Digital detection instrument and detection method for detecting optical distortion of light transmitting glass

Abstract

The invention discloses a digital detection instrument for detecting optical distortion of light transmitting glass, which consists of hardware and software. The hardware is a digital photographic device which comprises a calibration board, a standard testing map, a standard grid map, a testing bracket, a digital single lens reflex camera, a tripod, a special computer and a glass test piece to be tested. The standard testing map and the standard grid map are respectively pasted on the front side and the back side of the calibration board; the glass test piece to be tested is mounted on the testing bracket; the digital single lens reflex camera is arranged directly behind the glass test piece to be tested; the posture of the digital single lens reflex camera is adjusted by two direction gradienters on the tripod so as to ensure that the optical axis of the camera goes through the geometric center of the glass test piece to be tested and is vertical to the calibration board; the digital single lens reflex camera is connected with the special computer through a data wire of the camera; and the software is a special software 'Optical Distortion' provided by the device itself. The method for detecting the optical distortion of the light transmitting glass comprises six steps. The digital detection instrument has the advantages of wide measurement range of the whole visual area, high automation degree and high detection precision.

Description

technical field [0001] The invention relates to a digital detector and detection method for optical distortion of transparent glass, which is a method and device for digitally detecting optical distortion of transparent glass with high efficiency, and belongs to the technical field of automatic detection. Background technique [0002] Optical distortion refers to the rate of change of optical angle deviation caused by the inhomogeneity of transparent parts (usually glass). The reason for optical distortion is that the surface refractive index distribution of the glass is non-uniform due to factors such as technology, material, coating, curvature, etc., which makes the passing light deviate, thereby distorting the object image observed through the glass. For vehicles such as automobiles and airplanes, the cockpit windshield serves as an intermediary for the driver to observe the environment outside the cabin, and its optical quality directly affects the driver's judgment on t...

AI Technical Summary

Problems solved by technology

The traditional grid plate measurement method uses a film camera to take an image of the orthogonal grid plate seen through the glass specimen, and after the film is developed and enlarged, the degree of deformation of the grid lines is manually interpreted to determine the optical distortion. There is a time-consuming test data. The disadvantages of labor, precision and efficiency are low, and it often takes more than a day to detect a piece of transparent glass

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