{"product_id":"mitutoyo-378-403-wli-plan-apo-50x-mirau-type","title":"Mitutoyo 378-403 WLI Plan Apo 50x Mirau Type","description":"\u003cp\u003eThe WLI Plan Apo 50X is a high-performance plan apochromat objective designed specifically for white light interferometry (WLI) applications. Engineered to match the WLI Unit, this objective enables highly accurate surface profiling and topography measurement at high magnification.\u003c\/p\u003e\n\u003cp\u003eIts optical design integrates a beam splitter and reference mirror directly inside the objective, allowing compact interferometric measurements without external optical components. An interference fringe adjustment mechanism is included as standard, enabling precise alignment and optimisation during measurement.\u003c\/p\u003e\n\u003cp\u003eThe objective features a high numerical aperture of 0.70, delivering excellent resolution and measurement precision for detailed surface analysis. With a compact design and 60 mm parfocal distance, it allows efficient integration into interferometric systems while maintaining a 2 mm working distance suitable for high-magnification metrology applications.\u003c\/p\u003e\n\u003cp\u003eOptimised for the visible spectral range, the WLI Plan Apo 50X is ideal for precision surface metrology, micro-topography measurement, and advanced inspection tasks.\u003c\/p\u003e\n\u003cp\u003eKey Features\u003c\/p\u003e\n\u003cp\u003eDesigned specifically for white light interferometry (WLI)\u003c\/p\u003e\n\u003cp\u003eBeam splitter and reference mirror integrated inside the objective\u003c\/p\u003e\n\u003cp\u003eInterference fringe adjustment mechanism included as standard\u003c\/p\u003e\n\u003cp\u003eHigh numerical aperture (0.70) for enhanced resolution\u003c\/p\u003e\n\u003cp\u003eCompact and lightweight design\u003c\/p\u003e\n\u003cp\u003eParfocal distance: 60 mm for compact system integration\u003c\/p\u003e\n\u003cp\u003eHigh-quality Plan Apochromat optical design\u003c\/p\u003e\n\u003cp\u003eInfinity corrected\u003c\/p\u003e\n\u003cp\u003eSpecifications\u003c\/p\u003e\n\u003cp\u003eModel: WLI Plan Apo 50X\u003c\/p\u003e\n\u003cp\u003eMagnification: 50x\u003c\/p\u003e\n\u003cp\u003eWorking distance: 2 mm\u003c\/p\u003e\n\u003cp\u003eNumerical Aperture (N.A.): 0.70\u003c\/p\u003e\n\u003cp\u003eResolving power: 0.39 µm\u003c\/p\u003e\n\u003cp\u003eFocal length (f): 2 mm\u003c\/p\u003e\n\u003cp\u003eParfocal distance (P.D.): 60 mm\u003c\/p\u003e\n\u003cp\u003eApplicable tube lens focal length: 100 mm\u003c\/p\u003e\n\u003cp\u003eField of view (2\/3\" camera): 0.13 × 0.18 mm\u003c\/p\u003e\n\u003cp\u003eField of view (WLI Unit): 0.14 × 0.11 mm\u003c\/p\u003e\n\u003cp\u003eObservation mode: Interferometer\u003c\/p\u003e\n\u003cp\u003eGlass compensation: No\u003c\/p\u003e\n\u003cp\u003eLaser applications: No\u003c\/p\u003e\n\u003cp\u003eSpectral range: Visible (VIS)\u003c\/p\u003e\n\u003cp\u003eMount: RMS (20.32 mm × 36 TP)\u003c\/p\u003e\n\u003cp\u003eOuter diameter: 40 mm\u003c\/p\u003e\n\u003cp\u003eMirror tube length (excluding mounting screws): 58 mm\u003c\/p\u003e\n\u003cp\u003eMass: 300 g\u003c\/p\u003e","brand":"Mitutoyo","offers":[{"title":"Default Title","offer_id":56437813281148,"sku":"378-403","price":6102.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/9428\/5114\/files\/Mitutoyo378-403WLIPlanApo50xMirauType.jpg?v=1772650670","url":"https:\/\/www.hroberts-di.com\/products\/mitutoyo-378-403-wli-plan-apo-50x-mirau-type","provider":"H Roberts \u0026 Sons","version":"1.0","type":"link"}