Product type: Flat Lens. Application: Optical. Model: FW-sapphire.
Overview
Sapphire Optical Lens Customized Windows, Near-Infrared Coating Technology: an optical lens made from Optical Glass. Listed geometry: size Customized, thickness Customized, single-lens shape. Optical / electrical data: transmittance >95%. Coating: Single or Multi-layer films. It is used in Optical. 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 |
| Size | Customized |
| Thickness | Customized |
| Transmittance | >95% |
| Coating | Single or Multi-layer films |
| Usage | Optical |
| Model NO. | FW-sapphire |
| Lenses Color | Clear |
| Growth Method | Ky |
| Supplier | Jiaozuo Commercial Finewin Co., Ltd. |
Technical data
| Refractive index (nd) | 1.768 |
|---|---|
| Coefficient of dispersion (Vd) | 72.2 |
| Density (g/cm3) | 3.97 |
| TCE(μm/mºC) | 5.3 |
| Soften Temperature(ºC) | 2000 |
| Knoop hardness(kg/mm2) | 2200 |
| Diameter | 0.2-300mm +/-0.1mm or +/-0.02mm or customization |
|---|---|
| Thickness | 0.10-100mm± 0.1mm or +/-0.02mm |
| Surface quality (scratch & dig) | 60/40, 40/20 or better |
| Surface accuracy | λ/10, λ/2, λ |
| Clear Aperture | >85%, >90% |
| Parallelism | +/-3' ,+/-30'' |
| Bevel | 0.1~0.3mm×45 degree |
| coating | AR, BBAR or upon customer request( UV, VIS, IR) |
What to specify when you request a quote
- Material — listed as “Optical Glass”; name the glass or crystal.
- Geometry — listed as “Customized”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — quote surface figure (λ) and scratch-dig.
- Centring and edges — state centration and edge chamfer.
- Coating — listed as “Single or Multi-layer films”; list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see Infrared Window Glass: Material Options for Optical Sensors & Parts. How parts like this are machined and finished is covered in Optical Glass Polishing for High Clarity Surfaces. For an application example, read Infrared Window Glass for Smart Home Appliance Sensors. Before sending a drawing, check Fused Silica Refractive Index: Key to Optical Design Improvement. A related standard product is Infrared Windows.
