High-brightness metal screen device for 3D

Abstract

The present invention relates to a high-brightness metal screen device for a projector having a 3D function, having an optical property of scattering and reflecting only image light incident from the projector to a front visible region at a set angle, the high-brightness metal screen device for 3D comprising: a reflective panel part for reflecting the image light incident from the projector to the front visible region; a lens which is formed in a panel shape using a metal material having optical characteristics of scattering and reflecting functions, the front surface of which has a spherical surface that is concave rearward, and the rear surface of which has a spherical surface that is convex rearward; and a plurality of metal crystal concavo-convex parts protruding from the front surface of the reflective panel part, having a set surface roughness (Ra), and scattering and reflecting light irradiated from the projector to the set viewing region at a set 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 capable of focusing light of an image irradiated from a projector into a viewing area. Background Art

[0002] Generally, a projector has a screen provided for projecting an image in order to view the projected image, and the image projected from the projector is diffusely reflected by the screen and transmitted to a viewer.

[0003] This type of projector screen needs to have its material or reflectivity adjusted appropriately to make the image projected from the projector appear clearer and brighter. The image projected from the projector will be diffusely reflected by the screen and spread over a large area to the audience, allowing the audience to watch the video from multiple angles.

[0004] However, the existing projector screen is set at the R position 2 minutes from the projector position and has a structure that reflects image light in parallel, so it is impossible to form a viewing angle in the left and right directions, resulting in a narrow viewing area, and multiple projectors are used, so the structure is complicated and cannot be viewed at a close distance, so the image can only be viewed at a distance.

[0005] Prior art documents related to the present invention include Korean Patent Publication No. 10-2003-0017088 (March 3, 2003), and a wide-field-of-view high-brightness imaging system is disclosed in the above prior art document. Summary of the Invention

[0006] Technical problems to be solved

[0007] The present invention has been proposed in view of the above-mentioned problems, and its object is to provide a high-brightness metal screen device for 3D that can concentrate the light of an image emitted by a projector into a visible area and can realize a bright screen with high brightness at low power consumption.

[0008] Technical Solution

[0009] In order to achieve the above-mentioned purpose, the reflective screen for a projector of the present invention is a high-brightness metal screen device for 3D that only scatters and reflects the image light incident from the projector to a visible area in front at a set angle, and is characterized in that it includes: a reflective panel portion, which is formed into a panel shape using a metal material with scattering and reflecting optical properties, and a spherical surface is formed in the front that is concave toward the rear and a spherical surface is formed in the back that is convex toward the rear; and a plurality of metal crystal concave and convex portions, which protrude from the front of the reflective panel portion and have a set surface roughness (Ra), and scatter and reflect the light irradiated from the projector to the set visible area at a set angle, and the reflective panel portion adjusts the viewing distance of the visible area, the upper and lower widths, the left and right widths and the brightness of the visible area by adjusting the surface roughness (Ra) of the metal crystal concave and convex portions.

[0010] In addition, the projector is located at the curvature radius (R) point in front of the reflective panel portion, and the reflective panel portion changes the visible distance of the visible area and the upper and lower widths, left and right widths and brightness of the visible area by adjusting the curvature radius (R).

[0011] In addition, an adjustment portion is included, which is connected to the rear side of the reflection panel portion and is used to change the front-to-back position and reflection angle of the reflection panel portion.

[0012] In addition, the adjustment part includes: a first horizontal support member, which is used to be fixed on the structure and has an internal first guide groove with a front-to-back length and opens forward; a second horizontal support member, whose rear end can be slidably inserted into the first guide groove, and the front end protrudes from the front of the first horizontal support member; a hinge part, which is arranged on the front end of the second horizontal support member, forms a horizontal rotation center in the left and right directions, and is rotatably connected to the back of the reflective panel part; a length adjustment screw, which rotates relative to the horizontal rotation center formed along the front-to-back direction of the first guide groove, and the front end is connected to the rear end of the second horizontal support member by a screw connection; a length adjustment motor, which is connected to the first horizontal support member, and a drive shaft protruding to one side is mechanically connected to the rear end of the length adjustment screw to transmit the rotational force; an angle adjustment motor, which is connected to one side of the hinge part, and the drive shaft protruding to one side transmits the rotational force to the horizontal rotation center of the hinge part; and a control part, which is used to control the drive of the length adjustment motor and the angle adjustment motor.

