CN103926674B - miniaturized lens - Google Patents
miniaturized lens Download PDFInfo
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- CN103926674B CN103926674B CN201310011443.6A CN201310011443A CN103926674B CN 103926674 B CN103926674 B CN 103926674B CN 201310011443 A CN201310011443 A CN 201310011443A CN 103926674 B CN103926674 B CN 103926674B
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Abstract
A miniaturized lens comprises a first lens body, a second lens body, an aperture, a third lens body, a fourth lens body and a fifth lens body, wherein the first lens body, the second lens body, the aperture, the third lens body, the fourth lens body and the fifth lens body are sequentially arrayed from an object side to an imaging plane along an optical axis. The first lens body is a convex-concave lens body with negative refractive power, the convex surface of the first lens body faces towards the object side, the concave surface of the first lens body faces towards the imaging plane, and the two surfaces of the first lens body are both aspheric surfaces. The surface, facing towards the object side, of the second lens body is the convex surface, and the two surfaces of the second lens body are both aspheric surfaces. The third lens body is a dual-convex lens body with positive refractive power. The fourth lens body is a dual-convex lens body with positive refractive power. The fifth lens body is a lens body with negative refractive power, and the surface, facing towards the object side, of the fifth lens body is the concave surface.
Description
Technical field
The present invention is relevant with optical lens, and a kind of miniaturization camera lens is referred in more detail.
Background technology
In recent years, flourishing due to running gear, the related market demand for promoting digital camera module.In order to carry
For the convenience and portability of running gear, market is generally wished in the case where quality is maintained, is sent out towards miniaturization, lightweight
Exhibition.
At present, the photosensory assembly of general photographing module, can be divided mainly into photosensitive coupling component (Charge coupled
Device, CCD) and complementary metal oxide silicon (Complementary Metal Oxide Semiconductor,
CMOS), wherein because CMOS possess low cost, low consumption electrically with high conformability, allow CMOS to be increasingly becoming running gear sense on market
The main flow of optical assembly.Further, since the progress of semiconductor process technique so that pixel size can be greatly reduced, this profit is because can
Photosensory assembly is allowed to provide the image of higher pixel, but also because reducing elemental area so that enter light quantity reduction, lens system certainly will be needed
System provides more high brightness to reduce influence of noise.
With the miniaturization of these image documentation equipments in recent years, above-mentioned image capturing device and apply in above-mentioned image documentation equipment
On camera lens volume, also significantly reduced.Further, since the pixel (pixel) of image capturing device is more and more high, to
The camera lens for coordinating these image capturing devices to use, will also have higher optical performance, can just make these image captures
Equipment reaches representing for high-resolution and high-contrast.Therefore, miniaturization and high optical performance, are that the camera lens of image documentation equipment can not
Lack two important documents.
In addition, the miniaturization camera lens that current image documentation equipment is adopted, gradually develops toward Radix Rumiciss, but wide angle system often has
Distortion and aberration problem, and easily affect its quality of image.In addition, under the consideration of reduces cost, market is more with plastics replacement
Glass, but plastic material is more sensitive for temperature change, and its easy temperature influence of imaging is caused, and have the quality of image not
Stable shortcoming.
The content of the invention
It is an object of the invention to provide a kind of miniaturization camera lens, with effectively improve the distortion that wide angle system is often had with
Aberration problem, and in the case where low cost considers, while can also reduce the sensitivity of its temperature.
For achieving the above object, the miniaturization camera lens that the present invention is provided, includes by a thing side to an imaging surface and along one
Optical axis sequential：
One first eyeglass, is the convexoconcave lenss person with negative refractive power, and it is convex surface facing the thing side, and concave surface direction should
Imaging surface, and its two sides is all non-spherical surface；
One second eyeglass, it is convex surface towards the surface of the thing side, and its two sides is all non-spherical surface；
One aperture；
One the 3rd eyeglass, is the biconvex lens with positive refractive power；
One the 4th eyeglass, is the biconvex lens with positive refractive power；And
One the 5th eyeglass, be with negative refractive power, and towards the thing side surface be concave surface.
Described miniaturization camera lens, satisfaction has following condition：
0.1 ＜ f/TTL ＜ 0.2；
Wherein, f is the system focal of the miniaturization camera lens；TTL is the system overall length of the miniaturization camera lens.
Described miniaturization camera lens, satisfaction has following condition：
0.5 ＜ f/f3＜ 2；
Wherein, f is the system focal of the miniaturization camera lens；f3For the focal length of the 3rd eyeglass.
Described miniaturization camera lens, satisfaction has following condition：
vd4–vd5＞ 20；
Wherein, vd4For the abbe number of the 4th eyeglass；vd5For the abbe number of the 5th eyeglass.
Described miniaturization camera lens, wherein, second eyeglass has positive refractive power.
Described miniaturization camera lens, wherein, second eyeglass has negative refractive power.
Described miniaturization camera lens, wherein, second eyeglass is convexoconcave lenss.
