Multi-spectral imaging windows provide high transmission, excellent wavefront quality, low scatter, and exceptional environmental durability. These windows can be customized from virtually any substrate material, including fused silica, Si, Ge, ZnSe, ZnS, CaF2, MgF2, Cleartran and AMTIR.
Excelitas has a world-renowned capability for optical fabrication and polishing an extensive range of materials and geometries to the industry’s highest level of performance and quality. Utilizing a range of processes including spindle polishing, CNC polishing, diamond turning and continuous polishing, Excelitas has the expertise to meet your most challenging imaging window needs.
Typical Optically Coated Component Performance:
Germanium
| Wavelength | Avg. T | Avg.R | Abs.T | Abs.R |
|---|---|---|---|---|
| 8.0-12.0 μm | ≥97% | ≤0.5% | ≥93% | ≤1% |
| 7.5-13.5 μm | ≥96% | ≤1% | ≥85% | ≤4% |
Silicon
| Wavelength | Avg. T | Avg. R | Abs. T | Abs. R |
|---|---|---|---|---|
| 3.0-5.0 μm | ≥98% | ≤0.5% | ≥94% | ≤1.5% |
ZnSe
| Wavelength | Avg. T | Avg. R | Abs. T | Abs. R |
|---|---|---|---|---|
| 8.0-12.0 μm | ≥98% | ≤0.5% | ≥96% | ≤1% |
| 7.5-13.5 μm | ≥97% | ≤0.5% | ≥93% | ≤1.5% |
| 2.0-13.0 μm | ≥93% | ≤2.5% | ≥83% | ≤5.0% |
| 7.5-14.0 μm | ≥92% | ≤2.5% | ≥80% | ≤6.0% Sizes up to 330mm |
Typical Environmental Tests
| Typical Environmental Tests | |
| Adhesion MIL-C-48497A para. 4.5.3.1 | Tape Test |
| Humidity MIL-C-48497A para. 4.5.3.2 | 24hrs. 49 deg. C 95-100% relative humidity |
| Abrasion MIL-C-48497A para. 4.5.3.3 | Moderate, 50 strokes with cheesecloth |
Yes, we retrofit legacy systems (e.g., GE Frame 5, Siemens V94.2) with modern digital controllers, typically completing hardware integration within 4-8 weeks. Software migration requires additional validation time.
We recommend annual performance testing under ISO 3977-2 standards. Critical applications (e.g., offshore platforms) may require semi-annual tests with emissions compliance checks.
All rad-hard devices (e.g., FPGA, ADC) are QML Class V certified under MIL-PRF-38535 and tested to MIL-STD-883 Method 1019 for SEU tolerance. Full qualification reports are available upon request.
Our ASICs and power management ICs operate across -55°C to +175°C ambient temperatures, with derating curves provided in military temperature range (MTR) datasheets.
Our PMA parts (e.g., actuators, sensors) hold FAA/EASA Form 1 certification and match OEM form/fit/function. Installation requires SB/MB documentation per FAA AC 23.1529.
All NAS/MS fasteners include full DNA traceability: melt source (AMS 2301), heat/lot numbers, and AS9100-compliant MTRs with ultrasonic test reports.
AOG orders ship within 4 hours for stocked items (FAA-PMA, EASA Part 21G). Non-stock critical parts trigger priority manufacturing with 72-hour max turnaround.
Gas Turbine
Aircraft parts
