Tempered Glass Flatness and Image Deformation Tester

• Customization: Available
• After-sales Service: Online
• Warranty: 1 YEAR
• Model NO.: GA-1K
• Mass Scope of Workpiece: 1000kg
• Type: Tempered Glass Flatness and Image Deformation Test
• Accuracy Grade: 1
• Display: Digital
• Control: Computer Control
• Weight: 0-100Kg
• Power Source: AC220V
• Transport Package: Wooden Package
• Specification: 3500× 2400× 800mm
• Trademark: GONOAVA
• Origin: China
• HS Code: 9024800000
• Production Capacity: 200

Product Description

Product Description

Tempered Glass Flatness and Image Deformation Tester
1.Product Introduction
The GA-1K tempered glass flatness and image deformation tester uses an optical non-contact probe to scan the surface morphology of the glass, measure the bow and waveform bending curves of the glass, and calculate the peak to valley values (PV values), optical power (OP values), and edge curvature of each wave. Through multi line scanning, it generates a 3D morphology map of the glass surface, as well as the lateral deformation curve and parameters of the glass. Using PV value to evaluate glass flatness and OP value to evaluate glass image deformation, two statistical methods, Pareto chart and histogram, are used to comprehensively evaluate glass flatness and image deformation.

The glass is placed vertically on the sample stage in front of the equipment, with its back against the crossbar. The glass is kept stationary and free from external force. The measurement system controls the sensor to move uniformly in the horizontal direction (X-axis) to measure the displacement from the glass. The horizontal slide stage is raised step by step to scan the glass surface at different heights (Y-axis), completing the scanning of the entire glass surface morphology. Obtain the following curve:
In order to analyze and calculate the size and causes of surface deformation, the curve obtained from the X-axis scanning is decomposed into two curves: the arch-shaped curve and the wave-shaped curve. The arch-shaped curve represents the overall large deformation (Overall Bow), while the wave-shaped curve represents the local small deformation, which is also known as the roll wave (Roll Wave).
Display the detailed information of each curve.
And the corresponding optical-focal degree (OP) curve and peak-valley (PV) value curve
The 3D topography of the glass surface is synthesized through software.
And the 3D drawing of the roller wave, that is, the effect drawing after flattening the bow-shaped curve.

The 3D image can be flipped up, down, left and right, making it convenient to observe the deformation of the glass. On the right side, different colors represent the refractive values, allowing users to intuitively understand the degree of deformation of the glass.

There is also a severe bow-shaped bend perpendicular to the direction of glass transmission. This deformation, which is often overlooked by people, is an important factor causing image distortion of building curtain walls. The instrument has plotted the deformation curve in this direction at equal intervals, as shown in the following figure.
The graph indicates the deformation (mm) and curvature (‰) of each line.
The optical focal length (OP) and peak-valley (PV) values of each point of the measured glass were obtained through calculation.
Based on the test data, the statistical results are made as shown in the following figure.

In the statistical results shown in the following figure, the maximum value, minimum value, average value, middle value, 90% threshold, 95% threshold and edge warpage of the front and rear parts of the glass are displayed for the optical focal length (OP) value and peak and valley (PV) value of the front, middle and rear parts of the glass. And the statistical Pareto plots and histograms of the overall optical focus of the glass (including the bow-shaped bend), the optical focus of the roller wave and the PV value.

Through Pareto diagram analysis, the cumulative proportion of this piece of glass that does not exceed a certain threshold (for example, 50mdpt) and that exceeds a certain threshold (for example, 150mdpt) can be obtained. The three indicators of PV value, overall optical focus and roller wave optical focus were investigated to achieve the integrated evaluation of the flatness of this piece of glass and the image deformation.
According to the size of the glass sample, the instrument offers two ways to set the number of scanning lines: automatic and custom. After the test is completed, a glass scanning position map can be generated, which visually reflects the parts of the glass where various deformations occur, as shown in the following figure.

Finally, a report of the test results is formed for printing or storage.

 

Product Parameters

Tempered Glass Flatness and Image Deformation Tester
2.Product Paramter 

Scanning range	2000 (horizontal) × 1800 (vertical) mm
Overall dimensions	3500 (length) × 2400 (height) × 800 (thickness) mm
Measurement accuracy	1 μm
Test repeatability	95% confidence interval
Optical power	+/3mdpt
PV value	+/2μm
Scanning speed	200mm/s
Power supply	~220V  50Hz
Power	2500W

Principle and Block Diagram

Detailed Photos