CN102621771A - Shading film and camera module using the same - Google Patents
Shading film and camera module using the same Download PDFInfo
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- CN102621771A CN102621771A CN2011100296488A CN201110029648A CN102621771A CN 102621771 A CN102621771 A CN 102621771A CN 2011100296488 A CN2011100296488 A CN 2011100296488A CN 201110029648 A CN201110029648 A CN 201110029648A CN 102621771 A CN102621771 A CN 102621771A
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- dazzling screen
- hole
- camera module
- inside surface
- eyeglass
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Abstract
The invention relates to a shading film which comprises a first surface and a second surface which are located on two opposite sides of the shading film and in parallel with each other. The shading film further comprises a through hole provided at the center of the first surface and penetrating through the second surface, and at least one frustum-shaped inner surface arranged in the through hole and tilted relative to the first surface or the second surface. The shading film has a thickness of 0.030mm to 0.054mm. In addition, the invention further relates to a camera module using the shading film.
Description
Technical field
The present invention relates to the eyeglass manufacture field, relate in particular to a kind of anti-dazzling screen, and a kind of camera module that adopts this anti-dazzling screen.
Background technology
Along with Development of Multimedia Technology; Digital camera, camera and the electronic products such as mobile phone that have a camera function are more and more favored by consumers in general; Requirement to the electronic product of above-mentioned tool shoot function is that its shooting quality is preferable, and promptly the image frame of picked-up is clear.In the prior art, the image quality of object depends on the structural design mode of each optical module in the camera module to a great extent.
Existing camera module generally includes lens barrel, is immobilizated in a plurality of eyeglasses, cutoff filter, anti-dazzling screen and other optical module in the lens barrel; General anti-dazzling screen 11 is as shown in Figure 1; Said anti-dazzling screen 11 is generally the hollow circular ring shape, and its center offers through hole 15A.During use, this anti-dazzling screen 11 is arranged between the eyeglass 15 with two adjacent at interval eyeglasses 15, and the light that is used to form images is through this through hole 15A and be imaged on CIS; All the other light are absorbed by this anti-dazzling screen 10; Therefore, its surface usually can reflection ray in interval eyeglass 15 for this anti-dazzling screen 10, can prevent that therefore light through its surface reflection is imaged on after reflection or refraction on the CIS and produces glare phenomenon; Thereby the assurance image quality prevents shooting picture distortion distortion.Yet under the high light external environment, common anti-dazzling screen still is difficult to the shaded effect that reaches preferable; Especially; Because common anti-dazzling screen 10 has a sidewall 150 that is positioned at through hole 15A, and this sidewall 150 is generally smooth cylindric curved surface, when strong illumination above that the time; This sidewall 150 is difficult to absorb light fully and the light of reflecting part; This part incides after further reflection or refraction through the light that reflects and produces into dazzle on the CIS, causes image blur, like defectives such as generation ghosts.
Summary of the invention
In view of this, a kind of real being necessary of anti-dazzling screen that prevents dazzle is provided.
A kind of anti-dazzling screen, this anti-dazzling screen comprise and are positioned at its relative both sides and the first surface that is parallel to each other and second surface, through hole that is opened in this first surface center and runs through this second surface, at least one this through hole and frustum inside surface of tilting of this first surface or this second surface relatively of being positioned at.
A kind of camera module, this camera module comprise a lens barrel, at least two eyeglass, at least one anti-dazzling screen and CISs that are housed in this host cavity.This lens barrel comprises a front cover body, first through hole and the extended cylinder of a wherein side by this front cover body that is opened in this front cover body center, and this front cover body combines with this cylinder and forms a host cavity.Each eyeglass has an optic and the support portion around this optic, and at least two optic of these at least two eyeglasses are coaxial.This at least one anti-dazzling screen is arranged between these two eyeglasses with these two eyeglasses of interval at least at least; And this at least one anti-dazzling screen comprise be positioned at its relative both sides and be parallel to each other first surface and second surface, second through hole that is opened in this first surface center and runs through this second surface, at least one this second through hole and frustum inside surface of tilting of this first surface or this second surface relatively of being positioned at; And the thickness of this anti-dazzling screen 10 is 0.030mm～0.054mm, and this at least one second through hole is coaxial with this first through hole.This CIS is arranged on the side of these at least two eyeglasses away from this front cover body, and this CIS is used for the light after sensing passes first through hole and at least one second through hole successively.
