This is description of this part:
Carl Zeiss (West Germany) microscope objective for phase contrast.
Basic parameters:
Manufacturer: Zeiss
Designation: Ph2 40/0.65 160/0.17
Manufacturer's number: 46 07 01 - 9903
Magnification: 40x
Correction: achromatic
Numerical aperture N.A.: 0.65
Tube length: 160 mm
Focal length: 45 mm
Cover glass: yes, 0.17 mm
Immersion: no
Thread: RMS
Ph2: phase contrast
This particular specimen was used in a Zeiss KM microscope, but I have also seen this objective model in Zeiss KF-2 ICS and Zeiss Axiostar microscopes. It fits many microscope models from this manufacturer; some examples are listed in the "compatibility" section.
It can be used with any microscope from any manufacturer together with a suitable phase-contrast condenser (or a phase-ring slider). Of course, the microscope must be compatible, i.e. support RMS objectives, TL=160 mm and FL=45 mm.
What is this part needed for?
- If you have a microscope without objectives and need to restock it using original parts
- If you have a microscope that doesn't have an objective lens with this magnification and want to restock it
- If you have such an objective lens, but it's of very poor quality or damaged
- If you're cautious and want to have a spare objective lens
