Virtual image volume display device

Abstract

The present invention discloses a virtual image volume display device, which relates to the field of holographic display equipment and avoids the problem of high-frequency vibration of imaging components in the prior art. The present invention includes: a fixed component, a rotating component and a display drive component. The fixed component includes: a housing, a first base body that passes through the hollow shaft of the motor and fixes the self-rotating oblique mirror. The rotating component includes: a hollow shaft motor, a cylindrical bracket with a fixed mirror on the inner wall, a gear set on the first base body and a self-rotating oblique mirror. The display drive component includes: a screen with hollows between pixel points that can transmit light, and a controller for the screen and the hollow shaft motor. When the rotating component rotates, the self-rotating oblique mirror and the inner wall mirror of the cylindrical bracket maintain an angle of 45 degrees and the distance between the two changes periodically, and a volume display composed of a periodically vibrating screen virtual image can be observed behind the screen. The mechanical parts of the present invention only include rotational motion, and the imaging parts are fixed, which is suitable for holographic viewing.

Description

Technical Field

[0001] The present invention relates to the field of holographic display equipment, and in particular to a virtual image volume display device. Technical Background

[0002] With the advancement of technology, volumetric display devices based on projection onto a high-frequency vibrating translucent screen have appeared on the market. However, high-frequency vibration brings huge noise and safety hazards, and its volumetric display device requires a reinforced glass cover to protect users. Summary of the invention

[0003] In view of this, the present invention proposes a virtual image volume display device, the main purpose of which is to avoid the problem of high-frequency vibration of imaging components in the prior art. In order to achieve the above-mentioned purpose, the present invention provides a virtual image volume display device, which includes: a fixed component, a rotating component and a display drive component. Among them, the fixed component includes: a shell that fixes the hollow shaft motor base and the display drive component and provides a circuit connection for the two, and a first substrate that passes through the hollow shaft of the motor and fixes the self-rotating oblique mirror; the rotating component includes: an outer rotor of the hollow shaft motor, a cylindrical bracket fixedly connected to the outer rotor of the hollow shaft motor and with a mirror fixed on the inner wall, a gear set on the first substrate, and a self-rotating oblique mirror driven by the outer rotor of the hollow shaft motor and the gear set; the display drive component includes: a screen with pixels facing the self-rotating oblique mirror and hollows between pixels to allow light to pass through, and a controller that controls the screen and the hollow shaft motor.

[0004] Furthermore, the rotor of the hollow shaft motor directly drives the cylindrical bracket to rotate, and at the same time drives the gear set, thereby driving the self-rotating oblique mirror to rotate.

[0005] Furthermore, the gear transmission ratio at both ends of the gear set is 1:1 and the rotation direction is the same, so that during the rotation of the hollow shaft motor, the self-rotating oblique mirror always rotates at the same angle as the cylindrical bracket, so that the self-rotating oblique mirror always rotates at an angle of 45 degrees to the mirror surface fixed on the inner wall of the cylindrical bracket.

[0006] Furthermore, the light from the screen in the display driving component is reflected by the self-rotating oblique mirror to the mirror fixed on the inner wall of the cylindrical bracket, then reflected back to the self-rotating oblique mirror, and then reflected back to the direction of the screen. Finally, part of the light is transmitted through the hollow on the screen to the human eyes behind the screen, allowing the human eyes to see the virtual image of the screen below the screen through two sets of mirrors.

[0007] Furthermore, the rotation axis of the self-rotating oblique mirror is offset from the axis of the cylindrical bracket, and the distance between the self-rotating oblique mirror and the mirror surface of the inner wall of the cylindrical bracket changes periodically during the rotation of the rotating component, and thus the optical path of the screen light propagation changes periodically during the rotation of the rotating component.

[0008] Furthermore, the controller in the display driving component controls the rotation of the hollow shaft motor and the content of the screen pixels, so that the virtual image seen by the human eye changes periodically in distance, and a volumetric image is observed by the persistence of vision effect.

[0009] By means of the above technical solution, a virtual image volume display device provided by the present invention realizes the periodic vibration of the virtual image through the rotational motion of two groups of mirrors, thereby generating a volume image of the virtual image, thereby avoiding high-frequency vibration of the imaging component.