With respect to prior art; Anti-dazzling screen provided by the present invention is provided with the frustum inside surface of inclination; This frustum inside surface can prevent irradiate light above that; Or along away from the lateral reflection incident light above that of this CIS, form dazzle on the CIS thereby prevent to incide through its light reflected, guarantee that the camera module forms distinct image.
Description of drawings
Fig. 1 is the diagrammatic cross-section that adopts two eyeglasses at existing anti-dazzling screen institute interval.
Fig. 2 is the diagrammatic cross-section of the anti-dazzling screen that provides of first embodiment of the invention.
Fig. 3 is the diagrammatic cross-section of the anti-dazzling screen that provides of second embodiment of the invention.
Fig. 4 is the diagrammatic cross-section of the anti-dazzling screen that provides of third embodiment of the invention.
Fig. 5 is the diagrammatic cross-section that adopts the camera module of Fig. 2 and anti-dazzling screen shown in Figure 3.
Fig. 6 is the diagrammatic cross-section that adopts the camera module of Fig. 3 and anti-dazzling screen shown in Figure 4.
The main element symbol description
Through hole 10C, 30C, 20C, 15A
Frustum inside surface 101,201
The first frustum inside surface 301
The second frustum inside surface 302
Ring-type pointed cone portion 303
Camera module 100,200
Front cover body 31
First through hole 310
The 3rd surface 311
The 4th surface 312
Cylinder 32
Lens barrel 33
First eyeglass 40
First optic 41
First support portion 42
Groove 45
Bottom surface 45A
Second eyeglass 50
Second optic 51
Second support portion 52
Boss 55
Prismatic glasses 60
The 3rd optic 61
The 3rd support portion 62
Optical filter 70
Surface 70A
Microscope base 80
Top board 80A
Runners 80B
Junction surface 80C
Third through-hole 85
Room 87
CIS 90
Circuit board 95
Embodiment
To combine specific embodiment below, the present invention is done further detailed description.
See also Fig. 2; The anti-dazzling screen 10 that first embodiment of the invention provides a kind of SOMA of employing light screening material to process; This anti-dazzling screen 10 is specially circular tabular, and this anti-dazzling screen 10 comprises first surface 10A and a second surface 10B and through hole 10C who is opened in this first surface 10A center who is positioned at its relative both sides.This first surface 10A and this second surface 10B are parallel to each other.This through hole 10C runs through the second surface 10B of this anti-dazzling screen 10.In addition; This anti-dazzling screen 10 has a taper type inside surface 101 that is positioned at this through hole 10C; This taper type inside surface 101 joins with this first surface 10A and this second surface 10B respectively, and this taper type inside surface 101 relative this first surface 10A or this second surface 10B inclination.In the present embodiment, the diameter of this taper type inside surface 101 diminishes along the direction away from first surface 10A gradually.Can understand, this anti-dazzling screen 10 also can be square tabular, is not limited to specific embodiment.
In addition, this anti-dazzling screen 10 can be made thinlyyer, and for example, the thickness of this anti-dazzling screen 10 can be roughly 0.030～0.054mm.In the present embodiment, the thickness of this anti-dazzling screen 10 can be roughly 0.033mm.
See also Fig. 3; Second embodiment of the invention provides a kind of anti-dazzling screen 20; The anti-dazzling screen 10 that this anti-dazzling screen 20 and first embodiment are provided is similar basically; Comprise first surface 20A and second surface 20B, difference is: the diameter that is positioned at the taper type inside surface 201 of through hole 20C becomes big gradually along the direction away from first surface 20A.In addition, the radius of these anti-dazzling screen 20 outlines is greater than the radius of anti-dazzling screen 10 outlines, and the thickness of this anti-dazzling screen 20 is greater than the thickness of anti-dazzling screen 10.
