CN103969793B - Optical imaging lens and the electronic installation using the optical imaging lens - Google Patents
Optical imaging lens and the electronic installation using the optical imaging lens Download PDFInfo
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- CN103969793B CN103969793B CN201310697230.3A CN201310697230A CN103969793B CN 103969793 B CN103969793 B CN 103969793B CN 201310697230 A CN201310697230 A CN 201310697230A CN 103969793 B CN103969793 B CN 103969793B
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Abstract
The present invention discloses a kind of optical imaging lens and the electronic installation using the optical imaging lens.The optical imaging lens sequentially include first, second, 3rd, 4th and the 5th lens, first lens thing side has a convex surface part being located near optical axis, second lens thing side has a convex surface part being located near circumference, and image side surface has the concave part near circle of position week, 3rd lens image side surface has the convex surface part near an optical axis, 4th lens image side surface has a concave part being located near circumference, 5th lens refractive index be can just provide system positive refractive index and material be plastics, thing side has a convex surface part being located near circumference, there are optical imaging lens the lens of refractive index there was only above-mentioned five.The electronic installation includes casing and the image module in the casing, and the image module includes above-mentioned optical imaging lens, lens barrel, module rear seat unit and image sensor.The present invention can ensure that image quality by the collocation of lens face type.
Description
Technical field
The invention relates to a kind of optical lens, particularly relate to a kind of optical imaging lens and apply the optical imaging lens
The electronic installation of head.
Background technology
In recent years, it is considered to traffic safety, and to demands such as environmental surveillances, user to the angle of view of camera module will
Ask also increasing.
With photosensitive coupling component (Charge Coupled Device, CCD) or Complimentary Metal-Oxide semiconductor subassembly
The technological progress of (Complementary Metal-Oxide Semiconductor, CMOS), is worn on the light in camera module
Imaging lens must maintain favorable optical performance and length can not be long.
Wherein, patent US 7911711, US 20130057968 and US 20120307382, the angle of visual field is all smaller, it is impossible to
Meet the market demand.
Therefore, under conditions of favorable optical performance is maintained, the angle of visual field for how increasing camera lens is existing market demand.
The content of the invention
Therefore, the purpose of the present invention, that is, providing a kind of under conditions of the angle of visual field for increasing camera lens, still is able to possess good
The optical imaging lens of good optical property.
Then, optical imaging lens of the present invention, one first lens, one second are sequentially included from thing side to image side along an optical axis
Lens, one the 3rd lens, one the 4th lens, and one the 5th lens, and first lens to the 5th lens all include a direction
Thing side and make thing side that imaging light passes through and towards image side and the image side surface that passes through imaging light, wherein, this first
The thing side that the thing side of lens has a convex surface part for being located at optical axis near zone, second lens has one to be located at circle
The convex surface part of all near zones, and the image side surface has the concave part of circle of position week near zone, the image side of the 3rd lens
The image side surface that face has a convex surface part for optical axis near zone, the 4th lens has one to be located at the recessed of circumference near zone
Face, the refractive index of the 5th lens is for just, and material is plastics, and the thing side has a convex surface for being located at circumference near zone
Portion, wherein, there are the optical imaging lens lens of refractive index there was only above-mentioned five lens.
Effect of the invention is that the thing side of first lens has the convex surface part positioned at optical axis near zone,
Contribute to light optically focused to shorten lens length, the refractive index of the 5th lens is for just, it is possible to provide the positive refractive index of system, this
Outward, because the thing side that the thing side of first lens has the convex surface part of optical axis near zone, second lens has
Have the convex surface part of circumference near zone, the image side surface of second lens have circumference near zone the concave part, this
The image side surface of three lens have the convex surface part of optical axis near zone, the image side surface of the 4th lens have circumference nearby area
The concave part in domain, the thing side of the 5th lens have the convex surface part of circumference near zone, by taking for these face types
Match somebody with somebody, it can be ensured that image quality, and the material of the 5th lens is plastics, it is possible to decrease cost of manufacture, and mitigate the weight of camera lens.
Therefore, another object of the present invention, that is, providing a kind of electronic installation for being applied to foregoing optical imaging lens.
Then, electronic installation of the invention, comprising a casing, and an image module in the casing.The image
Module includes being used for the lens barrel, one that supply the optical imaging lens to set for supplying just like foregoing described optical imaging lens, one
The module rear seat unit that the lens barrel is set, and an image sensor for being arranged at the optical imaging lens image side.
The beneficial effect of electronic installation of the present invention is：Being loaded in the electronic installation has foregoing optical imaging lens
Image module, with the sharp imaging lens under conditions of the angle of visual field for increasing camera lens, still be able to provide good optical property
Advantage, more slim light and handy electronic installation is made in the case of optical property is not sacrificed, make the present invention have concurrently it is good
The structure design of Practical Performance and the angle of visual field for helping to increase camera lens, and can meet higher-quality consumption demand.
