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Scanning lenses, explained by RP Photonics Encyclopedia; flat-field scanning, f-theta distortion, telecentric lenses
Telecentric Scan Lenses for CO2 10.6um/9.6um
Good Selling High Quality Modern Simplicity High Hardness Optical Flat Field Lens - China Field Lens and Telecentric Field Lens
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Svbony Telescope Eyepiece 1.25" Uf10mm/18mm Ultra Flat Field Eyepiece Fmc Sv190 - Eyepiece/eyepiece Suit - AliExpress
MISCELLANEOUS TELESCOPE OPTICS
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Scienscope CC-97-LN1-C
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4,5/90mm Flat Field Lens w/Lens Hood (FLEX-APO-DIGI) | Novoflex
Flat-Field Lenses and Why They Matter When Shooting Close-Ups | B&H eXplora
lens - What does "Flat Field Focus" mean? - Photography Stack Exchange
Flat-Field Lenses and Why They Matter When Shooting Close-Ups | B&H eXplora
Amazon.com : Celestron 18mm Flat Field Eyepiece - 1.25" : Electronics
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Amazon.com : Astromania 1.25" 16mm Premium Flat Field Eyepiece - a Flat Image Field and Crystal-Clear Images : Electronics
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Scanning Systems Help Lasers Make Their Mark | Features | Jul 2003 | Photonics Spectra
BETAMAG 12X WIDE FLAT FIELD, COLOR CORRECT, DISTORTION FREE MAGNIFIER | Beta Screen Corporation
VINTAGE STEINHELL OPTRONIC 56mm 1.9 FLAT FIELD LENS WITH PRONTOR PRESS SHUTTER M | eBay
Omegon 1.25'', 19mm flat field eyepiece
