Homemade microscopic projector being convenient for students to make and practice

Abstract

The patent of the invention relates to the field of juvenile science and technology production and practice instruments, specifically to a homemade microscopic projector being convenient for studentsto make and practice so that a problem that development of the scientific and technological activities is affected because of lack of instruments in extracurricular scientific and technological practice activities of students can be solved. The homemade microscopic projector comprise a pedestal; a projector darkroom box body is arranged on the pedestal; a pulling type darkroom box is sleeved inside the projector darkroom box body; and a frosted glass screen is installed in the darkroom box; and the size of a microscopic image is adjusted by changing the distance between the frosted glass screen and a microscopic lens. Besides, a sleeve fixation clamp is installed at the back of the projector darkroom box body and is used for clamping a sleeve; a self-made microscopic lens is installed at one end inside the sleeve and is formed by carrying out burning softening and drawbench on a glass bar on an alcohol lamp and then carrying out burning to form a glass ball; a pull-type movable sleevesleeves the other end of the microscopic lens and a specimen carrier, a fixed glass piece, a collecting lens and a light source are installed successively inside the pull-type movable sleeve. The light source is a 12-V electric bead preferably. A battery source is connected externally by a power line. The focus of the microscopic lens can be adjusted by the pull-type movable sleeve, so that the image becomes clear.

Description

technical field [0001] The patent of the present invention relates to the field of scientific and technological production and practice instruments for teenagers, specifically an earthen microprojector that is convenient for students to make and practice. Background technique [0002] If we want to achieve the great strategic goal of "rejuvenating the country through science and education", we must do a good job in the science and technology education of young people. There are very few instruments, which are far from meeting the requirements of the times. It has become a top priority to invent some instruments needed for students' extracurricular scientific and technological practical activities. Let students make their own micro-projectors, not only understand the scientific principles of projectors, but also enable them Use your own works to observe animal and plant cell specimens and cultivate scientific literacy. Contents of the invention [0003] In order to solve t...

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Problems solved by technology

[0003] In order to solve the problem of lack of equipment for off-campus science and technology practice activities, which affects the next generation of science and technology practice, a kind of earthen microprojector technology work suitable for students' self-made and practice is provided; students do not need to spend money, use domestic waste to make and operate by themselves Experiment, understand the working principle of microscopes and projectors from the hands-on brain practice, and use the self-made micro-projector to observe and study the cell structure of animals and plants, and cultivate scientific interest in the hands-on brain

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