{"product_id":"lumaspec-ls-tcl-2240","title":"3.5x, WD 108 mm, 1.1\", C-mount telecentric lens (LS-TCL-2240)","description":"\u003cp\u003eLS-TCL-2240, the version without coaxial illumination, offers 3.5x magnification, one of the higher magnifications in the series, for finer detail (an object field of about 5.1 mm across on an 18 mm sensor). You also get a theoretical depth of field of ±0.08 at F23.3.\u003c\/p\u003e\u003cp\u003eAt a glance: max sensor size 18.0 mm (1.1\"); object-side resolution 4.5 µm.\u003c\/p\u003e\u003cp\u003eWith rays within 0.08° of parallel on the object side, a 1 mm height step shifts an edge by at most about 1.4 µm on the part (tan 0.08° x 1 mm), about 4.9 µm on the sensor at 3.5x, so parts at different heights measure the same. It holds 30 % contrast up to 40 lp\/mm on the sensor, about 140 lp\/mm on the part at 3.5x, so a camera with pixels of about 12 µm or finer records all the detail it passes (two pixels per line pair). An M32.0 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 3x and 4x versions in the series\u003c\/li\u003e\n\u003cli\u003eNumerical aperture 0.0752\u003c\/li\u003e\n\u003cli\u003e0.05 % distortion: a corner point of the 5.1 mm field lands within about 1.3 µm of its true place\u003c\/li\u003e\n\u003cli\u003eTelecentricity under 0.08°: a 1 mm change in part height moves an edge by under about 1.4 µm\u003c\/li\u003e\n\u003cli\u003eSeparates details about 4.5 µm apart on the part: about 900 across the 4 mm wide field\u003c\/li\u003e\n\u003cli\u003eImage-side aperture F23.3\u003c\/li\u003e\n\u003cli\u003e3.5x magnification at 108 mm working distance\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\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eLS-TCL-2240\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\u003e3.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorking distance (mm)\u003c\/th\u003e\n\u003ctd\u003e108\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\u003e23.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eImage-side MTF30 (lp\/mm)\u003c\/th\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTheoretical depth of field (mm)\u003c\/th\u003e\n\u003ctd\u003e±0.08@F23.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eObject-side resolution (um)\u003c\/th\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumerical aperture NA\u003c\/th\u003e\n\u003ctd\u003e0.0752\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eImage-side distortion (% max)\u003c\/th\u003e\n\u003ctd\u003e0.05\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eObject-side telecentricity (deg max)\u003c\/th\u003e\n\u003ctd\u003e0.08\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal length TTL (mm)\u003c\/th\u003e\n\u003ctd\u003e182.7\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\u003eM32.0x0.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping weight (estimated)\u003c\/th\u003e\n\u003ctd\u003e0.51 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":53080045420826,"sku":"LS-TCL-2240","price":1259.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1018\/5434\/7546\/files\/ls-tcl-2240-drawing-1.webp?v=1792789720","url":"https:\/\/lumaspecvision.com\/products\/lumaspec-ls-tcl-2240","provider":"LumaSpec Vision","version":"1.0","type":"link"}