Described miniaturization camera lens, wherein, first eyeglass is made of with plastic material with second eyeglass.
Described miniaturization camera lens, wherein, a 3rd eyeglass at least surface is non-spherical surface.
Described miniaturization camera lens, wherein, the 3rd eyeglass is made of with glass material.
Described miniaturization camera lens, wherein, the 3rd eyeglass is made of with plastic material.
Described miniaturization camera lens, wherein, a 4th eyeglass at least surface is non-spherical surface.
Described miniaturization camera lens, wherein, the 5th eyeglass is a biconcave lenss.
Described miniaturization camera lens, wherein, the 5th eyeglass is a convexoconcave lenss.
Described miniaturization camera lens, wherein, a 5th eyeglass at least surface is non-spherical surface.
Described miniaturization camera lens, wherein, the 4th eyeglass should with the 5th eyeglass direction towards the surface of the imaging surface
The surface gluing of thing side.
Described miniaturization camera lens, wherein, the 4th eyeglass and the 5th eyeglass are made of with glass material.
Described miniaturization camera lens, wherein, the 4th eyeglass and the 5th eyeglass are made of with plastic material.
The miniaturization camera lens that the present invention is provided, in addition to it can provide the demand of miniaturization and high light quantity, also can effectively improve
The distortion that wide angle system is often had and aberration problem, and in the case where low cost considers, while can also reduce the sensitivity of its temperature.
Description of the drawings
Fig. 1 is the eyeglass figure of the first preferred embodiment of the invention；
Fig. 2A (1)-Fig. 2A (3) is the curvature of field figure of the first preferred embodiment of the invention；
Fig. 2 B are the distortion figure of the first preferred embodiment of the invention；
Fig. 2 C are the lateral chromatic aberration figure of the first preferred embodiment of the invention；
Fig. 3 is the eyeglass figure of the second preferred embodiment of the invention；
Fig. 4 A (1)-Fig. 4 A (3) are the curvature of field figure of the second preferred embodiment of the invention；
Fig. 4 B are the distortion figure of the second preferred embodiment of the invention；
Fig. 4 C are the lateral chromatic aberration figure of the second preferred embodiment of the invention；
Fig. 5 is the eyeglass figure of the 3rd preferred embodiment of the invention；
Fig. 6 A (1)-Fig. 6 A (3) are the curvature of field figure of the 3rd preferred embodiment of the invention；
Fig. 6 B are the distortion figure of the 3rd preferred embodiment of the invention；
Fig. 6 C are the lateral chromatic aberration figure of the 3rd preferred embodiment of the invention.
Primary clustering symbol description in accompanying drawing：
1 miniaturization camera lens
The eyeglasses of L1 first, the eyeglasses of L2 second, the eyeglasses of L3 the 3rd, the eyeglasses of L4 the 4th, the eyeglasses of L5 the 5th, ST apertures, Z optical axises,
CF optical filters, Im imaging surfaces, S1～S13 faces；
2 miniaturization camera lenses
The eyeglasses of L1 first, the eyeglasses of L2 second, the eyeglasses of L3 the 3rd, the eyeglasses of L4 the 4th, the eyeglasses of L5 the 5th, ST apertures, Z optical axises,
CF optical filters, Im imaging surfaces, S1～S13 faces；
3 miniaturization camera lenses
The eyeglasses of L1 first, the eyeglasses of L2 second, the eyeglasses of L3 the 3rd, the eyeglasses of L4 the 4th, the eyeglasses of L5 the 5th, ST apertures, Z optical axises,
CF optical filters, Im imaging surfaces, S1～S13 faces.
Specific embodiment
The miniaturization camera lens that the present invention is provided, is made up of, except the need that can provide miniaturization and high light quantity five lens
Ask outer, also can effectively improve the distortion and aberration problem often having to wide angle system, and in the case where low cost considers, while also can drop
The sensitivity of low its temperature.
Miniaturization camera lens provided by the present invention, includes by a thing side to an imaging surface and along an optical axis sequential
One first eyeglass, one second eyeglass, an aperture, one the 3rd eyeglass, one the 4th eyeglass and one the 5th eyeglass.Wherein, this first
Eyeglass is the convexoconcave lenss person with negative refractive power, and it is convex surface facing the thing side, and concave surface is towards the imaging surface, and its two sides
It is all non-spherical surface；Second eyeglass is convex surface towards the surface of the thing side, and its two sides is all non-spherical surface；3rd
Eyeglass is the biconvex lens with positive refractive power；4th eyeglass is the biconvex lens with positive refractive power；5th eyeglass is
With negative refractive power, and towards the thing side surface be concave surface.
Thus, by above-mentioned optical design, the miniaturization camera lens just can be caused to there is small volume, have Radix Rumiciss, optics abnormal
Diminish and high optical performance effect.
For the present invention can be illustrated more clearly that, lifts preferred embodiment and coordinate accompanying drawing to describe in detail as after.
