{"product_id":"20x-triplet-hexagon-loupe-20-5mm","title":"20x Triplet Hexagon Loupe","description":"\u003cp\u003eThis 20x triplet loupe features three bonded lenses that are highly corrected for both spherical and chromatic aberrations. The hexagon-shaped body houses a 20.5mm diameter lens, delivering sharp, corrected magnification ideal for close-detail inspection tasks such as viewing laser inscriptions on diamond girdles and other precision examination work where high magnification is required.\u003c\/p\u003e\u003cp\u003eIt is important to understand that 20x loupes are not used for standard gemological diamond grading — that application requires a 10x triplet loupe. The 20x magnification is best suited for tasks requiring greater enlargement beyond what a 10x loupe can provide.\u003c\/p\u003e\u003cp\u003eDue to the laws of optics, all 20x loupes — regardless of lens diameter — produce a very small field of focus and a shallow depth of field. As magnification increases, the in-focus area decreases significantly compared to lower-power loupes. Notably, the 20.5mm lens diameter of this loupe will yield the same in-focus area as an 18mm lens at the same 20x magnification. This is a characteristic of the optics, not a limitation of this specific loupe.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e20x magnification for high-detail inspection tasks\u003c\/li\u003e\n\u003cli\u003eTriplet construction — three bonded lenses corrected for spherical and chromatic aberrations\u003c\/li\u003e\n\u003cli\u003eHexagon-shaped body with a 20.5mm diameter lens\u003c\/li\u003e\n\u003cli\u003eSuitable for viewing laser inscriptions on girdles and other precision inspection work\u003c\/li\u003e\n\u003cli\u003eCustom imprinting available with a minimum order of 100 loupes — additional art charges apply; allow 6 weeks for delivery\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMagnification\u003c\/th\u003e\n\u003ctd\u003e20x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLens Type\u003c\/th\u003e\n\u003ctd\u003eTriplet (three bonded lenses)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLens Diameter\u003c\/th\u003e\n\u003ctd\u003e20.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Shape\u003c\/th\u003e\n\u003ctd\u003eHexagon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLens Correction\u003c\/th\u003e\n\u003ctd\u003eCorrected for spherical and chromatic aberrations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e20x triplet hexagon loupe\u003c\/li\u003e\n\u003cli\u003eSoft leather case\u003c\/li\u003e\n\u003cli\u003eCardboard box\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003e20x loupes are not recommended for standard diamond grading, which requires a 10x triplet loupe. All 20x loupes, regardless of lens size, produce an inherently small field of focus and shallow depth of field — this is a property of high-magnification optics. Custom imprinting is available for orders of 100 or more loupes; please contact us for details and pricing. Allow 6 weeks for delivery on custom orders.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43582409015510,"sku":"129.659","price":28.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/20x-triplet-hexagon-loupe-otto-frei.jpg?v=1719957058","url":"https:\/\/www.ottofrei.com\/products\/20x-triplet-hexagon-loupe-20-5mm","provider":"Otto Frei","version":"1.0","type":"link"}