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17 articles
Photonics Handbook
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Digital Cameras: Smaller Pixels for Higher Resolution
Albert Theuwissen, DALSA Professional Imaging
In the search for ever-higher pixel counts for the digital still camera, it is clear that, if chip size remains constant, then “more pixels” means “smaller pixels.” The...
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...
Polarization-Based Imaging: Basics and Benefits
XING-FEI HE, TELEDYNE DALSA
There are three fundamental properties of light: intensity, wavelength, and polarization. Almost all cameras today are designed for monochrome or color imaging. A monochrome camera is used to measure...
Machine Vision Cameras: Making the Right Selection
GLEN AHEARN, TELEDYNE DALSA
Technological advances have resulted in new, higher-quality sensors that enable machine vision cameras to deliver greater features and functionality at a lower cost than ever before. These factors...
QCL Primer: History, Characteristics, Applications
Hamamatsu Corporation
Since its first successful operation in 1960 at Hughes Research Labs, the laser technology has been at the center of innovation and research. Semiconductor lasers first made their appearance in 1962...
Excimer Lasers: Photonic Stamps with Micron Resolution
Coherent, Inc.
Excimers are pulsed gas lasers that deliver high output power and pulse energies in the ultraviolet and deep-ultraviolet wavelengths. This enables them to power applications that cannot be supported...
Detectors: CCDs for Life-Science Applications
Butch Moomaw, Hamamatsu Corporation, Systems Div.
Since their invention in the late 1960s, charge-coupled devices, also called CCDs, have found widespread use in imaging applications. Electronic cameras based on CCD technology are used in...
Ultraviolet Reflectance Imaging: Applications
Dr. Austin Richards, Oculus Photonics
Reflected-ultraviolet imaging is a rather mysterious area of the imaging field. There is relatively little actual UV imagery to be found on the Internet or in the literature compared to near-infrared...
Photonics Packaging: Optical Communication Components
Torsten Wipiejewski, VNT Management Oy, German Office
Photonic components are key elements for the information technology (IT). Photonics technology covers the generation of information (cameras, sensors), its transportation (optical communication),...
Detector Arrays: Taming the Irregular Shape Problem
Gerald C. Holst, JCD Publishing
If we were to estimate the output of a CCD or thermal camera, we would typically draw an image over the detectors, aligning the image with the detector axes. We show it this way because it’s...
Digital Still Cameras: The Changing Face of Imaging
Morio Onoe, Professor Emeritus, University of Tokyo
The digital camera represents an integration of optics, mechanics and electronics consisting of three layers (Figures 1a, b and c). The top and the middle layers are printed circuit boards (PCBs),...
High-Speed Video: Selecting a Slow-Motion Imaging System
Andrew Bridges, Photron USA, Inc.
There is a growing market for imaging systems that provides an immediate, slow-motion view of a process that allows one to see events that happen too quickly for the human eye to perceive or...
Infrared Spectral Selection: It Begins with the Detector
Austin Richards, FLIR Systems, Commercial Vision Systems
Spectral selection is a powerful tool that enhances conventional imaging tremendously. Most imaging systems, including the human eye, are designed to image light over a broad range of the spectrum....
Imaging Colorimetry: Accuracy in Display and Light Source Metrology
Ron Rykowski and Hubert Kostal, Radiant Imaging, Inc.
The market for flat panel displays (FPDs) has undergone tremendous growth, driven mostly by increased demand for televisions, cell phones, computers, digital cameras and MP3 players. Similarly,...
Image Processing: Turning Digital Data into Useful Information
William Silver, Cognex Corp.
Images are produced by many means: cameras, x-ray machines, electron microscopes, radar and ultrasound. They are used in the entertainment, medical, scientific and business industries; for security...
SWIR Imaging: An Industrial Processing Tool
Sensors Unlimited Inc., A Collins Aerospace company
Imaging has long been used in industrial processes to measure, monitor, control, or otherwise manage the production of goods. The challenge to the process designer is to develop a tool that captures...
Particle Image Velocimetry: Basics, Developments and Techniques
M. Kelnberger, InnoLas GmbH; G. Schwitzgebel, Universität Mainz
Particle image velocimetry (PIV) is an experimental tool in fluid mechanics and aerodynamics. The basic principle involves photographic recording of the motion of microscopic particles that follow...
Photonics Handbook
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