Thorlabs specializes in the building blocks for laser and fiber optic systems. I started to use zemax 10 years ago for laser application such as collimating lens, beam expander and scan lenses. In general, designs that use collimating secondary optics are more efficient, and produce a more uniform. A novel freeform lens design for collimating uv light emitted. Parameters selected for the simulation are listed in table 3. Beyond its ability to manufacture collimating or focusing lens systems idil calculates optics by using zemax industry standard optical system design software. In optical terms this is that the sources optical grasp. The speos lens system importer can bring any optical sensor design from zemax s industryleading optical design software, opticstudio, into speos simulation software. An optical collimator consists of a tube containing a convex lens at one end and an adjustable aperture at the other, the aperture being in the focal plane of the lens.
Designing a planoconvex aspheric lens for fiber optics. The collimating lens is imported in the software along with uvled ray file and simulations are performed for both point source and finite area of uvled source to check the performance of the lens. To narrow can mean either to cause the directions of motion to become more aligned in a specific direction i. Molded glass aspheric lens laser collimating lensesid. Secondary optics design considerations for superflux leds. Exercises lecture optical design with zemax part 4 4. Dslr oled viewfinder optics, lcos digital rifle scope, automotive hud, offaxis miniature hmd projector with free form lenses, very wide angle. This paper presents the design of an efficient collimating optical system for an extended light source, namely a highbrightness high divergence light emitting diode led, sized 1x1mm, and viewing angle of.
Design and implementation of optical system for placidodisc. How to optimize nonsequential optical systems zemax. The resulting lens often has a square or rectangular crosssection with flat edges, allowing it to be mounted flat with fewer mechanical components for a much smaller footprint. By using this method, a highly collimating lens with led chip size of 1. The collimating lens is imported in the software along with uvled ray file and simulations are performed for both point source and. In this tutorial, you learn how to package, analyze, and validate a sample lens system in lensmechanix. To convert divergent beams of light into a parallel beam, a collimating lens is needed. What is lighttools lighttools is a 3d optical design software that supports virtual prototyping, simulation. Zemax delivers design software, training, and support services that set the highest standards for the optical and illumination industries. Illumination introduction in illumination, simple photometry of optical systems, nonsequential raytrace, illumination in zemax. A novel freeform lens design for collimating uv light emitted from a led with large divergent angle.
The focal distance at the specified wavelength of 785 nm is 9. Handbook of optical systems, vol 15, wiley, 2005 10. Smith modern optical engineering, graw hill, 2000 x 7. Second, the imaging lens structure is designed and optimized by zemax software. Optical lens design and fiber optics modeling expert cecon. Freeform lens design for led collimating illumination. Various optical design codes allow for accurate modeling of these incoherent light sources and here we use zemax optical design software. Dec 07, 2016 leds illuminate over a wide angular range, and this can be a problem when you need a narrow angular range for things like flashlights. The c171tmdb mounted or 354171b unmounted aspheric lenses have a focal length of 6. According to lumotive senior director of engineering apurva jain, cylindrical optics are generally used for fast and slow axis collimation of edge emitting semiconductor lasers.
Zemax lens catalog rohs compliant 200295eg version may 16, 2019 valid for an emitterheight of 1m and no smile of the laser diode with bottom tab gap 01mm general description. The design lies in a catadioptric rotationally symmetrical system, which modeling and optimization has been done by specific optical design software, zemax, and its development was based on. Optics tutorial 2 lens and focusing basics youtube. Zemaxs software programs improve the speed and accuracy of optical product design by enabling engineering teams to simulate how light travels through the complete optomechanical system before. Im using it to collimate a laser into some fiberoptic cables for ringgyro experiments. Liliana ruiz diaz lighttools tutorial p a g e 5 9 2. In general, designs that use collimating secondary optics are more efficient, and produce a more uniform lit appearance. Design and optimization of a collimating optical system for high divergence led light sources. The fiber launch platforms are ideal for coupling a free space laser into a single mode, multimode, or polarizationmaintaining fiber. That means, ensuring the lens is deadon at infinity.
Exercises lecture optical design with zemax part 4 4 aberrations 4. In order to improve collimation you can copy the bfl from the lens property windows and change the zaxis position of the lens to match this number. Collimation coupling fiberports can be used to provide a stable platform for coupling light into and out of fcpc, fcapc, or sma terminated fiber with five or six directional adjustments. To estimate the output beam size for fibers having a different na, use the following. Zemax to showcase optical design and simulation software. Collimating lensfocusing lens 7mm for laser diodes ld optical.
