{"product_id":"magus-20pl60v-plan-20h-0-40-1-2-h60mm-objective","title":"MAGUS 20PL60V Plan 20х\/0.40 ∞\/1.2 H60mm Objective","description":"\u003cp\u003eObjective for brightfield observations. The MAGUS Bio V360 microscope kit includes phase objectives. The inner lens of such an objective has a metal film ring etched on it that is required for phase contrast observations. The metal film provides a quarter-wavelength phase shift relative to the rest of the light  and it reduces light transmission. Therefore  objectives without phase plates are recommended for brightfield observations.\u003c\/p\u003e \u003cp\u003eThe resolution limit of a 20х\/0.40 objective is 0.69μm. Chromatic aberrations are corrected for blue and red  spherical aberration for green  and the field curvature is corrected for 90% of the field of view diameter.\u003c\/p\u003e \u003cp\u003eThe objective is specifically designed for the infinity-corrected tube length. The parfocal distance is 60mm. When a 10\/22 mm eyepiece is used  the diameter of the field of view is 1.1mm. The objective is for carrying out work with dishes with a bottom thickness of 1.2mm.\u003c\/p\u003e \u003cp\u003eThe lower limit of the microscope’s useful magnification  when a 20x objective is used  is 200x. Lower magnification does not allow you to distinguish the details of the specimen whose image is formed by the objective. The upper limit of the useful magnification  when a 20x objective is used  is 400x. Higher magnification is considered “useless” as it provides no new detail in the image of the sample. With the 20x\/0.40 objective  use the eyepieces with a magnification from 10x to 20x.\u003c\/p\u003e \u003cp\u003ePlan achromatic objectives form an image that has the same focus in the center and at the edges and  therefore  the distortion is negligible. This strength is used for digital imaging and combining them with wide-field eyepieces with a 22mm field of view.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMAGUS Bio V360 Biological Inverted Microscope\u003c\/li\u003e \u003c\/ul\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMAGUS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEAN\u003c\/td\u003e\n\u003ctd\u003e5905555025759\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage size (LxWxH)\u003c\/td\u003e\n\u003ctd\u003e3x5x3 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens material\u003c\/td\u003e\n\u003ctd\u003eoptical glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective class by aberration correction degree\u003c\/td\u003e\n\u003ctd\u003eplan achromatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification  x\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e0.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking distance  mm\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParfocal distance  mm\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom thickness  mm\u003c\/td\u003e\n\u003ctd\u003e1.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible tube length  mm\u003c\/td\u003e\n\u003ctd\u003einfinity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring-loaded frame\u003c\/td\u003e\n\u003ctd\u003eno\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImmersion\u003c\/td\u003e\n\u003ctd\u003eno\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"MAGUS","offers":[{"title":"Default title","offer_id":52789552480585,"sku":"85121","price":169.95,"currency_code":"EUR","in_stock":true}],"url":"https:\/\/madeiraoptics.com\/pt-es\/products\/magus-20pl60v-plan-20h-0-40-1-2-h60mm-objective","provider":"Madeira Optics","version":"1.0","type":"link"}