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Scrambled Light Hones Images

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PRINCETON, N.J., April 22, 2009 – A new imaging system can unscramble the rich visual information provided by nonlinear optical materials to produce sharper images with a wider field of view. The method could improve medical diagnostics by helping to build more powerful microscopes and other optical imaging systems. “It allows you to take a closer look at an object without narrowing your field of view,” said Jason Fleischer, an assistant professor of electrical engineering at Princeton University who led the research. The study, co-written with graduate students Christopher Barsi and Wenjie Wan, is reported as the cover...Read full article

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    Published: April 2009
    Glossary
    aperture
    An opening or hole through which radiation or matter may pass.
    distortion
    A general term referring to the situation in which an image is not a true-to-scale reproduction of an object. The term also is used to connote the temporal alteration of the signal's waveform shape. There are many types of distortion. See also anamorphic distortion; curvilinear distortion; keystone distortion; panoramic distortion; perspective distortion; radial distortion; stereoscopic distortion; tangential distortion; wide-angle distortion.
    field of view
    The field of view (FOV) refers to the extent of the observable world or the visible area that can be seen at any given moment through a device, such as an optical instrument, camera, or sensor. It is the angular or spatial extent of the observable environment as seen from a specific vantage point or through a particular instrument. Key points about the field of view include: Angular measurement: The field of view is often expressed in angular units, such as degrees, minutes, or radians. It...
    image
    In optics, an image is the reconstruction of light rays from a source or object when light from that source or object is passed through a system of optics and onto an image forming plane. Light rays passing through an optical system tend to either converge (real image) or diverge (virtual image) to a plane (also called the image plane) in which a visual reproduction of the object is formed. This reconstructed pictorial representation of the object is called an image.
    lithography
    Lithography is a key process used in microfabrication and semiconductor manufacturing to create intricate patterns on the surface of substrates, typically silicon wafers. It involves the transfer of a desired pattern onto a photosensitive material called a resist, which is coated onto the substrate. The resist is then selectively exposed to light or other radiation using a mask or reticle that contains the pattern of interest. The lithography process can be broadly categorized into several...
    microscope
    An instrument consisting essentially of a tube 160 mm long, with an objective lens at the distant end and an eyepiece at the near end. The objective forms a real aerial image of the object in the focal plane of the eyepiece where it is observed by the eye. The overall magnifying power is equal to the linear magnification of the objective multiplied by the magnifying power of the eyepiece. The eyepiece can be replaced by a film to photograph the primary image, or a positive or negative relay...
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    optical
    Pertaining to optics and the phenomena of light.
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    superresolution
    Superresolution refers to the enhancement or improvement of the spatial resolution beyond the conventional limits imposed by the diffraction of light. In the context of imaging, it is a set of techniques and algorithms that aim to achieve higher resolution images than what is traditionally possible using standard imaging systems. In conventional optical microscopy, the resolution is limited by the diffraction of light, a phenomenon described by Ernst Abbe's diffraction limit. This limit sets a...
    ultraviolet
    That invisible region of the spectrum just beyond the violet end of the visible region. Wavelengths range from 1 to 400 nm.
    apertureBiophotonicsblurrycamerascrystalsdefensedistortionfiber opticsField of ViewFleischerimageImagingindustriallenseslithographymedical diagnosticsmicroscopeMicroscopynanoNews & FeaturesnonlinearopticalOpticsphotonicsPrincetonResearch & TechnologyscrambledSensors & Detectorssuperresolutionultravioletunscrambledx-ray

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