In general, though, the degree of performance degradation. Wavelength technology singapore ltd robert huang zemax. A collimator is a device which narrows a beam of particles or waves. One lens with a negative focal length and the other with a positive one creates a setup to collimate and expand or shrink the beam. Zemax software now models edmund optics lenses laser. A novel freeform lens design for collimating uv light. Betsy goodwin has worked with zemax, llc for the past two years, as an optical engineer. Basic optical engineering for engineers and scientists. Solution of exercises lecture optical design with zemax. Adjustable fiber optic collimators newport corporation. Zemax and ansys collaborate to enable safer, reliable autonomous vehicle navigation.
Over the years, my team and i have designed optical system including. Its styled like a traditional leica m rangefinder and. Flawlessly import optical designs instead of spending hours recreating lenses, opticsbuilder enables cad users to quickly and flawlessly convert lens design data from opticstudio, like lens materials, positions, sources, wavelengths, and detectors into native cad parts. To verify the practical performance of the lens, a prototype of the collimator lens is also made, and an optical efficiency of 90. As regards connectorization, collimating or focusing lens systems developed by idil fibres optiques offer two types of inputs, namely pigtails or connectorsadapters. Dear thorlabs, i am using your f240smab collimator into an optical system, and to optimize my system thanks to an optical software opticstudio by zemax, i need more information about the collimator. A cross section of an led signal lamp with a fresnel lens and a pillow lens is shown in figure 5. From optomechanical components to telecom test instrumentation, thorlabs extensive manufacturing capabilities allow us. Designing a simple optical system in lighttools liliana ruiz diaz december 08, 2016 college of optical sciences, university of arizona, tucson, az usa 85721 1. Pdf design and optimization of a collimating optical system. Avantes collimating lenses are optimized for the uvvisnir range 2002500 nm and have anodized aluminum housings. Additionally, the system can be transferred as a black box, so ip is protected without limiting the simulation analysis.
In my product development experience, this is by far the most common use of noncircular optics. I basically am wondering what type of lens would be best to capture short pulses of 904nm. This article gives a recommended approach to the optimization of nonsequential optical systems. The ideal case is a more complex shape that is typically defined using a radius of curvature, a parabolic term conic, and several high order coefficients.
Dslr oled viewfinder optics, lcos digital rifle scope, automotive hud, offaxis miniature hmd projector with free form lenses, very wide angle camera lens, super telephoto catadioptric camera lens, iris scan imaging lens, fingerprint imaging lens, structured light endoscope projection lens, laser line projector, bar code scanner. Zemax or other popular optical simulation programs. What are some open sourcefree optical design software. Optical lens design and fiber optics modeling expert. Since a common application is the collimation of the output from an optical fiber, lets use that for our numerical example. Pdf design and optimization of a collimating optical.
In the previous ten years, she has owned a consulting business, ray of light optical design, and has worked as an optical engineer at l3 insight technology in londonderry, nh and goodrich corporation isr in chelmsford, ma. Opticstudio has everything you need to characterize. Design and optimization of a collimating optical system. The sample file youll use to complete this tutorial is a sequential opticstudio file, which will. Zemax software releases are separated into two 2 distinct categories. Optimization of an ledcollimating lightpipe in nonsequential mode. Collimating or focusing lens system idil fibres optiques. The coluvvis and col90uvvis have a 6 mm diameter lens with a confocal length of 8. This paper presents the design of an efficient collimating optical system for an extended light source, namely a highbrightness high divergence light emitting diode led, sized 1x1mm, and viewing angle. Can you give me all technical information about the lens into the collimator. Quite frequently the most popular way to focus a laser diode beam is to use a two lens system where one lens collimates the highly divergent beam and the second lens focusses it. For this application the ideal lens is a b arcoated molded glass aspheric lens with focal length near 5. Dlip system optical modelling using zemax opticstudio software. The design was simulated by using the optical design software zemax and the results that the.
