Lenses

SWIR imaging can show bruising in fruit that wouldn't be evident with a visible camera. Credit: Sony

Optics design challenge for SWIR

Edmund Optics’s Thomas Armspach-Young and Boris Lange consider the optics needed to get the best out of Sony's new short-wave infrared image sensors

Aberrational balancing of MTF in lens design

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This white paper from Edmund Optics examines a hybrid approach to lens design for when a custom lens optimised for a specific magnification, working distance and sensor is not feasible. Lenses can be designed such that the spacing between elements or groups of elements can be adjusted; fine-tuning an existing design in this way can produce excellent results in less time and at a lower cost than a full custom design.

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Introduction to Modulation Transfer Function

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When optical designers attempt to compare the performance of optical systems, a commonly used measure is modulation transfer function. In order to understand the significance of MTF, consider some general principles and practical examples for defining MTF including its components, importance, and characterisation

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