Fig. 1 is referred to, the miniaturization camera lens 1 of the first preferred embodiment of the invention includes along an optical axis Z and by a thing side
One first eyeglass L1, one second eyeglass L2, an aperture ST, one the 3rd eyeglass L3 to an imaging surface Im sequentials, one the 4th
Eyeglass L4 and one the 5th eyeglass L5.In addition, according to using upper demand, can also set between the 5th eyeglass L5 and imaging surface Im
An optical filter (Color Filter) CF is equipped with, to filter out unnecessary noise light, and the mesh of improving optical efficiency is can reach
's.Wherein：
First eyeglass L1 be with negative refractive power and with convexoconcave lenss made by plastic material, and its convex surface S1 towards should
Thing side, and concave surface S2 is towards imaging surface Im, so that the miniaturization camera lens 1 has the optical characteristics of Radix Rumiciss.In addition, first mirror
Two sides S1, S2 of piece L1 is all non-spherical surface, and aspheric purpose of design, it is can effectively to correct the miniaturization camera lens
1 aberration problems easily occurred when wide angle optical is designed.
Second eyeglass L2 be with positive refractive power and with convexoconcave lenss made by plastic material, and its convex surface S3 towards should
Thing side, and concave surface S4 is towards the imaging surface, and its two sides S3, S4 are all non-spherical surface.The structure of above-mentioned second eyeglass L2
The purpose of design, is to aid in first eyeglass L1 to correct the aberration problems of the miniaturization camera lens 1, and while also can correct this
The aberration that one eyeglass L1 is produced.
Aperture ST is can to efficiently reduce light located at the purpose between the second eyeglass L2 and the 3rd eyeglass L3
Into after the miniaturization camera lens 1, the angle being projeced on imaging surface Im, and can effectively lift imaging surface Im enter light
Amount, to shorten the distance between imaging surface Im and those eyeglasses L1～L5, and then effectively achieves the purpose of miniaturization.Separately
Outward, in addition to above-mentioned mesh, aperture ST is located between the second eyeglass L2 and the 3rd eyeglass L3, can also make the miniaturization camera lens
The 1 eyeglass arrangement before and after aperture ST is presented more symmetrical design, and can reduce sensitivity when manufacturing.
3rd eyeglass L3 is that, with positive refractive power and with biconvex lens made by plastic material, and its two sides S6, S7 are all
For non-spherical surface.The purpose of the structure design of above-mentioned 3rd eyeglass L3, is the whole optics for providing the miniaturization camera lens 1
The main refractive power of system.
4th eyeglass L4 is that, with positive refractive power and with biconvex lens made by glass material, and its two sides S8, S9 are all
For spherical face.The purpose of the structure design of above-mentioned 4th eyeglass L4, be using its positive refractive power optical characteristics and its
Its eyeglass L1～L3, L5 collocation, and can effectively shorten the system overall length of the miniaturization camera lens 1, and then reach the mesh of miniaturization
's.
5th eyeglass L5 is and its two sides S10, S11 with negative refractive power and with biconcave lenss made by glass material
It is all spherical face.In addition, the 5th eyeglass L5 is towards the surface S10 and the 4th eyeglass L4 of the thing side towards imaging surface Im
Surface S9 gluings, and be in gapless design.The purpose of the structure design of above-mentioned 5th eyeglass L5, is negative in the wrong using it
The optical characteristics of luminous power are arranged in pairs or groups with the optical characteristics of the positive refractive power of the 4th eyeglass L4, and can effectively correct the miniaturization mirror
The 1 aberration problem being likely to occur, and then lift the optical performance of the miniaturization camera lens 1.
In addition, in addition to the structure design of above-mentioned those eyeglasses L1～L5, the miniaturization camera lens 1 also meets following condition：
1) 0.1 ＜ f/TTL ＜ 0.2；
2) 0.5 ＜ f/f3＜ 2；
3)vd4–vd5＞ 20；
Wherein, f is the system focal of the miniaturization camera lens 1；TTL is the system overall length of the miniaturization camera lens 1；f3For this
The focal length of three eyeglass L3；vd4For the abbe number of the 4th eyeglass L4；vd5For the abbe number of the 5th eyeglass L5.
Thus, by the design of above-mentioned 1st, and can enable the miniaturization camera lens 1 that there is Radix Rumiciss and short system overall length
Advantage.The design of the 2nd is that the whole optical system for controlling the miniaturization camera lens 1 by the 3rd eyeglass L3 is main bends
Luminous power.And the design of the 3rd is the collocation of the abbe number by the 4th eyeglass L4 Yu the 5th eyeglass L5, and can be effective
Ground eliminates the aberration of the miniaturization camera lens 1, and then lifts the image quality of the miniaturization camera lens 1.
