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

SO-L26 SERIES

K9 Drum Lens

SO-L26 K9 drum lenses provide strong positive power in a compact body with a cylindrical mounting surface. They are used in fiber launch assemblies, diode-laser collimators, compact illumination modules and optical probes where a ball lens would be harder to position reliably.

K9 Optical Glass
$51.47
$51.47

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Product Overview

Configure K9 Drum Lens around focal geometry and coating

Diameter and center thickness define the mechanical envelope; focal length and back focal length determine the source or fiber spacing. The short working distance makes axial tolerance and barrel concentricity especially important.

Use the drum geometry when repeatable mechanical location is a priority in a miniature coupling assembly.

Select a Model

models

Engineering Guidance

Choose the configuration around focal length and working wavelength

Optical behavior

Diameter and center thickness define the mechanical envelope; focal length and back focal length determine the source or fiber spacing. The short working distance makes axial tolerance and barrel concentricity especially important.

Selection and integration

Use the drum geometry when repeatable mechanical location is a priority in a miniature coupling assembly.

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.