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Suzhou PTC Optical Instrument Co., Ltd.

China Manufacturer with main products: Polariscope, Strain Viewer, Surface Stress Meter, AOI Machine, Optical Sorting Machine, Vision Inspection System

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Glass Polariscope Displaying Residual Stress In Real Time

FOB Price: 1100.00 - 1300.00 USD/Set
In Stock

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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Place of Origin: Jiangsu in China

Quick Details

  • Usage: Glass Testing Instrument
  • Power: Electronic
  • Brand Name: PTC
  • Warranty: 1 year
  • weight: 8KG
  • Model Number: PSV-202
  • Function: Observing residual stress inside glass products
  • Detecting method: Sensitive Color
  • Viewing field: 200*200mm
  • Analyzer: diameter 100mm


Polariscope for transparent Quartz, glass and plastic


Detecting object

1. transparent glass products with complex construction.

Such as: penicillin bottle, ampoule, mobile phone cover, lighting tube, solar glass,automobile glass,sapphire, glass container, glass handicraft  

2. transparent plastic samples

Plastic bottle, cosmetic bottle, beverage bottle, plastic tray, plastic film

3. Crystaline material 


Retardation of full-wave plate: 560nm 

Viewing field: 200mm*200mm

Measuring height:236mm

Overall size: 310*285*350mm

Voltage: 24VDC( with a AC/DC adaptor ) 

Light source: 


Measuring Principle

the internal stress of glass and plastic products has a birefringent characteristic. In other words, if there is stress inside of these types of products, light from he polarized lamp will be divided into different units, which produce optical interference phenomenon(ripple patterns) in turn.

under white-light lamp, you can see aubergine ripples, which is caused by the presence of stress.

from the observation of colored patterns, you can see stress distribution directly, then evaluate and improve the annealing process.

the inspection of plastic molds is more complex as the colored patterns cased by stress is irregular. A similar situation may occur with glass products, which is called stress stretching. for example, a qualified mold will have a large amount of stress released by tension.

Glass Polariscope displaying residual stress in real time

Service Process

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  • Product Quality Commitment

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  • Deposit Service Commitments

    In order to improve the quality of service, ECVV will charge for a 100CNY deposit for the agent purchasing order, and the deposit will be part of subsequent purchasing costs.

    After paying a deposit, if the purchasing order is not completed because of unsatisfied ECVV services, ECVV will refund your deposit.

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