See also Fig. 4; Third embodiment of the invention provides a kind of anti-dazzling screen 30; The anti-dazzling screen 10 that this anti-dazzling screen 30 and first embodiment are provided is similar basically; Difference is: this anti-dazzling screen 30 has the first taper type inside surface 301 and the second taper type inside surface 302 that is positioned at this through hole 30C that are positioned at through hole 30C; Wherein, this first taper type inside surface 301 joins with first surface 30A and this second taper type inside surface 302 respectively, and this second taper type inside surface 302 joins with the first taper type inside surface 301 and second surface 30B respectively.
In the present embodiment; This first taper type inside surface 301, this first surface 30A or this second surface 30B inclination relatively respectively of the second taper type inside surface 302; Wherein, The diameter of the first taper type inside surface 301 of this through hole 30C becomes big gradually along the direction away from this first surface 30A; And the diameter of the second taper type inside surface 302 of this through hole 30C diminishes along the direction away from this first surface 30A gradually, and this makes this first taper type inside surface 301 combine with this second taper type inside surface 302 and form a ring-type pointed cone portion 303 that this first taper type inside surface 301 and this second taper type inside surface 302 are respectively the two sides of this ring-type pointed cone portion 303.In the present embodiment; This anti-dazzling screen 30 has parallel this first surface 30A or this second surface 30B and passes the axis of symmetry N on the top of this ring-type pointed cone portion 303, this first taper type inside surface 301 and these second taper type inside surface, 302 relative this axis of symmetry N rotational symmetry.
As shown in Figure 5; Fourth embodiment of the invention provides a kind of camera module 100; It has adopted described anti-dazzling screen 10 of first embodiment and the described anti-dazzling screen 20 of second embodiment, and this camera module 100 comprises this anti-dazzling screen 10, anti-dazzling screen 20, lens barrel 33, one first eyeglass 40, one second eyeglass 50, prismatic glasses 60, optical filter 70, a microscope base 80 and a CIS 90.
This lens barrel 33 has a front cover body 31 and a cylinder 32 that is extended out by this front cover body 31.In this present embodiment, this front cover body 31 is circular tabular, and this front cover body 31 comprises relative 311 and one the 4th surfaces 312, one the 3rd surface, and this cylinder 32 is extended out by the outer rim on the 4th surface 312 of this front cover body 31.The core on the 3rd surface 311 of this front cover body 31 is offered one first through hole 310, and this first through hole 310 is roughly frustroconical, and this first through hole 310 narrows down along the direction away from the 3rd surface 311 gradually.In addition; Optical axis M of these first through hole, 310 definition; This cylinder 32 surrounds a cylindrical host cavity 320 around this optical axis M, and this host cavity 320 connects with this first through hole 310, and the central shaft of this cylinder 32 overlaps with this optical axis M; During use, this first through hole 310 can allow extraneous light to get into host cavity 320.
This first, second and prismatic glasses 40,50,60 be respectively a glass lens; Wherein, These first eyeglass, 40 contiguous these front cover bodies 31 are provided with; This prismatic glasses 60 is positioned at the side of this first eyeglass 40 away from this front cover body 31, and this second eyeglass 50 is between this first eyeglass 40 and this prismatic glasses 60.
This first eyeglass 40 has one first optic 41 and first support portion 42 around this first optic 41; Wherein, This first support portion 42 is resisted against on the 4th surface 312 of this front cover body 31; These first optic, 41 relative both sides have one first optical surface 411 and one second optical surface 412 respectively, and wherein, this first optical surface 411 is close to the 3rd surface 311 and is exposed in this first through hole 310.
This first eyeglass 40 is offered a groove 45 away from a side of this front cover body 31, and 40 pairs on this first eyeglass should have a bottom surface 45A by groove 45.In the present embodiment, this anti-dazzling screen 30 is arranged on the bottom surface 45A of this groove 45.
