High-brightness metal screen device for 3D

Abstract

The present invention relates to a high-brightness metal screen device for a 3D-capable projector, which has optical properties that cause the image light incident from the projector to be scattered and reflected at a predetermined angle only toward the viewable area in front. The device includes a reflective panel section formed into a panel shape using a metal material with optical properties of a scattering reflection function, the front surface of which forms a spherical surface that is concave toward the rear, and the rear surface of which forms a spherical surface that is convex toward the rear, and a plurality of metal crystal uneven sections that protrude from the front of the reflective panel section, have a predetermined surface roughness (Ra), and scatter and reflect the light irradiated from the projector toward the viewable area at a predetermined angle.

Description

[Technical Field]

[0001] The present invention relates to a high brightness metal screen device for 3D, and more particularly to a high brightness metal screen device for 3D that can concentrate the light of an image emitted from a projector in a viewable area. [Background technology]

[0002] Generally, a projector is provided with a screen onto which an image is projected so that the image can be viewed, and the image projected from the projector is scattered and reflected by the screen and transmitted to a viewer.

[0003] Such projector screens require appropriate adjustment of materials and reflectivity in order to display the image projected by the projector more clearly and brightly. The image projected by the projector is diffused by the screen and spread over a wide area to the viewer, allowing them to view the image from various angles.

[0004] However, conventional projector screens have a structure in which the projector is installed at half the radius R and the light from the image is reflected parallel, so a viewing angle cannot be formed in the left and right directions, the viewing area is narrow, and the structure is complex because multiple projectors are used, making it impossible to view the image from close range and only possible to view the image from a long distance.

[0005] Prior documents related to the present invention include Korean Patent Publication No. 10-2003-0017088 (March 3, 2003), which discloses a wide-view, high-brightness imaging system. Summary of the Invention [Problem to be solved by the invention]

[0006] The object of the present invention is to provide a high-brightness metal screen device for 3D that can concentrate the light of the image emitted from the projector in the viewable area and realize a bright, high-brightness screen with little power consumption. [Means for solving the problem]

[0007] The high-brightness metal screen device for 3D according to the present invention is a high-brightness metal screen device for 3D that scatters and reflects image light incident from a projector only toward the viewable area in front at a set angle, and includes a reflective panel unit that is formed into a panel shape using a metal material that has optical properties of diffuse reflection, and whose front surface is a spherical surface that is concave toward the rear and whose rear surface is a spherical surface that is convex toward the rear, and a plurality of metal crystal uneven parts that protrude from the front of the reflective panel unit and have a predetermined surface roughness Ra, and that scatter and reflect light irradiated from the projector toward the viewable area at a predetermined angle, and the reflective panel unit is characterized in that the viewing distance, vertical width, horizontal width, and brightness of the viewable area can be adjusted by adjusting the surface roughness Ra of the metal crystal uneven parts.

[0008] In addition, the projector can be placed at a point with a radius of curvature R formed by the front surface of the reflective panel unit, and the reflective panel unit can change the viewing distance, vertical width, horizontal width, and brightness of the viewable area by adjusting the radius of curvature R.

[0009] The light source may further include an adjustment unit connected to a rear surface of the reflective panel unit for varying the front-rear direction position and the scattering reflection angle of the reflective panel unit.

[0010] The adjustment unit may further include: a first horizontal support base fixed to a structure and having an internal first guide groove, the first guide groove having a length in the front-rear direction, and the internal first guide groove being open to the front; a second horizontal support base having a rear end slidably inserted into the first guide groove and a front end protruding forward of the first horizontal support base; a hinge unit provided at the front end of the second horizontal support base, forming a horizontal rotation center in the left-right direction, and rotatably connected to the rear surface of the reflective panel unit; a length adjustment screw rotatable about the horizontal rotation center formed in the front-rear direction of the first guide groove, the front end of which is screw-connected to the rear end of the second horizontal support base; a length adjustment motor connected to the first horizontal support base, the drive shaft protruding from one side of which is mechanically connected to the rear end of the length adjustment screw to transmit a rotational force; an angle adjustment motor connected to one side of the hinge base, the drive shaft protruding from one side of which transmits a rotational force to the horizontal rotation center of the hinge unit; and a controller for controlling operation of the length adjustment motor and the angle adjustment motor. [Effects of the Invention]

