Double-optical-filter switching module and photographing module

Abstract

The utility model belongs to the technical field of camera devices, and particularly provides a double-optical-filter switching module and a camera module. Two guide rails which are oppositely arranged in the width direction of the fixed frame are arranged on one side of the fixed frame; the full-transparent optical filter bracket and the infrared cut-off optical filter bracket are respectively arranged on two opposite sides of the fixed frame and are provided with mounting holes; the rotating motor comprises a first rotating body and a second rotating body which are the same in shape and size; the first rotating body and the second rotating body respectively penetrate through the corresponding guide rails and are inserted into the mounting hole of the full-transparent optical filter and the mounting hole of the infrared cut-off optical filter bracket, and the first rotating body and the second rotating body respectively drive the full-transparent optical filter bracket and the infrared cut-off optical filter bracket to move relatively under the driving of the rotating motor; according to the utility model, the first rotating body and the second rotating body on the rotating motor drive the full-transparent optical filter support and the infrared cut-off optical filter support to move in the guide rail so as to realize accurate switching of double optical filters.

Description

Technical Field

[0001] The utility model belongs to the technical field of camera devices, and specifically relates to a dual filter switching module and a camera module. Background Art

[0002] IRCUT camera modules are widely used in the market. For example, they are used in products such as drones, new energy vehicles, and police law enforcement devices. Among them, the IRCUT camera module consists of two filter plates, one infrared cut-off or absorption filter plate, and the other full-transmission spectrum filter plate; when the IRCUT camera module is applied to the daytime use scenario, it needs to receive infrared light that cannot be recognized by the human eye, so there is a deviation between the image captured on the image and the image seen by the naked eye. Therefore, an infrared cut-off filter is needed to achieve color restoration; when the IRCUT camera module is applied to the night use scenario, in order to improve the night vision effect of the aforementioned camera module and increase the light input, a full-transmission filter is needed.

[0003] Whether the positions of the two aforementioned filter plates are accurate after switching will affect the quality of the image captured by the aforementioned camera module. Therefore, ensuring that there is no deviation and height difference after the two aforementioned filter plates are switched will be the key to ensuring image quality.

[0004] Based on this, there is an urgent need to invent a dual filter switching module and a camera module to solve the aforementioned technical problems. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is how to ensure that there is no deviation and height difference after the two filter plates are switched. In view of the above problems, a dual filter switching module and a camera module are provided.

[0006] The technical solution of the utility model to solve the above technical problems is to provide a dual filter switching module, including:

[0007] A fixed frame, having two guide rails oppositely arranged along the width direction of the fixed frame on one side;

[0008] A full-transmission filter holder and an infrared cut-off filter holder, which are respectively installed on opposite sides of the fixed frame and both have mounting holes;

[0009] A rotating motor, including a first rotating body and a second rotating body with the same shape and size; the first rotating body and the second rotating body respectively pass through the corresponding guide rails and are inserted into the mounting holes of the full-transmission filter and the infrared cut-off filter holder, and the first rotating body and the second rotating body drive the full-transmission filter holder and the infrared cut-off filter holder to move relatively under the drive of the rotating motor.

[0010] In one specific embodiment, a protruding portion is formed on the bottom side of the infrared cut-off filter holder, and a corresponding stop portion is provided on the fixed frame.

[0011] In one specific embodiment, the protruding portion is disposed opposite to the mounting hole on the infrared cut-off filter holder.

[0012] In one specific embodiment, the top of the full-transparency filter holder has a concave portion adapted to the shape of the first rotating body.

[0013] In one specific embodiment, the concave portion is disposed opposite to the mounting hole on the full-transparency filter holder.

[0014] In one specific embodiment, the mounting hole is an oblong hole along the width direction of the fixed frame.

[0015] In one specific embodiment, the full-transparency filter holder and the infrared cut-off filter holder are respectively placed on the front and back sides of the fixed frame.

