CN204178037U - The preposition camera lens of three-chip type 5,000,000 pixel mobile phone - Google Patents
The preposition camera lens of three-chip type 5,000,000 pixel mobile phone Download PDFInfo
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- CN204178037U CN204178037U CN201420386509.XU CN201420386509U CN204178037U CN 204178037 U CN204178037 U CN 204178037U CN 201420386509 U CN201420386509 U CN 201420386509U CN 204178037 U CN204178037 U CN 204178037U
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Abstract
The utility model relates to the preposition camera lens of a kind of three-chip type 5,000,000 pixel mobile phone; comprise resin lens and optical filter; be provided with sensitive chip cover glass; resin lens, optical filter and sensitive chip cover glass set gradually; resin lens adopts 3 chip resin lens structures; first piece of resin lens adopts biconvex structure, and second piece of resin lens adopts concaveconvex structure, and the 3rd piece of resin lens adopts convex-concave structure.Solve the aberration problem that optical system produces well, entire length significantly reduces, and saves a large amount of production costs, can bring a lot of changes to optimization system, can better reduce because field angle is larger, and the senior aberration brought.
Description
Technical field
The utility model relates to the preposition photographic lens of a kind of mobile phone, particularly relates to the preposition camera lens of a kind of three-chip type 5,000,000 pixel mobile phone.
Background technology
At present, along with the fast development of mobile terminal 3G/4G business, Mobile Industry is able to development at full speed, and the camera function of mobile phone, as a ring very important in Mobile Industry, has driven the progress of whole mobile lens industry.Because present high order aspheric surface process technology, precision have had very large lifting, and the pixel dimension of imageing sensor also drops to less than 1.1 microns, add the appearance of new material, the progress of these science and technology all promotes improving constantly of mobile lens manufacture level.Therefore, the mobile lens of low and middle-end pixel gradually replace by high-end camera lens.Current development trend is: under the prerequisite more and more higher to image quality requirements, and the trend lightening to handset is more and more obvious.After mobile phone has carried twin-lens pattern, front-facing camera is more and more applied in numerous functions such as video calling, auto heterodyne, front and back scene splicing, like this quality requirements of preposition camera lens is also promoted further, in order to meet the requirement of closely autodyning, require increasing to the field angle of camera lens, and along with the fieriness of mobile lens inter-industry competition, one of important means of cost control Ye Shizhong producer competition.
The pixel of the preposition camera lens of existing mobile phone is relatively low, generally all control between 300,000 pixels to 2,000,000 pixels, the preposition camera lens of minority brand flagship mobile phone is when reaching 5,000,000 pixel, structure adopts 4 pieces of lens type structures usually, and field angle is at about 65 ~ 70 degree, optics overall length is generally at more than 3.8mm, and aperture F number is usually about 2.8.Its structure usually as shown in Figure 1.Wherein, first piece of eyeglass, 101, second piece of eyeglass 102, the 3rd piece of eyeglass 103 and the 4th piece of eyeglass 104 are all resin lens, each face of four pieces of eyeglasses is high order aspheric surface minute surface, infrared fileter 105 is the infrared fileter of 0.3mm, and aperture diaphragm is placed between first piece of eyeglass, 101, second piece of eyeglass 102.The shortcoming of this type of camera lens is:
1. optics overall length is bigger than normal, and because preposition camera lens is generally all placed on the edge of mobile phone screen, thickness is general partially thin herein, if optics overall length is bigger than normal, cell-phone camera module will be partially thick, so just do not meet current mobile phone one-piece construction and be tending towards lightening trend;
2. field angle is less than normal, in in-plant situation, cannot obtain and be satisfied with picture visual field, and total painting dough figurine face amasss bigger than normal, cannot obtain the aesthetic coordinated mutually with background ratio;
3. structure have employed 4 pieces of resin lens, when optics overall length increases, needs the equipment increasing a set of production, adds production cost;
4. what adopt is COB chip encapsulation technology, although can be compact in one-piece construction, cost be relatively high;
5. aperture-coefficient value is bigger than normal, the logical light quantity of camera lens entirety can be caused so inadequate, be unfavorable for that the raising of power resolved by camera lens, and can be very restricted in relative exposure under the environment that light is more weak.
Utility model content
The utility model, for above-mentioned problems of the prior art, provides the preposition camera lens of a kind of three-chip type 5,000,000 pixel mobile phone, solves the problem that in prior art, mobile phone front-facing camera optics overall length is partially long, field angle is less than normal, and reduces cost.
Technical solutions of the utility model are as follows:
Comprise resin lens and optical filter; be provided with sensitive chip cover glass; resin lens, optical filter and sensitive chip cover glass set gradually; resin lens adopts 3 chip resin lens structures; first piece of resin lens adopts biconvex structure; second piece of resin lens adopts concaveconvex structure, and the 3rd piece of resin lens adopts convex-concave structure.
Aperture diaphragm is placed in the face of first piece of described resin lens object space.
Six faces of three pieces of described resin lens all adopt the high order aspheric surface of 16 times.
Described the 3rd piece of resin lens 0.7 position optimization above center of lens line goes out flex point.
The utility model has the advantages of as follows:
1. have employed three-chip type structure, entire length significantly reduces, and saves a large amount of production costs.
2. six faces of three pieces of eyeglasses all adopt the high order aspheric surface of 16 times, can bring a lot of changes to optimization system, can better reduce because field angle is larger, and the senior aberration brought.
