Friesem we present novel, to our knowledge, methods for the analytical design and recording of planar holographic optical elements in thick materials. Testing of holographic optical elements for holographic gun. Made by staircases that approximate the ideal surface relief. We will report on the requirements of the optical system in respect of necessary light power and its equipartition to the photoreceivers. Combining optical holograms with interactive computer graphics t oday, many applications for optical holograms exist, including interferometry, copy protection, data storage, and holographic optical.
A holographic optical element hoe is an optical element such as a lens, filter, beam splitter, or diffraction grating that is produced using holographic imaging processes or principles. Volume holographic optical elements as solar concentrators. Holographic materials and optical systems download link. The new headsup display uses holographic optical elements to inject an image into the glass, or waveguide left. Silver halide sensitized gelatin shsg holograms are similar to holograms recorded in dichromated gelatin dcg, the main recording material for holographic optical elements hoes.
Design and fabrication of an optimum holographic optical element lens for a femtosecond laser pulse using a hologram computeraided design tool yasuhiro awatsuji, yuu shiuchi, aya komatsu, toshihiro. Pdf holographic optical element has a high diffraction efficiency. Seethrough display combined with holographic display and. Conventional methods of measuring the various parameters of holographic optical elements are tedious for mass production. Holographic optical element has a high diffraction efficiency and a narrowband frequency characteristic, and it has a characteristic that is able to implement several features in a single flat device. Each type of display has advantages for the observer, but they are difficult to combine in a single system. Compared with conventional refractive and reflective optics, vhoes can be thinner and more lightweight and have the potential for being very inexpensive in mass production. I holographic optical elements as scanning lidar telescopes. They are used in tasks such as measuring the spring constant of dna. This book presents a selfcontained treatment of the principles, techniques and applications of optical holography, with particular emphasis on recent developments.
Holographic elements are represented as lenses with very. For example, cgh is used to make holographic optical elements hoe for scanning, splitting, focusing, and, in general, controlling laser light in many optical devices. The holograms have a high reflectance and transmittance and a variable spectral. Computeroriginated aspheric holographic optical elements. This involves combining hoes designed to produce the desired. Holographic optical elements with ledbased optics luminit llc. Mar 12, 2018 the new headsup display uses holographic optical elements to inject an image into the glass, or waveguide left. Dichromated gelatin and photoresists are among the holographic recording materials used in forming holographic optical elements. We have investigated and developed the use of holographic optical elements hoe and holographic transmission gratings for scanning lidar telescopes. Holographic optical element has a high diffraction efficiency and a narrowband frequency characteristic, and it has a characteristic that is able to implement several features in a single flat. Pdf on apr 8, 2019, huiying wu and others published fullcolor holographic optical elements for augmented reality display find, read and cite all the. Holographic 3d imaging methods and applications to cite this article.
Rajan, and became a name to reckon with in high security hologram manufacturing. Especially, the fullcolor hoe has been studied for the wearable device in these days. It relies on the principle of interference to produce an image. Provides an extensive overview of holographic materials including preparation, handling, and processing techniques. Home ebooks field guide to holography holographic optical elements translator disclaimer you have requested a machine translation of selected content from our databases. Scale of zones and lack of organized phasing kinoform. Holographic optical elements are holographic images embedded onto a thin, clear photopolymer film that can be applied to glass or acrylic surfaces. Basic principles and applications of holography spie. Our hoe products includes, holographic reticles holographic transmission grating holographic reflection grating holographic lens holographic diffuser holographic photonic crystal holographic quasi photonic crystal holographic coupler holographic beam splitter holographic beam combiner. Holographic optical elements encoded security holograms with.
Combining optical holograms with interactive computer graphics t oday, many applications for optical holograms exist, including interferometry, copy protection, data storage, and holographic optical elements. Holographic optical elements for freespace clock distribution. Describes the process of design, implementation, and evaluation of a variety of holographic optical elements. We first present issues of wide fov and previous widefov hmds, then present our hmd prototypes and user tests. Besides refractive and reflective components, planar diffractive optical elements are promising for free space optical interconnects.
