CN2632696Y - Optical module for digital camera - Google Patents
Optical module for digital camera Download PDFInfo
- Publication number
- CN2632696Y CN2632696Y CN 03264944 CN03264944U CN2632696Y CN 2632696 Y CN2632696 Y CN 2632696Y CN 03264944 CN03264944 CN 03264944 CN 03264944 U CN03264944 U CN 03264944U CN 2632696 Y CN2632696 Y CN 2632696Y
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- China
- Prior art keywords
- optical module
- substrate
- bearing seat
- digital camera
- lens bearing
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- Camera Bodies And Camera Details Or Accessories (AREA)
- Lens Barrels (AREA)
Abstract
The utility model relates to an optical module used for the digital camera, which comprises a basal plate, a light sensing device used for sensing light positioned on the basal plate, a camera lens bearing seat sleeved on the light sensing device, a shielding device arranged between the upper side of the basal plate and the camera lens bearing seat, an optical camera lens positioned on the camera lens bearing seat for focusing the light on the light sensing device, at least one snail like fixing component, and a cushion mat arranged between the snail head of the snail and the basal plate. The light sensing device only receives the light from the optical camera lens, and the cushion mat can reduce the impact for the snail head of the snail to the basal plate.
Description
Technical field
The utility model relates to a digital camera, relate in particular to a kind of optical module that is used for digital camera, photosensitive device in this optical module only receives the light that optical lens transmitted in the optical module, and the cushion pad in the optical module can reduce the screw terminal of the screw in the optical module to the bump that substrate caused in the optical module.
Background technology
The rise at networking has driven the fast development of digital camera, and the image that the user of digital camera can be mutually taken with this teaching machine is sent to the friend in a distant place via the networking.Digital camera is to utilize the optical lens and the photosensitive device that are arranged in the digital camera to extract image, optical lens in the digital camera and photosensitive device are essential properly to be installed, just the optical axis of this optical lens must be parallel to the normal of this photosensitive device, and so just the image that digital camera is extracted has perfect quality.
With reference to figure 1 and Fig. 2, Fig. 1 is the front view of a known digital camera 10, and Fig. 2 is digital camera 10 a shown in Figure 1 diagrammatic cross-section along a tangent line X-X '.Digital camera 10 comprises a housing 12 and an optical module 13, optical module 13 comprises a printed circuit board (PCB) 14, it is located in the housing 12, a complementary metal oxide semiconductor detector (complementarymetal oxidesemiconductor sensor, CMOS sensor is hereinafter to be referred as CMOS) 16 be arranged on the printed circuit board (PCB) 14, a lens bearing seat 18 is positioned that CMOS16 goes up, an optical lens 20 is arranged on the lens bearing seat 18.The light focusing of the image that optical lens 20 is taken 10 desires of digital camera is to CMOS16, image light after the focusing that CMOS16 then will be transmitted by optical lens 20 places converts corresponding electronic signal to, this electronic signal can be sent to the electronic component (as processor etc.) that is positioned on the printed circuit board (PCB) 18 via printed circuit board (PCB) 18, further handles treating.
When the lens bearing seat in the digital camera 10 18 was positioned on the CMOS16 exactly, the optical axis 22 of camera lens 20 was parallel to the normal 24 of CMOS16.Because the lens bearing seat 18 in the digital camera 10 only is positioned on the CMOS16 in the mode of interfering, therefore when digital camera 10 was subjected to external force collision, lens bearing seat 18 was easy to depart from CMOS16.When lens bearing seat is positioned CMOS16 no longer exactly and goes up, as previously mentioned, the optical axis 22 of camera lens 20 also will no longer be parallel to the normal 24 of CMOS16, so will reduce the quality of the image that digital camera 10 extracted.Moreover, because the lens bearing seat 18 in the optical module 13 is not adjacent to printed circuit board (PCB) 14, therefore light can be by gap location (locating shown in the arrow among Fig. 2) diffusion between lens bearing seat 18 and the printed circuit board (PCB) 14 to CMOS16, and and then has influence on the normal operation of CMOS16.
