MAGUS 20PLL 20x/0.40 Plan L Objective WD 8.80 mm

MAGUS 20PLL 20x/0.40 Plan L WD 8.80 mm Objective
Infinity-corrected plan achromatic objective. Magnification: 20x. Aperture: 0.40

20x magnification objective for a metallurgical microscope.
It is optimal for working with eyepieces with 10x to 20x magnification. The useful magnification of a microscope with this objective is in the range of 200–400x; its maximum resolution is 0.69 µm.

The plan achromatic optics correct field curvature by 90% and produce a clear, undistorted image across almost the entire field of view. It is recommended to combine the objective with eyepieces with a wide field of view (22 mm). The combination with a 10x/22 mm eyepiece will produce a field of view 1.1 mm in diameter. Chromatic aberration is corrected for red and blue, and spherical aberration is corrected for green.

A metallurgical objective requires operation without a cover slip. The object of study may have a texture with large height differences, and with a standard objective position, there is a risk of damaging the objective or the sample. For this reason, the MAGUS 20PLL metallurgical microscope objective has a non-standard working distance of 8.8 mm.

The objective is compatible with infinity-corrected microscopes. Its parfocality is 45 mm. 

Compatibility:
MAGUS Metal 600 Metallurgical Microscope
MAGUS Metal 630 Metallurgical Microscope
MAGUS Metal 650 Metallurgical Microscope
MAGUS Metal V700 Metallurgical Inverted Microscope

Specifications

Lens material: optical glass
Objective class by aberration correction degree: plan achromatic
Tube length: infinity-corrected (∞)
Contrast technique: brightfield
Magnification, x: 20
Aperture: 0.40
Working distance, mm: 8.80
Parfocal distance, mm: 45
Coverslip thickness, mm: no coverslip
Spring mechanism: −
Immersion: −
Body material: copper