3. aperture diaphragm is placed on the face of object space of first piece of eyeglass, increases the height of some image planes with this, reach the high pixel resolution requirement of camera lens.
4, sensitive chip cover glass is just as layer protecting film, and prevent photo-sensitive cell to be subject to extraneous injury, such as scratch, dirty, aqueous vapor etc., prevents from causing Imaging factor.
5. the utility model is by said structure, achieves and the entire length of optical system is significantly reduced, control
3.3mm below; Add the field angle of optical system, make it to reach about 80 degree, considerably increase the area of picture length in closely situation; F number is optimized to 2.4, optimizing optical system, makes optical distortion be less than 2.5%, TV distortion and be less than 1%, the basic None-identified of distortion phenomenon; Improving relative exposure and be greater than 40%, make it can ensure enough logical light quantities to chip, photo-sensitive cell can being made to obtain high light according to ensureing; Guarantee all to be greater than 0.4 at 1/2 limiting frequency place mtf value, the imaging effect of high-quality can be obtained; Make point range figure in 0 visual field, 0.7 visual field and 1 visual field are all less than the pixel dimension of three times; Make image height reach more than 2mm, the chip choosing 1.1 microns of pixel dimension can obtain the image of 5,000,000 pixels.Object lens of large relative aperture, can promote effect of taking pictures night; Rational in infrastructure, easy to assembly, be applicable to produce in enormous quantities.
6. encapsulating structure adopts CSP structure, greatly enhances productivity and reduces costs output.
7. this structure first piece of eyeglass adopts biconvex structure, is used for the scope of whole focal length of control both optical structure, guarantee that optics overall length is unlikely to long, and it is unsuitable excessive to control spherical aberration; Second piece of eyeglass adopts concaveconvex structure, offsets the contrary sign aberration that first piece of eyeglass produces; 3rd piece of eyeglass goes out flex point at 0.7 position optimization of eyeglass, is used for controlling the correction of the outer senior aberration of axle and aberration.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art;
Fig. 2 is structural representation of the present utility model.
101-the first piece of eyeglass, 102-the second piece of eyeglass, 103-the three piece of eyeglass, 104-the four piece of eyeglass, 105-optical filter, 106-image planes;
201-the first piece of resin lens, 202-the second piece of resin lens, 203-the three piece of resin lens, 204-optical filter, 205-sensitive chip cover glass, 206-image planes.
Embodiment
Referring to accompanying drawing, in conjunction with specific embodiments, concrete structure of the present utility model is described in detail.
Embodiment
As shown in Figure 2, encapsulating structure adopts CSP structure, comprise resin lens and optical filter, be provided with sensitive chip cover glass, resin lens, optical filter 204 and sensitive chip cover glass 205 set gradually, resin lens adopts 3 chip resin lens structures, first piece of resin lens 201 adopts biconvex structure, second piece of resin lens 202 adopts concaveconvex structure, 3rd piece of resin lens 203 adopts convex-concave structure, 3rd piece of resin lens, 0.7 position optimization above center of lens line goes out flex point, 0.7 described position is divided into 10 parts by lens ensemble as 1, 7th part of position above 0.7 position and center of lens line, first piece of described resin lens adopts Resin A PL5514, and second piece of resin lens adopts resin OKP4, and the 3rd piece of resin lens adopts APL5514 material, aperture diaphragm is placed on the face of first piece of eyeglass object space.Six faces of three pieces of described resin lens all adopt the high order aspheric surface of 16 times.
Table 1 is the structural parameters of optical system; The asphericity coefficient of table 2 optical system; Those of ordinary skill in the art, can production and processing with reference to the lens data described in above-mentioned table.
The above know-why being specific embodiment of the utility model and using, any based on the equivalent transformation on technical solutions of the utility model basis, all belong within protection domain of the present utility model.
Claims (4)
1. the preposition camera lens of three-chip type 5,000,000 pixel mobile phone; comprise resin lens and optical filter; it is characterized in that being provided with sensitive chip cover glass; resin lens, optical filter and sensitive chip cover glass set gradually; resin lens adopts 3 chip resin lens structures; first piece of resin lens adopts biconvex structure, and second piece of resin lens adopts concaveconvex structure, and the 3rd piece of resin lens adopts convex-concave structure.
2. the preposition camera lens of three-chip type 5,000,000 pixel mobile phone according to claim 1, aperture diaphragm is placed in the face that it is characterized in that first piece of described resin lens object space.
3. the preposition camera lens of three-chip type 5,000,000 pixel mobile phone according to claim 1, is characterized in that six faces of three pieces of described resin lens all adopt the high order aspheric surface of 16 times.
4. the preposition camera lens of three-chip type 5,000,000 pixel mobile phone according to claim 1, is characterized in that described the 3rd piece of resin lens 0.7 position optimization above center of lens line goes out flex point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420386509.XU CN204178037U (en) | 2014-07-14 | 2014-07-14 | The preposition camera lens of three-chip type 5,000,000 pixel mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420386509.XU CN204178037U (en) | 2014-07-14 | 2014-07-14 | The preposition camera lens of three-chip type 5,000,000 pixel mobile phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204178037U true CN204178037U (en) | 2015-02-25 |
Family
ID=52566839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420386509.XU Expired - Fee Related CN204178037U (en) | 2014-07-14 | 2014-07-14 | The preposition camera lens of three-chip type 5,000,000 pixel mobile phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204178037U (en) |
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2014
- 2014-07-14 CN CN201420386509.XU patent/CN204178037U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20170714 |