It is up to above-mentioned purpose and effectively lifts the optical performance of the miniaturization camera lens 1, the first preferred embodiment of the invention
Radius of curvature R, each mirror that the system focal f of miniaturization camera lens 1, system overall length TTL, the optical axis Z of each lens surface pass through place
Face with next minute surface (or imaging surface Im) on optical axis Z apart from D, refractive index Nd of each eyeglass, the Abbe number Vd of each eyeglass,
With the focal length f of each eyeglass1～f5, as shown in Table 1.
In each lens of the present embodiment, the surface indentation degree z of those non-spherical surfaces S1, S2, S3, S4, S6 and S7 by
Obtained by following equation：
Wherein,
z：The depression degree of non-spherical surface；
c：The inverse of radius of curvature；
h：The aperture radius on surface；
k：Circular cone coefficient；
α2～α8：Each level number of aperture radius h on surface.
In the present embodiment, the asphericity coefficients k of each non-spherical surface and each rank factor alpha2～α8, as shown in Table 2.
Configured by above-mentioned eyeglass L1～L5 and aperture ST so that the miniaturization camera lens 1 of the present embodiment is in image quality
Also can reach requirement, this C can find out from Fig. 2A to Fig. 2, wherein, can be seen that by Fig. 2A (1)-Fig. 2A (3), the present embodiment it is small-sized
Change the maximum curvature of field of the camera lens 1 when 0 DEG C and be less than -0.16mm and 0.02mm, maximum curvature of field when 25 DEG C is less than -0.12mm
And 0.06mm, maximum curvature of field when 50 DEG C is less than -0.06mm and 0.16mm；Can be seen that by Fig. 2 B, the present embodiment it is small-sized
The maximum distortion amount for changing camera lens 1 is less than -6% and 3%；Can be seen that by Fig. 2 C, the lateral chromatism of the miniaturization camera lens 1 of the present embodiment
Difference is less than 9 μm, and the optical performance of the miniaturization camera lens 1 of obvious the present embodiment is standard compliant.
The above, is the miniaturization camera lens 1 of first embodiment of the invention；According to the technology of the present invention, below coordinate Fig. 3
Illustrate the miniaturization camera lens 2 of second embodiment of the invention.
The miniaturization camera lens 2 of the second preferred embodiment of the invention equally includes along an optical axis Z and by a thing side to one one-tenth
One first eyeglass L1 of image planes Im sequential, one second eyeglass L2, an aperture ST, one the 3rd eyeglass L3, one the 4th eyeglass L4,
One a 5th eyeglass L5 and optical filter CF.Wherein：
First eyeglass L1 be with negative refractive power and with convexoconcave lenss made by plastic material, and its convex surface S1 towards should
Thing side, and concave surface S2 is towards imaging surface Im, and two sides S1, S2 are all non-spherical surface so that the miniaturization camera lens 2 have it is wide
The optical characteristics at angle, and aspheric design can also effectively correct the miniaturization camera lens 2 and easily go out when wide angle optical is designed
Existing aberration problems.
Second eyeglass L2 be with positive refractive power and with convexoconcave lenss made by plastic material, and its convex surface S3 towards should
Thing side, and concave surface S4 is towards imaging surface Im, and its two sides S3, S4 are all non-spherical surface.Second eyeglass L2 is to aid in
First eyeglass L1 corrects the aberration problems of the miniaturization camera lens 2, and while corrects the aberration of first eyeglass L1 generations.
Aperture ST is communicated with the purpose between the 3rd eyeglass L3 located at the second eyeglass L2 with previous embodiment, is
Can efficiently reduce the angle that light enters to be projeced on imaging surface Im, and the miniaturization camera lens 2 can be made before and after aperture ST
Lens design more symmetrical design is presented, and can effectively lift entering light quantity, shortening imaging surface Im for imaging surface Im
With the distance between those eyeglasses L1～L5 and sensitivity when reducing manufacture.
3rd eyeglass L3 is that, with positive refractive power and with biconvex lens made by plastic material, and its two sides S6, S7 are all
For non-spherical surface, to the refractive power that the whole optical system for providing the miniaturization camera lens 2 is main.
4th eyeglass L4 is that, with positive refractive power and with biconvex lens made by plastic material, and its two sides S8, S9 are all
For non-spherical surface, to the optical characteristics using its positive refractive power and other eyeglasses L1～L3, L5 collocation, and can effectively contract
The system overall length of the short miniaturization camera lens 2, and then reach the purpose of miniaturization.
5th eyeglass L5 is and its concave surface S10 directions with negative refractive power and with convexoconcave lenss made by plastic material
The thing side, and convex surface S11, towards imaging surface Im, two sides S10, S11 are all non-spherical surface, to using its negative refractive power
Optical characteristics are arranged in pairs or groups with the optical characteristics of the positive refractive power of the 4th eyeglass L4, and effectively correcting the miniaturization camera lens 2 may go out
Existing aberration problem, and then lift the optical performance of the miniaturization camera lens 2.
