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Three-dimensional imaging system using Fresnel lenses

A Fresnel lens, three-dimensional technology, applied in optical components, optics, instruments, etc., can solve problems such as inability to present three-dimensional artistic effects, high requirements for optical components, and expensive production

Inactive Publication Date: 2012-08-22
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The imaging effect of the known technology cannot show a three-dimensional artistic effect, and the requirements for optical components are relatively high, and the production price is relatively expensive

Method used

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  • Three-dimensional imaging system using Fresnel lenses
  • Three-dimensional imaging system using Fresnel lenses
  • Three-dimensional imaging system using Fresnel lenses

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 As shown, the three-dimensional stereoscopic imaging system utilizing Fresnel lens is an optical structural device that forms a real image in kind, and it includes two Fresnel lenses, i.e. the first Fresnel lens 2 and the second Fresnel lens 3, wherein , fix the two Fresnel lenses in the device parallel to half the focal length of the lens, and place the object 1 to be a stereo image at the focal point of the left side of the left Fresnel lens. The stereoscopic image 4 formed by the object passing through two parallel Fresnel lenses is observed at the focal length on the right side of the lens. It is required that the center line of the imaged object must coincide with the main optical axis of the two Fresnel lenses.

Embodiment 2

[0027] Such as figure 2 As shown, the three-dimensional imaging device utilizing the Fresnel lens is generally placed vertically or obliquely in practical applications (such as image 3 ), so that the design of the device is relatively simple, and it is convenient for people to watch and appreciate. It is placed at the lower focal point of the Fresnel lens on the lower side and can be placed in parallel to a stage 5 that can rotate the object, so that the imaging object rotates, and the resulting The stereo image is also rotated.

[0028] In the three-dimensional imaging system utilizing Fresnel lens, wherein the imaging object is generally hollow, a program-controlled LED color-changing point light source can be installed inside the imaging object, for example, the electric light source can be installed in a hollow plastic sphere. If the light source is used, the color of the ball can be continuously changed, so that the image formed by the plastic ball can be more aestheti...

Embodiment 3

[0030] According to the three-dimensional stereoscopic imaging system utilizing Fresnel lens described in embodiment 2, an infrared sensing device is installed inside the device. Or give an introduction to the imaged object.

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PUM

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Abstract

The invention relates to a three-dimensional imaging system. The three-dimensional imaging system comprises two Fresnel lenses, and is an optical system for imaging real images of a real object, wherein the real object is placed nearby a focal plane of the Fresnel lenses, and light rays emitted by the object are refracted into parallel light beams through the first Fresnel lens. The parallel light beams are refracted by the second Fresnel lens and then form a real image on the focal plane of the Fresnel lenses. An observer can observe a three-dimensional image of an original object in a certain viewing angle range from a position which has an appropriate distance away from the second Fresnel lens. When the three-dimensional imaging system is actually used, different objects can be placed on the system according to different requirements and can provide three-dimensional real images for appreciation; and moreover, in order to enhance the effect, an object to be observed can be placed on a rotating platform, so that a three-dimensional image of the object in a range of 360 degrees can be observed. The appearance of the three-dimensional imaging system can be designed according to different requirements of users, and can be designed into a variety of forms.

Description

technical field [0001] The invention belongs to the field of optical imaging technology, and specifically relates to a three-dimensional stereoscopic imaging device that uses a Fresnel lens to realize real objects into real images, and is mainly used for public utilities and commercial advertisements; family viewing; school teaching demonstrations, etc. Background technique [0002] The known three-dimensional imaging device has a stereoscopic holographic imaging device disclosed in Chinese patent 00230318.3. It mainly consists of two concave mirrors buckled to form a scene imaging cavity. The scene is placed in the center of a concave mirror, and the other concave mirror There is an image hole in the center, and the focal lengths of the two concave mirrors are located on the mirror surface of the other side. The image area is outside the image hole. The imaging area can be the primary imaging area outside the mouth, or the primary imaging can be transferred to the desired pl...

Claims

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Application Information

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IPC IPC(8): G02B27/22
Inventor 魏臻郭富张岷李正男周欢
Owner TIANJIN UNIVERSITY OF TECHNOLOGY