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Upright Microscopes for Polarization Leica DM4 P, DM2700 P & DM750 P

State: Out of stock
If you would like to investigate crystalline structures, polarization microscopy will serve you best. Whether it be minerals, plastics and polymers, drugs and pharmaceuticals, or pigments and cement, with our polarization microscopes you will see what interests you most as a researcher or in quality assurance.
Warranty: 12 months


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Crystal Clear

 

Upright Microscopes
for Polarization
Leica DM4 P, DM2700 P & DM750 P

 

If you would like to investigate crystalline structures, polarization microscopy will serve you best. Whether it be minerals, plastics and polymers, drugs and pharmaceuticals, or pigments and cement, with our polarization microscopes you will see what interests you most as a researcher or in quality assurance.

 

Depending on your application, you can choose from three different systems for polarization microscopy:

 

● The fully coded and semi-automated Leica DM4 P

 

● The manual Leica DM2700 P

 

● The Leica DM750 P educational microscope

 

Learn more about polarization microscopy on Science Lab.

 

  Liên hệ với chúng tôi

info@redstarvietnam.com       091-5567-885

 

 

 

 

 

 

 

 

Get Optimal Results

 

You need a few components to get what you aim for in polarization. These are the most important:

 

● Strain-free optics, because you need to be sure that the observed birefringence

    results from the sample and not from the optics

 

● LED illumination is crucial, because it lights the samples homogenously and at a

   constant color temperature

 

● Polarizers will make birefringence visible and a rotatable stage enables you to

   align the sample and optical axis

 

● You need a Bertrand lens for conoscopic observation of the optical axis

   and compensators for measurement tasks

 

Get to know step by step in this polarization tutorial.

 

 

 

 

There will be Light!

 

LED illumination saves you money in many ways: It consumes less energy than halogen illumination, and does not need to be replaced, causing downtime of your instrument, because it has a lifetime of up to 25,000 hours. Further advantages:

 

● LED lights your samples homogeneously and at a constant color temperature,

    providing you with a realistic impression of your sample

 

● LED adjusts light intensity fast so you can work smoothly

 

● LED requires no daylight filter since the LED already provides constant light

    temperature of 4500 K

 

● LED produces little heat, and therefore does not need a cooling fan

 

● LED lets you work undisturbed, because no cooling fan makes a noise around you

 

 

 

 

 

 

 

 

 

 

 

 

Completely at Your Service: Leica DM4 P

 

If you want to do everything in polarization microscopy, you can with the Leica DM4 P.

 

Store and recall information with coded components

 

● When you change objectives, illumination intensity and aperture settings are recalled with the Illumination Intensity Control and Contrast Manager.

 

● Acquired images are always calibrated due to the coded nosepiece.

 

 

Identify interesting structures

 

● With the large 25-mm field of view you get a perfect overview.

 

● A lower magnification rather than the detailed view often reveals the specific information

   you need - just think of flow or deformation structures or zonation by cooling processes.

 

 

 

 

Get your Nosepiece Around it!

 

Get different sample information from different magnifications of the 6-objective nosepiece.

 

● Use a 2.5x overview objective to identify macro structures in your sample.

 

● Change to 63x magnification for detailed investigations of optical properties by

   means of conoscopy

 

● Switch to 100x to inspect phase reactions along grain boundaries

 

By the way: The nosepiece is also coded, so that it supports you intelligently.

 

 

 

 
 

 

 

 

 

Best of Both Illuminations

 

You can configure the Leica DM4 P with LED illumination either for transmitted light or incident light or with LED for both transmitted light an incident light in one go.

 

● Incident light is mandatory for all who perform reflectivity measurements,

   for example looking at ores or coal.

 

● Transmitted light is required for birefringence measurements, for example in inspection

   of geological thin sections, polymer foils, or drugs.

 

● For specific applications such as in geological research, both are necessary.

 

When the microscope is equipped for both incident and transmitted light, the associated objective, that is with or without cover glass correction, should be used from magnification >10x.

 

 

Investigate Optical Properties

 

Conoscopy is used to investigate interference figures. Their shape and the modifcation achieved by compensators yields information about the optical properties of the investigated material. You can determine the number of optical axis, the angle(s) of optical axis and the optical character of the material.

 

The Leica DM4 P is ideally suited to conoscopy:

 

● Strain-free objectives with high magnification and high numerical aperture are a must for this application.

 

● Use special 63x Leica objectives that fulfill the highest requirements of polarization class 5 to obtain optimal results.

 

 

Conoscopic image of Brookit, TiO2, with strong dispersion colors
Uni-axial interference figure of thick calcite plate, perpendicular to optical axis
Bi-axial interference figure of thin biotite crystal in diagonal position at circular polarized light. Position of optical axis can be clearly identified

 

 

 

Great Flexibility: Leica DM2700 P

 

If you do not need full automation and maximum reproducibility, the Leica DM2700 P is your instrument of choice. Apart from the automation, it offers a flexibility which is similar to the Leica DM4 P.