In addition, in addition to the structure design of above-mentioned those eyeglasses L1～L5, the miniaturization camera lens 2 of second embodiment is equally full
Foot has following condition, and the miniaturization camera lens 2 can be enabled to have Radix Rumiciss, short system overall length, can efficiently control whole optics
The main refractive power of system and effectively eliminate the miniaturization camera lens 2 aberration effect：
1) 0.1 ＜ f/TTL ＜ 0.2；
2) 0.5 ＜ f/f3＜ 2；
3)vd4–vd5＞ 20；
Wherein, f is the system focal of the miniaturization camera lens 2；TTL is the system overall length of the miniaturization camera lens 2；f3For this
The focal length of three eyeglass L3；vd4For the abbe number of the 4th eyeglass L4；vd5For the abbe number of the 5th eyeglass L5.
To realize the purpose of the present invention and effectively lift the optical performance of the miniaturization camera lens, the present invention second is preferably real
Apply the radius of curvature that the system focal f of the miniaturization camera lens 2 of example, system overall length TTL, the optical axis Z of each lens surface pass through place
R, each minute surface with next minute surface (or imaging surface Im) on optical axis Z apart from D, refractive index Nd of each eyeglass, each eyeglass Abbe
The focal length f of coefficient Vd and each eyeglass1～f5, as shown in Table 3.
In each lens of the present embodiment, those non-spherical surfaces S1, S2, S3, S4, S6, S7, S8, S9, S10 and S11's
Obtained by surface indentation degree z is by following equation：
Wherein,
z：The depression degree of non-spherical surface；
c：The inverse of radius of curvature；
h：The aperture radius on surface；
k：Circular cone coefficient；
α2～α8：Each level number of aperture radius h on surface.
In the present embodiment, the asphericity coefficients k of each non-spherical surface and each rank factor alpha2～α8, as shown in Table 4.
Configured by above-mentioned eyeglass L1～L5 and aperture ST so that the miniaturization camera lens 2 of the present embodiment is in image quality
Also can reach requirement, this can find out from Fig. 4 A to Fig. 4 C, wherein, can be seen that by Fig. 4 A (1)-Fig. 4 A (3), the present embodiment it is small-sized
Change the maximum curvature of field of the camera lens 2 when 0 DEG C and be less than -0.18mm and 0.02mm, maximum curvature of field when 25 DEG C is less than -0.14mm
And 0.04mm, maximum curvature of field when 50 DEG C is less than -0.10mm and 0.08mm；Can be seen that by Fig. 4 B, the present embodiment it is small-sized
The maximum distortion amount for changing camera lens 2 is less than -8% and 3%；Can be seen that by Fig. 4 C, the lateral chromatism of the miniaturization camera lens 2 of the present embodiment
Difference is less than 7.5 μm, and the optical performance of the miniaturization camera lens 2 of obvious the present embodiment is standard compliant.
In addition, in addition to the miniaturization camera lens 1,2 of above-mentioned first embodiment and second embodiment, Fig. 5 is referred to, the present invention the
The miniaturization camera lens 3 of three preferred embodiments equally includes along an optical axis Z and by a thing side to an imaging surface Im sequentials
One first eyeglass L1, one second eyeglass L2, an aperture ST, one the 3rd eyeglass L3, one the 4th eyeglass L4, one the 5th eyeglass L5 and
One optical filter CF.Wherein：
First eyeglass L1 be with negative refractive power and with convexoconcave lenss made by plastic material, and its convex surface S1 towards should
Thing side, and concave surface S2 is towards imaging surface Im, and two sides S1, S2 are all non-spherical surface so that the miniaturization camera lens 3 have it is wide
The optical characteristics at angle, and aspheric design can also effectively correct the miniaturization camera lens 3 and easily go out when wide angle optical is designed
Existing aberration problems.
Second eyeglass L2 be with negative refractive power and with convexoconcave lenss made by plastic material, and its convex surface S3 towards should
Thing side, and concave surface S4 is towards imaging surface Im, and its two sides S3, S4 are all non-spherical surface.Second eyeglass L2 is to aid in
First eyeglass L1 corrects the aberration problems of the miniaturization camera lens 3, and while corrects the aberration of first eyeglass L1 generations.
Aperture ST is located at the purpose between the second eyeglass L2 and the 3rd eyeglass L3 also in can effectively subtract
Few light is projeced into the angle on imaging surface Im, and can make lens design of the miniaturization camera lens 3 before and after aperture ST be in
Now more symmetrical design, and can effectively lift entering light quantity, shortening imaging surface Im and those eyeglasses L1 for imaging surface Im
Sensitivity when the distance between～L5 and reduction manufacture.
3rd eyeglass L3 is that, with positive refractive power and with biconvex lens made by glass material, and its two sides S6, S7 are all
For spherical face, to the refractive power that the whole optical system for providing the miniaturization camera lens 3 is main, and by using glass material
Design, can more efficiently control the sensitivity of the miniaturization camera lens 3 to temperature.