Brief description of the drawings
Other features of the invention and effect, will clearly be presented in implementation method referring to the drawings, wherein：
Fig. 1 is a schematic diagram, illustrates a lens arrangement；
Fig. 2 is a configuration schematic diagram, illustrates an embodiment one of optical imaging lens of the present invention；
Fig. 3 is every aberration diagram of longitudinal spherical aberration, astigmatic image error and the distortion aberration of the embodiment one；
Fig. 4 is a tabular drawing, illustrates the optical data of each lens of the embodiment one；
Fig. 5 is a tabular drawing, illustrates the asphericity coefficient of each lens of the embodiment one；
Fig. 6 is a schematic diagram, illustrates the reference axis of aspheric curve；
Fig. 7 is a configuration schematic diagram, illustrates an embodiment two of optical imaging lens of the present invention；
Fig. 8 is every aberration diagram of longitudinal spherical aberration, astigmatic image error and the distortion aberration of the embodiment two；
Fig. 9 is a tabular drawing, illustrates the optical data of each lens of the embodiment two；
Figure 10 is a tabular drawing, illustrates the asphericity coefficient of each lens of the embodiment two；
Figure 11 is a configuration schematic diagram, illustrates an embodiment three of optical imaging lens of the present invention；
Figure 12 is every aberration diagram of longitudinal spherical aberration, astigmatic image error and the distortion aberration of the embodiment three；
Figure 13 is a tabular drawing, illustrates the optical data of each lens of the embodiment three；
Figure 14 is a tabular drawing, illustrates the asphericity coefficient of each lens of the embodiment three；
Figure 15 is a configuration schematic diagram, illustrates an example IV of optical imaging lens of the present invention；
Figure 16 is every aberration diagram of longitudinal spherical aberration, astigmatic image error and the distortion aberration of the example IV；
Figure 17 is a tabular drawing, illustrates the optical data of each lens of the example IV；
Figure 18 is a tabular drawing, illustrates the asphericity coefficient of each lens of the example IV；
Figure 19 is a configuration schematic diagram, illustrates an embodiment five of optical imaging lens of the present invention；
Figure 20 is every aberration diagram of longitudinal spherical aberration, astigmatic image error and the distortion aberration of the embodiment five；
Figure 21 is a tabular drawing, illustrates the optical data of each lens of the embodiment five；
Figure 22 is a tabular drawing, illustrates the asphericity coefficient of each lens of the embodiment five；
Figure 23 is a configuration schematic diagram, illustrates a sixth embodiment of optical imaging lens of the present invention；
Figure 24 is every aberration diagram of longitudinal spherical aberration, astigmatic image error and the distortion aberration of the sixth embodiment；
Figure 25 is a tabular drawing, illustrates the optical data of each lens of the sixth embodiment；
Figure 26 is a tabular drawing, illustrates the asphericity coefficient of each lens of the sixth embodiment；
Figure 27 is a configuration schematic diagram, illustrates one the 7th embodiment of optical imaging lens of the present invention；
Figure 28 is every aberration diagram of longitudinal spherical aberration, astigmatic image error and the distortion aberration of the 7th embodiment；
Figure 29 is a tabular drawing, illustrates the optical data of each lens of the 7th embodiment；
Figure 30 is a tabular drawing, illustrates the asphericity coefficient of each lens of the 7th embodiment；
Figure 31 is a tabular drawing, illustrates embodiment one of the optical imaging lens to every optics of the sixth embodiment
Parameter；And
Figure 32 is a schematic cross-sectional view, illustrates an embodiment one of electronic installation of the present invention.
【Symbol description】
10 optical imaging lens
2 apertures
3 first lens
31 thing sides
311 convex surface parts
32 image side surfaces
4 second lens
41 thing sides
411 convex surface parts
412 concave parts
42 image side surfaces
421 concave parts
5 the 3rd lens
51 thing sides
511 concave parts
52 image side surfaces
521 convex surface parts
6 the 4th lens
61 thing sides
611 convex surface parts
612 concave parts
62 image side surfaces
621 concave parts
7 the 5th lens
71 thing sides
711 convex surface parts
72 image side surfaces
8 optical filters
81 thing sides
82 image side surfaces
9 imaging surfaces
I optical axises
1 electronic installation
11 casings
12 image modules
120 module rear seat units
121 camera lens back seats
122 image sensor back seats
130 image sensors
21 lens barrels
II axis
Specific embodiment
Before the present invention is described in detail, it shall be noted that in the following description content, similar component is with identical
Numbering represent.