This second eyeglass 50 comprises one second optic 51 and second support portion 52 around this second optic 51.One side of these second support portion, 52 contiguous these first eyeglasses 40 has a boss 55, and this second eyeglass 50 was fastened on this first eyeglass 40 through this boss 55 and cooperating of this groove 45.In the present embodiment; This anti-dazzling screen 10 is arranged between the bottom surface 45A and this boss 55 of this groove 45; Particularly, the first surface 10A of this anti-dazzling screen 10 is mutually bonding with the bottom surface 45A of this groove 45 through glue, and the second surface 10B of this anti-dazzling screen 10 is mutually bonding with the surface of this boss 55 through glue.In the present embodiment, this anti-dazzling screen 10 can be used for first eyeglass 40 and second eyeglass 50 at interval.In addition, the optical axis M of first through hole 310 of the axle center of the through hole 10C of this anti-dazzling screen 10 and this lens barrel 33 coincides.
This prismatic glasses 60 is arranged on the opposite side of this second eyeglass 50 away from this first eyeglass 40.This prismatic glasses 60 comprises one the 3rd optic 61 and the 3rd support portion 62 around this second optic 51.
This anti-dazzling screen 20 can be arranged between this second eyeglass 50 and this prismatic glasses 60 with interval this second eyeglass 50 and this prismatic glasses 60; Particularly; The first surface 10A of this anti-dazzling screen 20 is mutually bonding with the surface of this second support portion 52 through glue, and the second surface 20B of this anti-dazzling screen 20 is mutually bonding with the surface of the 3rd support portion 62 through glue.
This optical filter 70 is arranged on the side of this prismatic glasses 60 away from this second eyeglass 50, and in the present embodiment, the surperficial 70A of this optical filter 70 is mutually bonding with the surface of the 3rd support portion 62 through glue.This optical filter 70 can be specially a cutoff filter (infrared cut filter), and it is used for infrared light filtering that human eye can't be discerned.
This microscope base 80 comprise a top board 80A, one be located at the third through-hole 85 at top board 80A center, and one along this top board 80A to the runners 80B that extends away from a side of this lens barrel 33.The inwall of this runners 80B surrounds a room 87.In addition, this microscope base 80 also comprise one by this top board 80A to away from the extended junction surface 80C of the side of this runners 80B, the internal diameter of this junction surface 80C equals the internal diameter of this third through-hole 85.
These lens barrel 33 parts are arranged in the third through-hole 85 of microscope base 80.Particularly, the outer wall of this cylinder 32 is provided with external thread, the inwall setting of this junction surface 80C and the suitable internal thread of this external thread, and this lens barrel 33 is arranged on this microscope base 80 through the engagement of this external thread and internal thread.
This CIS 90 is arranged in this room 87.Particularly; These CIS 90 relative these optical filters 70 are provided with; It can be a Charged Coupled Device (Charge-coupled Device, CCD) or complementary metal oxide semiconductor (Complementary Metal-Oxide-Semiconductor, CMOS).In addition, can provide a circuit board 95 also this CIS 90 to be provided with above that, to supply power through 95 pairs of these CISs of this circuit board 90.In the present embodiment, the runners 80B of this microscope base 80 is arranged on this circuit board 95.
Because camera module 100 is provided with anti-dazzling screen 10,20; Anti-dazzling screen 10 has the frustum inside surface 101 that relative first surface 10A tilts; Anti-dazzling screen 20 has the frustum inside surface 201 that relative first surface 20A tilts; And frustum inside surface 101 is roughly towards first through hole 310, so it can be along the lateral reflection incident light above that away from this CIS 90, and frustum inside surface 201 roughly deviates from this first through hole 310; Therefore, the light incident that can prevent to get into host cavities 320 by first through hole 310 of this frustum inside surface 201 above that.Therefore; This anti-dazzling screen 10,20 can be at first, second eyeglass 40,50 at interval; And prevent second, third eyeglass 50,60 time through the light after its surface reflection directly or after further reflection or refraction, incide on the CIS 90 and form dazzle to guarantee camera module 100 formation distinct image.
In other change embodiment; Also can adjust the size of anti-dazzling screen 10,20; Like external diameter size, thickness etc.; And with anti-dazzling screen 20 be arranged on first, second eyeglass 40, between 50 with this first, second eyeglass 40,50 at interval, and with anti-dazzling screen 10 be arranged on second, third eyeglass 50, between 60 with this second, third eyeglass 50,60 at interval, to reach the effect of anti-dazzle.In addition, the eyeglass that this camera module 100 is comprised and the number of anti-dazzling screen can adjust accordingly according to actual needs, as long as can reach preventing to form dazzle in the camera module 100 in a plurality of eyeglasses at interval, are not limited to specific embodiment.
