Abstract: A large three-dimensional 3D image formation device includes four projectors, four optical reflecting lenses, four transparent reflecting lenses, mounting box and four image source reflecting lenses. The projectors project images onto the optical reflecting lenses, and the images are reflected to the image source optical reflecting lenses, such that the image source optical reflecting lenses have image source patterns, and the four image source patterns are projected to the four transparent reflecting lenses combined into an inverted pyramid shape, such that the four image source patterns can be combined at the center of the four transparent reflecting lenses, and viewers can see a 3D image floating in the air from any angle. The large three-dimensional 3D image formation device provides a lively 3D perception to enhance the value of the product.

Abstract: A three-dimensional 3D image formation device includes a mounting box, an image source device, a plurality of transparent reflecting lenses and a top panel. Reflection principles are used for reflecting a plurality of image sources of the image source device onto the transparent reflecting lenses tilted at an angle of 45 degrees, such that a viewer can view a 3D image floating in the air from any angle, and the 3D image formation device gives a lively 3D perception of the image to enhance the value of the product.