CCD and CMOS camera vacuum self-sealing device
By designing a vacuum self-enclosing device using metal elastic sheets on CCD and CMOS cameras, the problem of difficult vacuum self-enclosing in the prior art is solved, and an automated vacuum self-enclosing is realized, which is suitable for micro-mechanical structures.
Patent Information
- Application Number
- CN202421324153.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-11
AI Technical Summary
The prior art is difficult to effectively realize vacuum self-closing in CCD and CMOS cameras, especially when installing mechanical valves on micro-mechanical structures, there are problems with volume and installation difficulty.
A vacuum self-sealing device with a simple structure is designed, using stainless steel metal elastic sheets as valves, and using the principle of metal pressure deformation, the metal elastic sheets bent to the inner cavity and sealed after vacuuming, and automatically close the inner cavity of the camera.
It realizes automatic vacuum self-enclosure on CCD and CMOS cameras, effectively maintaining the vacuum degree in the camera, suitable for micro-mechanical structures, with a small structure and strong applicability.
Smart Images
Figure CN222690036U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of cameras, and particularly relates to a vacuum self-sealing device for CCD and CMOS cameras. Background Art
[0002] A CCD camera is a camera that uses a charge-coupled device (CCD) as a photoelectric conversion element. CCD is a semiconductor device that converts light signals into charge signals and converts the charge signals into images by reading them line by line. CCD cameras are often used in applications that require high-quality images and low noise, such as astronomy, biomedicine, and other fields.
[0003] A CMOS camera is a digital camera that uses a CMOS (complementary metal oxide semiconductor) sensor. A CMOS sensor is an image sensor integrated on the same chip that can convert light signals into electrical signals and convert them into digital images through a digital signal processor. Compared to traditional CCD (charge-coupled device) sensors, CMOS sensors have lower power consumption, faster reading speeds, and higher integration, so they are widely used in digital cameras.
[0004] CMOS cameras have many advantages, including faster shooting speed, lower power consumption, higher sensitivity and better noise control. They are commonly used in consumer digital cameras, smartphone cameras, surveillance cameras and medical imaging equipment.
[0005] In order to reduce noise, scientific-grade CCD cameras and CMOS cameras need to operate at low temperatures, so the inside of the CCD camera and CMOS camera needs to be evacuated. Usually, after the vacuum device is evacuated, a mechanical valve is used to close the connection between the vacuum chamber and the outside. However, the mechanical valve is relatively large, and it is difficult to install such a valve on the tiny mechanical structure of CCD and CMOS cameras.
[0006] Therefore, it is necessary to design a vacuum sealing structure with a simple structure that is easy to install on CCD and CMOS cameras. Utility Model Content
[0007] The technical problem to be solved by the utility model is to provide a vacuum self-sealing device for CCD and CMOS cameras in view of the deficiencies of the above-mentioned prior art.
[0008] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:
[0009] The vacuum self-sealing device of CCD and CMOS camera comprises a CCD and CMOS camera shell, wherein a camera inner cavity is arranged in the CCD and CMOS camera shell, an inner cavity opening is opened at the front end of the camera inner cavity, and a self-sealing device is installed on the outer side of the inner cavity opening of the CCD and CMOS camera shell. The self-sealing device comprises a closed shell, a partition ring and a metal elastic sheet. The partition ring is installed in the closed shell to separate the space in the closed shell into a vacuum chamber and a normal pressure chamber. Both the vacuum chamber and the normal pressure chamber are connected with the camera inner cavity. The metal elastic sheet is installed on the partition ring, and the metal elastic sheet seals and isolates the normal pressure chamber from the camera inner cavity. The normal pressure chamber is located on one side of the metal elastic sheet, and the camera inner cavity is located on the other side of the metal elastic sheet. The metal elastic sheet and the inner cavity opening are in clearance fit. When an external negative pressure source vacuumizes the camera inner cavity through the vacuum chamber, the metal elastic sheet bends toward the inner cavity opening and seals the inner cavity opening.
[0010] To optimize the above technical solutions, the specific measures taken also include:
[0011] The above-mentioned metal elastic sheet is a stainless steel elastic sheet.
[0012] The above-mentioned closed shell is an annular shell that penetrates from front to back. The front side of the closed shell is provided with a shell front end face, and the rear side of the closed shell is provided with a shell rear end face. The shell front end face is an annular plate with a through cavity in the middle, and the shell rear end face is fixedly and sealedly connected to the CCD and CMOS camera shells.
[0013] The partition ring is a ring body extending forward and backward, the front end of the partition ring is sealed and fixedly connected to the inner ring of the front end surface of the shell, and the rear end extends to the vicinity of the inner cavity opening.
