CN215067708U

CN215067708U - Projection screen and projection device

Info

Publication number: CN215067708U
Application number: CN202120950838.2U
Authority: CN
Inventors: 欧阳剑; 舒剑泽; 张聪; 胡震宇
Original assignee: Shenzhen Huole Science and Technology Development Co Ltd
Current assignee: Shenzhen Huole Science and Technology Development Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-12-07
Anticipated expiration: 2031-04-30

Abstract

The present disclosure relates to a projection screen and a projection device, the projection screen having a curtain (1) for displaying images, the projection screen comprising an infrared coating, the infrared coating being arranged circumferentially at the edge of the front face of the projection screen for marking the outer contour of the projection screen. Like this, even under the condition that projection screen and wall fuse completely, through the design that increases infrared coating, infrared camera also can accurately acquire projection screen's outline, does not receive projection screen and wall colour difference's influence, realizes fast that automatic to the screen calibration, simultaneously, can realize projection screen and wall and fuse completely, improves holistic visual effect.

Description

Projection screen and projection device

Technical Field

The present disclosure relates to the field of laser projection devices, and in particular, to a projection screen and a projection device.

Background

Projectors, especially ultra-short-focus projectors, are sensitive to placement positions, and a slight placement error may cause large distortion of images, so that screen alignment is required. In the related art, the position information of a screen frame is captured by a wide-angle camera facing a projection screen, and automatic screen alignment and distortion calibration of a projection picture are realized by matching a software algorithm and hardware. However, in the existing calibration process, the wide-angle camera cannot accurately and quickly acquire the position information of the screen frame, which affects the calibration process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a projection screen and projection equipment to solve the technical problem that can't accurately, acquire the positional information of screen frame fast, carry out the calibration.

In order to achieve the above object, the present disclosure provides a projection screen having a curtain for displaying an image, the projection screen including an infrared coating layer disposed at an edge of a front surface of the projection screen in a circumferential direction for marking an outer contour of the projection screen.

Optionally, the infrared coating is disposed on an edge of the front side of the curtain.

Optionally, projection screen is still including setting up the tensioning subassembly at the back of curtain, the edge of curtain is provided with the sleeve pipe and wears to establish support piece in the sleeve pipe, tensioning subassembly include outer frame and with the mounting that outer frame is connected, wherein, the mounting has the opening, with the edge of curtain is fixed when buckling to the back the sleeve pipe.

Optionally, the projection screen further includes a fixed frame disposed around the curtain, and the infrared coating is disposed on an edge of a front surface of the fixed frame.

Optionally, projection screen is still including setting up the tensioning assembly at the back of curtain, the edge of curtain is provided with the sleeve pipe and wears to establish support piece in the sleeve pipe, tensioning assembly include outer frame and with the mounting that outer frame is connected, wherein, the mounting has the opening, so that the edge of curtain is fixed when buckling to the back the sleeve pipe, fixed frame fixes outer frame with on the curtain, fixed frame is transparent material, and with be provided with on the linkage segment of the positive looks joint of curtain infrared coating.

Optionally, the curtain and the outer frame are respectively configured as a square structure, and the fixed frames are respectively fixed on four edges of the square structure.

Optionally, the fixed frame is constructed into a U-shaped structure, the U-shaped structure includes a first connecting section connected with the curtain in a clamping manner at the front, a second connecting section connected with the curtain in a clamping manner at the back, and a side clamping section, wherein the length of the first connecting section is greater than that of the second connecting section.

Optionally, the projection screen further includes a corner frame fixed at a joint between adjacent fixed frames, and the infrared coating is disposed on a front surface of the corner frame.

Optionally, the outer frame includes a frame body and an inner side wall for installing the fixing pieces, a corner of the inner side wall is located adjacent to a connecting piece is arranged between the fixing pieces, and the connecting piece is used for supporting the sleeve.

According to a second aspect of the present disclosure, there is also provided a projection apparatus including a projector and the projection screen described above.