With reference to figure 3 and Fig. 4, Fig. 3 is the front view of another known digital camera 30, and Fig. 4 is digital camera 30 a shown in Figure 3 diagrammatic cross-section along a tangent line Y-Y '.The structure of digital camera 30 is identical substantially with the structure of digital camera 10, and difference wherein only is that the optical module 33 interior lens bearing seat 38 in the digital camera 30 are contacted with the printed circuit board (PCB) 34 in the optical module 33.Like this, the outer light of digital camera 30 just can be via the adjoiner diffusion of lens bearing seat 38 and substrate 14 extremely on the CMOS36 of mutually digital machine 30.Yet, because the lens bearing seat 38 of digital camera 30 still adopts the mode of interfering to be positioned on the CMOS36, therefore any vibrations for digital camera 30 all might influence the location between lens bearing seat 38 and the CMOS36, and and then have influence on the quality of the image that digital camera 30 extracted.
With reference to figure 5 and Fig. 6, Fig. 5 is the front view of another known digital camera 50, and Fig. 6 is digital camera 50 a shown in Figure 5 diagrammatic cross-section along a tangent line Z-Z '.The structure of digital camera 50 is identical substantially with the structure of digital camera 30, difference wherein only is that digital camera 50 also comprises a stationary installation 68 (for example screw), is used for lens bearing seat 58 with digital camera 50 and is fixed on printed circuit board (PCB) 54 in the digital camera 50.Like this, light except digital camera 50 can not be adjacent to printed circuit board (PCB) 54 places (arrow as shown in Figure 2) diffusion outside the CMOS56 of digital camera 50 goes up via lens bearing seat 58, and any vibrations for digital camera 50 can not influence the location between lens bearing seat 58 and the CMOS56 yet.
In digital camera shown in Figure 6 50, optical axis 62 hypothesis of camera lens 60 are parallel to the normal 64 of CMOS56.Yet, in the making and assembling process of digital camera 50, often exist some parameters can make the optical axis 62 of camera lens 60 can't be parallel to the normal 64 of CMOS56.For instance, in the manufacture process of optical module 53, because the printed circuit board (PCB) 54 in the optical module 53 must could be welded on optical module 53 required associated electronic components when operating on the printed circuit board (PCB) 54 by heating arrangements such as overflow stoves, and the high heat that the overflow stove is sent can make printed circuit board (PCB) 54 produce some distortion unavoidably, the distortion of printed circuit board (PCB) 54 is enough to make that the lens bearing seat 58 that is adjacent to printed circuit board (PCB) 54 can't be positioned at camera lens on the CMOS56 exactly, therefore, the quality of the taken image of digital camera 50 just is affected inevitably.
These parameters comprise that also different being used for of thickness is connected electrically in tin ball on the printed circuit board (PCB) 54 with CMOS56.With reference to figure 7, Fig. 7 is the thickness asynchronous diagrammatic cross-section of digital camera 50 at the tin ball 59 that CMOS56 is electrically connected to printed circuit board (PCB) 54.In digital camera shown in Figure 7 50, owing to CMOS56 is electrically connected to the thickness difference of the tin ball 59 of printed circuit board (PCB) 54, therefore when lens bearing seat 58 was placed on the CMOS56, the lens bearing seat of locating shown in the arrow A 58 was touched printed circuit board (PCB) 54 than the lens bearing seat of locating shown in the arrow B 58 in advance.Like this, after stationary installation 68 was fixed on printed circuit board (PCB) 54 with lens bearing seat 58, the optical axis 62 of camera lens 60 just can not be parallel to the normal 64 of CMOS56.
Have again, even if the printed circuit board (PCB) 54 in the optical module 50 is without any buckling deformation, or the thickness of tin ball 59 that CMOS56 is electrically connected to printed circuit board (PCB) 54 is equal fully, when the screw in the optical module 50 68 is fixed on lens bearing seat 58 on the printed circuit board (PCB) 54, the screw terminal of screw 68 directly clashes into printed circuit board (PCB) 54, also can influence the positioning relation between lens bearing seat 58 and the CMOS56 probably, and the quality of the image that further has influence on digital camera and extracted.
Novel content
Therefore fundamental purpose of the present utility model is to provide a kind of optical module that is used for digital camera, it receives only the light that optical lens transmitted in this optical module, to solve the shortcoming on can be from the gap diffusion between lens bearing seat and substrate to photosensitive device of light in the known technology.