[0011] TIFF2026503818000002.tif102163 [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view showing a high brightness metal screen device for 3D according to the present invention. [Figure 2] 1 is a side cross-sectional view showing a high brightness metal screen device for 3D use according to the present invention. [Figure 3] 1 is a cross-sectional plan view showing a high brightness metal screen device for 3D use according to the present invention. [Figure 4] 3A to 3D high brightness metal screen device according to the present invention, a side cross-sectional view showing the process of projector light being reflected and diffused. [Figure 5] 1 is a perspective view showing how the position of the viewable area changes by adjusting the surface roughness in a high brightness metal screen device for 3D according to the present invention. FIG. [Figure 6]1 is a cross-sectional plan view showing how the diffusion angle changes by adjusting the surface roughness in a high-brightness metal screen device for 3D according to the present invention. FIG. [Figure 7] 1 is a side cross-sectional view showing an adjustment unit of a high brightness metal screen device for 3D use according to the present invention. [Figure 8] 5A to 5C are side cross-sectional views showing a process of adjusting the angle of the reflective panel unit in the high brightness metal screen device for 3D according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The advantages and features of the present invention, as well as the method for achieving the same, will become clearer with reference to the following examples in conjunction with the accompanying drawings. However, the present invention is not limited to the examples disclosed below, and can be implemented in various forms. The examples are provided merely to complete the disclosure of the present invention and to allow those skilled in the art to clearly understand the scope of the invention. The present invention is defined only by the claims. Furthermore, when describing the present invention, if it is determined that related well-known technologies may obscure the gist of the present invention, detailed descriptions thereof will be omitted.

[0014] FIG. 1 is a perspective view showing a high-brightness metal screen device for 3D according to the present invention, FIG. 2 is a side cross-sectional view showing a high-brightness metal screen device for 3D according to the present invention, FIG. 3 is a plan cross-sectional view showing a high-brightness metal screen device for 3D according to the present invention, and FIG. 4 is a side cross-sectional view showing the process in which projector light is reflected and diffused in the high-brightness metal screen device for 3D according to the present invention. FIG. 5 is a perspective view showing how the position of the viewable area changes by adjusting the surface roughness in a high-brightness metal screen device for 3D according to the present invention. FIG. 6 is a plan cross-sectional view showing how the diffusion angle changes by adjusting the surface roughness in a high-brightness metal screen device for 3D according to the present invention. FIG. 7 is a side cross-sectional view showing an adjustment unit in a high-brightness metal screen device for 3D according to the present invention. FIG. 8 is a side cross-sectional view showing the process of adjusting the angle of the reflective panel unit in a high-brightness metal screen device for 3D according to the present invention.

[0015] Referring to Figures 1 and 2, the high-brightness metal screen device for 3D according to the present invention is a high-brightness metal screen device for 3D that scatters and reflects the light L of the image incident from the projector 10 to the viewable area A in front, and includes a reflective panel unit 100 and a number of metal crystal concave and convex units 200.

[0016] The reflective panel unit 100 is intended to scatter and reflect the light L of the image incident from the projector 10 to the viewable area A in front of it. It is installed vertically with its front surface facing the viewable area. It can be manufactured in the form of a thin metal plate using a metal material such as aluminum (Al), gold (Au), silver (Ag), or copper (Cu) having a face-centered cubic lattice (Fcc) crystal structure so that the metal crystal uneven portion 200 described later is formed on the front surface, and can have a rectangular panel shape with four sides formed along the periphery.

[0017] Here, the reflective panel unit 100 may have a concave spherical surface at the rear and a convex spherical surface at the rear, and the screen size (e.g., 150 to 500 inches) and thickness in the front-to-rear direction (e.g., 10 to 15 μm) of the reflective panel unit 100 may be variously adapted as required.

[0018] The viewable area A refers to the area where light L scattered at a predetermined angle (e.g., 15 to 40 degrees) while being scattered and reflected by the front surface of the reflective panel unit 100 intersects. When a viewer looks at the front surface of the reflective panel unit 100 within the viewable area A, the scattered and reflected light L of the image can be concentrated in the direction of the user's line of sight.

[0019] In addition, the projector 10 can be placed at a point with a radius of curvature R formed by the front surface of the reflective panel unit 100, and by adjusting the radius of curvature R of the reflective panel unit 100, the viewing distance, vertical width, horizontal width, and brightness of the viewable area can be changed.

