Product type: Flat Lens. Application: Lighting, Medical, Optical, Photography, Astronomy.
Overview
1" Diameter AR-Coated Optical Germanium(Ge) Crystal Wafers is a sapphire / specialty wafer made from Optical Glass. Listed geometry: diameter 25.4+0.0/-0.2mm, thickness 1.0+/-0.1mm, single-lens shape. Optical / electrical data: transmittance 90%-95%. Coating: HMC. Listed for Lighting, Medical, Optical, Photography and Astronomy applications. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Optical Glass |
|---|---|
| Type | Flat Lens |
| Shape | Single-lens |
| Diameter | 25.4+0.0/-0.2mm |
| Thickness | 1.0+/-0.1mm |
| Transmittance | 90%-95% |
| Coating | HMC |
| Parallelism | <0.05mm |
| Clear Aperture | >90% |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Lenses Color | Clear |
| ROC1 | Infinity |
| ROC2 | Infinity |
| Chamfer | Protected |
| Standard | MIL-PRF-13830B |
| CPG is also an ISO | 9001&14001 certified manufacture, we deliver fast and provide best cost performance ratio for our customers. |
| Package detail | Optics are packed with Capacitor paper, white paper, custom-made plastic containers etc |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Germanium Window | Material: | Germanium,monocrystal |
| Diameter: | 25.4+0.0/-0.2mm | |
| Thickness: | 1.0+/-0.1mm | |
| ROC1: | Infinity | |
| ROC2: | Infinity | |
| Surface quality: | S1&S2:5/5×0.16;L5x0.025 | |
| Parallelism: | <0.05mm | |
| Clear Aperture: | >90% | |
| Chamfer: | Protected | |
| Standard: | MIL-PRF-13830B |
What to specify when you request a quote
- Diameter and flat / notch — listed as “25.4+0.0/-0.2mm”; state diameter, flat or notch and their tolerances.
- Thickness and TTV — listed as “1.0+/-0.1mm”; give thickness, its tolerance and total thickness variation.
- Polish and roughness — specify single- or double-side polish and roughness.
- Flatness, bow and warp — quote flatness, bow and warp limits.
- Material grade — listed as “Optical Glass”; name the grade (JGS1/JGS2, Borofloat 33, alkali-free, sapphire orientation).
Engineering guides for this part
For material grades and coating options, see Fused Quartz Wafer Substrate Selection: Materials & Coatings for Semiconductor and Optical Systems. How parts like this are machined and finished is covered in Precision Glass Hole Drilling & Micromachining for MEMS Wafers. For an application example, read AR Coated Glass for Appliance Touch Screens: Specs and Selection. A related standard product is AR-Coated High-Transparency Optical Glass.