[0013] Beneficial effects

[0014] The present invention utilizes 1.5x10 4 / mm 2The scattering and reflective properties of the individual metal crystals cause ambient light from the right side to be directed to the left, and ambient light from the ceiling to be directed to the floor. This minimizes ambient light to the visible area by directing only the projector's image light. Instead of being directed to the top, bottom, left, or right (non-visible areas), the projector's image light is scattered and reflected only within the visible area, increasing brightness by 10 to 20 times. Therefore, even without a high-brightness projector, a large (150 to 300-inch) screen with a brightness of over 1000 nits can be viewed during the day. Furthermore, the use of a metal reflective panel enables passive 3D. This results in a large (150 to 300-inch) screen with high brightness (over 1000 nits), passive 3D, low power consumption, and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view showing a high brightness metal screen device for 3D according to the present invention.

[0016] Figure 2 is a side view showing a high brightness metal screen device for 3D according to the present invention.

[0017] Figure 3 is a plan view showing a high brightness metal screen device for 3D according to the present invention.

[0018] Figure 4 is a side sectional view illustrating a process of light diffusion of a reflective projector in a high brightness metal screen device for 3D according to the present invention.

[0019] Figure 5 is a perspective view showing a state in which the position of a visible area is changed by adjusting the surface roughness in the high brightness metal screen device for 3D according to the present invention.

[0020] Figure 6 is a plan cross-sectional view illustrating a state in which a diffusion angle is changed by adjusting surface roughness in a high brightness metal screen device for 3D according to the present invention.

[0021] Figure 7 is a side view illustrating an adjusting portion of a high brightness metal screen device for 3D according to the present invention.

[0022] Figure 8 is a side view illustrating a process of adjusting an angle of a reflective panel part in the high brightness metal screen device for 3D according to the present invention. DETAILED DESCRIPTION

[0023] Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

[0024] The advantages and features of the present invention and methods of achieving them will become clear by referring to the embodiments described below in detail with reference to the accompanying drawings.

[0025] However, the present invention is not limited to the embodiments disclosed below, but may be embodied in a variety of different forms, and these embodiments are provided only to complete the disclosure of the present invention and to fully inform those skilled in the art of the present invention of the scope of the present invention, and the present invention is defined solely by the scope of the claims. In addition, when it is determined that the relevant disclosed technology may obscure the main points of the present invention when explaining the present invention, its detailed description will be omitted.

[0026] Figure 1 is a perspective view showing a high brightness metal screen device for 3D according to the present invention, Figure 2 is a side view showing a high brightness metal screen device for 3D according to the present invention, Figure 3 is a plan view showing a high brightness metal screen device for 3D according to the present invention, Figure 4 is a side sectional view illustrating a process of light diffusion of a reflective projector in a high brightness metal screen device for 3D according to the present invention.

[0027] Figure 5 is a perspective view showing a state in which the position of a visible area is changed by adjusting the surface roughness in a high brightness metal screen device for 3D according to the present invention, Figure 6 is a plan cross-sectional view showing a state in which a diffusion angle is changed by adjusting surface roughness in a high brightness metal screen device for 3D according to the present invention, Figure 7 is a side view showing an adjustment portion of a high brightness metal screen device for 3D according to the present invention, Figure 8 is a side view illustrating a process of adjusting an angle of a reflective panel part in the high brightness metal screen device for 3D according to the present invention.