Through the technical scheme, even under the condition that the projection screen and the wall are completely fused, through the design of the infrared coating, the infrared camera can also accurately acquire the outer contour of the projection screen, is not influenced by chromatic aberration of the projection screen and the wall, quickly realizes automatic screen calibration, and meanwhile can realize the complete fusion of the projection screen and the wall and improve the overall visual effect.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIGS. 1-4 are schematic diagrams of a projection screen calibration process;

FIG. 5 is a schematic diagram of a projection screen provided in an exemplary embodiment of the present disclosure;

fig. 6 is a partially enlarged view of a portion a in fig. 5;

FIG. 7 is a cross-sectional view of a projection screen provided in an exemplary embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a projection screen provided in accordance with another exemplary embodiment of the present disclosure;

fig. 9 is a partially enlarged view of a portion B in fig. 8;

FIG. 10 is a cross-sectional view of a projection screen provided in another exemplary embodiment of the present disclosure;

fig. 11 is a schematic diagram of a tension assembly in a projection screen provided in an exemplary embodiment of the present disclosure.

Description of the reference numerals

1-curtain, 10-sleeve, 11-support piece, 2-tensioning assembly, 21-outer frame, 211-frame body, 212-inner side wall, 22-fixing piece, 23-fastening piece, 4-fixing frame, 5-corner frame, 6-connecting piece, 7-mounting platform, 8-projector, 91-infrared camera, 92-infrared light source, 101-initial projection picture, and 102-optimal projection position.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, in the case where no description is made to the contrary, the use of an orientation word such as "front" means that a side facing a user is "rear" in a case where a projection screen is normally installed, and a side opposite to the "front" means "inner and outer" of outlines of respective components, and in addition, the use of terms such as "first", "second", and the like is intended to distinguish different components and is not sequential or important. In the following description, when referring to the figures, the same reference numbers in different figures denote the same or similar elements, unless otherwise explained.

As shown in fig. 1 to 4, in the automatic screen alignment calibration process, the infrared camera 91 and the infrared light source 92 cooperate to capture position information of an outer contour of the projection screen, that is, an optimal projection position 102 shown in fig. 2, and adjust the projector 8 through software algorithm and hardware cooperation, so that an initial projection image 101 of the projector 8 completely coincides with the optimal projection position 102, thereby completing the automatic screen alignment calibration.

In order to solve the problem that the outer contour of the projection screen is obtained in the screen calibration process, especially when the projection screen and the wall surface are completely fused, the smaller the color difference between the outer edge of the projection screen and the wall surface is, the more difficult the infrared camera 91 and a software algorithm are to distinguish the outer contour and the wall surface of the screen, and to ensure that the position information of the outer contour of the projection screen can be accurately obtained, as shown in fig. 1 to 6, the present disclosure provides a projection screen which is provided with a curtain 1 for displaying images, wherein the projection screen comprises an infrared coating (not shown in the figure), and the infrared coating is circumferentially arranged on the edge of the front surface of the projection screen and used for marking the outer contour of the projection screen. It should be noted here that the infrared coating may be disposed along the edge of the projection screen for a complete circle to obtain the position information of the completely closed outer contour, and in other embodiments, the infrared coating may be disposed at intervals along the circumferential direction to form a segment of infrared coating, which can also achieve the effect of marking the outer contour of the projection screen, and all belong to the protection scope of the present disclosure.

Through the technical scheme, even under the condition that the projection screen and the wall surface are completely fused, through the design of the infrared coating, the infrared camera 91 can also accurately acquire the outer contour of the projection screen, is not influenced by the chromatic aberration of the projection screen and the wall surface, quickly realizes automatic screen calibration, and meanwhile can realize the complete fusion of the projection screen and the wall surface and improve the overall visual effect.

In an exemplary embodiment of the present disclosure, the infrared coating may be disposed directly on the edge of the front surface of the curtain 1 to mark the outer contour of the curtain 1. That is, the infrared coating layer may be directly applied to the outer edge of the curtain 1 and manufactured and used together when the curtain 1 is processed.