[0016] In one specific embodiment, the guide rail is a symmetric arc-shaped guide rail, and the distance value between the middle part and any end part of the guide rail is equal to the length value of the mounting hole.

[0017] In one specific embodiment, the full-transparency filter holder is equipped with a full-transparency filter, and the infrared cut-off filter holder is equipped with an infrared cut-off filter.

[0018] In one specific embodiment, a photographic module is provided, which includes a lens and the dual-filter switching module as described above.

[0019] The beneficial effect of the present utility model is that: the first rotating body and the second rotating body on the rotating motor drive the full-transparency filter holder and the infrared cut-off filter holder to move in the corresponding guide rails, so as to realize the precise switching of the dual filters. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is a schematic structural diagram of the dual-filter switching module and the photographic module under the daylight condition of the present utility model;

[0022] Figure 2It is a schematic structural diagram of a dual - filter switching module and a photography module under night conditions of the present utility model.

[0023] Reference numerals:

[0024] 1. Dual - filter switching module; 10. Fixed frame; 100. Mounting hole; 101. Guide rail; 102. Stopping part;

[0025] 11. Transparent filter holder; 110. Transparent filter; 111. Concave part;

[0026] 12. Infrared - cut filter holder; 120. Infrared - cut filter; 121. Protruding part;

[0027] 13. First rotating body; 14. Second rotating body. Specific embodiments

[0028] To make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0029] Refer to Figure 1 and Figure 2 , the present utility model provides a dual - filter switching module 1, which realizes dual - filter switching through an ICR switching system. It should be noted that the ICR switching system consists of two filters and a power part (for example, electromagnetic, motor or other power sources, and the power part in the present utility model uses a rotating motor). The working principle of the dual - filter switching module 1 is briefly described below. When the daylight is sufficient, the circuit control board in the dual - filter switching module 1 drives itself to switch to the state where the infrared - cut filter 120 is in the working state, and the CCD camera (English name: charge coupled device camera; Chinese name: CCD image sensor) restores the true color. When the light is insufficient at night, the infrared - cut filter 120 is moved away, and at the same time, the transparent filter 110 is in the working state to sense the auxiliary light of the infrared lamp at night.

[0030] The dual filter switching module 1 includes a fixed frame 10, a full-transmission filter holder 11, an infrared cut-off filter holder 12, and a rotating motor (e.g., a stepper motor, a servo motor, etc.). The dual filter switching module 1 drives the rotating motor to drive the full-transmission filter 110 on the full-transmission filter holder 11 and the infrared cut-off filter 120 on the infrared cut-off filter holder 12 on the fixed frame 10 to achieve position switching, so as to avoid problems such as deviation and height difference after the dual filter is switched, so that the dual filter switching module 1 can capture high-quality images in both daytime and nighttime conditions.

[0031] Specifically, two guide rails 101 are provided on one side of the fixed frame 10, which are oppositely arranged along the width direction of the fixed frame 10, so as to drive the full-transmission filter holder 11 and the infrared cut-off filter holder 12 to rotate within the guide rails 101 through the rotating motor, thereby realizing the position switching of the full-transmission filter holder 11 and the infrared cut-off filter holder 12 driven by the rotating motor (for details, refer to the following). The full-transmission filter holder 11 and the infrared cut-off filter holder 12 are respectively installed on opposite sides of the fixed frame 10 and both have mounting holes 100.

[0032] Among them, the rotating motor (not shown in the figure) includes a first rotating body 13 and a second rotating body with the same shape and size; the first rotating body 13 and the second rotating body respectively pass through the corresponding guide rails 101 and are inserted into the mounting holes 100 of the full-transmission filter holder 11 and the mounting holes 100 of the infrared cut-off filter holder 12, and the first rotating body 13 and the second rotating body respectively drive the full-transmission filter holder 11 and the infrared cut-off filter holder 12 to move relatively under the drive of the rotating motor, thereby realizing the precise switching of the dual filters.

[0033] In this specific embodiment, both the first rotating body 13 and the second rotating body can be rotating columns. Of course, the first rotating body 13 and the second rotating body can also be other structures.

