Its field of view is 28 which corresponds to 14 deflection angle of the oscillating mirrors. When you select a company for optical design, it pays to work with someone who understands not only design but manufacturability. Thorlabs ftheta lenses consist of an airspaced 2 or 3element design and are available with one of three focal lengths. A telecentric f theta lens differs from a normal f theta lens in that the axis of the focused laser beam bundle is perpendicular to the scanning plane throughout. Oct 05, 2011 introduction to zemax entry with the lens data editor.
My boss does the design work, but she uses some bootleg chinese software. By examining the examples of relatively simple lens designs, it is actually easier. 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. F theta lenses are the standard lenses for galvoscannerbased laser marking, engraving, and cutting systems. While optical design software platforms offer the user many types of freeform surfaces, the uniqueness of the chebyshev polynomial set available in zemax opticstudio lends particular advantages to many design scenarios. Look above, beneath the words zemax optical studio model for spherical grin lens at the line which says commits, branch, releases, contributor. The optical design of the new ftheta lens has been performed with the simulation software zemax. Opticstudio is its flagship product and a commonly used optical design program for microsoft windows. Correction ii field lenses, stop position influence, aspheres and higher orders, principles of glass. Telecentric lens in space designed facilitates the adjustment of light path. Creating highaccuracy telecentric lenses for machine vision systems machine vision is the technology and process by which machines automatically inspect and analyze.
The zmx file format is the file format of the zemax lens design program widely used on windows computers. Ftheta lenses are designed with a barrel distortion that yields a displacement that is linear with. Optics tutorial 2 lens and focusing basics youtube. Ftheta lenses solve many of the problems associated with laser scanning. Continuing the bestselling tradition of the authors previous books, lens design, fourth edition is still the most complete and reliable guide for detailed design information and procedures for a wide range of optical systems. Lens design is, therefore, a strong component of a wellrounded education in optics, and a skill valued by industries employing optical engineers. Optical design and manufacturing expert shanghai optics. Pdf optical design of a new folding scanning system in mems. Telecentric ftheta lenses require very large lens diameters for long scanning paths lens diameter approx. The ftheta silverline lens 170355140 in the wavelengthrange of 355 nm. The diffractionlimited, multipleelement, airspaced lens design is optimized for a flat field in the image plane and low ftheta distortion.
By the optical design software zemax, the corresponding primary spherical aberration, coma, astigmatism, distortion, and field curvature coefficients can be. A telecentric ftheta lens differs from a normal ftheta lens in that the axis of the focused laser beam bundle is perpendicular to the scanning plane throughout. By examining the examples of relatively simple lens designs, it is actually easier to dissect why the lens designs are the way they are. Design of large working area ftheta lens college of optical. 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. Computer optimize after computing the initial dimensions, putting the design into lens design software, such as zemax or code v, is the best way to optimize the modules independently, as well as the overall design. I want to learn some design software such as zemax. Photonics singapore wavelength optoelectronic s pte ltd. F theta lenses solve many of the problems associated with laser scanning.
Fisheye lens design prescriptions suitable for 35 mm photography are not commonly presented in lens design texts or databases. For example, out of the 15,100 us patent designs, the leading optical design database lensview optical data solutions, ny does not include any 35 mm fisheye camera lenses us patents. Cementing two lenses a very small distance apart and with nearly equal radii. Lens design fundamentals rudolf kingslake, applied optics and optical design part 1 and part 2 a. Professional heavyweights like zemax and codev are very expensive. Using the led raysets and zemax software ofh designed tir lenses with different beam angles in the same form factor. 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.
Courses zemax opticstudio wavelength optoelectronic. The elements are coated with a high efficiency ar coating for a 1064 nm nd. Mar 20, 2015 by employing the optical design software zemax, a foldaway uniform scanning optical system based on mems has been designed, and the scanning uniformity and spot size of the system on the target. In photographic lenses2 published in 1932, willy merte credits the first real fisheye lens to r. But my work constitutes only 10% in optics very basic setups and the rest 90% is into software, manufacturing, etc. New freeform surface based on chebyshev polynomials. Some designs require premium or professional editions. Beginning with the initial structure, the final optimized ftheta is achieved with zemax optical design software. See if you can eliminate an element or improve the performance in an all spherical design by using an asphere. Nevertheless, modern optical design software allows for reasonably simple. Filled with sage advice and completely illustrated, lens design, fourth edition supplies handson guidance for the initial design and final optimization for a plethora of commercial, consumer, and. Zemax delivers design software, training, and support services that set the highest standards for the optical and illumination industries. Free version of the winlens3d optical design package, which provides serious design and analysis tools for optical engineer, student or designer. Optimal lens design and use in laserscanning microscopy.
