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metrology Handbook Articles
Measuring Aspheres: Selecting the Best Technique
Aug 1, 2016 — The benefits of aspheric lenses are numerous: They allow for a reduction in spherical aberrations and are ideal for focusing or collimating light, as they can achieve a low ƒ-number. Aspheres also allow the same or better performance using fewer lenses, which often translates to a reduction in both size and weight in a system.
Nanopositioning: A Step Ahead
Feb 1, 2016 — It is almost a cliché among students of creativity that innovation occurs at the intersection of fields. Since nanopositioning is a discipline that has enabled swiftly evolving application arenas as diverse as materials science, genomics, photonics,...
Aspheric Lenses: Optimizing the Design
Sep 1, 2015 — This second of two articles discusses the tools optical designers need to tailor their designs to the appropriate manufacturing process, optimizing the cost of component fabrication.
Flat Optics: Considerations When Buying
May 28, 2015 — To simplify the process when purchasing flat optics, we will discuss the top six factors from a manufacturer’s perspective, all of which affect the three major areas of the purchasing decision: quality, delivery, and cost. Flat optics generally...
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...
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...
Plastic Optics: Specifying Injection-Molded Polymer Optics
Jan 1, 2015 — 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 as an important enabling technology allowing the...
Broadband Spectrophotometry: A Fast, Simple, Accurate Tool
Mar 8, 2009 — Broadband spectrophotometers coupled with relatively simple algorithms can provide fast, nondestructive and comprehensive characterization of thin films. Designing devices that incorporate ultrathin films is an important means of enhancing yields....
Diamond Machining: Ultraprecision Machine Technology
Mar 8, 2009 — 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 machining process may take the form of single-point...
Imaging Colorimetry: Accuracy in Display and Light Source Metrology
Mar 8, 2009 — CCD-based instruments provide accurate photometric and colorimetric data for each image pixel, which enables precise characterization of displays, instrument panels, light sources and luminaires for parameters including color, luminance, uniformity,...
Positioning System Performance: Understanding the Rules
Mar 8, 2009 — To make the right decisions and to ensure satisfactory performance in a positioning system, it is necessary to first have a grasp of performance parameters and an understanding of ...
Dynamic Interferometry: Getting Rid of the Jitters
Jan 1, 2008 — Mechanical vibration, moving parts and turbulent airflow present significant problems for most interferometric test methods. New techniques help solve the problem. Conditions on the factory floor and in industrial cleanrooms with high-capacity air...
Polarization Mode Dispersion: Concepts and Measurement
Apr 13, 2006 — The performance of high-speed, digital fiber optic communications systems depends upon how reliably the receiver is able to distinguish closely spaced bits of information. Dispersive effects — physical mechanisms that broaden transmitted...
(13 results found)
April 2024
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