A surface depth measuring device

Abstract

The invention discloses a surface depth measuring device comprising a scanning device, an imaging device, a display device, a calibrating device, a storing device, a measuring device and a calculating device, wherein the scanning device is used for scanning the to-be-measured surface depth of an object; the imaging device is used for processing data measured by the scanning device to form an image; the display device is used for outputting the to-be-measured surface depth of the object; the calibrating device is used for calibrating an in-air optical path represented by a unit pixel point on the scanned image; the storing device is used for storing an in-air unit optical path represented by a unit pixel point on the scanned image; the measuring device is used for measuring the pixel value of the to-be-measured surface depth of the object in the scanned image; and the calculating device is used for calculating the to-be-measured surface depth of the object. The surface depth measuring device has the beneficial effects of no need of direct contact, no damage, high speed, convenience in operation and high measuring precision.

Description

technical field [0001] The invention relates to the field of depth measurement, in particular to a surface depth measurement device. Background technique [0002] In many fields such as materials and manufacturing, the flatness of the material surface is an important factor in its performance. In laser surgery, the operator hopes to obtain real-time information on the laser parameters of a certain parameter (power, pulse width, pulse number, etc.) The ablation depth of a specific biological tissue. At present, the measuring instruments in the depth direction of the sample surface include stylus instruments, stereo microscopes, traditional interferometers, etc. The stylus instruments need to be in contact with the object to be measured, which may easily cause damage to the measurement object and affect the measurement accuracy. Stereo microscopes require The microscopic measurement of the cross-section after dissecting the object to be measured belongs to contact or destruct...

AI Technical Summary

Problems solved by technology

At present, the measuring instruments in the depth direction of the sample surface include stylus instruments, stereo microscopes, traditional interferometers, etc. The stylus instruments need to be in contact with the object to be measured, which may easily cause damage to the measurement object and affect the measurement accuracy. Stereo microscopes require The microscopic measurement of the cross-section after dissecting the object to be measured belongs to contact or destructive measurement

The traditional interferometer calculates the depth value by observing the change of the interference fringe, which has high requirements on the environment and is very inconvenient when observing the movement of the fringe

In the process of laser surgery on the living body, the contact measurement is slow, the accuracy is not high, and the operation is inconvenient; the method of in vivo biological slices is used to cut the sample tissue longitudinally for measurement, and it is impossible to measure the living body, especially in the medical field. The correct objects are all patients, and the measurement method should be non-contact, non-destructive and fast

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