Assembly (2-element, 3-element, or multi-element)
Common Configurations: Porro prism pair, cube beamsplitter, cemented penta prism, right-angle prism pair, custom polygon block
Individual Prism Geometry: Right Angle (45-45-90), Penta, Roof, Equilateral, Custom polygon
Substrate Materials: N-BK7 (std), H-K9L, UV Fused Silica, SF series, CaF₂, ZnSe (IR on request)
Overall Dimensions: 2 mm – 100 mm (custom per drawing)
Dimensional Tolerance: +/- 0.05 mm (std); +/- 0.02 mm (high precision)
Angular Alignment (between elements): +/- 2 arcmin (std); +/- 30 arcsec (tight)
Surface Quality (external faces): 20-10 / 40-20 Scratch-Dig (MIL-PRF-13830B)
Surface Flatness (bonding faces): Lambda/4 @ 632.8 nm (Lambda/10 optional)
Adhesive: UV-curing optical epoxy – low shrinkage, high transmission 350–2000 nm, operating temp –20°C to +80°C (high-temp epoxy up to +150°C available)
Bond Line Thickness: < 0.01 mm (controlled per process)
Coating Options (external faces): Uncoated / MgF₂ / BBAR 400-700 nm / 650-1050 nm / Protected Al or Ag / Dielectric HR
