CN111246194A

CN111246194A - Projector array layout for 3D display device

Info

Publication number: CN111246194A
Application number: CN202010214790.9A
Authority: CN
Inventors: 黄辉; 徐文宇
Original assignee: Shenzhen Zhenxiang Technology Co ltd
Current assignee: Shenzhen Zhenxiang Technology Co ltd
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-06-05

Abstract

The invention relates to a projector array layout of 3D display equipment, which comprises a projection array arranged on a circular arc section horizontal support, wherein the projection array comprises N layers of projectors which are arranged in an up-down stacked manner, the N layers of projectors comprise a basic layer and N-1 auxiliary layers, and N is an integer more than or equal to 2; and the projectors in the auxiliary layers correspond to the adjacent projectors in the basic layer, and the projectors in the auxiliary layers are staggered from each other in the transverse direction. The projector array layout in the invention strengthens the transverse distribution density of the projectors by using the spatial positions of the upper layer and the lower layer, thereby achieving the effect of effectively weakening the phenomenon of vertical strips in 3D projection and improving the projection quality.

Description

Projector array layout for 3D display device

Technical Field

The invention relates to a projector layout for a 3D display device.

Background

The 3D exposure device based on the projection array is composed of a projector, an optical holographic diffusion film screen and a control computer. A plurality of projectors are arranged on the arc-segment horizontal support to form a projection array, and each projector projects virtual camera images with different visual angles. The optical holographic diffusion film screen is placed at the circle center of the circular arc section horizontal support, the optical axis of the projector is aligned to the center of the screen, the virtual camera image is projected onto the optical holographic diffusion film screen through the projector, and a person can observe a 3D picture by naked eyes. The conventional projector layout is that only one layer of projector is installed on a horizontal support, and because an included angle distance exists between two adjacent projectors, a relatively obvious vertical strip can be observed on a projection screen, particularly the vertical strip in a background area in an image is extremely obvious, the 3D image watching effect is seriously influenced, and therefore the projector layout of the 3D display equipment has improved requirements.

Disclosure of Invention

One technical problem addressed by one aspect of the present disclosure is to provide an improved projector array layout of a 3D display device.

The technical scheme adopted by the invention for solving the technical problems is as follows: the projector array layout of the 3D display equipment comprises a projection array arranged on a horizontal support of an arc section, wherein the projection array comprises N layers of projectors which are arranged in an up-and-down stacked manner, the N layers of projectors comprise a basic layer and N-1 auxiliary layers, and N is an integer greater than or equal to 2; and the projectors in the auxiliary layers correspond to the adjacent projectors in the basic layer, and the projectors in the auxiliary layers are staggered from each other in the transverse direction.

In the projector array layout of the 3D display device, the N layers of projectors are uniformly arranged in the transverse direction.

As in the projector array layout of the 3D display device described above, any two laterally adjacent projectors in each layer of projectors have a spacing therebetween.

In the projector array layout of the 3D display device as described above, the distance between the adjacent projectors is smaller than the thickness of a single projector.

According to the projector array layout of the 3D display device, included angles formed between adjacent projectors in the base layer corresponding to the center of the bracket are all δ; in the N layers of projectors, an included angle formed between any two projectors which are adjacent in the horizontal plane in projection is delta/N.

One advantageous effect brought by one aspect of the present disclosure: the projector array layout method can effectively improve the vertical stripe phenomenon in 3D projection and optimize the projection effect.

Drawings

Certain embodiments of the invention will now be described in detail, by way of example and not limitation, with reference to the figures, wherein like reference numerals identify identical or similar elements or portions. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale.

In the drawings:

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic diagram of a projector array layout according to the present invention;

FIG. 3 is a schematic view of an embodiment of the present invention;

FIG. 4 is a schematic view of a second embodiment of the present invention;

FIG. 5 is a third schematic view of the present invention;

FIG. 6 is a schematic diagram illustrating the relationship between the three horizontal planes in projection according to an embodiment of the present invention;

the designations in the figures illustrate the following:

1. a support; 2. n layers of projectors; 3. a 3D display device; 100. a base layer; 101. an auxiliary layer; a \ B \ C \ D and a projector.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.

