{"product_id":"mitutoyo-378-834-7-bd-plan-apo-20x-objective-for-bright-dark-field-observation-in-visible-range","title":"Mitutoyo 378-834-7 BD Plan Apo 20X Objective for bright\/dark-field observation in visible range","description":"\u003cp\u003eThe BD Plan Apo 20X is a high-quality plan apochromat objective designed for both bright field and dark field inspection. It is ideally suited for identifying scratches, concavity, convexity, and fine surface irregularities, delivering excellent contrast and clarity for precision surface analysis.\u003c\/p\u003e\n\u003cp\u003eWith an infinity-corrected optical design and correction across the visible wavelength range (436–656 nm), this objective ensures sharp, flat-field imaging in both bright and dark field modes. The 20 mm working distance provides practical clearance while maintaining strong optical performance for mid-range magnification inspection tasks.\u003c\/p\u003e\n\u003cp\u003eFeaturing a numerical aperture of 0.42 and a resolving power of 0.7 µm, the BD Plan Apo 20X delivers detailed and reliable imaging performance. It is fully compatible with MF-U and Hyper MF-U microscope systems, making it a dependable choice for industrial and laboratory inspection environments.\u003c\/p\u003e\n\u003cp\u003eKey Features\u003c\/p\u003e\n\u003cp\u003eSuitable for Bright Field and Dark Field inspection\u003c\/p\u003e\n\u003cp\u003eIdeal for detecting scratches, concavity, convexity, and fine surface defects\u003c\/p\u003e\n\u003cp\u003eHigh-quality Plan Apochromat optical design\u003c\/p\u003e\n\u003cp\u003eInfinity corrected\u003c\/p\u003e\n\u003cp\u003eLong working distance design\u003c\/p\u003e\n\u003cp\u003eOptimised for visible wavelength range (436–656 nm)\u003c\/p\u003e\n\u003cp\u003eSpecifications\u003c\/p\u003e\n\u003cp\u003eModel: BD Plan Apo 20X\u003c\/p\u003e\n\u003cp\u003eMagnification: 20x\u003c\/p\u003e\n\u003cp\u003eWorking distance (in air): 20 mm\u003c\/p\u003e\n\u003cp\u003eNumerical Aperture (N.A.): 0.42\u003c\/p\u003e\n\u003cp\u003eCorrected wavelength range: 436–656 nm\u003c\/p\u003e\n\u003cp\u003eResolving power: 0.7 µm\u003c\/p\u003e\n\u003cp\u003eDepth of field: 1.6 µm\u003c\/p\u003e\n\u003cp\u003eField of view (ø24 mm eyepiece): ø1.2 mm\u003c\/p\u003e\n\u003cp\u003eField of view (1\/2” camera chip): 0.24 × 0.32 mm\u003c\/p\u003e\n\u003cp\u003eSpectral range: VIS\u003c\/p\u003e\n\u003cp\u003eObservation mode: Brightfield \/ Darkfield\u003c\/p\u003e\n\u003cp\u003eGlass compensation: No\u003c\/p\u003e\n\u003cp\u003eLaser applications: No\u003c\/p\u003e\n\u003cp\u003eMass: 400 g\u003c\/p\u003e","brand":"Mitutoyo","offers":[{"title":"Default Title","offer_id":56428527321468,"sku":"378-834-7","price":1989.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/9428\/5114\/files\/2Mitutoyo378-834-7BDPlanApo20XObjectiveforbright_dark-fieldobservationinvisiblerange.jpg?v=1772481995","url":"https:\/\/www.hroberts-di.com\/products\/mitutoyo-378-834-7-bd-plan-apo-20x-objective-for-bright-dark-field-observation-in-visible-range","provider":"H Roberts \u0026 Sons","version":"1.0","type":"link"}