CN105467563B - The small-sized narrow visual field optical imaging lens of portable equipment - Google Patents
The small-sized narrow visual field optical imaging lens of portable equipment Download PDFInfo
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- CN105467563B CN105467563B CN201410460496.0A CN201410460496A CN105467563B CN 105467563 B CN105467563 B CN 105467563B CN 201410460496 A CN201410460496 A CN 201410460496A CN 105467563 B CN105467563 B CN 105467563B
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Abstract
The present invention is related to a kind of optical imaging lens, more particularly to the small-sized narrow visual field optical imaging lens of portable equipment, including one to by incident ray by along a primary optic axis advance be changed to along one perpendicular to the primary optic axis the second optical axis advance a reflecting element, one aperture, one the first lens with even aspheric surface (even-aspheric) object side and even aspheric surface image side surface, one the first lens with even aspheric surface object side and even aspheric surface image side surface, one the second lens with even aspheric surface object side and even aspheric surface image side surface, one the third lens with even aspheric surface object side and even aspheric surface image side surface, one the 4th lens with even aspheric surface object side and even aspheric surface image side surface, and one with even aspheric surface object side and even aspheric surface image side surface the 5th Lens, the aperture, this first, second, third, fourth and the 5th lens can be along the second optical axis and be arranged.
Description
Technical field
The present invention is related to a kind of optical imaging lens, and especially with can be used among portable electronic devices
It is related with the compact optical imaging lens compared with narrow visual field.
Background technique
In recent years, e.g. slim light and handyization of the portable equipments such as mobile phone and hand-held digital assistant device (PDA) is so that take the photograph
The miniature requirement of shadow module is higher and higher.Compared with narrow visual field optical imaging lens for applying in portable equipment, usually
Volume is too big and higher cost.
Summary of the invention
Optical imaging lens provided by some embodiments of the invention have sequential five lens, these optics at
As camera lens includes by object side to imaging plane: one to vertical along one by being changed to along primary optic axis traveling by incident ray
There is even aspheric surface (even-aspheric) object in a reflecting element of the second optical axis traveling of the primary optic axis, an aperture, one
First lens of side and even aspheric surface image side surface, one with even aspheric surface object side and even aspheric surface image side surface the
The second lens with even aspheric surface object side and even aspheric surface image side surface of one lens, one, one have even aspheric surface object
The third lens of side and even aspheric surface image side surface, one with even aspheric surface object side and even aspheric surface image side surface the
Four lens and the 5th lens with even aspheric surface object side and even aspheric surface image side surface, the aperture, this first,
Second, third, the 4th and the 5th lens can be along the second optical axis and be arranged.
Among other some embodiments, the optical imaging lens of relatively large field angle include: one contains one first
Lens and the second lens and along primary optic axis setting preceding camera lens group, one have flat surfaces to be reflected through preceding camera lens
The reflecting element of the light of group, one include the rear lens group of the third lens, one the 4th lens and second optical axis of alignment
The 5th lens；Light after the reflection is to advance along the second optical axis, and the first, second optical axis intersects in a crosspoint
And shape has angle；Among wherein one embodiment, which is between 75 degree to 90 degree；A preferred embodiment it
In, which is 90 degree, and field angle (field of view) is between 30 degree to 40 degree.
Among some embodiments, the first lens have positive refractive index and are biconvex lens, and the second lens have negative dioptric
Rate and be biconcave lens, the third lens have negative refractive index, the 4th lens have positive refractive index, and the 5th lens have positive dioptric
Rate, first to the 5th lens all have object side and the image side surface of even aspheric surface of even aspheric surface.
Detailed description of the invention
Fig. 1 shows the schematic diagram of the section structure of the optical imaging lens 100 of first embodiment according to the present invention.
Fig. 2 shows the schematic diagram of the section structure of the optical imaging lens 200 of second embodiment according to the present invention.
Fig. 3 shows the schematic diagram of the section structure of the optical imaging lens 300 of 3rd embodiment according to the present invention.
Fig. 4 shows the schematic diagram of the section structure of the optical imaging lens 400 of fourth embodiment according to the present invention.
Fig. 5 shows the schematic diagram of the section structure of the optical imaging lens 500 of the 5th embodiment according to the present invention.