 

● Get distinct sample information with 5 objectives on the 5-fold

    centerable objective revolver

 

● Get large overviews from the 22-mm field of view

 

● Obtain a better contrast with UC-3D illumination at incident

    light observation

 

 

 

 

 

 

 

 

 

 

 

The Champion in Education: Leica DM750 P

 

In education you need a robust tool that students can use every day. You can easily plug and play it – that’s what we call best preconditions for successful learning.

 

● Get into the details of your samples with 4 objectives

 

● Use the 20-mm field of view for a good overview

 

● Enjoy the practical details the instrument offers: You can carry it by

   its handle and stow away its cable inside the instrument

 
 

Leica DM4 P

Leica DM2700 P

Leica DM750 P

Size and weight

Dependent on configuration at aproximately 25 kg.
Length: 460 mm (w/o lamphousing), width: 333 mm, height: 480 mm (depending on tube and configuration)

Dependent on configuration at aproximately 18 kg.
Length: 410 mm (with lamphousing), width: 331 mm, height: 505 mm (depending on tube and configuration)

With A/B module = 456 mm height, 220 mm width, 396 mm depth, weight 12 kg

Nosepiece

6x (M25), centerable, encoded

5x (M25), centerable

4x (M25), centerable

Eypieces, usable field of view (FOV)

25 / 22 / 20 mm FOV

22 / 20 mm FOV

20 mm FOV

Illumination incident and transmitted

High-power LED

High-power LED

High-power LED

 

Optional:
Halogen 12V / 100W
External light source for fluorescence excitation Leica EL6000
Hg lamphouses (mercury)

Optional:
Halogen 12V / 100W
External light source for fluorescence excitation Leica EL6000
Hg lamphouses (mercury)

 

Incident light axis

Motorized, 4-fold turret, illumination and contrast manager

Manual, 4-fold turret, color-coded diaphragm assistant (CDA)

Manual, fixed brightfield beamsplitter

Incident light

Polarization contrast
Brightfield
DIC
Fluorescence

Polarization contrast
Brightfield
DIC
Fluorescence
UC-3D illumination

Polarization contrast
Brightfield
Oblique illumination

Transmitted light axis

Motorized condensor operation, illumination and contrast managment

Manual condenser operation with color-coded diaphragm assistant (CDA)

Manual condenser operation with color-coded diaphragm assistant (CDA)

Transmitted light

Polarization contrast
Orthoscopy
Conoscopy
Brightfield
Phase contrast
DIC
Darkfield

Polarization contrast
Orthoscopy
Conoscopy
Brightfield
Phase contrast
DIC
Darkfield

Polarization contrast
Orthoscopy
Conoscopy
Brightfield
Phase contrast
Darkfield

Stage

360° rotatable polarization stage with verniers and brake
360° rotatable polarization stage with verniers, 45° clickstop position, and brake
Stage carrier for adaptation of 3rd party stages
Scanning stage 100x100
Scanning stage 75x50
Manual xy stages

360° rotatable polarization stage with verniers and brake
360° rotatable polarization stage with verniers, 45° clickstop position and brake
Stage carrier for adaptation of 3rd party stages
Scanning stage 75x50
Manual xy stages

Fixed 360° rotatable polarization stage with verniers and brake

Focus drive

25-mm stage stroke of coarse and fine drive
45-50-mm total stage stroke depending on stage and condenser type
Fine drive: 0.2 mm per turn of the knob (1 scale interval = 2 mm)
Coarse drive: 3.5 mm per turn of the knob
Motorization on request

25-mm stage stroke
xx-xx mm total stage stroke depending on stage and condenser type
2-gear focus drive (coarse / fine) with 1mm scale
3-gear focus drive (coarse / medium / fine) with 1 and 4 mm scale, torque adjustment, and adjustable upper focus stop
Motorization on request

17-mm stage stroke

Conoscopy

Fully integrated coded conoscopy module, additional 1.6x magnification changer, user guidance by display feedback
Advanced conoscopy module (manual)

Bertrand lens cube
Bertrand lens module (A/B module)
Advanced conoscopy module (manual)

Bertrand lens module (AB module)
A/B module with focusable Bertrand lens

Analyzer

Fixed analyzer
180° rotatable analyzer
360° rotatable analyzer

Polarizer

360° polarizer for incidend light
360° polarizer for transmitted light
Fixed polarizer with lambda plate
Fixed polarizer with 0°, 45° and 90° positions
90° polarizer with rotatable lambda plate
Polarizer in holder for transmitted light

Compensatores

l, l/4, quartz plate (0.-4. Order), tilting compensatores

Certificates:

 

CB 15 04 56257 102

 

EC DoC DM4 P_NRL

 

 

 

Press Releases:

 

150713_PR_DM4_P_EN

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