Ruggedization Ad Cost Added an Afterwards

+81-3-3944-6210 Aperture Stop Single Threaded Focus EUROPE: JAPAN: | +1-856-547-3488 | +65 6273 6644

USA: ASIA: shows an Industrial Ruggedized lens where the focus travel travel the focus lens where an Industrial Ruggedized shows Industrial Ruggedized lens with simplified mechanics Figure 3 Figure 3: while it focuses, which can cause a change in pointing in the lens in pointing in change a cause can which focuses, it while is changed. point) as the focus an image an object point maps to (how difficult it more make method will typically the locking Additionally, hex small as such tools, special require likely and will focus adjust to in most industrial applications However, wrenches. or large drivers lenses since standard will not cause problems these disadvantages Once the a machine. determine the setting for be used to will likely lens can be machine setting is determined, an Industrial Ruggedized focus the appropriate the application and set once to into substituted again. without being changed and f-stop not affect the focus or f-stop offocus or f-stop the not affect These lens. an Industrial Ruggedized changing the setting accidentally the user from lenses also prevent when it is not intended. the system applications where is ideal for Industrial Ruggedization ad cost added An afterwards. changed not and once up set be will oftype this in present also is of vantage removal the to due lens the in a significant which results and adjustments, complex movements part and cost savings. reduction a lens as opposed to an Industrial Ruggedized to The disadvantage is not a lack of lens is the standard the f-stop Changing flexibility. to be lens a different require simple task and in most cases would optics the and will rotate will not be smooth travel used. The focus Industrial Ruggedization Industrial such as lenses, Industrial Ruggedized for applications many are There is rap the camera where situations factory environments, high vibration simi many where inspection systems and decelerated, accelerated idly vision and robotic plant, a throughout repeated are setups camera lar vibration survive enables a lens to Ruggedization Industrial applications. The main feature it or changing the focus. and shock without damaging of and madereduced parts are this design is simplification - moving lock down. easier to aper fixed a with replaced and removed is iris the design, this In can easily Thin iris leaves parts. moving eliminating many stop, ture spring out of envi shock or vibration in a high place and be damaged the improve greatly to eliminating them is a simple change ronment; of survivability non-rotating the simplified: also is focus The lens. the barrel and a double threaded with a simple single thread is replaced set screws. nut, or several rigid locking mechanism, such as a clamp, Figure 3 iris the and screws locking with thread focus single a to reduced is machines and Vibrating aperture. with a fixed has been replaced armature will or automated on a robot the lens moving shocks from - - - Figure Multiple Leaf Iris Ball Detents RUGGEDIZATION OF IMAGING LENSES OF IMAGING RUGGEDIZATION . | www.edmundoptics.com ® Figure 2 Double Threaded Focus

Standard imaging lens with complex mechanics and an adjustable iris Standard iris with moving leaves

Figure 1 Figure 2 shows a standard fixed focal length lens with a double-threaded focal length lens with a double-threaded fixed a standard shows Figure 1: EDMUND OPTICS Figure 2: 1 and multi-leaffocus The iris is made of iris with ball detents. many when adjusting together and move that overlap leaves thin moving in as shown the f-stop, typically have thumb screws to fix the focus position once the object object the once position focus the fix to screws thumb have typically often adjustable, The iris will also be manually in view is in focus. specific f-stops. into set the adjustment to with ball detents, camera with an F-mount, threaded C-mount, or similar mount. The C-mount, or similar mount. The with an F-mount, threaded camera of adjustment manual a have will lens consisting typically focus, of a for barrel barrel, allow a threaded within another threaded to will also The focus the optics. without rotating smooth movement To better understandof the distinguishing qualities better To ruggedized must first A be defined. focal length lenses fixed standard lenses, an industrial be designed for lens will typically imaging standard types of distinct types of three ruggedization. are There ruggediza Rugged Protection Ingress Ruggedization, Industrial tion available: ization, and Stability Ruggedization. contaminants. Because of Because contaminants. new requirements, these environmental classes ofwork to ruggedized being designed specifically lenses are different of creating a multitude in therefore scenarios, different have special requirements beyond those of those beyond special requirements lens have imaging standard and industrial robotics, lenses used in factory The automation, es. and demanding environments, in specific work to inspection have and changes, temperature shocks, vibrations, involve could which Imaging lenses used in many industrial machine vision applications machine vision applications industrial in many lenses used Imaging RUGGEDIZATION ® COPYRIGHT 2017 EDMUND OPTICS, INC. ALL RIGHTS RESERVED - - - - - +44 (0) 1904 788600 Image Crosshair Image Crosshair