[0014] The partition ring is coaxially arranged with the inner cavity opening, the radius of the partition ring is larger than the radius of the inner cavity opening, the partition ring and the closed shell, the front end face of the shell, and the rear end face of the shell together form a vacuum chamber, and the inner cavity of the partition ring is a normal pressure chamber.
[0015] A vacuum port is provided on the front end surface of the shell, and the vacuum port is used to be connected to an external negative pressure source.
[0016] The above-mentioned closed shell is made of metal material.
[0017] The above-mentioned metal elastic sheet is a circular sheet, the outer edge of the metal elastic sheet is a straight plate portion, the middle portion of the metal elastic sheet is an arc portion, and the straight plate portion and the arc portion are formed integrally.
[0018] The straight plate portion of the metal elastic sheet is fixedly connected to the rear end of the partition ring by gluing.
[0019] The housings of the CCD and CMOS cameras are made of metal materials.
[0020] The utility model has the following advantages:
[0021] 1. The utility model has a simple structure, with an elastic metal sheet as a valve, and uses the principle of metal pressure deformation. After the CCD and CMOS cameras are evacuated, the metal elastic sheet bends toward the inner cavity opening and seals the inner cavity opening, thereby automatically closing the camera cavity, blocking the flow of the camera cavity and the outside air, and effectively maintaining the vacuum degree in the CCD and CMOS cameras.
[0022] 2. The vacuum self-sealing device of the utility model has a compact structure and the valve opening and closing does not require any operation, so it is very suitable for application in CCD and CMOS cameras. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the structure of the vacuum self-sealing device of CCD and CMOS camera before evacuation;
[0024] Figure 2 yes Figure 1 A magnified view of the structure of part A;
[0025] Figure 3 It is a schematic diagram of the structure of the vacuum self-sealing device of CCD and CMOS camera after evacuation;
[0026] Figure 4 yes Figure 3 A magnified view of the structure of part B;
[0027] Figure 5 yes Figure 1 Left view;
[0028] Figure 6 yes Figure 1 Right view of .
[0029] The reference numerals in the drawings are: CCD and CMOS camera housing 1, camera inner cavity 11, inner cavity opening 12, self-sealing device 2, closed housing 21, housing front end face 21a, housing rear end face 21b, vacuum port 21c, partition ring 22, metal elastic sheet 23, vacuum chamber 24, normal pressure chamber 25. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.
[0031] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.
[0032] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.
[0033] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the" and the like involved in this application do not indicate a quantitative limitation, and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or units (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" / "several" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships, for example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.
[0034] The vacuum self-sealing device for CCD and CMOS cameras of the utility model is as follows: Figure 1-2 As shown in 5-6, it mainly includes structures such as a closed shell 21, a partition ring 22, and a metal elastic sheet 23.
[0035] The closed shell 21 is an annular shell that penetrates from front to back. The front side of the closed shell 21 is provided with a shell front end face 21a, and the rear side of the closed shell 21 is provided with a shell rear end face 21b. The shell rear end face 21b is fixedly and sealedly connected to the CCD and CMOS camera shell 1, and a vacuum port 21c is opened on the shell front end face 21a.
[0036] The partition ring 22 is a ring body extending forward and backward, the front end of the partition ring 22 is sealed and fixedly connected to the inner ring of the front end surface 21a of the shell, and the rear end extends to the vicinity of the inner cavity opening 12. The partition ring 22 is coaxially arranged with the inner cavity opening 12, and the radius of the partition ring 22 is about 5mm larger than the radius of the inner cavity opening 12.
[0037] The metal elastic sheet 23 is a circular metal sheet. The outer edge of the metal elastic sheet 23 is a flat plate, and the middle part is elastic and is an arc-shaped sheet. The elastic deformation threshold of the metal elastic sheet 23 needs to be determined according to the pressure difference acting on both sides of the metal elastic sheet 23 after vacuuming. The specific requirement is that when the camera inner cavity 11 is vacuumed to a predetermined pressure, the pressure difference acting on both sides of the metal elastic sheet 23 can just cause the metal elastic sheet 23 to deform. Figure 1-2 The state shown changes to Figure 3-4 The elastic deformation threshold of the metal elastic sheet 23 is achieved by changing the thickness of the arc-shaped portion of the metal elastic sheet 23. Since the thickness of the metal elastic sheet 23 made of different metals is different, the specific thickness of the metal elastic sheet 23 needs to be obtained through multiple experiments in actual applications. Generally speaking, the thickness of the metal elastic sheet 23 is between 0.3-1mm. The straight plate portion of the metal elastic sheet 23 is fixedly connected to the rear end of the partition ring 22 by gluing.