The light enters the glass and bounces back and forth between its front and back. Direct laser writing of surface reliefs in dry, selfdeveloping. Compound holographic optical element system for splitting. The light enters the glass and bounces back and forth between its front and. In present work a compound holographic optical element system. Transparent holographic optical elements for display applications. The solar radiation is the major renewable source of power. Holographic optical elements encoded security holograms. Threedimensional holographic head mounted display using. G03h 1 introduction since the earliest days of market trade. G03h 1 introduction since the earliest days of market trade, counterfeit goods have existed. The drawback of dcg is its low energetic sensitivity and limited spectral response. Holographic optical elements and application intechopen.
Combining optical holograms with interactive computer. Downie historical introduction although the basic idea may be traced back to the earlier xray diffraction studies of sir w. The next section covers the practical aspects of holography optical systems, light. Holography approach improves heads up displays for planes and. Pdf holographic optical elements and application researchgate. A novel approach is described for the holographic elements used in the. I describe its historical development, its basic principles and some examples of its practical application. These holographic optical elements hoe have the advantage of being cheap due to their simple design, small size, low weight and are easily reproducible by embossing polymer materials. Holographic optical element is widely developed in augmented reality, virtual reality, and threedimensional display application. Security holograms, holographic optical elements encoded holograms, concealed coded holograms, optical security ipc code. The first part deals with the theory of holographic imaging, the characteristics of the reconstructed image and the different types of holograms.
Holographic optical elements optical elements such as lenses, beam splitters, diffraction gratings and filters can be produced by holographic imaging. Integration of light directing holographic optical elements roe into the envelope. By rotating a flat hoe in its own plane with the focal spot on the rotation axis, a very simple and compact conical scanning telescope is possible. Diffractive elements can be singleorder or multiorder patterning resolution x area sbwp is a measure of absolute design freedom phase encoding techniques provide the effective design freedom very. Since then, both artistic and scienti c communities have explored the eld enthusiastically, nding numerous applications in holographic optical elements hoes, optical storage, imaging, and of course, visual. These photopolymer films have potential in photonics applications, such as diffractive optical elements. Holograms and holographic optical elements intentionally. For short lengths free space distribution by holographic optical elements hoe has specific advantages. Diffractive optical elements does utilize diffraction at submicron features. When a light source, such as led, is projected onto the.
As generalized diffractive optical elements, they represent the ultimate in the application of modern computer and microfabrication technologies to the control and manipulation of electromagnetic. Holographic optical elements hoe for high efficiency illumination. In this chapter, the principle and characteristics of the holographic optical elements are described in detail, and few typical holographic optical. Holography, on the other hand does not utilize a lens to form a latent image. Luminit transparent holographic components lightweight and highly efficient, the components use holographic optical elements to direct light without the need for bulky conventional optics. Computergenerated holographic optical tweezer arrays. As the index approaches infinity, the model becomes exact. Friesem we present novel, to our knowledge, methods for the analytical design and recording of planar holographic.
Threedimensional holographic head mounted display using holographic optical element heejae kim, sungkeun lee, meilan piao, nam kim and jaehyeung park. Introduction the holographic screen 1 is a diffractive optical element doe constructed by holographic techniques in order to. As generalized diffractive optical elements, they represent the ultimate in the application of modern computer and microfabrication technologies to the control and manipulation of electromagnetic radiation. However, in recent years, the problem of counterfeit goodsdocuments has attained a serious dimension. General design parameters and image quality of holograms on both planar and spherical. Produced by interfering two or more beams binary optics. Compound holographic optical element system for splitting and. Beside the wellestablished solutions based on refractive optics or surface gratings, volume holographic optical elements vhoes are a very attractive alternative in this field. Efficient multipleimage holographic optical element. For the love of physics walter lewin may 16, 2011 duration. A holographic optical element hoe is an optical element that is produced using holographic imaging processes or principles.
