CN103345045B - A kind of kind of high image quality miniature Liar of all-plastic lens arrangement - Google Patents
A kind of kind of high image quality miniature Liar of all-plastic lens arrangement Download PDFInfo
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- CN103345045B CN103345045B CN201310289450.2A CN201310289450A CN103345045B CN 103345045 B CN103345045 B CN 103345045B CN 201310289450 A CN201310289450 A CN 201310289450A CN 103345045 B CN103345045 B CN 103345045B
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Abstract
The present invention relates to a kind of kind of high image quality miniature Liar of all-plastic lens arrangement, comprise bearing and be connected to the lens barrel in bearing, in the cavity of lens barrel, be provided with pressure ring, the first lens, the second lens from outside to inside successively, between first and second lens, be provided with spacer ring; The first described lens are negative focal length lens, and its first surface towards object space is oblate aspheric surface, and second towards image space is hyperbolic curve aspheric surface; Second lens are positive focal length lens, and its first surface towards object space is circular aspheric, and second towards image space is hyperbolic curve aspheric surface.The invention provides a kind of 2,000,000 pixels, thickness ultrathin, the optical lens of high sensitivity and the above touch-screen of 70-110 inch can be used in.
Description
[technical field]
The present invention relates to a kind of infrared wide-angle optical lens, particularly relate to one and be applied to high pixel touch-screen identification minisize optical lens.
[background technology]
The shortcoming that the touch-screen identification camera lens ubiquity of current use is such: pixel is lower, physical dimension is larger.The camera cell phone of present main flow mainly 300,000 pixels, the low configuration camera lens of 40 inch screen on market, its sensitivity and identification range are all not ideal enough, can only use at sensitivity requirement without the touch-screen that screen is less; And the thickness of camera lens is bigger than normal, is generally about 10mm.
The present invention, in order to overcome above shortcoming, has carried out a large amount of improvement.
[summary of the invention]
Instant invention overcomes the deficiencies in the prior art, provide a kind of 2,000,000 pixels, thickness ultrathin, the optical lens of high sensitivity and the above touch-screen of 70-110 inch can be used in.
In order to solve the technical matters of above-mentioned existence, present invention employs following technical proposal:
A kind of kind of high image quality miniature Liar of all-plastic lens arrangement, it is characterized in that the lens barrel 2 comprising bearing 1 and be connected in bearing, in the cavity of lens barrel 2, be provided with pressure ring 3, first lens 4, second lens 5 from outside to inside successively, between first and second lens, be provided with spacer ring 6; The first described lens 4 are negative focal length lens, and its first surface 41 towards object space is oblate aspheric surface, and the second face 42 towards image space is hyperbolic curve aspheric surface; Second lens 5 are positive focal length lens, and its first surface 51 towards object space is circular aspheric, and the second face 52 towards image space is hyperbolic curve aspheric surface.
The kind of high image quality miniature Liar of a kind of all-plastic lens arrangement as above, it is characterized in that the first described lens 4, second lens 5 system element characteristic meets following formula :-5<f1/f2<2, vd P1≤60, vd P2-vd P1≤40, wherein, f1 is the focal length of the first lens, and f2 is the focal length of the second lens, vdP1 is the abbe number of the first lens, and vd P2 is the abbe number of the second lens.
The kind of high image quality miniature Liar of a kind of all-plastic lens arrangement as above, is characterized in that the aspheric surface configuration of the first described lens and the second lens meets 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, the curvature of parameter c corresponding to radius, y is that its unit of radial coordinate is identical with length of lens unit, and k is circular cone whose conic coefficient; When k-factor is less than-1, face shape curve is hyperbolic curve, is para-curve when equaling-1, is oval time between-1 to 0, for circular when equaling 0, for oblate when being greater than 0; α
1to α
8represent the coefficient corresponding to each radial coordinate respectively.
The kind of high image quality miniature Liar of a kind of all-plastic lens arrangement as above, it is characterized in that: the first lens are towards image space second aspheric hyperbola, require that its k-factor is for being less than-1, first lens are oblate aspheric surface towards the first surface aspherical shape of object space, and its k-factor is for being greater than 0; Second lens are oblate aspheric surface towards the first surface aspheric surface of object space, and k-factor is for being greater than 0, and the second lens are hyperbola towards second aspherical shape of image space, and its k-factor is less than-1.
The kind of high image quality miniature Liar of a kind of all-plastic lens arrangement as above, is characterized in that: the distance between described first lens and the second lens mirror is H, wherein 0 < H≤1mm.
The kind of high image quality miniature Liar of a kind of all-plastic lens arrangement as above, is characterized in that: the periphery trimming shape of described first lens is run-track shaped.
The kind of high image quality miniature Liar of a kind of all-plastic lens arrangement as above, is characterized in that: described first lens employing vd P1 < 30, vdP1 is the abbe number of the first lens.