" lens have positive refractive index (or negative refractive index) " that this specification is sayed, refers to that the lens are attached in optical axis
Near field has for positive refractive index (or negative refractive index)." the thing side (or image side surface) of a lens has positioned at certain region
Convex surface part (or concave part) " refers to the region compared to radially close to the exterior lateral area in the region, side of the court parallel to optical axis
For to more " outwardly convex " (or " caving inward "), by taking Fig. 1 as an example, wherein I is for optical axis and this lens is with optical axis I
For symmetry axis radially symmetrically, the thing side of the lens in a-quadrant there is convex surface part, B regions to have a concave part and C regions
With convex surface part, reason is a-quadrant compared to radially close to the exterior lateral area (i.e. B regions) in the region, court is parallel to light
The direction of axle more outwardly convex, B regions then more cave inward compared to C regions, and C regions are compared to E regions also similarly
Ground more outwardly convex." circumference near zone ", refers near the circumference of the curved surface only passed through for imaging light on lens
C regions in region, that is, figure, wherein, imaging light includes chief ray (chief ray) Lc and rim ray
(marginal ray)Lm." optical axis near zone " refers to the optical axis near zone of the curved surface for only passing through for imaging light, also
That is the a-quadrant in Fig. 1.Additionally, the lens also include an extension E, it is loaded in an optical imaging lens with for the lens group,
Preferably imaging light can't be by extension E, but the structure of extension E is not limited to this with shape, reality below
Example is applied to ask accompanying drawing succinctly to eliminate extension.
Refering to Fig. 2, an embodiment one of optical imaging lens of the present invention 10 is sequentially wrapped from thing side to image side along an optical axis I
Containing one first lens 3, one second lens 4, one the 3rd lens 5, an aperture 2, one the 4th lens 6, one the 5th lens 7, and a filter
Mating plate 8.
When the light sent by a thing to be captured enters the optical imaging lens 10, and via first lens 3, this
After two lens 4, the 3rd lens 5, the aperture 2, the 4th lens 6, the 5th lens 7, and the optical filter 8, can be at one one-tenth
Image planes 9 (Image Plane) form an image.The optical filter 8 is infrared filter (IR Cut Filter), for preventing
Infrared transmitting in light influences image quality to the imaging surface 9.
Supplementary notes, thing side is directed towards the side of the thing to be captured, and image side is directed towards the side of the imaging surface 9.
Illustrate herein, image sensor used in the present invention be using chip direct package (COB,
Chip on Board) packaged type or crystallite dimension encapsulation (CSP, Chip Scale Package) packaged type, so also may be used
It is other packaged types, is not disclosed with this and be limited.
Wherein, first lens 3, second lens 4, the 3rd lens 5, the 4th lens 6, the 5th lens 7, and should
Optical filter 8 all has one towards thing side and makes the thing side 31,41,51,61,71,81 that imaging light passes through respectively, and a direction
Image side and make the image side surface 32,42,52,62,72,82 that imaging light passes through.Wherein, in addition to the first lens 3, this is second saturating
Mirror 4, the 3rd lens 5, the 4th lens 6, the thing side 41,51,61,71 of the 5th lens 7 and image side surface 42,52,62,72
It is all aspherical.
First lens 3 have negative refractive index, and the thing side 31 is convex surface and has one to be located at the convex of optical axis I near zones
Face 311, the image side surface 32 is concave surface, and first lens 3 are the spherical mirror of glass material.
Second lens 4 have negative refractive index, and the thing side 41 is convex surface and has one to be located at the convex of circumference near zone
Face 411, the image side surface 42 is concave surface and has a concave part 421 for being located at circumference near zone, and second lens 4 are plastics
The aspherical mirror of material.
3rd lens 5 have positive refractive index, and the thing side 51 is concave surface and has the concave part of optical axis I near zones
511, the image side surface 52 is convex surface and has a convex surface part 521 for being located at optical axis I near zones, and the 3rd lens 5 are plastics material
The aspherical mirror of matter.
4th lens 6 have negative refractive index, and the thing side 61 is convex surface, and the image side surface 62 is concave surface and has one to be located at
The concave part 621 of circumference near zone, the 4th lens 6 are the aspherical mirror of plastic material.
5th lens 7 have positive refractive index, and the thing side 71 is convex surface and has one to be located at the convex of circumference near zone
Face 711, the image side surface 72 is convex surface, and the 5th lens 7 are the aspherical mirror of plastic material.
In the present embodiment one, only first lens 3, second lens 4, the 3rd lens 5, the 4th lens 6, should
5th lens 7 have refractive index.
Other detailed optical data of the embodiment one as shown in figure 4, and the embodiment one total system focal length
(effective focal length, abbreviation EFL) is 1.297mm, half angle of view (half field of view, abbreviation HFOV)
For 82.695 degree, f-number (Fno) are 2, its system length (TTL) is 35.002mm.Wherein, the system length refer to by this
The thing side 31 of one lens 3 to imaging surface 8 on the optical axis I between distance.
