CVD ZnSe Material Processing
Chemical Vapor Deposition (CVD) ZnSe is a primary material for infrared optical components operating in the 0.6 µm to 20 µm wavelength range. The material is processed into blanks, windows, lenses, prisms, and custom-shaped parts according to buyer drawings and specifications.
Processing capability includes standard catalog items and custom parts by drawing. Dimensional tolerances, surface quality, coating requirements, and special features are reviewed before order confirmation to confirm feasibility against workshop capability.
Product Types from CVD ZnSe
IR Windows
Plano, wedged, stepped, drilled, and custom-shaped windows for thermal imaging and laser systems.
IR Lenses
Plano-convex, plano-concave, meniscus, aspheric, and cylindrical lenses.
IR Prisms
Right-angle, equilateral, roof, and ATR prisms for beam manipulation.
Custom Parts
Drawing-based custom geometries including non-standard shapes and multi-feature parts.
Drawing Review Process
When orders include custom drawings, a drawing review is conducted before production begins. The review confirms that specified tolerances, geometries, materials, and features are achievable with current equipment and process capability. If drawing specifications exceed achievable ranges, this is communicated with suggested alternatives.
Review Checklist
- Dimensional tolerances and achievable accuracy range.
- Surface quality and flatness requirements.
- Coating requirements and wavelength range.
- Material grade and transmission requirements.
- Edge treatment, chamfer, and special features.
- Inspection requirements and documentation needs.
Typical Processing Parameters
Processing parameters vary by product type, size, and specification level. The following ranges represent typical achievable values for standard production. Custom tolerances outside these ranges are reviewed case by case.
| Parameter | Typical Range | Notes |
|---|---|---|
| Diameter | 5 mm – 300 mm | Larger sizes reviewed case by case |
| Thickness Tolerance | ±0.05 mm – ±0.2 mm | Tighter on request |
| Surface Quality | 40-20, 60-40, 80-50 | Per MIL-PRF-13830B |
| Surface Flatness | λ/4, λ/10 @ 632.8 nm | Higher precision on request |
Note on Specifications
Parameters shown are representative of standard production capability. Actual achievable values depend on part geometry, size, material grade, and current equipment status. All specifications are confirmed during the drawing review and order confirmation process.
