SO-L04 SERIES
SO-L04 precision K9 bi-concave lenses deliver negative optical power in a symmetric form, including miniature diameters for compact beam-control assemblies. Typical uses include beam expansion, Galilean optical trains, negative relay groups and laboratory systems with finite conjugates on both sides of the lens.
Product Overview
Select a Model
models
Engineering Guidance
Choose the configuration around focal length and working wavelength
Optical behavior
The model table provides negative focal length and back focal length together with equal-surface radius, center thickness and edge thickness. These values are especially important for miniature holders where the thicker edge governs retention clearance.
Selection and integration
Keep the lens centered and avoid excessive edge clamping; bi-concave elements can be mechanically more sensitive at small diameters.
Need a different diameter, tolerance or coating?
Custom substrate materials, dimensions, angular tolerances and coating bands can be reviewed for prototype and production quantities.
Technical Resources
Related engineering articles
Selection notes and practical guidance matched to this product family.
CANAL GLASS SHOP
TECHNICAL RESOURCE
TECHNICAL RESOURCE
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
TECHNICAL RESOURCE
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
TECHNICAL RESOURCE
Reading Radius, Center Thickness and Surface Quality
Use geometric and surface specifications to confirm optical fit, mounting depth and expected image quality.
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