CN107479298A - The processing method and lens assembly of a kind of shadow shield, this kind of shadow shield - Google Patents
The processing method and lens assembly of a kind of shadow shield, this kind of shadow shield Download PDFInfo
- Publication number
- CN107479298A CN107479298A CN201710551530.9A CN201710551530A CN107479298A CN 107479298 A CN107479298 A CN 107479298A CN 201710551530 A CN201710551530 A CN 201710551530A CN 107479298 A CN107479298 A CN 107479298A
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- CN
- China
- Prior art keywords
- shadow shield
- black powder
- medial surface
- powder coating
- thing side
- Prior art date
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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
- G03B11/00—Filters or other obturators specially adapted for photographic purposes
- G03B11/04—Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Lens Barrels (AREA)
Abstract
The present invention relates to optical image technology field, the processing method and lens assembly of a kind of shadow shield, this kind of shadow shield are disclosed.The shadow shield is annular in shape, including：Thing side, image side surface, side wall, covered with black powder coating on the shadow shield.The shadow shield can effectively weaken the veiling glare in lens barrel, lift image quality.The invention also discloses the processing method of this kind of shadow shield and the lens assembly with this kind of shadow shield.
Description
Technical field
The present invention relates to optical image technology field, more particularly to a kind of shadow shield, this kind of shadow shield processing method with
And the lens assembly with this kind of shadow shield.
Background technology
In recent years, the development with imaging technique and the rise with the electronic product with imaging function, optical lens group
Part is widely used in various products, and is constantly being improved and optimized always.At present, most of lens assemblies
Improvement direction is：How by lens assembly do it is small, do it is thin, and by lens assembly do it is small, do thin while select it is suitable
, lens that there is good optical characteristic fitness and study it and how to combine and can guarantee that good imaging effect.So
And it was found by the inventors of the present invention that during imaging, it is incident upon the auroral poles of the lens assembly shape easily in lens barrel from all angles
Into light disturbance, this causes very big influence to image quality, though on the other hand, it is at the light inlet of imaging lens barrel to have measure at present
The processing for reducing light reflection is done, but is incident to the veiling glare that the light inside lens barrel is formed inside lens barrel through multiple reflections, according to
It is old to reduce image quality.
The content of the invention
It is an object of the invention to provide a kind of shadow shield, this kind of shadow shield processing method and there is this kind of shadow shield
Lens assembly, can effectively weaken the veiling glare in lens barrel, lift image quality.
In order to solve the above technical problems, the invention provides a kind of shadow shield, annularly, including thing side, with the thing
The image side surface and the side wall of the connection thing side and the image side surface that side is oppositely arranged, the side wall are included close to light
The medial surface of axle and the lateral surface being oppositely arranged with the medial surface, covered with black powder coating on the shadow shield.
Present invention also offers a kind of processing method of the shadow shield, comprise the following steps：First, there is provided a shading
Plate, including thing side, the image side surface that is oppositely arranged with the thing side and it is connected the thing side and the side of the image side surface
Wall, the lateral surface that the side wall includes the medial surface of close optical axis and is oppositely arranged with the medial surface, institute is covered with covering
State thing side, the image side surface and the lateral surface；Second, the shadow shield is preheated, preheating temperature is 40 degree Celsius -50 and taken the photograph
Family name's degree, preheating time are -10 minutes 2 minutes；3rd, black powder coating is carried out to the medial surface using electrostatic spraying device
Spraying, until to form a layer thickness be 20-70 micron black bisques to the medial surface；4th, cooling shadow shield is with described
Black powder coating is formed on medial surface；5th, remove the covering.
Present invention also offers a kind of lens assembly, including lens barrel and the lens set being contained in the lens barrel, the mirror
Include foregoing shadow shield in piece group, the shadow shield is located between any two eyeglass in the lens set.
The present invention in terms of existing technologies, by covering the powder coating of black on the shadow shield in lens barrel, reaches
Camera lens internal light baffles are incident upon outside lens barrel to the processing intent of super black, and by the powder coating absorption of the super black
Veiling glare that is upper and being had an impact to imaging effect, greatly reduces the reflex of veiling glare in lens barrel, effectively weakens camera lens
The light disturbance that component is subject to, improves image quality.
In addition, the black powder coating is formed by powder spray.
In addition, covered with the black powder coating on the medial surface.