Additionally, from second lens 4, the 3rd lens 5, the 4th lens 6, the thing side 41 of the 5th lens 7,51,
61st, 71 and image side surface 42,52,62,72, eight faces are aspherical altogether, and this is aspherical to be defined according to following equation：
Wherein：
z：Aspherical depth (apart from optical axis is the point of y on aspherical, and is tangential on cutting for summit on aspherical optical axis
Face, vertical range between the two)；
c：The curvature (the vertex curvature) of aspheric vertex of surface；
K：Conical surface coefficient (Conic Constant)；
Radial distance (radial distance)
rn：Normalization radius (normalization radius, NRADIUS)；
u：r/rn；
am：M ranks QconCoefficient (the mth Qconcoefficient)；
Qm con：M ranks QconMultinomial (the mth Qconpolynomial)；
X, y, z relation is as shown in fig. 6, wherein z-axis is exactly optical axis I.
The detailed optical data of embodiment one as shown in figure 4, second lens 4 thing side 41 to the 5th lens 7 picture
Every asphericity coefficient of the side 72 in formula (1) is as shown in Figure 5.
In addition, the relation such as Figure 31 in the optical imaging lens 10 of the embodiment one between each important parameter and each important parameter
Belonging to middle embodiment one shown in field, wherein：
CT1 is center thickness of first lens 3 in optical axis I；
CT2 is center thickness of second lens 4 in optical axis I；
CT3 is center thickness of the 3rd lens 5 in optical axis I；
CT4 is center thickness of the 4th lens 6 in optical axis I；
CT5 is center thickness of the 5th lens 7 in optical axis I；
AC12 is first lens 3 to the air gap of the second lens 4 on optical axis I；
AC23 is the air gap of the second lens 4 to the 3rd lens 5 on optical axis I；
AC34 is the air gap of the 3rd lens 5 to the 4th lens 6 on optical axis I；
AC45 is the air gap of the 4th lens 6 to the 5th lens 7 on optical axis I；
EFL is the system focal length of the optical imaging lens 10；
BFL is the image side surface 72 of the 5th lens 7 to the distance of the imaging surface 9 on optical axis I.
Coordinate again refering to Fig. 3, the longitudinal spherical aberration (longitudinal for illustrating the first embodiment of (a)
Spherical aberration), (b) is then described separately the first embodiment relevant sagitta of arc on imaging surface 8 with the accompanying drawing of (c)
(sagittal) astigmatism of the astigmatic image error (astigmatism aberration) in direction, and meridian (tangential) direction
Aberration, the distortion aberration (distortion aberration) of the brief description of the drawings of (d) first embodiment on imaging surface 8.
This first embodiment in longitudinal spherical aberration pictorial image 3 (a), curve formed by each wavelength all very close to and in
Between be close to, illustrate that the Off-axis-light of each wavelength different height is all concentrated near imaging point, by the curve of each wavelength
Skewness magnitude level can be seen that the imaging point deviation of the Off-axis-light of different height is controlled in the range of ± 0.01mm, therefore the present embodiment
Really be obviously improved the spherical aberration of phase co-wavelength, additionally, three kinds to represent wavelength distance to each other also fairly close, represent different ripples
The image space of light long is quite concentrated, thus chromatic aberation is also obviously improved.
During Fig. 3 (b) is illustrated with two astigmatic image errors of 3 (c), three kinds represent focal length of the wavelength in whole field range and become
Change amount falls in ± 0.1mm, illustrates the optical system of this first embodiment and can effectively eliminate aberration.
And the distortion aberration accompanying drawing of Fig. 3 (d) then shows the distortion aberration of this first embodiment, this first embodiment is illustrated
Distortion aberration has met the image quality requirement of optical system.
This first embodiment is illustrated accordingly compared to existing optical lens, under conditions of being 82.695 degree in half angle of view, still
Preferably image quality can be provided, therefore this first embodiment can be under conditions of favorable optical performance be maintained, to increase camera lens
The product design of the angle of visual field.
It is an embodiment two of optical imaging lens of the present invention 10 refering to Fig. 7, it is substantially similar with the embodiment one, no
Have one to be located near the concave part 412 of optical axis I near zones and circumference with the thing side 41 that part is second lens 4
The convex surface part 411 in region, the thing sides 61 of the 4th lens 6 have a convex surface part 611 for being located at optical axis I near zones and
One concave part 612 for being located at circumference near zone.
Its detailed optical data as shown in figure 9, and the embodiment two total system focal length be 1.600mm, half angle of view
(HFOV) for 83.712 degree, f-number (Fno) be 2, system length then be 26.192mm.
As shown in Figure 10, then the image side surface of the 5th lens 7 is arrived for the thing side 41 of second lens 4 of the embodiment two
The 72 every asphericity coefficient in formula (1).
In addition, the relation in the optical imaging lens 10 of the embodiment two between each important parameter and each important parameter be as
In Figure 31 belonging to embodiment two shown in field.
Coordinate refer to Fig. 8, by the longitudinal spherical aberration of (a), (b), (c) astigmatic image error, and (d) distortion aberration accompanying drawing,
Can be seen that the present embodiment two can also maintain favorable optical performance.
