Automatic Computerized Polariscope Measuring Stress Retardation

Automatic Computerized Polariscope (Ref : NMV-145)

This full-auto Polariscoper is a stress measurement device that automatically detects the optical path difference and the slow axis direction of transparent object s which displays  birefringence phenomenon under polarized light.

When light travels through the polarizer, it  becomes circular polarized light. When a stressed sample is placed, there is an optical path difference between the slow axis and fast axis . A nd the outgoing light becomes elliptical polarized light. By rotating the analyzer  , the rotating angle  of the polarized light which  is affected by the presence of internal  stress can be detected precisely . By applying the rotating angle to a formula, stress value in the sample will be calculated . During one measurement, this full-auto Polarimeter  can take images at a specialized  angle, and simultaneously obtain the stress size and slow axis direction of all sample areas in the viewing field and output the three-dimensional stress distribution.

The camera connected with a computer, detecting data and images can be stored easily . The light source adopts high-brightness LED light, which has a long service  life and low electricity consumption . In this way , time and operating cost of replacing the light source will be decreased .

Features

1. One-key automatic stress measurement within  the whole viewing  field ;

2. The axial direction of the stress at each point can be displayed  together with the internal stress  value, which is convenient for stress type analysis;

3. The result is displayed in 3D mode, which visually displays the stress level of each point;

4. Use background light calibration to eliminate environmental errors;

5. The high-speed and standard measuring  modes can be switched freely to control detecting speed;

6. Using  area array LED  light source, the brightness difference between center and edge is ≤20%;

Specification

Overall size: 363*285*490mm

Weight: 16kg

Measurement area size: 175*175mm

Measuring space height: 0~150mm

Detection method: rotating analyzer method

Setting wavelength: 590nm

Optical path difference range: 0-145nm

Repeated measurement accuracy: 1nm

Effective pixels: 1100*1100

Light source: high brightness LED

Power supply: AC 100~240V 50/60Hz 0.35A

Accessories: measuring main body, PC, cable, power adapter

Support system: Windows7/Windows10

Use environment: indoor use

Environment temperature: 10℃~40℃

Environmental humidity: 25% ~ 85%