Straight Polarizing Microscope (PM-9)
PM-9 is a student-grade polarizing microscope developed for academic and training laboratories. It is built with a limb-type inclined body and a binocular viewing system to support comfortable observation during routine practical work. The microscope is equipped with a complete polarizing optical setup including a graduated polarizer, sliding analyzer, compensators, and a smooth 360° rotatable stage. Its mechanical stability, accurate angular control, and reliable optics make it suitable for mineral, crystal, and basic material analysis in educational environments.
Straight Polarizing Microscope (PM-9)
Technical Specification Table – PM-9 Polarizing Microscope
| Specification | Details |
|---|---|
| Model | PM-9 |
| Microscope Type | Student Polarizing Microscope |
| Body Design | Limb-type inclined body |
| Observation Head | Binocular observation system |
| Head Inclination | 90° inclined |
| Analyzer | Sliding analyzer |
| Compensators | 1/4 wave plate and full wave plate |
| Stage Type | Rotatable circular stage |
| Stage Rotation | 0–360° with vernier graduation |
| Stage Mounting | Ball-bearing mounted rotation system |
| Condenser | Adjustable condenser |
| Condenser Numerical Aperture | N.A. 1.25 |
| Polarizer | Fully graduated polarizer |
| Objectives | Polarizing objectives P5X, P10X, P40X, P45X |
| Eyepieces | 10X standard, 15X optional, cross eyepiece |
| Illumination | Plano-concave reflector |
| Optional Illumination | Sub-stage LED illumination |
| Packaging | Inner thermocol / styrofoam with outer cardboard box |
Key Features
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Designed specifically for student and academic laboratories
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Complete polarizing optical system for mineral and crystal studies
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Binocular viewing head for comfortable long-duration observation
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360° rotatable circular stage with vernier for angular measurements
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Ball-bearing mounted stage ensures smooth and accurate rotation
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Sliding analyzer for controlled polarized light observation
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Supplied with quarter-wave and full-wave compensators
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Fully graduated polarizer for precise optical alignment
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Adjustable N.A. 1.25 condenser for improved contrast
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Multiple polarizing objectives for varied magnifications
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Optional LED illumination for uniform brightness
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Stable mechanical construction suitable for routine lab use
Working Principle
The PM-9 operates on the principle of polarized light microscopy. Light from the reflector or optional LED source passes through the graduated polarizer to produce plane-polarized light. When this light interacts with anisotropic specimens such as minerals or crystals, it undergoes birefringence. The emerging light is analyzed through the sliding analyzer and compensators. By rotating the circular stage and observing changes in brightness and interference colors, optical properties of the specimen can be studied accurately.
Applications / Use Cases
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Teaching mineralogy and crystallography in colleges
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Student practical training in geology laboratories
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Crystal and birefringence studies in physics labs
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Material science analysis of polymers and fibers
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Optical experiments in chemistry laboratories
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Basic research and microscopy training programs