Fig. 6 shows the schematic diagram of the section structure of the optical imaging lens 600 of sixth embodiment according to the present invention.
Fig. 7 shows the schematic diagram of the section structure of the optical imaging lens 700 of the 7th embodiment according to the present invention.
Fig. 8 shows the schematic diagram of the section structure of the optical imaging lens 800 of the 8th embodiment according to the present invention.
Fig. 9 shows the schematic diagram of the section structure of the optical imaging lens 900 of the 9th embodiment according to the present invention.
Specific embodiment
This specification says its " lens have positive refractive index (or negative refractive index) ", refers to that the lens are located at optical axis
Near zone has for positive refractive index (or negative refractive index)；" the object side (or image side surface) of a lens includes being located at certain region
Convex surface part (or concave part) ", refer to the region compared to radially close to the lateral area in the region, towards being parallel to optical axis
For direction more " outwardly convex " (or " being recessed inwardly ")；The surface of lens is indicated with Si, when indicate first lens it
When object side and image side surface, " i " is 1 and 2, and when the object side and image side surface for indicating the second lens, " i " is 3 and 4, according to this class
It pushes away；Likewise, the radius of curvature of a certain lens relevant surfaces is then indicated with Ri.R1 and R2 respectively indicate the first lens object side and
The radius of curvature of image side surface, R3 and R4 respectively indicate the radius of curvature of the second lens object side and image side surface, and so on." as
It is high " refer to the half of distance between receiving light zone corner on imaging plane, that is, rectangular imaging region vertex be located at center
The optical axis of point, distance between the two
First embodiment
Fig. 1 shows the schematic diagram of the section structure of the optical imaging lens 100 of first embodiment according to the present invention, optics at
As camera lens 100 sequentially includes a camera lens group F10 and rear lens group R10 before an aperture AS, one, this light by object side to image side
Learning imaging lens 100 also includes an infrared filter (IR cut filter), set on preceding camera lens group F10 and imaging surface
Between one image sensor.
Preceding camera lens group F10 include object side S1 be convex surface and the one first lens L11 that image side surface S2 is convex surface, with
And it is concave surface in object side S3 and is concave surface and the one second lens L12 with negative refractive index in image side surface S4；Rear lens group
R10 include object side S5 be concave surface and the third lens L13 that image side surface S6 is convex surface, object side S7 be concave surface and
Image side surface S8 optical axis near zone is one the 4th lens L14 of concave surface and is concave surface and in image side surface S10 light in object side S9
Axis near zone is one the 5th lens L15 of concave surface.Preceding camera lens group F10 has positive refractive index, and rear lens group R10 has
Negative refractive index, this optical imaging lens have between preceding camera lens group F10 and rear lens group R10 between maximum air
Gap.
First to the 5th lens can be as made by different materials, among some embodiments, these lens are by lens
Made by plastic material.
T1 is the thickness of the first lens L11, and T2 is the thickness of the second lens L12, and T3 is the thickness of the third lens L13, T4
It is the thickness of the 4th lens L14, T5 is the thickness of the 5th lens L15, and TF is the thickness of infrared filter, these thickness T1~
T5 and TF is all along measured by optical axis.
It is the second lens and that AG12, which is the air gap between the first lens and the second lens, AG23 (as MaxAG),
The air gap, AG34 between three lens be the air gap between the third lens and the 4th lens, AG45 be the 4th lens with
The air gap between 5th lens；AG5F is the air gap of the 5th lens and infrared filter, and AGFS is infrared ray filter
The air gap of mating plate and imaging surface, AG12, AG23, AG34, AG45, AG5F and AGFS are also along measured by optical axis.
Lens L11, L12 of the optical imaging lens 100 of the display of table 1 first embodiment according to the present invention, L13, L14,
The detailed optical data of L15.Each surface is indicated by the number of lens with the combination of o (object side) or i (image side).In table 1
Thickness/air gap value one arranges, if corresponding to the object side of lens, the value representative thickness, if correspond to lens to side,
Then the value represents the air gap.
