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14 articles
Optics Articles
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What Is Photonics?
Photonics Media Editors
Photonics is the study of light and other types of radiant energy whose quantum unit is the photon. The impact of photonics on research, technology, navigation, culture, astronomy, forensics, and...
Optical System Optimization: Analyzing the Effects of Stray Light
Richard Pfisterer, Photon Engineering LLC
Electrical engineers are very familiar with the effects of shot noise, thermal noise, flicker noise and crosstalk, and recognize how these effects can reduce the signal-to-noise ratio (SNR) in their...
Flat Optics: Considerations When Buying
Michael Naselaris, Sydor Optics Inc.
Flat optics generally perform three main functions: They transmit light (windows), reflect light (mirrors), and fold light (prisms). While most optical manufacturers make spherical and flat optics, a...
Aspheric Lenses: Design Considerations
Jeremy Govier, Edmund Optics Inc.
Aspheric surfaces are powerful tools that combine the optical corrections of multiple lenses into a single element (Figure 1) and affect performance in ways that spherical optics cannot. For example,...
Understanding Surface Quality: A Practical Guide
John C. Smith, Rocky Mountain Instrument Co. (RMI)
Surface quality has become one of the most poorly understood specifications in the optics industry. A significant portion of the confusion stems from the two major competing (and largely...
Ultraviolet Filters: Past and Present
Sarah Locknar, PhD, Omega Optical LLC, an Omega Optical Holdings company
In their earliest forms, UV bandpass filters that were optimized for wavelengths less than 400 nm, such as the Schott UG or the Hoya U-series, were constructed of absorbing compounds in glass. Such...
Thin-Film Coatings: A Buyers' Guide
Trey Turner and Roger Kirschner, Research Electro-Optics Inc. (REO)
What are thin-film coatings? The purpose of any optical thin-film coating is to modify the transmittance and reflectance properties of the substrate material to which they are applied. Most coatings...
Plastic Optics: Specifying Injection-Molded Polymer Optics
William S. Beich, GS PLASTIC OPTICS
The use of precision polymer optics is becoming an increasing necessity today as products demand sophisticated light handling components to achieve desired results. Polymer optics can be thought of...
Illumination Design and Analysis Software: A Vital Tool in the Designer’s Kit
Breault Research Organization, Inc.
Illumination design has developed rapidly to include not only automotive headlamps and street lamps, but also backlit displays, fluorescent panel lighting, light-emitting diode or laser sources, and...
Rules of Thumb
Photonics Rules of Thumb Scientists and engineers tend to want to answer simple relational questions with a blackboard covered with equations, even when questioners just want a rough estimate to...
Nano-Optics: New Rules for Optical Components
Hubert Kostal, NanoOpto Corp.
When physical structures get very small — on the order of molecular or atomic sizes with one or more dimensions on the nanoscale — their behavior and interactions with energy, including...
Polygonal Laser Scanners: Fitting the Elements to the Task
Glenn E. Stutz, Lincoln Laser Co.
Reading and writing systems for polygonal scanners differ in the use of the scanner. However, many performance characteristics are similar for both. In writing applications, a light source, usually a...
Optical Objective Systems: A Schematic Guide
Warren J. Smith, Rockwell Collins Optronics
Simple Meniscus Lens The simple meniscus lens is almost universally used in inexpensive cameras. To get an image of good quality it must be used with a separate aperture stop, reducing the...
Adaptive Optics: Taming Atmospheric Turbulence
Tom Gonsiorowski, Adaptive Optics Associates, Inc., a Wholly Owned Subsidiary of Northrop Grumman Systems
To Isaac Newton the problem was clear, and in 1704 he realized the effects of atmospheric turbulence on image formation. Just as heat waves shimmering above a hot patch of ground can distort our...
Photonics Handbook
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