CN108508584B - A kind of zoom lens - Google Patents
A kind of zoom lens Download PDFInfo
- Publication number
- CN108508584B CN108508584B CN201810269112.5A CN201810269112A CN108508584B CN 108508584 B CN108508584 B CN 108508584B CN 201810269112 A CN201810269112 A CN 201810269112A CN 108508584 B CN108508584 B CN 108508584B
- Authority
- CN
- China
- Prior art keywords
- lens
- group
- piece
- fixed group
- mobile phone
- 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.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/20—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having an additional movable lens or lens group for varying the objective focal length
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The invention discloses a kind of zoom lens, successively include preceding group of A from light incident direction, intermediate fixed group B, organize C afterwards, preceding fixed group A has positive light coke, and it is successively made of a piece of meniscus lens, a piece of biconcave lens, a piece of biconvex lens, the fixed group B in centre has positive light coke, and is made of a piece of with convex plano lens, and the rear C that organizes is made of a piece of meniscus lens with negative power, with image quality height, the simple feature of structure；The invention further relates to a kind of Varifocus lens devices, can connect with mobile phone, improve shooting quality.
Description
Technical field
The present invention relates to a kind of zoom lens.
Background technique
It is limited the size and cost of zoom lens, the camera lens in current phone is more than tight shot, although also having one at present
A little zoom lens that focusing can be achieved, but its adjustable focus range is relatively narrow, and higher cost.Now it is external in the art there are also some
The camera lens of mobile phone, but its image quality is not high, focusing range is smaller.Therefore, it is necessary to provide a kind of image quality height, focusing
The big camera lens of range, to numerous mobile phone users with flexibility ratio and the experience of preferably taking pictures.
Summary of the invention
Purpose of the invention is to overcome the shortcomings in the prior art, provides a kind of connection zoom lens and for mobile phone
Lens assembly, which can combine with mobile lens, large range of optical focusing function be realized, to improve mobile phone photograph
Quality and enjoyment.
Above-mentioned purpose is achieved through the following technical solutions:
A kind of zoom lens, preceding group of A for from light incident direction successively including positive light coke, the centre with positive light coke
Fixed group B, the rear group of C with negative power, preceding group of A is successively by a piece of meniscus lens, a piece of biconcave lens, a piece of biconvex lens
It constitutes, the fixed group B in centre is made of a piece of convex plano lens, and the rear C that organizes is made of a piece of meniscus lens, when the camera lens is from wide-angle to prestige
When distal end changes, preceding group of A and the intermediate interval for fixing group B increase, and the rear interval for organizing C and intermediate fixed group B reduces.
Preferably, the camera lens meets following formula:
0.7≤F1/F2≤0.8
-1≤F1/F3≤-0.95
Wherein, F1 is the whole focal length of preceding group of A, and F2 is the focal length of intermediate fixed group B, and F3 organizes the focal length of C after being.
Preferably, the camera lens meets following formula:
Nd1>Nd2>Nd3
Vd3>Vd1>Vd2
Vd1-Vd2>23
Wherein Nd1, Nd2, Nd3 organize the refractive index of first, second, third lens in A, Vd1, Vd2, Vd3 before being respectively
The Abbe number of first, second, third lens in A is organized before respectively.
Preferably, the camera lens meets following formula:
3.22≤D1≤12.5
18.03≤D2≤5.1
Wherein D1 is the interval between preceding group of A and intermediate fixed group of B, between D2 is organized between C for intermediate fixed group B and afterwards
Every unit mm.
Preferably, each lens are spherical mirror.
The present invention also provides a kind of Varifocus lens device for mobile phone, which includes lens barrel, is connect with mobile phone
Shell is equipped with zoom lens as described above in lens barrel.
The rear end of the lens barrel has external screw thread, and lens barrel is adjusted using manual focusing mode.