Another purpose of the present utility model is to provide a kind of optical module that is used for digital camera, the screw terminal that cushion pad in it can reduce screw effectively is to impact that substrate caused, therefore can solve and to take into account this lens bearing seat in the known technology and can be positioned on the photosensitive device exactly, and this lens bearing seat can be fixed in the shortcoming on this substrate.
According to the utility model, it discloses a kind of optical module that is used for digital camera, and this optical module comprises that a substrate, is arranged on the photosensitive device, that is used for responding to light on this substrate and is sheathed on lens bearing seat, on this photosensitive device and is placed on masking device, between the bottom of the upside of this substrate and this lens bearing seat and is arranged on and is used on this lens bearing seat the optical lens of light focusing to this photosensitive device.The photosensitive device of this optical module only can receive the light that transmits from this optical lens.
Described optical module also comprise at least one with the mode of passing substrate with lens bearing seat be fixed on the substrate as being used for reducing the cushion pad of the screw terminal of screw between the stationary installation of screw and at least one screw terminal that is arranged at this screw and substrate to the bump that substrate was caused.
The elasticity coefficient of above-mentioned cushion pad is less than the elasticity coefficient of this masking device.
Because masking device of the present utility model can prevent effectively that light is incident upon on this photosensitive device from the gap between lens bearing seat and substrate, therefore can guarantee the quality of the image that optical module of the present utility model extracts.Be arranged at the screw terminal of this screw and screw terminal that the cushion pad between substrate can reduce screw effectively to the impact that substrate caused, therefore can guarantee that lens bearing seat is located exactly and is fixed on the substrate.In addition, because the elasticity coefficient of cushion pad is less than the elasticity coefficient of masking device, therefore, still can not hinder positioning relation between lens bearing seat and photosensitive device as the substrate of the warpage parameters such as tin ball different with thickness.
Description of drawings
Fig. 1 is the front view of known digital camera;
Fig. 2 is digital camera shown among Fig. 1 diagrammatic cross-section along a tangent line X-X ';
Fig. 3 is the front view of another known digital camera;
Fig. 4 is digital camera shown among Fig. 3 diagrammatic cross-section along a tangent line Y-Y ';
Fig. 5 is the front view of another known digital camera;
Fig. 6 is digital camera shown among Fig. 5 diagrammatic cross-section along a tangent line Z-Z ';
Fig. 7 is the asynchronous diagrammatic cross-section of thickness of the tin ball in the digital camera shown among Fig. 5;
Fig. 8 is the front view of the utility model digital camera;
Fig. 9 is digital camera shown among Fig. 8 diagrammatic cross-section along a tangent line W-W ';
Figure 10 is the diagrammatic cross-section of another the utility model digital camera.
Embodiment
With reference to figure 8 and Fig. 9, Fig. 8 one comprises the front view of the digital camera 70 of the utility model one optical module 73, and Fig. 9 is digital camera 70 a shown in Figure 8 diagrammatic cross-section along a tangent line W-W '.Digital camera 70 also comprises a housing 72.Optical module 73 comprises a substrate 74, is arranged in the housing 72, a photosensitive device 76 is arranged on the substrate 74, a lens bearing seat 78 is set on the photosensitive device 76, a camera lens 80 is arranged on the lens bearing seat 78.The light focusing of the image that camera lens 80 is taken 70 desires of digital camera is to photosensitive device 76, image light after the focusing that 76 of photosensitive devices will be transmitted by camera lens 80 places converts corresponding electronic signal to, this electronic signal can be sent to the electronic component (as processor etc.) that is positioned on the substrate 78 via substrate 78, to treat further processing.Substrate 78 can be a printed circuit board (PCB), and photosensitive device 76 can be a complementary metal oxide semiconductor detector.
It should be noted that lens bearing seat 78 and substrate 74 in the optical module 73 of the present utility model preset distance of being separated by, just exist the gap the same between the optics load bearing seat 18 in the optical module 10 and the substrate 14 as is well known.Optical module 73 of the present utility model also comprises a masking device 86, is placed on the position that is adjacent on the substrate 74 around the photosensitive device 76, be used for preventing light from diffusion between the upside of the bottom of lens bearing seat 78 and substrate 74 to photosensitive device 76.Masking device 86 can be a spring-mounted shielding device, and this spring-mounted shielding device can be a rubber blanket.The thickness of masking device 86 is slightly larger than this preset distance, so that the photosensitive device 76 in the optical module 73 only receives the light that is transmitted from camera lens 80.