All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.

The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalent, but not excluding other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Referring to the attached drawing 1, a plurality of projectors are installed on an arc-segment horizontal support 1 to form a projection array, each projector projects virtual camera images with different viewing angles, a 3D display device 3 optical holographic diffusion film screen is placed at the position of the circle center of the arc-segment horizontal support 1, the center of the screen corresponds to the optical axis of the projector, the virtual camera images are obtained by erecting virtual cameras at different positions and distances in the viewing field after a 3D model is rendered in 3D modeling software. And projecting the virtual camera image onto an optical holographic diffusion film screen, so that a person can observe a 3D picture by naked eyes.

The projection array adopted at present is a single-layer projector, the number of the projectors is limited, and more obvious vertical strips appear when the projectors are observed on a projection screen, particularly the vertical strips in a background area in an image are extremely obvious, so that the 3D image watching effect is seriously influenced. If increase the horizontal overall arrangement density of projecting apparatus, increase the quantity of projecting apparatus on the horizontal unit arc length promptly, can reduce the width of the last vertical strip of projection screen, this strip is narrower, and 3D watches the effect better, and to this strip width when people's eye department occupies the contained angle and is less than people's eye distinguishable arc angle, this strip can be difficult to observe.

The horizontal layout density of the projectors is increased for improving the 3D viewing effect, but due to the influence of the thickness of the projector device, the adjacent projectors can still view obvious vertical strips even if being placed in a close contact mode. The radius of establishing circular arc section horizontal stand 1 is 2m for D, and the installation is hugged closely to the projecting apparatus, and mainstream portable projecting apparatus thickness is 20mm for D on the current market, and the contained angle that adjacent projecting apparatus and 1 centre of a circle of support constitute is:

wherein rad is in units of radians. Typically, the human eye can resolve arc angles of 0.59 angular divisions (one angle is one sixtieth of one degree) in exchange for an arc:

the following can be compared: the included angle of the adjacent projectors is far larger than the angle of arc which can be distinguished by human eyes, and the projection effect is poor, so the layout mode of the existing projectors needs to be improved.

Referring to fig. 2-6, a projector array layout of a 3D display device 3 is shown, including a projection array installed on an arc segment horizontal support 1, where the projection array includes N layers of projectors 2 in an up-down stacked layout, the N layers of projectors 2 include a base layer 100 and N-1 layers of auxiliary layers 101, where N is an integer greater than or equal to 2; between adjacent projectors in the base layer 100, the projectors in the auxiliary layers 101 correspond to each other, and the projectors in the auxiliary layers 101 are laterally displaced from each other.

Since the projectors themselves have a certain thickness, even if the projectors of the base layer 100 are arranged closely, the projection ends of two adjacent projectors have a certain arc length, and an included angle exists between the projection ends of two adjacent projectors compared with the center of the bracket 1, so that the vertical stripe phenomenon on the projection screen is difficult to avoid. Therefore, at least two layers of projectors are adopted in the scheme, one layer is the basic layer 100, and the projectors of the other auxiliary layers 101 are used for making up for the interval between the adjacent projectors in the basic layer 100, and the transverse distribution density of the projectors is strengthened by using the spatial positions of the upper layer and the lower layer, so that the effect of effectively weakening the vertical strip phenomenon in 3D projection is achieved, and the projection quality is improved. The projectors of the auxiliary layers 101 are laterally displaced, and with the X axis as a reference, the X axis values of the projectors are different, so that overlapping of projection fields of the projectors in the auxiliary layers 101 is avoided.

Each layer projecting apparatus is on horizontal adopts evenly distributed's mode, and each layer projecting apparatus can be hugged closely the distribution, but preferably, has the interval between the arbitrary horizontal adjacent projecting apparatus in each layer projecting apparatus, and the setting of interval is favorable to the heat dissipation, and the interval position has been remedied by the auxiliary layer 101 projecting apparatus of range upon range of overall arrangement from top to bottom, from this when taking into account the radiating effect, has effectively solved projection screen's vertical banding phenomenon. The distance is not set to be too wide, and the distance between two adjacent projectors in each layer of projectors is generally smaller than the thickness of a single projector.

