The position of the spot on the image plane is directly proportional to the scan angle. How are images formed in wide angle lenses optics for hire. Telecentric f theta lenses require very large lens diameters for long scanning paths lens diameter approx. This is zemax tutorial 1 lens data editor interface by optics on vimeo, the home for high quality videos and the people who love them. Arges offers a wide range of socalled ftheta lenses to focus the laser beam on a single plane over the entire scan field during 2d processing. Then, the initial structure parameters are determined by pw method. Ftheta lenses solve many of the problems associated with laser scanning.
Thorlabs telecentric scan lenses are ideal for use in laser scanning imaging systems and applications such as optical coherence tomography oct, confocal laser scanning microscopy, and multiphoton imaging. I fear youll want to get hold of zemax or equivalent to see exactly. Or does a different diffraction behavior apply if one greatly changes the lens projection or has extreme distortion. Thermal lens, which occurs at high power laser applications and leads to afocal shift, is also minimized. Theoretically, when there is no nonlinear absorption, the zscan curve must be symmetric around.
Basically the optics is roughly the same as in the thermal lens case. Lenses used in combination with xy galvanometer scanner are called. Beginning with the initial structure, the final optimized f theta is achieved with zemax optical design software. As of the 26 october 2010 release of zemax, the wavl command in. 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.
Zemax tutorial 1 lens data editor interface on vimeo. F theta, telecentric f theta lens, ftheta objective lens. Pdf design of an optical system fort the in situ process montoring. How to propagate a tilted gaussian beam through a telecentric fthetalens. When i cut the optical fiber, due to the large diameter of the fiber, cracks are formed on the surface. The diffractionlimited, multipleelement, airspaced lens design is optimized for a flat field in the image plane and low ftheta distortion. By using non uniform rational bspline nurbs curves for ftheta lens correction higher order spatial derivatives are analytic and continuous for the smoothest possible corrected motion capability. For perfect camera lenses, does the same airy disc apply regardless of the lens projection mapping. Ftheta lenses provide a flat image field at the plane of interest. Airspaced 3 or 4element designs transmission of 90% ftheta condition accuracy of better than 0. Ftheta lenses catalog 2017 ftheta lenses for galvo systems efl 100 mm, 160 mm, 254 mm accurate beam position design wavelength 1064 nm and 532 nm opto5 ftheta lenses meet the standard requirements for the laser marking world, combining the popular focal length range and mount selection with uniform beam quality. Standard lenses focus the laser beam on a spherical surface in contrast to an ideal flat or plane field. Look above, beneath the words zemax optical studio model for spherical grin lens at the line which says commits, branch, releases, contributor.
Lens system is optimized for almost diffraction limited images. Standard fused silica ftheta lenses are suitable for all highpowerlaser applications like welding, cleaning and structuring. Telecentric ftheta lenses require very large lens diameters for long scanning paths lens diameter approx. Setting the zemax zmx file encoding preference to ansi will avoid this issue entirely. The price of all types of lenses has increased so much in the last few years, it is becoming increasingly difficult for many lens buyers to afford all the lenses that they need. Zemax opticstudio system requirements armada security.
Method of analyzing the singlet ftheta scan lens for. Introduction to zemax entry with the lens data editor. Scanning lenses ftheta product information optical. Ftheta lenses are commonly used in laser scanning systems that require a flat image plane and high resolution. Yag laser and for a visible alignment laser refer to the graphs tab for d. For online inspection systems we successfully introduced true color corrected. My boss does the design work, but she uses some bootleg chinese software. Highpower microspot focusing objectives for vis and nir lasers. 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.
Linos fthetaronar lenses made of fused silica qioptiq has developed a range of new fthetaronar scan lenses made of fused silica for high power laser material processing. Optimize classic lens designs 18x faster, easier, and with better results. If there is an item not listed or you have questions, please feel free to contact us and we will be more than happy to assist you. A standard lens object is created with a radius of curvature of 500mm and a radial dimension of 7. This paper proposes a method utilizing the zemax to analyze the commercial ftheta lens. How do i flip a lens imported from a catalog in zemax. These lenses can contribute to providing your requirements in production, especially for sophisticated applications. Telecentric scan lenses produce a flat image plane and a spot size that suffers minimal dist. Different lenses allow you to adjust the size of the marking area, as many of our customers require more than one. Thorlabs f theta lenses consist of an airspaced 2 or 3element design and are available with one of three focal lengths. Now i want to use a concave mirror to form an image of an point object with a realsize, for example 10nm et al.
