{"product_id":"mitutoyo-378-835-7-bd-plan-apo-50x-objective-for-bright-dark-field-observation-in-visible-range","title":"Mitutoyo 378-835-7 BD Plan Apo 50X Objective for bright\/dark-field observation in visible range","description":"\u003cp\u003eThe BD Plan Apo 50X is a precision plan apochromat objective designed for both bright field and dark field inspection. It is ideally suited for detecting scratches, concavity, convexity, and fine surface irregularities, providing high contrast and detailed imaging 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), the BD Plan Apo 50X delivers sharp, flat-field imaging in both bright and dark field modes. Its 13 mm working distance offers practical clearance while maintaining strong optical performance.\u003c\/p\u003e\n\u003cp\u003eFeaturing a numerical aperture of 0.55 and a resolving power of 0.5 µm, this objective provides excellent detail at mid-to-high magnification levels. Designed for compatibility with MF-U and Hyper MF-U microscope systems, it is a reliable choice for industrial and laboratory inspection applications.\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 50X\u003c\/p\u003e\n\u003cp\u003eMagnification: 50x\u003c\/p\u003e\n\u003cp\u003eWorking distance (in air): 13 mm\u003c\/p\u003e\n\u003cp\u003eNumerical Aperture (N.A.): 0.55\u003c\/p\u003e\n\u003cp\u003eCorrected wavelength range: 436–656 nm\u003c\/p\u003e\n\u003cp\u003eResolving power: 0.5 µm\u003c\/p\u003e\n\u003cp\u003eDepth of field: 0.9 µm\u003c\/p\u003e\n\u003cp\u003eField of view (ø24 mm eyepiece): ø0.48 mm\u003c\/p\u003e\n\u003cp\u003eField of view (1\/2” camera chip): 0.1 × 0.13 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: 440 g\u003c\/p\u003e","brand":"Mitutoyo","offers":[{"title":"Default Title","offer_id":56428527354236,"sku":"378-835-7","price":2619.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/9428\/5114\/files\/Mitutoyo378-835-7BDPlanApo50XObjectiveforbright_dark-fieldobservationinvisiblerange2.jpg?v=1772481863","url":"https:\/\/www.hroberts-di.com\/products\/mitutoyo-378-835-7-bd-plan-apo-50x-objective-for-bright-dark-field-observation-in-visible-range","provider":"H Roberts \u0026 Sons","version":"1.0","type":"link"}