In addition, the medial surface includes first extended from the thing side close to the edge of the optical axis towards image side bending
Joint face, the second connection extended from the edge of the remote thing side of first joint face towards the direction away from optical axis
Face and the edge of remote optical axis from second joint face extend to the 3rd joint face of the image side surface, and described first
Joint face, the second joint face, the black powder coating is all covered with the 3rd joint face.
In addition, covered with the black powder coating on the image side surface.
In addition, covered with the black powder coating on the thing side.
In addition, covered with the black powder coating on the lateral surface.
In addition, the black powder coating is dumb light black powder coating.
Brief description of the drawings
Fig. 1 is the structural representation of shadow shield in the present invention；
Fig. 2 is the method flow diagram that shadow shield is processed in the present invention；
Fig. 3 is the structural representation of lens assembly in the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, each reality below in conjunction with accompanying drawing to the present invention
The mode of applying is explained in detail.However, it will be understood by those skilled in the art that in each embodiment of the present invention,
In order that reader more fully understands the application and proposes many ins and outs.But even if without these ins and outs and base
Many variations and modification in following embodiment, each claim of the application technical side claimed can also be realized
Case.
The present invention relates to a kind of shadow shield 1, as shown in figure 1, the shadow shield 1 is annular in shape, including thing side 11, image side surface 12
And side wall.Wherein, the thing side 11 is oppositely arranged with image side surface 12, and the side wall connects the thing side 11 and the picture
Side 12, the side wall include medial surface 13 and lateral surface 14, the medial surface 13 close to optical axis OO ', the lateral surface 14 with
The medial surface 13 is oppositely arranged.
Shadow shield 1 in present embodiment is provided in inside lens barrel, because the light outside lens barrel is from the thing side of lens barrel
It is incident in lens barrel, and veiling glare is easily reflected to form inside lens barrel, in present embodiment, by the overlying of shadow shield 1
Lid black powder coating, the processing intent of super black is formed, and reach the absorption to veiling glare using its high blackness, directly subtracted
The light reflex being incident to less on the surface of shadow shield 1 with black powder coating, so as to effectively weaken in lens barrel
The light disturbance in portion, and effectively improve image quality.
It is noted that the black powder coating covered in present embodiment on shadow shield 1 is by powder spray
What mode was formed, the black powder coating that this kind mode is formed, not only super black, extinction effect are good, also very firm, be not easy to take off
Fall.
As shown in figure 1, being incident to the light on lens barrel internal light baffles 1 from thing side, thing side 11, image side surface may be incident upon
12nd, on medial surface 13 or lateral surface 14, wherein, the reflected light formed on medial surface 13 is easiest to be incident upon imaging region and right
Imaging effect has an impact, therefore, in the present embodiment, it is preferred that is only covered on the medial surface 13 of shadow shield 1 described black
Color powder coating, thus, in the case of the minimum and manufacturing process using material is simplest, make the medial surface 13 on shadow shield 1
The veiling glare that interference is produced to imaging effect can farthest be weakened.
It is noted that can also have close to optical axis OO ' and the medial surface 13 of attachment side 11 and image side surface 12
A variety of different structures, in the present embodiment, as shown in figure 1, the medial surface 13 also includes the first joint face 131, second
The joint face 133 of joint face 132 and the 3rd.Wherein, the first joint face 131 from the thing side 11 close to the optical axis OO's '
Edge is bent towards image side to be extended, edge court of second joint face 132 from the remote thing side 11 of first joint face 131
Direction extension away from optical axis OO ', the 3rd joint face 133 extend from the remote optical axis OO ' of second joint face 132 edge
To the image side surface 12, in present embodiment, first joint face 131, the second joint face 132, on the 3rd joint face 133
Covered with the black powder coating.
It is understood that in multiple surfaces of shadow shield 1, image side surface 12 is closest at imaging, on the surface
The reflected light of upper formation will directly be incident upon imaging area, and therefore, covered with black powder coating, this can be real on medial surface 13
In the embodiment applied, covering black powder coating on image side surface 12 can be also further preferably made, is realized in lens barrel
Further absorption, the weakening of veiling glare.
