An injectionmolded binary optical element produced according to the method of the present invention provides an injection molded optical element which diffracts light. Fabrication of transmissive diffractive optical elements for the mid. Highly efficient diffractive optical elements does can also be realized using modern microfabrication technologies. Dtub15 direct search method for the computer design of holograms for the. Title rigorous analysis and design of diffractive optical elements analysis and design of complex diffractive optical elements does with rigorous electromagnetic diffraction models is very challenging because of the mathematical complexity of these models. A method for calculating the transmittance function is shown and the kinoform, a special form of the conventional cgh, is introduced. Dtuc7 diffractive optical elements for laser and fiber mode selection, victor a. Cn102735428b measurement device and measurement method for. Diffractive optical elements doe 15 are in fact computer generated. The authors made the aberration analysis of diffractive optical element doe, conducted. Computer aided design and modern fabrication methods give access to optical functions which are often not realisable by one single conventional bulk optical element. The article investigates the possibility of using diffractive optical elements on an example of the kinoform in the optical coherence tomography oct. Computer design of diffractive optics download books pdf.
This book supplements the available literature on diffractive optical elements does by. Edt the first inclusive book on the cuttingedge field of modern optics and its applicationsfor the first time, all the major aspects of designing planar does are covered in one book, comprised of original methods developed by experts at the russian academy of. Computer design of diffractive optics sciencedirect. Diffractive optical elements are ultrathin optical components required for a. Two existing methods were combined to improve the reconstructed image of a cgh. Doe brochure 8 seiter outside rev 1 holoeye photonics ag. This paper investigates the design and fabrication of diffractive optical elements does for generating the light field with uniformly distributed speckles. Simultaneous multiple surface design method for diffractive.
The theoretical aspects underpinning diffractive optics are initially explored, including the main equations in diffraction theory and diffractive optical transformations. Jan 01, 2020 diffractive optical element generation generating diffractive optical elements doe is an important problem in field of optical data processing 2931. Design and fabrication of diffractive optical elements with matlab. By using the measurement device and the measurement method, not only can the farfield diffraction pattern generated by the diffractive optical element be measured directly, but also the measurement of the energy utilization rate, the zeroorder diffraction efficiency and the highorder diffraction efficiency of the diffractive optical element. An asymptotic method for solving problems of diffraction by.
The contributors also detail the three key approaches to designing phase does. The main focus was on the optimal design of computer generated holograms cghs. Does have been investigatedintensively in the optics community,like extendingthe depth of. The design method is based on an analytic raytracing procedure for minimizing aberrations. Effect of super computer parallelization on the simulation time. The diffractive achromatull spectrum computational imaging. Methods for solving thedirect diffractionproblem 19 1. Pdf application of diffractive optical elements in laser.
Purchase computer design of diffractive optics 1st edition. Modeling, design and fabrication of diffractive optical elements. The application of diffractive optical elements in the. Differentschemes ofsolving differential equations 19 1. In this research, two related research topics were investigated. The efforts were directed on development of both methods for doe fabrication and new types of these elements, and optical devices on their basis. The article gives a brief overview of modern methods of research in the oct, the expediency of development hyperchromatic lenses for spectral oct systems.
Design and fabrication of diffractive optical elements with. A hybrid diffractive optical element design algorithm combining. Computer design of diffractive optics 1st edition elsevier. Volkov, methods for computer design of diffractive optical elements wiley, 2002. Computergenerated stratified diffractive optical elements osa. Made by staircases that approximate the ideal surface relief fresnel zone plate. With the rapid development of computer hardware and the. Method for reproducing holograms, kinoforms, diffractive optical elements and microstructures. Most optimization in rsoft cad provides a convenient method to optimize gratings. Thefinite element methodfor solvingintegral equations 21 references 24 2 diffractive opticaltransformations 25 2. Diffractive optics involves the manipulation of light using diffractive optical elements does. The simultaneous multiple surface sms design method is extended to include design of diffractive optical surfaces besides refractive and reflective ones.
Using inhouse developed as well as commercially available stateoftheart software tools and algorithms, appropriate simulation methods paraxial or rigorous electromagnetic are used for optimization of the doe design. Inverse design of diffractive optical elements using steptransition. The first one is the use of scalar diffraction theory for the purpose of simulating and implementing diffractive optical elements does. The new method combines the optimal decimationinfrequency iterative interlacing technique odifiit with the lohmann coding scheme. Design and verification of diffractive optical elements for. Methods for computer design of diffractive optical elements wiley. Ersoy three new techniques are proposed for the design of optical devices for various applications in optical communications and networking. Machine learning methods for digital holography and. Diffractive optical elements for capturing and controlled. Deep learning has been transforming our ability to execute advanced inference tasks using computers. The breadth of methods for computer design of diffractive optical elements covers doe production, beginning from the design techniques and the software, to the fabrication technology, experimental studies, and testing of does, including all major doe application fields and doe types. In this dissertation, a novel rigorous analysis method for stacked rotated grating. Design of diffractive optical elements for augmentedvirtual.
