Projection device for changing imaging effect through light refraction

Abstract

The invention relates to the technical field of projection equipment. The invention further discloses a projection device for changing the imaging effect through light refraction. The device comprisesa shell, a telescopic rod is movably connected to the surface of the shell, a folding mirror is movably connected to the surface of the telescopic rod, a flexible screen is fixedly connected to the surface of the folding mirror, a toothed plate is movably connected to the interior of the shell, an extrusion plate is movably connected to the surface of the toothed plate, an elastic cover is movably connected to the surface of the extrusion plate, and a compression spring is movably connected to the interior of the elastic cover. If the range of the video projected at the moment is too small, the extrusion plate can be pushed to move towards two sides, and the extrusion plate meshes the toothed plate to push the shell to rotate away, and drives the folding mirror to rotate to the state shown in the figure 8. When the folding mirror is unfolded, the spring rod pushes the lamp source to move in the direction close to the folding mirror. In the moving process, it is known that the maximumprojection picture is enlarged from the maximum projection picture, and therefore the effect of changing the shape of the convex lens and the focal length to enlarge the projection picture is achieved.

Description

technical field [0001] The invention relates to the technical field of projection equipment, in particular to a projection equipment that uses light refraction to change the image rendering effect. Background technique [0002] A projector is an optical instrument that uses optical elements to enlarge the outline of a workpiece and projects it onto a video screen. It is popular for its portability and good visual effects; , light sources, circuits, etc., in which the optical system includes glass lenses such as convex lenses and flat mirrors, which are the key to projection molding. [0003] Due to the fixed lens size of traditional optical instruments, the projected video area is mostly fixed size. If the user wants to expand the video area in some larger spaces, a professional must disassemble the case and adjust the distance between the focal length and the lens. The distance is cumbersome and cumbersome, which limits the scope of use of the projector; in addition, the l...

AI Technical Summary

Problems solved by technology

[0003] Due to the fixed lens size of traditional optical instruments, the projected video area is mostly fixed size. If the user wants to expand the video area in some larger spaces, a professional must disassemble the case and adjust the distance between the focal length and the lens. The distance is cumbersome and cumbersome, which limits the scope of use of the projector; in addition, the light source of the projection device will emit a lot of heat energy during the projection process, and the heat energy will accumulate near the lens, causing the lens to refract light and bear heat while intensifying Its own temperature will cause the aging of the lens and reduce the effect of the projected picture. Therefore, a projection device that uses light refraction to change the image effect came into being.

Images