[0028] refer to Figure 1 and Figure 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 visual area A in front, including a reflective panel portion 100 and a plurality of metal crystal concave-convex portions 200.

[0029] The reflective panel portion 100 is used to scatter and reflect the light L of the image incident from the projector 10 to the front visible area A, and can be installed vertically so that the front can face the visible area. In order to form the metal crystal convex-concave portion 200 described later on the front, a metal material with a face-centered cubic lattice (Fcc: face-centered cubic lattice) crystal structure such as aluminum (Al), gold (Au), silver (Ag) and copper (Cu) can be used to make a metal thin plate form, and can have a square panel shape with four sides formed along the edge.

[0030] At this time, the reflective panel portion 100 can form a spherical surface that is concave toward the rear, and the back side can form a spherical surface that is convex toward the rear, and the screen size (150 to 500 inches, etc.) and the thickness in the front-to-back direction (10 to 15 μm, etc.) of the reflective panel portion 100 can be applied in various ways as needed.

[0031] The visible area A refers to the area where light L scattered in front of the reflective panel unit 100 and diffused at a set angle (15 degrees to 40 degrees, etc.) intersects, and when the viewer looks in front of the reflective panel unit 100 within the visible area A, the light L of the scattered and reflected image can be concentrated in the direction of the user's line of sight.

[0032] In addition, the projector 10 can be located at a point of curvature radius R formed in front of the reflective panel portion 100 , and the viewing distance of the visible area and the vertical width, horizontal width and brightness of the visible area can be changed by adjusting the curvature radius R of the reflective panel portion 100 .

[0033] The optical structure of the reflective panel unit 100 is based on 4K's 8 million pixels (3840x2160), that is, all image light of 8 million x 3 = 24 million sub-pixels (RGB) must be evenly scattered and reflected to the viewing area A. Figure 4 As shown, in order to transmit the imaging light of the projector 10 to the visible area, the scattering axes of scattering and reflection must be concentrated at the smallest possible distance.

[0034] like Figure 2 and 3 As shown, when the imaging light from L1, L2, and L3 is scattered and reflected toward the visible area A, an overlapping area of ​​L1, L2, and L3 is formed, and in the overlapping visible area A of L1, L2, and L3, all pixels of L1, L2, and L3 are visible.

[0035] For example, under normal scanning (gain 1 to 2), in indoor and daytime conditions above 500 lux, the brightness of the reflected image at the projector 10 becomes similar to the brightness of the diffusely reflected light source at the reflective panel 100 caused by the ambient light source, and the contrast and saturation of the reflected image are significantly reduced, significantly degrading the image quality. The ambient light diffusely reflected from the reflective panel 100 must not be reflected into the viewer's visible area A. This means that the hue saturation (HSB) and contrast can be improved, thereby providing optimal image quality.

[0036] In addition, the high-brightness metal screen device for 3D according to the present invention utilizes the optical properties of the face-centered cubic lattice (Fcc) crystal with a dispersion scattering effect to scatter and reflect the image light of the projector 10 only to the viewer's visible area, and by not sending the light to areas outside the visible area, the utilization efficiency of the image light can be increased by 20 to 30 times.

[0037] The metal crystal convex-concave portion 200 is used to scatter and reflect light L emitted from the projector 10, diffusing it toward the visible area A at a set angle (e.g., 15 to 25 degrees). It is formed throughout the entire area of ​​the reflective panel 100, protrudes from the front of the reflective panel 100, and has a set surface roughness Ra. The protruding end of the metal crystal convex-concave portion 200 can have a set curvature. By adjusting the curvature of the metal crystal convex-concave portion 200, the minimum viewing distance and screen brightness can be adjusted. By adjusting the surface roughness Ra of the metal crystal convex-concave portion 200, the dispersion scattering angle can be adjusted to adjust the width of the visible area and screen brightness.

