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An apochromatic objective lens is chromatic aberration corrected for red, blue and yellow. Optimized for bright-field illumination (incident illumination parallel to optical axis), these lenses are ideal for in-line llumination applications. Microscope objectives are sometimes used for applications outside microscopy. For example, they can be used for tight focusing of laser beams, with spot sizes of a few micrometers or even below 1 m. If the input beam is a collimated beam, an infinity-corrected objective will work best. 1 Consider the following microscope objective (infinity corrected) Magnification 50 &215; Glass Thickness 3.5 mm NA 0.50 WD 13.89 mm Focal Length 4 mm I'm confused about the difference between f (focal length) and W D (working distance). Also, what does M 50 &215; mean in the context of an infinity corrected objective. Infinity-Corrected Optical System Infinity-corrected optics are now standard in research microscopes throughout the industry. In an infinity-corrected optical system, the light beam transmitted from a specimen being observed, passes. The Global Infinity Corrected Objective Lens Market Development Strategy Pre and Post COVID-19, by Corporate Strategy Analysis, Landscape, Type, Application, and Leading 20 Countries covers and investigations the capability of the worldwide Infinity Corrected Objective Lens industry, giving factual data about market elements, development factors, significant. Infinity Corrected Objectives can be attached to any Ultra version of the Zoom 6000, 12X Zoom or Precise Eye system to increase the system magnification and decrease working distance. These objective lenses come in magnifications starting at 2X. What is Infinity-corrected Optics UIS2 optics is an infinity-corrected optical system in other words, a system in which light passes from the specimen through the objective lens without forming an image along the way. Instead, it travels in the form of infinity parallel rays to the tube lens. The tube lens is where the intermediate. I understand that infinity corrected objectives are more versatile when it comes to adding intermediate accessories, but if you want change any of the objectives, they have to be ones from the scopes specific manufacturer, whereas any standard 160mm objectives can be used with any 160mm tube length microscope. Other common abbreviations are ICS (infinity corrected system) and UIS (universal infinity system), N and NPL (normal field of view plan), Ultrafluar (fluorite objective with glass that is transparent down to 250 nanometers), and CF and CFI (chrome-free; chrome-free infinity). The objective in the illustration (Figure 1) is a plan apochromat.