[0010] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0012] Figure 1 A virtual image volume display device provided by an embodiment of the present invention is shown;

[0013] Figure 2 The figure shows a state where a rotating component of a virtual image volume display device provided by an embodiment of the present invention rotates a certain angle;

[0014] Figure 3 Shows Figure 2 The device is shown in a top view with the housing removed. DETAILED DESCRIPTION

[0015] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0016] In order to solve the problem of high frequency vibration of imaging components in the prior art, an embodiment of the present invention provides a virtual image volume display device, such as Figure 1 As shown, the virtual image volume display device includes a shell 1, a hollow shaft motor 2 whose base is fixed by the shell 1, a cylindrical bracket 3 directly connected to and driven to rotate by the hollow shaft motor 2, a gear 4 directly connected to and driven to rotate by the hollow shaft motor 2, a gear 5 driven by the gear 4, a gear 6 driven by the gear 5, a support 7 that passes through the hollow shaft of the motor and fixes the first base, a first base 8, a mirror 9 fixed to the inner wall of the cylindrical bracket 3, a self-rotating oblique mirror 10 connected to and driven to rotate by the gear 6, and a display driving component 11 fixed through the shell 1 and communicating with the hollow shaft motor 2.

[0017] The screen of the display driving assembly 11 is located above the self-rotating oblique mirror 10, with the light-emitting surface of the screen facing the self-rotating oblique mirror 10. Hollows are left between the pixels of the screen so that light can pass through the screen.

[0018] Gear 4 and gear 6 have the same number of teeth and module, and thus the same rotation speed and direction. At any time, the angle between mirror 10 and mirror 9 is 45 degrees. Figure 1 The state of the device shown after a certain period of operation is referenced Figure 2 and Figure 3 , Figure 2 and Figure 1 The same perspective, Figure 3 for Figure 2 The device is shown in a top view after the housing is removed. The states of the mirror 10 and the mirror 9 have changed, and the angle between the two mirrors is 45 degrees.

[0019] The rotation axis of the rotating oblique mirror 10 deviates from the axis of the cylindrical support 3, so that the optical path changes periodically during the rotation process, such as Figure 1 The distance between the mirror surface of the self-rotating oblique mirror 10 and the mirror surface 9 is as follows: Figure 2 The distance between the two is small.

[0020] The display driving component 11 controls the pixel display of the included screen, and controls the rotation of the hollow shaft motor 2 via the circuit provided by the housing 1, thereby ensuring that the virtual images of the screen at different positions display different pictures.

Claims

1. A virtual image volume display device, the virtual image volume display device comprising: A housing, a hollow shaft motor, a cylindrical bracket driven to rotate by the hollow shaft motor, a mirror fixed on the inner wall of the cylindrical bracket, a first base body passing through the hollow shaft of the hollow shaft motor, a rotating oblique mirror rotating on the first base body, a gear set driving the rotating oblique mirror, a display screen located above the rotating oblique mirror, and a controller driving the display screen and the hollow shaft motor.

2. The virtual image volume display device according to claim 1, characterized in that: The hollow shaft motor base is fixed by the outer shell, the rotor of the hollow shaft motor drives the gear set, and the gear set drives the self-rotating oblique mirror to rotate.

3. The virtual image volume display device according to claim 1, characterized in that: The rotor of the hollow shaft motor drives the cylindrical bracket and the mirror surface fixed on the inner wall of the cylindrical bracket to rotate.

4. The virtual image volume display device according to claim 1, characterized in that: The support column of the first substrate passes through the hollow shaft of the hollow shaft motor and is fixed to the shell.

5. The virtual image volume display device according to claim 1, characterized in that: The mirror surface fixed on the inner wall of the cylindrical bracket forms an angle of 45 degrees with the mirror surface of the self-rotating oblique mirror.

6. The virtual image volume display device according to claim 1, characterized in that: The gear transmission ratio at both ends of the gear set is 1:1 and the rotation directions are the same.

7. The virtual image volume display device according to claim 1, characterized in that: The rotation axis of the self-rotating tilt mirror deviates from the rotation axis of the cylindrical support.

8. The virtual image volume display device according to claim 1, characterized in that: The light-emitting surface of the display screen faces the self-rotating oblique mirror and the pixels are hollowed out to allow light to pass through.

Images