CN103969937A - Multi-projection three-dimensional display device and method based on pupil compound application - Google Patents

Abstract

The invention discloses a multi-projection three-dimensional display device based on pupil compound application. The multi-projection three-dimensional display device comprises a multi-projection array, a longitudinal directional diffuser screen and a controller, wherein the multi-projection array and the longitudinal directional diffuser screen are sequentially arranged along a light path, and the controller is connected with the multi-projection array. The multi-projection array is composed of projector assembly units which are placed on the same cambered surface and are arranged in a uniformly-spaced mode, each projector assembly unit is composed of a plurality of overlaid projectors, and each projector has different pupil orientation angles. The invention further discloses a multi-projection three-dimensional display method based on pupil compound application. According to the multi-projection three-dimensional display device and method based on pupil compound application, the projectors in the projector assembly units are spliced in an angle mode, the emergent angle of each projector assembly unit is effectively enlarged, the defects caused by narrow projection angles of the projectors are overcome, the size of the area seen by an observer in an observation area is increased, and therefore the observer can achieve better visual experience.

Description

Many projection three-dimensionals display device and method based on pupil compound use

Technical field

The present invention relates to large scale dimension display technologies field, particularly a kind of many projection three-dimensionals display device and method based on pupil compound use.

Background technology

Compared to other sense organs of the mankind, visually-perceptible is considered to one of most important channel of people's acquired information, and therefore the research of display technique is also more and more subject to the attention of educational circles.Be the target that the mankind seek assiduously at the virtual three-dimensional scenic of real space reconstruct, because it can provide more intuitive visual experience, abundanter details, have more the scene of expressive force, be the development trend of following display technique always.At present, dimension display technologies is mainly divided into four classes: stereoscopic dimension display technologies, from stereoscopic dimension display technologies, body dimension display technologies, light field dimension display technologies and hologram three-dimensional display technique etc.Wherein, many projections light field dimension display technologies is subject to people's attention all the more by feat of its outstanding expressive force.

Existing document is (referring to Qing Zhong, YifanPeng, Haifeng Li, Chen Su, WeidongShen, algorithmsfor360 ° of multiple-projector-type3D display.Applied Optics of and Xu Liu.Multiview and light-field reconstruction, Vol.52, Issue19, pp.4419-4425,2013) a kind of large scale based on reconstruction of optical wave field technology projection three-dimensional display device and method more than 360 ° proposed.This device can large scale panorama reappears three-dimensional scenic, have 360 ° can watch, image resolution ratio advantages of higher.But, there is certain defect in this device: owing to being subject to the restriction of the projection angle of projector own, spectators are specific part in reconstruct scene can only be seen in a position, and cannot reach theoretic whole scene, and this point has greatly limited further developing and applying of this technology.

Summary of the invention

The object of the invention is to improve the narrow and small display effect problem in viewing area existing in reconstruction of optical wave field technology, propose a kind of many projection three-dimensionals display device and method based on pupil compound use.

Many projection three-dimensionals display device based on pupil compound use, comprises many projected array and the portrait orientation diffuser screen arranged successively along light path, and the controller being connected with many projected array;

Described many projected array are made up of the projector assembled unit that is positioned at same cambered surface and uniformly-spaced arrange, each projector assembled unit is made up of many stacked projector, and every projector has different pupils towards angle.

Wherein, the projection angle of each projector meets splicing relation, by the splicing of projection angle, realizes the object that expands projection angle.

Described portrait orientation diffuser screen is transmission-type cylindrical grating, and this transmission-type cylindrical grating has horizontal grid line direction, realizes the object of launching on pupil vertical direction.

Preferably, described portrait orientation diffuser screen is the optical holography screen with identical longitudinal scattering properties.

Described portrait orientation diffuser screen is cambered surface or plane, can select according to the needs of system.

Described controller is connected with every projector in many projected array; Described controller is for carrying out three dimensions description to three-dimensional scenic, and viewpoint and image space information are calculated the projected image of every projector according to the observation, projected image are sent into respectively to corresponding projector, as the image source of 3-D display.