We consider the design of diffractive optical elements doe using two alternative methods one iterative and one, noniterative. Basically, there are two methods for designing does, one is a. Diffractive optical elements for differential interference. Dec 08, 2020 various issues of creation of diffractive optical elements transforming one laser beam with small divergence to a matrix of converging beams with a diffraction size of focused spots in the plane. Design and fabrication aspects of continuousrelief. In previous papers a method for eliminating the chromatic aberration of a doe for two different wavelengths was presented. The optical projection using speckles is one of the structured light methods that have been applied to threedimensional 3d range sensors. Oct 24, 2018 a diffractive optical element doe uses thin micro. A particular pattern that produces amplitude modulation. Integrating diffractive imaging elements and computational methods. Diffraction efficiencies of the periodic diffraction gratings can be calculated by numerical analysis such as the rigorous coupled wave analysis rcwa method. Doe can be used as focusing elements 32, for creating 3dscenes 33, for pattern recognition 3435, and etc. Commonly iterative methods such as gerchbergasaxton 36 and fienup 37.
Optimal design and fabrication of fine diffractive optical elements. Alloptical machine learning using diffractive deep neural. Development of precision circular laser writing system clws 3 and technology of direct laser thermochemical writing optimized for doe fabrication 4 have allowed to start manufacturing of. Multifocal diffractive lens generating several fixed foci at. It can form the beam in multiple divergent points and a flat top rectangle or line beam. In fact, the zone plates zps, which can be now considered a well established focusing element for xrays, were invented. Computeraided design of diffractive optical elements. The dot array can be applied to achieve threedimensional imaging. Computer optics and nanophotonics 53 information technology and nanotechnology itnt2015 diffractive optical elements for capturing and controlled rotation of microobjects ganchevskaya s. While the iterative methods based on alternating constraints between the source and field plane are wellestablished and popular tools for doe design, the literature lacks the works that view these iterative methods within a strict mathematical framework. Pdf design of diffractive optical elements for multiple. Abstract the original design method for diffractive optical elements does is limited to cases of smallangle diffraction due to the fresnel or fraunhofer. Diffractive optics and lens design poster session, exhibit hall south.
Iteractive methods for diffractive optical elements computation 9780748406340 by soifer, victor a kotlar, v. Design and optimization of optical diffractive elements using. Computer design of diffractive optics provides an authoritative guide to the principles and applications of computer designed diffractive optics. Produced by interfering two or more beams binary optics. Calculation of diffractive optical elements in geometrical optics approximation.
Us5538674a method for reproducing holograms, kinoforms. Jan 25, 2002 this chapter discusses the design and implementation of the computer. Design of diffractive optical elements for multiple wavelengths yoel arieli, salman noach, shmuel ozeri, and naftali eisenberg a method for producing diffractive optical elements does. This paper presents methods for designing and recording optimal computer generated diffractive optical elements. The possibilities of manufacturing of diffraction optical elements doe, using the caroline 15 pe plasmaetching machine were considered. These elements offer optimum design freedom and established fabrication technology. In principle, one can use a classical method for the fabrication of the single does of a computer generated sdoe and arrange the single does in parallel. Osa design of diffractive optical element projector for a. Spherically based approach to design diffractive optical elements. Pdf design and fabrication of diffractive optical elements. Using the phaseshift properties of diffractive elements as an extra degree of freedom, two rays for each. Based on the principles of computer generated holograms, the iterative fourier transform. Design of diffractive optical elements for multiple wavelengths osa. Methods for computer design of diffractive optical elements.
Various issues of creation of diffractive optical elements transforming one laser beam with small divergence to a matrix of converging beams with a diffraction size of focused spots in the plane. Methods for computer design of diffractive optical elements by soifer, victor a. Computationalimaging using lightweight diffractive. This method involves the simultaneous and direct no optimization calculation of diffractive and refractivereflective surfaces. Here we achieved the structured light patterns of a pseudorandom dot array by a single diffractive optical element. Computer design of diffractive optics book oreilly.
Pdf design, analysis, and optimization of diffractive. New techniques for the design of diffractive optical devices. Here we introduce a physical mechanism to perform machine learning by demonstrating an all optical diffractive deep neural network d 2 nn architecture that can implement various functions following the deep learningbased design of passive diffractive layers that work collectively. Pdf a novel method for the design of diffractive optical elements. Sep 30, 2003 a novel method to design diffractive optical elements, based on the spherical wave propagation and superposition, is presented in this paper. First, the pseudorandom dot array was generated by the proposed improved encoding methods, which are an improved formula method based encoding algorithm and an improved enumeration method based encoding algorithm. Request pdf computer aided design of diffractive optical elements a number of iterative algorithms for calculating kinoforms are discussed.
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