CN113820909A - Anti-dewing image pickup device and assembling method thereof - Google Patents
Anti-dewing image pickup device and assembling method thereof Download PDFInfo
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- CN113820909A CN113820909A CN202111106173.8A CN202111106173A CN113820909A CN 113820909 A CN113820909 A CN 113820909A CN 202111106173 A CN202111106173 A CN 202111106173A CN 113820909 A CN113820909 A CN 113820909A
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- lens module
- shell
- housing
- waterproof
- light
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 230000005494 condensation Effects 0.000 claims abstract description 14
- 238000009833 condensation Methods 0.000 claims abstract description 14
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 238000003384 imaging method Methods 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000003292 glue Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/08—Waterproof bodies or housings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Studio Devices (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Structure And Mechanism Of Cameras (AREA)
Abstract
An image pickup device preventing dew condensation and an assembling method thereof. The camera device for preventing dewing comprises a shell, a light-transmitting sheet, a lens module and a waterproof sealing piece. The light-transmitting sheet is hermetically combined with the shell. The lens module is accommodated in the shell and is connected to the shell in a pressing manner in a direction parallel to the optical axis of the lens module. The waterproof sealing piece is arranged at the joint of the lens module and the shell to provide sealing connection. And a closed cavity is formed among the light-transmitting sheet, the shell, the waterproof sealing piece and the lens module.
Description
Technical Field
The present invention relates to an image pickup device and an assembling method thereof, and more particularly, to an image pickup device for preventing condensation and an assembling method thereof.
Background
With the development of science and technology, the application of the camera device is more and more diversified. Besides the common ubiquitous hand-held image pickup devices, some image pickup devices are used as surveillance devices, network cameras, vehicle cameras, driving record cameras and the like.
If the water vapor in the environment where the imaging device is located reaches a saturated state in the air, the water vapor is likely to condense on a surface with a low temperature, and dew condensation occurs near the lens. If the dew is generated inside the lens, not only the observation of the image is affected, but also the dew generated inside the lens is difficult to eliminate.
Disclosure of Invention
The invention relates to a camera device for preventing dewing and an assembling method thereof.A closed chamber is formed among a shell, a light-transmitting sheet, a lens module and a waterproof sealing piece to prevent any external redundant water vapor from entering the closed chamber.
According to an aspect of the present invention, there is provided an image pickup device preventing dew condensation, including a housing, a light transmissive sheet, a lens module, and a waterproof seal. The light-transmitting sheet is hermetically combined with the shell. The lens module is accommodated in the shell and is connected to the shell in a pressing manner in a direction parallel to the optical axis of the lens module. The waterproof sealing piece is arranged at the joint of the lens module and the shell to provide sealing connection. And a closed cavity is formed among the light-transmitting sheet, the shell, the waterproof sealing piece and the lens module.
According to another aspect of the present invention, there is provided an assembling method of an image pickup apparatus that prevents dew condensation, including the following steps. And sealing and combining the light-transmitting sheet with the shell. The lens module is connected to the shell in a pressing mode in the direction parallel to the optical axis of the lens module through the waterproof sealing piece, and the waterproof sealing piece is connected to the joint of the lens module and the shell in a sealing mode. And a closed cavity is formed among the light-transmitting sheet, the shell, the waterproof sealing piece and the lens module.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
Fig. 1 is a perspective view of an image pickup apparatus according to an embodiment of the present invention.
Fig. 2 is an exploded view of the image pickup apparatus of fig. 1.
Fig. 3 is a partial exploded view of the image pickup apparatus of fig. 1.
Fig. 4 is a cross-sectional view of the camera device of fig. 1 along section line 4-4'.
Fig. 5 is an assembling method of the image pickup apparatus according to an embodiment of the present invention.
Fig. 6 is an assembling method of an image pickup apparatus according to another embodiment of the present invention.
Detailed Description
The following detailed description of the various embodiments of the invention, taken in conjunction with the accompanying drawings, is provided by way of illustration. Aside from the detailed description, the invention is capable of general implementation in other embodiments and its several details are capable of modifications in various obvious respects, all without departing from the scope of the invention, as set forth in the claims below. In the description of the specification, numerous specific details and embodiments are set forth in order to provide a thorough understanding of the present invention; however, these specific details and implementation examples should not be construed as limiting the invention. In other instances, well-known steps or elements have not been described in detail so as not to unnecessarily obscure the present invention.
Fig. 1 is a perspective view of an image pickup apparatus 100 according to an embodiment of the present invention. Fig. 2 is an exploded view of the image pickup apparatus 100 of fig. 1. Referring to fig. 1 and 2, the image capturing apparatus 100 may include a housing 110, a lens module 120, a waterproof seal 130, a light-transmitting sheet 140, a lens holder 150, and a circuit board 160. The light-transmitting sheet 140 is disposed on the housing 110, and the lens module 120, the waterproof sealing member 130, the lens holder 150 and the circuit board 160 are accommodated in the housing 110.
