CN201226044Y - Minitype high-pixel optical lens - Google Patents
Minitype high-pixel optical lens Download PDFInfo
- Publication number
- CN201226044Y CN201226044Y CNU2008200483134U CN200820048313U CN201226044Y CN 201226044 Y CN201226044 Y CN 201226044Y CN U2008200483134 U CNU2008200483134 U CN U2008200483134U CN 200820048313 U CN200820048313 U CN 200820048313U CN 201226044 Y CN201226044 Y CN 201226044Y
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- CN
- China
- Prior art keywords
- lens
- pixel optical
- miniature high
- pixel
- optical 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a micro type high-pixel optical lens which includes a drawtube and a bearing seat; the front end of the drawtube is provided with a diaphragm; the back surface of the diaphragm is provided with a first lens, a second lens, a third lens and a fourth lens in turn from the outside to the inside; the micro type high-pixel optical lens is characterized in that the surface of the first lens is a biconvex glass sphere; the surface of the second lens is a biconcave glass sphere; the surface of the third lens is a crescent type plastic non-sphere and the surface of the four lens is a plastic hyperbolic non-sphere. The micro type high-pixel optical lens is mainly applied on the aspect of a high-pixel mobile phone.
Description
[technical field]
The utility model relates to a kind of optical lens, relates in particular to a kind of miniature high-pixel optical lens that is applied to high-pixel mobile phone.
[background technology]
In recent years, the demand of carrying camera on the mobile phone is increasing, pixel request is more and more higher, and this class camera system is widely used in CCD (charged coupled device) or CMOS solid imaging devices such as (complementary metal oxide semiconductor).Trending towards of mobile phones design now is lightening, and the space that then gives this class camera system installation is just littler, thereby requires camera system miniaturization and lightness; And the consumer is also more and more higher to the one-tenth picture element requirement of mobile phone camera, the camera cell phone of main flow is mainly 300,000 on the market now, 1,300,000, the photo of being taken is no matter from the sharpness of integral body, or the homogeneity aspect of illumination, far away from the effect that digital camera is taken, can only be provided on the mobile phone and appreciate, can not reach the exquisite photo level of printing.TTL optics length overall was long as high pixel mirror was first, was difficult to satisfy the demand for development of frivolous mobile phone.
[utility model content]
The utility model has overcome the deficiencies in the prior art, provides a kind of high pixel, volume little, can be used in the miniature high-pixel optical lens of mobile phone.
In order to solve the technical matters of above-mentioned existence, the utility model adopts following technical proposal:
A kind of miniature high-pixel optical lens, comprise lens barrel and bearing, be provided with diaphragm at the lens barrel front end, be provided with first lens, second lens, the 3rd lens and the 4th lens from outside to inside successively in the diaphragm back, the surface that it is characterized in that first lens is the double convex glass sphere, the surface of second lens is a concave-concave glass sphere, and the surface of the 3rd lens is a curved month type plastic cement aspheric surface, and the surface of the 4th lens is a plastic cement hyperbola aspheric surface.
Aforesaid a kind of miniature high-pixel optical lens is characterized in that first lens and second lens combination synthesize bonding eyeglass.
Aforesaid a kind of miniature high-pixel optical lens is characterized in that being provided with at described second lens and the 3rd lens the black darkening ring of the veiling glare eliminated of annular.
Aforesaid a kind of miniature high-pixel optical lens is characterized in that being provided with between the 3rd lens and the 4th lens delustring spacer ring that can effectively stop invalid parasitic light.
Aforesaid a kind of miniature high-pixel optical lens is characterized in that also being provided with optical filter at the rear portion of the 4th lens, and this optical filter is fixed on the bearing.
Aforesaid a kind of miniature high-pixel optical lens is characterized in that the 3rd lens, and the aspherical shape of the 4th lens satisfies following equation: Z=cy
2/ { 1+ √ [1-(1+k) c
2y
2]+α
1y
2+ α
2y
4+ α
3y
6+ α
4y
8+ α
5y
10+ α
6y
12+ α
7y
14+ α
8y
16, in formula, parameter c is the pairing curvature of radius, and y is a radial coordinate, and k is the circular cone whose conic coefficient.
