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'Touching' with Light: Optic Sphere Senses Environs

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CAMBRIDGE, Mass., July 7, 2006 -- A sophisticated, lens-free optical system has been developed from a sphere of photodetecting fibers that can "sense" the optical properties of the surrounding space, detect the source of incoming light and has an unlimited field of view. The system's creators said it may ultimately be used in applications ranging from improving space telescopes to providing the visually impaired with clothing that can "sense" its environs. In what they said is a radical departure from conventional lens-based optics, Massachusetts Institute of Technology scientists developed the new optical system out of...Read full article

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    Published: July 2006
    Glossary
    axis
    A straight line, real or imaginary, passing through a body and indicating its center; a line so positioned that various portions of an object are located symmetrically in relation to the line. See also optical axis.
    eye
    The organ of vision or light sensitivity.
    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...
    light
    Electromagnetic radiation detectable by the eye, ranging in wavelength from about 400 to 750 nm. In photonic applications light can be considered to cover the nonvisible portion of the spectrum which includes the ultraviolet and the infrared.
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