Table 1
According to this first embodiment, aperture is located at the object side of the first lens, as shown in Figure 1；And its radius is about
1.542mm.The Abbe number of first lens is greater than 40, and in this embodiment, the Abbe number of the first lens is 55.63.On optical axis
Between the distance between the vertex of object side S1 and aperture, a1 is about 0.48mm.In certain embodiments, on optical axis between
The air gap AG12 between first lens L11 image side surface S2 and the second lens L12 object side S3 is 0.05mm.It is situated between on optical axis
The air gap AG23 between the second lens L12 image side surface S4 and the third lens L13 object side S5 is 3.809mm.Image height is big
It is approximately 2.997mm.It is 8.635 that effective focal length (effective focal length, EFL), which is alternatively referred to as focal length,.One optics at
As the focal length of camera lens is defined as the distance that parallel rays is gathered in a focus.The relative luminance of this optical lens
(relative illumination, RI), that is, the ratio of circumferential area and optical axis regional luminance are 90.0%.Chief ray angle
Spending (chief ray angle, CRA) is 17.5 degree.
In this embodiment, overall path length (total track length, TTL) is from the first lens L11 object side
Face S1 measures the distance between imaging plane on along optical axis, is about 8.005mm.And the ratio of TTL/EFL is equal to or
Less than 1.0, and preferably between 0.7-0.99.In this embodiment, the value of TTL/EFL is 0.926.TTL/ iris radius
Ratio be equal to or less than 8.0, and preferably between 2.0-8.0.In this embodiment, this ratio is 5.188.
This noun " maximum the air gap " MaxAG is the maximum air gap width between representing adjacent lens.Implement herein
In example, maximum the air gap is the gap between the second lens L12 and the third lens L13, that is, AG23.ALT/ is maximum empty
The ratio in gas gap (MaxAG) be between 0.3 to 0.7, and preferably between 0.4-0.6.This noun " ALT " is
One lens to the 4th lens are along the integral thickness summation on optical axis direction.F10 institute of camera lens group before noun " ALT1 " refers to
There is a thickness summation of lens, and noun " ALT2 " refers to the thickness summation of all lens of rear lens group R10, ALT, ALT1,
ALT2 and MaxAG can be satisfied the following conditional expression:
0.35<ALT2/MaxAG<ALT1/MaxAG<ALT/MaxAG<0.7
Following equation description can be used in the even aspheric surface of one lens:
Wherein Z indicates aspherical depth, and c indicates the radius of curvature of lens surface, and r is indicated from optical axis to lens surface
Distance (height), unit are mm, and K is conical surface coefficient (Conic Constant), and a (i) is the i-th rank asphericity coefficient.
Among first embodiment, preceding camera lens group F10 has two lens, and the lens of proximity object side are that have positive dioptric
The lens of rate, and another lens are a biconcave lens, rear lens group R10 then includes the three pieces lens being fixed to one another, and each
A lens can respectively be moved along the relatively independent ground optical axis I1, such as arrow B1, B2, shown in B3.
The conical surface system of the aspherical surface data of each eyeglass of the first embodiment optical imaging lens of the display of table 2 according to the present invention
Number K and asphericity coefficient.
Table 2
The asphericity coefficient of other more Gao Xiangci is then 0.
Second embodiment
Optical imaging lens 100 in first embodiment are modified as to include a reflection subassembly with flat reflective surface
To be reflected through the light of preceding camera lens group F10.Fig. 2 shows the optical imaging lens 200 of second embodiment according to the present invention
The schematic diagram of the section structure.This optical imaging lens 200 sequentially includes one along primary optic axis I1 arrangement from object side to image side
Preceding camera lens group F20, one with flat reflective surface to change reflection subassembly 250 and an edge in the direction of an incident light
One second optical axis I2 arrangement rear lens group R20.In this second embodiment, the second optical axis I2 and primary optic axis I1 be with
An angle of 90 degrees intersection.
Preceding camera lens group F20 include object side S1 be convex surface and the one first lens L21 that image side surface S2 is convex surface, with
And it is concave surface in object side S3 and is concave surface and the one second lens L22 with negative refractive index in image side surface S4；Rear lens group
R20 include object side S5 be concave surface and the third lens L23 that image side surface S6 is convex surface, object side S7 be concave surface and
Image side surface S8 optical axis near zone is one the 4th lens L24 of concave surface and is concave surface and in image side surface S10 light in object side S9
Axis near zone is one the 5th lens L25 of concave surface.The object side of first to the 5th lens and image side surface are all even aspheric surfaces,
The aperture that this optical imaging lens 200 is also located at the first lens L21 object side comprising one.Reflection subassembly 250 can be a flat surface mirror
Or prism.