It is an embodiment three of optical imaging lens of the present invention 10 refering to Figure 11, it is substantially similar with the embodiment one, no
With the thing side 61 that part is the 4th lens 6 there is a convex surface part 611 and for being located at optical axis I near zones to be located at circle
The concave part 612 of all near zones.
Its detailed optical data is as shown in figure 13, and the total system focal length of the embodiment three is 1.292mm, half angle of view
(HFOV) for 83.553 degree, f-number (Fno) be 2, system length then be 35.008mm.
As shown in figure 14, then the image side surface of the 5th lens 7 is arrived for the thing side 41 of second lens 4 of the embodiment three
The 72 every asphericity coefficient in formula (1).
In addition, the relation in the optical imaging lens 10 of the embodiment three between each important parameter and each important parameter be as
In Figure 31 belonging to embodiment three shown in field.
Coordinate refer to Figure 12, by the longitudinal spherical aberration of (a), (b), (c) astigmatic image error, and (d) distortion aberration accompanying drawing,
Can be seen that the present embodiment three can also maintain favorable optical performance.
It is an example IV of optical imaging lens of the present invention 10 refering to Figure 15, it is substantially similar with the embodiment two.Its
Detailed optical data is as shown in figure 17, and the total system focal length of the example IV is 1.518mm, and half angle of view (HFOV) is
84.843 degree, f-number (Fno) be 2, system length then be 32.830mm.
As shown in figure 18, then the image side surface of the 5th lens 7 is arrived for the thing side 41 of second lens 4 of the example IV
The 72 every asphericity coefficient in formula (1).
In addition, the relation in the optical imaging lens 10 of the example IV between each important parameter and each important parameter be as
In Figure 31 shown in the affiliated field of example IV.
Coordinate refer to Figure 16, by the longitudinal spherical aberration of (a), (b), (c) astigmatic image error, and (d) distortion aberration accompanying drawing,
Can be seen that the present embodiment four can also maintain favorable optical performance.
It is an embodiment five of optical imaging lens of the present invention 10 refering to Figure 19, it is substantially similar with the embodiment one.Its
Detailed optical data is as shown in figure 21, and the total system focal length of the embodiment five is 1.270mm, and half angle of view (HFOV) is
81.304 degree, f-number (Fno) be 2, system length then be 34.986mm.
As shown in figure 22, then the image side surface of the 5th lens 7 is arrived for the thing side 41 of second lens 4 of the embodiment five
The 72 every asphericity coefficient in formula (1).
In addition, the relation in the optical imaging lens 10 of the embodiment five between each important parameter and each important parameter be as
In Figure 31 belonging to embodiment five shown in field.
Coordinate refer to Figure 20, by the longitudinal spherical aberration of (a), (b), (c) astigmatic image error, and (d) distortion aberration accompanying drawing,
Can be seen that the present embodiment five can also maintain favorable optical performance.
It is an embodiment six of optical imaging lens of the present invention 10 refering to Figure 23, it is substantially similar with the embodiment one.Its
Detailed optical data is as shown in figure 25, and the total system focal length of the embodiment six is 1.219mm, and half angle of view (HFOV) is
83.164 degree, f-number (Fno) be 2, system length then be 34.998mm.
As shown in figure 26, then the image side surface of the 5th lens 7 is arrived for the thing side 41 of second lens 4 of the embodiment six
The 72 every asphericity coefficient in formula (1).
In addition, the relation in the optical imaging lens 10 of the embodiment six between each important parameter and each important parameter be as
In Figure 31 belonging to embodiment six shown in field.
Coordinate refer to Figure 24, by the longitudinal spherical aberration of (a), (b), (c) astigmatic image error, and (d) distortion aberration accompanying drawing,
Can be seen that the present embodiment six can also maintain favorable optical performance.
It is an embodiment seven of optical imaging lens of the present invention 10 refering to Figure 27, it is substantially similar with the embodiment one, no
Same is that the thing side 41 of second lens 4 has a concave part 412 for being located at optical axis I near zones, and area near a circumference
The convex surface part 411 in domain, the thing side 51 of the 3rd lens 5 is convex surface, and the thing side 61 of the 4th lens 6 is concave surface.
Its detailed optical data is as shown in figure 29, and the total system focal length of the embodiment seven is 1.343mm, half angle of view
(HFOV) for 83.6431 degree, f-number (Fno) be 2, system length then be 20.613mm.
As shown in figure 30, then the image side surface of the 5th lens 7 is arrived for the thing side 41 of second lens 4 of the embodiment seven
The 72 every asphericity coefficient in formula (1).
In addition, the relation in the optical imaging lens 10 of the embodiment seven between each important parameter and each important parameter be as
In Figure 31 belonging to embodiment seven shown in field.
Coordinate refer to Figure 28, by the longitudinal spherical aberration of (a), (b), (c) astigmatic image error, and (d) distortion aberration accompanying drawing,
Can be seen that the present embodiment seven can also maintain favorable optical performance.
