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Double Side Polishing Flat Watch Glass With Anti - Reflective Coatings

Categories Flat Watch Glass
Brand Name: tianzhili
Place of Origin: Guangdong, China (Mainland)
Price: Calculate prices by size and technology
Packaging Details: Conventional packaging plastic packaging box foam cotton carton
Product name: Sapphire glass
Material: Artificial sapphire
use: Watch lens
hardness: H9/HV1800-2200
custom made: Can be customized
Coating: Anti-Reflective (AR) Coatings
Color: Clear Transparent
shape: Circular plane
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    Double Side Polishing Flat Watch Glass With Anti - Reflective Coatings


    Double Side Polishing Flat Watch Glass With Anti - Reflective Coatings



    Product Description:


    Name
    factory manufacture watch sapphire glass
    Size(mm)
    D18*1.2mm or customize
    Material
    Sapphire glass,quartz glass,BK7,B270,borosilicate glass,D263T
    Size tolerance
    +/-0.05mm
    Edge Finish
    Ground and beveled
    Surface Quality
    60-40 scratch-dig
    Surface Flatness
    λ/4 @ 633 nm
    Parallelism
    ≤3 arc min (≤0.9 mrad)
    Transmistance
    >90%

    Please try to offer more details as below when you place an order:

    1. Buyer offers an original sample or related mounting parts and special request for attention or change.

    2. If you are unable to provide samples, please provide drawings or try to provide more details.


    We can provide flat/single domed/double domed and other shape watch glass,Welcome to email us.


    About sapphire glass
    SAPPHIRE CRYSTAL (sapphire glass) generally refers to synthetic sapphire, generally used in the manufacture of the watch glass.
    It is resistant to wear with tungsten titanium alloys and high-tech ceramics. but sapphire materials can wear resistance and
    withstand the strong impact, and some of the same or higher hardness of the material (e.g., millstone, sandpaper, nail, granite,
    concrete wall, and floor, etc.) so sapphire glass are not likely to scratch the surface of these materials.


    Synthetic Sapphire Window Technique Index :


    PropertySpecification
    Thickness0.5-50mm
    Size tolerance0.02mm
    Edge FinishGround and beveled
    Surface Quality40-20 scratch-dig
    Surface Flatnessλ/4 @ 633 nm
    Parallelism≤3 arc min (≤0.9 mrad)
    Clear Aperture>80% of central diameter
    Hardness (Knoop)1370 kg mm-2
    Young's modulus3.4 x 1011 N m-2
    Thermal Limit22 W m-1 K-1
    Thermal expansion coefficient8.4 x 10-6 K-1

    Product Display:



    Quality Double Side Polishing Flat Watch Glass With Anti - Reflective Coatings for sale
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