There is mounting hole, central axis and the mobile lens of mounting hole match, and the aperture of mounting hole is greater than on the shell
The aperture of mobile lens, mounting hole is interior to have internal screw thread, is spirally connected with the external screw thread of lens barrel rear end.
The present invention has the advantages that compared with zoom lens in the prior art
1) structure is simple, small in size, and image quality is high；
2) zooming range is big；
3) at low cost, it is convenient to be connect with mobile phone, improve the quality and enjoyment of mobile phone photograph.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of zoom lens of the present invention；
Fig. 2 is zoom lens of the present invention from wide-angle side to the schematic diagram for taking the photograph distal end variation；
Fig. 3 is the lens barrel schematic diagram in the Varifocus lens device for mobile phone of the invention；
Fig. 4 is the schematic diagram of the shell in the Varifocus lens device for mobile phone of the invention.
Specific embodiment
The present invention is described in detail below by specific embodiment.
As shown in Figure 1, a kind of zoom lens, from light incident direction successively by preceding group of A, intermediate fixed group B, rear group C group
At.Preceding group of A has positive light coke, and is successively made of a piece of meniscus lens, a piece of biconcave lens, a piece of biconvex lens；It is intermediate
Fixed group B is made of a piece of lens with positive light coke, and is plane close to the side of image space；Group C is by a piece of with negative afterwards
The meniscus lens of focal power is constituted.As shown in Fig. 2, when the camera lens changes from wide-angle to telescope end, preceding group of A and intermediate fixed group
The interval of B increases, and the rear interval for organizing C and intermediate fixed group B reduces；
Each parameter of the zoom lens is as shown in the table:
| Face serial number | Radius of curvature mm | Spacing mm | Refractive index Nd | Abbe number Vd | Focal length |
| S1 | 29.22 | 4.63 | 1.8 | 46.7 | 41.19341 |
| S2 | 246.97 | 3.68 | |||
| S3 | -33.41 | 2.69 | 1.73 | 23.5 | -28.3063 |
| S4 | 52.52 | 2.19 | |||
| S5 | 90.2 | 6.61 | 1.6 | 60.7 | 36.93039 |
| S6 | -28.78 | 3.22 | |||
| S7 | 40.28 | 1.72 | 1.51 | 51 | 78.98039 |
| S8 | INFINITY | 18.03 | |||
| S9 | -21.55 | 2.31 | 1.44 | 49.6 | -55.4536 |
| S10 | -190.8 |
Wide-angle side with to take the photograph distal lens parameter as follows:
| D1(mm) | D2(mm) | Whole focal length (mm) | |
| Wide-angle side | 3.4 | 17.8 | 42.89 |
| Take the photograph distal end | 12.5 | 5.1 | 57.16 |
Wherein, intermediate fixed group B uses a piece of image side to effectively reduce the picture of whole system for the positive lens of plane
Difference, also, three pieces lens use Nd1 > Nd2 > Nd3, Vd3 > Vd1 > Vd2, and the arrangement of Vd1-Vd2 > 23 in preceding group of A, have
Effect reduces the color difference of whole system, to substantially increase the image quality of camera lens.Wherein Nd1, Nd2, Nd3 are respectively preceding group
The refractive index of first, second, third lens in A, Vd1, Vd2, Vd3 organize first, second, third lens in A before being respectively
Abbe number.
Fig. 3 is the schematic diagram being installed on zoom lens of the invention after lens barrel, including lens barrel 1, is equipped with change in lens barrel 1
Focus lens, lens barrel 1 use manual focusing mode, and lens barrel has rear end, with external screw thread.
Fig. 4 is the schematic diagram of the shell of the invention connecting with mobile phone comprising shell 2 has on shell 2 and cylinder
Mounting hole 3, the mounting hole 3 match with mobile lens, and have internal screw thread, for the external thread bolt connection with lens barrel rear end.
