Image capture device capable of eliminating reflected light and shadow of photographed object

Abstract

An image capture device capable of eliminating the reflected light and shadow of a photographed object, comprises a camera, an LED lamp, an upper lampshade, a lower lampshade and an objective table, wherein the upper lampshade and the lower lampshade are both hollow cone structures; the camera is placed on the upper end of the upper lampshade and can enter the upper lampshade; the lower lampshadeis located under the upper lampshade and is placed on the objective table; and when in use, the object to be photographed is placed in the lower lampshade in order to be photographed. The two cone-shaped lampshades are installed on the object to be photographed, and an LED light source installed outside the camera irradiates the object to be photographed to form a diffuse reflection of multiple point light sources inside the lampshades, thereby eliminating multiple shadows of the object to be photographed. Since a direct illumination light source is not used, reflected light cannot be formed on the surface of the object to be photographed. The light diffused through the lampshades is uniform, and a brightness ratio of the bright portion to the dark portion of the actually photographed object can be reduced, and a taken photograph has a good bright portion and dark portion details for easy subsequent analysis and data processing.

Description

technical field [0001] The invention belongs to the technical field of testing and testing, and in particular relates to an image acquisition device capable of eliminating reflections of objects to be photographed. Background technique [0002] In failure analysis or other applications, when taking high-magnification optical photos of objects, 3D digital video microscopes or stereo microscopes equipped with CCD are often used. At present, most of the light sources used in these two microscopes are LED ring light sources, and the old microscopes are still in use. Tungsten-halogen lamps are used as light sources, and the light irradiation is from top to bottom. When the object to be photographed has smooth reflective planes (such as processed bright metals, cleavage fractures, ceramic products, etc.): first, the bright and dark objects in the surrounding environment will form bright and dark light spots or reflections on these planes. Artifacts are produced in photos; secondl...

AI Technical Summary

Problems solved by technology

When the object to be photographed has a smooth reflective plane (such as processed bright metal, cleavage fracture, ceramic products, etc.): first, the bright and dark objects in the surrounding environment will form bright and dark light spots or reflections on these planes. Artifacts are produced in photos; secondly, these smooth surfaces will reflect the light of the light source and form high-brightness spots in digital photos. The visible range is about 10^5, but ordinary monitors and CCDs can only express 256 different brightnesses. Even with HDR technology, it is difficult to capture and display the details of bright spots and dark places

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