Results 241 to 250 of about 122,050 (289)
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Optics Letters, 2019
An integral imaging-based 2D/3D convertible display system is proposed by using a lens-array holographic optical element (LAHOE), a polymer dispersed liquid crystal (PDLC) film, and a projector.
Hanle Zhang +5 more
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An integral imaging-based 2D/3D convertible display system is proposed by using a lens-array holographic optical element (LAHOE), a polymer dispersed liquid crystal (PDLC) film, and a projector.
Hanle Zhang +5 more
semanticscholar +1 more source
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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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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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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Optics and lasers in engineering, 2019
In this communication, the measurement of flame temperature and flame temperature instability in macro, micro-sized flames using digital holographic interferometer based on volume phase holographic optical element is experimentally demonstrated.
Vivek Rastogi +3 more
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In this communication, the measurement of flame temperature and flame temperature instability in macro, micro-sized flames using digital holographic interferometer based on volume phase holographic optical element is experimentally demonstrated.
Vivek Rastogi +3 more
semanticscholar +1 more source
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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Testing of holographic optical elements for holographic gun-sight
Optics and Lasers in Engineering, 2008Conventional methods of measuring the various parameters of holographic optical elements are tedious for mass production. A novel approach is described for the holographic elements used in the holographic sight, in which the parameters are defined and measured as per their intended final application.
Rahul Bhatt +4 more
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Journal of The Optical Society of America A-optics Image Science and Vision, 2019
An augmented reality (AR) three-dimensional (3D) display based on one-dimensional integral imaging (1DII), by using a lenticular lens array holographic optical element (LLA-HOE), is proposed.
Huan Deng +5 more
semanticscholar +1 more source
An augmented reality (AR) three-dimensional (3D) display based on one-dimensional integral imaging (1DII), by using a lenticular lens array holographic optical element (LLA-HOE), is proposed.
Huan Deng +5 more
semanticscholar +1 more source
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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