4th eyeglass L4 is that, with positive refractive power and with biconvex lens made by plastic material, and its two sides S8, S9 are all
For non-spherical surface, to the optical characteristics using its positive refractive power and other eyeglasses L1～L3, L5 collocation, and can effectively contract
The system overall length of the short miniaturization camera lens 3, and then reach the purpose of miniaturization.
5th eyeglass L5 is that, with negative refractive power and with biconcave lenss made by plastic material, and two sides S10, S11 are all
For non-spherical surface, take with the optical characteristics of the positive refractive power of the 4th eyeglass L4 to the optical characteristics using its negative refractive power
With correcting the aberration problem that is likely to occur of the miniaturization camera lens 3.
In addition, in addition to the structure design of above-mentioned those eyeglasses L1～L5, the miniaturization camera lens 3 of 3rd embodiment is equally full
Foot has following condition, and the miniaturization camera lens can be enabled to have Radix Rumiciss, short system overall length, can efficiently control whole optical system
The effect of the main refractive power of system and the aberration for effectively eliminating the miniaturization camera lens 3：
1) 0.1 ＜ f/TTL ＜ 0.2；
2) 0.5 ＜ f/f3＜ 2；
3)vd4–vd5＞ 20；
Wherein, f is the system focal of the miniaturization camera lens 3；TTL is the system overall length of the miniaturization camera lens 3；f3For this
The focal length of three eyeglass L3；vd4For the abbe number of the 4th eyeglass L4；vd5For the abbe number of the 5th eyeglass L5.
To realize the purpose of the present invention and effectively lifting the optical performance of the miniaturization camera lens 3, the present invention the 3rd is preferably real
Apply the radius of curvature that the system focal f of the miniaturization camera lens 3 of example, system overall length TTL, the optical axis Z of each lens surface pass through place
R, each minute surface with next minute surface (or imaging surface Im) on optical axis Z apart from D, refractive index Nd of each eyeglass, each eyeglass Abbe
The focal length f of coefficient Vd and each eyeglass1～f5, as shown in Table 3.
In each lens of the present embodiment, the surface of those non-spherical surfaces S1, S2, S3, S4, S8, S9, S10 and S11 is recessed
Obtained by degree z is fallen into by following equation：
Wherein,
z：The depression degree of non-spherical surface；
c：The inverse of radius of curvature；
h：The aperture radius on surface；
k：Circular cone coefficient；
α2～α8：Each level number of aperture radius h on surface.
In the present embodiment, the asphericity coefficients k of each non-spherical surface and each rank factor alpha2～α8, as shown in Table 6.
Configured by above-mentioned eyeglass L1～L5 and aperture ST so that the miniaturization camera lens 3 of the present embodiment is in image quality
Also can reach requirement, this can find out from Fig. 6 A to Fig. 6 C, wherein, can be seen that by Fig. 6 A (1)-Fig. 6 A (3), the present embodiment it is small-sized
Change the maximum curvature of field of the camera lens 3 when 0 DEG C and be less than -0.08mm and 0.02mm, maximum curvature of field when 25 DEG C is less than -0.10mm
And 0.02mm, maximum curvature of field when 50 DEG C is less than -0.10mm and 0.02mm；Can be seen that by Fig. 6 B, the present embodiment it is small-sized
The maximum distortion amount for changing camera lens 3 is less than -2% and 1%；Can be seen that by Fig. 6 C, the lateral chromatism of the miniaturization camera lens 3 of the present embodiment
Difference is less than -1.5 μm and 4.5 μm, and the optical performance of the miniaturization camera lens 3 of obvious the present embodiment is standard compliant.
To be learnt more than comprehensive, the miniaturization camera lens 1～3 of the present invention not only small volume, more simultaneously with Radix Rumiciss, optics
Distortion is little and effect of high optical performance.In addition, the foregoing is only preferably possible embodiments of the invention, Ju Fanying
Changed with the equivalent structure carried out by description of the invention and claim, scope of the presently claimed invention ought to be included in
It is interior.
