Results 241 to 250 of about 128,668 (300)

How to integrate volume holographic optical elements (vHOE) made with Bayfol HX film into plastic optical parts

Optics + Optoelectronics, 2019
See-through optical components are being intensively studied in applications such as Head-Up-Displays (HUD) and Head-Mounted-Displays (HMD). In particular, volume holographic optical elements (vHOE) have received a lot of attention due to their unique ...
F. Bruder, Sven Hansen, Tim Kleinschmidt, R. Künzel, C. Manecke, E. Orselli, C. Rewitz, T. Rölle   +7 more
semanticscholar   +1 more source

Angle-compensated holographic wave front printing for the fabrication of holographic optical elements operating in the infrared

, 2019
. We introduce a technique for recording volume holographic optical elements (vHOEs) designed for operation at a wavelength different from the recording wavelength.
Johannes Hofmann, Anna-Katharina Friedel, Reinhold Fiess, W. Stork   +3 more
semanticscholar   +1 more source

Achromatic Holographic Optical Elements

Journal of Optics, 1978
It 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.
openaire   +1 more source

Advances in holographic optical elements

SPIE Proceedings, 1990
Recent advances in the design and recording of holographic optical elements are illustrated by means of two representative examples - focussing lens and multiple beam grating. The focussing lens design method is based on an analytic ray-tracing procedure that yields an analytic solution for the diffractive grating function.
Asher A. Friesem, Nir Davidson, Erez Hasman, Opher Kinrot   +3 more
openaire   +1 more source

An advanced ray-tracing model for multi-color holographic optical elements

SPIE/COS Photonics Asia, 2019
In this paper, an advanced ray-tracing model for simulating holographic optical element is programmed and demonstrated in Zemax OpticStudio. The model integrates the physical properties of the hologram, such as diffraction direction and efficiency based ...
Han-Hsiang Cheng, Xiaochaoran Tian
semanticscholar   +1 more source

Holoconcentrators as holographic optical elements

ICALEO '83: Proceedings of the Information Processing and Holography Symposium, 1983
In this paper, two basic problems of dichromated gelatin holoconcentrator designs: ray-tracing computing and diffraction efficiency characteristics optimization, are considered.
P. Bendt, T. Jannson, H. Tin, H. A. Yu
openaire   +1 more source

Achromatic triplet using holographic optical elements

Applied Optics, 1977
An 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.
openaire   +2 more sources

Holographic Optical Elements Using Polyvinyl Carbazole Holographic Material

SPIE Proceedings, 1986
We developed a new holographic material: polyvinyl carbazore material. The advantage or the material over conventional DCC material is that it has high durability against humidity and transparency. Some optical properties of the material and some applications are presented.
K. Matsumoto, T. Kuwayamo, M. Matsumoto, N. Taniguchi   +3 more
openaire   +1 more source

Holographic Optical Elements with Electro-optic Control

2021
Although polymeric and liquid crystalline materials have been separately studied for many years, optical devices based the interaction between these two materials in a composite device have come to the forefront of technology in recent years. Liquid crystals typically have strong interactions with the surfaces with which they make contact, with the ...
Michael Leigh Ermold, Adam Fontecchio
openaire   +1 more source

Aberration coefficients of curved holographic optical elements

Applied Optics, 1986
A 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
openaire   +2 more sources