The Leica DM4 P upright polarizing microscope is a method of examining a substance by changing ordinary light into polarized light, in order to distinguish whether a substance is single refractive (isotropic) or birefringent (anisotropic). Birefringence is a fundamental characteristic of crystals. Therefore, polarizing microscopes are widely used in fields such as minerals and chemistry, as well as in biology and botany.

According to different applications, you can choose from three different systems:

1) Semi automatic Leica DM4 P with encoding

2) Manual Leica DM2700 P

3) Leica DM750 P Teaching Microscope

You need some components to achieve polarization research goals:

1、 Stress free optical components: Because you need to ensure that the observed birefringence comes from the sample rather than the optical component

LED lighting is crucial because it can uniformly illuminate the sample and has a constant color temperature

Polarizers help you see birefringence, and a rotating table helps you align the sample with the optical axis

You also need a Burgundy mirror for conical observation of the optical axis and a compensator for measurement tasks

Just the right amount of lighting!

2、 LED lighting: can save you money in multiple ways: it consumes less energy than halogen lighting, does not require replacement, does not cause machine downtime, and has a lifespan of up to 25000 hours. More advantages:

LED provides uniform illumination for the sample, with a constant color temperature, providing you with a realistic sample morphology

LED can quickly adjust the light intensity, making your work smooth and unobstructed

LED does not require a daylight filter as it already provides a constant light temperature of 4500 K

LED generates less heat, so there is no need for a cooling fan

LED can help you create a quiet and interference free working environment, as there is no cooling fan generating noise around

3、 High quality service is readily available

If you want topolarizing microscopeVarious operations can be performed using Leica DM4 P. When you want to replace the objective lens by storing and calling information through the encoding component, you can call the lighting intensity and aperture settings through the lighting intensity control and contrast manager.

Thanks to the existence of the encoding objective disc, the captured images are always calibrated.

4、 Identify structures of interest

The 25mm large field of view brings you an overview image of *.

The specific information you need is often presented at a low magnification, rather than detailed images - think of flow structures, deformation structures, or strip-shaped arrangements caused by cooling processes.

Let the objective lens turntable handle it!

Using an objective disc equipped with 6 objectives and different magnifications to obtain rich sample information.

Using a 2.5-fold overview objective lens can identify macroscopic structures in the sample

If you want to conduct a detailed study of optical properties using the cone light method, you can switch to a magnification of 63 times

Switching to 100 times can verify phase reactions along particle boundaries

And the objective lens turntable is also encoded, providing you with intelligent support.

5、 Make full use of two types of lighting materials

You can configure the Leica DM4 P as LED lighting using either transmitted or incident light, or you can configure it to use both light sources at once. Beijing Zhongxian Hengye specializes in microscopic optics.

When measuring reflectivity, incident light must be used, such as observing ores or coal.

When conducting birefringence measurements, it is necessary to use transmitted light, such as detecting geological thin sections, polymer films, or drugs.

In special applications such as geological research, both types of light need to be used.

When the microscope is configured to use both incident and transmitted light, the relevant objective lens (with or without cover glass correction function) should be used starting from a magnification of>10x.

6、 Study optical properties

Cone light method is used to study interferograms. The shapes of these graphs and modifications made by compensators can generate information about the optical properties of the investigated materials. You can determine the number of optical axes, optical axis angles, and optical properties of the material.

Leica seriespolarizing microscopeThere are the following advantages:

1. Leica DM4 P is ideal for cone light method:

A stress free objective lens with high magnification and high numerical aperture is the * condition for this application.

By using a special 63x Leica objective lens, it can meet the requirements of polarization level 5 and obtain results.

Your choice: Leica DM4P:

With the functionality of coding, it can flexibly adapt to various tasks, operate safely and simply, and is suitable for academic research, novice operators, or multi-user environments

6-digit encoding adjustable objective lens turntable

Lighting and contrast management to achieve reproducible results

Encoding cone light method, using a 1.6x magnification adjuster

LED lighting status display

360 degree rotary table, with or without 45 ° locking device, stress free optical components

Polarization equipment with a wide range of fixed or variable compensators, compliant with DIN 58879

2. Good flexibility

If you don't need full automation and reproducibility, the Leica DM2700 P is your instrument of choice. In addition to automation, it can also provide flexibility that is not inferior to the Leica DM4 P.

Obtain accurate and error free sample information using 5 objective lenses on a 5-digit adjustable objective turntable. Obtain a large overview image in a 22-mm field of view using UC-3D illumination observed with incident light,

Obtain better contrast effect

3. Teaching

In teaching, you need a durable tool that students can use on a daily basis. Easy to use, plug and play - this is a prerequisite for successful teaching.

Use 4 objective lenses to gain a detailed understanding of your sample

Adopting a 20-mm field of view, the sample overview is clear at a glance

Enjoy the practical details brought by the instrument: it can be moved with the handle, and the cable can be hidden in the instrument.