Table one
Table two
| Surface | k | α2 | α3 | α4 | α5 | α6 | α7 | α8 |
| S1 | 0.000000 | 0.000174 | -0.000010 | 0.000000 | -0.000000 | 0 | 0 | 0 |
| S2 | -0.854613 | -0.000250 | -0.000008 | -0.000004 | 0.000000 | 0 | 0 | 0 |
| S3 | -398.095496 | 0.000048 | -0.000098 | 0.000006 | -0.000000 | 0 | 0 | 0 |
| S4 | 0.000000 | 0.002952 | 0.001623 | -0.000728 | 0.000150 | 0 | 0 | 0 |
| S6 | 0.000000 | -0.001401 | 0.000447 | 0.000004 | -0.000003 | 0 | 0 | 0 |
| S7 | -0.927943 | 0.000033 | -0.000202 | 0.000041 | -0.000004 | 0 | 0 | 0 |
Table three
Table four
| Surface | k | α2 | α3 | α4 | α5 | α6 | α7 | α8 |
| S1 | 0.000000 | 0.000802 | -0.000349 | 0.000027 | -0.000001 | 0.000000 | 0 | 0 |
| S2 | -0.747391 | -0.000228 | 0.001367 | -0.001643 | -0.000078 | 0.000009 | 0 | 0 |
| S3 | -10.325418 | 0.028747 | -0.004191 | 0.000169 | 0.000013 | 0.000000 | 0 | 0 |
| S4 | 0.000000 | 0.068650 | 0.076095 | -0.135481 | -0.008466 | 0.000000 | 0 | 0 |
| S6 | 0.000000 | -0.020203 | 0.070289 | -0.152666 | 0.291864 | -0.232651 | 0 | 0 |
| S7 | -0.661205 | -0.015849 | -0.013589 | 0.014230 | -0.008844 | 0.002315 | 0 | 0 |
| S8 | 0.000000 | -0.006132 | -0.001412 | 0.001557 | -0.000099 | 0.000000 | 0 | 0 |
| S9 | 0.000000 | 0.004338 | 0.008231 | -0.000308 | 0.000360 | 0.000000 | 0 | 0 |
| S10 | 0.000000 | 0.023131 | 0.009418 | -0.000739 | 0.000132 | 0.000000 | 0 | 0 |
| S11 | 0.000000 | 0.027074 | -0.001721 | 0.000125 | -0.000041 | 0.000000 | 0 | 0 |
Table five
Table six
| Surface | k | α2 | α3 | α4 | α5 | α6 | α7 | α8 |
| S1 | 0.000000 | 0.000000 | 0.003177 | -0.000370 | 0.000029 | -0.000001 | 0.000000 | 0 |
| S2 | -0.443899 | 0.000000 | 0.003461 | 0.000270 | -0.000401 | 0.000092 | -0.000007 | 0 |
| S3 | -22.361359 | 0.000000 | 0.007850 | -0.002579 | 0.000365 | -0.000029 | 0.000000 | 0 |
| S4 | 0.000000 | 0.000000 | 0.004068 | 0.003475 | 0.000801 | 0.000193 | 0.000000 | 0 |
| S8 | 0.000000 | 0.000000 | -0.003732 | 0.001881 | 0.000057 | -0.000154 | 0.000000 | 0 |
| S9 | 0.000000 | 0.000000 | 0.024733 | -0.004342 | 0.000701 | -0.000104 | 0.000000 | 0 |
| S10 | 0.000000 | 0.000000 | 0.031317 | -0.011399 | 0.002546 | -0.000226 | 0.000000 | 0 |
| S11 | 0.000000 | 0.000000 | 0.024117 | -0.006308 | 0.001684 | -0.000140 | 0.000000 | 0 |
Claims (16)
1. a kind of miniaturization camera lens, includes by a thing side to an imaging surface and along an optical axis sequential：
One first eyeglass, is the convexoconcave lenss person with negative refractive power, and it is convex surface facing the thing side, and concave surface is towards the imaging
Face, and its two sides is all non-spherical surface；
One second eyeglass, it is convex surface towards the surface of the thing side, and its two sides is all non-spherical surface；
One aperture；
One the 3rd eyeglass, is the biconvex lens with positive refractive power；
One the 4th eyeglass, is the biconvex lens with positive refractive power；And
One the 5th eyeglass, be with negative refractive power, and towards the thing side surface be concave surface；
Wherein, second eyeglass is convexoconcave lenss；
Wherein, the miniaturization camera lens meets following condition：
0.1 ＜ f/TTL ＜ 0.2：
Wherein, f is the system focal of the miniaturization camera lens；TTL is the system overall length of the miniaturization camera lens.
2. a kind of miniaturization camera lens, includes by a thing side to an imaging surface and along an optical axis sequential：
One first eyeglass, is the convexoconcave lenss person with negative refractive power, and it is convex surface facing the thing side, and concave surface is towards the imaging
Face, and its two sides is all non-spherical surface；
One second eyeglass, it is convex surface towards the surface of the thing side, and its two sides is all non-spherical surface；
One aperture；
One the 3rd eyeglass, is the biconvex lens with positive refractive power；
One the 4th eyeglass, is the biconvex lens with positive refractive power；And
One the 5th eyeglass, be with negative refractive power, and towards the thing side surface be concave surface；
Wherein, second eyeglass is convexoconcave lenss；
Wherein, the miniaturization camera lens meets following condition：
0.5 ＜ f/f3＜ 2；
Wherein, f is the system focal of the miniaturization camera lens；f3For the focal length of the 3rd eyeglass.
