Chalkboard writing magnifier

Abstract

A chalkboard writing magnifier is characterized in that a miniature camera (1) can be fastened to the chest of a teacher when the teacher gives a lesson, writings of the teacher are converted into wireless signals and transmitted to a signal receive (2) by the miniature camera during a class, the received signals are converted into electrical signals or video signals or directly magnified and projected by a projector (3), and the writings are magnified. The chalkboard writing magnifier has the advantages that incidence of myopia in students, occurring in daily teaching, can be reduced, abilities of teachers and students to write are cultivated, the problem that back-seated students cannot see or feel hard to clearly see the writings are solved, bad practice is avoided, and the quintessence of Chinese culture, calligraphy, is inherited.

Description

technical field [0001] The patent of the present invention relates to the field of myopia protection and teaching, specifically a novel device capable of enlarging blackboard writing. Background technique [0002] The number of myopia in my country has exceeded 400 million, the incidence of myopia among adolescent students and children ranks second in the world, and the myopia rate among college students is over 90%. Myopia not only affects the employment of students after graduation, but also a manifestation of the poor health of the whole people. [0003] There are a lot of students in the classrooms of our country, and the students sitting in the back row are struggling to see the chalk on the blackboard, which leads to myopia over time. [0004] In addition, students fought for the front row seats and read the writing on the blackboard, which caused unnecessary conflicts and even bribed teachers, which corrupted the learning atmosphere and led to disharmony between stud...

AI Technical Summary

Problems solved by technology

[0006] The patent of the present invention provides an amplifying device for blackboard writing, which can reduce the incidence of myopia among students in daily teaching, cultivate the writing ability of teachers and students, solve the problem that students cannot read blackboard writing clearly, eliminate unhealthy tendencies, and benefit students. sustainable development

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