Capabilities · 02
Custom Manufacturing
Grinding, polishing, and diamond turning — with a published tolerance envelope instead of vague promises.
Capability 02
Fabrication Envelope
Conventional grind-and-polish for spheres and flats; single-point diamond turning for aspheres, diffractives, and IR crystals. These are the numbers we quote against.
| Attribute | Standard | Precision | Best Effort |
|---|---|---|---|
| Diameter range | 3 mm (0.118") – 300 mm (11.8") | ||
| Diameter tolerance | ±0.10 mm | ±0.025 mm | ±0.010 mm |
| Center thickness | ±0.15 mm | ±0.050 mm | ±0.025 mm |
| Surface irregularity (PV @ 633 nm) | λ/2 | λ/4 | λ/10 |
| Surface quality (scratch-dig) | 60-40 | 40-20 | 10-5 |
| Centration (edge wedge) | 3 arcmin | 1 arcmin | 15 arcsec |
| Radius match (test plate / interferometer) | ±0.2% | ±0.05% | ±0.025% |
| Aspheric form error (SPDT) | ±1 µm | ±0.25 µm | ±0.1 µm |
Values are quoting guidelines at 293 K for typical geometries; extreme aspect ratios, soft crystals (ZnSe, CaF₂), and steep surfaces shift the envelope — ask and we'll tell you honestly.
Process
Two Roads to a Finished Surface
| Conventional Grind & Polish | |
|---|---|
| Geometries | Spheres, flats, windows, prisms |
| Materials | All — glasses, fused silica, sapphire, IR crystals |
| Strength | Best surface quality and irregularity; scales to volume with tooling run at full capacity per batch |
| Finish | To 10-5 S/D, λ/10 irregularity |
Batch discipline: every production run loads maximum tooling capacity — no partial loads. That is how unit cost stays flat from prototype 5 to lot 500.
| Single-Point Diamond Turning (SPDT) | |
|---|---|
| Geometries | Aspheres, off-axis, diffractives, toroids |
| Materials | Ge, ZnSe, ZnS, Si, GaAs, chalcogenide, CaF₂, metals (Cu, Al) |
| Strength | Complex IR surfaces without sub-aperture polishing; fast design iteration |
| Finish | Form ±0.1 µm best effort; surface roughness < 5 nm Ra typical on Ge |
When we recommend SPDT: any LWIR asphere, any diffractive hybrid, and any prototype where you want the first article in two weeks instead of six. Diamond-turned Ge often ships with no post-polish at all.
Send the Print. We'll Tell You Which Column It Lands In.
Every RFQ gets a line-by-line specification review against this envelope — free, and usually same-week.
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