K9 Ball Lens front product view on a dark background
Angled view of K9 Ball Lens for laser focusing, imaging and beam-shaping systems

SO-L27 SERIES

K9 Ball Lens

SO-L27 K9 ball lenses offer compact positive power for fiber coupling, diode-laser collimation, endoscopy, compact sensors and educational optical assemblies. Their spherical form enables short focal lengths and small package sizes without a conventional lens edge.

K9 Optical Glass
$33.82
$33.82

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Product Overview

Configure K9 Ball Lens around focal geometry and coating

Select the ball diameter in relation to the beam or fiber numerical aperture, then use focal length and back focal length to set source spacing. Because working distances are short, mount concentricity and axial positioning require close control.

Uncoated K9 ball lenses are economical for prototyping; reflection losses should be included in the coupling budget.

Select a Model

models

Engineering Guidance

Choose the configuration around focal length and working wavelength

Optical behavior

Select the ball diameter in relation to the beam or fiber numerical aperture, then use focal length and back focal length to set source spacing. Because working distances are short, mount concentricity and axial positioning require close control.

Selection and integration

Uncoated K9 ball lenses are economical for prototyping; reflection losses should be included in the coupling budget.

Need a different diameter, tolerance or coating?

Custom substrate materials, dimensions, angular tolerances and coating bands can be reviewed for prototype and production quantities.

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Technical Resources

Related engineering articles

Selection notes and practical guidance matched to this product family.

CANAL GLASS SHOP
TECHNICAL RESOURCE
Optical Fundamentals · 7 min

Understanding Focal Length, BFL and Lens Orientation

Relate effective focal length, back focal length and lens orientation to focusing and collimation performance.
CANAL GLASS SHOP
TECHNICAL RESOURCE
Material Selection · 6 min

K9 Glass, Fused Silica and Optical Material Tradeoffs

Compare transmission, thermal behavior and cost before choosing a substrate for a precision lens.
CANAL GLASS SHOP
TECHNICAL RESOURCE
Selection Guide · 8 min

Reading Radius, Center Thickness and Surface Quality

Use geometric and surface specifications to confirm optical fit, mounting depth and expected image quality.