In addition, the thing side 11 of shadow shield 1 is directly facing the light being incident to from the thing side of lens barrel in lens barrel, the surface pole
Substantial amounts of incident light is readily accessed, and is reflexed on the other structures surface inside lens barrel, further results in other knots
Light reflex on structure surface, so as to form the veiling glare of the different angle directive imaging region in many places, therefore, present embodiment
In, make medial surface 13, on image side surface 12 covered with black powder coating on the basis of, further preferred makes on thing side 11
Covered with the black powder coating that can absorb, weaken veiling glare.
Further, the basis of black powder coating can also be covered on medial surface 13, image side surface 12, thing side 11
On, make and the black powder coating is again covered with the lateral surface 14 of shadow shield 1, so as to reach each table of whole shadow shield 1
Face can be absorbed to the light being incident to thereon, be weakened, and farthest reduce the reflection veiling glare in lens barrel.
It should be noted that individually covering black powder coating can be reached to lens barrel on each surface of shadow shield 1
The absorption of internal veiling glare, weaken, in actual applications, each face on the shadow shield 1 can be carried out according to specific needs
It is independent or any combination to select, to carry out the covering of black powder coating, to realize absorption and weakening to veiling glare, herein no longer
Repeat.
In addition, effect of the powder coating of dumb light black in terms of the reflection of light is weakened is best, and therefore, this embodiment party
In formula, the black powder coating is dumb light black powder coating, naturally it is also possible to selects other black classes according to being actually needed
The powder coating of type, is not repeated here.
The invention further relates to a kind of processing method of the shadow shield 1, as shown in Fig. 2 being mainly coated with using electrostatic
It is standby, powder spray to need cover powder shadow shield 1 surface on, wherein, pass through in the inside of electrostatic spraying device quiet
Electric generating means (being generally located on the end inside powder spraying apparatus) makes on the powder belt of ejection electric charge and by spray gun to spray
The control of air-flow is applied, powder is covered in well on the surface of shadow shield 1, such as Fig. 2 under the double action of electrostatic and air-flow
It is shown, specifically comprise the following steps.
S01：One shadow shield 1 is provided, thing side 11, the image side surface 12 and the lateral surface are covered with covering
14。
Specifically, the shadow shield 1 includes thing side 11, image side surface 12 and side wall.Wherein, thing side 11 and image side
Face 12 is oppositely arranged, and side wall, which connects the thing side 11 and the image side surface 12, the side wall, includes medial surface 13 and lateral surface
14, wherein, the medial surface 13 is close to optical axis OO ', and the lateral surface 14 is oppositely arranged with the medial surface 13, in this embodiment party
In formula, in order to give the spraying covering black powder coating of medial surface 13 in step below, first the thing side is covered with covering
11st, the image side surface 12 and the lateral surface 14.It is noted that the use of covering is to prevent the powder spray in later stage
Painting is sprayed onto these positions that need not be sprayed, and causes the trouble of post-processing and the aesthetic problem of entirety.
S02：The shadow shield 1 is preheated.
The moisture on the surface of shadow shield 1 can be eliminated by being preheated to shadow shield 1, powder and the table of shadow shield 1 when improving powder spray
The temperature of face contact interface, the residual stress caused by differences in expansion is reduced between the surface that is sprayed-on of shadow shield 1 and powder, with
The cracking of the thus powder coating that the caused later stage is formed is avoided, and improves the bond strength of the surface of shadow shield 1 and powder coating.
Wherein, preheating temperature is 40 degrees Celsius -50 degrees Celsius, and preheating time is -10 minutes 2 minutes, it is preferred that preheating temperature
Spend for 45 degrees Celsius, preheating time is 6 minutes, and in other embodiments, preheating temperature can also be as needed with preheating time
Adjustment.
S03：The spraying of black powder coating is carried out to the medial surface 13 using electrostatic spraying device.
Specifically, it is that black powder coating is carried out to the medial surface 13 of the shadow shield 1 using electrostatic spraying device
Spraying, until forming one layer of black bisque on the medial surface 13.
It is noted that the thickness of the black powder coating on medial surface 13 is 20-70 microns, it is preferred that described
The thickness of black bisque is 50 microns, and in other embodiments, the thickness of black bisque can also adjust as needed.In addition,
The color of the black powder coating can be any black type, still, in present embodiment, the color of the black powder coating
Preferably dumb light black.
