Such lenses are often used as condensors in overhead projectors, spotlights and signal lamps. Design and machining of fresnel solar concentrator surfaces 365 figure 15 optical simulation. This video presentation showcases the design and manufacturing process of historic fresnel lens reproductions use to illuminate lighthouse in the mid to late 1800s. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and. Basic heat transfer analysis of each application decides its solar energy requirement. Pdf applicationbased design of the fresnel lens solar. The structure of the lens is designed firstly by using matlab program for every sublens. The novel linear fresnel lens is designed in the matlab program and then the data from matlab are applied to lighttools tm to draw the lens in three dimensions 3d. Then, the structure of lenses is appreciated by ray. Optometrika file exchange matlab central mathworks. Fresnel lens tracing is somewhat slower due to looping through the fresnel cones describing the lens. Design of curved fresnel lens with high performance. The afs nikkor 300mm f4e pf ed vr is a fixed lens with a focal length of 300mm and maximum aperture f4, this is the first nikkor interchangeable lens to feature the proprietary phase fresnel.
The gtha incorporated in matlab optimizes the concentrator characteristics to secure this. With this background, in this paper, a more realistic optimization method is proposed to design a high concentration fresnel lens with a small aspect ratio. In one simulation, the electromagnetic waves, frequency domain interface computes the electric field in the fresnel lens and the surrounding air domain extended to the focal plane. A novel technique to design flat fresnel lens with uniform. Pdf simulation of photovoltaic concentration with fresnel lens. Custom pmma acrylic fresnel lenses antireflective coated. Find the fresnel cosine integral function for these numbers. Fresnel cosine integral function for numeric and symbolic input arguments. Using matlab for the design and evaluation of the fresnel.
Lenses of general shapes can be modeled, with light rays. Fresnel lens design software precision engineering. This tutorial assumes you know how to setup and run a photopia analysis inside of solidworks. As shown in the figure below, this has the refracting effect of the lens without its thickness or weight. Before fresnel, buffon and condorcet proposed a similar design, as a way to make large burning lenses. It is also a useful tutorial on defining complex objects in general. Optical design using fresnel lenses basic principles and some practical examples the fresnel lens can be used in a wide variety of applications. Each prism represents the slope of the lens surface, but without the material of the full body of the conventional singlet. This model computes the reflection and transmission coefficients and compares to the fresnel equations. Eventually, molten glass was poured into molds, but it was only with the development of opticalquality plastics and injectionmolding technology in the 20 thcentury that the use of fresnel lenses in many industrial and commercial applications became practical.
The lens shape is constructed in the matlab program with. A fresnel lens focal length of 100mm, made of pmma. Complementary zone plates as shown in figure 2 give the same diffraction pattern. Save the project by selecting file save as from the main menu, naming the project fresnel lens. Design of curved fresnel lens with high performance creating. We can also supply a range of custom cylindrical fresnel lenses.
Matlab program is used to design the input and the output surfaces of the lens. The input surface and the output surface are independent to each other in. Our optical engineers and project managers in plastics processing are capable of translating your photometric specifications into part design to. Fresnel lens simple english wikipedia, the free encyclopedia. Scale of zones is large and the wavefront segments are not rearranged to recreate. The design process of fresnel lens was performed using matlab program. Freeform optics design of primary lens for uniform irradiance. Also, this method can be used to design concentrated photovoltaic cpv system without secondary optics lens soe. The focal point of the lens can be studied with fdtd far field projection functions. Compared to earlier lenses, the fresnel lens is much thinner. The false color view and 3d view of the fresnel lens are shown in fig.
In this daylighting system, the novel design of linear fresnel lens significantly improves the uniformity of collector and distributor. In this paper, the design of a curved fresnel lens applying to the concentrator photovoltaic system is proposed by using the edge. Refractive index and transmission tables for 112 sellmeier and. Topics include optical design, optical engineering, illumination, laser, optical materials, thin film coatings, and many more subjects needed to build and analyze complex optical systems. Matlab code has been developed both for designing several types of focusing fresnel lenses and for analyzing the diffracted optical field at the image plane. Design of fresnel lens optical components coursera. This article describes how to model complex fresnel lenses, in which each groove may have different defining data. Design of a chmsl based on fresnel lens pdf free download. In a cpv system, the poe is usually a fresnel lens, which is used to collect and guide. A plane electromagnetic wave propagating through free space is incident at an angle upon an infinite dielectric medium.
I adapted this to test fresnel prisms rainbow concentrators and it. Two types of nonimaging fresnel lenses, a spotflat lens and a domeshaped lens, are designed through a statistical algorithm incorporated in matlab. The temperature dependence of refractive index caused thermal effects which had rarely been taken into account in the design stage of fresnel lens. Using matlab for the design and evaluation of the fresnel lens based solar concentrator author. Fresnel lens fresnel lenses are constructed such that the curved surface of a lens is collapsed in annular zones to a thin plate.