Coordinate again refering to Figure 31, be the tabular drawing of every optical parametric of above-mentioned seven embodiments, when light of the present invention is studied
When the relational expression between every optical parametric in as camera lens 10 meets following condition formulae, in the case of the angle of visual field is improved, still
Preferably optical property performance is had, when the present invention is applied to related portable electronic devices, the product of more wide-angle can be made
Product：
(1)EFL/CT1≦2.50：The angle of visual field is contributed to expand because EFL shortens, and the optics of first lens 3 is effective
Footpath is larger, so the amplitude that CT1 shortens is smaller, therefore EFL shorten amplitude is larger and amplitude that CT1 shortens is smaller, it is preferably full
Foot 0.1≤EFL/CT1≤2.5.
(2)(AC12+AC45)/AC34≦8.50：Consider the path of light, when this conditional is met, have and preferably match somebody with somebody
Putting makes contraction in length, preferably meets 0.8≤(AC12+AC45)/AC34≤8.5.
(3)EFL/AC23≦0.7:Contribute to the angle of visual field to expand because EFL shortens, and consider the path of light, AC23 contractings
Short amplitude is limited by larger, thus EFL shorten amplitude is larger and amplitude that AC23 shortens is smaller, preferably meet 0.1
≦EFL/AC23≦0.7。
(4)BFL/AC34≦3.00:Because BFL shortens and contributes to the contraction in length of optical imaging lens 10, and considers light
Path, the amplitude that AC34 shortens limited by larger, thus BFL shorten amplitude is larger and the amplitude of AC34 shortenings is smaller,
Preferably meet 0.7≤BFL/AC34≤3.
(5)3.00≦(CT1+AC23)/CT5：Consider first lens 3 optics effective diameter is larger and path of light,
So the amplitude that CT1 and AC23 shortens is limited by larger, therefore the amplitude for shortening is smaller, and the optics of the 5th lens 7 has
Effect footpath is smaller, so the amplitude for shortening can preferably meet 3.00≤(CT1+AC23)/CT5≤15 with larger.
(6)CT3/CT1≦2.50：Because the optics effective diameter of the 3rd lens 5 is smaller, and the optics of first lens 3
Effective diameter is larger, thus CT3 shorten amplitude is larger and amplitude that CT1 shortens is smaller, preferably meet 0.50≤CT3/CT1≤
2.50。
(7)CT2/AC34≦1.50：Because the optics effective diameter of second lens 4 is smaller, thus CT2 shorten amplitude compared with
Greatly, the path of light is considered, the amplitude that AC34 shortens is limited by larger, therefore the amplitude that AC34 shortens is smaller, preferably
Satisfaction 0.15≤CT2/AC34≤1.50.
(8)3.00≦(CT1+AC23)/EFL：As described above, the amplitude that CT1 and AC23 shortens is smaller, and what EFL shortened
Amplitude is larger, preferably meets 3.00≤(CT1+AC23)/EFL≤10.50.
(9)BFL/AC23≦2.00：As described above, BFL shorten amplitude is larger and amplitude that AC23 shortens is smaller, preferably
Between 0.50≤BFL/AC23≤2.00.
(10)(AC12+AC45)/AC23≦5.00：Consider the path of light, when this conditional is met, have and preferably match somebody with somebody
Putting makes contraction in length, preferably meets 0.50≤(AC12+AC45)/AC23≤5.00
(11)CT3/AC34≦4.00：As described above, CT3 shorten amplitude is larger and amplitude that AC34 shortens is smaller, therefore
When this conditional is met, have and preferably configure, preferably between 0.3≤CT3/AC34≤4.00
(12)CT5/CT1≦1.5:The amplitude that CT5 as described above shortens is larger and amplitude that CT1 shortens is smaller, so bar
Part formula can receive a ceiling restriction, preferably between 0.2≤CT5/CT1≤1.5
(13)CT3/AC23≦2.00：As described above, CT3 shorten amplitude is larger and amplitude that AC23 shortens is smaller, therefore
This conditional can receive a ceiling restriction, preferably between 0.3≤CT3/AC23≤2.
(14)EFL/AC34≦1.00：As described above, EFL shorten amplitude is larger and amplitude that AC34 shortens is smaller, therefore
This conditional can receive a ceiling restriction, preferably between 0.2≤EFL/AC34≤1.00.
(15)2.30≦(CT1+AC23)/CT2：As described above, the amplitude that CT1 and AC23 shortens is smaller, and what CT2 shortened
Amplitude is larger, preferably meets 2.30≤(CT1+AC23)/CT2≤6.00.
