Feature 1　Measurement  and 3D map

Non-contact automatic measurement without touching the lens

Although the center thickness of the lens is clearly indicated on the design drawing, it is difficult to measure accurately, and the "contact type" device is the mainstream. The accuracy of the "contact type" depends on the mechanical structure, and "measurement scratch" is also an issue.

Accurate and automatic “non-contact" measurement would be an ideal. This device was developed in response to such requests.

 Principle and method of measurement

Automatic vertex detection and fast scan measurement

Automatically detects vertices by automatically scanning an arbitrary measurement range.This feature eliminates the need for centering of the lens. In addition, the input of "refractive index" and “the radius of curvature” of the material is not required.

In addition, the input of "refractive index" and “the radius of curvature” of the material is not required.

Lens vertex detection method

Measurement range of the adopted displacement transducer in the Z direction = WD ±1.3 mm.

The scanning XY stage calculates all center thicknesses within the measurement range and automatically detects the center thickness at its maximum (minimum) value.

line scan method

The measurement data captured by the linear motion of the stage is once imported to the PC side for high-speed calculation processing and 3D analysis.

A 3D map display to capture visually

If the output is only numerical values, it is dIf the output is only numerical values, it is difficult to know if the surface vertex is really captured. Therefore, this system outputs a 3D map for each measurement to visually enhance the reliability of the measurement.

Display of 3D maps

It is possible to display the front and back sides simultaneously. It is also possible to use the scroll function to rotate the 3D map and display the coordinates of the vertices.