WO2023041243A1 - Imagermodul für eine kamera oder einen sensor - Google Patents
Imagermodul für eine kamera oder einen sensor Download PDFInfo
- Publication number
- WO2023041243A1 WO2023041243A1 PCT/EP2022/071654 EP2022071654W WO2023041243A1 WO 2023041243 A1 WO2023041243 A1 WO 2023041243A1 EP 2022071654 W EP2022071654 W EP 2022071654W WO 2023041243 A1 WO2023041243 A1 WO 2023041243A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lens
- housing
- holding element
- imager module
- sensor
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000003384 imaging method Methods 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/52—Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/51—Housings
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
Definitions
- Imager module for a camera or a sensor
- the invention relates to an imager module for a camera or a sensor.
- the preferred areas of application for the camera or sensor are video-based driver assistance systems, industrial and/or security camera applications, and consumer goods, such as smartphones and tablets.
- An imager module for a camera or a sensor usually includes an image sensor arranged on a sensor carrier and a lens with at least one optical lens. Since an axial distance between the lens and the image sensor must be bridged and the lens must be aligned in relation to the image sensor, a holding device can be provided between the lens and the image sensor, which is glued to the lens on the one hand and to the sensor carrier on the other to fix the focused position .
- the objective element group has a tube with at least one lens accommodated therein, the tube being accommodated in a holding device of the image acquisition device, which has a first holding adhesive area for adhering to a sensor carrier and a second holding adhesive area for adhering to the tube.
- adhesive connections have the disadvantage that they tend to swell under the influence of temperature and/or moisture, so that the set focus position is endangered.
- adhesives change their properties as they age. This can also result in defocusing.
- the present invention is therefore concerned with the task of specifying an imager module for a camera or a sensor, which has a focus position that is as stable as possible even under the influence of temperature and/or moisture.
- the imager module should be as simple and thus inexpensive to produce.
- the imager module proposed for a camera or a sensor comprises a housing that is preferably designed in several parts, a sensor carrier which is firmly connected to the housing and on which an image sensor is arranged, a lens and a holding element.
- the lens is held by the holding element and aligned in relation to the image sensor.
- the holding element is arranged outside of the housing and bridges a radial gap between the lens and the housing. Furthermore, the holding element is welded to the lens and/or to the housing, preferably at certain points.
- the usually provided adhesive connection between the objective and the holding element and/or between the holding element and the housing is replaced by a welded connection.
- a stable focus position can be achieved with the help of the welded connection, even under the influence of temperature and/or moisture.
- the welded connection is therefore particularly robust.
- the robustness of the imager module and thus its lifetime increases accordingly.
- the holding element is preferably welded both to the lens and to the housing. Before the retaining element is welded to the lens or the housing--depending on the order of assembly--the lens can be aligned in relation to the image sensor and then fixed by setting the weld seam. Welding seams or welding points are preferably only set at certain points, so that the heat input during welding is minimal.
- the welded connection is preferably produced with the aid of a laser, so that this is a laser welded connection. With the help of the laser, individual spot welds can be set in a targeted manner.
- the holding element is preferably made of metal. This ensures that the holding element can be welded. Furthermore, the retaining element is preferably made from a metal sheet, since this enables the retaining element to be manufactured particularly cost-effectively as a simple stamped part.
- the lens has a metallic outer contour for welding to the holding element, at least in a section that is surrounded by the holding element.
- the metallic outer contour not only ensures that the lens can be welded, but also optimally protects the optics mounted in the lens from external influences - due to the high strength of metal.
- the section of the lens surrounded by the holding element can in particular be cylindrical or essentially cylindrical.
- the metallic outer contour provided for welding to the holding element can have at least one flattened portion, so that a specific angular position of the lens in relation to the housing can be specified. For example, three flat areas arranged at equal angular distances from one another can be provided.
- the holding element is preferably designed as a ring or disk with a central recess for accommodating the lens.
- the holding element can therefore have a very simple geometry, for example by Punching out of a metal sheet, is particularly easy and inexpensive to produce.
- the design as a disc has the advantage that even larger radial gaps between the lens and the housing can be bridged with the aid of the holding element. The disc thus enables improved tolerance compensation.
- the central recess of the holding element advantageously has an inner contour that is adapted to the outer contour of the lens. This applies in particular if the outer contour of the lens is provided with at least one flattening.
- the holding element can thus be tightly connected to the lens.
- the holding element When assembling the imager module, the holding element is preferably first welded to the objective and inserted into the housing together with the objective in such a way that the holding element comes to rest on the outside of the housing. After the lens has been aligned, the holding element can then be welded to the housing so that the focus position of the lens is fixed.
