Optical Glass 50mm Custom Ball Lenses K9 JGS1 Sapphire H-Zlaf92 for Fiber

Item Number:X-P23B1X9401B

Optical ball lens is highly transparent spheres made of optical glasses. It is used to focus light into fibers as in diode laser-to-fiber coupling as well as fiber-to-fiber coupling. Ball lenses have high coupling efficiency and should be much easier to align than traditional lenses due to their physical shape.

  • Material: BK7, sapphire, FS, Si, Ge, ZnS and so on
  • Diameter: 0.50mm-150mm
  • Tolerance: 0.001-0.003
  • Sphericity: 0.001
  • Surface Quality: 20-10 or better
  • Coating: Optional

What is Ball lenses? 

Ball lens is great optical components for improving signal coupling between fibers, emitters, and detectors. 
Glass ball lenses are manufactured from a single substrate of glass and can focus or collimate light.
Ball lenses are highly polished spheres made of optically transparent homogeneous materials. 
Carefully controlled manufacturing process produces spheres with precise diameters and unsurpassed surface quality. 


What are the uses of ball lenses?

Optical glass ball lenses are widely used in scanning, optical sensing, and endoscopy etc..
Spherical glass ball lens can be used to couple fibers, allowing light to travel between fibers with minimal losses.
Ball lens is an important part of telecom and other fiber optic systems. 


What is the effective focal length of a ball lens?

The effective focal length is equal to the index of refraction (denoted here by n) times the diameter of the ball lens (D), divided by 4(n-1). We can write this as EFL = [n D]/[4(n-1)]. The
back focal length equals the effective focal length – D/2.


VY 50mm ball lens shown in the picture



Specifications of Ball lens

Material k9
Diameter  50mm
Surface polished


Video demonstration of glass K9 ball lenses



What can VY manufacture of ball lenses and half ball lenses?

VY is specialized in manufacturing and producing glass ball lens and half ball lenses product with optical H-K9L glass and infrared material (such as Ge,Si,ZnSe,Zns,Sapphire, Ruby etc.).
We are a factory in China, the capacity of every month is 5, 000,000 pieces, we have sphere lens and hemisphere lens with varied size and material in stock, like diameter 0.5mm - 400mm.
Besides customizing ball lens and half-ball lens according to your specification, we also have large inventory of ball lenses and half balll lens in our warehouse.



People Also Ask

  • What magnification does a ball lens have?
    Ball lenses are highly transparent spheres made with optical glass. Some of the earliest microscope lenses — developed by Antoni van Leeuwenhoek — relied on surface tension to form small spheres from melted glass. These lenses achieved magnifications as large as 275x and were as small as 1.5 mm in diameter.

  • What is a half ball lens?
    Ball lenses are completely spherical lenses most commonly used to couple light in and out of fibers. Half-ball lenses are hemispheres. We supply high precision grade-3 ball lenses, midrange grade-25 ball lenses and commercial grade-100 ball lenses offering all grades to suit any application.


Want to learn more / get a quote? Just click here to contact us now~ 

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