Above-mentioned, optical imaging lens of the present invention 10 are concluded, following effects and advantage can be obtained, therefore can reach of the invention
Purpose：
First, the thing side 31 of first lens 3 has the convex surface part 311 positioned at optical axis I near zones, contributes to light
, to shorten lens length, the refractive index of the 5th lens 7 is for just, it is possible to provide the positive refractive index of system for optically focused, additionally, this is first saturating
The thing side 41 that the thing side 31 of mirror 3 has the convex surface part 311 of optical axis I near zones, second lens 4 has circumference
The convex surface part 411 of near zone, the image side surface 42 of second lens 4 have the concave part the 421, the 3rd of circumference near zone
The image side surface 62 that the image side surface 52 of lens 5 has the convex surface part 521 of optical axis I near zones, the 4th lens 6 has circle
The concave part 621 of all near zones, the thing side 71 of the 5th lens 7 have the convex surface part 711 of circumference near zone, pass through
The collocation of these face types, it can be ensured that image quality, and the material of the 5th lens 7 is plastics, it is possible to decrease cost of manufacture, and mitigate
The weight of camera lens, if the thing side 51 of the 3rd lens 5 of arranging in pairs or groups again has the concave part 511 of optical axis I near zones, can more have
Effect improves image quality.
2nd, the control that the present invention passes through relevant design parameter, such as EFL/CT1, (AC12+AC45)/AC34, EFL/
AC23、BFL/AC34、(CT1+AC23)/CT5、CT3/CT1、CT2/AC34、(CT1+AC23)/EFL、BFL/AC23、(AC12+
The parameters such as AC45)/AC23, CT3/AC34, CT5/CT1, CT3/AC23, EFL/AC34, (CT1+AC23)/CT2, make whole system
With aberration ability is preferably eliminated, for example, eliminate the ability of spherical aberration, then the thing side 31 of fit lens 3,4,5,6,7,41,51,
61st, 71 or image side surface 32,42,52,62,72 concaveconvex shape design with arrangement, make the optical imaging lens 10 improve visual field
Under conditions of angle, still possessing can effectively overcome the optical property of chromatic aberation, and provide preferably image quality.
3rd, by the explanation of foregoing six embodiments, the design of optical imaging lens 10 of the present invention is shown, these embodiments
Half angle of view can all be increased to greater than more than 81.304 degree, compared to existing optical imaging lens, using camera lens of the invention
The product of more wide-angle can be produced, makes the present invention that there is the economic benefit for according with the demands of the market.
It is an embodiment of the electronic installation 1 using the foregoing optical imaging lens 10, the electronic installation 1 refering to Figure 32
Comprising a casing 11, and an image module 12 in the casing 11.Only it is herein that the electricity is illustrated by taking supervising device as an example
Sub-device 1, but the pattern of the electronic installation 1 is not limited.
The image module 12 includes that the foregoing optical imaging lens 10, are used to supply the optical imaging lens 10
The lens barrel 21, one of setting is used for the module rear seat unit 120 set for the lens barrel 21, and one is arranged at the optical imaging lens 10
The image sensor 130 of image side.The imaging surface 9 (see Fig. 2) is formed at the image sensor 130.
The module rear seat unit 120 has a camera lens back seat 121, and one is arranged at the camera lens back seat 121 with image biography
Image sensor back seat 122 between sensor 130.Wherein, the lens barrel 21 is coaxially set along an axis II with the camera lens back seat 121
Put, and the lens barrel 21 is arranged at the inner side of camera lens back seat 121.
By installing the optical imaging lens 10, because the angle of visual field of the optical imaging lens 10 can be effectively improved, and should
The thickness of electronic installation 1 maintains slimming and then makes the product of more wide-angle, and remain able to provide good optical property with
Image quality.Therefore, the electronic installation 1 of the invention is in addition to the economic benefit for reducing casing raw material dosage, moreover it is possible to full
The product design trend of sufficient wide-angle and consumption demand.
Although specifically showing and describing the present invention with reference to preferred embodiment, those skilled in the art should be bright
In vain, do not departing from the spirit and scope of the present invention that appended claims are limited, in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (16)
1. a kind of optical imaging lens, from thing side to image side along an optical axis sequentially comprising one first lens, one second lens, one the
Three lens, one the 4th lens, and one the 5th lens, and first lens all include that one towards thing side and makes into the 5th lens
The thing side that passes through as light and one towards image side and the image side surface that passes through imaging light, wherein：
The thing side of first lens has a convex surface part for being located at optical axis near zone；
The refractive index of second lens is negative, and the thing side of second lens has a convex surface for being located at circumference near zone
Portion, and the image side surface has the concave part of circle of position week near zone；
The image side surface of 3rd lens has a convex surface part for optical axis near zone；
The image side surface of 4th lens has a concave part for being located at circumference near zone；
The refractive index of the 5th lens is for just, and material is plastics, and the thing side has a convex surface for being located at circumference near zone
Portion；
Wherein, there are the optical imaging lens lens of refractive index there was only above-mentioned five lens；
CT1 is the thickness of first lens on optical axis, AC23 be between second lens and the 3rd lens on optical axis
The air gap, CT2 is the thickness of second lens on optical axis, and EFL is the system focal length of the optical imaging lens, and AC34 is should
The air gap between 3rd lens and the 4th lens on optical axis, satisfies the following conditional expression：
2.30≤(CT1+AC23)/CT2, EFL/AC34≤1.00.