Please note that this page is only a representation of our most commonly used replacement ftheta singlet lenses and is not our entire product line. Ftheta lenses can shoot and form the image of objects of limited distance. Co2 ftheta lens are widely used in laser marking, engraving, drilling machines, etc. Ftheta lenses are commonly used in conjunction with galvonometer scanning mirrors in laser marking, engraving, and cutting systems along with nd.
Fisheye lens designs and their relative performance. 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. The paper provides the new type construction of laser confocal microarray scanning and fluorescent detection system. For instance would i apply the same airy disc psf regardless of if it was a 180 degree fisheye, an ftheta, or ftantheta lens. I want to learn some design software such as zemax. With preobjective scanning, the scan head is located in front of the lens in the beam path. Laser beam shaping applications laser beam shaping in array. The flatfield scanning lens has optimized the wideangle and long focallength light path, it is widely applied in wide scan range situation. Click on the red document icon next to the item numbers below to access the zemax file download. Proficiency with zemax does not guarantee success with modeling your optical system.
Every laser marking system comes with an ftheta lens. We also have ftheta lenses for 532 nm, 355 nm, and 266 nm available upon request. Lasertec was estabilished on 2004,based in china, is a recognized leader in laser components and highperformance optical solutions. Combining adequate laser material and laser optics. It is applied to the flatbed scanner and high shot instrument equipment. Zemax or code v, is the best way to optimize the modules. The scanner exploits the functional advantages and the optical system has small spot size, great linearity and large depth of focus. A lens of approximately this size can be found in the catalog of melles griot as. Lens design with computational software like zemax and codev are the norm now. The linos ftheta lenses for laser material processing guarantee the best processing results over the entire working field. 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.
We accidentally found this f theta lens drawing and we are very interested in it. We accidentally found this ftheta lens drawing and we are very interested in it. Fused silica minimizes focus shift while providing high power density. Features include large scan fields ranging from 70 mm. These lenses are able to realize tighter spot sizes, which translate into higher resolution for scanning or printing, as. Ftheta lens isolator and rotator aoqswitches rtp pockels cell dkdp pockels cell ftheta lenses laser beam expander diffusion bonding crystals. The lenses with close parameters for each projection were found and then additionally optimized by zemax to match with image formation equation for each projection. Sunny technology offers applicationspecific optical solutions by selecting optimum lens for your application. By introducing a specific amount of barrel distortion in the lens, the image height of the ftheta lens is proportional to the scanning angle. However, i looked up the literature and have not found any type.
The results indicate the ftheta lens can increase the quality of the drilling holes and amend the projection plane. This lens focuses a laser beam scanned with a scanner, etc. The adjacent plot shows departure from perfect linear ftheta mapping for each of the full field fisheye lenses. Telecentric ftheta scanner lenses telecentric scanning lenses are a special configuration in which the arrangement of optics are designed to focus the beam such that it is always perpendicular to the flat field.
Scanning lenses ftheta optical components scanning lenses product information cascade laser corp. The elements are coated with a high efficiency ar coating for a 1064 nm nd. Cvi designs have been developed for several common wavelengths and focal lengths. Zemax tutorial 1 lens data editor interface youtube. I created a bessel beam using axicon thorlab, input lens data zemax file is used i. Office 2019 is ftheta lenses are designed to focus a laser beam onto a planar image plane. In this paper, a simple and practical design of ce lens aimed to clearer and widerangle intestine image is proposed based on zemax. The new lens improves the field curvature and distortion with. Zemax opticstudio 2016 download zemax opticstudio 19. Equidistant is used more in laser scanning systems like the ftheta lenses for. This is especially important for drilling applications such as.
Ftheta scan lens is used in conjunction with xy galvanometer scanner and beam expander to form a two dimensions scanning system. It provides full glass highperformance lens, and different lenses meet the functions of a3, a4, barcode scanning. Ftheta lenses available only as spare part for dilas diode laser system or in combination with the galvo scanner. Here is presented a simple example system showing the setup required when using the macro to sample a lens surface in zemax. Send mail to webmaster with questions or comments about this web site. It is used for high speed micro drilling of printed circuit boards, highspeed marking of electronic parts and resin parts, etc. The enabling key component, ftheta lenses, is designed as micrometer focusing scanning lens. Characteristics applications benefits request datasheet forftheta lens systems with mechanical drawings. Ftheta lenses are the standard lenses for galvoscannerbased laser marking, engraving, and cutting systems. Optimized design of capsule endoscopy lens based on zemax.
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