Oral cavity scanner

Abstract

The invention provides an oral cavity scanner. The oral cavity scanner comprises an image capture device, a first polarization element, a second polarization element, a reflector, a quarter-wave plate and a projection and image acquisition lens set. The projection and image acquisition lens set comprises a first lens and a second lens. When entering a first face, a projection light beam penetrates through the first face and a second face in sequence, enters a third face through the first lens and the second lens in sequence after coming out of the second face, then enters the reflector after penetrating through the third face and a fourth face in sequence and penetrates through the fourth face, the third face and the quarter-wave plate in sequence after being reflected by the reflector to form a first light beam; the first light beam enters an object to be measured and penetrates through the quarter-wave plate after being reflected by the object to be measured to form an image acquisition light beam; the image acquisition light beam enters the third face, enters the projection and image acquisition lens set after being reflected by the third face, enters the second face after passing through the second lens and the first lens in sequence and enters the image capture device after being reflected by the second face so that the image capture device can acquire an image of the object to be measured.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to an oral cavity scanner. Background technique [0002] In the process of clinical oral diagnosis and restoration, oral impression is an important source of information storage, and almost every patient needs to take one or more impressions. By comparing multiple models before, during, and after treatment, doctors can understand the effect of treatment and improve the accuracy of inspection, diagnosis, and treatment. Dental technicians also need to determine the shape of denture restorations based on impressions. [0003] At present, the digital impression technology with easy operation, high precision and convenient storage has attracted more and more attention from the stomatology field, and more and more scholars and companies have invested a lot of energy and financial resources in researching it. The methods of obtaining digital impressions are divided into two categories acc...

AI Technical Summary

Problems solved by technology

[0004] Due to the particularity of real-time scanning in the mouth, the oral scanner needs to be able to be placed in the oral cavity, and the length of entering the oral cavity is too long, which will cause severe shaking. The length of entering the oral cavity is too short, and the doctor's hand is easy to touch the patient's mouth. Therefore, the length of the oral scanner into the oral cavity cannot be too long or too short

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