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Address:
Changchun Worldhawk
Optoelectronics Co.,Ltd
No.189,Chang-Ji Nan Road.
Changchun,China 130022

Tel:+86 431 89825768
Email:
Sales@worldhawk.com
Website:www.worldhawk.com

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No.189,Chang-Ji Nan Road.Changchun,China 130022  Powered by 300.cn  Ji ICP No.10005497

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Fused Sillca and Sapphire Ball

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You are here: BK7 optical glass sapphire ball Lens half ball lenses 

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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.

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Worldhawk ball lens and half ball lens

 

 

Parameters Explaination:

 

 

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   Germanium   4.003   N/A
  H-K9L(N-BK7)   1.517   64.20      

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Material Characteristics

 

Fused Silica Ball and Half-Ball Lenses:
1,Excellent UV Transmission

   (From 200nm to 2.2μm)
2,Low Coefficient of Thermal Expansion

Sapphire and Ruby Ball Lens(Half ball lens):
1,Excellent for Severe Environments
2,High Strength and Hardness
3,High Chemical Stability
4,Ruby Balls are easier to see

H-K9L (N-BK7) Ball Lenses:
1,Can be Used as Fiber Coupling Spheres or      Collimating Lenses
2,Ideal Pre-Forms for Aspheric Lenses
3,Available in a Variety of Sizes

High Index Ball Lenses:
1,Index of Refraction of 1.8-2.0
2,High Tolerance
3,High Index for a Closer Focal Distance

 

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