In the time that projector is installed, the viewing area range size W of the half angle θ of projector and portrait orientation diffuser screen should meet:

$W=2*D*\tan \left(\arcsin \left(\frac{R*\sin \mathrm{\θ}}{D}\right)\right)$

Wherein, R is the radius of many projected array cambered surface of living in, and D is the distance of human eye to portrait orientation diffuser screen.

The present invention also provides a kind of many projection three-dimensionals display packing based on pupil compound use, comprises the steps:

(1) the aerial image position of definite three-dimensional information that will show;

(2) according to described counter the pushing away in aerial image position, utilize reconstruction of optical wave field technology, calculate the required projected image of projector assembled unit in many projected array;

(3), according to angular relationship between the projector in projector assembled unit, calculate every projected image that projector is independent, and input projector;

(4) projected image of many projected array launches through portrait orientation diffuser screen, and at viewing area joining image-forming.

Compared with prior art, major advantage of the present invention is as follows:

By the projector angle splicing in projector assembled unit, effectively expand the shooting angle of projector combination, improve the narrow and small defect causing of projector projection angle, strengthened the area size that observer sees at viewing area, thereby made observer can obtain better visual experience.This structure can provide the 3-D view with fine and smooth transverse parallaxes for observer, and meets the demand that many people's various visual angles are watched, for 3-D display provides huge prospect in application widely.

Brief description of the drawings

Fig. 1 is many projection three-dimensionals display technique of the present invention viewing area schematic diagram;

Fig. 2 is light field splicing of the present invention and display effect schematic diagram;

Fig. 3 is the many projection three-dimensionals display device structure schematic diagram that the present invention is based on pupil compound use;

Fig. 4 (a) is projector assembled unit front elevation of the present invention;

Fig. 4 (b) is projector assembled unit projection angle splicing schematic diagram of the present invention;

Fig. 5 is portrait orientation diffuser screen structure of the present invention and functional schematic.

Embodiment

Below in conjunction with drawings and Examples, the invention will be further described, but should not limit the scope of the invention with this.

First refer to Fig. 1, Fig. 1 be the present invention many projection three-dimensionals display technique viewing area schematic diagram based on pupil compound use, the half angle θ of viewing area range size W and projector has following relation:

$W=2*D*\tan \left(\arcsin \left(\frac{R*\sin \mathrm{\θ}}{D}\right)\right)$

R is the radius of many projected array cambered surface of living in, and D is the distance of human eye to portrait orientation diffuser screen.

Can find that the half angle θ correlation of viewing area range size W and projector, in specific implementation process, owing to being limited to the difficult change of projector hardware configuration, cannot strengthen the half angle θ of projector.

As shown in Figure 3, Fig. 3 is the many projection three-dimensionals display device structure schematic diagram that the present invention is based on pupil compound use.What device set gradually along optical path direction is many projected array 1 and portrait orientation diffuser screen 3, and controller 4 passes through electrical connection with many projected array 1, not in light path.

The projector assembled unit 2 that many projected array 1 are uniformly-spaced arranged by multiple concentric arcs forms, and the number of projector assembled unit 2 is needed to determine by system.

Projector assembled unit 2 is made up of two or more projector, and the number of projector is determined by system requirements.As shown in Figure 2, the pupil of these projector is on same level position and towards different projecting directions, and projection angle has splicing relation.In the present embodiment, projector assembled unit 2 is made up of two projector, but should not limit the scope of the invention with this.Position relationship is as shown in Fig. 4 (a) and Fig. 4 (b), and the pupil of two projector is on same vertical curve, and the view field's edge splicing of the two, realizes the object that expands projection angle.

Portrait orientation diffuser screen 3 is transmission-type cylindrical grating or the optical holography screen with identical longitudinal three chromatic dispersion characteristics.As shown in Figure 5, transmission-type cylindrical grating grid line direction is laterally, realizes the object of launching on pupil vertical direction.Portrait orientation diffuser screen described in the present embodiment is plane screen, but should not limit the scope of the invention with this.

