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    CUSTOM OPTICS
     
     
     
     
       
       
       

    Equi-Concave Lenses
    Product Information :

    The equi-concave lens has a focal length, diverges collimated incident light, and forms only virtual images that are seen through the lens. It is often used to expand light beams or to increase focal length in existing systems, and is normally used in combination with other lenses.

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    Specifications

    Material

    Sapphire, Silicon, Gemanium

    Radius

    R≥3.0

    Surface Finish

    N<3,△N≥λ/4

    Centration

    ≥1’

    Diameter

    ≥3.0 ±0.01mm

    T/D

    1/10

    Surface Quality

    20/10

    Bevel

    0.25mm at 45 deg

    Coating

    Single or Multi-layer films

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    Specifications

    Material

    Fused Silica, Quartz & optical Glass

    Radius

    R≥1.5

    Surface Finish

    N<2,△N≥λ/8

    Centration

    ≥1’

    Diameter

    ≥3.0 ±0.01mm

    T/D

    1/10

    Surface Quality

    20/10

    Bevel

    0.25mm at 45 deg

    Coating

    Single or Multi-layer films

     
     
     
     
     
     
     
     
     
     
     


       
       
     
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