Results 181 to 190 of about 3,412 (219)
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Computer-originated planar holographic optical elements
Applied Optics, 1998We present novel, to our knowledge, methods for the analytical design and recording of planar holographic optical elements in thick materials. The recording of each planar holographic element is done by interference of two aspherical waves that are derived from appropriately designed computer-generated holograms such that the element has the desired ...
S, Reinhorn, Y, Amitai, A A, Friesem
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Aberration coefficients of curved holographic optical elements
Applied Optics, 1986A general formula is derived that gives all aberration terms of holographic optical elements on substrates of any shape. The spherical substrate shape and the planar substrate shape are treated as important special cases. A numerical example illustrates the need of including higher-order aberrations.
P E, Verboven, P E, Lagasse
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Holographic Optical Element for Visual Display Applications
Applied Optics, 1973Off-axis and off-bisector reflection-type holographic visual display elements have been recorded in dichromated gelatin deposited on planar or spherical shell substrates of glass or Plexiglas. A procedure for bonding gelatin to Plexiglas is given. Holographic elements are recorded at the argon wavelength of 514.5 nm and reconstructed with spectral ...
D G, McCauley +2 more
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Achromatic Holographic Optical Elements
Journal of Optics, 1978It is shown that the holographic optical elements (HOE) can be achromatised to be used with polychromatic light. The two-elements and three elements achromatic HOE systems possess negative power and hence should be used in conjunction with refractive/reflective optics.
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Curved holographic elements for optical coordinate transformations
Optics Letters, 1991A new method for performing optical coordinate transformation is presented. It is based on a curved holographic element on which the interference pattern of two perpendicular plane waves is recorded. The design procedures and results for two curved elements that perform a one-dimensional logarithmic coordinate transformation and a Gaussian-to-uniform ...
N, Davidson +3 more
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Photovoltaic concentrator using a holographic optical element
Applied Optics, 1988A photovoltaic concentrator is proposed that uses equatorial tracking (the rotation axis of a concentrator points to the North Star), so that the change of the sun's altitude angle is minimized. The solar concentrator consists of a Fresnel lens (objective), a holographic optical element made on photoresist with 90% diffraction efficiency, and a field ...
Y W, Zhang +3 more
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Holographic optical system to copy holographic optical elements
1991A holographic system formed by two holographic lenses that, when working with white light, allow selection of a particular wavelength is presented. If adequate spatial and temporal coherence conditions are obtained, it is possible to copy holographic optical elements (HOEs) with partially coherent light by using optical systems formed by holographic ...
Pascual Villalobos, Inmaculada +2 more
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Holographic optical elements for holographic stereogram printers
1991Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1991. ; Includes bibliographical references (p. 97-98). ; by Michael Anthony Klug. ; M.S.
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