[0038] At this time, the metal crystal convex-concave portion 200 can be formed on the front face of the reflective panel 100 by a rolling method, and the rollers of a rolling device (not shown) can be used to roll in the front and rear directions of the reflective panel portion 100 to form the metal crystal convex-concave portion 200 on the front face of the reflective panel portion 100.

[0039] Furthermore, when the reflective panel 100 is rolled, the surface roughness Ra of the metal crystal concave-convex portion 200 can be adjusted to various degrees by adjusting the conveying speed, roller diameter, roller rotation speed, pressure, and the like. Furthermore, by adjusting the surface roughness Ra of the metal crystal concave-convex portion 200, the scattering and reflection angles of light L can be adjusted to various degrees. Specifically, by adjusting the surface roughness Ra of the metal crystal concave-convex portion 200 to change the scattering and reflection angles, the minimum viewing distance of the visible area A, the vertical and horizontal widths of the visible area A, and the brightness of light scattered and reflected from the visible area can be adjusted. In this case, the scattering angle and brightness opposite to the visible area are inversely proportional to the square.

[0040] For example, Figure 5 and Figure 6As shown, the visible distance can be adjusted by adjusting the surface roughness Ra of the metal crystal concave-convex portion 200, and as the surface roughness Ra of the metal crystal concave-convex portion 200 increases, the visible distance is closer to the metal crystal concave-convex portion 200. That is, as Figure 2 and Figure 3 As shown, the overlapping portion of the imaging light L becomes the visible area A, and the minimum visible distance of the visible area A can be adjusted according to the surface roughness Ra of the metal crystal concave-convex portion 200. At this time, the image light is concentrated in the visible area A, so the brightness is increased by more than 20 times.

[0041] In addition, if Figure 6 As shown, when the dispersion scattering angle is 50 degrees, the screen brightness decreases significantly, making it unsuitable for viewing in brightly lit areas (over 500 lux). When the dispersion scattering angle is 25 to 30 degrees, it is not suitable for viewing in bright areas (over 500 lux), but can be viewed outdoors. If the dispersion scattering angle is less than 10 degrees, it simulates viewing an ultra-large screen (e.g., 2000 inches) at a distance of more than 50 meters, but is not suitable for indoor use. In other words, when the dispersion scattering angle is 25 to 30 degrees, it is very effective as a high-brightness imaging in a 3D environment.

[0042] The reflective screen for a projector according to one embodiment of the present invention is connected to the rear of the reflective panel portion 100 and may further include an adjustment portion 300 for changing the front and rear positions and scattering and reflection angles of the reflective panel portion 100 .

[0043] The adjustment unit 300 includes: a first horizontal support member 310, fixed to the structure, and having a first guide slot 311 with a front-to-back length inside thereof, which is open forward; a second horizontal support member 320, the rear end of which is slidably inserted into the first guide slot 311, and the front end of which protrudes forward of the first horizontal support member 310; a hinge portion 320, which is provided at the front end of the second horizontal support member 320, forms a horizontal rotation center in the left-right direction, and is rotatably connected to the back surface of the reflective panel unit 100; a length adjustment screw 340, which can be adjusted relative to the front-to-back direction along the first guide slot 311. The horizontal rotation center formed rotates, and the front end is connected to the rear end of the second horizontal support member 320 by a screw connection; the length adjustment motor 350 is connected to the first horizontal support member 310, and the drive shaft protruding on one side is mechanically connected to the rear end of the length adjustment screw 340 to transmit torque; the angle adjustment motor 360 is connected to one side of the hinge part 330, and the drive shaft protruding toward one side transmits torque to the horizontal rotation center of the hinge part 330; and the control part 370 is used to control the drive of the length adjustment motor 350 and the angle adjustment motor 360.