Optical module 73 also comprises a stationary installation, is used for lens bearing seat 78 is fixed on substrate 74.In the present embodiment, this stationary installation comprises at least one screw 88 and at least one cushion pad 90, wherein screw 88 is fixed on lens bearing seat 78 on the substrate 74 in the mode of passing substrate 74, cushion pad 90 is arranged between the screw terminal 92 and substrate 74 of screw 88, is used for reducing the bump that 92 pairs of substrates 74 of screw terminal of screw 88 are caused.In the embodiment shown in fig. 9, screw 88 is in the mode of the screw 94 of precession lens bearing seat 74 after the hole (not shown) of passing correspondence on cushion pad 90 and the substrate 74 in regular turn, and lens bearing seat 74 is fixed on the substrate 74.The screw terminal 92 of screw 88 is squeezed in cushion pad 90 between screw terminal 90 and the substrate 74, and extruded cushion pad 90 can prevent to produce directly bump substrate 74 caused locating bias of coping screw head 90 between optical lens 80 and photosensitive device 76.
The material of cushion pad 90 can be rubber blanket or spring, and the structure of cushion pad 90 in the form of a ring single chip architecture maybe can comprise the multiple-piece structure of a plurality of buffer cells.No matter but which kind of structure cushion pad 90 is, cushion pad 90 all must be corresponding to the screw 94 of lens bearing seat 78, that is to say, comprise four screws 94 as lens bearing seat 78, certainly this stationary installation also should correspondingly comprise four screws 88, as cushion pad 90 is the multiple-piece structure, then each buffer cell of being comprised of cushion pad 90 all need to be separately positioned on four screws 88 of this stationary installation screw terminal 92, and substrate 74 between the hole corresponding to screw 88.
The stationary installation that is used for lens bearing seat 78 is fixed on the substrate 74 also can be an elastic fastening hook.With reference to Figure 10, Figure 10 is the synoptic diagram of another optical module 113 of the utility model.The structural similarity of optical module 113 is in the structure of the optical module shown in Fig. 9 73, difference between optical module 113 and the optical module 73 only is, the stationary installation of optical module 113 is one group of elastic fastening hook 114, and the two ends of each elastic fastening hook 114 all fasten the groove 116 and the cushion pad 90 that is placed on substrate 74 belows on the optics load bearing seat 118 of optical module 113 respectively.Certainly, be the four-piece type structure as cushion pad 90, this group elastic fastening hook 114 also correspondingly comprises four elastic fastening hooks 114.
For the lens bearing seat 78 and 118 in optical module 73 and 113 can be fixed on the substrate 74 comparatively securely, the elasticity coefficient of above-mentioned masking device 86 needs the elasticity coefficient less than cushion pad 90.Like this, even if the optical axis of the camera lens 80 in the optical module 73 and 113 temporarily can not be parallel to the normal of photosensitive device 76 because of some parameter (the tin balls that the substrate of warpage is different with thickness), optical module 73 and 113 still can be because of the difference between the elasticity coefficient of masking device 86 and cushion pad 90, utilize stationary installation (screw 88 and elastic fastening hook 114) that lens bearing seat 78 and 118 is fixed on the substrate 74, and the optical axis of the camera lens 80 in optical module 73 and 113 also thereby be parallel to the normal of photosensitive device 76.
Compare with known optical module 13,33 and 53, masking device 86 in the optical module 73 of the present utility model and 113 can prevent light from lens bearing seat 78,118 and 74 diffusions of substrate to photosensitive device 76, to guarantee the quality of optical module 73 of the present utility model and 113 images that extracted.In addition, be arranged at the cushion pad 90 of 74 of the screw terminal 92 end of cushion pad 90 (or prop up on the grab 114) of screw 88 and substrates, can reduce the impact that 92 pairs of substrates 74 of screw terminal of screw 88 are caused effectively, therefore can guarantee that lens bearing seat 78,118 is located exactly and is fixed on the substrate 74.In addition, because the elasticity coefficient of cushion pad 90 is less than the elasticity coefficient of masking device 86, so some are as the substrate and the different parameters such as tin ball of thickness of warpage, still can not hinder the positioning relation of 76 of lens bearing seat 78,118 and photosensitive devices.