It should be noted that electrostatic spraying device also includes being used for the powder feeder unit for powder, in powder feeder unit, at powder
In a kind of state of fluidisation, this is realized by the effect of compressed air, afterwards powder by siphonage by high velocity stream
Dynamic air-flow is with formation powder gas mixes, and by venturi powder pump, duff pipe, eventually arrives at and is sprayed on spray gun.In addition,
Can be according to spraying needs, the electric charge of air-flow and electrostatic generator to spray gun regulates and controls, with the process to powder spray
It is controlled.
In addition, after powder spray is carried out using electrostatic spraying device, the powder of spraying can also be preferably made through high temperature
Levelling solidification is toasted, so that the powder of spraying forms final powder coating.
S04：Shadow shield 1 is cooled down to form black powder coating on the medial surface 13.
Shadow shield 1 is cooled down, until black powder coating is finally cooled and shaped on the medial surface 13, in this step,
Can be cooled down shadow shield 1 natural cooling or method by other coolings under normal temperature condition.
S05：Remove the covering.
It is noted that the covering can be Protection glue, PET (polyethylene
Terephthalate, PET), 3M (MMM, Minnesota Mining and Manufacturing, i.e., Minnesota mines and
The abbreviation of manufacturing industry company) glue etc..
It is firm to being covered on the medial surface 13 of shadow shield 1 using the processing mode of electrostatic powder coating in present embodiment
And the black powder coating of super black, the medial surface 13 for being incident to shadow shield 1 is largely absorbed using the powder coating of the super black
On light, reduce medial surface 13 on parasitic reflection phenomenon, to weaken influence of the veiling glare in lens barrel to image quality, effectively
Improve image quality.
In addition, the processing mode of powder spray, the powder coating surface for the medial surface 13 that can make to be sprayed at shadow shield 1 is put down
Whole smooth uniform color, have extremely strong acid resistance, alkali resistance, wear resistance, and can be subjected to for a long time intense UV radiation etc. without
There is phenomena such as coating efflorescence, fade, come off, and in whole process, be not in containing toxicity, volatility toxicity, molten
The material of agent, the powder can repeat to recycle, and process operation process is easy to operate, and finished product efficiency is high, therefore, have splendid
Application prospect.
It should be noted that before using electrostatic powder coating, it should be noted that the surface to the medial surface 13 of shadow shield 1 is carried out
The removal processing of greasy dirt, dust, rusty stain, thus enables that powdery paints is equably sprayed on medial surface 13.
The invention further relates to a kind of lens assembly with above-mentioned shadow shield 1, lens barrel 3, lens set 2 and as previously described are included
Shadow shield 1.Wherein, lens set 2 is contained in the lens barrel 3, and the shadow shield 1 can be located in the lens set 2
Between any two eyeglass.
It is understood that the eyeglass in lens set 2 can be 4 or 1,2,3,5 or more
It is individual, specific number, selection setting can be carried out according to different demands, as shown in figure 3, in the present embodiment, the lens set 2
Comprising 4 eyeglasses, and the shadow shield 1 is folded between two eyeglasses of image side.
Light is injected inside lens barrel from the thing side direction of lens barrel 3, and light path passes through lens set 2 and shadow shield 1, this embodiment party
In formula, by covering firm and super black black powder coating on the surface to the shadow shield 1 close to image side, absorb big
Amount is incident to the light on the surface of shadow shield 1 with the black coating, to reduce the veiling glare phenomenon that light reflects to form, greatly promotes
Image quality.
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific embodiment of the present invention,
And in actual applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (10)
1. a kind of shadow shield, annularly, it is characterised in that the image side surface that is oppositely arranged including thing side, with the thing side, with
And connect the side wall of the thing side and the image side surface, the side wall include close to optical axis medial surface and with the medial surface
The lateral surface being oppositely arranged, covered with black powder coating on the shadow shield.
2. shadow shield according to claim 1, it is characterised in that the black powder coating is formed by powder spray
's.
3. shadow shield according to claim 1, it is characterised in that applied on the medial surface covered with the black powder
Layer.
4. shadow shield according to claim 3, it is characterised in that the medial surface is included from the thing side close to described
First joint face of the edge of optical axis towards image side bending extension, the edge court from the remote thing side of first joint face
The edge of the second joint face that direction away from optical axis extends and the remote optical axis from second joint face extends to described
3rd joint face of image side surface, first joint face, the second joint face, the black powder is all covered with the 3rd joint face
Coating.
