Featured Article
Theory And Measurement Of The Modulation Transfer Function (MTF)
 
By Image Science Ltd.

A modulation transfer function (MTF) is a quantitative and objective measure of the quality of an image formed by a lens or and electro-optical system. This measurement is appropriate for lenses of all qualities and can be calculated from lens design data, which enables theoretical and actual performances to be compared. The MTF measurement has almost completely replaced older visual tests that relied on human judgement.

Spotlight On Fluorescence Microscopy
Fluorescence Filters

Iridian offers excitation, dichroic, and emission fluorescence spectroscopy filters for confocal microscopy, flow cytometry, and other biomedical applications. These three different filter types are often used in a set in order to maximize the desired signal while minimizing the undesired signal.

Luminescence Lifetime Imaging Camera

The pco.flim camera system is the first luminescence lifetime imaging camera designed to use a two tap CMOS image sensor. It is purposed for a wide variety of life science applications including biomarkers, sensing, and fluorescence lifetime imaging.

Microscope For Fluorescence Microscopy

Mad City Labs’ RM21 microscope is an adaptable microscopy platform designed to allow direct access to the entire optical pathway, and is capable of precision alignment in the X, Y, and Z axes. The Z-axis objective lens holder is precision aligned with the optical axis of the platform and can hold a single objective lens. 

Resources
Getting The Best Results From NIR Measurements

Near infrared measurements (700 to 2500 nm) usually are made in transmission and reflection, used to probe the molecular structure and composition of materials. NIR is preferred over mid-infrared when measurements need to be made at a distance, or with little or no sample preparation. 

Thermal Stability Of The 157 Series Optical Thickness Gauge

This technical note explains how continuous references measurements, an optical design used to maintain optical alignment, and an interferometer’s optical path all contribute to the thermal stability of the 157 Series Optical Thickness Gauge by Bristol Instruments.

Glossary Terms

Review this glossary of optics and optical manufacturing terms by Abrisa Technologies.

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Featured Multimedia
Next-Generation Detector Technologies For High-Speed Thermal Applications
 

Ross Overstreet from FLIR gave us a quick introduction to two new thermal camera platforms they’re showcasing at SPIE Photonics West 2017, and then discussed the variety of applications that infrared imaging technology can be used for.

Bulletin Board
Optics And Optical Coatings
 

OptoSigma’s vast optics offerings include various types of mirrors, beamsplitters, polarizers, lenses, multi-element optics, filters, prisms, substrates, and windows. Where optical coatings are concerned, they offer metal, dielectric, laser damage threshold, and multilayer coatings, in addition to custom or special coating requirements.

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