Sapphire optical flat lenses / covers are optical windows and lenses that are ultra-precision processed in shape and flatness (indicated by λ) for small diameters such as φ1mm to φ3mm, and large diameters such as 300mm.
Both circular and square shapes are available. If the thickness is 3mm or more, we can provide a higher degree of flatness. Transparent materials with a minimal difference in thickness have such advantages as the ability to bond to different materials while maintaining flatness, and more uniform transmission of light. Sapphire, as a transparent material, allows for clear visibility of the bonded surface, and offers high temperature resistance, excellent thermal conductivity, scratch resistance, and high durability.
| Item | Specification | ||||||
|---|---|---|---|---|---|---|---|
| Diameter | φ1mm∼ | φ50mm | φ75mm | φ100mm | φ125mm | φ175mm | φ200mm |
| Material | Artificial sapphire（ Al2O3 ≧ 99.99%） | ||||||
| Thickness | 0.5mm∼ | 1, 5, 10mm | |||||
| Orientation | c-plane (0001) | ||||||
| Front side finishing | Polish (Ra＜0.3nm) | ||||||
| Back side finishing | Polish (Ra＜0.3nm) | ||||||
| Remarks | Customizable specifications: diameter, thickness, orientation, etc. Other options: re-polishing |
||||||
| Items | Specification | ||||||
|---|---|---|---|---|---|---|---|
| Diameter | □1mm∼ | □25mm | □50mm | □75mm | □100mm | □125mm | □150mm |
| Material | Artificial sapphire（ Al2O3 ≧ 99.99%） | ||||||
| Thickness | 0.5mm∼ | 1, 5, 10mm | |||||
| Orientation | c-plane (0001) | ||||||
| Front side finishing | Polish (Ra＜0.3nm) | ||||||
| Back side finishing | Polish (Ra＜0.3nm) | ||||||
| Remarks | Customizable specifications: diameter, thickness, orientation, etc. Other options: re-polishing |
||||||
As sapphire provides uniform light transmittance across a wide range of wavelengths, and can be used in harsh environments, it is suitable for ultraviolet and infrared transmission windows and sensor covers. (We can customize lenses/covers according to customers’ size requirements and other specifications, such as λ to λ/20.)
Sapphire is also used for high-end watch crystals. Moreover, in recent years, it has been increasingly adopted for exterior parts for smartphones and smartwatches, with new product designs often incorporating sapphire.