5. shadow shield according to claim 4, it is characterised in that applied on the image side surface covered with the black powder
Layer.
6. shadow shield according to claim 5, it is characterised in that applied on the thing side covered with the black powder
Layer.
7. shadow shield according to claim 6, it is characterised in that applied on the lateral surface covered with the black powder
Layer.
8. shadow shield according to claim 1, it is characterised in that the black powder coating is that dumb light black powder applies
Layer.
9. a kind of processing method of shadow shield, it is characterised in that comprise the following steps：
First, there is provided a shadow shield, including thing side, the image side surface that is oppositely arranged with the thing side and described in being connected
Thing side and the side wall of the image side surface, the side wall include close to optical axis medial surface and be oppositely arranged with the medial surface
Lateral surface, thing side, the image side surface and the lateral surface are covered with covering；
Second, the shadow shield is preheated, preheating temperature is 40 degrees Celsius -50 degrees Celsius, and preheating time is -10 minutes 2 minutes；
3rd, the spraying of black powder coating is carried out to the medial surface using electrostatic spraying device, until the medial surface shape
It is 20-70 micron black bisques into a layer thickness；
4th, cooling shadow shield is with the formation black powder coating on the medial surface；
5th, remove the covering.
10. a kind of lens assembly, it is characterised in that including lens barrel and the lens set being contained in the lens barrel, the lens set
The interior shadow shield including as described in any one claim in claim 1-8, the shadow shield is in the lens set
Any two eyeglass between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710551530.9A CN107479298A (en) | 2017-07-07 | 2017-07-07 | The processing method and lens assembly of a kind of shadow shield, this kind of shadow shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710551530.9A CN107479298A (en) | 2017-07-07 | 2017-07-07 | The processing method and lens assembly of a kind of shadow shield, this kind of shadow shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107479298A true CN107479298A (en) | 2017-12-15 |
Family
ID=60596133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710551530.9A Pending CN107479298A (en) | 2017-07-07 | 2017-07-07 | The processing method and lens assembly of a kind of shadow shield, this kind of shadow shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107479298A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879408A (en) * | 2020-06-18 | 2020-11-03 | 武汉高芯科技有限公司 | Light blocking ring with stray light inhibiting function, cold screen and refrigeration type infrared detector |
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| CN104570168A (en) * | 2013-10-16 | 2015-04-29 | 玉晶光电(厦门)有限公司 | Lens, lens assembly and manufacture method of lens |
| CN204389721U (en) * | 2013-10-15 | 2015-06-10 | 富士胶片株式会社 | Optical element, lens unit, photographing module and electronic equipment |
| CN106772895A (en) * | 2016-12-10 | 2017-05-31 | 瑞声科技(新加坡)有限公司 | Imaging lens |
| CN106802528A (en) * | 2016-10-25 | 2017-06-06 | 瑞声科技(新加坡)有限公司 | Shadow shield, the processing method of shadow shield and camera lens module |
| CN106802461A (en) * | 2016-10-25 | 2017-06-06 | 瑞声科技(新加坡)有限公司 | Pressure ring, the processing method of pressure ring and camera lens module |
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2017
- 2017-07-07 CN CN201710551530.9A patent/CN107479298A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204389721U (en) * | 2013-10-15 | 2015-06-10 | 富士胶片株式会社 | Optical element, lens unit, photographing module and electronic equipment |
| CN104570168A (en) * | 2013-10-16 | 2015-04-29 | 玉晶光电(厦门)有限公司 | Lens, lens assembly and manufacture method of lens |
| CN106802528A (en) * | 2016-10-25 | 2017-06-06 | 瑞声科技(新加坡)有限公司 | Shadow shield, the processing method of shadow shield and camera lens module |
| CN106802461A (en) * | 2016-10-25 | 2017-06-06 | 瑞声科技(新加坡)有限公司 | Pressure ring, the processing method of pressure ring and camera lens module |
| CN106772895A (en) * | 2016-12-10 | 2017-05-31 | 瑞声科技(新加坡)有限公司 | Imaging lens |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111879408A (en) * | 2020-06-18 | 2020-11-03 | 武汉高芯科技有限公司 | Light blocking ring with stray light inhibiting function, cold screen and refrigeration type infrared detector |
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