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Putting Tunable Light Sources to the Test Feb 10, 2016 — Many common spectroscopic measurements require the coordinated operation of a detection instrument and light source, as well as data acquisition and processing. Integration of individual components can be challenging and various applications may have different requirements. Conventional lamp-based tunable light sources are a popular choice for applications requiring a measurement system with this degree of capability. Many types of tunable light sources are available, with differences in
Microscopy: Key Considerations for Nonlaser Light Sources Jan 19, 2016 — As recently as five years ago, shopping for a microscope light source was fairly straightforward. For routine applications, it was tungsten halogen, typically 100 W, while for fluorescence, it was an arc source, typically 100 W mercury. Today, there...
Aspheric Lenses: Design Considerations Apr 27, 2015 — This first of two articles will cover design and manufacturing options for aspheres; the second will include more detail on manufacturing and testing processes. These articles will provide the tools optics designers need to tailor their designs to...
Laser Safety Considerations for Industrial Environments Apr 9, 2015 — When purchasing an industrial laser system, the astute buyer will look for a Class 1 laser product – a system where the laser beam hazard is completely enclosed and there is no potential laser radiation exposure to the operator or anyone in...
Integrating Spheres: Collecting and Uniformly Distributing Light Jan 1, 2015 — The integrating sphere is a simple, yet often misunderstood, device for measuring optical radiation. An integrating sphere’s function is to spatially integrate radiant flux (light). However, before one can optimize a sphere design for a...
Interferometry: Measuring with Light Jan 1, 2015 — Long applied to optical shop testing, interferometry is now used to measure many different types of parts in a variety of applications, such as optical system performance, surface roughness, surface form and displacement of moving surfaces. An...
Light-Emitting Diodes: A Primer Jan 1, 2015 — Light-emitting diodes (LEDs) are semiconductors that convert electrical energy into light energy. The color of the emitted light depends on the semiconductor material and composition, with LEDs generally classified into three wavelengths:...
Optical Delay Lines: Key to Time-Resolved Measurements Dec 8, 2014 — To obtain an accurate means of creating reliable delays in any time-resolved spectroscopy or dynamic experiment, several factors about the delay line stage must be considered to reduce or eliminate errors associated with linear stages. One of the...
Standard CIE Illuminants Mar 8, 2009 — For purposes of standardized discussion of colorimetry, the Commission International de L'Eclairage (International Commission on Illumination), CIE established three standard sources of illumination: the tungsten lamp, noon sunlight and average...
Colorimetry: How to Measure Color Differences Apr 13, 2006 — Colorimetry, the science of color measurement, is widely employed in commerce, industry and the laboratory to express color in numerical terms and to measure color differences between specimens. Applications include paints, inks, plastics, textiles...
Machine Vision Lighting: A First-Order Consideration Apr 13, 2006 — Lighting, sometimes a step-child in machine vision considerations, has become a first-order consideration in automated applications. In the beginning, automated inspection focused on the camera and optics, the algorithms, the interface hardware and...
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