|Type:||Watches For Parts||Material:||Sapphire|
|Surface Treatment:||Polish||Shape:||Custom Shape|
scratch resistant watch face,
optical collimator lens
Scratch Resistant Smartwatch Sapphire Glass With Circle Shape / Square Shape
Sapphire Optical Components are used in a variety of applications requiring high durability or broad spectral ranges, including semiconductor, FTIR spectroscopy, or FLIR imaging.
Sapphire, which is the second hardest crystal, features a variety of attributes that are ideal for use in harsh environments, including extreme surface hardness, high thermal conductivity, high dielectric constant, as well as a strong resistance to a variety of chemical acids or alkalis. Compared to many standard optical materials, Sapphire Optical Components offer thinner designs, along with transmission ranges from 0.15 – 5.5μm for optimum performance in the ultraviolet to the MWIR.
Extremely hard surface
High scratch resistance and wear.
Extremely high melting point
High electrical resistance
Chemical properties of stability
High thermal conductivity for a non-conductor, even better than copper at cryogenic temperatures
Synthetic Sapphire Window Technique Index :
|Edge Finish||Ground and beveled|
|Surface Quality||40-20 scratch-dig|
|Surface Flatness||λ/4 @ 633 nm|
|Parallelism||≤3 arc min (≤0.9 mrad)|
|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|