The utility model compared with prior art has following advantage: 1. the ingenious combination of several camera lenses of the present utility model just can reach than higher 5,000,000 pixels; 2. the utility model imaging is clear, the sharpness height, and color is good, can print exquisite photograph; 3. the utility model illuminance of image plane is even, the relative exposure height; 4. because the utility model resolving power is higher, can satisfy 3,000,000 or 5,000,000 CMOS sensitive films simultaneously, strengthen its market competitiveness; 5. the utility model volume is little, and its optics length overall (TTL) is 5.64mm, and camera lens screw thread specification is M7x0.35mm, is fit to the lightening requirement of mobile phone; 6. two eyeglasses in the utility model front adopt glass mirror, and two eyeglasses in back adopt plastic lens, have both reduced the cost of processed glass, can satisfy the needs of function again.
[description of drawings]
Fig. 1 is a sectional view of the present utility model;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is a stereographic map of the present utility model.
[embodiment]
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
A kind of miniature high-pixel optical lens, comprise lens barrel 1 and bearing 2, be provided with diaphragm 3 at lens barrel 1 front end, diaphragm 3 is positioned at optical lens foremost, it can be so that the clear aperture minimum of camera lens, thereby makes the volume miniaturization of optical system, helps improving illuminance of image plane again, increase the reception luminous energy of imaging surface sensitization unit, improve final image tablet quality.Be provided with first lens 4 from outside to inside successively in diaphragm 3 back, second lens 5, the 3rd lens 6 and the 4th lens 7, the surface of first lens 4 is the double convex glass sphere, the surface of second lens 5 is a concave-concave glass sphere, the surface of the 3rd lens 6 is curved month type aspheric surface plastic cement lens, and the surface of the 4th lens 7 is hyperbola aspheric surface plastic cement lens.
Between first lens 4 and second lens 5 is bonding eyeglass, and first lens 4, second lens 5 are double convex glass sphere, concave-concave glass sphere, and processing is than being easier to, so the employing glass material is processed, so characteristics such as the sharpness height of glass mirror are relatively good to the sharpness of imaging; And the 3rd lens 6, the 4th lens 7 adopt plastic cement materials to make, it is good mainly to be that plastic lens has light transmission, in light weight, cost is low, shock proof advantage is utilized injection molding technology in addition, can be under the situation that guarantees precision and efficient the processing plastic eyeglass, than using the upright camera lens of glass mirror group, use plastic lens will save great amount of cost.
Mobile lens good imaging quality ring, key factor is the airspace control between eyeglass, the utility model is controlled airspace between eyeglass by darkening ring and spacer ring, the tolerance of consideration portion product can influence separates picture, the utility model has been done special processing in design, the eyeglass interbody spacer reduces separating the picture influence, has reduced the difficulty of processing of portion's product.
Change for reducing the refraction angle of light between each lens, be controlled to image distortion, need to reduce distance between second lens 5 and the 3rd lens 6 on the structure; The distance that the 3rd lens 6 and the 4th lens are 7 widens, and makes light excessively mild, the eccentric influence that brings between attenuating face; For improving the curvature of field, the 3rd lens 6 two sides all are designed to the hyperbolic curve aspheric surface.
In the cavity of described lens barrel 1 and bearing 2, the biconvex R value absolute value of first lens 4 is designed to equate, this kind mode designs and promptly saved the difficulty of processing that cost has reduced portion's product again.
Be provided with the black darkening ring 8 of the veiling glare eliminated of annular at described second lens 5 and the 3rd lens 6, use darkening ring, the more effective veiling glare that blocks makes image planes cleaner, and is more clear, lowers the distortion of imaging to greatest extent.
Be provided with the delustring spacer ring 9 that can effectively stop invalid parasitic light between the 3rd lens 6 and the 4th lens 7, parasitic light is to pollute the most fatal killer of image planes, and facts have proved artificial adding aperture diaphragm and some parts of camera lens are carried out delustring is one of simple effective method.
Rear portion at the 4th lens 7 also is provided with optical filter 10, and this optical filter 10 is fixed on the bearing 2, promptly utilizes the mode of some glue to be bonded on the bearing.10 pairs of CMOS sensitive chips of optical filter have the certain protection effect, and also ` filters a part of light simultaneously, has good color reducibility when making image color beautiful and sharp keen.
The aspherical shape of the 3rd lens 6, the four lens 7 satisfies following equation: Z=cy
2/ { 1+ √ [1-(1+k) c
2y
2]+α
1y
2+ α
2y
4+ α
3y
6+ α
4y
8+ α
5y
10+ α
6y
12+ α
7y
14+ α
8y
16, in formula, parameter c is the pairing curvature of radius, y is a radial coordinate, k is the circular cone whose conic coefficient, and when k-factor face deltoid less than-1 time is a hyperbolic curve, equaling at-1 o'clock is para-curve, between-1 is oval between 0 the time, equals at 0 o'clock for circular, be oblateness greater than 0 o'clock.α
1To α
8Represent the pairing coefficient of each radial coordinate respectively, can accurately set the geomery of both-sided aspherical before and after the lens by above parameter, in the utility model, the COEFFICIENT K of the 3rd lens 6, the 4th lens 7 is all less than 1.
