CN204925515U

CN204925515U - One -way scattering system of cylinder grating

Info

Publication number: CN204925515U
Application number: CN201520465755.9U
Authority: CN
Inventors: 黄舒然
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-06-25
Filing date: 2015-06-25
Publication date: 2015-12-30
Anticipated expiration: 2025-06-25

Abstract

The utility model relates to an one -way scattering system of cylinder grating, organize (2) and one -way diffuser screen (3) including projector (1), fresnel lens, fresnel lens group (2) is relative by two and fresnel lens that establish constitutes, one -way diffuser screen (3) set up in the middle of two fresnel lens, projector (1) just sets up fresnel lens group (2). The projection light that projector (1) sent forms the strip and goes out pupil (4) after fresnel lens group (2) and one -way diffuser screen (3). Through verifying, the utility model provides an one -way scattering system of cylinder grating can show the stereo image who has 60 view points, and system's angular resolution is 6, shows that resolution ratio is high, and the stereo image hoverheight is 130mm. Have a plurality of view points, realize 360 panorama bore holes and watch, and a lot of people's simultaneous observation, stereo image suspension and tangible realizes human -computer interaction, is an effectual stereoscopic display technology comprehensive more.

Description

The unidirectional scattering system of cylindrical grating

Technical field

The utility model relates to a kind of novel panorama, suspends, and tangibly three-dimensional display system, particularly relate to the unidirectional scattering system of a kind of cylindrical grating, belong to Volumetric display technical field.

Background technology

Three-dimensional stereo display technique gives observer with impression on the spot in person to a certain extent, the scene of objective world can be reappeared truly, the depth perception of displaying chart picture, stereovision and authenticity, its application widely, as medical science, building, visualization in scientific computing, video display amusement, military training, video communication etc.The anaglyph spectacles used when watching three-dimensional film now, technology is comparative maturity, but it only has two width disparity maps, and the disparity map of auto-stereoscopic display also only has 9 width, only can form eight anaglyphs pair, and range of observation is by considerable restraint.But people are no longer satisfied with less range of observation, and have the view mode of distance perspective and estrangement sense, wish that obtaining one can panorama watch, stereopsis suspends, and tangibly three-dimensional display system.The 3D stereo display technique overwhelming majority is now not very touch-type, and namely observer and stereopsis are in a distance, there is estrangement sense, can not realize man-machine interaction.

Utility model content

In order to overcome the deficiencies in the prior art, resolving the problem of prior art, making up the deficiency of existing existing product in the market.

The utility model provides the unidirectional scattering system of a kind of cylindrical grating, comprise projector, Fresnel Lenses group and unidirectional diffuser screen, described Fresnel Lenses group is made up of the Fresnel Lenses that two are established relatively, described unidirectional diffuser screen is arranged in the middle of two Fresnel Lenses, and described projector is just arranged Fresnel Lenses group.

Preferably, the projected light that above-mentioned projector sends forms strip emergent pupil after Fresnel Lenses group and unidirectional diffuser screen.

Preferably, above-mentioned unidirectional diffuser screen is cylindrical grating.

Preferably, above-mentioned projector is RGB minitype projection machine and white light LCOS minitype projection machine.

Through checking, the unidirectional scattering system of the cylindrical grating that the utility model provides can show the stereo-picture with 60 viewpoints, and system angle resolution is 6 °, and display resolution is high, and stereopsis hoverheight is 130mm.Have multiple viewpoint, realize the viewing of 360 ° of panorama bore holes, and can many people observe simultaneously, stereopsis suspends and tangible, and realizing man-machine interaction, is one stereo display technique more comprehensively and effectively.

Accompanying drawing explanation

Fig. 1 is the utility model structure level direction schematic diagram;

Fig. 2 is the utility model structure vertical direction schematic diagram.

Reference numeral: 1-projector; 2-Fresnel Lenses group; The unidirectional diffuser screen of 3-; 4-strip emergent pupil.

