Optics tutorial 2 lens and focusing basics youtube. Optical lens design and fiber optics modeling expert cecon. 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. Avantes collimating lenses are optimized for the uvvisnir range 2002500 nm and have anodized aluminum housings. What is lighttools lighttools is a 3d optical design software that supports virtual prototyping, simulation. Last, the collimating illumination lens structure is designed by paraxial ray trace equations. I started to use zemax 10 years ago for laser application such as collimating lens, beam expander and scan lenses. Solution of exercises lecture optical design with zemax for phd part 4 4. To estimate the output beam size for fibers having a different na, use the following.
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. Over the years, my team and i have designed optical system including. Collimating or focusing lens system idil fibres optiques. 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. The speos lens system importer can bring any optical sensor design from zemax s industryleading optical design software, opticstudio, into speos simulation software. 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. 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. Optimization of an ledcollimating lightpipe in nonsequential mode. Additionally, the system can be transferred as a black box, so ip is protected without limiting the simulation analysis. Design and optimization of a collimating optical system for high divergence led light sources. Opticstudio has everything you need to characterize the led. Smith modern optical engineering, graw hill, 2000 x 7. A short video showing how an optical engineer uses zemax to create a lens design a collimator for an led.
Second, the imaging lens structure is designed and optimized by zemax software. The design was simulated by using the optical design software zemax and the results that the. How to optimize nonsequential optical systems zemax. Shannon the art and science of optical design, cambridge univ. Secondary optics design considerations for superflux leds. The c171tmdb mounted or 354171b unmounted aspheric lenses have a focal length of 6. By using this method, a highly collimating lens with led chip size of 1. 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.
That means, ensuring the lens is deadon at infinity. It works as advertised and expected, with the focal length as stated. Examples of recent imaging optical design projects includes. A zemaxee version 2005 was used to evaluate the spot size at desired plane. Parameters selected for the simulation are listed in table 3.
In optical terms this is that the sources optical grasp. The caw100 is a plastic lens of 785 nm with a numerical aperture of 0. Zemax software releases are separated into two 2 distinct categories. In order to evaluate the propagation rays of solved planoconvex aspheric lens with commercial optical software package, the surface data were fitted to an even aspheric surface by eq. Exercises lecture optical design with zemax part 4 4 aberrations 4. Betsy goodwin has worked with zemax, llc for the past two years, as an optical engineer. A novel freeform lens design for collimating uv light emitted. Molded glass aspheric lens laser collimating lensesid. Solution of exercises lecture optical design with zemax. Zemax or other popular optical simulation programs. Jul 09, 2015 betsy goodwin has worked with zemax, llc for the past two years, as an optical engineer.
It is defined based on geometrical considerations and is thus a. Dlip system optical modelling using zemax opticstudio software. 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. Optimization ii systematic methods and optimization process, starting points, optimization in zemax 8 04. 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. Zemax delivers design software, training, and support services that set the highest standards for the optical and illumination industries. 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 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. Can you give me all technical information about the lens into the collimator. 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. Design and implementation of optical system for placido. Pdf design and optimization of a collimating optical system. Since a common application is the collimation of the output from an optical fiber, lets use that for our numerical example. Making and testing an autocollimating flat optical eds.
Illumination introduction in illumination, simple photometry of optical systems, nonsequential raytrace, illumination in zemax. 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. 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. 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 collimator should be well corrected over the wavelength range of the optical system under test. They have been using zemax for this, but i dont have access to it, so im looking for a cheap ideally free. Zemax software now models edmund optics lenses laser. 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. Thorlabs specializes in the building blocks for laser and fiber optic systems. To verify the practical performance of the lens, a prototype of the collimator lens is also made, and an optical efficiency of 90. The structure of the collimator is shown in figure1. What are some open sourcefree optical design software. Optical lens design and fiber optics modeling expert. 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. 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. In general, designs that use collimating secondary optics are more efficient, and produce a more uniform lit appearance.
