Light path adjusting structure, naked eye 3D display and projector

Abstract

The invention provides a light path adjusting structure and a naked eye 3D display. The light path adjusting structure comprises a light source; the movable module is arranged in the irradiation direction of the light source; the movable module comprises a shell; the lens frame is provided with an adjusting lens, the adjusting lens is used for adjusting the direction of emergent light of the light source, the first end of the lens frame is rotationally connected with the shell through a fixed rotating shaft, and the second end, opposite to the first end, of the lens frame is slidably connected with the shell; the driving assembly is connected with the second end of the lens frame, and the second end and the shell are driven to move relatively, so that the lens frame and the adjusting lens are driven to rotate in the direction parallel to the emergent light. Controllable operation on the light direction can be achieved under the condition that the original overall structure is not changed, and the pain point that a complex mechanical structure or a light transmission angle cannot be debugged in the industry is expected to be reduced.

Description

Technical Field

[0001] The present invention relates to the field of optical components, and in particular to an optical path adjustment structure, a naked-eye 3D display, and a projector. Background Art

[0002] Currently, most optical lenses or refractors on the market achieve the refraction and convergence of light through zooming, and are unable to directly refract light. Even if there are some lenses that can refract light, they are all fixed-angle, and are unable to adjust the light refraction angle in real time as needed. Moreover, such devices are based on a large mechanical structure combined with a lens body, and are manually adjusted.

[0003] Therefore, a technical solution is needed to change the direction of light as needed, so as to achieve the technical problem that light can only be transmitted in a fixed direction in the display industry, optical field, projection industry, etc. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an optical path adjustment structure, a naked-eye 3D display, and a projector capable of changing the direction of light as needed.

[0005] In order to solve the above problems, the present invention provides an optical path adjustment structure, comprising: a light source; a movable module arranged in the irradiation direction of the light source, the movable module comprising: a shell; a lens frame, the lens frame is installed with an adjustment lens, the adjustment lens is used to adjust the direction of the output light of the light source, the first end of the lens frame is rotatably connected to the shell through a fixed rotating shaft, and the second end opposite to the first end is slidably connected to the shell; a driving component, the driving component is connected to the second end of the lens frame, and drives the second end to move relative to the shell, thereby driving the lens frame and the adjustment lens to rotate in a direction parallel to the output light.

[0006] Optionally, the driving assembly includes a driver and a connecting rod connected to the driver, the connecting rod is connected to the second end of the lens frame, and the driver drives the connecting rod to move in a direction parallel to the emergent light to drive the lens frame and the adjustment lens to rotate in a direction parallel to the emergent light; the driver is a stepping motor or a linear motor.

[0007] Optionally, the second end is slidably connected to the shell, including: a slide rail is provided on the shell, and the second end is provided with a slider that cooperates with the slide rail.

[0008] Optionally, the light source includes: a point light source; and a collimating lens arranged in the irradiation direction of the point light source, wherein the collimating lens is used to collimate the light emitted by the point light source into parallel light.

[0009] Optionally, the point light source is an LED light source.

[0010] In order to solve the above problems, the present invention provides a naked-eye 3D display, including a pixel array, wherein the pixel array includes a first pixel unit and a second pixel unit adopting the optical path adjustment structure provided by the present invention, and the first pixel unit and the second pixel unit respectively adjust the emitted light to a first direction and a second direction.

[0011] In order to solve the above problems, the present invention provides a projector, including a projection pixel array, wherein the projection pixel array includes a first pixel unit and a second pixel unit adopting the optical path adjustment structure provided by the present invention, and the first pixel unit and the second pixel unit respectively adjust the output light to a first direction and a second direction.

[0012] The present invention can realize the controllable operation of the light direction without changing the original overall structure, so as to reduce the pain points of complex mechanical structure or inability to adjust the light transmission angle in the aforementioned industries. In this way, the technical problem that the light can only be transmitted in a fixed direction in the display industry, optical field, projection industry, etc. is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 It is a schematic diagram of the optical path adjustment structure described in a specific embodiment of the present invention.