Further, in this embodiment, the curtain 1 may be tensioned and then directly provided with the infrared coating layer in the circumferential direction of the curtain 1, specifically, as shown in fig. 5 to 7, the projection screen provided by the present disclosure further includes a tensioning assembly 2 disposed on the back side of the curtain 1, the edge of the curtain 1 is provided with a sleeve 10 and a support 11 penetrating the sleeve 10, the tensioning assembly 2 includes an outer frame 21 and a fixing member 22 connected to the outer frame 21, wherein the fixing member 22 has an opening to fix the sleeve 10 when the edge of the curtain 1 is bent to the back side. Therefore, the position information of the outer contour is acquired under the condition that the curtain 1 is tensioned, the acquisition is relatively easier, and the accuracy of acquiring the position information can be ensured.

In another exemplary embodiment of the present disclosure, the projection screen further includes a fixed frame 4 disposed around the curtain 1, the infrared coating may be disposed at an edge of a front surface of the fixed frame 4, the fixed frame 4 forms an outer contour of the curtain 1 by surrounding a circle, and the infrared coating is disposed on the front surface of the fixed frame 4, which can also achieve the purpose of the present disclosure.

In this embodiment, the fixed frame 4 may be made of a transparent material, and is transparent in daily life, so as to achieve the effect of an invisible frame, and under the cooperation of the infrared camera 91 and the infrared light source 92, the position of the transparent fixed frame 4 can be obtained, thereby realizing the screen calibration. In other embodiments, the color of the fixed frame 4 can be the same as the color of the wall surface on which the projection screen is to be installed, and the color of the wall surface is matched by customizing the fixed frame 4 with the corresponding color, so that the fusion degree of the projection screen on the installation wall surface is increased, seamless connection between the projection picture and the wall surface is achieved, and the overall projection effect is improved. In addition, the present disclosure also includes an embodiment in which the infrared coating is directly disposed on the upper and lower edges of the curtain 1, the fixed frames 4 are disposed on the left and right edges, and the infrared coating is disposed on the fixed frames 4, and any similar modified embodiments thereof are within the protection scope of the present disclosure.

Further, in this embodiment, as shown in fig. 8 to 10, the projection screen further includes a tensioning assembly 2 disposed on the back of the curtain 1, a sleeve 10 and a support 11 penetrating the sleeve 10 are disposed on the edge of the curtain 1, the tensioning assembly 2 includes an outer frame 21 and a fixing member 22 connected to the outer frame 21, wherein the fixing member 22 has an opening to fix the sleeve 10 when the edge of the curtain 1 is bent to the back, the fixing frame 4 is fixed on the outer frame 21 and the curtain 1, and an infrared coating is disposed on a connecting section clamped with the front of the curtain 1. Like this, after tensioning assembly 2 tensioning curtain 1, with fixed frame 4 card on curtain 1 and outer frame 21, play the effect of further fixed curtain 1, through the positional information who obtains fixed frame 4, carry out the calibration to the screen simultaneously.

The curtain 1 and the outer frame 21 may be respectively constructed in a square structure, and fixed frames 4 are respectively fixed to four sides of the square structure. In other embodiments, several sides of the infrared-absorbing material can be fixed by the fixing frame 4, and the infrared coating layer can be directly disposed on the other sides, which are within the protection scope of the present disclosure.

In order to mount the fixing frame 4 on the outer frame 21, in the present embodiment, as shown in fig. 10, the fixing frame 4 may be configured as a U-shaped structure including a first connection section that is engaged with the curtain 1 at the front, a second connection section that is engaged with the curtain 1 at the back, and a side engagement section, wherein the length of the first connection section is greater than that of the second connection section, and the length of the second connection section is appropriately reduced on the premise of ensuring that the fixing frame 4 is stably fixed on the outer frame 21, which further facilitates the detachment of the fixing frame 4. The length of side joint section can carry out corresponding design according to outer frame 21 and twice curtain 1's thickness sum, guarantees that fixed frame 4 can enough stably be fixed, avoids producing wearing and tearing to curtain 1 simultaneously.