- the housing be made at least partially of metal.
- the measure also contributes to the housing being particularly robust, so that the components accommodated therein are particularly well protected from external influences.
- the housing comprises at least a first housing part for accommodating the sensor carrier and the image sensor, and a second housing part designed as a cover.
- the multi-part design of the housing facilitates the assembly of the imager module. First of all, the sensor carrier including the image sensor can be inserted into the housing and connected to it. The housing can then be closed with the help of the cover.
- the lens is mounted last, preferably together with the holding element, with the lens being aligned in relation to the image sensor. Over the external holding element can then be used to fix the lens in relation to the housing.
- the first and the second housing part are preferably connected in a material and/or form-fitting manner.
- the two housing parts can be glued to one another, for example, for the material connection. In this way, a sealing of the contact area of both housing parts is achieved at the same time.
- the contact area can have a step rabbet, via which the two housing parts engage in one another.
- the second housing part designed as a cover preferably has a recess.
- the radial gap to be bridged by the holding element lies within this recess.
- the inside diameter of the recess is therefore smaller than the outside diameter of the holding element.
- the second housing part designed as a cover preferably has a collar delimiting the radial gap.
- the collar increases the dimension of the radial gap in the axial direction.
- the collar preferably extends into the housing, so that the collar does not impede the contact of the retaining element on the outside of the second housing part.
- a seal is advantageously accommodated in the radial gap. Sealing of the housing in the area of the radial gap is achieved with the aid of the seal.
- the retaining element bridging the radial gap does not have to have a sealing function, so that it can only be welded to the lens and/or to the housing at certain points.
- the seal can be accommodated in a circumferential annular groove of the lens.
- the gasket is then mounted together with the lens.
- the seal is then preferably radially prestressed.
- the collar of the second housing part preferably comes into contact with the seal.
- the collar then compensates for any manufacturing and/or assembly tolerances.
- the objective preferably has at least one optical lens, which forms the optics. Several optical lenses can be combined, for example, in the form of a lens pack. This can be pre-assembled and inserted into the lens as a unit, further simplifying assembly.
- FIG. 1 shows a cut perspective view of an imager module according to a first preferred embodiment of the invention
- Fig. 2 shows a longitudinal section through the imager module of Fig. 1.
- FIG. 3 shows an exploded view of the parts of the imager module of FIG. 1 to be connected prior to mounting the lens
- FIG. 4 shows an exploded view of the preassembled parts of FIG. 3 with further parts of the imager module of FIG. 1 to be connected
- FIG. 5 shows a perspective representation of the imager module of FIG. 1 with indication of the welding points
- FIG. 7b shows a perspective representation of the imager module of FIG. 7b), but after the parts have been rotated in relation to one another.
- FIG. 1 shows a first preferred embodiment of an imager module 1 according to the invention.
- This comprises a housing 2 with a first housing part 2.1 and a second housing part 2.2.
- a sensor carrier 3 with an image sensor 4 arranged thereon is inserted into the first housing part 2.1.
- a lens 5 with at least one lens 13 is arranged above the image sensor 4 and is aligned with respect to the image sensor 4 .
- the objective 5 is held and fixed by a holding element 6 which is arranged outside of the housing 2 and bridges a radial gap 7 between the objective 5 and the housing 2 .
- the radial gap 7 is delimited on the housing side by a collar 11 of the second housing part 2.2 designed as a cover.
- a seal 12 rests against the collar 11 under radial pretension, which is supported on the objective 5 at the other end, so that the radial gap 7 is sealed off.
- the lens 5 is first connected to the holding element 6 and the seal 12 (see FIG. 3).
- the lens 5 has a circumferential annular groove 16 that accommodates the seal 12, so that the seal 12 is connected to the lens 5 not only in a force-fitting manner, but also in a form-fitting manner.
- the holding element 6 is also held on the lens 5 via the sealing ring 12 .
- a rigid connection between the holding element 6 and the lens 5 is preferably produced only after the lens 5 has been inserted into the housing 2 and the lens 5 has been aligned in relation to the image sensor 4 .
- the sensor carrier 3 and the image sensor 4 are inserted into the housing 2, namely into the first housing part 2.1.
- the second housing part 2.2 designed as a cover is then placed on the first housing part 2.1 and connected to the first housing part 2.1 in a material and/or form-fitting manner, in particular glued.
