CPG manufactures high precision windows for demanding applications in the infrared. These windows are fabricated from a variety of materials including fused silica, Si, Ge, ZnSe, ZnS, CaF2, MgF2, Cleartran and AMTIR. Utilizing advanced fabrication and coating techniques, CPG delivers windows with tightly controlled transmitted wavefront, a high degree parallelism, minimal scatter, high laser damage resistance and outstanding durability for the most challenging environments.
Specifications
| Items | Description | |
| Sapphire Window | Material: | CaF2 |
| Diameter: | 12.7+0.0/-0.2mm | |
| Thickness: | 3.0+/-0.1mm | |
| ROC1: | Infinity | |
| ROC2: | Infinity | |
| Flatness: | S1&S2:PV<1/[email protected] | |
| Surface quality: | S1&S2:S-D 20-10 | |
| Parallelism: | <0.05mm | |
| Clear Aperture: | >90% | |
| Chamfer: | Protected | |
| Coating: | Uncoated | |
| Standard: | MIL-PRF-13830B | |
Interferograms with Zygo
Inspection
Other Windows CPG handle

Why CPG
COST, PRECISION, G+ SERVICE
CPG optics has over 20 years experiences in optics industry, we provide a variety of different material fabricating and coatings, and we always aim to be a trustful supplier for all the customers.
Our in-house optical metrology capability ensures the all the requirements for the parts are within the specs:
- Zygo Interferometer
- Wyko Cylinder Interferometer
- Agilent Cary 7000 Spectrometer
- Optical Bench
- Moller-wedel Goniometer
- Taylor Hobson Profiler
- Mitutoyo Projector
- Zygo Roughness Meter
- CMM
- Stress Measuring
- Satisloh Spherometer
- Trioptics Centering
Certificates

Packaging& Shipping
Package detail:
Optics are packed with Capacitor paper, white paper, custom-made plastic containers etc
Customized safety green carton
Shipping term:





















