PLM 100 Series Polarized Light Microscope System

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Introduction

A Polarizing Light Microscope is used to study anisotropic materials—those that are transparent or opaque—with birefringence. Materials exhibiting birefringence can be clearly distinguished under a polarizing microscope. While such substances may also be observed using staining methods, some require the use of a polarizing microscope. A reflected polarizing microscope is an essential tool for investigating and identifying birefringent materials by exploiting the polarization properties of light.

Key Features of the PLM100 Series Polarizing Microscope System:

  • Optional standard or long working distance objectives;
  • Imaging optical path: 1X (tube lens focal length of 180mm), with customizable reduction lenses for various magnifications;
  • Image plane size: 25mm;
  • Spectral range of the optical path: visible light;
  • Camera interface options: C/M42/M52, etc. (optional);
  • Illumination options: critical illumination / Köhler illumination (optional);
  • Light source options: 10W white/blue LED illumination (optional);

System Parameters

Standard Working Distance Objective Parameters (45mm parfocal)

Order code

Magnification

NA

WD/mm

Focal length(mm)

Resolution(um)

OFOV(mm)

IFOV(mm)

Thread

POL2.5XA

2.5X

0.075

6.2

80

4.46

10

25

M26*0.705

POL5XA

5X

0.15

23.5

39

2.2

5

25

M26*0.705

POL10XA

10X

0.30

22.8

20

1.1

2.5

25

M26*0.705

POL20XA

20X

0.40

19.2

10

0.8

1.1

25

M26*0.705

POL50XA

50X

0.55

11

4

0.6

0.44

25

M26*0.705

Long Working Distance Objective Parameters (60mm parfocal)

Order code

Magnification

NA

WD/mm

Focal length(mm)

Resolution(um)

OFOV(mm)

IFOV(mm)

Thread

POL2XA

2X

0.055

33.7

100

6.1

12.5

25

M26*0.705

POLL5XA

5X

0.14

33.6

40

2.2

5

25

M26*0.705

POLL10XA

10X

0.28

33.4

20

1.2

2.5

25

M26*0.705

POL20XA

20X

0.34

29.5

10

0.8

1.25

25

M26*0.705

POLL50XA

50X

0.5

18.9

4

0.7

0.5

25

M26*0.705

External Dimensions

PLM100 Series Polarizing Microscope System Dimension Diagram
PLM100 Series Polarizing Microscope System Dimension Diagram

Application Areas

Geology, Petrology, Mineral, Crystal Structure Characterization, Asbestos Analysis, and Coal Analysis

Ore is a natural rock that contains valuable minerals. It is usually extracted through mining and further processed to obtain the desired minerals. Metallic ores are typically oxides, sulfides, or silicates. A polarizing microscope can be used to analyze the crystal structure and composition of ores.

PLM100 Series
PLM100 Series Polarizing Microscope System Capturing Ore

Glass (Stress Birefringence or Inclusions), Plastic and Polymer (Stress Birefringence), Textile and Fiber Inspection

The image below shows a plastic housing captured using both a brightfield metallographic microscope and the PLM100 series polarizing microscope system. Due to mechanical forces at the edges of the plastic, the elastic effect of light causes stress birefringence—a phenomenon that a conventional brightfield metallographic microscope cannot detect, but which can be sensed and analyzed using a polarizing microscope.

Actual image of plastic housing surface (left) captured by a brightfield metallographic microscope; (right) captured by the PLM100 series polarizing microscope system.