Correction i symmetry principle, lens bending, correcting spherical aberration, coma, stop position, astigmatism, field flattening, chromatical correction, retrofocus and telephoto setup, design method 12 29. If the deflection of the laser beam occurs in the beam path in front of the lens, the scanning path lies in a plane perpendicular to the optical axis of the lens. Smith, and optical system design robert fischer, introduction to lens design. The results indicate the ftheta lens can increase the quality of the drilling holes and amend the projection plane. Laser spot size is guaranteed to be appropriate value at distance of about 100 m. The designed f theta lens is compact with the simple structure and large working area. These lenses are able to realize tighter spot sizes, which translate into higher resolution for scanning or printing, as well as higher intensity for engraving or welding. Zebase 6 includes a copy of milton laikins book, lens design, and includes designs from the book as well as many other sources. Shanghai optics is great in optical lens designs, but most important, we are an optical manufacturer. Making a surface aspheric with negligible expansion constants. Optimizing each system module will give the best case scenarios for which appropriate mounting components can be chosen. Design examples of several widely used modern lenses are provided.
But all of these software packages share one critical flaw. New optical design method solves the problem of limited scanning angle. Ftheta lenses shanghai optics custom optical lens design. Imaging fundamentals of fourier optics, physical optical image formation, imaging in zemax 12 04.
The opticstudio opticaldesign software by radiant zemax, mentioned earlier, is an example of an opticaldesign package that has illuminationsystem design capabilities built in. There is no much usable free software in optical design. He has over 20 years of experience in various areas, which include lens designs in fields of eyepiece, 3d projection design, 3d confocal optics, doe, ftheta lens, optical system with vir, nwir, mwir, lwir, gaussian beam propagation, cell phone lens design, machine vision, mirror system design, telescope. Employing the optical design software zemax, according to the preset parameters mentioned above, we designed the whole memsbased folding scanning optical system, in which the ftheta telecentric lens group and wideangle lens group are the two key components. Explore design principles such as bending, symmetry, stop shift, and lens splitting. Learn userdefined merit functions, and learn and practice advanced lens designs for photographic systems, telecentric lenses machine visions, zoom systems, scan ftheta lens microscopes objective and eyepieces, and telescopes. Then, the initial structure parameters are determined by pw method. By introducing a specific amount of barrel distortion in the lens, the image height of the ftheta lens is proportional to the scanning angle. Jenar ftheta objective lenses are particularly well suited for use in micromachining laser applications. Proficiency with zemax does not guarantee success with modeling your optical system. Send mail to webmaster with questions or comments about this web site. Detailed laser processing with ftheta lenses jenoptik. Continuing the bestselling tradition of the authors previous books, lens design, fourth edition is still the most complete and reliable guide for detailed design information and procedures for.
F theta lenses are commonly used in laser scanning systems that require a flat image plane and high resolution. Pdf optical design and performance of ftheta lenses for high. Additionally, the compact design of the f theta lens allows the user to reduce the number of optical components needed to provide a flat image plane. Optical design using zemax to design lens elements, optomechanical design to design the case and element holders, vendor selection and qc. This paper proposes a method utilizing the zemax to analyze the commercial ftheta lens. Introduction to zemax entry with the lens data editor. Yag laser and for a visible alignment laser refer to the graphs tab for d. These lenses are able to realize tighter spot sizes, which translate into higher resolution for scanning or printing, as. Here, the glass of f5 is selected as the thick lens material. Our engineers use the right lens design process with the knowledge of manufacturing process and limitations and cost. Distortion is distinct from parallax, which is a change in magnification field of view with working.
Fisheye lens designs and their relative performance. Optical design of a new folding scanning system in mems. Beginning with the initial structure, the final optimized f theta is achieved with zemax optical design software. Correction i symmetry principle, lens bending, correcting spherical aberration, coma, stop position, astigmatism, field flattening, chromatical correction, retrofocus and telephoto setup, design method 11. While optical design software platforms offer the user many types of freeform surfaces, the uniqueness of the. Optical design collection zebase 6 requirements zebase must be used with opticstudio or zemax optical and illumination design software.
Hence, the focal lens of the scanning system usually uses the ftheta lens to solve this problem. Leading optical product design software for engineering. Every step from setup specifications to finalizing the design for production is discussed in a straight forward, tangible way. With practical zemax examples joseph geary, are all great books, just to name a few.
