Optical Flat Lenses / Covers
NAPHIA

Sapphire Wafers Sapphire Wafers

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 small difference in height have advantages such as the ability to bond to different materials while maintaining flatness, and a more evenly transmission of light. Sapphire, as a transparent material, allows for clear visibility of the bonded surface, and can be used for visualization experiments. Additionally, sapphire in particular has unique features that can be leveraged, such as its 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
Item Specification
Diameter □1mm~ □25mm □50mm □75mm □100mm □125mm φ150mm
Material Artificial sapphire( Al2O3 99.99%以上)
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

Sapphire provides even light transmittance across a wide range of wavelengths, and is widely used in harsh environments, such as for ultraviolet and infrared transmission windows and sensor covers. (We will respond to requests for lenses/covers according to customer’ s required size and specifications such as λ to λ/20.)
In addition, sapphire is widely used for the exterior and crystal of watches, and in recent years, has been increasingly adopted in exterior parts for smartphones, smart watches, and new product designs.

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