Seethrough display combined with holographic display and maxwellian display using switchable holographic optical element based on liquid lens. Applications of holographic optical elements and systems. Osa describing holographic optical elements as lenses. Holographic optical tweezers use focused light to manipulate multiple objects independently without contact. Includes exercise problems and laboratory experiments. Multilayer photopolymer for broad spectral range holographic optical. Silver halide materials can be processed in such a way that the final hologram will have properties like a dcg hologram. Compared with conventional refractive and reflective optics, vhoes. Oct 23, 2012 for the love of physics walter lewin may 16, 2011 duration. Our hoe products includes, holographic reticles holographic transmission grating holographic reflection grating holographic lens holographic diffuser holographic photonic crystal holographic. The recording wavefronts are defined by analytical phase functions, for example, a two dimensional polynomial expansion. Provides an extensive overview of holographic materials including preparation, handling, and.
In present work a compound holographic optical element system consisting of holographic grating and a holographic lens has been fabricated on a single high resolution holographic plate pfg01. Various types of combiner optics are known to the industry, all with their specific advantages and disadvantages. Pdf fullcolor holographic optical elements for augmented. Holographic elements are represented as lenses with very large indices of refraction and very small curvatures. Combining optical holograms with interactive computer graphics. Phase modulation from surface relief holographic optical element. For example, cgh is used to make holographic optical elements hoe for scanning, splitting, focusing, and, in general, controlling laser light in many optical devices such as a common cd player. Optical holography is a method for storage and displaying a threedimensional image of an object. Holography approach improves heads up displays for planes and cars 12 march 2018 the new headsup display uses holographic optical elements to inject an image into the glass, or waveguide. 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. Holographic optical elements hoes recorded with arbitrary aspheric wavefronts can now be analyzed with a holographic ray tracing design program. A hologram is a photometric emulsion that records interference patterns of coherent light.
Design, fabrication and characterization of computer. Thin combiner optics utilizing volume holographic optical. The recording of each planar holographic element is done. We have pioneered the development of synthetically generated holographic optical components for use at soft xray wavelengths 39, 40, 56, 57.
The prototypes presented in this paper show that the idea can be used for the peripheral areas of the human vision and for widefov hmds. Computeroriginated planar holographic optical elements silviu reinhorn, yaakov amitai, and albert a. Novel optical elements based on volume holography perform unique functions, which have attracted much attention in modern science and engineering. When a light source, such as led, is projected onto the surface, the invisible recorded holographic images come to life. Holographic optical elements for the construction of tandem. In order to combine the solar concentrator and sun tracking functions in a. Computeroriginated planar holographic optical elements. Popular summary holographic optical elements as scanning.
In this chapter, the basic theories and the specific analysis for the fullcolor holographic optical element are explained. Since then, both artistic and scienti c communities have explored the. I describe its historical development, its basic principles and some examples of its practical application in optical systems. Ignetta holographics security holograms and holographic. Holography approach improves heads up displays for planes. Computergenerated optical elements can be recorded quickly, easily, and at low cost. Osa holographic optical elements recorded in silver halide. Among holographic concentrators, volume holographic optical elements vhoes have been proposed for use as solar concentrators. We describe practical methods for creating arbitrary con. Holographic optical elements hoes provide systems of thinfilm optics that could include a variety of functions and have many advantages as optical devices in various research fields. Optical clock distribution is an attractive technique to avoid clock skew in highspeed digital systems. Reflection holograms were developed as spectral beamsplitters for use in solar tandem cell configurations. The first and still the finest prepress house in kerala, process color, kochi, india. We have developed and investigated the use of holographic optical elements hoes and i holographic transssoo gratings for scanning ridiu tekscopes.
1068 726 44 721 74 64 351 319 40 1440 541 490 53 871 235 495 1081 29 243 1054 1001 837 591 119 1112 1549 522 626 1557 279 1543 578 995 473 1011 1499 184 1413 836 145 1279 954 936 706