I havent had the chance to test all of them, so youre going to have to try the free ones out for yourself and see what works best for your needs. A 100 mm clear aperture collimator would be suitable for testing this lens. Leds illuminate over a wide angular range, and this can be a problem when you need a narrow angular range for things like flashlights. Optics design software zemax, optical product design software request info lensmechanix from zemax llc is designed for the creo cad platform, enabling mechanical engineers to design. Design and optimization of a collimating optical system for. And the real distance from the fiber to the lens in the collimator. It works as advertised and expected, with the focal length as stated. Geary lens design with practical examples, willmannbell, 2002 x 9. I have to think that incorporating some type of collimating lens into our design would drastically increase sensitivity. The quality of the corneal topography, which is based on our designed optical system, is evaluated. Barrington, njedmund optics lenses are now included in radiant zemax bellevue, wa raytracing optical design software, which helps optical system engineers complete opticalproduct designs. Opticstudio has everything you need to characterize the led.
Radiation entering the aperture leaves the collimator as a parallel beam, so that the image can be viewed without parallax. The structure of the collimator is shown in figure1. It is defined based on geometrical considerations and is thus a. Last, the collimating illumination lens structure is designed by paraxial ray trace equations.
Examples of recent imaging optical design projects includes. The collimator should be well corrected over the wavelength range of the optical system under test. By harnessing the power of opticstudio, opticsbuilder, and opticsviewer, optical, mechanical, and manufacturing engineers can speak the same language across the optical product development process. Making and testing an autocollimating flat auto collimation is a test method using a full size flat mirror to test parabolic mirrors and telescopes in double pass using a light source at the focus of the optic. Over the years, my team and i have designed optical system including eyepiece, objective, projection lenses, dvd pick up lens, fresnel lens, ccd camera lens, thermal imaging lens, reflective telescope and many other. Solution of exercises lecture optical design with zemax for phd part 4 4. The recommended methods are to use pixel interpolation, aggregate detector data moment of illumination data and the orthogonal descent optimizer. It is mainly used as a collimator for diode lasers and will replace the lens type cax100. Collimating your lens is one of the simpler things you can do. They have been using zemax for this, but i dont have access to it, so im looking for a cheap ideally free. Optics design software zemax, optical product design. The caw100 is a plastic lens of 785 nm with a numerical aperture of 0.
It is a null test and very quick, once correctly aligned, not needing zonal reading or analysis. The design lies in a catadioptric rotationally symmetrical system, which modeling and optimization has been done by specific optical design software, zemax, and its development was. Design and implementation of optical system for placido. Zemax is becoming the most commonly used optical design software for its capabilities, technical support, and cost. Optical lens design,laser beam propagation single and multimode, stray light analysis, hologram modeling, grin media modeling, diffraction analysis, thin film coating modeling, modeling of. Here, the glass of f5 is selected as the thick lens material. Pdf a novel freeform lens design for collimating uv. Adding a second lens with a positive focal length f 2 and separating the two lenses by the sum of the two focal lengths. The leica q2 is an impressively capable fixedlens, fullframe camera with a 47mp sensor and a sharp, stabilized 28mm f1. Nov, 2019 first, because optical engineers can cut out the parts of the lens that arent going to be used, noncircular optics can take up less space. This occur because the light source is not placed in the back focal length bfl of the lens. The above is an imaging optics argument, but the idea is very general as were stepping into the optical version of the second law of thermodynamics.
Shannon the art and science of optical design, cambridge univ. Optical sensors including lidar, radar, visible and ir cameras play a key role in advanced driver assistance systems adas and are critical to pushing autonomous vehicles av robustly and safely towards full level 5 autonomy. Zemax software and service pack releases zemax software evolves over time with each new release replacing the previous version. Collimating the light source in the simulation window you will see that light is not fully collimated. Optical lens design,laser beam propagation single and multimode, stray light analysis, hologram modeling, grin media modeling, diffraction analysis, thin film coating modeling, modeling of complex sources and detectors, thermal analysis and fiber coupling analysis. Making and testing an autocollimating flat optical eds. Making and testing an auto collimating flat auto collimation is a test method using a full size flat mirror to test parabolic mirrors and telescopes in double pass using a light source at the focus of the optic. Optimization ii systematic methods and optimization process, starting points, optimization in zemax 8 04. A zemaxee version 2005 was used to evaluate the spot size at desired plane. Since most sources radiate at all angles, it is obvious that increasing d or. A short video showing how an optical engineer uses zemax to create a lens design a collimator for an led.
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