As shown in fig. 9, the projection screen provided by the present disclosure further includes a corner frame 5 fixed at the joint of adjacent fixed frames 4, the front of the corner frame 5 is provided with an infrared coating, in order to ensure that the adjacent two sides of the curtain 1 can be folded back and forth normally, the curtain 1 and the fixed frame 4 should be disconnected at the corner, the corner frame 5 is added, and meanwhile, the infrared coating is also provided on the front of the corner frame 5, so that a circle of closed outer contour can be formed, and the position of the outer contour can be obtained more accurately and completely.

As shown in fig. 11, the outer frame 21 includes a frame body 211 and an inner sidewall 212 for mounting the fixing member 22, the fixing member 22 may be connected to the inner sidewall 212 by a plurality of fastening members 23 arranged at intervals, and a connecting member 6 is disposed between adjacent fixing members 22 at a corner of the inner sidewall 212, as shown in fig. 9, the connecting member 6 may be used to support the sleeve 10. Frame body 211 can play support, taut effect when curtain 1 is buckled to the back, and mounting 22 can be C shape structure, can play the fixed action to sleeve pipe 10, and the tensioning of curtain 1 is realized in the three mutually supports.

According to the second aspect of the present disclosure, there is also provided a projection device, which includes the projector 8 and the projection screen described above, and the projection device has all the advantages of the projection screen described above, which are not described herein again. In addition, the projector can be an ultra-short-focus projector, a sufficiently large picture can be projected at a short distance, and the projector 8 is directly placed at a position close to the curtain 1 or the wall, so that the projection space can be remarkably saved. In other embodiments, the projector 8 may also be a tele projector, a mid-tele projector, etc., all falling within the scope of the present disclosure.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. Projection screen with a curtain (1) for displaying images, characterized in that the projection screen comprises an infrared coating, which is arranged circumferentially at the edge of the front side of the projection screen for marking the outer contour of the projection screen.

2. A projection screen according to claim 1, characterized in that the ir coating is provided at the edge of the front side of the curtain (1).

3. The projection screen of claim 2, further comprising a tensioning assembly (2) disposed at the back of the curtain (1), wherein the edge of the curtain (1) is provided with a sleeve (10) and a support (11) penetrating the sleeve (10), and wherein the tensioning assembly (2) comprises an outer frame (21) and a fixing member (22) connected to the outer frame (21), wherein the fixing member (22) has an opening to fix the sleeve (10) when the edge of the curtain (1) is bent back.

4. A projection screen according to claim 1, further comprising a fixed bezel (4) disposed around the curtain (1), the ir coating being disposed at the edge of the front face of the fixed bezel (4).

5. The projection screen of claim 4, wherein the projection screen further comprises a tensioning assembly (2) arranged at the back of the curtain (1), the edge of the curtain (1) is provided with a sleeve (10) and a support (11) arranged in the sleeve (10) in a penetrating manner, the tensioning assembly (2) comprises an outer frame (21) and a fixing member (22) connected with the outer frame (21), wherein the fixing member (22) is provided with an opening so that the edge of the curtain (1) is fixed to the sleeve (10) when being bent to the back, the fixing frame (4) is fixed to the outer frame (21) and the curtain (1), the fixing frame (4) is made of transparent materials, and the infrared coating is arranged on the connecting section of the front surface of the curtain (1) in a clamping manner.

6. A projection screen according to claim 5, characterised in that the curtain (1) and the outer frame (21) are each constructed as a square structure, to each of whose four sides the fixed frame (4) is fixed.

7. The projection screen of claim 5, wherein the fixed frame (4) is configured as a U-shaped structure comprising a first connecting section that is clamped to the curtain (1) at the front, a second connecting section that is clamped to the curtain (1) at the back, and a side clamping section, wherein the first connecting section has a length greater than the second connecting section.

8. A projection screen according to claim 5, further comprising a corner frame (5) fixed at the junction of adjacent fixed frames (4), the front face of the corner frame (5) being provided with the infrared coating.

9. A projection screen according to claim 5, wherein the outer frame (21) comprises a frame body (211) and inner side walls (212) for mounting the fixing members (22), wherein connecting members (6) are provided between adjacent fixing members (22) at corners of the inner side walls (212), and the connecting members (6) are used for supporting the sleeves (10).

10. A projection device comprising a projector and a projection screen according to any one of claims 1-9.