Lens adjusting structure and imaging equipment

Abstract

The utility model provides a lens adjusting structure and imaging equipment, the lens adjusting structure comprises a first lens and a second lens, the first lens is a prime lens, the second lens is a zoom lens, and the lens adjusting structure further comprises a shell, a first adjusting gear and a second adjusting gear; the first lens, the second lens and the second adjusting gear are respectively positioned in the shell; the first adjusting gear is rotationally connected with the shell, part of gear teeth of the first adjusting gear are exposed out of the outer wall of the shell, and the first adjusting gear is meshed with the second adjusting gear; the second adjusting gear is sleeved outside the second lens; and the first adjusting gear is used for driving the second adjusting gear to rotate so as to drive the second lens to realize focusing. The lens adjusting structure and the imaging equipment provided by the utility model have relatively good portability, product development and design are freer, and dual-light registration is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of imaging devices, and in particular to a lens adjustment structure and an imaging device. Background Art

[0002] As infrared products gradually penetrate into consumer electronics, home appliance testing, outdoor and other fields, consumers have put forward more stringent requirements on the product's appearance, overall coordination, ease of use, size, etc. As a pocket device, being small and light is crucial.

[0003] There are generally two focusing design methods for dual-light (infrared and natural light) manual observation equipment. One is that the lens protrudes from the outer surface of the equipment, and the lens appearance is knurled. This design method has large requirements on the product's outer envelope size, and the overall appearance of the product is not coordinated. More importantly, when there are dual-light requirements for visible light and infrared, when realizing dual-light alignment, in order to ensure that there is enough operating space when manually focusing, the infrared lens is generally made to protrude from the visible light lens, which will have certain restrictions on the optical field of view of the visible light lens and the infrared lens, which is not conducive to product development. Another design method is to integrate the focusing lens and the focusing roller, and directly drive the lens to focus through the focusing roller on the side of the product. In order to enable the user to touch the focusing roller, this design method needs to be set close to the edge of the device, or the diameter of the focusing roller is increased so that the focusing roller can be touched from the side. This design has a better coordinated appearance and a smaller size, but the focusing lens needs to be set at the edge of the device, which greatly limits the freedom of product development and design. At the same time, the increase in the size of the roller will also increase the distance between infrared and visible light, which is not conducive to dual-light alignment. Summary of the invention

[0004] Based on this, the present application provides a lens adjustment structure and an imaging device to improve at least one of the problems existing in the prior art, namely, limiting the field of view angle of the lens and the freedom of lens design, and being unfavorable for dual-light alignment.

[0005] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] On the one hand, an embodiment of the present application provides a lens adjustment structure, including a first lens and a second lens, the first lens is a fixed-focus lens, the second lens is a zoom lens, and also includes a shell, a first adjustment gear and a second adjustment gear; the first lens, the second lens and the second adjustment gear are respectively located inside the shell; the first adjustment gear is rotatably connected to the shell, and part of the gear teeth of the first adjustment gear are exposed to the outer wall of the shell, and the first adjustment gear and the second adjustment gear are meshed; the second adjustment gear is sleeved outside the second lens; the first adjustment gear is used to drive the second adjustment gear to rotate, thereby driving the second lens to achieve focusing.

[0007] In one embodiment, the first lens is a visible light lens, and the second lens is an infrared lens.

[0008] In one embodiment, the first adjusting gear is sleeved outside the first lens and is rotatably connected to the first lens.

[0009] In one embodiment, the first lens housing is provided with a rotating column, the rotating column is fixedly connected to the housing, and the first adjusting gear is sleeved on the rotating column and is used to rotate around the rotating column.

[0010] In one embodiment, the shell includes a main wall and side walls surrounding the main wall, the main wall is provided with a first through hole and a second through hole, the first through hole is provided with the first lens, the second through hole is provided with the second lens, and the side wall is provided with a gear groove; part of the teeth of the first adjusting gear are exposed outside the shell at the gear groove.

[0011] In one of the embodiments, the gear slot is located at a corner of the housing.

[0012] In one of the embodiments, the lens adjustment structure further includes a rotating shaft disposed in the housing, two ends of the rotating shaft are respectively fixed to the housing, and the first adjustment gear is sleeved on the rotating shaft and is used to rotate around the rotating shaft.