As shown in Figure 6; A kind of camera module 200 that fifth embodiment of the invention provides; The camera module 100 that itself and the 4th embodiment are provided is similar, and difference is that the anti-dazzling screen 10 that camera module 100 is comprised replaces with the anti-dazzling screen 30 that the 3rd embodiment is provided.Because anti-dazzling screen 30 has the axisymmetric first taper type inside surface 301 and the second taper type inside surface 302; Therefore need not to consider the mounting direction of anti-dazzling screen 30 at this anti-dazzling screen 30 of assembling; Particularly; The first surface 30A that no matter is anti-dazzling screen 30 is through glue and the bottom surface 245A of groove 245 mutually bonding (as shown in Figure 6); Still the second surface 30B of anti-dazzling screen 30 is mutually bonding with the bottom surface 245A of groove 245 through glue, and this anti-dazzling screen 30 all has the effect that prevents to form in the camera module 200 dazzle, and the effect that anti-dazzle is reached is the same.
Be noted that the foregoing description is merely preferred embodiment of the present invention, those skilled in the art also can do other variation in spirit of the present invention, all should be included within the present invention's scope required for protection.
Claims (10)
1. anti-dazzling screen; Comprise being positioned at its relative both sides and the first surface that is parallel to each other and second surface, through hole that is opened in this first surface center and runs through this second surface, at least onely being positioned at this through hole and the frustum inside surface that tilts of this first surface or this second surface relatively, and the thickness of this anti-dazzling screen is 0.030mm～0.054mm.
2. anti-dazzling screen as claimed in claim 1 is characterized in that, this at least one anti-dazzling screen adopts the SOMA light screening material to process.
3. anti-dazzling screen as claimed in claim 1 is characterized in that, the internal diameter of this at least one through hole diminishes along the direction away from this first surface gradually.
4. anti-dazzling screen as claimed in claim 1; It is characterized in that; This at least one anti-dazzling screen comprises one first frustum inside surface and one second frustum inside surface; This first frustum inside surface joins with first surface and this second frustum inside surface respectively; And the diameter of the first frustum inside surface of at least one through hole becomes greatly along the direction away from this first surface gradually, and this second frustum inside surface joins with the first frustum inside surface and second surface respectively, and the diameter of the second frustum inside surface of this at least one through hole diminishes along the direction away from this first surface gradually.
5. anti-dazzling screen as claimed in claim 1 is characterized in that, the thickness of this at least one anti-dazzling screen is 0.033mm.
6. camera module, this camera module comprises:
A lens barrel, this lens barrel comprise a front cover body, first through hole and the extended cylinder of a wherein side by this front cover body that is opened in this front cover body center, and this front cover body combines with this cylinder and forms a host cavity;
At least two eyeglasses that are housed in this host cavity, each eyeglass has an optic and the support portion around this optic, and at least two optic of these at least two eyeglasses are coaxial;
At least one anti-dazzling screen; This at least one anti-dazzling screen is arranged between these two eyeglasses with these two eyeglasses of interval at least at least; And this at least one anti-dazzling screen comprise be positioned at its relative both sides and be parallel to each other first surface and second surface, second through hole that is opened in this first surface center and runs through this second surface, at least one this second through hole and frustum inside surface of tilting of this first surface or this second surface relatively of being positioned at; And the thickness of this anti-dazzling screen is 0.030mm～0.054mm, and this at least one second through hole is coaxial with this first through hole; And
A CIS, this CIS are arranged on the side of these at least two eyeglasses away from this front cover body, and this CIS is used for the light after sensing passes this first through hole and this at least one second through hole successively.
7. camera module as claimed in claim 6 is characterized in that, the thickness of this at least one anti-dazzling screen is 0.033mm.
8. camera module as claimed in claim 6 is characterized in that, this at least one anti-dazzling screen is mutually bonding through at least two eyeglasses of glue and this.
9. camera module as claimed in claim 6 is characterized in that, this at least one anti-dazzling screen adopts the SOMA light screening material to process.
