The invention relates to a light converter for the online detection of surface defects of automobile interior decorative parts, and the light converter is a multiple directional plane mirror group which consists of a plurality of plane reflectors, wherein the number of the plane reflectors is determined by the number of curved surfaces formed by the dividing of the surface of a detected object. The form of each surface of the detected object is corresponding to one independent plane reflector, and the posture of each plane reflector is changed to achieve the focusing of the reflected light ofdifferent surfaces on an imaging plane of a line scanning imaging system. The invention also relates to a design method for the light converter. The light converter can achieve the online detection imaging of the surface quality of a high-reflectivity and multi-curved-surface product.

Light converter for online detection of surface defects of automobile interior decorative parts, and design method

The utility model relates to a non-contact three-d profile scanning head which comprises a light source, an electronic inductor and a reflective mirror. The light source adopts a set of collimation and cylindrical lenses which can convert a point light source to a linear light source, and the electronic inductor and the reflective mirror are symmetrically arranged in mirror along an axial cord of an optical axis of the light source. The monochrome laser spot light source penetrates through the collimation and cylindrical lens and converts to a lineation light beam which is vertically projected on a body surface, and light is reflected. The light is accepted on the inductor through the reflective mirror and the electronic inductor, and a surface coordinate points with the three-d profile can be obtained after the computer operation. The light is accepted, because of multiple reflections, the desired substantial space of an optical path is greatly reduced, and the image quality is maintained.

Li Li

Papers

Small non-contact symmetric imput type three-D profile scanning head