The kind of high image quality miniature Liar of a kind of all-plastic lens arrangement as above, is characterized in that: described second lens are less than 3mm towards the radius-of-curvature in second face 52 of image planes.
The present invention compared with prior art has following advantage:
1, numerical digit camera lens of the present invention can reach more than 2,000,000 pixels when infrared spectrum, and existing miniature digital-mirror first as be 300,000.
2, thickness of the present invention is the thinnest can reach 1.8mm.
3, the present invention can realize the wide-angle imaging that maximum field of view angle is 140 degree.
4, high, highly sensitive for touch recognition environment of sharpness of the present invention.
[accompanying drawing explanation]
Fig. 1 is diagrammatic cross-section of the present invention.
Fig. 2 is decomposing schematic representation of the present invention.
[embodiment]
Describe the present invention below in conjunction with accompanying drawing:
As shown in Figure 1, a kind of kind of high image quality miniature Liar of all-plastic lens arrangement, may be used for relatively cheap high pixel CMOS sensitive film, comprise bearing 1 and be connected to the lens barrel 2 in bearing, in the cavity of lens barrel 2, be provided with pressure ring 3, first lens 4, second lens 5 from outside to inside successively, between first and second lens, be provided with spacer ring 6.The first described lens 4 are negative focal length lens, and its first surface 41 towards object space is oblate aspheric surface, and the second face 42 towards image space is hyperbolic curve aspheric surface.Described second lens 5 are positive focal length lens, and its first surface 51 towards object space is circular aspheric, and the second face 52 towards image space is hyperbolic curve aspheric surface.The periphery trimming shape of described first lens is run-track shaped, and namely the first Lens Design becomes trimming circular shape.
The aspheric surface configuration of the first described lens 4, second lens 5 meets 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, the curvature of parameter c corresponding to radius, y is that its unit of radial coordinate is identical with length of lens unit, and k is circular cone whose conic coefficient; When k-factor is less than-1, face shape curve is hyperbolic curve, is para-curve when equaling-1, is oval time between-1 to 0, for circular when equaling 0, for oblate when being greater than 0; α
1to α
8represent the coefficient corresponding to each radial coordinate respectively.The geomery of both-sided aspherical before and after lens accurately can be set by above parameter.
First lens 4 are towards image space second aspheric hyperbola, and require that its k-factor is oblate aspheric surface for being less than the-1, the first lens towards the first surface aspherical shape of object space, its k-factor is for being greater than 0.Second lens 5 are oblate aspheric surface towards the first surface aspheric surface of object space, and k-factor is for being greater than 0, and the second lens are hyperbola towards second aspherical shape of image space, and its k-factor is less than-1.
The first described lens, the second lens combination element characteristic meet following formula :-5<f1/f2<2, vd P1≤60, vd P2-vd P1≤40, wherein, f1 is the focal length of the first lens, f2 is the focal length of the second lens, and vd P2 is the abbe number of the second lens, and vdP1 is the abbe number of the first lens.More excellent mode, described first lens adopt the lens of vd P1 < 30.
For realizing high angle scattered light imaging, structure needs the distance as far as possible between reduction first and second lens, namely in the present embodiment, the distance between described first lens and the second lens mirror is H, wherein 0 < H≤1mm.
Bearing 1 is linked on the excircle of lens barrel 2 rear end, and between bearing 1 and lens barrel 2, threaded engagement is fixed.
In the cavity of lens barrel and bearing, the rear portion of the second lens 5 is also provided with infrared fileter 7; light enters from infrared fileter 7; infrared fileter has certain protective effect to CMOS sensitive chip; also filter out the unwanted light affecting image quality simultaneously; make image taxes and profits and improve sensitivity, contributing to promoting picture contrast simultaneously.
Diaphragm face is between optical system first lens and the second lens, diaphragm is also above-mentioned spacer ring 6, it can make the little system that simultaneously reduces of the eyeglass clear aperture of system to the susceptibility of eccentricity of glasses lens manufacturing tolerance, thus makes the volume miniaturization of optical system and easy mass production.
Second lens are hyperbolic curve aspheric surfaces towards second face of image planes, and its radius-of-curvature is less than 3mm, and it can make the length of whole camera lens be as short as below 4.5mm most.
First lens of system have negative refractive power, and the second lens have positive refractive power, thus make optical system can realize wide-angle image.
Below the cases of design of this optical lens:
Surface data gathers:
Surface data details:
Surface OBJ standard
Surface 1 aspheric surface
Surface 2 aspheric surfaces
Surface STO standard
Surface 4 aspheric surfaces
Surface 5 aspheric surfaces
Surface 6 standards
Surface 7 standards
Surface IMA standard
Claims (7)
1. the kind of high image quality miniature Liar of an all-plastic lens arrangement, it is characterized in that the lens barrel (2) comprising bearing (1) and be connected in bearing, in the cavity of lens barrel (2), be provided with pressure ring (3), the first lens (4), the second lens (5) from outside to inside successively, between first and second lens, be provided with spacer ring (6); Described the first lens (4) are negative focal length lens, and its first surface towards object space (41) is oblate aspheric surface, and second (42) towards image space are hyperbolic curve aspheric surface; Second lens (5) are positive focal length lens, its first surface towards object space (51) is circular aspheric, second (52) towards image space are hyperbolic curve aspheric surface, described first lens employing vd P1 < 30, vdP1 is the abbe number of the first lens.
