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SERMIK_ID number under which this microscope part is placed in the database.
91043
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Zeiss Photomicroscope / Universal microscope lens wheel for Optovar magnification changer | spare part for photo intermediate tube
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Description of this part for the microscope.
Lens turret disc (the so-called lens wheel) for the "Optovar" magnification changer for Carl Zeiss Universal / Photomicroscope class microscopes.
In Zeiss
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Universal / Zeiss Photomicroscope class microscopes there is a rotating, turret-type "Optovar" magnification changer in the intermediate tube, above the objective nosepiece (not always - please note the remark on this further down in the description).
What I am offering here is the rotating lens wheel of this magnification changer together with the spring click-stop mechanism.
This item fits the magnification changer used in the following microscopes:
- Zeiss Universal
- Zeiss Photomicroscope I
- Zeiss Photomicroscope II
- Zeiss Photomicroscope III RS
- Zeiss Ultraphot
Some models of the Zeiss Universal microscope have no magnification changer in the intermediate tube.
The magnification changer turret offered here has 4 positions:
- PH - this is an empty position, because the Bertrand lens is located higher up in the intermediate tube, in a horizontally sliding tube, together with the prisms that split the light beam towards the photo port
- 1,25x - this is the lens of the basic magnification for observation
- 1,6x - additional magnification lens
- 2x - additional magnification lens
In addition, this item has a sheet-metal detent (the so-called click-stop) that locks the lens wheel in the exact position.
VERY IMPORTANT - this is not a complete "Optovar" magnification changer. It is a service part - a component for repairing a magnification changer.
This item is intended for those who already have such a magnification changer in their microscope, but it needs replacement or repair, for example because its lens (or one of its lenses) has come apart (delamination) or has been damaged by mould. In that case the item offered here can be used to replace the whole lens wheel, or a particular lens can be taken out of it.
Over the years the Carl Zeiss Photomicroscope series microscopes have acquired various names by which users commonly refer to them. These include, among others:
- Zeiss Photomikroskop
- PM, e.g. Zeiss PM II or Zeiss PM III
- Zeiss Phomi, e.g. Zeiss Phomi II
It should also be mentioned that the Zeiss Photomicroscope microscopes were sold under the Opton brand as well.
The last photo in the gallery shows the photo intermediate tube removed from a Carl Zeiss Photomicroscope III microscope, with an arrow indicating which item is meant and where this lens turret ring is located in that tube.
In addition, the film available in the video gallery shows this lens turret from various angles and the movement of its moving parts.
Names, descriptions, terms, and search contexts under which this part is searched.
- Zeiss Photomicroscope microscope repair parts
- Zeiss Photomicroscope magnification changer service and repair
- Zeiss Phomi Optovar Vergrößerungswechsler reparieren
- Zeiss Universal Mikroskop Linsen-Revolver für Optovar Vergrößerungswechsler
- Zeiss Ultraphot microscope Optovar
- Photomicroscope - there is fungus on the lens
- Zeiss Optovar - auf der Linse befindet sich Pilzbefall
- kolo čoček Optovar mikroskop Zeiss Photomicroscope
- rueda de lentes Optovar microscopio Zeiss Universal
- cambiador de aumentos Optovar microscopio Zeiss Photomicroscope
- ruota lenti Optovar microscopio Zeiss Universal
- cambio di ingrandimento Optovar microscopio Zeiss Photomicroscope
- Zeiss buy spare parts
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The number of pieces of this microscope part that we have to offer.
1
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Price in EURO for 1 piece of this microscope part. Price is negotiable.
39 €
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Name of the category to which this microscope part is classified.
Lenses
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Abbreviated and full name of the manufacturer of this microscope part.
Zeiss
Carl Zeiss West Germany
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Where has this microscope part been operating so far? From what microscope or larger microscope assembly was it removed?
Model name of the equipment in which this microscopic part previously operated.
Photomicroscope
Abbreviated name of the manufacturer of the equipment in which this microscopic part previously operated.
(Zeiss)
Here it is written whether this part was removed from a microscope or from a larger microscope part.
microscope
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List of microscope models this part is compatible with.
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A list of potential uses for this part and when it might be needed.
