Mouroulis mcdonald geometrical optics and optical design, oxford, 1997 x 3. Zebase 6 includes a copy of milton laikins book, lens design. Aspheric lenses edmund optics designed, iivi manufactured. It makes it possible for optical and cad users to work in their preferred environments and to share data. Incorporating commercial offtheshelf lenses into your optical designs incorporating commercial offtheshelf lenses into your optical designs.
Some optical design software such as zemax uses the opposite convention in. Optical and mechanical design, verification and matching test results. Zemax system and lens design for sequential systems such as camera lenses. Telecentric lenses are ideal for use in a variety of applications, including metrology, gauging, ccd based measurement, or microlithography. Design and study of lcos miniprojection lens based on zemax. Zebase 6 is a collection of over 600 sequential optical designs in opticstudio format on cd. Imaging fundamentals of fourier optics, physical optical image formation, imaging in zemax 12 04. For example, lets assume youre using an 8 mm diagonal 12 size sensor, and that your aoi is the entire sensor surface. Full technical specifications and reports are available, volume integration is supported by a generous discount structure, and our entire sales and applications engineering staff are knowledgeable about the products and the applications. Leading optical product design software for engineering.
In a telecentric system rays get into the optics only with an almost. Popular optical design programs include zemax, code v, fred, and trace pro. Telecentric lens technology center machine vision store. Establish a generalized 4f optical system with the achromatic lens lal 50.
Lens design with computational software like zemax and codev are the norm. High quality telecentric lenses normally show a very low distortion degree, in the range of 0,1%. Keo scientific designs and builds highly sensitive scientific instrumentation capable of wavelengthresolved imaging of subvisual emissions from the upper. This means that the chief rays oblique rays that pass through the center of the aperture stop are parallel to the optical axis in front of or behind the system, respectively. Although the calculation methods are classic, with the help of a spreadsheet, we will do a stepbystep lens design that makes all of the steps and theory make sense. Creating highaccuracy telecentric lenses for machine vision systems machine vision is the technology and process by which machines automatically inspect and analyze. The custom design of a telecentric lens requires the use of ray tracing software such as zemax as well a mechanical design software to create the lens element mechanics and lens barrel. Lighttools system and component design for nonsequential nonimaging designs such as projector collimators and led light shapers. Using a parametric userdefined surface, our solution makes the analysis and optimization of diffractive lenses possible directly inside optical design software.
In this article, we discuss three different methods of making a lens that is telecentric. A method is presented for the calculation of paraxial design parameters of a doublesided telecentric zoom lens with easy variation of the magnification range. Image space telecentric lenses have their exit pupil located at infinity. Object space telecentric 2 properties of optical systems i aperture data in zemax. Telecentric lenses are designed to have a constant magnification. Design imaging optics, lighting and illumination systems, and laser systems all. Frequently asked questions about optics design optics for hire. Which coefficients should i use to model the optical ray tracing. Field lenses, stop position influence, aspheres and higher orders, principles of glass. Edmund optics telecentric lenses are available with a range of features for a variety of machine vision or inspection applications. In a presentation delivered at envision, keo scientific senior optical designer dr.
We have set new standards in bi telecentric technology by continuously enhancing optical performances, quality control and ease of use of telecentric lenses. I hope that more lens designers including myself can detach from plowing through the computational nature of optical lens design software and really do some deep thinking, at least from time to time. Winlens is a powerful and easytouse simulation program for optical imaging systems. Zemax delivers design software, training, and support services that set the highest standards for the optical and illumination industries. Solution of exercises lecture optical design with zemax. It consists of only four spherical lenses and its tube length is less than 100 mm. Simulation of relieftype diffractive lenses in zemax. Lensmechanix zemax, optical product design software. Is zemax the best program for the optical simulations. The custom design of a telecentric lens requires the use of ray tracing software.
Bi telecentric technology we have set new standards in bi telecentric technology by constantly improving optical performances, quality control procedures and the ease of use of telecentric lenses. Free version of the winlens3d optical design package, which provides serious design and analysis tools for optical engineer, student or designer. Types of telecentric lenses in order to achieve a telecentric lens design, all of the chief rays rays from an offaxis point that pass through the center of the aperture stop have to be parallel to the optical axis in either image space or object space, or both. Determine the necessary magnification factor by dividing the sensor areaofinterest aoi by the desired field of view.
Lens design, gives insight into the engineering problems of each lens design type and practical solutions that are expensive to discover independently. For such systems, a telecentric lens allows the highest possible accuracy to be obtained. Optical design for personal computers powerful, easy to use optical design software from sky scientific can help you develop designs from a single lens or. These products achieve the highest optical performances available on the market. Here are five optical design requirements, and how software like opticstudio helps optical engineers satisfy them. Optical design requirements for handheld imaging devices. We set our design goals to match customer expectations on performance and price. More info on zemax get to a qualified design faster. The above figure illustrates the optical design of one of the foreoptics. Image space telecentric lenses are useful for a variety of applications, e. Elento of radiant zemax notes that to improve the speed of design, opticstudio performs smart data caching so that lengthy calculations are only recomputed when. Tips to install your software, activate your license, and start using your zemax tools.