First to the 5th lens can be as made by different materials, among some embodiments, these lens are by lens
Made by plastic material.
The detailed optical data of the lens of the optical imaging lens 200 of the second embodiment of the display of table 3 according to the present invention:
Table 3
In this embodiment, from the object side S1 of the first lens L21 to the center of reflection subassembly 250 along primary optic axis
The distance d1 that I1 is measured is 2.95mm.The distance d2 that the center of self-reflection component 250 to imaging plane is measured is
5.055mm.The overall path length (TTL) for being then equivalent to d1 and d2 summation is 2.95mm plus 5.055mm, that is,
8.005mm.In this embodiment, it is 5.188 that the value of TTL/EFL, which is the ratio of 0.926, TTL/ iris radius,.
Be less than 1.0mm in the air gap width of two lens near imaging surface, preferably between 0.1~
Between 1.0mm, the present embodiment is the 4th lens and the 5th lens near two lens of imaging surface, and the air gap therebetween is about
For 0.77mm.
The conical surface system of the aspherical surface data of each eyeglass of the second embodiment optical imaging lens of the display of table 4 according to the present invention
Number K and asphericity coefficient.
Table 4
The asphericity coefficient of other more Gao Xiangci is then 0.
The angle of half field-of view of this optical imaging lens be between 10~40 degree, preferably between 20~25 degree it
Between, preferably near 22 degree, f-number (F-number) is 2.8.
3rd embodiment
Fig. 3 shows the schematic diagram of the section structure of the optical imaging lens 300 of 3rd embodiment according to the present invention.It is real herein
It applies in example, the arrangement of reflection subassembly 350 is so that the second optical axis I2 with primary optic axis I1 is intersected in a manner of being not an angle of 90 degrees.Its
Angle preferably meets following condition:
Jiao≤90 degree 75 Dus≤Jia
If angle, less than 75 degree, imaging plane must tilt a very big angle.It so can be to optical imagery
There is undesirable influence on the optical characteristics of camera lens 300 and surface.If must then increase camera lens 300 if angle is greater than 90 degree
Lateral depth.
These lens can be same or like with the lens described in second embodiment.And optical imaging lens 300
Detailed optical data can also be same or like with the optical imaging lens 200 described in second embodiment.Five lens
L31, L32, L33, L34 and L35 can be to be made of transparent plastics or other optical materials.
Fourth embodiment
Fig. 4 shows the schematic diagram of the section structure of the optical imaging lens of fourth embodiment according to the present invention, this optics
Imaging lens 100 sequentially include that an aperture AS, one first lens L41, one second lens L42, a third are saturating by object side to image side
Mirror L43, one the 4th lens L44 and one the 5th lens L45, each eyeglass is both relative to optical axis and axisymmetricly.
First lens L41 has positive refractive index, and object side has the convex surface part positioned at optical axis near zone, the second lens
L42 has negative refractive index, and image side surface has the concave part positioned at optical axis near zone, and the third lens L43 has negative refractive index,
Its object side has the convex surface part positioned at optical axis near zone, and image side surface also has the convex surface part positioned at optical axis near zone, the
Four lens L44 have negative refractive index, and object side has the concave part positioned at optical axis near zone, and image side surface also has positioned at light
The concave part of axis near zone, the 5th lens L45 have positive refractive index, and object side has one to be located at the recessed of optical axis near zone
Face, image side surface have a convex surface part for being located at optical axis near zone and one positioned at another convex surface of circumference near zone
Portion.
This optical imaging lens also includes an infrared filter, to stop wavelength to be greater than the light of 700nm, though
The right infrared filter is the single component between the 5th lens and imaging surface, but in fact, the infrared ray filters
Piece can also be located at any other position, and can be made of plurality of element.
