Projector capable of enlarging projection range and using method

Abstract

The invention discloses a projector capable of enlarging a projection range and a using method, and relates to the technical field of projectors. An output shaft of a first motor drives a rotating block to rotate, so that a projection lens comes out of a fixed shell, the projection lens is fixed by a sliding rod under the effect of elastic force of a first spring in a sliding groove, the projection lens can be rotated out of the fixed shell, and an output shaft of a second motor drives a rotating brush to rotate; the rotating brush wets the rotating brush under the effect of the cleaning waterbin and the fixing pipe, the rotating brush cleans the convex-concave lens, the rotating brush cleans sundries in the rotating brush into the collecting bin under the action of the rotating brush, anoutput shaft of a third motor drives a gear to rotate, and the gear drives an annular rack and a first rotating ring to rotate. Therefore, the second rotating ring can be moved out from the outside of the first rotating ring, so that the convex-concave lens can enlarge the image in the projection lens.

Description

technical field [0001] The invention relates to the technical field of projectors, in particular to a projector capable of increasing the projection range and a use method thereof. Background technique [0002] A projector (also known as a projector) is a device that can project images or videos onto a screen. It can be connected to a computer, VCD, DVD, game console, DV, etc. through different interfaces to play corresponding video signals. It is widely used. For home, office, school and entertainment. The basic principle of the projector is to use optical elements to enlarge the shape and outline of the workpiece, and then project it on the screen. It can be used for profile measurement with transmitted light, and can also be used to measure the surface shape of a blind hole with reflected light. In addition to being used for viewing movies, projectors are also often used for measuring complex contours and small workpieces. The performance indicators of projectors are si...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a projector that can increase the projection range and a method of use, which solves the problem that the angle of the projection lens cannot be rotated and the dust cannot be cleaned when the projector is in use, and the projection of the projector cannot be adjusted. range issue

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