[0044] The rear end of the second horizontal support member 320 is inserted into the first guide slot 311 so as to slide forward and backward. A corresponding fastening slot is recessed into the rear end of the second horizontal support member 320 for inserting the front end of the length adjustment screw 340. The fastening slot may have a length in the front-to-back direction. Corresponding threads are formed on the outer circumference of the length adjustment screw 340 and the inner circumference of the fastening slot. The threads formed on the outer circumference of the length adjustment screw 340 may be continuous in the axial direction and spiral in the rotational direction. The rear end of the length adjustment screw 340 is rotatably connected to the rear end of the first guide slot 311.

[0045] In addition, the rear end of the length adjustment screw 340 can pass through the rear portion of the first horizontal support member 310, the front end of the length adjustment motor 350 is connected to the rear end of the first horizontal support member 310, and the drive shaft protruding forward of the length adjustment motor 350 can be mechanically connected to the rear end of the length adjustment screw 340 to transmit rotational force.

[0046] For example, when the length adjustment screw 340 is rotated in the forward direction, the second horizontal support member 320 can be moved forward, and when the length adjustment screw 340 is rotated in the reverse direction, the second horizontal support member 320 can be moved backward. When the length adjustment screw 340 stops rotating, the second horizontal support member 320 can be fixed in the adjusted position. In other words, since the second horizontal support member 320 and the reflective panel unit 100 move together, the reflective panel unit 100 can be positioned at a user's desired position.

[0047] The hinge portion 330 may include a first hinge 331 protruding from the front end of the second horizontal support member 320, a second hinge 332 intersecting with one axial side of the first hinge 331 and having a front end connected to the rear of the reflective panel portion 100, and a rotation axis forming a horizontal rotation center of the first hinge 331 and the second hinge 332.

[0048] The front end of the angle adjustment motor 360 is connected to the axial side of the first hinge 331 opposite to the second hinge 332, and can be controlled and driven by the control unit 370, and the drive shaft of the angle adjustment motor 360 can pass through the first hinge 331 in the axial direction and be mechanically connected to the axial side of the rotating shaft.

[0049] For example, when the drive shaft of the angle adjustment motor 360 rotates forward, the reflective panel portion 100 can rotate forward (within 30 degrees), when the drive shaft of the angle adjustment motor 360 rotates reversely, the reflective panel portion 100 can rotate backward, and when the drive shaft stops rotating, the reflective panel portion 100 can be positioned at an adjusted angle.

[0050] That is, the angle of the front facing direction of the reflective panel unit 100 can be variably adjusted, so that the projector 10 can be positioned at various angles up, down, left, and right on the front side of the reflective panel unit 100, and image light can be sent from the front of the reflective panel unit 100 in the direction where the user is located.

[0051] As a result, in the present invention, the existing screen cannot be used to watch videos in brightly lit areas or outdoors because the screen itself is reflected by ambient light (especially side light), but by sending side light to the viewer side (front) rather than the side part of the viewer (non-viewing position), the video can be watched in a brightly lit environment and a bright outdoor environment by increasing the brightness and increasing the contrast.

[0052] In addition, in the present invention, the light projected onto the reflective panel portion 100 using a metal material does not send the image light to the side, ceiling or floor portion, i.e., the non-viewing portion. This technology only scatters and reflects in the direction of the viewer in the viewable visual area A, so that 20 to 30 times higher brightness and higher contrast images can be seen, and energy consumption can also be reduced to 1 / 20.

[0053] In addition, since the metal crystal structure of the reflective panel portion 100 has a surface roughness (Ra) of 1.5×10 4 / mm 2 Therefore, the light scattered from the metal crystal structure can be scattered by the Gaussian effect, and the unit pixel of the reflective panel part 100 at 150 inches and 4k (8 million pixels) is 8 million × 3 (RGB) = 2400, that is, 24 million unit pixels exist on the screen. The area of ​​one unit pixel is 0.12mm 2 degree, at 0.12mm 2 Containing over 1,000 metal crystals, these scattered and reflected light from each pixel is sent back to the viewing area at a specific angle. This allows for 4K high-definition viewing. The scattered and reflected light bounces off the metal surface, without changing the polarization of the incident light from the projector. Instead, it is sent directly to the viewing area, achieving passive 3D.