3. a kind of miniaturization camera lens, includes by a thing side to an imaging surface and along an optical axis sequential：
One first eyeglass, is the convexoconcave lenss person with negative refractive power, and it is convex surface facing the thing side, and concave surface is towards the imaging
Face, and its two sides is all non-spherical surface；
One second eyeglass, it is convex surface towards the surface of the thing side, and its two sides is all non-spherical surface；
One aperture；
One the 3rd eyeglass, is the biconvex lens with positive refractive power；
One the 4th eyeglass, is the biconvex lens with positive refractive power；And
One the 5th eyeglass, be with negative refractive power, and towards the thing side surface be concave surface；
Wherein, second eyeglass is convexoconcave lenss；
Wherein, the miniaturization camera lens meets following condition：
vd4-vd5＞ 20；
Wherein, vd4For the abbe number of the 4th eyeglass；vd5For the abbe number of the 5th eyeglass.
4. miniaturization camera lens according to any one of claim 1 to 3, wherein, second eyeglass has positive refractive power.
5. miniaturization camera lens according to any one of claim 1 to 3, wherein, second eyeglass has negative refractive power.
6. miniaturization camera lens according to any one of claim 1 to 3, wherein, first eyeglass is with second eyeglass
Made with plastic material.
7. miniaturization camera lens according to any one of claim 1 to 3, wherein, a 3rd eyeglass at least surface is non-
Spherical face.
8. miniaturization camera lens according to any one of claim 1 to 3, wherein, the 3rd eyeglass is with glass material system
Into.
9. miniaturization camera lens according to any one of claim 1 to 3, wherein, the 3rd eyeglass is with plastic material system
Into.
10. miniaturization camera lens according to any one of claim 1 to 3, wherein, a 4th eyeglass at least surface is non-
Spherical face.
11. miniaturization camera lenses according to any one of claim 1 to 3, wherein, the 5th eyeglass is a biconcave lenss.
12. miniaturization camera lenses according to any one of claim 1 to 3, wherein, the 5th eyeglass is a convexoconcave lenss.
13. miniaturization camera lenses according to any one of claim 1 to 3, wherein, a 5th eyeglass at least surface is non-
Spherical face.
14. miniaturization camera lenses according to any one of claim 1 to 3, wherein, the 4th eyeglass is towards the imaging surface
The surface gluing of surface and the 5th eyeglass towards the thing side.
15. miniaturization camera lenses according to claim 14, wherein, the 4th eyeglass and the 5th eyeglass are with glass material
Make.
16. miniaturization camera lenses according to any one of claim 1 to 3, wherein, the 4th eyeglass is with the 5th eyeglass
Made with plastic material.
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| TWI631366B (en) * | 2014-08-27 | 2018-08-01 | 佳能企業股份有限公司 | Optical lens |
| CN106415352B (en) * | 2014-09-17 | 2018-04-27 | 大族激光科技产业集团股份有限公司 | Telecentric optics camera lens |
| TWI544250B (en) | 2014-11-26 | 2016-08-01 | 先進光電科技股份有限公司 | Five-piece lens set for capturing images |
| CN107065126A (en) * | 2016-12-23 | 2017-08-18 | 捷西迪（广州）光学科技有限公司 | A kind of lens devices |
| CN106908939B (en) * | 2017-05-04 | 2022-04-08 | 威海嘉瑞光电科技股份有限公司 | High-pixel wide-angle lens for smart home |
| JP6664853B2 (en) * | 2017-06-15 | 2020-03-13 | カンタツ株式会社 | Imaging lens |
| CN109324394B (en) * | 2017-07-31 | 2021-02-05 | 信泰光学(深圳)有限公司 | Wide-angle lens |
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| CN1841114A (en) * | 2005-03-31 | 2006-10-04 | 财团法人工业技术研究院 | Zooming lens |
| CN101819315A (en) * | 2009-02-27 | 2010-09-01 | 柯尼卡美能达精密光学株式会社 | Image pickup lens, image pickup apparatus, and mobile terminal |
| CN101859016A (en) * | 2009-04-03 | 2010-10-13 | 株式会社理光 | Wide-angle lens and image pick up equipment |
| CN101887164A (en) * | 2010-07-07 | 2010-11-17 | 福州开发区鸿发光电子技术有限公司 | Small-sized dual-band optical lens with large zooming ratio |
| CN102854611A (en) * | 2011-06-29 | 2013-01-02 | 亚洲光学股份有限公司 | Microminiature imaging lens |
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| US8760770B2 (en) * | 2011-03-15 | 2014-06-24 | Sony Corporation | Zoom lens and imaging apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1841114A (en) * | 2005-03-31 | 2006-10-04 | 财团法人工业技术研究院 | Zooming lens |
| CN101819315A (en) * | 2009-02-27 | 2010-09-01 | 柯尼卡美能达精密光学株式会社 | Image pickup lens, image pickup apparatus, and mobile terminal |
| CN101859016A (en) * | 2009-04-03 | 2010-10-13 | 株式会社理光 | Wide-angle lens and image pick up equipment |
| CN101887164A (en) * | 2010-07-07 | 2010-11-17 | 福州开发区鸿发光电子技术有限公司 | Small-sized dual-band optical lens with large zooming ratio |
| CN102854611A (en) * | 2011-06-29 | 2013-01-02 | 亚洲光学股份有限公司 | Microminiature imaging lens |
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