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BTOER 160mm Objective Lens for Biological Microscopes 4X to 100X Magnification

<ul><li>[COMPATIBLE WITH 160MM TUBES] Designed specifically for corrected optical systems with a 160mm focal length, making it for biological microscopes.</li><li>[SPRING LOADED OBJECTIVES] The 40x, 60x, and 100x objectives feature spring loading to safeguard your slides from damage during use.</li><li>[COATED OPTICAL PARTS] Each lens is equipped with coated optical components to enhance and reduce glare, optimal viewing conditions.</li><li>[NUMERICAL APERTURE DESIGN] The 100x objective incorporates pine pitch for precise numerical aperture design, improving image resolution significantly.</li><li>[SIZING REMINDER] Please refer to your personal size chart to for ensure compatibility before purchase.</li></ul>

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Features:*Suitable for infinity-corrected optical systems used with 160mm focal length tubes, such as biological microscopes.*Standard DIN 45mm focal length with coated optical parts.*40x, 60x, 100x objectives are spring loaded to prevent slide damage.*The 100x objective is equipped with pine pitch to achieve the design of numerical aperture.*Corrected for chromatic aberration, spherical aberration, and paraxial coma in two bands.Specifications:Part Name:Objective LensMaterial:Precision copper coreSize:As shownColor:BlackMagnification: 4X//20X/40X/60X/100X&nbsp;Mounting size: 20.2mm&nbsp;Tube length: 160mm&nbsp;4X: Numerical aperture () 0.1; Working distance 18mm&nbsp;: Numerical aperture () 0.25; Working distance 7mm&nbsp;20x: Numerical aperture () 0.4; Working distance 0.55mm&nbsp;40X: Numerical aperture () 0.65;&nbsp;60X: Numerical aperture () 0.85; Working distance 0.18mm&nbsp;100X: numerical aperture () 1.25; working distance 0.13 mmPackage Content:1*Objective LensNote:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.