[0038] When the vacuum self-sealing device for CCD and CMOS cameras of the utility model is used, it is only necessary to connect the external negative pressure source with the vacuum port 21c to evacuate the vacuum chamber 24 and the camera inner chamber 11. During this process, the atmospheric pressure of the normal pressure chamber 25 remains unchanged, resulting in a gradual change in the air pressure on both sides of the metal elastic sheet 23. Finally, the metal elastic sheet 23 is deformed under the action of the air pressure. Figure 1-2 The state shown changes to Figure 3-4 In the state shown, the deformed metal elastic sheet 23 completely seals the camera cavity 11 and keeps the camera cavity 11 sealed under the action of atmospheric pressure, so that the camera cavity 11 is in a low pressure state, thereby ensuring that the low temperature environment inside the CCD camera and the CMOS camera can be maintained for a long time.
[0039] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.
Claims
1. A CCD and CMOS camera vacuum self-sealing device, comprising a CCD and CMOS camera housing (1), wherein a camera inner cavity (11) is arranged in the CCD and CMOS camera housing (1), and the CCD and CMOS camera housing (1) is provided with an inner cavity opening (12) at the front end of the camera inner cavity (11), wherein: The CCD and CMOS camera housing (1) is provided with a self-sealing device (2) outside the inner cavity opening (12), the self-sealing device (2) comprising a closed housing (21), a partition ring (22) and a metal elastic sheet (23), the partition ring (22) being installed in the closed housing (21) to separate the space in the closed housing (21) into a vacuum chamber (24) and a normal pressure chamber (25), the vacuum chamber (24) and the normal pressure chamber (25) both being in communication with the camera inner cavity (11), the metal elastic sheet (23) The camera inner cavity (11) is installed on the partition ring (22), and the metal elastic sheet (23) seals and isolates the normal pressure cavity (25) from the camera inner cavity (11), and the normal pressure cavity (25) is located on one side of the metal elastic sheet (23), and the camera inner cavity (11) is located on the other side of the metal elastic sheet (23). The metal elastic sheet (23) and the inner cavity opening (12) are clearance-matched. When the external negative pressure source evacuates the camera inner cavity (11) through the vacuum chamber (24), the metal elastic sheet (23) bends toward the inner cavity opening (12) and seals the inner cavity opening (12).
2. The vacuum self-sealing device for CCD and CMOS cameras according to claim 1, characterized in that: The metal elastic sheet (23) is a stainless steel elastic sheet.
3. The vacuum self-sealing device for CCD and CMOS cameras according to claim 2, characterized in that: The closed shell (21) is an annular shell that penetrates from front to back. The front side of the closed shell (21) is provided with a shell front end face (21a), and the rear side of the closed shell (21) is provided with a shell rear end face (21b). The shell front end face (21a) is an annular plate with a through cavity in the middle. The shell rear end face (21b) is fixedly and sealedly connected to the CCD and CMOS camera shell (1).
4. The vacuum self-sealing device for CCD and CMOS cameras according to claim 3, characterized in that: The partition ring (22) is a ring body extending forward and backward. The front end of the partition ring (22) is sealed and fixedly connected to the inner ring of the front end surface (21a) of the shell body, and the rear end extends to the vicinity of the inner cavity opening (12).
5. The vacuum self-sealing device for CCD and CMOS cameras according to claim 4, characterized in that: The partition ring (22) is coaxially arranged with the inner cavity opening (12); the radius of the partition ring (22) is greater than the radius of the inner cavity opening (12); the partition ring (22) and the closed shell (21), the front end surface (21a) of the shell, and the rear end surface (21b) of the shell together form a vacuum chamber (24); and the inner cavity of the partition ring (22) is a normal pressure chamber (25).
6. The vacuum self-sealing device for CCD and CMOS cameras according to claim 5, characterized in that: A vacuum port (21c) is provided on the front end surface (21a) of the shell, and the vacuum port (21c) is used to be connected to an external negative pressure source.
7. The vacuum self-sealing device for CCD and CMOS cameras according to claim 1, characterized in that: The closed shell (21) is made of metal material.
8. The vacuum self-sealing device for CCD and CMOS cameras according to claim 6, characterized in that: The metal elastic sheet (23) is a circular sheet, the outer edge of the metal elastic sheet (23) is a straight plate portion, the middle portion of the metal elastic sheet (23) is an arc portion, and the straight plate portion and the arc portion are integrally formed.
9. The vacuum self-sealing device for CCD and CMOS cameras according to claim 8, characterized in that: The straight plate portion of the metal elastic sheet (23) is fixedly connected to the rear end of the partition ring (22) by gluing.
10. The vacuum self-sealing device for CCD and CMOS cameras according to claim 1, characterized in that: The CCD and CMOS camera housing (1) is made of metal material.