Lens structure and monitoring camera
By designing the threaded fit and notch structure of the adjustment ring and the frame in the lens structure, the problem of difficult glue is solved, and the lens is more stable and more secure.
Patent Information
- Application Number
- CN202421206923.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-29
AI Technical Summary
During the production process of existing lenses, it is difficult for glue to penetrate completely into the gap between the frame and the lens bracket, resulting in poor curing and affecting the stability and focus effect of the lens.
A lens structure is designed, using the threads of the adjustment ring to match the frame, and a notch is opened on the surface of the adjustment ring to expose the threads of the mirror frame, which facilitates glue filling and curing. At the same time, grooves are set on the adjustment ring to facilitate positioning and adhesive bonding. .
Through this design, the lens focusing process is more stable and the glue curing is more firm, which solves the problem of poor glue curing and improves the focus accuracy and connection strength of the lens.
Smart Images
Figure CN222439744U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to lens structure technology, and in particular to a lens structure and a surveillance camera. Background Art
[0002] During the production process of existing lenses, the height of the lens needs to be adjusted according to the optical sensor of the camera, and then the position of the lens is fixed by glue. Since the gap between the frame and the lens bracket is very small, it is difficult for the glue to completely penetrate into the gap between the frame and the lens bracket, and ultraviolet light is also difficult to penetrate, resulting in poor solidification of the glue, which is inconvenient to process. Utility Model Content
[0003] The purpose of the utility model is to solve the above-mentioned problem and provide a lens structure and a monitoring camera.
[0004] The technical solution of the present disclosure is achieved as follows:
[0005] In a first aspect, the present disclosure provides a lens structure, including a lens group, and the lens structure further includes:
[0006] The lens frame is a hollow through structure and is located in the middle of the lens structure;
[0007] An adjusting ring, the inner ring surface of which is threadably matched with the outer peripheral surface of the mirror frame;
[0008] The inner annular surface of the adjusting ring and the outer peripheral surface of the lens frame are both provided with mutually matching threads;
[0009] The portion of the surface of the adjustment ring close to the central ring opening has a thickened portion, and the thickened portion is provided with a notch, and the notch exposes the threads on the outer peripheral surface of the frame.
[0010] The advantages or beneficial effects of the above technical solution include at least:
[0011] ①The lens focusing process is more convenient and more stable. When the lens is not in focus, the best focusing effect can be achieved by adjusting the position of the adjustment ring up and down.
[0012] ② The material of the adjustment ring is transparent plastic, which is more convenient for the lens bracket to do glue curing. After the UV glue is applied between the adjustment ring and the lens bracket, the ultraviolet light source can fully penetrate the adjustment ring to cure the glue, making the glue curing time shorter and the curing effect better, which not only ensures the strength of the connection but also saves production costs / production time.
[0013] ③ Two notches are made in the structural design of the adjustment ring: to facilitate glue dispensing at the threaded connection between the frame and the adjustment ring / glue curing is more firmly in place / facilitate automatic glue dispensing positioning and identification.
[0014] ④ Focusing structure is designed on the adjustment ring structure: Four groove focusing structures are made on the adjustment ring, so that the lens focusing is more stable and accurate during the assembly of the adjustment ring to the module / focusing process, and the focusing process is not easy to shake.
[0015] ⑤ In the design of the lens and lens bracket structure, the adjustment ring and the lens bracket contact surface are fixed by glue. This can solve the dust and
[0016] The impact of excessive optical axis deviation between the frame and lens bracket, loose or tight torque between the frame and lens bracket, etc.
[0017] The lens of this solution adopts a (4 glass lenses + 2 plastic lenses) design. The lens has low cost and can meet the operating temperature requirements of -40℃ to 85℃. It has high image resolution and can maintain stable high-definition image quality.
[0018] In a second aspect, the present disclosure further provides a surveillance camera, which adopts any one of the above-mentioned lens structures.
[0019] The advantages or beneficial effects of the above technical solution include at least:
[0020] The beneficial effects of this embodiment have been clearly explained above and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The accompanying drawings illustrate exemplary implementations of the present disclosure of embodiments of the utility model and, together with the description, are used to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure, and the accompanying drawings are included in and constitute a part of this specification.
[0022] Figure 1 A schematic diagram showing the structure of a lens in an embodiment of the utility model is shown;
[0023] Figure 2 A schematic diagram showing a cutaway view of a lens according to an embodiment of the utility model is shown;
[0024] Figure 3 A first assembly schematic diagram of the lens structure of an embodiment of the utility model is shown;
[0025] Figure 4 A second assembly schematic diagram of the lens structure of an embodiment of the utility model is shown;
[0026] Figure 5 A schematic diagram showing an adjustment ring of an embodiment of the utility model is shown;
[0027] Figure 6 A schematic diagram showing the position of the notch in an embodiment of the utility model;
[0028] Reference numerals: 10, lens frame; 20, adjustment ring; 21, thickened portion; 211, notch; 22, groove; 30, lens group; 31, first lens; 32, second lens; 33, third lens; 34, fourth lens; 35, fifth lens; 36, sixth lens; 301, Mylar; 302, first spacer; 303, second spacer; 40, pressure ring; 50, lens holder; DETAILED DESCRIPTION
[0029] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain 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 construed as being limited to the embodiments set forth herein, which are instead provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.
[0030] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0031] It should be understood that the term "including" and its variations used in this document are open inclusions, that is, "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions of other terms will be given in the description below. It should be noted that the concepts of "first", "second", etc. mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.
[0032] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".
[0033] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only used for illustrative purposes and are not used to limit the scope of these messages or information.