[0054] At the same time, high brightness, ultra-large size (e.g., 150-200 inches), and high-quality video (e.g., 4K, 8K) must all be met to ensure that, within a screen-mediated environment, people experience a near-real or equivalent cognitive illusion in a virtual space, a strong sense of reality, and the ability to retain and convey the most realistic and memorable content. The purpose of this invention is to manufacture a screen that meets all these requirements at low cost and with high energy efficiency, while also achieving high-brightness passive 3D through the scattering and reflection functions of metal surfaces.

[0055] So far, a specific embodiment of the high brightness metal screen device for 3D according to the present invention has been described, but it goes without saying that various modifications can be made to the embodiment without departing from the scope of the present invention.

[0056] Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the patent claims described later and the scope equivalent to the scope of these patent claims.

[0057] That is, the described embodiments are illustrative in all aspects and not restrictive, and the scope of the present invention is represented by the patent claims described later rather than the detailed description, and the meaning and scope of the patent claims and any changes or modifications derived from their equivalent concepts should be construed as being included in the scope of the present invention.

[0058] Embodiments of the present invention

[0059] The most preferred embodiments of the present invention have been described together with the best embodiments for carrying out the present invention described above.

[0060] Industrial Application Possibilities

[0061] The present invention can concentrate image light emitted from a projector into a visible area and realize a bright screen with high brightness at low power consumption, and therefore has the potential for industrial use.

Claims

1. A reflective screen for a projector, which is a high-brightness metal screen device for 3D that scatters and reflects only the image light incident from the projector to the visual area in front at a set angle, characterized in that: include: The reflective panel portion is formed into a panel shape using a metal material having scattering and reflecting optical properties, with a front surface forming a spherical surface that is concave toward the rear and a rear surface forming a spherical surface that is convex toward the rear; as well as a plurality of metal crystal concave and convex portions, which protrude from the front of the reflective panel portion and have a set surface roughness (Ra), and scatter and reflect light emitted from the projector toward the set visible area at a set angle, The reflective panel portion adjusts the viewing distance of the viewing area, the vertical width, the horizontal width, and the brightness of the viewing area by adjusting the surface roughness (Ra) of the metal crystal concave-convex portion.

2. The reflective screen for a projector according to claim 1, wherein: The projector is located at a point of curvature radius (R) forming the front face of the reflective panel portion, The reflective panel portion changes the viewing distance of the viewing area and the vertical width, horizontal width, and brightness of the viewing area by adjusting the curvature radius (R).

3. The reflective screen for a projector according to claim 1, wherein: The reflective panel further includes an adjustment portion connected to the rear of the reflective panel portion for changing the front-to-back position and the reflection angle of the reflective panel portion.

4. The reflective screen for a projector according to claim 3, characterized in that: The regulating unit comprises: a first horizontal support member for fixing to the structure and having an inner first guide slot with a front-to-back length and opening forward; a second horizontal support member, a rear end of which is slidably inserted into the first guide groove and a front end of which protrudes from the front of the first horizontal support member; a hinge portion, provided on a front end of the second horizontal support member, forming a horizontal rotation center in the left-right direction, and rotatably connected to the rear surface of the reflective panel portion; a length adjustment screw that rotates relative to a horizontal rotation center formed along the front-to-rear direction of the first guide slot, and whose front end is connected to the rear end of the second horizontal support member by a screw connection; a length adjustment motor connected to the first horizontal support member, and having a drive shaft protruding to one side mechanically connected to a rear end of the length adjustment screw to transmit a rotational force; an angle adjustment motor connected to one side of the hinge portion, and having a drive shaft protruding to one side to transmit a rotational force to a horizontal rotation center of the hinge portion; and The control unit is used to control the driving of the length adjustment motor and the angle adjustment motor.

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