High Performance Uncoated N-BK7 Ball Lenses Used In Fiber Optic Applications

Basic Information
Place of Origin: Wuhan,China
Brand Name: Wuhan Siwer Optics
Model Number: Ball lens
Minimum Order Quantity: 10 pieces
Price: 0.5-30USD/piece
Packaging Details: 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler
Delivery Time: 4-6 weeks
Payment Terms: T/T, Western Union
Supply Ability: 5000 pieces/month
Detail Information
Material: N-BK7 Size Tolerance: +/-0.1mm
Surface Quality: 40/20 Standard Coating: Uncoated
Diameter Range: 1-20mm Usage: Optical System
High Light:

custom optical lens


double convex mirror

Product Description

Ball Lens

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.

We 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, 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.

High Performance Uncoated N-BK7 Ball Lenses Used In Fiber Optic Applications 0


Optical Specifications

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


Material Characteristics

Fused Silica Ball and Half-Ball Lenses:
1,Excellent UV Transmission
From 200nm to 2200nm
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




Production Line

High Performance Uncoated N-BK7 Ball Lenses Used In Fiber Optic Applications 1

What's the way of shipping?
We accept DHL, Fedex, TNT, UPS, SF, EMS etc. If you have your own express account, it's great.


How to pay?

(1) T/T, PayPal, West Union,etc

(2) Bank Fee: West Union-USD30.00(≤USD3000.00),

T/T-USD20.00+, PayPal-5%. Please consult the local bank.

What's the deliver time?
For inventory: the delivery time is around 5 workdays.

Customized products: the delivery time is 10 to 30 workdays. According to the quantity and precision.

Can I customize the products based on my need?
Yes, we can customize the material, specifications and optical coating for your optical components based on your needs. OEM is available.


Contact Details