Optical imaging system with reflecting conical lens

Abstract

The invention discloses an optical imaging system with a reflecting conical lens for imaging the full wall of a drilled hole. The optical imaging system comprises the reflecting conical lens, a camera and an outer layer protection cover, wherein the reflecting conical lens is fixedly installed on the outer layer protection cover; the camera is positioned above the reflecting conical lens, and the center of the camera and the center of the reflecting conical lens are positioned on a same straight line; the reflecting lens surface of the reflecting conical lens forms an angle of 40 degrees with the central axis of the reflecting conical lens. The optical imaging system enables images photographed by the camera and images of a well wall at the same plane of the reflecting conical lens to be consistent, and influences of light refraction in the optical imaging system with the conical lens can be corrected, thereby preventing the problem that the actual situation of the hole wall cannot be reflected truthfully because of image distortion.

Description

technical field [0001] The invention relates to the field of imaging technology, in particular to a reflective axicon optical imaging system. Background technique [0002] The borehole axicon optical imaging system is widely used in hydrology and water conservancy engineering. For example, the JKX-3 drilling full-hole wall imaging system uses an downhole camera to capture images around the hole wall through a conical mirror, uses a computer to control the image acquisition and image processing system, automatically collects images, and performs unfolding and splicing processing to form a borehole Real-time display of continuous images of the columnar profile of the full-hole wall, and continuous acquisition and recording of the full-hole wall images. [0003] The existing axicon optical imaging system is generally composed of three parts, namely a camera, a light source and a reflective axicon. The center of the camera is in the same line as the center of the reflective co...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a reflective axicon optical imaging system, and the purpose is to solve the problem that the image formed by the existing reflective axicon optical imaging system cannot faithfully reflect the actual situation of the hole wall

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