In some embodiments, included angles formed between adjacent projectors in the base layer 100 corresponding to the center of the support 1 are δ; in the N layers of projectors 2, an included angle formed between any two projectors which are adjacent in the horizontal plane projection is delta/N.

In particular, referring to fig. 3-4, a two layer projector is shown, with the base layer 100 below and the auxiliary layer 101 above in fig. 3, and vice versa in fig. 4. As can be seen from the drawings, the projectors of the auxiliary layer 101 are located at the horizontal middle position of two adjacent projectors of the base layer 100, and the horizontal included angle of the projectors in the double-layer layout can reach half of the included angle in the single-layer layout, that is, the included angle is originally δ, and then is reduced to δ/2. Referring to fig. 5, a three-layer layout is used, in which the basic layer 100 is in the middle and an auxiliary layer 101 is above and below the basic layer, so that the horizontal angle of the projector is delta and then reduced to delta/3, and a four-layer layout (not shown) can be used, in which the angle can be reduced to delta/4. The density of the projectors is increased in the transverse direction, and the included angle is reduced, so that the phenomenon of vertical strips in the projection screen can be weakened. In practice, it is most practical to use a two-layer, three-layer, or four-layer top-bottom stack layout, which is considered by combining the height size of the projector, the projection field overlap of the projection arrays, and the height of the projection screen.

Referring to fig. 6, a description will be given of "projectors laterally adjacent to each other in horizontal plane projection", where the N-layer projectors 2 project on the horizontal plane as a whole, and the projectors laterally adjacent to each other in horizontal plane projection are the aforementioned projectors laterally adjacent to each other in horizontal plane projection ". Taking fig. 6 as an example, when the N-layer projectors 2 project on a horizontal plane as a whole and the adjacent relationship in the lateral direction of the projectors is determined according to the projection positions, the projectors in the figure are adjacent in the lateral direction in the order of a (base layer 100), B (auxiliary layer 101), C (auxiliary layer 101), and D (base layer 100). The included angle between the adjacent projector A and the adjacent projector B is delta/3, the included angle between the adjacent projector B and the projector C is delta/3, and the included angle between the adjacent projector C and the projector D is delta/3.

In summary, the projector of the upper and lower stacked slot type is adopted, the projector of the auxiliary layer 101 is used for making up the gap formed by the projector of the base layer 100 by virtue of the upper and lower spatial positions, the base layer 100 can be located above and below the auxiliary layer 101, or among a plurality of auxiliary layers 101, the number of the projector mounting positions on the support 1 only needs to be increased according to the position of the stacked layout, and the fixing mode of the projector can adopt the existing scheme. Therefore, the upper and lower stacking layout of the projector is realized, the vertical stripe phenomenon on the projection screen is improved, and the 3D projection effect is optimized.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, as it will be apparent to those skilled in the art that various modifications, combinations and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

The utility model provides a 3D display device's projecting apparatus array overall arrangement, including installing the projection array on the circular arc section horizontal stand, its characterized in that: the projection array comprises N layers of projectors which are in a vertically stacked layout, the N layers of projectors comprise a basic layer and N-1 layers of auxiliary layers, and N is an integer greater than or equal to 2;

and the projectors in the auxiliary layers correspond to the adjacent projectors in the basic layer, and the projectors in the auxiliary layers are staggered from each other in the transverse direction.
2. The projector array layout of a 3D display device of claim 1, wherein: the N layers of projectors are uniformly distributed in the transverse direction.
3. The projector array layout of a 3D display device of claim 2, wherein: any two projectors in each layer are transversely adjacent to each other with a space between the projectors.
4. A projector array layout for a 3D display device according to claim 3, characterized in that: the distance between the adjacent projectors is smaller than the thickness of the single projector.
5. The projector array layout of a 3D display device of claim 2, wherein: included angles formed between every two adjacent projectors in the basic layer and corresponding to the circle center of the support are delta; in the N layers of projectors, an included angle formed between any two projectors which are adjacent in the horizontal plane in projection is delta/N.