[0013] In one embodiment, the lens adjustment structure also includes a rotating fixing part arranged outside the second lens, the rotating fixing part is fixedly connected to the shell, the rotating fixing part is provided with an external thread, the second adjustment gear is provided with an internal thread used in conjunction with the external thread, the second adjustment gear is fixedly connected to the second lens, and the first adjustment gear is used to drive the second adjustment gear to rotate and make the second lens reciprocate along the axial direction of the rotating fixing part.

[0014] In one of the embodiments, the lens adjustment structure further includes an infrared detector disposed in the housing, and the infrared detector is located on the optical path of the second lens.

[0015] On the other hand, an embodiment of the present application provides an imaging device, comprising the lens adjustment structure as described above.

[0016] The present application has at least the following beneficial effects: the lens adjustment structure provided in the embodiment of the present application, wherein the first lens and the second lens are respectively located inside the housing, reduces the influence on the optical field angle caused by the protrusion of the lens. By setting two adjustment gears (the first adjustment gear and the second adjustment gear), the purpose of adjusting the focus can be achieved, and at the same time, the size of a single adjustment gear will not be too large, and the focusing lens does not need to be set close to the edge of the device, thereby reducing the overall size of the entire product, making it more convenient to carry, and at the same time will not limit the freedom of product development and design, nor will it increase the distance between the first lens and the second lens, which is conducive to dual-light alignment. The imaging device of the embodiment of the present application includes the above-mentioned lens adjustment structure, and therefore, also has the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the overall structure of the imaging device according to an embodiment of the present application.

[0018] Figure 2 for Figure 1 A schematic cross-sectional structural diagram of an imaging device.

[0019] Figure 3 It is a schematic diagram of the exploded structure of the shell of an embodiment of the present application.

[0020] Figure 4 for Figure 1 Schematic diagram of the exploded structure of the imaging device.

[0021] Figure 5 This is a schematic cross-sectional structural diagram of the second adjusting gear according to an embodiment of the present application.

[0022] The meanings of the symbols in the accompanying drawings are as follows:

[0023] 1. First lens; 2. Second lens; 3. Shell; 31. Main wall; 32. Second shell; 33. First through hole; 34. Second through hole; 35. Gear groove; 36. Side wall; 37. First shell; 4. First adjustment gear; 5. Second adjustment gear; 51. Lens mounting groove; 52. Internal thread; 6. Rotating column; 7. Rotating fixing piece; 71. First boss; 72. Second boss; 73. External thread; 8. Infrared detector; 9. Circuit board. DETAILED DESCRIPTION

[0024] The technical solution of the present application is further elaborated in detail below in conjunction with the accompanying drawings and specific embodiments of the specification.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit the implementation of this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating positions or positional relationships, are based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] See also Figure 1 and Figure 2 The lens adjustment structure of the embodiment of the present application includes a first lens 1 and a second lens 2, the first lens 1 is a fixed-focus lens, and the second lens 2 is a zoom lens, and also includes a shell 3, a first adjustment gear 4 and a second adjustment gear 5; the first lens 1, the second lens 2 and the second adjustment gear 5 are respectively located inside the shell 3; the first adjustment gear 4 is rotatably connected to the shell 3, and part of the gear teeth of the first adjustment gear 4 are exposed to the outer wall of the shell 3, and the first adjustment gear 4 and the second adjustment gear 5 are meshed; the second adjustment gear 5 is sleeved outside the second lens 2; the first adjustment gear 4 is used to drive the second adjustment gear 5 to rotate, thereby driving the second lens 2 to achieve focusing.

[0029] like Figure 3 and Figure 4As shown, specifically, in this embodiment, the first lens 1 is a visible light lens, and the second lens 2 is an infrared lens. In other embodiments, any lens can be selected as a zoom lens according to actual needs. The housing 3 in this embodiment is a rectangular parallelepiped, including a first housing 37 and a second housing 32 connected and arranged. The first housing 37 and the second housing 32 are detachably connected, which is convenient for disassembly and maintenance of internal components. In order to make the appearance more beautiful and avoid wear and tear on the corners, the four corners of the housing 3 in this embodiment are respectively rounded.