The lens module 120 may include a lens barrel 121, a lens 122, a plurality of lenses (not shown) disposed in the lens barrel 121, and an image sensor 123. The lens module 120 has an optical axis OA, and receives the light beam (from the object side) transmitted through the light-transmitting sheet 140, and the light beam sequentially passes through the lens 122 and the plurality of lenses and is imaged on the image sensor 123 (imaged on the image side). The image sensor 123 is disposed and electrically connected to the circuit board 160, and is, for example, a Charge Coupled Device (CCD) or a Complementary Metal-Oxide Semiconductor (CMOS) Device.
The lens barrel 121 includes a threaded portion 121T, and the lens barrel 121 can be fixed on the lens base 150 by the threaded portion 121T matching with the threaded portion 150T of the lens base 150. Then, the lens base 150 can be fixed on the circuit board 160 by screws 170. Thereby, the components of the lens module 120 can be reliably aligned with the optical axis OA. After the assembly and alignment of the lens module 120, the lens holder 150 and the circuit board 160 are completed, the circuit board 160 can be fixed to the housing 110 by the screws 180. Thus, the lens module 120, the lens holder 150 and the circuit board 160 can be stably disposed in the housing 110, and supported and carried by the housing 110.
Fig. 3 is a partial device exploded view of the image pickup device 100 of fig. 1, in order to understand its structure from a bottom perspective. Fig. 4 is a cross-sectional view of the image pickup apparatus 100 of fig. 1 taken along a section line 4-4'. Referring to fig. 4, a closed chamber SC is formed between the light-transmitting sheet 140, the housing 110, the waterproof sealing member 130 and the lens module 120. The sealed chamber SC is isolated from the outside (e.g., the external environment of the image capturing apparatus 100 in the use state, or other areas inside the casing 110 except the sealed chamber SC), so that external moisture cannot enter the sealed chamber SC, and the moisture content in the sealed chamber SC is fixed. Therefore, if the temperature of the environment in which the image pickup apparatus 100 is currently located gradually decreases, dew does not occur on the side of the light-transmitting sheet 140 facing the sealed chamber SC. In one embodiment, the Relative Humidity (RH) in the sealed chamber SC is less than 15% at room temperature, so that the sealed chamber SC is relatively dry and will not form condensation on the light-transmitting sheet 140 when low temperature is encountered. In another embodiment, if the relative humidity in the sealed chamber SC is less than 10% at room temperature, the effect of preventing condensation can be further improved.
As shown in fig. 2, 3 and 4, the light-transmissive sheet 140 and the lens module 120 are hermetically combined with the housing 110. In one embodiment, the light-transmitting sheet 140 can be hermetically connected to the housing 110 by a waterproof adhesive (not shown). For example, the housing 110 may have a stepped opening H, and the upper supporting platform 111 is formed in the stepped opening H, as indicated in fig. 2 and 4. The waterproof glue may be coated around the entire upper support platform 111 so that the light-transmitting sheet 140 is hermetically connected to the upper support platform 111. In addition, the waterproof glue may further extend to the side edge 111e of the upper supporting platform 111 to improve the sealing effect.
As shown in fig. 2, 3 and 4, the lens module 120 may be hermetically connected to the housing 110 by a waterproof seal 130. The waterproof seal 130 may be, but is not limited to, rubber, silicone, or waterproof glue. A waterproof seal 130 is provided at the junction of the lens module 120 and the housing 110 to provide a sealed connection. In one embodiment, the waterproof seal 130 may be a continuous sealing ring structure completely surrounding the connection between the lens module 120 and the housing 110 to close the path from other areas inside the housing 110 to the sealed chamber SC. In one embodiment, the waterproof seal 130 is pressed between the housing 110 and the lens module 120 with an interference fit. The lens module 120 is pressed and connected to the housing 110 in a direction parallel to the optical axis OA by the waterproof sealing member 130.
In one embodiment, as shown in fig. 2 and 4, the lens barrel 121 may have a flange 121b, the flange 121b protruding radially; as shown in fig. 3 and 4, the housing 110 may form a lower support platform 112 within the stepped opening H. The waterproof sealing member 130 is disposed between the flange 121b and the lower supporting platform 112, so that the lens module 120 and the housing 110 can be pressed against each other in a direction parallel to the optical axis OA.
