Andover
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| Brand | Andover |
|---|---|
| Origin | USA |
| Model | 193–299 nm |
| Component Category | Optical Element |
| Diameter Tolerance | +0/−0.25 mm |
| Usable Aperture | ≥9.0 mm (12.5 mm dia), ≥21.0 mm (25 mm dia), ≥45.0 mm (50 mm dia) |
| Surface Quality | 80–50 (per MIL-PRF-13830B) |
| Optical Quality | Commercial instrumentation grade |
| Out-of-Band Blocking | Avg. OD ≥4 (1×10⁻⁴ transmission) from X-ray to FIR |
| Max. Survival Temp Range | −50°C to +50°C (CW/L 214–380 nm) |
| Humidity Resistance | Per MIL-C-48497A |
| Mechanical Mounting | Anodized aluminum ring |
| Brand | Andover |
|---|---|
| Origin | USA |
| Product Type | Colored Glass Optical Filters |
| Optical Thickness | 3.0 mm ± 0.5 mm |
| Mechanical Thickness (with ring mount) | +0.8 mm |
| Outer Diameter Tolerance | +0.00 / –0.25 mm |
| Surface Quality | 80–50 per MIL-M-13508 |
| Max Operating Temperature | +100 °C |
| Flatness | λ/4 per inch |
| Parallelism | ≤30 arc seconds |
| Spectral Data | Specified as internal transmittance |
| Corner Cropping | Applied to all 165 mm square parts unless otherwise specified |
| Brand | Andover |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Product Category | Imported Optical Component |
| Model | Dichroic Filters |
| Price Range | USD 140 – 420 (per piece, depending on size and spectral specification) |
| Component Type | Optical Element |
| Size Tolerance | +0.0 mm / −0.25 mm |
| Thickness | 1.0 mm ± 0.25 mm |
| Clear Aperture | ≥95% of outer diameter |
| Substrate Material | Soda-lime glass |
| Flatness | 3–5 waves per 25 mm |
| Parallelism | ≤3 arc minutes |
| Surface Quality | 80/50 per MIL-O-13830B |
| Coating Quality | 40/20 per MIL-O-13830B |
| Environmental Durability | Compliant with MIL-C-675A (humidity & abrasion) |
| Max Operating Temperature | +100 °C |
| Mounting | Unmounted (bare substrate with thin-film coating) |
| Brand | Andover |
|---|---|
| Origin | USA |
| Filter Type | Edge Filter (High-Pass / Low-Pass) |
| Construction | Multi-layer dielectric thin-film coating on optical substrate |
| Design Principle | Quarter-wave interference stack |
| Mounting Option | Available unmounted or mounted in threaded rings (standard metric and imperial threads per Andover catalog p.60) |
| Compliance | Designed for laboratory-grade optical systems requiring high transmission, steep edge transition, and environmental stability |
| Cleaning Compatibility | Compatible with standard optical cleaning protocols (e.g., lint-free wipes, spectroscopic-grade solvents) |