[0030] like Figure 2 and 3 As shown, the housing 3 includes a main wall surface 31 and a side wall surface 36 arranged around the main wall surface 31. The main wall surface 31 is respectively provided with a first through hole 33 and a second through hole 34. The first through hole 33 is provided with a first lens 1, and the second through hole 34 is provided with a second lens 2. The first through hole 33 and the second through hole 34 are used to form a light entry passage for the lens. The first lens 1 and the second lens 2 of this embodiment are arranged on the main wall surface 31 of the housing 3 at intervals, the second lens 2 is arranged near the center of the main wall surface 31, and the second lens 2 is arranged near a corner of the housing 3. The housing 3 is provided with a gear groove 35 at the corner where the second lens 2 is arranged. The gear groove 35 is located on the side wall surface 36, and is used to expose the first adjustment gear 4 to the housing 3 so as to facilitate rotation and adjustment thereof.

[0031] like Figure 2 and Figure 4 As shown, the first adjustment gear 4 of this embodiment is sleeved outside the first lens 1 and is rotatably connected to the first lens 1. Specifically, for example, a rotating column 6 with a hollow structure can be disposed outside the first lens 1, the rotating column 6 is fixedly connected to the housing 3, and the first adjustment gear 4 is sleeved outside the rotating column 6 and is rotatably connected to the rotating column 6 for rotating around the rotating column 6.

[0032] like Figure 2 and Figure 5As shown, the second adjustment gear 5 of this embodiment is sleeved outside the second lens 2, and the end of the second adjustment gear 5 away from the main wall surface 31 is provided with a lens mounting groove 51 recessed inwardly, the second lens 2 is mounted in the lens mounting groove 51, and the end of the second lens 2 close to the main wall surface 31 is fixedly connected to the bottom wall of the mounting groove. The lens adjustment structure of this embodiment also includes a rotating fixing member 7 arranged outside the second lens 2, and the rotating fixing member 7 is fixedly connected to the housing 3, including a first boss 71 and a second boss 72, the first boss 71 is a hollow structure, the second lens 2 is accommodated in the hollow structure of the first boss 71, the outer wall of the first boss 71 is provided with an external thread 73, and the inner wall of the lower part of the second adjustment gear 5 is provided with an internal thread 52 used in conjunction with the external thread 73. The end of the second boss 72 close to the main wall surface 31 is fixedly provided with the first lens 1, and the outer periphery of the second boss 72 is sleeved with a rotating column 6. When the first adjusting gear 4 is manually adjusted to make the first adjusting gear 4 rotate around the rotating column 6, the first adjusting gear 4 and the second adjusting gear 5 are meshed, and the second adjusting gear 5 rotates in the opposite direction relative to the first adjusting gear 4. Since the rotating fixing member 7 is fixed, the second adjusting gear 5 rotates so that its internal thread 52 cooperates with the external thread 73 of the rotating fixing member 7, thereby moving the second adjusting gear 5 along the axial direction of the first boss 71 toward the main wall surface 31 or away from the main wall surface 31. Since the second adjusting gear 5 and the second lens 2 are fixedly connected, the second lens 2 moves synchronously with the second adjusting gear 5, and the focusing of the second lens 2 can be achieved.

[0033] In other embodiments, the installation position of the first lens 1 can also be selected according to actual needs. In the above example, the first lens 1 is set near the corner of the main wall 31 to reduce the overall size of the device and make it thinner. For example, the first lens 1 can be set near a side wall 36. In the above example, the rotating column 6 is set outside the first lens 1, which can make full use of the space to reduce the volume of the device. In other embodiments, the rotating column 6 and the first lens 1 can also be set separately. For example, a rotating shaft (not shown) can be set in the shell 3, and the two ends of the rotating shaft are respectively fixed on the shell 3. The first adjustment gear 4 is set on the rotating shaft and is rotatably connected with the rotating shaft. The gear teeth of the first adjustment gear 4 are also partially exposed outside the shell 3 for manually adjusting the focal length of the second lens 2. The first lens 1 can be selected to be fixed according to actual needs. For example, it can be set on the opposite sides of the second lens 2 with the first adjustment gear 4.

[0034] like Figure 2 and Figure 4 As shown, the lens adjustment structure of this embodiment further includes an infrared detector 8 disposed in the housing 3 . The infrared detector 8 is located on the optical path of the second lens 2 , for example, it can be disposed on a side of the second lens 2 away from the main wall 31 .

[0035] The present application also provides an imaging device, specifically, for example, a thermal imager including the above-mentioned lens adjustment structure, and also including an interface module (not shown) and a circuit board 9, the circuit board 9 is arranged in the housing 3, and is electrically connected to the infrared detector 8 and the interface module, and the interface module can be arranged on the outer wall of the housing 3 for connecting with other electronic devices, such as a mobile phone. In other embodiments, the lens adjustment structure can also be used in other devices that require dual light adjustment, not just limited to thermal imagers.