[0014] Attached Figure 2 Yes Figure 1 The internal structure diagram after removing part of the outer shell.

[0015] Attached Figure 3 Yes Figure 1 A cross-sectional view of the structure.

[0016] Attached Figure 4 Yes Figure 1 Schematic diagram of the working status of the structure. DETAILED DESCRIPTION

[0017] The specific implementations of the optical path adjustment structure, the naked-eye 3D display, and the projector provided by the present invention are described in detail below with reference to the accompanying drawings.

[0018] Attached Figure 1 FIG. 1 is a schematic diagram of an optical path adjustment structure according to a specific embodiment of the present invention, and FIG. Figure 2 Yes Figure 1 The internal structure diagram after removing part of the outer shell, attached Figure 3 Yes Figure 1 A cross-sectional view of the structure.

[0019] Reference Figure 1 To Attachment Figure 3As shown, the structure includes: a light source 10 and a movable module 20 arranged in the irradiation direction of the light source.

[0020] In this specific embodiment, the light source 10 includes a point light source 11, and a collimating lens 12 arranged in the irradiation direction of the point light source 11, and the collimating lens 12 is used to collimate the light emitted by the point light source into parallel light. The point light source 11 is preferably an LED. The connection between the collimating lens 12 and the housing 21 is connected by screws, so that the collimating lens 12 is not installed when the entire product is installed in a scene where it is not needed, such as a collimated light source (such as a laser). In other specific embodiments, it can also include an array composed of multiple point light sources, and each light source is correspondingly configured with a collimating lens. It can also be formed in any other common way to form parallel or non-parallel output light.

[0021] The movable module 20 includes: a housing 21, a lens frame 22 and a driving assembly 23. The housing 21 is preferably made of a black material that is not completely opaque. The lens frame 22 is configured to install an adjustment lens 24, and the adjustment lens 24 is a Fresnel lens or the like for collimating the direction of the outgoing light of the light source 12. The adjustment lens 24 is preferably a single-transmission structure, that is, light can only enter from the outside and is transmitted from the opposite direction of the incident light. The main purpose of using a collimating lens is that when this structure is applied to a scattered light source, the convergence function of the lens is used to enhance its output power and transmit it along the normal direction of the inner side of the lens. In addition, the first end of the lens frame 22 is rotatably connected to the housing 21 through a fixed shaft 221.

[0022] In this specific embodiment, the lens frame 22 is rectangular, and the fixed shaft 221 is arranged at one end close to one side of the rectangle. In other specific embodiments, the fixed shaft 221 can also be arranged at the symmetrical center position of the rectangle, so that the lens frame rotates around the center. The shape of the lens frame 22 can also be circular or other shapes, and a corresponding fixed shaft 221 that can rotate it is arranged. The second end 222 opposite to the first end 221 is slidably connected to the shell. In this specific embodiment, the connection is further provided with a slide rail 211 on the shell 21, and the second end is provided with a slider 222 that cooperates with the slide rail 211. The slide rail 211 and the slider 222 that cooperates therewith can be arranged on a single side of the shell 21, or can be symmetrically arranged on opposite sides. In a specific embodiment, if the fixed shaft 221 is arranged at the symmetrical center position of the rectangle, corresponding slide rails and sliders can be arranged at both ends symmetrical to the symmetry axis.

[0023] The driving assembly 23 is connected to the second end of the lens frame 22, and drives the second end to move relative to the housing 21, thereby driving the lens frame 22 and the adjustment lens 24 to rotate in a direction parallel to the emitted light. Figure 3 FIG. 1 is a cross-sectional view of the structure of this specific embodiment. Figure 3 As shown, in this specific embodiment, the driving assembly 23 includes a driver (located in a housing below the connecting rod, not shown) and a connecting rod 232 connected to the driver, and the connecting rod 232 is connected to the second end of the lens frame 22. The driver drives the connecting rod 232 to move in a direction parallel to the emergent light to drive the lens frame 22 and the adjustment lens 24 to rotate in a direction parallel to the emergent light.