[0034] Reference Figure 1 and Figure 2A lens structure includes a lens group 30, which includes, from the object side to the image side, a first lens 31, a second lens 32, a third lens 33, a fourth lens 34, a fifth lens 35 and a sixth lens 36, wherein the fourth lens 34 and the fifth lens 35 are combined into a combined lens; wherein the sixth lens 36 and the second lens 32 are plastic lenses; the first lens 31, the third lens 33, the fourth lens 34 and the fifth lens 35 are glass lenses. Under such a design, the lens cost is low and can meet the operating temperature requirements of -40°C to 85°C, and the image resolution is high and stable high-definition image quality can be maintained;
[0035] The Mylar sheet 301 is installed between the second lens 32 and the third lens 33 , the first spacer 302 is installed between the third lens 33 and the fourth lens 34 , and the second spacer 303 is installed between the fifth lens 35 and the sixth lens 36 .
[0036] The lens structure also includes;
[0037] The lens frame 10 is a hollow through structure, which is located in the middle of the lens structure. The second lens 32 to the sixth lens 36 are installed in the lens frame 10, and the first lens 31 is installed at the front end of the lens structure.
[0038] An adjusting ring 20, the inner ring surface of the adjusting ring 20 is threadedly matched with the outer peripheral surface of the frame 10, and the inner ring surface of the adjusting ring 20 and the outer peripheral surface of the frame 10 are both provided with mutually matching threads. The lens structure further includes a lens bracket 50, and the lens bracket 50 is connected to the adjusting ring 20 by means of a glue layer. During production, the relative position of the frame 10 and the lens bracket 50 can be adjusted by threading the adjusting ring 20 with the frame 10, and the position of the lens group 30 can be adjusted to adapt to different camera equipment. Furthermore, the contact surface between the adjusting ring 20 and the lens bracket 50 is polished so that the surface of the adjusting ring 20 is flat and smooth, which is conducive to the adhesion of glue.
[0039] Based on the further improvement of the above structure, the surface of the adjustment ring 20 near the center ring mouth has a thickened portion 21, and the thickened portion 21 is provided with a notch 211. The notch 211 exposes the threads of the outer peripheral surface of the frame 10 to the outside. After the position of the lens group 30 is adjusted, glue can be poured into the gap between the adjustment ring 20 and the frame 10 through the notch 211, so that the adjustment ring 20 and the frame 10 are fixed, which is convenient for filling with glue.
[0040] Furthermore, the lens structure further includes: a pressure ring 40 for fixing the first lens 31, the pressure ring 40 is fixed to the lens frame 10, and the pressure ring 40 has a pressure ring for fixing the first lens 31, so as to fix the position of the first lens 31, such as Figure 6 shown.
[0041] Based on the further improvement of the above structure, the outer ring of the adjustment ring 20 is provided with a plurality of grooves 22 to facilitate the positioning of the adjustment ring 20 and the lens holder 50. During installation, the grooves 22 help the user to determine the position of the adjustment ring 20. At the same time, during gluing, the adhesive layer will penetrate into the position of the grooves 22, thereby increasing the contact area between the adhesive layer and the adjustment ring 20, and the adhesive layer will form a bulge at the position of the grooves 22, which further plays a role in positioning the adjustment ring 20. There are four grooves 22 equidistantly arranged along the outer circumference of the adjustment ring 20, and the positions of the two grooves 22 are coaxial with each other.
[0042] The embodiment of the utility model further provides a monitoring camera, which adopts any one of the lens structures mentioned above, wherein the lens bracket 50 is connected to the housing of the monitoring camera. The implementation effect of the monitoring camera is consistent with the lens structure and will not be repeated here.
[0043] In the description of the present disclosure, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.
[0044] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.
Claims
1. A lens structure, comprising a lens group (30), characterized in that: The lens structure also includes: The lens frame (10) is a hollow through structure and is located in the middle of the lens structure; An adjusting ring (20), the inner ring surface of the adjusting ring (20) being threadably matched with the outer peripheral surface of the mirror frame (10); The inner annular surface of the adjusting ring (20) and the outer peripheral surface of the mirror frame (10) are both provided with mutually matching threads; The portion of the surface of the adjustment ring (20) close to the central ring opening has a thickened portion (21), and the thickened portion (21) is provided with a notch (211), and the notch (211) exposes the threads of the outer peripheral surface of the lens frame (10) to the outside.
2. The lens structure according to claim 1, characterized in that: The lens group (30) comprises, in order from the object side to the image side: a first lens (31), a second lens (32), a third lens (33), a fourth lens (34), a fifth lens (35) and a sixth lens (36), wherein the fourth lens (34) and the fifth lens (35) are combined into a combined lens; The second lens (32) to the sixth lens (36) are installed in the lens frame (10), and the first lens (31) is installed at the front end of the lens structure.
3. The lens structure according to claim 2, characterized in that: The sixth lens (36) and the second lens (32) are made of plastic lenses; The first lens (31), the third lens (33), the fourth lens (34) and the fifth lens (35) are made of glass lenses.
4. The lens structure according to claim 2, characterized in that: The lens structure further comprises: A pressure ring (40) is used to fix the first lens (31); the pressure ring (40) is fixed to the lens frame (10); and the pressure ring (40) has a pressure ring for fixing the first lens (31).
5. The lens structure according to claim 1, characterized in that: The lens structure further comprises a lens bracket (50), and the lens bracket (50) is connected to the adjustment ring (20) by gluing through a glue layer.
6. The lens structure according to claim 5, characterized in that: The outer ring of the adjusting ring (20) is provided with a plurality of grooves (22) to facilitate the positioning of the adjusting ring (20) and the lens support (50).
7. The lens structure according to claim 6, characterized in that: The contact surface between the adjusting ring (20) and the lens support (50) is polished.
8. A surveillance camera, characterized in that: The surveillance camera adopts the lens structure as claimed in any one of claims 1 to 7.