Single Canister Type Underwater Stereo Camera Capable of Distance Measurement

摘要

The present invention relates to an underwater stereo camera, and to two cameras and a lens system installed in parallel, by using one electric motor to control two cameras in the front and rear direction while simultaneously controlling the two lenses in the lateral direction underwater It is a device that can acquire 3D stereoscopic images of near objects as well as near objects.It is an underwater stereo camera system that can measure the actual distance of underwater objects by compensating the refractive index of light refracted through the observation window and underwater. Since the lens distance change according to the focal length change operates within the micro range, for the practical implementation of this, install a two-layer drive and use the harmonic drive and ball screw in the upper structure where the camera is mounted. The lower sphere on which the lens is mounted The mechanical amplification device consisting of a ball screw, sliding block, lever structure for motion conversion, a slide roller, a slide link, a linear guide bearing and a restoring spring is used to increase the accuracy of lens position control, and the actual distance of the underwater object and the camera. By using the property of having a one-to-one functional relationship between the focal length, the position of the encoder mounted on the motor is detected to measure the distance of the underwater object. In addition, the camera system is built in a single cylinder-type pressure hull equipped with a conical observation window in the front, and a single-acting underwater stereo camera with a structure that interfaces with external equipment using a waterproof connector is easy to install underwater and utilized in the deep sea. This is characterized by possible.