Photoelectric Earth Projector

Abstract

The invention provides a photoelectric globe projector, which comprises a base. An inclined shaft is fixedly arranged on the base; the inclined shaft is connected with a half-ring support capable of rotating around the inclined shaft; the half-ring support is fixedly provided with pole shafts orthogonal with the inclined shaft; the pole shafts are pivoted at the north and south poles of a model ball body of the earth; the model ball body can rotate freely around the pole shafts; the inclined shaft is internally provided with a projection lens for projecting to the model ball body along the axis; the model ball body is fully transparent and is internally provided with a ball housing; the ball housing is made of screen material and is relatively fixed with the pole shafts; the ball housing is provided with a light pass hole in the place right facing to the projection lens, so that light beams emitted from the projection lens can cover the upper half ball of the model ball body; the projection lens is coupled to a projection host in the base; the model ball body is matched with a space angle sensing system; and the projection host generates a projection image according to the space angle of the model ball body. The projector can realize geographic image projection on the model ball body and can enable geographic images to be directly zoomed on the surface of the model ball body.

Description

technical field [0001] The invention relates to the field of photoelectric geography demonstration equipment, in particular, it is a photoelectric earth projector. Background technique [0002] Some of the current electronic globes already have functions such as touch control and projection, but the current globes can only project on walls or screens, but cannot project on the surface of a sphere, and cannot directly touch the sphere to make geographic images directly Scales on a sphere, so its intuition is somewhat limited. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide a photoelectric earth projector, which can project geographic images on a model sphere, and can directly scale the geographic images on the surface of the model sphere. [0004] The technical solution adopted by the present invention to achieve the technical purpose is: the photoelectric globe projector includes a base; a tilting shaft i...

AI Technical Summary

Problems solved by technology

[0002] Some of the current electronic globes already have functions such as touch control and projection, but the current globes can only project on walls or screens, but cannot project on the surface of a sphere, and cannot directly touch the sphere to make geographic images directly Scales on a sphere, so its intuitiveness is more limited

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