{"product_id":"mitutoyo-378-868-5-m-plan-apo-nir-b-50x-objective-for-bright-field-observation-in-near-infrared-range-wd-25-5mm","title":"Mitutoyo 378-868-5 M Plan Apo NIR B 50X Objective for bright-field observation in near-infrared range, WD: 25.5mm","description":"\u003cp\u003eThe M Plan Apo NIR B 50X is a high-performance plan apochromat objective designed for bright field inspection and laser-based applications requiring extended clearance and stable multi-wavelength performance.\u003c\/p\u003e\n\u003cp\u003eOptimised for wavelength correction from 420–1064 nm (Visible to Near-Infrared), this objective ensures reliable imaging across a broad spectral range, making it well suited for inspection and laser processing applications.\u003c\/p\u003e\n\u003cp\u003eA key feature of the NIR B series is its ultra-long 25.5 mm working distance, significantly improving operability while maintaining the same numerical aperture performance as the standard NIR 20X\/50X models. This extended clearance allows easier access to larger components and complex setups without compromising image quality.\u003c\/p\u003e\n\u003cp\u003eEngineered with an infinity-corrected optical design, the M Plan Apo NIR B 50X delivers flat-field imaging, excellent chromatic correction, and stable focus performance when switching between wavelengths within its specified range.\u003c\/p\u003e\n\u003cp\u003eKey Features\u003c\/p\u003e\n\u003cp\u003eSuitable for bright field inspection and laser-based applications\u003c\/p\u003e\n\u003cp\u003eWavelength correction from 420–1064 nm (Visible to Near-Infrared)\u003c\/p\u003e\n\u003cp\u003eUltra-long 25.5 mm working distance for improved operability\u003c\/p\u003e\n\u003cp\u003eHigh-quality Plan Apochromat optical design\u003c\/p\u003e\n\u003cp\u003eInfinity corrected\u003c\/p\u003e\n\u003cp\u003eMaintains NA performance while extending working distance\u003c\/p\u003e\n\u003cp\u003eSpecifications\u003c\/p\u003e\n\u003cp\u003eModel: M Plan Apo NIR B 50X\u003c\/p\u003e\n\u003cp\u003eMagnification: 50x\u003c\/p\u003e\n\u003cp\u003eWorking distance (in air): 25.5 mm\u003c\/p\u003e\n\u003cp\u003eNumerical Aperture (N.A.): 0.42\u003c\/p\u003e\n\u003cp\u003eCorrected wavelength range: 420–1064 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): ø0.48 mm\u003c\/p\u003e\n\u003cp\u003eField of view (1\/2” camera chip): 0.24 × 0.13 mm\u003c\/p\u003e\n\u003cp\u003eParfocal distance (P.D.): 95 mm\u003c\/p\u003e\n\u003cp\u003eSpectral range: NIR\u003c\/p\u003e\n\u003cp\u003eObservation mode: Brightfield\u003c\/p\u003e\n\u003cp\u003eGlass compensation: No\u003c\/p\u003e\n\u003cp\u003eHigh Resolution: No\u003c\/p\u003e\n\u003cp\u003eMass: 375 g\u003c\/p\u003e","brand":"Mitutoyo","offers":[{"title":"Default Title","offer_id":56428535579004,"sku":"378-868-5","price":2547.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/9428\/5114\/files\/2Mitutoyo378-868-5MPlanApoNIRB50XObjectiveforbright-fieldobservationinnear-infraredrange_WD-25.5mm.jpg?v=1772482385","url":"https:\/\/www.hroberts-di.com\/products\/mitutoyo-378-868-5-m-plan-apo-nir-b-50x-objective-for-bright-field-observation-in-near-infrared-range-wd-25-5mm","provider":"H Roberts \u0026 Sons","version":"1.0","type":"link"}