[0024] Attached Figure 4 The figure shows a schematic diagram of the working state of the above structure, wherein (a) and (b) represent different light emission directions, respectively. When the above structure is working, it will not work until the control system is turned on and outputs normal input current. According to the magnitude of the current, the driver is in different positions, driving the adjustment lens to point the emitted light to different directions. In addition, as the entire system loses power, the lens frame 22 will return to the default initial state, and this state is set as the system self-check state, so that the system can determine whether the lens frame 22 can operate normally without external sensors. The driver 231 is made of a material (which can be liquid or metal) that can be extended or shortened according to the magnitude of the current as a drive, and can also be a stepper motor or a linear motor, or other accessories or devices or materials with linear drive functions.

[0025] The above structure outputs the corresponding current by inputting the control signal angle to drive the driving component 23 to operate. A 6-pin serial driving method can be adopted to facilitate the transmission of signals to the next driver, including 1 power supply, 1 ground, 2 input signals, and 2 output signals. There is a Bypass function between the input and output signals to ensure that when a driver IC fails, the normal working output of the driver IC in series at the rear end is not affected.

[0026] The above technical solution achieves an effect of changing the direction of light as needed, so as to achieve the effect that light can only be transmitted in a fixed direction in the display industry, optical field, projection industry, etc. The above technical solution can be used to achieve controllable operation of the direction of light without changing the original overall structure, so as to reduce the pain points of complex mechanical structures or inability to adjust the light transmission angle in the aforementioned industries.

[0027] By adopting the above structure, a specific embodiment of a naked-eye 3D display can also be provided. The display includes a pixel array, and the pixel array includes a first pixel unit and a second pixel unit using the above optical path adjustment structure, and the first pixel unit and the second pixel unit respectively adjust the emitted light to a first direction and a second direction, or more directions.

[0028] By adopting the above structure, a specific embodiment of a projector can also be provided. The projector comprises a projection pixel array, wherein the projection pixel array comprises a first pixel unit and a second pixel unit adopting the above optical path adjustment structure, wherein the first pixel unit and the second pixel unit respectively adjust the emitted light to a first direction and a second direction, or more directions.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An optical path adjustment structure, characterized in that: include: light source; A movable module is arranged in the irradiation direction of the light source, and the movable module comprises: shell; A lens frame, wherein an adjusting lens is installed on the lens frame, and the adjusting lens is used to adjust the direction of the emitted light of the light source, wherein a first end of the lens frame is rotatably connected to the housing through a fixed rotating shaft, and a second end opposite to the first end is slidably connected to the housing; A driving assembly is connected to the second end of the lens frame, and drives the second end to move relative to the housing, thereby driving the lens frame and the adjusting lens to rotate in a direction parallel to the emitted light.

2. The structure according to claim 1, characterized in that: The driving assembly includes a driver and a connecting rod connected to the driver, wherein the connecting rod is connected to the second end of the lens frame, and the driver drives the connecting rod to move in a direction parallel to the emergent light to drive the lens frame and the adjustment lens to rotate in a direction parallel to the emergent light.

3. The structure according to claim 2, characterized in that: The driver is a stepping motor or a linear motor.

4. The structure according to claim 1, characterized in that The second end is slidably connected to the shell, comprising: a slide rail is provided on the shell, and a slider matched with the slide rail is provided on the second end.

5. The structure according to claim 1, characterized in that The light source comprises: Point light source; A collimating lens is arranged in the irradiation direction of the point light source, and is used to collimate the light emitted by the point light source into parallel light.

6. The structure according to claim 1, characterized in that The point light source is an LED light source.

7. A naked eye 3D display, characterized in that: It comprises a pixel array, wherein the pixel array comprises a first pixel unit and a second pixel unit adopting the light path adjustment structure of claim 1, wherein the first pixel unit and the second pixel unit adjust the emitted light to a first direction and a second direction respectively.

8. A projector, characterized in that: It comprises a projection pixel array, wherein the projection pixel array comprises a first pixel unit and a second pixel unit adopting the optical path adjustment structure of claim 1, wherein the first pixel unit and the second pixel unit adjust the emitted light to a first direction and a second direction respectively.

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