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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...
Excimer Optics: High Power Demands High Reliability
Michael A. Case, Teledyne Princeton Instruments, Business Unit of Teledyne Technologies
The first high-reflectance mirror coatings for the UV and vacuum UV (VUV) were of the Al + MgF2 type produced in the late 1950s. Coatings of this design are still used today for multigas cavity...
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...
Diamond Machining: Ultraprecision Machine Technology
Engineering Staff, AMETEK Precitech, Inc.
Ultraprecision machining can be defined in general terms as the removal of material from a substrate utilizing a machine tool that operates at a resolution of 10 nm (0.4 μin.) or less. The...
Beryllium Mirrors: Refinements Enable New Applications
Vladimir Vudler and Peter Richard, Hardric Laboratories, Inc.
With a specific gravity of 1.85 g/cm3, beryllium is the lightest metal that is workable. It is 45 percent lighter than aluminum and approximately five times as stiff. Its stiffness to weight ratio...
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...
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...
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