10. camera module as claimed in claim 6; It is characterized in that; This camera module comprises one first eyeglass and one second eyeglass; This first eyeglass offer a groove, this second eyeglass have one with the suitable boss of this groove, at least one anti-dazzling screen is between the bottom surface and this boss of this groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100296488A CN102621771A (en) | 2011-01-27 | 2011-01-27 | Shading film and camera module using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100296488A CN102621771A (en) | 2011-01-27 | 2011-01-27 | Shading film and camera module using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102621771A true CN102621771A (en) | 2012-08-01 |
Family
ID=46561772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100296488A Pending CN102621771A (en) | 2011-01-27 | 2011-01-27 | Shading film and camera module using the same |
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| Country | Link |
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| CN (1) | CN102621771A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104460188A (en) * | 2014-12-30 | 2015-03-25 | 广东欧珀移动通信有限公司 | Design method and device for size of blue glass photomask of shooting equipment |
| CN105163026A (en) * | 2015-09-01 | 2015-12-16 | 北京信路威科技股份有限公司 | Device and method for lowering influence of headlamp on camera imaging |
| CN107356994A (en) * | 2017-07-07 | 2017-11-17 | 瑞声科技(新加坡)有限公司 | Anti-dazzling screen and its processing method, lens assembly |
| TWI625587B (en) * | 2016-11-14 | 2018-06-01 | 大立光電股份有限公司 | Light blocking sheet, imaging lens module and electronic apparatus |
| CN108957602A (en) * | 2017-05-25 | 2018-12-07 | 大立光电股份有限公司 | Secondary molding ring-shaped optical element, imaging lens group, imaging device and electronic device |
| CN113820824A (en) * | 2020-06-17 | 2021-12-21 | 三营超精密光电(晋城)有限公司 | Optical lens, imaging module and electronic device |
| US11243372B2 (en) * | 2018-11-16 | 2022-02-08 | Hon Hai Precision Industry Co., Ltd. | Light-cancelling lens spacer and lens module using same |
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| US20020191103A1 (en) * | 2001-06-05 | 2002-12-19 | Kazuo Akimoto | Solid photographing apparatus |
| JP2005227500A (en) * | 2004-02-12 | 2005-08-25 | Fujinon Corp | Imaging device |
| CN1743938A (en) * | 2004-09-03 | 2006-03-08 | 富士能株式会社 | Aperture board |
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| US5121251A (en) * | 1989-04-25 | 1992-06-09 | Edwards Optical Corporation | Telemicroscope with absorbing annular baffle |
| US20020191103A1 (en) * | 2001-06-05 | 2002-12-19 | Kazuo Akimoto | Solid photographing apparatus |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104460188A (en) * | 2014-12-30 | 2015-03-25 | 广东欧珀移动通信有限公司 | Design method and device for size of blue glass photomask of shooting equipment |
| CN104460188B (en) * | 2014-12-30 | 2017-08-11 | 广东欧珀移动通信有限公司 | The smalt light shield sizing method and design device of capture apparatus |
| CN105163026A (en) * | 2015-09-01 | 2015-12-16 | 北京信路威科技股份有限公司 | Device and method for lowering influence of headlamp on camera imaging |
| TWI625587B (en) * | 2016-11-14 | 2018-06-01 | 大立光電股份有限公司 | Light blocking sheet, imaging lens module and electronic apparatus |
| CN108957602A (en) * | 2017-05-25 | 2018-12-07 | 大立光电股份有限公司 | Secondary molding ring-shaped optical element, imaging lens group, imaging device and electronic device |
| CN107356994A (en) * | 2017-07-07 | 2017-11-17 | 瑞声科技(新加坡)有限公司 | Anti-dazzling screen and its processing method, lens assembly |
| US11243372B2 (en) * | 2018-11-16 | 2022-02-08 | Hon Hai Precision Industry Co., Ltd. | Light-cancelling lens spacer and lens module using same |
| CN113820824A (en) * | 2020-06-17 | 2021-12-21 | 三营超精密光电(晋城)有限公司 | Optical lens, imaging module and electronic device |
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Application publication date: 20120801 |
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