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Focus on Polarization May 31, 2016 — 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 the intensity of light over a broadband spectrum at pixel level1, while a color or multispectral camera is used to detect the intensities of light at the red, green, blue and near-IR wavelength bands2,3. Similarly, a polarization camera captures the intensity of light at multiple polarization states.
Fluorescence Lifetime Imaging Made Easy Feb 16, 2016 — The term fluorescence is often applied as a synonym for photoluminescence, although luminescence actually covers fluorescence and phosphorescence. Both of these terms describe the process of absorption of light at a higher energy and subsequent...
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...
Image Quality Testing: Camera Advances Push Improvements Feb 4, 2015 — An overview of state-of-the-art technology for image quality testing of mass-produced camera modules for consumer devices, including recent developments and new challenges. Image quality testing of complete cameras and assembled camera modules is...
Camera Resolution: Combining Detector and Optics Performance Mar 8, 2009 — Most image-quality discussions center on resolution, which is thought to uniquely determine system performance. Resolution, however, is a more complex concept. Camera resolution depends upon the optical blur diameter and the detector size. Schade...
Digital Still Cameras: The Changing Face of Imaging Mar 8, 2009 — The digital camera reflects a sea change in the compact camera market. While the 20th was the century of film cameras, the 21st belongs to the digital camera. The digital camera re...
High-Speed Video: Selecting a Slow-Motion Imaging System Mar 8, 2009 — The demand for high-speed imaging has increased for a broad range of applications, from automotive crash testing to animal behavior to product component performance. There is a growing market for imaging systems that provides an immediate,...
Hyperspectral Imaging Spectroscopy: A Look at Real-Life Applications Mar 8, 2009 — Spectral imaging has grown from an expensive research-oriented technique to one that is applicable for a wide range of scientific and industrial applications. This article looks at real-life systems, the arrangement of the instrumentation and...
Image Intensification: The Technology of Night Vision Mar 8, 2009 — Through succeeding generations, image intensifying devices have brought vision to the dark of night. Image intensification, the basis of night vision, is a complex conversion of ene...
Image Processing: Turning Digital Data into Useful Information Mar 8, 2009 — Digital imaging provides the means to enhance features of interest while attenuating details that are irrelevant to a given application, and then extracts useful information about the scene from the enhanced image. Images are produced by many means:...
Infrared Spectral Selection: It Begins with the Detector Mar 8, 2009 — An IR imaging system employing a narrow spectral band brings hidden images to light, broadening IR imaging’s applications. Spectral selection is a powerful tool that enhances conventional imaging tremendously. Most imaging systems, including the...
Radiation Tolerances: Effects on CID Imaging Devices Mar 8, 2009 — The charge-injection device (CID) is a broadband (200 to 1100 nm) charge-transfer device (CTD) image sensor with capabilities well beyond the limitations of typical commercially...
Ultraviolet Reflectance Imaging: Applications Mar 8, 2009 — Ultraviolet imaging has long been thought to be difficult and awkward by many photographers because of the difficulties encountered when using photographic film in the near-UV...
Digital Cameras: Smaller Pixels for Higher Resolution Apr 13, 2006 — Reducing pixel size can increase a digital camera's performance. However, there are tradeoffs that need to be considered when going that route. In the search for ever-higher pixel counts for the digital still camera, it is clear that, if chip size...
SWIR Imaging: An Industrial Processing Tool Apr 13, 2006 — Short-wave infrared (SWIR) imaging with InGaAs-based cameras is well suited to nondestructive identification of materials, their composition, coatings and other characteristics.
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