{"product_id":"olympus-plan-n-4x-objective","title":"Olympus Plan N 4X Microscope Objective (PLN4X, NA 0.10, Infinity)","description":"\u003cp class=\"MsoNormal\" style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\u003cstrong\u003eOlympus Plan N 4× Microscope Objective (PLN4X, NA 0.10, Infinity)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e🔬 4× magnification, NA 0.10\u003cbr\u003e\n🧠 Plan optical design with flat field correction\u003cbr\u003e\n📸 High transmission across visible spectrum\u003cbr\u003e\n📏 Long working distance (~16.5 mm)\u003cbr\u003e\n⚙️ Standard RMS thread compatibility\u003cbr\u003e\n🎓 University purchase orders accepted\u003c\/p\u003e\n\u003chr\u003e\n\u003cp class=\"MsoNormal\" style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\u003cstrong\u003e🔧 Product Description\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003eThe Olympus Plan N 4× objective (PLN4X) is a high-quality low-power lens designed for overview and wide-field imaging in laboratory, clinical, and educational settings. With 4× magnification and a numerical aperture of 0.10, this objective delivers a broad field of view paired with consistent clarity—ideal for surveying slides, mapping sample regions, and imaging larger specimens prior to switching to higher magnifications. The Plan optical design corrects common optical distortions such as chromatic and spherical aberrations, providing flat, crisp imaging across the entire field. This makes it especially useful for brightfield microscopy, initial specimen scanning, and documentation tasks where uniform image quality is essential. The working distance of approximately 16.5 mm gives researchers ample space between the specimen and objective lens, which is particularly beneficial when using auxiliary tools or sample holders during preliminary imaging. The standard RMS threaded mount ensures broad compatibility with most upright microscopes used in research, teaching, and clinical laboratories.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp class=\"MsoNormal\" style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\u003cstrong\u003e🔎 Typical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\n\u003cli\u003eLow-power brightfield microscopy\u003c\/li\u003e\n\u003cli\u003eSlide and specimen overview imaging\u003c\/li\u003e\n\u003cli\u003eEducational and teaching laboratories\u003c\/li\u003e\n\u003cli\u003eDocumentation of large fields\u003c\/li\u003e\n\u003cli\u003ePreparatory imaging before high-magnification objectives\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp class=\"MsoNormal\" style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\u003cstrong\u003e📊 Key Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"font-family: 'Segoe UI Emoji', sans-serif; border-collapse: collapse; width: 100%;\"\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eOlympus PLN4X (Plan N 4×)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification\u003c\/td\u003e\n\u003ctd\u003e4×\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumerical Aperture (NA)\u003c\/td\u003e\n\u003ctd\u003e0.10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003ePlan (flat field correction)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical System\u003c\/td\u003e\n\u003ctd\u003eInfinity-corrected\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Distance\u003c\/td\u003e\n\u003ctd\u003e~16.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Number\u003c\/td\u003e\n\u003ctd\u003e26.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength Range\u003c\/td\u003e\n\u003ctd\u003e~380–700 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount\u003c\/td\u003e\n\u003ctd\u003eRMS (20.32 × 36 TPI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImmersion Medium\u003c\/td\u003e\n\u003ctd\u003eAir (dry)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParfocal Length\u003c\/td\u003e\n\u003ctd\u003e~45 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCover Glass\u003c\/td\u003e\n\u003ctd\u003eNone required (dry objective)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003cp class=\"MsoNormal\" style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\u003cem\u003eUniversity purchase orders accepted. Contact us for institutional pricing and delivery options.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\u003cem\u003eLast updated: March 17, 2026\u003c\/em\u003e\u003c\/p\u003e","brand":"spachoptics","offers":[{"title":"Default Title","offer_id":51695437414701,"sku":"N1215700","price":145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/7965\/8029\/files\/OLYMPUS-PLN4X-2.jpg?v=1765523995","url":"https:\/\/www.spachoptics.com\/products\/olympus-plan-n-4x-objective","provider":"Spach Optics, Inc.","version":"1.0","type":"link"}