Sythetic Convex Sapphire Glass Bridge Type 0.02mm Size Tolerance For Adult Wrist Watch

Basic Information
Place of Origin: Guangdong
Brand Name: Tianzhili
Minimum Order Quantity: 500
Delivery Time: 10 working days
Detail Information
Material: Synthetic Sapphire Shape: Bridge Type
Usage: Adult Wrist Watch And Smart Watch Glass Coating: Customized
Color: Transparent And Colorless Tolerance: Customized
High Light:

convex sapphire


convex crystal glass

Product Description

Wrist-watch and Smartwatch Sapphire Glass 




Product Description


Despite the fact that sapphires are blue in colour, a sapphire glass is highly transparent to wavelengths of light between 150 nanometres and 5500 nanometres. This range gives the material a very wide optical transmission band from ultraviolet to near-infrared.

It is worth mentioning that the human eye can only discern wavelengths between 380 nanometres and 750 nanometre. In other words, a sapphire glass passes the most basic requirement of an ideal screen: light should pass through it and an individual should clearly see through it.






Material:----------------------------------------------N-BK7, Fused Silica, N-SF10, Silicon, Ge,CaF2, etc.

Diameter Tolerance:----------------------------+0.0/-0.15mm

Focal Length Tolerance (mm):---------------+/-2%

Centration:-----------------------------------------<3 arc minutes

Clear Aperture:------------------------------------>85%

Surface Figure ----<1.5λ

IRR --------------------------------<λ/4

Surface Quality:-----------------------------------60/40

Protected Bevel:----------------------------------<0.25mmx45deg




Property Specification
Thickness Customized
Size tolerance 0.02mm
Edge Finish Ground and beveled
Clear Aperture >80% of central diameter
Hardness (Knoop) 1370 kg mm-2
Young's modulus 3.4 x 1011 N m-2
Thermal Limit 22 W m-1 K-1
Thermal expansion coefficient 8.4 x 10-6 K-1

Contact Details

Phone Number : +8617722965647

WhatsApp : +8618606222729