[0034] In one specific embodiment, a protruding portion 121 is formed on the bottom side of the infrared cut-off filter holder 12, and a corresponding stop portion 102 is provided on the fixed frame 10 to further avoid problems such as deviation and height difference after the dual filter is switched.

[0035] In one specific embodiment, the protruding portion 121 is oppositely arranged to the mounting hole 100 on the infrared cut-off filter holder 12.

[0036] In one specific embodiment, a concave portion 111 adapted to the shape of the first rotating body 13 is provided at the top of the full-transmission filter holder 11 to further avoid problems such as deviation and height difference after the dual filter is switched.

[0037] In one specific embodiment, the concave portion 111 is disposed opposite to the mounting hole 100 on the all-transmissive filter holder 11.

[0038] In one specific embodiment, the mounting hole 100 is an oblong hole along the width direction of the fixed frame 10, so that when the all-transmissive filter holder 11 or the infrared cut-off filter holder 12 moves along the corresponding guide rail 101 through the first rotating body 13 or the second rotating body, the first rotating body 13 and the second rotating body are always kept within the corresponding mounting hole 100.

[0039] In one specific embodiment, the all-transmissive filter holder 11 and the infrared cut-off filter holder 12 are respectively disposed on the front and back sides of the fixed frame 10.

[0040] In one specific embodiment, the guide rail 101 is a symmetric arc-shaped guide rail 101, and the distance value between the middle part and any end part of the guide rail 101 is equal to the length value of the mounting hole 100.

[0041] In one specific embodiment, the all-transmissive filter holder 11 is equipped with an all-transmissive filter 110, and the infrared cut-off filter holder 12 is equipped with an infrared cut-off filter 120.

[0042] In one specific embodiment, a photographic module is provided, including a lens and the dual-filter switching module 1 as described above.

[0043] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A dual filter switching module, characterized in that, Comprising: A fixed frame, with two guide rails disposed opposite to each other along the width direction of the fixed frame on one side; A full-transmission filter holder and an infrared cut-off filter holder, respectively installed on opposite sides of the fixed frame and both having mounting holes; A rotating motor, including a first rotating body and a second rotating body with the same shape and size; the first rotating body and the second rotating body respectively pass through the corresponding guide rails and are inserted into the mounting holes of the full-transmission filter holder and the mounting holes of the infrared cut-off filter holder, and the first rotating body and the second rotating body respectively drive the full-transmission filter holder and the infrared cut-off filter holder to move relative to each other under the drive of the rotating motor.

2. The dual filter switching module according to claim 1, characterized in that: A protruding portion is formed on the bottom side of the infrared cut-off filter holder, and a corresponding stop portion is provided on the fixed frame.

3. The dual filter switching module according to claim 2, wherein: The protruding portion is disposed opposite to the mounting hole on the infrared cut-off filter holder.

4. The dual filter switching module according to claim 1 or 2, characterized in that: The top of the full-transmission filter holder has a concave portion adapted to the shape of the first rotating body.

5. The dual filter switching module according to claim 4, characterized in that: The concave portion is disposed opposite to the mounting hole on the full-transmission filter holder.

6. The dual filter switching module according to claim 1, wherein: The mounting hole is an elongated hole along the width direction of the fixed frame.

7. The dual filter switching module according to claim 1, wherein: The full-transmission filter holder and the infrared cut-off filter holder are respectively placed on the front and back sides of the fixed frame.

8. The dual filter switching module according to claim 6, wherein: The guide rails are symmetrical arc-shaped guide rails, and the distance value between the middle part and any end part of the guide rail is equal to the length value of the mounting hole.

9. The dual filter switching module according to claim 1, wherein: The full-transmission filter holder is equipped with a full-transmission filter, and the infrared cut-off filter holder is equipped with an infrared cut-off filter.

10. A photographic module, characterized in that: Comprising a lens and a dual-filter switching module according to any one of claims 1-9.

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