Controller 4 is connected with every projector in many projected array.Controller is for carrying out three dimensions description to three-dimensional scenic, and viewpoint and image space information are calculated the projected image of every projector according to the observation, projected image are sent into respectively to corresponding projector, as the image source of 3-D display.

Taking the three-dimensional display apparatus shown in Fig. 2 as example, the present invention also provides a kind of many projection three-dimensionals display packing based on pupil compound use.Comprise following steps:

(1) the aerial image position of definite three-dimensional information that will show, i.e. so-called three-dimensional scenic;

(2) counter the pushing away of aerial image positional information being obtained by step (1), utilizes reconstruction of optical wave field technology, calculates the needed projected image of projector assembled unit in tripleplane's array;

(3), as shown in Fig. 4 (b), according to angular relationship between the projector in projector assembled unit, calculate every projected image that projector is independent, and input projector;

(4) projected image of many projected array shields longitudinal expansion effect through directional scattering, as shown in Figure 2, and at viewing area joining image-forming.

Although be that the present invention is described further by the mode of illustrating and give an example here; but should be realized that; the present invention is not limited to the above-described embodiment and examples; it is illustrative that description above is only considered to; and it is nonrestrictive; those skilled in the art can make multiple conversion or amendment, as long as no leaving the scope and spirit essence of establishing in claims, are all considered as within protection scope of the present invention.

Claims (8)

1. the many projection three-dimensionals display device based on pupil compound use, is characterized in that, comprises many projected array and the portrait orientation diffuser screen arranged successively along light path, and the controller being connected with many projected array;

Described many projected array are made up of the projector assembled unit that is positioned at same cambered surface and uniformly-spaced arrange, each projector assembled unit is made up of many stacked projector, and every projector has different pupils towards angle.

2. the many projection three-dimensionals display device based on pupil compound use as claimed in claim 1, is characterized in that, the projection angle of each projector meets splicing relation.

3. the many projection three-dimensionals display device based on pupil compound use as claimed in claim 2, is characterized in that, described portrait orientation diffuser screen is transmission-type cylindrical grating, and this transmission-type cylindrical grating has horizontal grid line direction.

4. the many projection three-dimensionals display device based on pupil compound use as claimed in claim 1, is characterized in that, described portrait orientation diffuser screen is the optical holography screen with identical longitudinal scattering properties.

5. the many projection three-dimensionals display device based on pupil compound use as claimed in claim 4, is characterized in that, described portrait orientation diffuser screen is cambered surface or plane.

6. the many projection three-dimensionals display device based on pupil compound use as claimed in claim 1, is characterized in that, described controller is connected with every projector in many projected array;

Described controller is for carrying out three dimensions description to three-dimensional scenic, and viewpoint and image space information are calculated the projected image of every projector according to the observation, projected image are sent into respectively to corresponding projector, as the image source of 3-D display.

7. the many projection three-dimensionals display device based on pupil compound use as claimed in claim 1, is characterized in that, the viewing area range size W of the half angle θ of projector and portrait orientation diffuser screen should meet:

$W=2*D*\tan \left(\arcsin \left(\frac{R*\sin \mathrm{\θ}}{D}\right)\right)$

Wherein, R is the radius of many projected array cambered surface of living in, and D is the distance of human eye to portrait orientation diffuser screen.

8. the many projection three-dimensionals display packing based on pupil compound use, is characterized in that, comprises the steps:

(1) the aerial image position of definite three-dimensional information that will show;

(2) according to described counter the pushing away in aerial image position, utilize reconstruction of optical wave field technology, calculate the required projected image of projector assembled unit in many projected array;

(3), according to angular relationship between the projector in projector assembled unit, calculate every projected image that projector is independent, and input projector;

(4) projected image of many projected array launches through portrait orientation diffuser screen, and at viewing area joining image-forming.