[0020] The optical structure of such a reflective panel unit 100 must uniformly scatter and reflect all image light from 8 million pixels (3840 x 2160) based on the 4K standard, i.e., 8 million x 3 = 24 million sub-pixels (R, G, B), to the viewable area A. As shown in Figure 4, in order to send the image light from the projector 10 to the viewable area, the scattering axes of the scattered reflection must be concentrated at the shortest possible distance.

[0021] As shown in Figures 2 and 3, when the image light of L1, L2, and L3 is scattered and reflected toward the viewable area A, an area where L1, L2, and L3 overlap is formed, and all pixels of L1, L2, and L3 are visible in the viewable area A where L1, L2, and L3 overlap.

[0022] For example, with a typical screen (gain 1-2), in indoor and daytime conditions with 500 lux or more, the brightness of the image reflected from the projector 10 is similar to the brightness of the light source diffused by the reflective panel unit 100 due to the ambient light, resulting in a significant decrease in contrast and saturation of the reflected image, significantly degrading image quality. The ambient light diffused by the reflective panel unit 100 must be prevented from being reflected into the viewable area A of the viewer. In other words, optimal image quality can be provided by increasing the HSB (hue-saturation-brightness) and contrast ratio.

[0023] Furthermore, the high brightness 3D metal screen device of the present invention utilizes the optical properties of face-centered cubic (Fcc) crystals, which have a dispersive scattering effect, to diffusely reflect the image light from the projector 10 only in the viewable area of ​​the viewer, and does not send light to areas other than the viewable area, thereby improving the utilization efficiency of the image light by 20 to 30 times.

[0024] The metal crystal uneven portion 200 diffuses and reflects the light L emitted from the projector 10 and diffuses it at a predetermined angle (e.g., 15 to 25 degrees) toward the viewable area A. It is formed over the entire area of ​​the reflective panel unit 100, protrudes from the front surface of the reflective panel unit 100, and has a predetermined surface roughness Ra. Here, the protruding end of the metal crystal uneven portion 200 can have a predetermined curvature, and by adjusting the curvature of the metal crystal uneven portion 200, the minimum viewable distance and the brightness of the screen can be adjusted, and by adjusting the surface roughness Ra of the metal crystal uneven portion 200, the dispersion / scattering angle can be adjusted, thereby adjusting the width of the viewable area and the brightness of the screen.

[0025] Here, the metal crystal uneven portion 200 can be formed on the front surface of the reflective panel portion 100 by a rolling method, and the metal crystal uneven portion 200 can be formed on the front surface of the reflective panel portion 100 by rolling the reflective panel portion 100 in the front-to-back direction using rollers of a rolling device (not shown).

[0026] In addition, the surface roughness Ra of the metal crystal uneven portion 200 can be variably adjusted by adjusting the speed at which the reflective panel unit 100 is moved while being rolled, the diameter of the roller, the rotation speed of the roller, the pressure, etc., and by adjusting the surface roughness of the metal crystal uneven portion 200, the angle at which light L is scattered and reflected can be variably adjusted. That is, by adjusting the surface roughness Ra of the metal crystal uneven portion 200, the scattered reflection angle can be changed, and the minimum viewing distance of the viewable area A, the vertical and horizontal widths of the viewable area A, and the brightness of the light scattered and reflected into the viewable area can be adjusted. In this case, the angle and brightness of light scattered in the direction opposite the viewable area are inversely proportional to the square.

[0027] For example, as shown in Figures 5 and 6, the viewing distance can be adjusted by adjusting the surface roughness Ra of the metal crystal uneven portion 200; the greater the surface roughness Ra of the metal crystal uneven portion 200, the closer the viewing distance is from the metal crystal uneven portion 200. That is, as shown in Figures 2 and 3, the area where the image light L overlaps becomes the viewable area A, and the minimum viewable distance of the viewable area A can be adjusted according to the surface roughness Ra of the metal crystal uneven portion 200. In this case, the image light is concentrated in the viewable area A, improving brightness by more than 20 times.

[0028] Furthermore, as shown in Figure 6, when the scattering angle is 50 degrees, the brightness of the screen drops significantly, making it unsuitable for bright environments (500 lux or more), when the scattering angle is 25 to 30 degrees, it is possible to view in bright places (500 lux or more) or outdoors, and when the scattering angle is less than 10 degrees, it is suitable for viewing an ultra-large screen (e.g., 2000 inches) at a distance of 50 m or more, but is unsuitable for indoor use. In other words, when the scattering angle is 25 to 30 degrees, it has an extremely excellent effect as a high-brightness image in a 3D environment.

