Optical Quality
Reynard has a Quality Assurance (QA) systematic process in place to ensure products meet specified requirements. We are committed to ensuring the most up to date testing and inspection methods are being used to establish confidence that quality requirements will be met.
Quality Inspection
Reynard uses the default quality inspection terminology:
Standard Tolerances
A standard tolerance chart for optics is crucial because it defines acceptable limits for various parameters (like surface quality, flatness, centration, etc.) that directly impact the performance, manufacturability, and cost of an optical system. By following a standardized tolerance chart, optical engineers can ensure that optics are both cost-effective and capable of meeting performance requirements, which is especially important for complex systems with multiple lenses or mirrors.
Flat Bk-7, Fused Silica and Silica Materials
| Flat Optics Specifications | Commercial Quality | Precision Quality | Laser Grade Quality | Measurement Limit |
| Surface Figure Accuracy, PTV @ 633nm | 3 waves/25mm | 1 wave | λ/4 | λ/20 |
| Surface Roughness, Angstroms RMS | – | <5 | <3 | <2 |
| Cosmetic QUALITY, Scratch-Dig | – | 40-20 | 20-10 | 5-1 |
| Center Thickness Tolerance (mm) | ±0.2 | ±0.1 | ±0.025 | ±0.005mm |
| Parallelism | – | 3' | 30" | <2" |
| Diameter Accuracy (mm) | ±0.2 | ±0.1 | ±0.025 | +0.0/-0.025 |
| Transmitted Wavefront | – | 1 wave | λ/4 | λ/20 |
Flat IR Materials
| Flat Optics Specifications | Commercial Quality | Precision Quality | Laser Grade Quality | Measurement Limit |
| Surface Figure Accuracy, PTV @ 633nm | 3 waves/25mm | 1 wave | λ/2 | λ/10 |
| Surface Roughness, Angstroms RMS | – | <7 | <5 | <3 |
| Cosmetic QUALITY, Scratch-Dig | – | 60-40 | 40-20 | 20-10 |
| Center Thickness Tolerance (mm) | ±0.25 | ±0.15 | ±0.1 | +0.0/-.1 |
| Parallelism | – | 3' | 30" | 5" |
| Diameter Accuracy (mm) | ±0.25 | ±0.15 | ±0.1 | +0.0/-.1 |
| Transmitted Wavefront/Power Cancellation, PTV@633nm | – | 2 waves | 1 wave | λ/5 |
Diamond Point Turning
| Flat Optics Specifications | Commercial Quality | Precision Quality | Laser Grade Quality | Measurement Limit |
| Surface Figure Accuracy, PTV @ 633nm | 3 waves/25mm | 1 Wave | λ/2 | λ/5 |
| Surface Roughness, Angstroms RMS | <120 | <100 | <80 | <20 |
| Cosmetic QUALITY, Scratch-Dig | 100/80 | 80/50 | 50/30 | 40/20 |
| Center Thickness Tolerance (mm) | ±0.075 | ±0.030 | ±0.010 | ±0.005 |
| Parallelism | <.020 | <.010 | <.005 | <.003 |
| Diameter Accuracy (mm) | ±0.050 | ±0.025 | ±0.010 | ±0.003 |