2. optical imaging lens as claimed in claim 1, it is characterised in that satisfy the following conditional expression：EFL/CT1≦2.50.
3. optical imaging lens as claimed in claim 2, it is characterised in that AC12 be first lens and second lens it
Between the air gap on optical axis, AC45 is the air gap on optical axis between the 4th lens and the 5th lens, is met
Following conditional：(AC12+AC45)/AC34≦8.50.
4. optical imaging lens as claimed in claim 3, it is characterised in that satisfy the following conditional expression：EFL/AC23≦0.7.
5. optical imaging lens as claimed in claim 3, it is characterised in that BFL is the image side surface of the 5th lens to
Distance of the imaging surface on optical axis, satisfies the following conditional expression with AC34：BFL/AC34≦3.00.
6. optical imaging lens as claimed in claim 5, it is characterised in that CT5 is thickness of the 5th lens on optical axis,
Satisfy the following conditional expression：3.00≦(CT1+AC23)/CT5.
7. optical imaging lens as claimed in claim 1, it is characterised in that CT3 is thickness of the 3rd lens on optical axis,
Satisfy the following conditional expression：CT3/CT1≦2.50.
8. optical imaging lens as claimed in claim 7, it is characterised in that satisfy the following conditional expression：CT2/AC34≦1.50.
9. optical imaging lens as described in right wants 8, it is characterised in that satisfy the following conditional expression：3.00≦(CT1+AC23)/
EFL。
10. optical imaging lens as claimed in claim 8, it is characterised in that BFL is the image side surface of the 5th lens to
Distance of the imaging surface on optical axis, satisfies the following conditional expression：BFL/AC23≦2.00.
11. optical imaging lens as claimed in claim 10, it is characterised in that the thing side of the 3rd lens also has one
Positioned at the concave part of optical axis near zone.
12. optical imaging lens as claimed in claim 1, it is characterised in that AC12 is first lens and second lens
Between the air gap on optical axis, AC45 is the air gap on optical axis between the 4th lens and the 5th lens, full
It is enough to lower conditional：(AC12+AC45)/AC23≦5.00.
13. optical imaging lens as claimed in claim 12, it is characterised in that CT3 is thickness of the 3rd lens on optical axis
Degree, satisfies the following conditional expression：CT3/AC34≦4.00.
14. optical imaging lens as claimed in claim 13, it is characterised in that CT5 is thickness of the 5th lens on optical axis
Degree, satisfies the following conditional expression：CT5/CT1≦1.50.
15. optical imaging lens as claimed in claim 1, it is characterised in that CT3 is thickness of the 3rd lens on optical axis
Degree, satisfies the following conditional expression：CT3/AC23≦2.00.
A kind of 16. portable electronic devices, comprising：
One casing；And
One image module, is mounted in the casing, and including just like any described optical imaging lens in claim 1~15
Head, one are used for lens barrel, the module rear seat unit for being set for the lens barrel set for the optical imaging lens, and one is set
In the image sensor of the optical imaging lens image side.
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| CN105425369A (en) * | 2015-08-10 | 2016-03-23 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
| CN105676424B (en) * | 2016-01-26 | 2018-08-21 | 深圳市谛源光科有限公司 | A kind of large aperture high definition wide-angle optical lens |
| TWI633361B (en) | 2017-11-15 | 2018-08-21 | 大立光電股份有限公司 | Optical imaging lens assembly, image capturing unit and electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101796449A (en) * | 2007-09-07 | 2010-08-04 | 日本电产日新株式会社 | Super wide angle lens |
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| JP2007333966A (en) * | 2006-06-14 | 2007-12-27 | Sony Corp | Imaging lens and imaging apparatus |
| JP2010197665A (en) * | 2009-02-25 | 2010-09-09 | Olympus Corp | Image pickup optical system and image pickup apparatus using the same |
| TWI443409B (en) * | 2011-06-01 | 2014-07-01 | Largan Precision Co Ltd | Image capturing optical lens assembly |
| TWI437312B (en) * | 2011-12-28 | 2014-05-11 | Largan Precision Co Ltd | Image capturing lens system |
| TWI464481B (en) * | 2012-04-18 | 2014-12-11 | Sintai Optical Shenzhen Co Ltd | Miniature lens |
| TWI470265B (en) * | 2012-04-27 | 2015-01-21 | Largan Precision Co Ltd | Optical image capturing system |
| TWI456251B (en) * | 2012-06-26 | 2014-10-11 | Largan Precision Co Ltd | Single focus optical image capturing system |
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| CN101796449A (en) * | 2007-09-07 | 2010-08-04 | 日本电产日新株式会社 | Super wide angle lens |
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