Referring to fig. 2, 3 and 4, the upper support platform 111 and the lower support platform 112 face opposite directions, respectively. In addition, the stepped opening H may have a gradually changing inner diameter. In one embodiment, the stepped opening H has a first inner diameter D1 at the upper support platform 111, as indicated by the designation in FIG. 2; the step opening H has a tapered inner diameter from the upper supporting platform 111 to the lower supporting platform 112 (i.e. from the object side to the image side) until the inner diameter is reduced to a minimum inner diameter D3, as shown in fig. 2 and fig. 3; when viewed from the other side, as in FIG. 3, stepped opening H has been reduced to a minimum inner diameter D3 and has a second inner diameter D2 at lower support platform 112 that is greater than minimum inner diameter D3. Here, the outer diameter of the flange 121b of the lens barrel 121 is larger than the minimum inner diameter D3 of the stepped opening H, so that the radially protruding flange 121b can press the waterproof seal 130 against the lower support platform 112.
Fig. 5 shows an assembly method of the image capturing apparatus 100 according to an embodiment of the invention. In this embodiment, the lens module 120, the lens holder 150 and the circuit board 160 can be assembled and aligned first; next, the waterproof sealing member 130 is placed between the lens module 120 and the housing 110, and the circuit board 160 is fixed to the housing 110 by screws 180 (shown in fig. 2), so that the waterproof sealing member 130 is pressed and connected to the housing 110 in a direction parallel to the optical axis OA of the lens module 120 to provide a sealing connection. Then, the connected components and a light-transmitting sheet 140 are placed in a low-humidity box 200, such as a constant temperature and humidity box. An environment having a room temperature and a relative humidity of less than 15% can be maintained in the chamber 200. In a preferred embodiment, the chamber 200 is maintained at room temperature and a relative humidity of less than 10%. Next, the step of hermetically bonding the light-transmitting sheet 140 and the housing 110 is performed under the environmental condition of the box 200, so as to form a sealed chamber SC, as shown in fig. 4, to ensure that the moisture content in the sealed chamber SC is not exposed on the side of the light-transmitting sheet 140 facing the sealed chamber SC.
In another embodiment, as shown in fig. 6, it is an assembling method of an image pickup apparatus 100 according to another embodiment of the present invention. In the present embodiment, the assembly and alignment of the lens module 120, the lens holder 150 and the circuit board 160 are completed first. Then, the lens module 120, the lens holder 150, and the circuit board 160, which are assembled and aligned, are placed in the low humidity box 200 together with the casing 110 and the waterproof sealing member 130. Then, the steps of sealing and connecting the lens module 120, the waterproof sealing member 130 and the housing 110 in the case 200 are performed, for example, the waterproof sealing member 130 is placed between the lens module 120 and the housing 110, the circuit board 160 is fixedly arranged on the housing 110 by screws 180 (shown in fig. 2), and the waterproof sealing member 130 is pressed and connected to the housing 110 in a direction parallel to the optical axis OA of the lens module 120 to provide a sealing connection, so as to form a sealed chamber SC.
As described above, the present invention forms a sealed chamber between the housing, the light-transmitting sheet, the lens module and the waterproof sealing member, so as to prevent any external excess moisture from entering the sealed chamber. Further, the relative humidity in the sealed chamber may be less than 15% at room temperature, and preferably less than 10% at room temperature, to ensure that the moisture content in the sealed chamber does not generate dew on the side of the light-transmitting sheet facing the sealed chamber.
The camera device 100 of the embodiment of the present invention may be, for example, a web camera, and may also be used with the following exemplary devices: the intelligent sound box embedded Mesh wireless router, the android system based high-definition large-screen intelligent teleconference device and the three-frequency high-end XGS-PON home access gateway … supporting 6 GHz.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An imaging device that prevents dew condensation, comprising:
a housing;
a light-transmitting sheet hermetically combined with the shell;
the lens module is accommodated in the shell and is connected to the shell in a pressing manner in a direction parallel to the optical axis of the lens module; and
the waterproof sealing piece is arranged at the joint of the lens module and the shell to provide sealing connection;
wherein, a closed chamber is formed among the light-transmitting sheet, the shell, the waterproof sealing element and the lens module.
2. The imaging device for preventing dew condensation as claimed in claim 1, wherein the relative humidity in the closed chamber is less than 15% at room temperature.
3. The imaging device for preventing dew condensation as claimed in claim 1, wherein the waterproof seal is a continuous seal ring structure.
4. The imaging device for preventing dew condensation as claimed in claim 1, wherein the waterproof seal is pressed tightly between the housing and the lens module in an interference fit manner.
5. The camera device for preventing condensation as claimed in claim 1, wherein the housing has a step opening and forms an upper supporting platform in the step opening, and the transparent sheet is hermetically connected to the upper supporting platform by a waterproof adhesive.
6. The apparatus according to claim 5, wherein the lens module comprises a barrel having a flange, the housing further defines a lower support platform in the step opening, the waterproof seal is disposed between the flange and the lower support platform, and the upper support platform and the lower support platform face opposite directions, respectively.
