{"product_id":"lumaspec-ls-tcl-2257","title":"0.55x, WD 220 mm, 1.1\", C-mount telecentric lens (LS-TCL-2257)","description":"\u003cp\u003e0.55x magnification (1.1\"-format, without coaxial illumination) makes LS-TCL-2257 one of the higher magnifications in the series (an object field of about 32.7 mm across on an 18 mm sensor). It has a theoretical depth of field of ±1.3 at F10.1.\u003c\/p\u003e\u003cp\u003eAt a glance: max sensor size 18.0 mm (1.1\"); object-side resolution 12.4 µm.\u003c\/p\u003e\u003cp\u003eWith rays within 0.1° of parallel on the object side, a 1 mm height step shifts an edge by at most about 1.7 µm on the part (tan 0.1° x 1 mm), about 0.96 µm on the sensor at 0.55x, so parts at different heights measure the same. It holds 30 % contrast up to 90 lp\/mm on the sensor, about 50 lp\/mm on the part at 0.55x, so a camera with pixels of about 5.6 µm or finer records all the detail it passes (two pixels per line pair). An M50 x 0.5 filter thread takes a polarizer, band-pass or protective window.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBetween the 0.5x and 0.6x versions in the series\u003c\/li\u003e\n\u003cli\u003eCovers sensors up to 1.1\" (18 mm diagonal) without dark corners; a larger sensor would vignette\u003c\/li\u003e\n\u003cli\u003e0.1 % distortion: a corner point of the 32.7 mm field lands within about 16.4 µm of its true place\u003c\/li\u003e\n\u003cli\u003eTelecentricity under 0.1°: a 1 mm change in part height moves an edge by under about 1.7 µm\u003c\/li\u003e\n\u003cli\u003eSeparates details about 12.4 µm apart on the part: about 2,100 across the 25.6 mm wide field\u003c\/li\u003e\n\u003cli\u003eImage-side aperture F10.1\u003c\/li\u003e\n\u003cli\u003e0.55x magnification at 220 mm working distance\u003c\/li\u003e\n\u003cli\u003eNumerical aperture 0.02712\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eLS-TCL-2257\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMount\u003c\/th\u003e\n\u003ctd\u003eC-mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMagnification (x)\u003c\/th\u003e\n\u003ctd\u003e0.55\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorking distance (mm)\u003c\/th\u003e\n\u003ctd\u003e220\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSensor format\u003c\/th\u003e\n\u003ctd\u003e1.1\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax sensor size (dia. mm)\u003c\/th\u003e\n\u003ctd\u003e18.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eImage-side F\/#\u003c\/th\u003e\n\u003ctd\u003e10.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eImage-side MTF30 (lp\/mm)\u003c\/th\u003e\n\u003ctd\u003e\u0026gt;90\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTheoretical depth of field (mm)\u003c\/th\u003e\n\u003ctd\u003e±1.3@F10.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eObject-side resolution (um)\u003c\/th\u003e\n\u003ctd\u003e12.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumerical aperture NA\u003c\/th\u003e\n\u003ctd\u003e0.02712\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eImage-side distortion (% max)\u003c\/th\u003e\n\u003ctd\u003e\u0026lt;0.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eObject-side telecentricity (deg max)\u003c\/th\u003e\n\u003ctd\u003e\u0026lt;0.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal length TTL (mm)\u003c\/th\u003e\n\u003ctd\u003e215.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoaxial illumination\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFront filter thread\u003c\/th\u003e\n\u003ctd\u003eM50x0.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMeasured depth of field as shipped (mm)\u003c\/th\u003e\n\u003ctd\u003e1.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping weight (estimated)\u003c\/th\u003e\n\u003ctd\u003e0.86 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003ePhoto shows a representative model of this series; see the specifications for this model.\u003c\/em\u003e\u003c\/p\u003e","brand":"LumaSpec Vision","offers":[{"title":"Default Title","offer_id":53080047517978,"sku":"LS-TCL-2257","price":1559.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1018\/5434\/7546\/files\/ls-tcl-2257-drawing-1.webp?v=1792789805","url":"https:\/\/lumaspecvision.com\/products\/lumaspec-ls-tcl-2257","provider":"LumaSpec Vision","version":"1.0","type":"link"}