This article gives a recommended approach to the optimization of nonsequential optical systems. 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. Im using it to collimate a laser into some fiberoptic cables for ringgyro experiments. 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. Zemax and ansys collaborate to enable safer, reliable autonomous vehicle navigation. 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 and service pack releases zemax software evolves over time with each new release replacing the previous version. 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.
A 100 mm clear aperture collimator would be suitable for testing this lens. I have to think that incorporating some type of collimating lens into our design would drastically increase sensitivity. Optics design software zemax, optical product design. Since most sources radiate at all angles, it is obvious that increasing d or. A novel freeform lens design for collimating uv light emitted from a led with large divergent angle. 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. Opticstudio has everything you need to characterize. A collimator is a device which narrows a beam of particles or waves. 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.
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. The recommended methods are to use pixel interpolation, aggregate detector data moment of illumination data and the orthogonal descent optimizer. In general, though, the degree of performance degradation. Basic optical engineering for engineers and scientists. Pdf design and optimization of a collimating optical. Various optical design codes allow for accurate modeling of these incoherent light sources and here we use zemax optical design software. It is a null test and very quick, once correctly aligned, not needing zonal reading or analysis. I basically am wondering what type of lens would be best to capture short pulses of 904nm. The sample file youll use to complete this tutorial is a sequential opticstudio file, which will. Handbook of optical systems, vol 15, wiley, 2005 10. The fiber launch platforms are ideal for coupling a free space laser into a single mode, multimode, or polarizationmaintaining fiber. To convert divergent beams of light into a parallel beam, a collimating lens is needed.
To narrow can mean either to cause the directions of motion to become more aligned in a specific direction i. Collimating your lens is one of the simpler things you can do. Design and implementation of optical system for placidodisc. From optomechanical components to telecom test instrumentation, thorlabs extensive manufacturing capabilities allow us. Collimating lensfocusing lens 7mm for laser diodes ld optical. Adjustable fiber optic collimators newport corporation. Wavelength technology singapore ltd robert huang zemax. In general, designs that use collimating secondary optics are more efficient, and produce a more uniform. The quality of the corneal topography, which is based on our designed optical system, is evaluated. As regards connectorization, collimating or focusing lens systems developed by idil fibres optiques offer two types of inputs, namely pigtails or connectorsadapters. 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. Dslr oled viewfinder optics, lcos digital rifle scope, automotive hud, offaxis miniature hmd projector with free form lenses, very wide angle.
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. Zemax is becoming the most commonly used optical design software for its capabilities, technical support, and cost. Collimating the light source in the simulation window you will see that light is not fully collimated. The coluvvis and col90uvvis have a 6 mm diameter lens with a confocal length of 8. Beyond its ability to manufacture collimating or focusing lens systems idil calculates optics by using zemax industry standard optical system design software. A cross section of an led signal lamp with a fresnel lens and a pillow lens is shown in figure 5.
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. 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. Barrington, njedmund optics lenses are now included in radiant zemax bellevue, wa raytracing optical design software, which helps optical system engineers complete opticalproduct designs. Geary lens design with practical examples, willmannbell, 2002 x 9. Exercises lecture optical design with zemax part 4 4. Design and optimization of a collimating optical system. Design and optimization of a collimating optical system for. Radiation entering the aperture leaves the collimator as a parallel beam, so that the image can be viewed without parallax. 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. The collimating lens is imported in the software along with uvled ray file and simulations are performed for both point source and. 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. Its styled like a traditional leica m rangefinder and. Freeform lens design for led collimating illumination. 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.
In my product development experience, this is by far the most common use of noncircular optics. Pdf a novel freeform lens design for collimating uv. In this tutorial, you learn how to package, analyze, and validate a sample lens system in lensmechanix. It is mainly used as a collimator for diode lasers and will replace the lens type cax100.
Zemax to showcase optical design and simulation software. 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. Liliana ruiz diaz lighttools tutorial p a g e 5 9 2. 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. And the real distance from the fiber to the lens in the collimator. This occur because the light source is not placed in the back focal length bfl of the lens. Designing a planoconvex aspheric lens for fiber optics. The focal distance at the specified wavelength of 785 nm is 9. For this application the ideal lens is a b arcoated molded glass aspheric lens with focal length near 5.