[0029] The reflective screen for a projector according to an embodiment of the present invention may further include an adjustment unit 300 connected to the rear surface of the reflective panel unit 100 to change the front-rear position and scattering reflection angle of the reflective panel unit 100.

[0030] The adjustment unit 300 includes a first horizontal support base 310 that is fixed to a structure and has a first guide groove 311 that is open forward and has a length in the front-rear direction; a second horizontal support base 320 that has a rear end slidably inserted into the first guide groove 311 and a front end that protrudes forward from the first horizontal support base 310; a hinge unit 330 that is provided at the front end of the second horizontal support base 320, forms a horizontal rotation center in the left-right direction, and is rotatably connected to the rear surface of the reflective panel unit 100; The apparatus may further include a length adjustment screw 340, the end of which is threadably coupled to the rear end of the second horizontal support base 320; a length adjustment motor 350, which is coupled to the first horizontal support base 310 and has a drive shaft protruding from one side that is mechanically connected to the rear end of the length adjustment screw 340 to transmit a rotational force; an angle adjustment motor 360, which is coupled to one side of the hinge unit 330 and has a drive shaft protruding from one side that transmits a rotational force to the horizontal rotation center of the hinge unit 330; and a control unit 370 that controls the operation of the length adjustment motor 350 and the angle adjustment motor 360.

[0031] The rear end of the second horizontal support 320 is inserted into the first guide groove 311 so as to be slidable forward and backward, and a corresponding fastening groove is formed in a concave shape at the rear end of the second horizontal support 320 so that the front end of the length adjustment screw 340 can be inserted therein, and the fastening groove may have a length in the forward and backward direction. Here, the length adjustment screw 340 has corresponding threads formed on the outer peripheral surface and the inner peripheral surface of the fastening groove, and the threads formed on the outer peripheral surface of the length adjustment screw 340 may spiral in the rotation direction and be continuously formed along the axial direction. In addition, the rear end of the length adjustment screw 340 may be rotatably coupled to the rear end of the first guide groove 311.

[0032] In addition, the rear end of the length adjustment screw 340 may be inserted into the rear of the first horizontal support 310, and the front end of the length adjustment motor 350 may be coupled to the rear end of the first horizontal support 310. The drive shaft protruding forward of the length adjustment motor 350 may be mechanically connected to the rear end of the length adjustment screw 340 to transmit rotational force.

[0033] For example, when the length adjusting screw 340 is rotated in a forward direction, the second horizontal support 320 moves forward, when the length adjusting screw 340 is rotated in a reverse direction, the second horizontal support 320 moves backward, and when the rotation of the length adjusting screw 340 is stopped, the second horizontal support 320 is fixed at the adjusted position. In other words, since the second horizontal support 320 and the reflective panel 100 move together, the user can position the reflective panel 100 at a desired position.

[0034] The hinge unit 330 may include a first hinge 331 protruding from the front end of the second horizontal support base 320, a second hinge 332 closely attached to one axial side of the first hinge 331 while crossing the first hinge 331 and having its front end connected to the rear surface of the reflective panel unit 100, and a rotation axis forming the horizontal rotation center of the first hinge 331 and the second hinge 332.

[0035] The angle adjustment motor 360 may have a front end coupled to one axial side of the first hinge 331 opposite the second hinge 332, and its driving may be controlled by the control unit 370. The driving shaft of the angle adjustment motor 360 may pass axially through the first hinge 331 and be mechanically connected to one axial side of the rotation shaft.

[0036] For example, when the drive shaft of the angle adjustment motor 360 is rotated in the forward direction, the reflective panel unit 100 can be rotated forward (within 30 degrees), and when the drive shaft of the angle adjustment motor 360 is rotated in the reverse direction, the reflective panel unit 100 can be rotated backward, and when the rotation of the drive shaft is stopped, the reflective panel unit 100 can be positioned at the adjusted angle.

[0037] In other words, the angle at which the front of the reflective panel unit 100 faces can be variably adjusted, and the projector 10 can be positioned at various angles above, below, left, and right in front of the reflective panel unit 100, and image light can be sent from the front of the reflective panel unit 100 in the direction in which the user is positioned.