Object Crosshair Object Crosshair USA: ASIA: Image crosshairs overlayed, red crosshair is image from Figure 6.1 and the decentered yellow crosshair is Perturbed system where lenses are decentered within the barrel and the optical pointing stability changes. Perturbed system where lenses are decentered within the barrel and the Unperturbed system where object crosshair is mapped to the image crosshair Figure 6.1, 6.2, and 6.3 Figure 6.3 Figure 6.2 Figure 6.1 Figure 6.1: Figure 6.2: Object crosshair is mapped to a different place on the image. Figure 6.3: from Figure 6.2. Example is highly exaggerated actual changes tend to be on the order of a pixel or less. There are many options for ruggedizing and vision lenses machine options for many are There deter to every application. In order for no single option will work mine the best ruggedized lens option, the application and its environ As each ruggedized lens type consideration. into be taken ment must each fac and disadvantages, but similar advantages different features best the Knowing type. application each for be reviewed should tor type of of the life application will help extend your for protection the best performance and price. and provide system your Conclusion see iflens, of in the center an object point is the field of falls view and if even there fall it will always lens the pixel, center on the exact Stability Rugged - stabilizing the image. vibrated has been heavily ization is important field of the in applications where to view has vision, equipment, 3D stereo such as measurement be calibrated, tracking and lenses used for robotics, sensing for lenses used for the pointing to require These applications often object locations. pixel. smaller than a single much values be stabilized to ofThe disadvantage this type of ruggedization as Indus is the same to standard loss in flexibility compared which is a trial Ruggedization, comparedcost adds also engineering and design additional The lenses. lenses lenses since Stability Ruggedization Industrial Ruggedization to and glue the elements in place. labor in assembly more require ------www.edmundoptics.com/ruggedized-lenses

shows shows Figure 4 Glue Glue shows a Stability Ruggedized lens a Stability Ruggedized shows RUGGEDIZATION OF IMAGING LENSES IMAGING OF RUGGEDIZATION Glue Learn about Ruggedized Lenses more | www.edmundoptics.com Figure 5 Simple Focus With Clamping Lock ® Glue O-ring Seal Stability Ruggedized lens with all elements glued in place Ingress Protection Ruggedized lens with an O-ring to seal out contaminants Figure 5 Figure 4 Figure 5: Figure 4: EDMUND OPTICS inner diameter ofinner diameter less than 50 mi the barrel (typically is minute the minimal amount of Despite crons). of decenters space, of tens the pointing affect significantly enough to are microns of the lens, In an optical system, lens elements sit within the inner bore of bore lens elements sit within the inner In an optical system, of diameter barrel.the outer the between space The and lens the in which the lens elements are glued in place and a clamping lock is lock a clamping place and glued in are lens elements the in which the focus. simplify used to evolution ofevolution simplifica the same featuring Ruggedization, Industrial In addition, a simpler focus. the iris and using tions such as removing mov them from prevent place to glued into lenses are the individual ing within the housing. The final type of which pro is Stability Ruggedization, ruggedization and also maintains the optical being damaged the lens from tects an is also This shocks. and vibrations after positioning and pointing interface between the camera and lens. It is often simpler to use a sin simpler to It is often and lens. the camera between interface and lens together. both the camera that protects gle sealed enclosure Stability Ruggedization A disadvantage ofA disadvantage this type of ruggedization the lens is is that only and the the camera for is required and further protection protected small particles are present in the air around the lens. the lens. in the air around small particles present are sealed with an O-ring. lens Ruggedized Protection an Ingress gedization is used primarily in applications where the environment the environment in applications where is used primarily gedization deal ofhas a great to available and space is not humidity or moisture Another application protection. for the lens or camera enclose fully this type of for compatible dust, or environment spatter, lens is when Ruggedized lens including a fixed iris and simplified focus, as the ad focus, and simplified iris a fixed lens including Ruggedized Seal sealing. for problematic often are and focus f-stop justments for This type of silicone. done with O-ring and RTV ing is typically rug The next type ofThe next Rug Protection is Ingress ruggedizationavailable of In this type gedization. prevent to is sealed lens the assembly typi is retrofit This lens. the entering debris from foreign or moisture offeatures possesses that already a lens to applied cally Industrial an Ingress Protection Ruggedization Ingress Protection