Lenses of general shapes can be modeled, with light rays entering arbitrary angles. Dimensional parameters for the design of concentrating modular fresnel lenses are depicted in fig. Zoom out by right clicking your mouse and selecting zooming zoom out or just click on the zoom out button on the toolbar. Our capacity to create custom fresnel lenses in optical quality pmma and our cutting edge technical skills have made us a major player on this market for many years to implement their projects, our customers are supported by our engineering office.
A fresnel lens can be made much thinner than a comparable conventional lens, in some cases taking the form of a flat sheet. Custom precision grade fresnel pmma lenses are ideal for simulators and projection systems. Single fresnel lens design constraints lens diameter 32 mm outer edge of lens additional 2 mm lip to attach to casing field image 22. It takes about 2 seconds to trace 100,000 rays through an external lens and the human eye 8 optical surfaces on a 3 ghz intel core i7 desktop. Beginner tutorial 4 designing a fresnel lens with the. Novel design of primary optical elements based on a linear. The gtha incorporated in matlab optimizes the concentrator. Design and machining of fresnel solar concentrator surfaces. The concept of phasematching was explored as a technique of ensuring that light waves from the zone. Further, a design chart for fresnel lens with spherical facets is developed to determine aperture radius and design angle for a given focal length and focus size. Fresnel lens a fresnel lens reduces the amount of bulk glass.
The structure of the linear fresnel lenses is designed by using matlab. Since fresnel lens is a rotational symmetric structure with the optical axis as the center. The equation model is made into a block diagram, then simulated by the input output function in simulink matlab. The design allows the construction of lenses of large aperture and short focal length without the mass and volume of material that would be required by a lens of conventional design. The first fresnel lenses were made by tediously grinding and polishing glass by hand. In addition, the blocks can be indexed as i, j, where i.
Well consider a fresnel lens based on a simple spherical design. The lens has a radius of curvature of 100cm and a diameter of 4. The structure of the novel fresnel lens consisting of two surfaces placed perpendicular to each other. Daylighting system based on novel design of linear fresnel. Due to the large size of this structure, we must use a 2d approximation of the structure. If youre going to design and build a fresnel lens, pretty much your first question is where do the various periods of the diffraction grating go, and how small a feature do i have to make, to make a particular lens.
The ray tracing technique is used to estimate the performance of the design process. Fresnel lens design method combining equalwidth and equalheight of grooves is firstly proposed in this paper based on the principle of focused spot maximum energy. Besides, geometric and chromatic aberrations like in any standard optical system occurs if the curvature of fresnel lens surface is not optimised or aspherised. Ray tracing technique has been used to optimize the structure of.
Radial fresnel lenses are concentric circles and cylindrical fresnel lenses are rectangular 2,1517. A binary amplitude fresnel lens consists of alternating opaque and transparent zones, see fig. A novel genetically themed hierarchical algorithm gtha has been investigated to design fresnel lens solar concentrators that match with the distinct energy input and spatial geometry of various thermal applications. Therefore, it can help to improve the performance of the daylighting system. Links on optical design and engineering the purpose of this site is to provide a comprehensive list of links related to optics and optical simulation in general.
Proceedings volume 11104, current developments in lens design and optical. In this tutorial you will design a narrow beam fresnel lens using the parametric optical design tools podt and the cree cxb18303000k cob led. Design and fabrication of diffractive optical elements. Fresnel s equations for reflection and transmission incident, transmitted, and reflected beams boundary conditions. Pdf applicationbased design of the fresnel lens solar concentrator. How to make a fresnel lens the ideal refracting lens has a parabolic shape but this is impractical to make. There is a noticeable increase in height of the concentric rings, moving outward from the center of this particular fresnel lens. In this paper, we propose a novel technique to design flat fresnel lens to achieve big concentration ratio, high uniform irradiance distribution while keeping fnumber small using both refraction and total internal reflection tir phenomena.
Applicationbased design of the fresnel lens solar concentrator. Optometrika matlab library implements analytical and iterative ray tracing approximation to. Simulation of photovoltaic concentration with fresnel lens. Pdf design of curved fresnel lens with high performance. It was written using matlab classes and is fully vectorized. Designing the optimal fresnel lenses by using zemax software. The flow chart of optimum calculation in matlab program. In zemax software with the lens width definition, it is possible to design the fresnel lens in radial and cylindrical modes, it is obvious that the width of the radial fresnel lens is zero 10,11. The design allows the construction of lenses of large aperture and short focal length without the weight and volume of material that would be required in conventional lens design. Fresnel lens tracing is somewhat slower due to looping through the fresnel cones describing the lens surface. Fresnel lens tracing is somewhat slower due to looping through the fresnel cones describing the.421 28 243 1367 158 1255 608 1351 698 732 1107 466 419 1265 740 1468 451 588 281 1249 1522 470 1397 105 1556 1229 431 1375 179 1310 804 996 1103 433 496 1404 628 852 79 456 807 619 285