[0038] As a result, with conventional screens, it was impossible to view images in bright areas or outdoors due to the ambient light (particularly side light) reflected off the screen itself.However, by sending the side light to the side parts (non-viewing positions) rather than the viewer (front), the present invention increases brightness (luminance) and improves contrast, making it possible to view images even in brightly lit environments or bright outdoor environments.

[0039] In addition, the present invention uses a technology in which light projected from the metallic reflective panel unit 100 is dispersed and reflected only in the viewer's direction in the viewable area A, without sending image light to the sides, ceiling, or floor, i.e., areas that are not being viewed. This allows viewers to see 20 to 30 times brighter and more contrasty images, and reduces energy consumption to one-twentieth of the original level.

[0040] TIFF2026503818000003.tif120163

[0041] Furthermore, by satisfying all the requirements of high brightness, ultra-large size (e.g., 150-200 inches) and high-definition images (e.g., 4K, 8K), the virtual space in the environment mediated through the screen can be perceived as real, creating a strong cognitive illusion that is identified with reality, which allows the message of realistic and impressive content to be remembered and conveyed. The objective of this invention is to manufacture a screen that meets all these requirements at low cost and with energy efficiency, and the scattering and reflection function of the metallic surface can realize high brightness passive 3D.

[0042] While specific embodiments of the high brightness metal screen device for 3D use according to the present invention have been described above, it is obvious that various modifications are possible without departing from the scope of the present invention.

[0043] Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the following claims, as well as their equivalents. In other words, it should be understood that the above-described embodiments are illustrative in all respects and not limiting, and the scope of the present invention is defined not by the detailed description but by the claims set forth below, and all changes and modifications derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention.

[0044] Embodiment The embodiments of the present invention have been described in conjunction with the best mode for the invention above. [Industrial Applicability]

[0045] The present invention has industrial applicability because it can concentrate the light of an image projected from a projector onto a viewable area and realize a bright screen with high luminance with low power consumption.

Claims

1. A high-brightness metal screen device for 3D that scatters and reflects image light incident from a projector only to a viewable area in front at a predetermined angle, A reflective panel portion formed into a panel shape using a metal material having optical properties of diffuse reflection, the front surface of which forms a spherical surface concave toward the rear and the rear surface of which forms a spherical surface convex toward the rear; and a plurality of metal crystal concave-convex portions that protrude from the front surface of the reflective panel portion, have a predetermined surface roughness (Ra), and scatter and reflect the light emitted from the projector toward the set viewable area at a predetermined angle; Including, The reflective panel portion is characterized in that the viewing distance, vertical width, horizontal width, and brightness of the viewable area are adjusted by adjusting the surface roughness (Ra) of the metal crystal uneven portion.

2. The projector includes: The reflecting panel is positioned at a point of a radius of curvature (R) formed by the front surface of the reflecting panel, The reflective panel portion is 2. The reflective screen for a projector according to claim 1, wherein the viewing distance, vertical width, horizontal width and brightness of the viewable area are changed by adjusting the radius of curvature (R).

3. 2. The reflective screen for a projector according to claim 1, further comprising an adjustment unit connected to a rear surface of the reflective panel unit for adjusting a position of the reflective panel unit in the front-rear direction and a reflection angle.

4. The adjustment unit a first horizontal support base fixed to the structure, the first horizontal support base having a length in the front-rear direction and an internal first guide groove that is open forward; a second horizontal support base having a rear end slidably inserted into the first guide groove and a front end protruding forward of the first horizontal support base; a hinge portion provided at a front end of the second horizontal support base, forming a horizontal rotation center in the left-right direction, and rotatably connected to a rear surface of the reflective panel portion; a length adjusting screw rotatable about a horizontal rotation center formed along the front-rear direction of the first guide groove, the front end of which is screw-coupled to the rear end of the second horizontal support; a length adjustment motor coupled to the first horizontal support, with a drive shaft protruding from one side mechanically connected to a rear end of the length adjustment screw to transmit a rotational force; an angle adjustment motor coupled to one side of the hinge unit, the drive shaft protruding from one side of the angle adjustment motor transmitting a rotational force to the horizontal rotation center of the hinge unit; and a control unit that controls the driving of the length adjustment motor and the angle adjustment motor; 4. The reflective screen for a projector according to claim 3, further comprising:

Images