Reflection type geometric holographic display system

Abstract

The invention relates to the field of 3D display and discloses a reflection type geometric holographic display system. The system comprises at least one projector, an auxiliary imaging screen, a reflection-type geometric holographic screen located on one side of the auxiliary imaging screen or two reflection-type geometric holographic screens located on the two sides of the auxiliary imaging screen respectively, a supporting structure and a controller, and the reflection-type geometric holographic screens are used for carrying out retroreflection on light irradiated to the reflection-type geometric holographic screens; the number of viewpoints of the reflective geometric holographic display system is n; the mean value of the diameters of the light-transmitting parts of the lenses on the outermost side of the projector is D decimeters; the mean value of the projection light source power of the projector is P watt; the requirements are met: a reflective geometric holographic screen capable of modulating light rays at any angle to realize retro-reflection is introduced; according to the invention, the incident light is modulated, other optical modules are omitted, the cost is saved toa certain extent, the occupied space of the system is reduced. Meanwhile, optimized design parameter configuration is provided, and the purpose of considering both the display effect and the system reliability is achieved.

Description

technical field [0001] The invention relates to the field of 3D display, in particular to a reflective geometric holographic display system. Background technique [0002] Compared with traditional 2D display technology, 3D display technology can provide depth information, thereby displaying more visual information and making the displayed image more reductive. Therefore, 3D display technology is a very popular technology in academic research at present. Among them, the 3D display scheme based on holographic technology can restore the light field distribution of the real physical world in principle, thereby completely restoring all the optical characteristics of the 3D scene. The traditional holographic display technology uses the fluctuation characteristics of light to record the light intensity information and phase information of the scene at the same time, so as to realize the recording of the light intensity, color and depth of field of the scene. However, this method ...

AI Technical Summary

Problems solved by technology

However, it requires very precise human eye tracking methods to achieve 3D display, and the structural limitations of the display system are also relatively large. In many application scenarios, it cannot provide enough system layout space for it, and the system is complex and costly.

In addition, the optical parameter settings of this display system need to be carefully designed to ensure the ideal display effect and the reliability of the display system, otherwise the display system may not be able to achieve the ideal display effect or fail to guarantee reliability due to inappropriate display parameters

In addition, this transmissive imaging system also has the problem of low light source utilization

The projected light is refracted and divided into four beams, of which only one beam participates in imaging, and the three non-imaging beams are likely to interfere with the formed image and reduce the imaging quality

[0005] The publication number is CN108269511A, a kind of floating display system in the air, which discloses a two-dimensional planar air imaging scheme, and discloses a retroreflective right-angled triangular prism array, which includes a series of light-reflecting screens of right-angled triangular prisms. The right-angle triangular prism can only realize the retroreflective imaging function of light parallel to its cross section. When the light is not parallel to the cross section, it cannot realize the retroreflective function. Other optical modules are used to modulate the light to achieve retroreflective imaging; at the same time, the display solution of this application is a fixed display, and the user can only watch the off-screen image of the space in a specific external device, and cannot realize dynamic display. larger

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