7. The imaging apparatus for preventing dew condensation as claimed in claim 6, wherein the stepped opening has an inner diameter tapered in a direction from the upper support platform to the lower support platform, and the outer diameter of the flange of the lens barrel is larger than a minimum inner diameter of the stepped opening.
8. A method for assembling an imaging device that prevents dew condensation, comprising:
a light-transmitting sheet is combined with a shell in a sealing way; and
the lens module is connected to the shell in a pressing mode in the direction parallel to the optical axis of the lens module through a waterproof sealing piece, and the waterproof sealing piece is in sealing connection with the connecting position of the lens module and the shell;
wherein, a closed chamber is formed among the light-transmitting sheet, the shell, the waterproof sealing element and the lens module.
9. The method as claimed in claim 8, wherein the step of sealing the transparent sheet to the housing is performed after the step of pressing the lens module against the housing in a direction parallel to the optical axis of the lens module by the waterproof sealing member, and the step of sealing the transparent sheet to the housing is performed in an environment with a relative humidity of less than 15% at room temperature.
10. The method as claimed in claim 8, wherein the step of pressing the lens module against the housing in a direction parallel to the optical axis of the lens module by the waterproof sealing member is performed after the step of sealing the transparent sheet to the housing, and the step of pressing the lens module against the housing in a direction parallel to the optical axis of the lens module by the waterproof sealing member is performed in an environment with a relative humidity of less than 15% at room temperature.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US202163224443P | 2021-07-22 | 2021-07-22 | |
| US63/224,443 | 2021-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113820909A true CN113820909A (en) | 2021-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111106173.8A Pending CN113820909A (en) | 2021-07-22 | 2021-09-22 | Anti-dewing image pickup device and assembling method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113820909A (en) |
| TW (1) | TWI788235B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206977560U (en) * | 2017-08-01 | 2018-02-06 | 深圳市大疆创新科技有限公司 | Lens assembly, capture apparatus and unmanned plane |
| CN208636517U (en) * | 2018-08-10 | 2019-03-22 | 瑞声科技(新加坡)有限公司 | Lens module |
| US20200192192A1 (en) * | 2018-12-18 | 2020-06-18 | Chicony Electronics Co., Ltd. | Camera module |
| CN111566556A (en) * | 2017-12-27 | 2020-08-21 | 日本电产科宝株式会社 | Image pickup apparatus |
| CN211930691U (en) * | 2020-03-31 | 2020-11-13 | 成都鼎桥通信技术有限公司 | Camera lens and camera equipment |
| CN212752380U (en) * | 2020-07-07 | 2021-03-19 | 漳州立达信光电子科技有限公司 | Lens assembly and camera |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM251152U (en) * | 2003-08-29 | 2004-11-21 | Li-Chuan Lin | Protection for camera |
| CN205563044U (en) * | 2016-04-18 | 2016-09-07 | 杭州萤石网络有限公司 | Waterproof cover and moving camera |
| JP2019056852A (en) * | 2017-09-22 | 2019-04-11 | カシオ計算機株式会社 | Waterproof structure and electronic apparatus |
| CN107770430A (en) * | 2017-11-29 | 2018-03-06 | 武汉市哈哈便利科技有限公司 | One kind heats antifog cam device |
| CN117872552A (en) * | 2019-02-26 | 2024-04-12 | 麦克赛尔株式会社 | Lens unit and camera module |
| CN111953885A (en) * | 2020-09-18 | 2020-11-17 | 深圳市易甲文技术有限公司 | Waterproof construction of surveillance camera head |
-
2021
- 2021-09-22 CN CN202111106173.8A patent/CN113820909A/en active Pending
-
2022
- 2022-03-01 TW TW111107343A patent/TWI788235B/en active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206977560U (en) * | 2017-08-01 | 2018-02-06 | 深圳市大疆创新科技有限公司 | Lens assembly, capture apparatus and unmanned plane |
| CN111566556A (en) * | 2017-12-27 | 2020-08-21 | 日本电产科宝株式会社 | Image pickup apparatus |
| CN208636517U (en) * | 2018-08-10 | 2019-03-22 | 瑞声科技(新加坡)有限公司 | Lens module |
| US20200192192A1 (en) * | 2018-12-18 | 2020-06-18 | Chicony Electronics Co., Ltd. | Camera module |
| CN211930691U (en) * | 2020-03-31 | 2020-11-13 | 成都鼎桥通信技术有限公司 | Camera lens and camera equipment |
| CN212752380U (en) * | 2020-07-07 | 2021-03-19 | 漳州立达信光电子科技有限公司 | Lens assembly and camera |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI788235B (en) | 2022-12-21 |
| TW202305489A (en) | 2023-02-01 |
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Application publication date: 20211221 |