Product type: Flat Lens. Application: Optical. Model: FW-sapphire.
Overview
Sapphire Crystal Lenses Windows Wafers Substrate Ingot Block is a sapphire / specialty wafer made from Optical Glass. Listed geometry: size Customized, thickness Customized, single-lens shape. Optical / electrical data: transmittance >95%. Coating: UV. 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 | UV |
| 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
- Diameter and flat / notch — listed as “Customized”; state diameter, flat or notch and their tolerances.
- Thickness and TTV — listed as “Customized”; 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 Silica Windows for UV and Laser Optical Systems. How parts like this are machined and finished is covered in Glass Wafer Bonding for Microfluidic and MEMS Applications: Process Overview. For an application example, read Bulk Ordering Glass Windows for Robotic Vacuum Optical Sensors. Before sending a drawing, check Specifying Coatings for Custom Glass Windows and Substrates. A related standard product is Infrared Windows.
