Objectives for NIR Specifications Abbreviations in product table N.A.: Numerical aperture W.D.: Working distance P.D.: Parfocal distance f: Focal distance R: Resolving power D.F.: Depth of field FOV 1: Field of view when using ø24 mm eyepiece FOV 2: Field of view when using a digital camera with 1/2" chip size M Plan Apo NIR B Note: This series of objective has greatly improved in operability thanks to the achievement of an ultralong working distance of 25,5 mm while maintaining the NA of the NIR series 20X/50X. M Plan Apo NIR Note: These objective lenses are designed so that the image of a workpiece remains focused within the focal depth even when the wavelength used is changed from within the visible range up to the near-infrared (480 to 1800 nm). Therefore the M Plan NIR Series are suitable for laser repair. However, when the wavelength used exceeds 1100 nm, the focussing position may deviate slightly from that in the visible range due to changes in glass dispersion and refractive index. Refer to the microscope units and objective lenses brochure M Plan Apo NIR B Features • Infinity Corrected • Suitable for Bright Field Inspection and Laser Applications • Long Working Distance 25,5 mm • High Quality Plan Apochromat Design • Wavelength Correction from Visible to Near Infrared (1800 nm) No. Model Magnification N.A. W.D. [mm] P.D. [mm] f [mm] R [μm] D.F. [μm] FOV 1 [mm] FOV 2 [mm] Mass [g] 378-867-5 M Plan Apo NIR B 20X 20x 0,4 25,5 95 10 0,7 1,7 ø1,2 0,24 x 0,32 350 378-868-5 M Plan Apo NIR B 50X 50x 0,42 25,5 95 4 0,7 1,6 ø0,48 0,24 x 0,13 375 25.5 ø37 69.5 95(P.D.) 5 ø37 M Plan Apo NIR B 20X 25.5 ø37 69.5 95(P.D.) 5 ø37 M Plan Apo NIR B 50X All products to be sold to commercial customers. Product illustrations are without obligation. Product descriptions, in particular any and all technical specifications, are only binding when explicitly agreed upon. 429
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