Leitz PL Fluotar 20x D objective
$180.00
Leitz (marked �Leitz Wetzlar Germany�) microscope objective for metallurgical instruments, of Plan Fluotar correction. �Plan� objectives are corrected to display a perfectly flat image of up to 28mm in diameter, while Fluotar objectives are highly color corrected (although not quite as good as the apochromats).
Magnification: 20x
Numerical Aperture: 0.45na
Infinity corrected
Thread size 32mm
Must be used WITHOUT cover glass
Built-in annular condenser for dark field illumination
Red engraving denotes strain-free condition of optics (suitable for polarized light techniques, including interference contrast)
Working Distance:
Leica catalog number: 567 016
The large thread size accommodates the darkfield illumination annular optics. This objective will only work on the more recent Leitz (and Leica Microsystems) microscopes that have 32mm diameter thread positions on the nosepiece. These include the DMR series instruments, as well as the DM4000 through DM6000 instruments, as well as the earlier Leitz Ergoplan microscope.
The objective is in near-perfect condition, and the glass is flawless..
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***MPN 567 016
***OEM Leitz
***SKU*** DP436
1 in stock
CompareProduct Description
Leitz (Leica) PL Fluotar 20x D Metallurgical Microscope Objective (Finite 160mm Tube Length)
This is a Leitz (Leica) PL Fluotar 20x D microscope objective, designed for metallurgical (reflected light) applications. The “D” designation often indicates suitability for Differential Interference Contrast (DIC) or enhanced contrast in reflected light imaging. Part of the premium Fluotar series, it offers plan-corrected flat field and high transmission for bright, detailed imaging of opaque samples. Compatible with Leitz/Leica microscopes using 160mm finite tube length and RMS thread.
Key Specifications:
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Magnification: 20x
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Optical Design: PL Fluotar – Plan-corrected, Fluorite-grade glass for high transmission and low autofluorescence
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Type: Metallurgical (reflected light) – corrected for no cover glass
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Special Feature: “D” marking – typically indicates DIC (Nomarski) compatibility for enhanced contrast
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Mechanical Tube Length: Finite 160mm (for Leitz/Leica DM R, Metalloplan, Orthoplan, etc.)
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Thread: RMS (Royal Microscopical Society standard)
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Numerical Aperture (NA): Likely ~0.40–0.50 (provides good resolution and working distance balance)
Potential Uses:
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Leitz/Leica Microscope Restoration: Replacement objective for restoring a finite 160mm metallurgical or materials microscope.
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Component Salvage: High-quality Fluotar lens elements, anti-reflection coatings, and precision lens barrel.
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Custom Optical Setup: Use in a DIY reflected light microscope, macro imaging system, or specialized inspection station.
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Collector’s Item: For enthusiasts of Leitz/Leica optics and vintage microscopy.
Important Notes:
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Compatibility: This is a finite 160mm tube length objective. It is not compatible with infinity-corrected microscopes.
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DIC Requirement: To utilize DIC contrast, a compatible Leitz/Leica DIC prism and polarizing optics are required in the microscope.
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Inspection Advised: Due to unknown optical condition, inspection by a microscope service professional is recommended before critical use.
| Weight | 1.1 lbs |
|---|---|
| Dimensions | 3 × 3 × 4 in |
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