{"product_id":"omax-40x-achromatic-objective-lens-spring-high-na-0-65","title":"OMAX 40X Achromatic Objective Lens (Spring) - High NA 0.65","description":"\u003cp\u003eIn this review the OMAX 40X achromatic objective lens is evaluated for hobbyists, students, and lab users seeking a reliable midrange magnification option. The bottom line: it delivers clear optical performance with a relatively high numerical aperture for a 40X lens, and the spring-loaded mount protects both the lens and slides during routine use. For anyone fitting a DIN 160\/0.17 microscope tube and wanting a compact, serviceable 40X objective, this lens balances optical quality and practical durability.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e40X Magnification:\u003c\/strong\u003e Provides a useful midlevel magnification suited to cell observation and detailed specimen work without excessive working distance compromise.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh Numerical Aperture:\u003c\/strong\u003e The NA 0.65 improves resolution and light-gathering compared with lower NA 40X options, yielding crisper detail on brightfield samples.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDIN 160\/0.17 Compatibility:\u003c\/strong\u003e The lens conforms to standard tube length and cover glass thickness, making it compatible with many compound microscope setups that use DIN specifications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSpring Loaded Design:\u003c\/strong\u003e The spring mechanism protects the front element and delicate slides by allowing slight retraction on accidental contact, reducing risk of damage.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact Mount:\u003c\/strong\u003e The 20mm threaded mount makes installation straightforward on compatible nosepieces and keeps the lens stable during focusing.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e A one-year warranty against manufacturing defects provides reasonable assurance for initial reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe OMAX 40X achromatic objective is best for undergraduate labs, microscopy hobbyists, and educators who need a dependable 40X option with improved resolution thanks to its NA 0.65. Its DIN 160\/0.17 design fits many classic and modern compound microscopes, so it is useful for users replacing or upgrading a single objective.\u003c\/p\u003e\n\u003cp\u003eUsers who need specialized contrast techniques beyond standard achromatic performance or who require long working distance objectives for thick samples should look elsewhere, since this lens focuses on conventional brightfield use with a 1.0mm working distance and standard cover glass compatibility.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eSolid optical performance for the price with a relatively high \u003cstrong\u003eNA 0.65\u003c\/strong\u003e that improves resolution.\u003c\/li\u003e\n \u003cli\u003eSpring-loaded protection reduces risk to both lens and slides during routine handling.\u003c\/li\u003e\n \u003cli\u003eStandard \u003cstrong\u003eDIN 160\/0.17\u003c\/strong\u003e spec ensures broad compatibility with many microscopes.\u003c\/li\u003e\n \u003cli\u003eIncluded screw-on case helps keep the lens safe in storage and transport.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eThe short 1.0mm working distance may limit use with thicker specimens or some mounting techniques.\u003c\/li\u003e\n \u003cli\u003eAs an achromatic objective it is not optimized for advanced chromatic aberration correction like apochromatic lenses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eMagnification\u003c\/td\u003e\n\u003ctd\u003e40X\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNumerical Aperture\u003c\/td\u003e\n\u003ctd\u003e0.65\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eDIN 160\/0.17 achromatic\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eField of View\u003c\/td\u003e\n\u003ctd\u003e0.45mm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eWorking Distance\u003c\/td\u003e\n\u003ctd\u003e1.0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMount Size\u003c\/td\u003e\n\u003ctd\u003e20mm thread (spring)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1-year against manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe OMAX 40X achromatic objective is a smart, value-minded choice for students and hobbyists who need dependable 40X performance with better resolution than lower NA lenses. Its spring-loaded mount and DIN compatibility make it easy to install and forgiving in daily use, though those needing long working distance or apochromatic correction should consider specialty objectives. Overall it is a practical replacement or upgrade for standard compound microscopes.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this lens compatible with my microscope?\u003c\/strong\u003e\u003cbr\u003eIt is compatible with microscopes that accept DIN 160\/0.17 objectives and a 20mm threaded mount; confirm your nosepiece accepts 20mm threads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the spring feature affect imaging?\u003c\/strong\u003e\u003cbr\u003eThe spring is a protective mechanical feature and does not affect optical performance during normal use; it allows slight retraction on contact to protect the lens and slides.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is included in the package?\u003c\/strong\u003e\u003cbr\u003eThe packing list includes the DIN 40X achromatic objective lens and a screw-on protective case.\u003c\/p\u003e","brand":"OMAX","offers":[{"title":"Default Title","offer_id":48251298775259,"sku":"B00FG8BLZE","price":48.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/41QRhthRPRL._AC.jpg?v=1770977314","url":"https:\/\/gearmusthave.com\/products\/omax-40x-achromatic-objective-lens-spring-high-na-0-65","provider":"GearMustHave","version":"1.0","type":"link"}