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if you have a microscope in which this item is missing
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as a repair part, in the form of replacing the whole damaged item
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if you have a microscope in which this item does work, but is of very poor quality, for example has individual damaged lenses
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if you want to use this magnification changer or its individual magnifying lenses for your own DIY project
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SERMIK_ID number under which this microscope part is placed in the database.
91045
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Zeiss Photomicroscope / Universal microscope Bertrand lens for DIC and phase contrast alignment | spare part for photo intermediate tube
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Description of this part for the microscope.
Amici-Bertrand lens for the photo intermediate tube of Carl Zeiss Universal / Photomicroscope class microscopes.
In Zeiss Universal / Zeiss Photomicroscope class
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microscopes, the intermediate tube (https://www.microscopeparts.eu/part/99571) contains a horizontally mounted barrel with a prism that splits the light towards the trinocular/photo port. The individual positions are switched by pulling and pushing the control knob (https://www.microscopeparts.eu/part/91040). The Amici-Bertrand lens, used for aligning DIC and the phase contrast rings, is mounted in the same place - and that is the lens presented here.
Why is this lens located in the light-splitting module, even though the PH marking is on the turret of the Optovar magnification changer? The reason is simple: the first Zeiss Universal models had no magnification changer, so the Amici-Bertrand lens was mounted next to the beam splitting prism and is swung in with the same knob that switches the photo mode. When the magnification changer (with the 1.25x / 1.6x and 2x positions) was added to the newer models, a PH position was provided on the changer as well, containing no lens at all (an empty slot) - because the Bertrand lens for phase contrast stayed where it had always been. You can see the construction of the magnification changer and this empty slot here: https://www.microscopeparts.eu/part/91043.
This lens fits the intermediate tubes used in the following microscopes:
- Zeiss Universal
- Zeiss Photomicroscope I
- Zeiss Photomicroscope II
- Zeiss Photomicroscope III / III RS
- Zeiss Ultraphot
This is a service part for those who need to replace this element in their microscope, or who want to use the Amici-Bertrand lens for their own DIY projects.
Over the years, Carl Zeiss Photomicroscope series microscopes have acquired various names commonly used by their owners. These include, among others:
- Zeiss Photomikroskop
- PM, e.g. Zeiss PM II or Zeiss PM III
- Zeiss Phomi, e.g. Zeiss Phomi II
It should also be mentioned that Zeiss Photomicroscope microscopes were sold under the Opton brand as well.
Names, descriptions, terms, and search contexts under which this part is searched.
- Zeiss Photomicroscope microscope repair parts
- Zeiss Photomicroscope intermediate tube service and repair
- Zeiss Phomi Foto-Zwischentubus reparieren
- Zeiss Universal Mikroskop Bertrandlinse
- Zeiss Ultraphot microscope fungus on the Bertrand-lens
- Zeiss PM III - auf der Bertrand-Linse befindet sich Pilzbefall
- Zeiss Photomicroscope III RS DIC- und Phasenkontrast-Einstellung-Linse
- Bertrandova čočka mikroskop Zeiss Photomicroscope
- lente de Bertrand microscopio Zeiss Universal
- lente de Bertrand para contraste de fases microscopio Zeiss Photomicroscope
- lente di Bertrand microscopio Zeiss Universal
- lente di Bertrand per contrasto di fase microscopio Zeiss Photomicroscope
- Zeiss buy spare parts
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The number of pieces of this microscope part that we have to offer.
1
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Price in EURO for 1 piece of this microscope part. Price is negotiable.
25 €
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Name of the category to which this microscope part is classified.
Lenses
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Abbreviated and full name of the manufacturer of this microscope part.
Zeiss
Carl Zeiss West Germany
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Where has this microscope part been operating so far? From what microscope or larger microscope assembly was it removed?
Model name of the equipment in which this microscopic part previously operated.
Photomicroscope
Abbreviated name of the manufacturer of the equipment in which this microscopic part previously operated.
(Zeiss)
Here it is written whether this part was removed from a microscope or from a larger microscope part.
microscope
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List of microscope models this part is compatible with.
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A list of potential uses for this part and when it might be needed.
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if you have a microscope in which this element is missing (e.g. somebody unscrewed the lens for cleaning and never put it back)
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if you have a microscope in which this lens does work, but is in very poor condition, e.g. fungus damaged or scratched
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...
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if you want to use this Amici-Bertrand lens for your own DIY project or another microscope
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