- the pre-assembled unit consisting of lens 5, holding element 6 and seal 12 can be inserted into second housing part 2.2 designed as a cover are, which has a recess 9 for this purpose.
- the recess 9 is limited by the collar 11 to which the seal 12 comes to rest.
- the radial gap 7 between the lens 5 and the housing 2 is covered by the holding element 6 .
- the holding element 6 Since the holding element 6 is fixed neither on the lens 5 nor on the housing 2, the lens 5 can be aligned in multiple axes with respect to the image sensor 4 during assembly.
- the holding element 6 is only permanently fixed to the lens 5 and to the housing 2 when the focus position of the lens 5 has been established.
- the fixation can be achieved in particular with the aid of individual spot welds 14, which are preferably distributed uniformly over the circumference (see FIG. 5).
- FIGS. 7a and 7b) show a lens 5 which has an outer contour 8 with flattened areas 15 in the area of the holding element 6 .
- the holding element 6 has an inner contour 10 which is adapted to the outer contour 8 of the lens 5 (see FIG. 6a)).
- the holding element 6 can assume a different angular position in relation to the objective 5 by rotating it, so that a better tolerance compensation is created (see FIG. 6b)).
- contact points are created in which the welding points 14 can then be set (see FIGS. 7a) and 7b)).
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Lens Barrels (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020247011979A KR20240068682A (ko) | 2021-09-17 | 2022-08-02 | 카메라 또는 센서를 위한 이미저 모듈 |
CN202280062157.XA CN117941365A (zh) | 2021-09-17 | 2022-08-02 | 用于摄像头或者传感器的成像模块 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021210307.3 | 2021-09-17 | ||
DE102021210307.3A DE102021210307A1 (de) | 2021-09-17 | 2021-09-17 | Imagermodul für eine Kamera oder einen Sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023041243A1 true WO2023041243A1 (de) | 2023-03-23 |
Family
ID=83148987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/071654 WO2023041243A1 (de) | 2021-09-17 | 2022-08-02 | Imagermodul für eine kamera oder einen sensor |
Country Status (4)
Country | Link |
---|---|
KR (1) | KR20240068682A (de) |
CN (1) | CN117941365A (de) |
DE (1) | DE102021210307A1 (de) |
WO (1) | WO2023041243A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019200061A1 (de) | 2019-01-04 | 2020-07-09 | Robert Bosch Gmbh | Objektivelementgruppe für eine die Objektivelementgruppe und einen Sensorträger umfassende Bilderfassungsvorrichtung und Bilderfassungsvorrichtung |
DE102019213798A1 (de) * | 2019-09-11 | 2021-03-11 | Robert Bosch Gmbh | Verfahren zum Fügen eines Kameraobjektivs an einem Objektivhalter |
DE102019216287A1 (de) * | 2019-10-23 | 2021-04-29 | Robert Bosch Gmbh | Verfahren zur Herstellung eines Kameramoduls, Kameramodul |
EP3516859B1 (de) * | 2016-09-21 | 2021-08-18 | First Sensor Mobility GmbH | Gehaustes kamerasystem, verfahren und vorrichtung zu dessen herstellung |
-
2021
- 2021-09-17 DE DE102021210307.3A patent/DE102021210307A1/de active Pending
-
2022
- 2022-08-02 KR KR1020247011979A patent/KR20240068682A/ko unknown
- 2022-08-02 CN CN202280062157.XA patent/CN117941365A/zh active Pending
- 2022-08-02 WO PCT/EP2022/071654 patent/WO2023041243A1/de active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3516859B1 (de) * | 2016-09-21 | 2021-08-18 | First Sensor Mobility GmbH | Gehaustes kamerasystem, verfahren und vorrichtung zu dessen herstellung |
DE102019200061A1 (de) | 2019-01-04 | 2020-07-09 | Robert Bosch Gmbh | Objektivelementgruppe für eine die Objektivelementgruppe und einen Sensorträger umfassende Bilderfassungsvorrichtung und Bilderfassungsvorrichtung |
DE102019213798A1 (de) * | 2019-09-11 | 2021-03-11 | Robert Bosch Gmbh | Verfahren zum Fügen eines Kameraobjektivs an einem Objektivhalter |
DE102019216287A1 (de) * | 2019-10-23 | 2021-04-29 | Robert Bosch Gmbh | Verfahren zur Herstellung eines Kameramoduls, Kameramodul |
Also Published As
Publication number | Publication date |
---|---|
CN117941365A (zh) | 2024-04-26 |
KR20240068682A (ko) | 2024-05-17 |
DE102021210307A1 (de) | 2023-03-23 |
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