The utility model first lens 4 have the positive refraction effect, second lens 5 have the negative refraction effect, the 3rd lens 6 have the positive refraction effect, the 4th lens 7 have the positive refraction effect, in addition owing to second lens 5, the 3rd lens 6, the 4th lens 7 integral body have the negative refraction effect, thereby make optical system picture side main face forward shift, make the contraction in length of optical system.
Claims (6)
1, a kind of miniature high-pixel optical lens, comprise lens barrel (1) and bearing (2), be provided with diaphragm (3) at lens barrel (1) front end, be provided with first lens (4), second lens (5), the 3rd lens (6) and the 4th lens (7) from outside to inside successively in diaphragm (3) back, the surface that it is characterized in that first lens (4) is the double convex glass sphere, the surface of second lens (5) is a concave-concave glass sphere, the surface of the 3rd lens (6) is a curved month type plastic cement aspheric surface, and the surface of the 4th lens (7) is a plastic cement hyperbola aspheric surface.
2, a kind of miniature high-pixel optical lens according to claim 1 is characterized in that first lens (4) and second lens (5) are combined into bonding eyeglass.
3, a kind of miniature high-pixel optical lens according to claim 2 is characterized in that being provided with at described second lens (5) and the 3rd lens (6) the black darkening ring (8) of the veiling glare eliminated of annular.
4, a kind of miniature high-pixel optical lens according to claim 3 is characterized in that being provided with between the 3rd lens (6) and the 4th lens (7) the delustring spacer ring (9) that can effectively stop invalid parasitic light.
5, a kind of miniature high-pixel optical lens according to claim 1 is characterized in that also being provided with optical filter (10) at the rear portion of the 4th lens (7), and this optical filter (10) is fixed on the bearing (2).
6, according to the described a kind of miniature high-pixel optical lens of each claim in the claim 1 to 5, it is characterized in that the 3rd lens (6), the aspherical shape of the 4th lens (7) satisfies following equation: Z=cy
2/ { 1+ √ [1-(1+k) c
2y
2]+α
1y
2+ α
2Y4+ α
3y
6+ α
4y
8+ α
5y
10+ α
6y
12+ α
7y
14+ α
8y
16, in formula, parameter c is the pairing curvature of radius, and y is a radial coordinate, and k is the circular cone whose conic coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200483134U CN201226044Y (en) | 2008-05-21 | 2008-05-21 | Minitype high-pixel optical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200483134U CN201226044Y (en) | 2008-05-21 | 2008-05-21 | Minitype high-pixel optical lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201226044Y true CN201226044Y (en) | 2009-04-22 |
Family
ID=40598940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200483134U Expired - Fee Related CN201226044Y (en) | 2008-05-21 | 2008-05-21 | Minitype high-pixel optical lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201226044Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053330A (en) * | 2009-11-09 | 2011-05-11 | 富士胶片株式会社 | Lens module and shooting unit |
| TWI481918B (en) * | 2010-07-12 | 2015-04-21 | Hon Hai Prec Ind Co Ltd | Lens barrel and lens module having same |
| CN105589166A (en) * | 2016-03-12 | 2016-05-18 | 中山联合光电科技股份有限公司 | Camera lens |
| CN108663775A (en) * | 2017-04-01 | 2018-10-16 | 华为技术有限公司 | A kind of camera lens module and terminal |
| 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 |
-
2008
- 2008-05-21 CN CNU2008200483134U patent/CN201226044Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053330A (en) * | 2009-11-09 | 2011-05-11 | 富士胶片株式会社 | Lens module and shooting unit |
| TWI481918B (en) * | 2010-07-12 | 2015-04-21 | Hon Hai Prec Ind Co Ltd | Lens barrel and lens module having same |
| CN105589166A (en) * | 2016-03-12 | 2016-05-18 | 中山联合光电科技股份有限公司 | Camera lens |
| CN108663775A (en) * | 2017-04-01 | 2018-10-16 | 华为技术有限公司 | A kind of camera lens module and terminal |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090422 Termination date: 20130521 |