What is the tolerance and quality standard for your optical glass domes?

At Felix Glass, quality and precision are the cornerstones of every optical glass dome we produce. We adhere to strict manufacturing and inspection standards to ensure your domes meet or exceed your specifications.

**Dimensional Tolerances:**

We achieve extremely tight tolerances on all critical parameters:

- **Diameter Tolerance:** ±0.01 mm or better

- **Thickness Tolerance:** ±0.005 mm

- **Radius of Curvature Tolerance:** ±0.1% or better, depending on complexity

- **Centration Error:** Less than 1 arc minute, ensuring perfect alignment

- **Surface Irregularity:** λ/10 or better at 632.8 nm, for minimal wavefront distortion

These tight tolerances ensure that each dome is optically matched to your system, eliminating image aberration and ensuring consistent performance.

**Surface Quality & Finish:**

The surface quality of our domes is measured using the MIL-PRF-13830B scratch-dig standard. We routinely produce domes with:

- Surface quality up to **10/5** (scratch/dig) for high-precision applications

- Precision-polished surfaces with minimal roughness (Ra < 0.5 nm)

- Edge finishing options including fine grinding, chamfering, and polishing to eliminate stress points

This level of finish is critical for applications requiring high light transmission and low scatter.

**Quality Assurance & Certifications:**

All our manufacturing processes are conducted under an ISO 9001:2015 certified quality management system. Every optical glass dome undergoes a multi-point inspection before shipment, including:

1.  Visual and interferometric inspection for surface defects

2.  Dimensional verification using coordinate measuring machines (CMM)

3.  Optical testing for transmission, reflection, and wavefront error

4.  Coating performance verification

We provide full inspection reports and certification upon request, giving you complete confidence in the quality and reliability of our products.

At Felix Glass, we believe that true quality is built into every step of the process, from raw material selection to final testing.