Here we present several simple lens designs of superior quality that fully make use of highna lowmagnification objectives, offering diffraction. Ftheta lenses are the standard lenses for galvoscannerbased laser marking, engraving, and cutting systems. Additionally, the compact design of the ftheta lens allows the user to reduce the number of optical components needed to provide a flat image plane. Lens design was more conceptual in the early days of lens design since computational lens design had not been developed.
See that the first line of the file contains information for the version number, coded vers yymmdd nn llllll where yymmdd is the date of the version of zemax that created the file, nn seems to be an index for the file number, and llllll is the license number for the zemax seat that saved the file. According to kingslake4, the hill sky lens of 1924 was manufactured by beck of london. Opticstudio is the leading software used by optical engineers throughout the design phase. Osa optimal lens design and use in laserscanning microscopy. Optical design of a new folding scanning system in memsbased. Hill evidently is the first to develop a glass fisheye lens, and his design was found to be useful to meteorologists for allsky photography. Opticstudio, then called zemax, was originally written by ken. Replacing a thick lens by two thin lenses, which have the same power as the two refracting surfaces. A practical guide to lens design focuses on the very detailed practical process of lens design. By employing the optical design software zemax, a foldaway uniform scanning optical system based on mems has been designed, and the scanning. Ftheta lens for laser material processing applications jenar ftheta objective lenses can be used for the highprecision micro structuring, marking and labeling of a wide range of materials.
Geary, willmannbell, practical computeraided lens design, g. May 01, 2014 after studying multiple lens arrangements and keeping the number of lenses to a minimum we present a ready to manufacture 50 mm fl scan lens for a 4 mm o 1e 2 gaussian beam that is useful for a wide range of laser scanning microscopy applications having exceptional optical performance over 4201600 nm fig. In addition to these standard designs, we can develop complete systems for you, using components from laser beam shaping to the expansion and splitting of. Zemax announced the latest release of their flagship software, opticstudio. Opticstudio and opticsbuilder are the tools of choice for scientists and engineers designing imaging optics, such as telescopes, cameras, and sensors for the mars rover, and twophoton microscopes for neurological imaging. Zemax tutorial 1 lens data editor interface youtube. Design mechanical structures around optical components in minutes using the exact component data. In laserscanning microscopy often an offtheshelf achromatic doublet is used as a scan lens which can reduce the available diffractionlimited fieldofview fov by a factor of 3 and introduce chromatic aberrations that are scan angle dependent. The structure of the collimator is shown in figure1.
It is used for the design and analysis of both imaging and illumination systems. By employing the optical design software zemax, a foldaway uniform. In order to create small and precise structures, the design. Scanning lenses ftheta product information optical. A place for questions and discussions pertaining to optical science and optical engineering. In an ftheta lens, the output beam displacement is equal to f. We offer the ftheta objective lenses as a standard selection or can adapt them to meet your exact requirements. It consists of only four spherical lenses and its tube length is less than 100 mm. Zemax is a company that sells optical design software. Ftheta lens and wideangle lenses added are beneficial to scanning angle expansion. For example, out of the 15,100 us patent designs, the leading optical design database lensview optical. Pdf optical design for uniform scanning in memsbased 3d.
The designed ftheta lens is compact with the simple structure and large working area. Distortion is a monochromatic optical aberration that describes how the magnification in an image changes across the field of view at a fixed working distance. In 2020, zemax will have three opticstudio releases, the first in. Apply these principles and knowledge to various optical systems with tolerancing analysis. Although i have taken a great deal of effort to assure accuracy, the user of any of. Ftheta lenses are commonly used in laser scanning systems that require a flat image plane and high resolution.
The diffractionlimited, multipleelement, airspaced lens design is optimized for a flat field in the image plane and low f theta distortion. Telecentric f theta lenses require very large lens diameters for long scanning paths lens diameter approx. Oct 03, 2018 a new cdrom accompanies this edition, offering extensive lens prescription data and executable zemax files corresponding to figures in the text. This should be taken into consideration in the design of the apparatus into which the ftheta lens is placed. Ray tracing and aberration theory was invented during this period. To get around this problem, first download the files to your disk, then open them from zemax or windows explorer. The ultimate guide to lens design using the classic.
By introducing a specific amount of barrel distortion in the lens, the image height of the f theta lens is proportional to the scanning angle. He has over 20 years of experience in various areas, which include lens designs in fields of eyepiece, 3d projection design, 3d confocal optics, doe, f theta lens, optical system with vir, nwir, mwir, lwir, gaussian beam propagation, cell phone lens design, machine vision, mirror system design, telescope. Does anyone know where i can find bootleg american softare. Method of analyzing the singlet ftheta scan lens for.
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