Results 191 to 200 of about 2,735 (223)
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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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Holographic optical element for projection of stereo images
Applied Optics, 1992We present a holographic element, capable of projecting dynamic stereoimages and allowing the observer to see through the device, forpossible use as a heads-up display in aircraft.
D R, Wuest, R S, Lakes
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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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Phase holographic optical elements and geometrical optics
Journal of the Optical Society of America A, 1997In the framework of geometrical optics, we show that the general ray-tracing formula for finding the direction of the diffracted rays for thin phase holographic optical elements located on any arbitrary continuous surface can be derived in a form similar to Fermat's principle.
P. J. Twardowski, J. Harthong
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Optical Interconnects with Reflection Holographic Optical Elements
Topical Meeting on Holography, 1986The increasing demands on micrelectronic circuits for small size and high data rates has pushed electronic interconnection technology to its limit. New techniques are being sought to circumvent these difficulties. Among them are optical interconnections.
R.K. Kostuk, J. W. Goodman, L. Hesselink
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Achromatic triplet using holographic optical elements
Applied Optics, 1977An achromatic optical system can be made using three holographic optical elements. A very simple design scheme is presented, and the properties of the system are discussed.
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A Holographic Optical Element for an Integrated Optical Head
Optical Review, 1996Diffraction efficiencies of a reflection-type blazed holographic optical element (HOE) are analyzed and optimized for use in a totally integrated optical head. The HOE, consisting of four-step phase levels, was fabricated by a double-etching process.
Yoshiaki Kmma +4 more
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Designing and constructing thick holographic optical elements
Applied Optics, 1978Previously, holographic optical elements have been constructed with two spherical waves. Better image quality and efficiency can be achieved by constructing thick HOE's with spherically aberrated wavefronts. We include an exact lens equivalent for a HOE to allow computer optimization of such systems. The effect of changes in the index of refraction and
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Holographic augmented reality display with conical holographic optical element for wide viewing zone
Light Advanced Manufacturing, 2022Yusuke Sando +2 more
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