The above only is preferred embodiment of the present utility model, and all equivalent variations and modifications of being made according to the utility model claim all should belong within the utility model protection domain.
Claims (19)
1. an optical module that is used for digital camera is characterized in that, comprising: a substrate; One photosensitive device is arranged on the described substrate, is used to respond to light; One lens bearing seat is set on the described photosensitive device; One masking device is placed between the bottom of the upside of described substrate and described lens bearing seat; And an optical lens, be arranged on the described lens bearing seat, be used for light focusing to described photosensitive device.
2. optical module as claimed in claim 1 is characterized in that, described masking device is a spring-mounted shielding device.
3. optical module as claimed in claim 2 is characterized in that, described spring-mounted shielding device is a rubber blanket.
4. optical module as claimed in claim 1 is characterized in that, also comprises at least one retaining element, and it is fixed on lens bearing seat on the substrate in the mode of passing substrate.
5. optical module as claimed in claim 4 is characterized in that, described retaining element is a screw.
6. optical module as claimed in claim 4 is characterized in that, described retaining element is an elastic fastening hook.
7. optical module as claimed in claim 4 is characterized in that, also comprises at least one cushion pad, is arranged between retaining element and the substrate, is used to reduce retaining element to bump that substrate caused.
8. optical module as claimed in claim 7 is characterized in that, described cushion pad is a rubber blanket.
9. optical module as claimed in claim 7 is characterized in that, described cushion pad is a spring.
10. optical module as claimed in claim 1 is characterized in that, described photosensitive device is complementary metal oxide semiconductor detector (CMOS), and substrate is a printed circuit board (PCB).
11. an optical module that is used for digital camera is characterized in that, comprising:
One substrate;
One photosensitive device is arranged on the described substrate, is used to respond to light;
One lens bearing seat is set on the described photosensitive device;
One retaining element is fixed on described lens bearing seat on the described substrate in the mode of passing described substrate;
One cushion pad is arranged between described retaining element and the described substrate, is used to reduce described retaining element to bump that described substrate caused; And
One optical lens is arranged on the described lens bearing seat, is used for light focusing to described photosensitive device.
12. optical module as claimed in claim 11 is characterized in that, described cushion pad is a rubber blanket.
13. optical module as claimed in claim 11 is characterized in that, described cushion pad is a spring.
14. optical module as claimed in claim 11 is characterized in that, described retaining element is a screw.
15. optical module as claimed in claim 11 is characterized in that, described retaining element is an elastic fastening hook.
16. optical module as claimed in claim 11 is characterized in that, also comprises a masking device, is positioned between the bottom of the upside of substrate and lens bearing seat.
17. optical module as claimed in claim 16 is characterized in that, described masking device is a spring-mounted shielding device.
18. optical module as claimed in claim 17 is characterized in that, described spring-mounted shielding device is a rubber blanket.
19. optical module as claimed in claim 11 is characterized in that, described photosensitive device is the complementary metal oxide semiconductor detector, and substrate is a printed circuit board (PCB).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03264944 CN2632696Y (en) | 2003-06-19 | 2003-06-19 | Optical module for digital camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03264944 CN2632696Y (en) | 2003-06-19 | 2003-06-19 | Optical module for digital camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2632696Y true CN2632696Y (en) | 2004-08-11 |
Family
ID=34297564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03264944 Expired - Fee Related CN2632696Y (en) | 2003-06-19 | 2003-06-19 | Optical module for digital camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2632696Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620934A (en) * | 2016-07-13 | 2018-01-23 | 标致汽车公司 | The maintenance unit with masking wall for the optical unit through damaging of vehicle |
-
2003
- 2003-06-19 CN CN 03264944 patent/CN2632696Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620934A (en) * | 2016-07-13 | 2018-01-23 | 标致汽车公司 | The maintenance unit with masking wall for the optical unit through damaging of vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |