US20180024310A1 - Image Lens - Google Patents
Image Lens Download PDFInfo
- Publication number
- US20180024310A1 US20180024310A1 US15/358,538 US201615358538A US2018024310A1 US 20180024310 A1 US20180024310 A1 US 20180024310A1 US 201615358538 A US201615358538 A US 201615358538A US 2018024310 A1 US2018024310 A1 US 2018024310A1
- Authority
- US
- United States
- Prior art keywords
- reflecting surface
- fixing
- optical axis
- units
- lens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0018—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for preventing ghost images
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/005—Diaphragms
Definitions
- the present disclosure relates cameras, especially relates to an imaging lens which can eliminate stray light.
- the imaging lens is an important optical component in camera imaging devices.
- the optical performance of the imaging lens has big influence on imaging quality.
- General imaging lens mainly includes a lens barrel, a plurality of (two or more) imaging modules and a plurality of spacing modules. Imaging modules are installed inside the lens barrel and the spacing modules can be installed between the lens barrel and the imaging module or between two adjacent imaging modules. When the emitted or reflected light from the object side of the imaging lens enters the lens barrel, the image is formed by the imaging lens on the imaging surface at the image side of the imaging module.
- the spacing part has a certain thickness, the stray light reflected from the spacing module's internal wall may go to the image side surface of the lens and then create flare or ghost. Especially for the imaging module closest to the object side, the stray light created by the spacing part has more serious affect.
- an imaging lens 2 includes a lens barrel 21 , a plurality of lenses 22 installed along the optical axis in the lens barrel 21 .
- a plastic spacing part 23 and punched spacing part 24 are installed between the lens 22 and adjacent lens 22 from the object side to the image side. The punched spacing part 24 eliminates the stray light reflected from the lens 22 closest to the image side to the plastic spacing part 23 .
- Such a mode can eliminate the stray light reflected from the lens 22 closest to the image side to the plastic spacing part 23 to a certain degree, but this mode has weak light absorption and cannot eliminate completely the stray light reflected from the lens 22 closest to the image side to the plastic spacing part 23 , and the structure is too complex, not conducive to reduce the cost.
- FIG. 1 is an illustration of an image lens related to the present disclosure.
- FIG. 2 is an illustration of an image lens in accordance with an exemplary embodiment of the present disclosure.
- FIG. 3 is an illustration of a lens barrel of the image lens in FIG. 2 .
- FIG. 4 is an illustration of a spacing part of the image lens in FIG. 1 .
- an imaging lens 100 in accordance with an exemplary embodiment of the present disclosure, includes an imaging module 1 , a punched spacing part 2 , a lens barrel 3 having an accommodation space and a spacing part 4 .
- the imaging module 1 includes near object units 11 and near image unit 13 .
- Five near object units 11 and one near image unit 13 are provided.
- the near object units 11 and the near image unit 13 are separated from each other and installed in an order from the object side to the image side in the accommodation space 35 .
- the spacing part 4 is installed between the near image unit 13 and adjacent the near object units 11 .
- the imaging module 1 in this embodiment is a lens.
- the numbers of the near object unit 11 and the near image unit 13 can be set freely according to need.
- the spacing part can also be freely installed between any two of the near object units 11 and between any two of the near image units 13 .
- the punched spacing parts 2 are clamped between two adjacent near object units 11 .
- the lens barrel 3 includes a lens barrel wall 33 and an accommodation space 35 .
- the optical axis and the central axis of the lens barrel 3 are aligned.
- the lens barrel wall 33 is arranged around the optical axis and forms the accommodation space 35 .
- the lens barrel wall 33 includes an internal surface 331 and an external surface 333 opposite to the internal surface 331 .
- the internal surface 331 includes an inner face 3311 attached with the near object unit 11 , a step surface 3313 extending from the inner face 3311 toward the direction away from the optical axis, and a wall surface 3315 which extends from the step surface 3313 toward the direction away from the inner face 3311 and which is attached with the spacing part 4 and the near image unit 13 .
- the spacing part 4 includes a fixing portion 41 fixed on the lens barrel wall 33 and an extending portion 43 extending from the fixing part 41 toward the optical axis.
- the fixing part 41 includes a first fixing surface 411 , a second fixing surface 413 , an extension wall 415 , an attaching wall 417 and a second reflecting surface 419 .
- the first fixing surface 411 and the second fixing surface 413 are installed opposite to the fixing portion 41 along the direction from the object side to the image side.
- the first fixing surface 411 is separated with the step surface 3313 .
- the second fixing surface 413 is attached with the near image unit 13 .
- the extension wall 415 extends from the first fixing surface 411 toward the second fixing surface 413 , and not yet up to the second fixing surface 413 .
- the horizontal distance from the extension wall 415 to the optical axis is less than the horizontal distance from the external side of the near object unit 11 adjacent to the near image unit 13 to the optical axis.
- the second reflecting surface 419 is located on the fixing part 41 and extends un-straightly from the second fixing surface 413 to the optical axis toward one end of the extension wall 415 close to the near image unit 13 .
- the attaching wall 417 and the extension wall 415 are installed opposite each other, connecting the first fixing surface 411 and the second fixing surface 413 .
- the attaching wall 417 and the wall surface 3315 are attached.
- the second reflecting surface 419 is a slope surface.
- the extending part 43 includes an upper surface 431 , the first reflecting surface 433 and a slope wall 435 .
- the extending portion 43 and the fixing portion 41 are molded together.
- the upper surface 431 extends from one end of the extension wall 415 close to the near object unit 11 toward the optical axis 31 .
- the upper surface 431 and the first fixing surface 411 are on same plane.
- the upper surface 431 is attached with the near object unit 11 adjacent to the near image unit 13 .
- the first reflecting surface 433 is located on the extending portion 43 and extends from one end of the extension wall 415 close to the near image unit 11 toward the optical axis.
- the slope wall 435 extends from the upper surface 431 toward the direction close to the optical axis 31 , connects the upper surface 431 and the first reflecting surface 435 .
- the first reflecting surface 433 is a horizontal plane.
- the angle between the first reflecting surface 433 and the second reflecting surface 419 is an obtuse angle.
- the spacing part 4 is made of plastic.
- the imaging lens 100 disclosed in the present invention has following beneficial effects:
- the first reflecting surface 433 and the second reflecting surface 419 are matched, so that the light from the near image unit 13 to the spacing part 4 is reflected two times, that dramatically the light absorption of the spacing part 4 increases and the stray light reflected from the spacing part 4 is eliminated to the greatest degree;
- the first reflecting surface 433 is a horizontal plane and the second reflecting surface 419 is a slope surface, in favor of light extinguishing, also increasing the light absorption of the spacing part 4 ;
- the imaging lens 100 by installing a structure of the spacing part 4 replaces the complex structure composed of plastic spacing part and punched spacing part in related technology, so that the imaging lens 100 can be shaped easily, the cost of material can be reduced.
- the imaging module 1 in this embodiment is a lens and the spacing part 4 is made of plastic.
Abstract
Description
- The present disclosure relates cameras, especially relates to an imaging lens which can eliminate stray light.
- The imaging lens is an important optical component in camera imaging devices. The optical performance of the imaging lens has big influence on imaging quality. General imaging lens mainly includes a lens barrel, a plurality of (two or more) imaging modules and a plurality of spacing modules. Imaging modules are installed inside the lens barrel and the spacing modules can be installed between the lens barrel and the imaging module or between two adjacent imaging modules. When the emitted or reflected light from the object side of the imaging lens enters the lens barrel, the image is formed by the imaging lens on the imaging surface at the image side of the imaging module.
- However, because the spacing part has a certain thickness, the stray light reflected from the spacing module's internal wall may go to the image side surface of the lens and then create flare or ghost. Especially for the imaging module closest to the object side, the stray light created by the spacing part has more serious affect.
- In related technologies, referring to
FIG. 1 , animaging lens 2 includes alens barrel 21, a plurality oflenses 22 installed along the optical axis in thelens barrel 21. In order to eliminate the affect of the stray light created by theplastic spacing part 23 reflected from thelens 22 closest to the object side, aplastic spacing part 23 and punchedspacing part 24 are installed between thelens 22 andadjacent lens 22 from the object side to the image side. The punchedspacing part 24 eliminates the stray light reflected from thelens 22 closest to the image side to theplastic spacing part 23. Such a mode can eliminate the stray light reflected from thelens 22 closest to the image side to theplastic spacing part 23 to a certain degree, but this mode has weak light absorption and cannot eliminate completely the stray light reflected from thelens 22 closest to the image side to theplastic spacing part 23, and the structure is too complex, not conducive to reduce the cost. - Therefore, it is necessary to provide an improved image lens to overcome above disadvantage.
- Many aspects of the embodiment can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
-
FIG. 1 is an illustration of an image lens related to the present disclosure. -
FIG. 2 is an illustration of an image lens in accordance with an exemplary embodiment of the present disclosure. -
FIG. 3 is an illustration of a lens barrel of the image lens inFIG. 2 . -
FIG. 4 is an illustration of a spacing part of the image lens inFIG. 1 . - The present invention will hereinafter be described in detail with reference to an exemplary embodiment. To make the technical problems to be solved, technical solutions and beneficial effects of the present disclosure more apparent, the present disclosure is described in further detail together with the figures and the embodiment. It should be understood the specific embodiment described hereby is only to explain this disclosure, not intended to limit this disclosure.
- Referring to
FIG. 2 animaging lens 100 in accordance with an exemplary embodiment of the present disclosure, includes animaging module 1, a punchedspacing part 2, alens barrel 3 having an accommodation space and aspacing part 4. - The
imaging module 1 includesnear object units 11 and nearimage unit 13. Fivenear object units 11 and one nearimage unit 13 are provided. Thenear object units 11 and thenear image unit 13 are separated from each other and installed in an order from the object side to the image side in theaccommodation space 35. Thespacing part 4 is installed between thenear image unit 13 and adjacent thenear object units 11. Theimaging module 1 in this embodiment is a lens. In this embodiment, there are 5near object units image unit 13. In other embodiments, the numbers of thenear object unit 11 and thenear image unit 13 can be set freely according to need. The spacing part can also be freely installed between any two of thenear object units 11 and between any two of thenear image units 13. - In this embodiment, there are 2 punched spacing parts. The punched
spacing parts 2 are clamped between two adjacent nearobject units 11. - Referring to
FIGS. 2-4 , thelens barrel 3 includes alens barrel wall 33 and anaccommodation space 35. The optical axis and the central axis of thelens barrel 3 are aligned. Thelens barrel wall 33 is arranged around the optical axis and forms theaccommodation space 35. Thelens barrel wall 33 includes aninternal surface 331 and anexternal surface 333 opposite to theinternal surface 331. Theinternal surface 331 includes aninner face 3311 attached with thenear object unit 11, astep surface 3313 extending from theinner face 3311 toward the direction away from the optical axis, and awall surface 3315 which extends from thestep surface 3313 toward the direction away from theinner face 3311 and which is attached with thespacing part 4 and thenear image unit 13. - The
spacing part 4 includes afixing portion 41 fixed on thelens barrel wall 33 and an extendingportion 43 extending from thefixing part 41 toward the optical axis. - The
fixing part 41 includes afirst fixing surface 411, asecond fixing surface 413, anextension wall 415, an attachingwall 417 and a second reflectingsurface 419. Thefirst fixing surface 411 and thesecond fixing surface 413 are installed opposite to thefixing portion 41 along the direction from the object side to the image side. Thefirst fixing surface 411 is separated with thestep surface 3313. Thesecond fixing surface 413 is attached with thenear image unit 13. Theextension wall 415 extends from thefirst fixing surface 411 toward thesecond fixing surface 413, and not yet up to thesecond fixing surface 413. The horizontal distance from theextension wall 415 to the optical axis is less than the horizontal distance from the external side of thenear object unit 11 adjacent to thenear image unit 13 to the optical axis. The second reflectingsurface 419 is located on thefixing part 41 and extends un-straightly from thesecond fixing surface 413 to the optical axis toward one end of theextension wall 415 close to thenear image unit 13. The attachingwall 417 and theextension wall 415 are installed opposite each other, connecting thefirst fixing surface 411 and thesecond fixing surface 413. The attachingwall 417 and thewall surface 3315 are attached. The second reflectingsurface 419 is a slope surface. - The extending
part 43 includes anupper surface 431, the first reflectingsurface 433 and aslope wall 435. The extendingportion 43 and thefixing portion 41 are molded together. Theupper surface 431 extends from one end of theextension wall 415 close to thenear object unit 11 toward the optical axis 31. Theupper surface 431 and thefirst fixing surface 411 are on same plane. Theupper surface 431 is attached with thenear object unit 11 adjacent to thenear image unit 13. The first reflectingsurface 433 is located on the extendingportion 43 and extends from one end of theextension wall 415 close to thenear image unit 11 toward the optical axis. Theslope wall 435 extends from theupper surface 431 toward the direction close to the optical axis 31, connects theupper surface 431 and the first reflectingsurface 435. The first reflectingsurface 433 is a horizontal plane. The angle between the first reflectingsurface 433 and the second reflectingsurface 419 is an obtuse angle. - In the embodiment, the
spacing part 4 is made of plastic. Compared with the relevant technology, theimaging lens 100 disclosed in the present invention has following beneficial effects: - 1. The first reflecting
surface 433 and the second reflectingsurface 419 are matched, so that the light from thenear image unit 13 to thespacing part 4 is reflected two times, that dramatically the light absorption of thespacing part 4 increases and the stray light reflected from thespacing part 4 is eliminated to the greatest degree; - 2. The first reflecting
surface 433 is a horizontal plane and the second reflectingsurface 419 is a slope surface, in favor of light extinguishing, also increasing the light absorption of thespacing part 4; - 3. The
imaging lens 100 by installing a structure of thespacing part 4 replaces the complex structure composed of plastic spacing part and punched spacing part in related technology, so that theimaging lens 100 can be shaped easily, the cost of material can be reduced. - The
imaging module 1 in this embodiment is a lens and thespacing part 4 is made of plastic. - It is to be understood, however, that even though numerous characteristics and advantages of the present exemplary embodiment have been set forth in the foregoing description, together with details of the structures and functions of the embodiment, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms where the appended claims are expressed.
Claims (7)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610573794.XA CN106094155B (en) | 2016-07-20 | 2016-07-20 | Imaging lens |
CN201610573794 | 2016-07-20 | ||
CN201610573794.X | 2016-07-20 |
Publications (2)
Publication Number | Publication Date |
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US9874715B1 US9874715B1 (en) | 2018-01-23 |
US20180024310A1 true US20180024310A1 (en) | 2018-01-25 |
Family
ID=57221071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/358,538 Active US9874715B1 (en) | 2016-07-20 | 2016-11-22 | Image lens |
Country Status (3)
Country | Link |
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US (1) | US9874715B1 (en) |
JP (1) | JP6368760B2 (en) |
CN (1) | CN106094155B (en) |
Cited By (2)
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US20220229262A1 (en) * | 2018-03-02 | 2022-07-21 | Corephotonics Ltd. | Spacer design for mitigating stray light |
US11733475B2 (en) * | 2020-05-06 | 2023-08-22 | Genius Electronic Optical (Xiamen) Co., Ltd. | Lens barrel |
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TWI596417B (en) * | 2016-11-14 | 2017-08-21 | 大立光電股份有限公司 | Light blocking sheet, imaging lens module and electronic apparatus |
CN107329227A (en) * | 2017-07-07 | 2017-11-07 | 瑞声科技(新加坡)有限公司 | A kind of imaging lens |
TWI628484B (en) * | 2017-08-11 | 2018-07-01 | 大立光電股份有限公司 | Imaging lens assembly, camera module and electronic device |
TWI698672B (en) * | 2017-08-11 | 2020-07-11 | 大立光電股份有限公司 | Imaging lens assembly, camera module and electronic device |
CN208026940U (en) * | 2018-02-09 | 2018-10-30 | 瑞声科技(新加坡)有限公司 | A kind of camera lens module |
TWI642967B (en) * | 2018-03-07 | 2018-12-01 | 大立光電股份有限公司 | Annular optical component, image capturing module and electronic device |
CN208636491U (en) * | 2018-07-24 | 2019-03-22 | 瑞声科技(新加坡)有限公司 | Lens module |
TWI662312B (en) * | 2018-10-11 | 2019-06-11 | 大立光電股份有限公司 | Imaging lens assembly with metal retainer, camera module including same assembly and electronic device including same module |
TWM578388U (en) | 2018-10-24 | 2019-05-21 | 大立光電股份有限公司 | Imaging lens assembly, camera module and electronic device |
CN210488092U (en) * | 2019-09-04 | 2020-05-08 | 瑞声通讯科技(常州)有限公司 | Lens module |
TWI730639B (en) | 2020-02-25 | 2021-06-11 | 大立光電股份有限公司 | Imaging lens module and electronic device |
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US11675155B2 (en) * | 2018-03-02 | 2023-06-13 | Corephotonics Ltd. | Spacer design for mitigating stray light |
US11733475B2 (en) * | 2020-05-06 | 2023-08-22 | Genius Electronic Optical (Xiamen) Co., Ltd. | Lens barrel |
Also Published As
Publication number | Publication date |
---|---|
CN106094155A (en) | 2016-11-09 |
JP6368760B2 (en) | 2018-08-01 |
JP2018013758A (en) | 2018-01-25 |
US9874715B1 (en) | 2018-01-23 |
CN106094155B (en) | 2018-10-30 |
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