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Objective LD "A-Plan" 20x/0.30 Ph1 Var1

Objective LD "A-Plan" 20x/0.30 Ph1 Var1

Item no.: 000000-1006-592
(no longer available)

Objective LD "A-Plan" 20x/0.30 Ph1 Var1 (D=0-2) (WD=4.3mm when D=1mm)

Full Description
Magnification 20x
Numerical Aperture 0.3
Free Working Distance [mm] 4.3 at cover glass 1.0
Coverglass Thickness [mm] 0 - 2
Thread Type W0.8x1/36"
Immersion Without Immersion
Field of View [mm] 23
Parfocal Length [mm] 45.34
Long Distance Yes
Correction Ring
Optical System Infinity Color Corrected System (ICS)
Color Correction
Biomedical Applications
Fluorescence Yes
- Multichannel
- Ultraviolet Transmission
- Infra Red Transmission
BrightField Yes
DIC [Differential Interference Contrast]
High Contrast DIC
Phase Contrast Ph 1
VAREL Contrast Varel 1
Hoffman Modulation Contrast
Polarization Contrast
Materials (Reflected Light) Applications
Reflected Light DIC
High Contrast DIC
DIC with circular polarized light
Total Interference Contrast
Polarization Contrast
Definite Focus.2
Confocal Microscopy
- Ultra Violet
- VIS (visible light)
- NLO-IR / 2 Photon
Total Internal Reflection Fluorescence
  • Adapter M 27x0.75 / W 0.8 H "0"
    Adapter M 27x0.75 / W 0.8 H "0"
    Item no.: 000000-1095-168
Mechanical Dimensions
Transmittance curve
LD A-Plan

The series with large working distance represent the entry level for inverted microscopy. They are corrected for cover glass and vessel bottom thickness up to 2 mm. This means optimal in the main applications of LD objectives, such as observation through thicker cell culture vessels etc. But also the use of thinner cover glasses for example in the range of 0.17 to 0.6 mm is easily possible with the simple use of a cover glass cap. The available contrast methods are ranging from brightfield, phase contrast to VAREL, Hoffman Contrast up to PlasDIC, the Zeiss exclusive polarization optical differential interference contrast, that makes applications like ICSI now possible even in plastic vessels with high resolution and brilliant contrast. Of course they are also suitable for fluorescence applications with excitation wavelengths within the visible spectrum.

Objective LD "A-Plan" 20x/0.30 Ph1 Var1 (D=0-2) (WD=4.3mm when D=1mm)