2. the kind of high image quality miniature Liar of a kind of all-plastic lens arrangement according to claim 1, it is characterized in that described the first lens (4), the second lens (5) system element characteristic meets following formula :-5<f1/f2<2, vd P2-vd P1≤40, wherein, f1 is the focal length of the first lens, f2 is the focal length of the second lens, and vdP1 is the abbe number of the first lens, and vd P2 is the abbe number of the second lens.
3. the kind of high image quality miniature Liar of a kind of all-plastic lens arrangement according to claim 1 and 2, is characterized in that the aspheric surface configuration of described the first lens (4) and the second lens (5) meets 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, the curvature of parameter c corresponding to radius, y is radial coordinate (its unit is identical with length of lens unit), and k is circular cone whose conic coefficient; When k-factor is less than-1, face shape curve is hyperbolic curve, is para-curve when equaling-1, is oval time between-1 to 0, for circular when equaling 0, for oblate when being greater than 0; α
1to α
8represent the coefficient corresponding to each radial coordinate respectively.
4. the kind of high image quality miniature Liar of a kind of all-plastic lens arrangement according to claim 3, it is characterized in that: the first lens are towards image space second aspheric hyperbola, require that its k-factor is for being less than-1, first lens are oblate aspheric surface towards the first surface aspherical shape of object space, and its k-factor is for being greater than 0; Second lens are oblate aspheric surface towards the first surface aspheric surface of object space, and k-factor is for being greater than 0, and the second lens are hyperbola towards second aspherical shape of image space, and its k-factor is less than-1.
5. the kind of high image quality miniature Liar of a kind of all-plastic lens arrangement according to claim 1 and 2, is characterized in that: the distance between described first lens and the second lens mirror is H, wherein 0 < H≤1mm.
6. the kind of high image quality miniature Liar of a kind of all-plastic lens arrangement according to claim 1 and 2, is characterized in that: the periphery trimming shape of described first lens is run-track shaped.
7. the kind of high image quality miniature Liar of a kind of all-plastic lens arrangement according to claim 1 and 2, is characterized in that: described second lens are less than 3mm towards the radius-of-curvature of second face (52) of image planes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310289450.2A CN103345045B (en) | 2013-07-10 | 2013-07-10 | A kind of kind of high image quality miniature Liar of all-plastic lens arrangement |
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| CN201310289450.2A CN103345045B (en) | 2013-07-10 | 2013-07-10 | A kind of kind of high image quality miniature Liar of all-plastic lens arrangement |
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| Publication Number | Publication Date |
|---|---|
| CN103345045A CN103345045A (en) | 2013-10-09 |
| CN103345045B true CN103345045B (en) | 2015-08-19 |
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|---|---|---|---|
| CN201310289450.2A Active CN103345045B (en) | 2013-07-10 | 2013-07-10 | A kind of kind of high image quality miniature Liar of all-plastic lens arrangement |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572846A (en) * | 2016-02-19 | 2016-05-11 | 南京昂驰光电科技有限公司 | Novel micro optical lens |
| CN105549182A (en) * | 2016-02-19 | 2016-05-04 | 南京昂驰光电科技有限公司 | Novel miniature optical lens set |
| CN106997083A (en) * | 2017-06-12 | 2017-08-01 | 浙江舜宇光学有限公司 | Camera lens and the camera module comprising the camera lens |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3717486B2 (en) * | 2003-03-10 | 2005-11-16 | フジノン株式会社 | Imaging lens |
| CN201199275Y (en) * | 2008-04-29 | 2009-02-25 | 浙江舜宇光学有限公司 | Minitype taking lens |
| CN101986183B (en) * | 2009-07-29 | 2012-06-20 | 比亚迪股份有限公司 | Optical lens assembly |
| CN203376515U (en) * | 2013-07-10 | 2014-01-01 | 中山联合光电科技有限公司 | Miniature infrared wide-angle optical lens |
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2013
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Owner name: ZHONGSHAN LIANHE PHOTOELECTRIC TECHNOLOGY CO., LTD Free format text: FORMER NAME: ZHONGSHAN UNION OPTIC CO., LTD. |
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Address after: 528400 Zhongshan Torch Development Zone, Guangdong Road, No. 10 Patentee after: Zhong Shan joint opto-electronic Science and Technology Co., Ltd. Address before: 528400 Guangdong province Zhongshan Dongli Torch Development Zone torch joint electronic city building A3 Patentee before: Union Optech (Zhongshan) Co., Ltd. |