Claims (8)
1. a kind of zoom lens, from light incident direction successively by with positive light coke preceding group of A, with the centre of positive light coke
Fixed group B, the rear group of C composition with negative power, it is characterised in that: preceding group of A is successively saturating by a piece of meniscus lens, a piece of concave-concave
Mirror, a piece of biconvex lens are constituted, and the fixed group B in centre is made of a piece of convex plano lens, and the rear C that organizes is made of a piece of meniscus lens, when
When the camera lens changes from wide-angle to telescope end, the interval of preceding group of A and intermediate fixed group B increase, rear to organize C's and intermediate fixed group B
Interval reduces, and it is positive lens of the convex surface towards object side that the meniscus lens in A is organized before described, and the rear meniscus lens organized in C is convex surface
Towards the negative lens of image side.
2. zoom lens as described in claim 1, which is characterized in that the camera lens meets following formula:
0.7≤F1/F2≤0.8
-1≤F1/F3≤-0.95
Wherein, F1 is the whole focal length of preceding group of A, and F2 is the focal length of intermediate fixed group B, and F3 organizes the focal length of C after being.
3. zoom lens as described in claim 1, which is characterized in that the camera lens meets following formula:
Nd1>Nd2>Nd3
Vd3>Vd1>Vd2
Vd1-Vd2>23
Wherein Nd1, Nd2, Nd3 organize the refractive index of first, second, third lens in A, Vd1, Vd2, Vd3 difference before being respectively
For the Abbe number of first, second, third lens in preceding group of A.
4. zoom lens as described in claim 1, which is characterized in that the camera lens meets following formula:
3.22≤D1≤12.5
5.1≤D2≤18.03
Wherein D1 is the interval between preceding group of A and intermediate fixed group B, and D2 is the interval between intermediate fixed group B and rear group C, single
Position mm.
5. zoom lens as described in claim 1, it is characterised in that: each lens are spherical mirror.
6. a kind of Varifocus lens device for mobile phone, it is characterised in that: including lens barrel, the shell being connect with mobile phone, in lens barrel
Zoom lens according to any one of claims 1 to 5 is installed.
7. being used for the Varifocus lens device of mobile phone as claimed in claim 6, it is characterised in that: the rear end of the lens barrel has outer
Screw thread, lens barrel are adjusted using manual focusing mode.
8. being used for the Varifocus lens device of mobile phone as claimed in claim 7, it is characterised in that: have installation on the shell
Hole, central axis and the mobile lens of mounting hole match, and the aperture of mounting hole is greater than the aperture of mobile lens, have in mounting hole
Internal screw thread is spirally connected with the external screw thread of lens barrel rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810269112.5A CN108508584B (en) | 2018-03-29 | 2018-03-29 | A kind of zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810269112.5A CN108508584B (en) | 2018-03-29 | 2018-03-29 | A kind of zoom lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108508584A CN108508584A (en) | 2018-09-07 |
| CN108508584B true CN108508584B (en) | 2019-10-01 |
Family
ID=63379145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810269112.5A Expired - Fee Related CN108508584B (en) | 2018-03-29 | 2018-03-29 | A kind of zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108508584B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2924117B2 (en) * | 1990-07-20 | 1999-07-26 | ミノルタ株式会社 | Zoom lens |
| US5392431A (en) * | 1992-10-05 | 1995-02-21 | Pfisterer; Richard N. | TV projection lens including a graded index element |
| JPH09166744A (en) * | 1995-09-22 | 1997-06-24 | Eastman Kodak Co | Compact zoom lens |
| JP2000298236A (en) * | 1999-02-10 | 2000-10-24 | Nikon Corp | Variable focusing lens system |
| JP2008164724A (en) * | 2006-12-27 | 2008-07-17 | Sony Corp | Zoom lens and imaging apparatus |
-
2018
- 2018-03-29 CN CN201810269112.5A patent/CN108508584B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN108508584A (en) | 2018-09-07 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191001 Termination date: 20210329 |
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| CF01 | Termination of patent right due to non-payment of annual fee |