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  • Name: Big Ball Lens
  • date: 2017-09-26
  • MOQ: 0
  • Views : 78
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You are here: (Polished Optical Quartz Glass Hemisphere

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Ball lenses are commonly used for laser collimating and focusing, laser-to-fiber coupling, fiber-to-fiber coupling, Solar-photovoltaic and fiber-to-detector coupling.  

Worldhawk can provide spherical ball lenses and half ball lenses in a range of substrates for performance in the ultraviolet to the NIR. Such as including H-K9L(N-BK7), Sapphire, CaF2, BaF2, ZnSe or custom materials upon request.

Ball lenses feature short back focal lengths to minimize the distance needed from the ball Lens to the optical fiber. Ball lenses are commonly used to improve signal quality in fiber coupling applications, or for use in endoscopy or bar code scanning applications.

Half-Ball (hemispherical) lenses are ideal for applications such as fiber communication,endoscopy, microscopy, optical pick-up devices,and laser measurement systems.

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Worldhawk ball lens and half ball lens

WORLDHAWK Optical Glass Ball lens Sapphire Ball lens  Optical ZnSe Ball lens Optical Si Ge Ball lens.jpg

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Parameters Explaination:

worldhawk ball lens and half ball lens drawing.jpg

EFL: Effective Focal Length    BFL: Back Focal Length
CT  : Center Thinkness           C    : Lens Center

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Specifications of ball lens (Half ball lens) 

  Item    Parameter (Optical glass ball lens; Half ball lens)
  Material

  K9 (BK7), Optical sapphire(ruby) glass, Fused Silica, JGS1,

  ZnSe,  Zns, Ge, Caf2, B270, LaF52, Schott glass

  Diameter   1~150mm, 1mm, 2mm, 3mm…
  Dia. Tolerance   +/-0.002mm
  Roundness   0.003-0.005
  Surface Accuracy   <2λ
  Irregularity   λ/2 @632.8nm
  Surface Quality   <40/20 scratch/dig
  Clear Aperture   >92%
  Focal length tolerance   +/-1% (+/-5% for 400 series)
  Centration   3 arc min or better
  Coating   Upon customer request

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Material specification

 Glass  Materials

Refractive

 (nd

 Dispersion  Coefficient(vd)

 Glass  Materials

Refractive

 (nd

 Dispersion  Coefficient(vd)
  H-Zlaf90   2.00069   25.43   Sapphire   1.768   72.20
  H-Zlaf50D   1.804   46.58   ZnSe   2.403   N/A
  H-ZF7LA   1.80518   25.46   Silicon   3.422   N/A
  Fused Silica   1.458   67.70