Depending on requirements such as wavelength range, field of view and resolution a telecentric design will have different quantity, size and material used for the lens elements. Nowadays, high accuracy and performance of critical to many machine vision system, a method that use telecentric lens allows highest possible accuracy to be obtained. In this article, we discuss three different methods of making a lens that is telecentric in image space in opticstudio. Lensmechanix is software for mechanical engineers who design housing for optical products in cad. As the industryleading optical design software, opticstudio is used across a wide variety of industries, from aerospace and astronomy, to automotive, biomedical research, consumer electronics, machine vision, and more. This guide will tackle how lens design was done before optical design software on computers were invented, which i will call the classic method for lens design.
Explore design principles such as bending, symmetry, stop shift, and lens splitting. Therefore, if you design a telecentric lens system with it, you will get a perfect telecentric system and so. We work with zemax and essential macleod simulationoptimization software. Nowadays, high accuracy and performance of critical to many machine vision system, a method that use telecentric lens. The design of double telecentric lens with large aperture based on. By the aid of optical engineering software zemax, a telecentric optical system is designed, which uses a 1 inch ccd image sensor with 5. Selection of a telecentric lens is straightforward.
Apply these principles and knowledge to various optical systems with tolerancing analysis. Matlab sometimes optical problems require some math intensive modeling. The ability to quickly perform repeatable, high accuracy measurements is critical to maximize the performance of many machine vision systems. Our guiding principle simple works better leads to the smoothest integration between optics and mechanics. Optical design of a new folding scanning system in mems. This section discusses the unique performance characteristics of telecentric lenses and how telecentricity can. There are several different types of diameters in zemax.
Telecentric lenses are compound lenses with entrance or exit pupils at infinity. Theia technologies offers optical engineering design services along with highend lens manufacturing. Opto engineering telecentric lenses represents our core business. Employing the optical design software zemax, a folding scanning optical system based on mems mirror is designed thereafter. Ideal as well as educational tool for training in technical optics. If you enter an areaofinterest aoi smaller than the full sensor size, the calculator will assume the aoi is centered on the sensor, and that vignetting is acceptable outside the aoi. Consultancies on technologies for production and testing. Telecentric lenses tutorial resources opto engineering. Implementation was carried out in zemax in the form of a swift windows dynamic link library extension using an approximative, noniterative algorithm. This tool swaps out lenses in a design to the nearest equivalent candidate out of a. Learn userdefined merit functions, and learn and practice advanced lens designs for photographic systems, telecentric lenses. Easily calculate telecentric magnification and field of view. Machine vision is the technology and process by which machines automatically inspect and analyze.
Kingslake lens design fundamentals, spie press, 2010 x 2. Tutorial of telecentric lens haosheng hu college of optical sciences university of arizona december 6, 2016 introduction. Optical design and custom lens manufacturing services. Tutorial of telecentric lens university of arizona. Creating highaccuracy telecentric lenses for machine vision systems. Zemax import aspheric coeffs were wrong if system had non unity scale factor, e. How to make a lens telecentric in image space a lens which is telecentric in image space has its exit pupil at infinity, and so the chief ray has zero angle with respect to the optical axis as it passes through the exit pupil and arrives at the image plane. This article first introduced aberration theory and the zemax optical design software, and then adopted structure of the telecentric retrofocus lens according to aberration theory and design experience of the projection lens. Lcos liquid crystal on silicon projection technology is one of the development direction of miniprojection at present. Creating highaccuracy telecentric lenses for machine.
If the stop is located in the intermediate focal point, the system is both sided telecentric. Linos offers a software package for optic design, qualified for professionals and beginners. The prepare for opticsbuilder feature inside of opticstudio ensures that all supporting data is grouped with the optical design. Optical imaging technologies for machine vision opto. The designed ftheta lens is compact with the simple structure and large working area.
Object space and image space are the two types of telecentricity. Craig unick discussed incorporating commercial offtheshelf cots lenses into optical system designs. A telecentric lens is a compound lens that has its entrance or exit pupil at infinity. Modeling a lens that is telecentric in image space zemax. Optimal lens design and use in laserscanning microscopy. Zbd file loads all necessary information into the cad software. Properties of optical systems i 20121023 herbert gross. Understand optical systems with first and third, higher order analysis and aberration theory. Pointofcare or pointofprocedure imaging devices have different requirements than the typical mri, ct, or xray machines. These refer to the exit and entrance pupil locations of an optical system. The opticstudio optical design software by radiant zemax, mentioned earlier, is an example of an optical design package that has illuminationsystem design capabilities built in.
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