20X Objective NA 0.4 FN 22.0 WD 3.2 mm

20X Achromat Dry Pre-Centered Phase Objective. Numerical Aperture: 0.4, Working Distance: 3.2mm, RMS Threading, Field Number: 22. For CKX53 microscopes. *Requires CKX3-SLP pre-centered slider

• Numerical Aperture (NA): 0.4
• Working Distance (WD) [mm]: 3.2
• Objective Field Number: 22
• Coverglass Thickness [mm]: 1
• Immersion Medium: Air/Dry
• Correction Collar: N/A
• Objective Type: Achromat
• Parfocal Distance [mm]: 45
• Back Focal Plane (BFP) Position [mm]: -10.2
• Mounting Threads: W20.32X0.706(RMS)
• Reflected Brightfield (BF): N/A
• Transmitted Brightfield (BF): Good
• Reflected Darkfield (DF): N/A
• Transmitted Darkfield (DF): Limitation
• Reflected DIC (Visible): N/A
• Transmitted DIC (Visible): N/A
• Polarization (PO): Limitation
• Fluorescence (B & G excitation): Limitation
• Fluorescence (UV excitation : 365nm): N/A
• Multi photon excitation (MPE): N/A
• Compatible for Autofocus: N/A
• IR Through Si or Glass: N/A
• TIRF (Total Internal Reflection Fluorescence): N/A
• WLI (White Light Interferometry): N/A
• 340nm Transmittance: N/A
• 700-1000nm Transmittance: N/A
• 1000-1300nm Transmittance: N/A
• Magnification: 20
• Relief Contrast (RC): N/A
• Phase Contrast (PH): Excellent
• With Coverglass: Yes
• Variable Coverglass: N/A
• Without Coverglass: N/A