Endoscopic binocular optical system with dual objective lens and single image sensor

Abstract

The invention is applicable to the technical field of endoscopes, and provides an endoscope binocular optical system with double objective lens and a single image sensor. The endoscope binocular optical system comprises a first optical lens set and a second optical lens set which are arranged in parallel, as well as the image sensor, wherein each of the first optical lens set and the second optical lens set comprises a first lens, a second lens, a diaphragm and a third lens which are arranged in sequence in the light incidence direction; a prism is arranged in the emergent direction of each third lens; the incidence surface and emergent surface of each prism are parallel; the image sensor is arranged in the emergent directions of the two prisms; the emergent surfaces of the two prisms are coplanar, and correspond to different areas of target surfaces of the image sensor. The invention provides an image sensor target surface partition technology, only the single image sensor is needed to be adopted, so that the working diameter of an endoscope can be effectively reduced, wider space is provided for the selection of the image sensor, the diameters of the two objective lenses are not needed to be greatly reduced, and further, the cost is greatly reduced; the system is a superfine endoscope optical system with relatively high cost performance, and can be applied to the fields of industrial inspection, medical treatment and the like.

Description

technical field [0001] The invention belongs to the technical field of endoscopes, in particular to an endoscope binocular optical system with double objective lenses and single image sensors. Background technique [0002] At present, endoscopic technology has been widely used in medical treatment, aviation, shipbuilding, automobile assembly and other fields. As a new type of non-destructive testing equipment, industrial endoscopes expand the visual distance of the human eye and break through the visual limitations. Burrs and foreign objects, etc., avoid unnecessary equipment disassembly, disassembly and possible damage to parts during the inspection process, greatly saving maintenance costs, and are convenient and practical. They are indispensable and important inspection tools in the current industrial field. Three-dimensional dimension measurement technology is a key link in the development of modern manufacturing industry. With the continuous improvement of industrial m...

AI Technical Summary

Problems solved by technology

[0007] Due to the dual objective lens and dual image sensor imaging technology solution, there are two image sensors. Considering the small size requirements, the requirements for the image sensor volume are relatively strict, and ultra-small image sensors are required. The cost of such image sensors is very high

The dual-objective lens and single-image sensor time-sharing imaging technology has high precision requirements for the micro-shutter technology. If it is not handled properly, the reliability of the product will be greatly reduced.

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