Simulation of relieftype diffractive lenses in zemax. Incorporating commercial offtheshelf lenses into your optical designs incorporating commercial offtheshelf lenses into your optical designs. Consultancies on technologies for production and testing. Therefore, if you design a telecentric lens system with it, you will get a perfect telecentric system and so. Solution of exercises lecture optical design with zemax. Mouroulis mcdonald geometrical optics and optical design, oxford, 1997 x 3.
Opto engineering telecentric lenses represents our core business. We have worked with several large contractors and companies including bae, northrop grumman, and large consumer electronics companies to design lenses to meet their specifications. A telecentric lens is a compound lens that has its entrance or exit pupil at infinity. 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 a presentation delivered at envision, keo scientific senior optical designer dr. Lens design with computational software like zemax and codev are the norm. Field lenses, stop position influence, aspheres and higher orders, principles of glass. Explore design principles such as bending, symmetry, stop shift, and lens splitting. Tips to install your software, activate your license, and start using your zemax tools. The designed ftheta lens is compact with the simple structure and large working area. These products achieve the highest optical performances available on the market.
Theia technologies offers optical engineering design services along with highend lens manufacturing. 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. Craig unick discussed incorporating commercial offtheshelf cots lenses into optical system designs. Popular optical design programs include zemax, code v, fred, and trace pro.
Kingslake lens design fundamentals, spie press, 2010 x 2. Imaging fundamentals of fourier optics, physical optical image formation, imaging in zemax 12 04. Creating highaccuracy telecentric lenses for machine vision systems. High quality telecentric lenses normally show a very low distortion degree, in the range of 0,1%. Lighttools system and component design for nonsequential nonimaging designs such as projector collimators and led light shapers. Correction i symmetry principle, lens bending, correcting spherical aberration, coma, stop. Aspheric lenses edmund optics designed, iivi manufactured. Modeling a lens that is telecentric in image space zemax. Easily calculate telecentric magnification and field of view. 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. By the aid of optical engineering software zemax, a telecentric optical system is designed, which uses a 1 inch ccd image sensor with 5.
Object space and image space are the two types of telecentricity. Optical and mechanical design, verification and matching test results. In a telecentric system rays get into the optics only with an almost. A method is presented for the calculation of paraxial design parameters of a doublesided telecentric zoom lens with easy variation of the magnification range.
Tutorial of telecentric lens haosheng hu college of optical sciences university of arizona december 6, 2016 introduction. Creating highaccuracy telecentric lenses for machine. Some optical design software such as zemax uses the opposite convention in. Telecentric lens technology center machine vision store. 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. Telecentric lenses are designed to have a constant magnification. These refer to the exit and entrance pupil locations of an optical system. Our guiding principle simple works better leads to the smoothest integration between optics and mechanics. Establish a generalized 4f optical system with the achromatic lens lal 50.
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. Zebase 6 includes a copy of milton laikins book, lens design. Design and study of lcos miniprojection lens based on zemax. Understand optical systems with first and third, higher order analysis and aberration theory. Optical imaging technologies for machine vision opto. Machine vision is the technology and process by which machines automatically inspect and analyze. Image space telecentric lenses have their exit pupil located at infinity. Telecentric lenses tutorial resources opto engineering.
If the stop is located in the intermediate focal point, the system is both sided telecentric. Frequently asked questions about optics design optics for hire. 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. Learn userdefined merit functions, and learn and practice advanced lens designs for photographic systems, telecentric lenses. It consists of only four spherical lenses and its tube length is less than 100 mm.
Object space telecentric 2 properties of optical systems i aperture data in zemax. This tool swaps out lenses in a design to the nearest equivalent candidate out of a. Telecentric lenses with outstanding optical performance. Tutorial of telecentric lens university of arizona.
Telecentric lenses are ideal for use in a variety of applications, including metrology, gauging, ccd based measurement, or microlithography. Zemax system and lens design for sequential systems such as camera lenses. Implementation was carried out in zemax in the form of a swift windows dynamic link library extension using an approximative, noniterative algorithm. Employing the optical design software zemax, a folding scanning optical system based on mems mirror is designed thereafter. 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. Is zemax the best program for the optical simulations. Nowadays, high accuracy and performance of critical to many machine vision system, a method that use telecentric lens. Lensmechanix is software for mechanical engineers who design housing for optical products in cad. Ideal as well as educational tool for training in technical optics. 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. 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.
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. Keo scientific designs and builds highly sensitive scientific instrumentation capable of wavelengthresolved imaging of subvisual emissions from the upper. 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. Zemax delivers design software, training, and support services that set the highest standards for the optical and illumination industries. We have set new standards in bi telecentric technology by continuously enhancing optical performances, quality control and ease of use of telecentric lenses. Selection of a telecentric lens is straightforward. Determine the necessary magnification factor by dividing the sensor areaofinterest aoi by the desired field of view. Which coefficients should i use to model the optical ray tracing. Optimal lens design and use in laserscanning microscopy. Free version of the winlens3d optical design package, which provides serious design and analysis tools for optical engineer, student or designer. Apply these principles and knowledge to various optical systems with tolerancing analysis.
Linos offers a software package for optic design, qualified for professionals and beginners. Image space telecentric lenses are useful for a variety of applications, e. There are several different types of diameters in zemax. For example, lets assume youre using an 8 mm diagonal 12 size sensor, and that your aoi is the entire sensor surface.
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. 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. 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. More info on zemax get to a qualified design faster. Zbd file loads all necessary information into the cad software. Winlens is a powerful and easytouse simulation program for optical imaging systems. Zebase 6 is a collection of over 600 sequential optical designs in opticstudio format on cd. Optical design requirements for handheld imaging devices. Lcos liquid crystal on silicon projection technology is one of the development direction of miniprojection at present. Matlab sometimes optical problems require some math intensive modeling. The design of double telecentric lens with large aperture based on.
Pointofcare or pointofprocedure imaging devices have different requirements than the typical mri, ct, or xray machines. Lensmechanix zemax, optical product design software. Edmund optics telecentric lenses are available with a range of features for a variety of machine vision or inspection applications. Creating highaccuracy telecentric lenses for machine vision systems machine vision is the technology and process by which machines automatically inspect and analyze.
The above figure illustrates the optical design of one of the foreoptics. The custom design of a telecentric lens requires the use of ray tracing software. 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. This section discusses the unique performance characteristics of telecentric lenses and how telecentricity can. Telecentric lenses are compound lenses with entrance or exit pupils at infinity. We work with zemax and essential macleod simulationoptimization software. Zemax import aspheric coeffs were wrong if system had non unity scale factor, e.
We set our design goals to match customer expectations on performance and price. Design imaging optics, lighting and illumination systems, and laser systems all. The ability to quickly perform repeatable, high accuracy measurements is critical to maximize the performance of many machine vision systems. 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. It makes it possible for optical and cad users to work in their preferred environments and to share data. 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.
Using a parametric userdefined surface, our solution makes the analysis and optimization of diffractive lenses possible directly inside optical design software. Lens design, gives insight into the engineering problems of each lens design type and practical solutions that are expensive to discover independently. Optical design and custom lens manufacturing services. For such systems, a telecentric lens allows the highest possible accuracy to be obtained.
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