Embodiment

Understand for the ease of those of ordinary skill in the art and implement the utility model, below in conjunction with the drawings and the specific embodiments, the utility model being described in further detail.

The unidirectional scattering system of the cylindrical grating that the utility model provides, comprise projector 1, Fresnel Lenses group 2 and unidirectional diffuser screen 3, Fresnel Lenses group 2 is made up of the Fresnel Lenses that two are established relatively, unidirectional diffuser screen 3 is arranged in the middle of two Fresnel Lenses, and projector 1 is just arranged Fresnel Lenses group 2.The projected light that projector 1 sends forms strip emergent pupil 4 after Fresnel Lenses group 2 and unidirectional diffuser screen 3.Unidirectional diffuser screen 3 is cylindrical grating.Projector 1 is RGB minitype projection machine and white light LCOS minitype projection machine.

The effect of the cylindrical grating that the utility model provides unidirectional scattering system central column face grating is the scattering effect by self, by projector's projection objective emergent pupil through Fresnel Lenses imaging, launch in vertical direction, thus meet the viewing requirement of the beholder of height between 150cm ~ 190cm, namely the instantaneous strip emergent pupil vertical direction of system is of a size of 400mm.And in the horizontal direction, the size of cylindrical grating to the instantaneous strip emergent pupil of system does not do any change.

A pointolite can image in a bit through two panels Fresnel Lenses, the meaning applying unidirectional diffuser screen is a point to be launched into a striation in vertical direction, the eyes of beholder are positioned at any point on this striation, same image can be seen, this just meets the viewing requirement of different height beholder, at this, select cylindrical grating to realize unidirectional diffuser screen.

What projector 1 adopted is minitype projection machine, and be specially the portable projector of weight less than 1 kilogram, external form is similar to conventional projectors, but weight and volume are more frivolous, and brightness, about below 200lm, adopts LED or LASER Light Source.

Minitype projection machine mainly contains two kinds: RGB minitype projection machine and white light LCOS minitype projection machine.RGB minitype projection machine be R, G, B tri-look alternating transmissive out, a certain moment only has the passage of a color to open, R, G, B tri-passages switch fast, and due to persistence of vision, observer can see the image of full color.

White light LCOS minitype projection machine be R, G, B tri-look transmit simultaneously, three Color Channels, without the need to switching, work simultaneously.And our system requirements aperture diaphragm High Rotation Speed, projector is switched, if use RGB minitype projection machine, when rotational speed arrives certain value, just probably occur the phenomenon that image three look is separated, preferably, native system selects white light LCOS minitype projection machine.

The embodiment of the above is better embodiment of the present utility model; not limit concrete practical range of the present utility model with this; scope of the present utility model comprises and is not limited to this embodiment, and the equivalence change that all shapes according to the utility model, structure are done is all in protection domain of the present utility model.

Claims

1. the unidirectional scattering system of cylindrical grating, it is characterized in that: the unidirectional scattering system of described cylindrical grating comprises projector (1), Fresnel Lenses group (2) and unidirectional diffuser screen (3), described Fresnel Lenses group (2) is made up of the Fresnel Lenses that two are established relatively, described unidirectional diffuser screen (3) is arranged in the middle of two Fresnel Lenses, and described projector (1) is just arranged Fresnel Lenses group (2).

2. the unidirectional scattering system of cylindrical grating according to claim 1, is characterized in that: the projected light that described projector (1) sends forms strip emergent pupil (4) after Fresnel Lenses group (2) and unidirectional diffuser screen (3).

3. the unidirectional scattering system of cylindrical grating according to claim 1, is characterized in that: described unidirectional diffuser screen (3) is cylindrical grating.

4. the unidirectional scattering system of cylindrical grating according to claim 1, is characterized in that: described projector (1) is RGB minitype projection machine and white light LCOS minitype projection machine.