SO-L15 SERIES
SO-L15 negative achromatic doublets combine two optical glasses to provide diverging power with substantially lower longitudinal chromatic aberration than a singlet. They are useful in broadband beam expanders, corrected relay groups and imaging systems that need negative power across visible or near-infrared bands.
Product Overview
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Engineering Guidance
Choose the configuration around focal length and working wavelength
Optical behavior
The series includes multiple glass combinations and coating bands. Select by negative focal length and diameter, then verify back focal length, center and edge thickness, glass pair and coating range against the optical prescription.
Selection and integration
A negative achromat is normally used as part of a compound system; evaluate it with the mating positive group rather than as an isolated imaging lens.
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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