Description
Achromatic microscope objective 20 × /0,4 is a medium-magnification dry lens with numerical aperture 0,4 and a working distance of 1,75 mm. The front is spring-loaded (retractable), reducing the risk of contact damage to the optics or specimen during focusing. Offered as 1 pc from manufacturer Kern, this objective suits compound microscopes in laboratory, education and routine inspection settings. Achromatic correction improves colour fidelity relative to uncorrected lenses, supporting clear viewing of stained and unstained samples at intermediate power. The 20 × /0,4 specification bridges overview and higher-magnification work on multi-objective nosepieces. Net weight is 0,30 kg and gross weight 0,60 kg; the pack measures 0,04 m in height, 0,065 m in width and 0,04 m in depth, with a packaging volume of 0,000104 m³. Positioned under microscopy accessories, the OBB-A1110 format is a practical choice where a spring-protected achromatic 20 × objective with 1,75 mm working distance is required for everyday brightfield observation.
This article is part of Microscope objectives, eyepieces & optics, in Microscopy & histology.
Key features
- Pack size: 1 pc
- Type: Achromatic objective
- Magnification / NA: 20 × /0,4
- Working distance: 1,75 mm
- Design: Spring-loaded (retractable)
- EAN: 4045761164499
- Technical Information Sheet:
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Questions about Microscope Objective KERN OBB-A1110
What is this article?
Microscope Objective KERN OBB-A1110 is the article on this page. Luminix Health distributes Kern for laboratory use. It sits in Microscope objectives, eyepieces & optics, inside Microscopy & histology, in Lab instruments.
An objective makes the resolution. Magnification and numerical aperture are the two numbers, and the tube length or the infinity correction has to match the microscope. An eyepiece mostly enlarges the image the objective already resolved. A mismatched objective does not become sharper by zooming.
A light microscope forms an image with glass lenses and transmitted or reflected light. A stereo microscope is the lower-magnification instrument for dissecting and for looking at a surface. Fluorescence needs a light source and filters matched to the dye. Histology is the preparation that makes a tissue readable: fixation, a cassette, a section, a stain. The objective's magnification and numerical aperture decide the resolution. The slide and the cover glass decide whether the section sits in the focal plane. Stains and dyes as substances are identified on PubChem. Papers on the methods are on PubMed.
Which category should I open next?
The category is Microscopy & histology. The sub-category is Microscope objectives, eyepieces & optics. The catalogue is Lab instruments.
Shelves beside this one are Microscope slides & cover glasses, Histology cassettes & moulds, Counting chambers & haemocytometers, Stereo microscopes, Light & fluorescence microscopes, Histology reagents & consumables, Microscopy accessories, Cold light sources & lighting and Digital & USB microscopes.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.