[0036] The lens adjustment structure and imaging device of the embodiment of the present application, wherein the first lens is located inside the rotating column, rationally utilizes the space inside the shell, greatly reduces the overall size of the device, and is conducive to the development of the product in the direction of lightness and thinness. The first adjustment gear and the second adjustment gear respectively utilize the external structure of the first lens and the second lens to avoid occupying more space. The second lens can be set at the center of the main wall of the shell, which will not limit the freedom of product development and design, and is conducive to dual-light alignment; and the first lens and the second lens are respectively located inside the shell, and do not protrude from the shell, which can avoid the optical deviation problem caused by accidental falling, and is conducive to the light and thin design of the product, and will not affect the optical field of view. The lens adjustment structure and imaging device of the embodiment of the present application have high overall consistency, no protruding special-shaped structure, better coordination and visual perception, and the design of the first adjustment gear and the second adjustment gear can effectively shorten the distance between the infrared lens and the visible light lens, making it easy to achieve dual-light fusion.

[0037] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0038] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A lens adjustment structure, comprising a first lens (1) and a second lens (2), wherein the first lens (1) is a fixed-focus lens and the second lens (2) is a zoom lens, characterized in that: The invention also comprises a housing (3), a first adjusting gear (4) and a second adjusting gear (5); the first lens (1), the second lens (2) and the second adjusting gear (5) are respectively located inside the housing (3); the first adjusting gear (4) is rotatably connected to the housing (3), and part of the gear teeth of the first adjusting gear (4) are exposed to the outer wall of the housing (3), and the first adjusting gear (4) and the second adjusting gear (5) are meshed; the second adjusting gear (5) is sleeved outside the second lens (2); the first adjusting gear (4) is used to drive the second adjusting gear (5) to rotate, thereby driving the second lens (2) to achieve focusing.

2. The lens adjustment structure according to claim 1, characterized in that: The first lens (1) is a visible light lens, and the second lens (2) is an infrared lens.

3. The lens adjustment structure according to claim 1 or 2, characterized in that: The first adjustment gear (4) is sleeved outside the first lens (1) and is rotationally connected to the first lens (1).

4. The lens adjustment structure according to claim 3, characterized in that: The first lens (1) is provided with a rotating column (6) on its outer sleeve, the rotating column (6) is fixedly connected to the housing (3), and the first adjusting gear (4) is sleeved on the rotating column (6) and is used to rotate around the rotating column (6).

5. The lens adjustment structure according to claim 1, characterized in that: The housing (3) comprises a main wall surface (31) and a side wall surface (36) arranged around the main wall surface (31); the main wall surface (31) is provided with a first through hole (33) and a second through hole (34); the first through hole (33) is provided with the first lens (1); the second through hole (34) is provided with the second lens (2); the side wall surface (36) is provided with a gear groove (35); part of the gear teeth of the first adjusting gear (4) are exposed outside the housing (3) at the gear groove (35).

6. The lens adjustment structure according to claim 5, characterized in that: The gear groove (35) is located at a corner of the housing (3).

7. The lens adjustment structure according to claim 1, characterized in that: It also comprises a rotating shaft arranged in the housing (3), the two ends of the rotating shaft are respectively fixed on the housing (3), and the first adjusting gear (4) is sleeved on the rotating shaft and is used to rotate around the rotating shaft.

8. The lens adjustment structure according to claim 1, characterized in that: The invention also comprises a rotating fixing member (7) arranged outside the second lens (2), the rotating fixing member (7) being fixedly connected to the housing (3), the rotating fixing member (7) being provided with an external thread (73), the second adjusting gear (5) being provided with an internal thread (52) used in conjunction with the external thread (73), the second adjusting gear (5) being fixedly connected to the second lens (2), and the first adjusting gear (4) being used to drive the second adjusting gear (5) to rotate and to make the second lens (2) reciprocate along the axial direction of the rotating fixing member (7).

9. The lens adjustment structure according to claim 2, characterized in that: It also includes an infrared detector (8) arranged in the housing (3), and the infrared detector (8) is located on the optical path of the second lens (2).

10. An imaging device, characterized in that: It comprises a lens adjustment structure as described in any one of claims 1 to 9.

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