As shown in figure 4, S1, R1 and S2, R2 be respectively indicate the first lens object side and its curvature and image side surface and
Its curvature；S3, R3 and S4, R4 are object side and its curvature and image side surface and its curvature for respectively indicating the second lens；S5,
R5 and S6, R6 are object side and its curvature and image side surface and its curvature for respectively indicating the third lens；Similarly, S7, R7 and
S8, R8 are object side and its curvature and image side surface and its curvature for respectively indicating the 4th lens；S9, R9 and S10, R10 are point
Not Biao Shi the 5th lens object side and its curvature and image side surface and its curvature；And S11 and S12 then respectively indicate infrared ray
The object side of optical filter and image side surface.
It is the thickness of the first lens L41 according to Fig. 4, T1, T2 is the thickness of the second lens L42, and T3 is the third lens L43
Thickness, T4 are the thickness of the 4th lens L44, and T5 is the thickness of the 5th lens L45, these thickness T1~T5 is along optical axis institute
Measurement；It is between the second lens and the third lens that AG12, which is the air gap between the first lens and the second lens, AG23,
It is between the 4th lens and the 5th lens that the air gap, AG34, which are the air gap between the third lens and the 4th lens, AG45,
The air gap；All the air gap AG12, AG23, AG34 and AG45 are also along measured by optical axis；BFL(back
Focal length) be optical imaging lens back focal length, be between the 5th lens image side surface and imaging surface along optical axis away from
From if infrared filter is between the 5th lens and imaging surface, BFL also contains the thickness of infrared filter
Degree, EFL indicate the effective focal length (effective focal length) of this optical imaging lens.
In following paragraph, ALT indicates the thickness summation of the first to the 5th lens, i.e. ALT=T1+T2+T3+T4+T5, and
AAG is then between the first to the 5th lens of tabular form, thickness summation of all the air gaps along optical axis, i.e. AAG=AG12+AG23+
AG34+AG45。
Section Example according to the present invention can be by reducing this etc. in order to reduce the entire length of optical imaging lens
The air gap between the thickness and eyeglass of eyeglass is reached, however, to maintain appropriate while reducing lens thickness
Quality of optical imaging, be it is extremely difficult, therefore, the first lens are configured to have positive refractive index, and the second lens are designed to
With negative refractive index, the third lens are configured to have positive refractive index, and the 4th lens are configured to have negative refractive index, and the 5th thoroughly
Mirror is configured to have positive refractive index, and in order to improve production capacity while reduce manufacturing cost, this five lens can be designed
At identical material.
The detailed optical data of the lens of the optical imaging lens 400 of the fourth embodiment of the display of table 5 according to the present invention, are removed
Other each lens except second lens are designed to using identical plastic material, so as to simplify fabrication schedule and
Reduce manufacturing cost.
Table 5
According to this fourth embodiment, aperture is located at the object side of the first lens, as shown in figure 4, and its radius be about
2.5mm.The Abbe number of first lens is greater than 40, and in this embodiment, the Abbe number of the first lens is 55.63.It is situated between on optical axis
In the distance between the vertex of object side S1 and aperture, a1 is about 0.251mm.In certain embodiments, between on optical axis
The air gap AG12 between one lens L41 image side surface S2 and the second lens L42 object side S3 is 0.07mm.On optical axis between
The air gap AG23 between second lens L42 image side surface S4 and the third lens L43 object side S5 is 0.501mm.This implementation
The field angle of example is slightly larger and is 22 degree, and image height is about 2.379mm.Effective focal length (effective focal length, EFL)
Alternatively referred to as focal length, the present embodiment 5.884mm.The focal length of one optical imaging lens is defined as parallel rays and is gathered in a coke
Distance on point.
In this embodiment, overall path length (total track length, TTL) is from the first lens L11 object side
Face S1 measures the distance between imaging plane on along optical axis, is about 5.81mm.And the ratio of TTL/EFL is equal to or small
In 1.0, and preferably between 0.7-0.99.In this embodiment, the value of TTL/EFL is 0.988.TTL/ iris radius
Ratio is equal to or less than 8.0, and preferably between 2.0-8.0.In this embodiment, this ratio is 5.533.
The conical surface system of the aspherical surface data of each eyeglass of the fourth embodiment optical imaging lens of the display of table 6 according to the present invention
Number K and asphericity coefficient.
Table 6
The asphericity coefficient of other more Gao Xiangci is then 0.
The angle of half field-of view of this optical imaging lens 400 is between 15~3 degree, preferably near 22 degree.
5th embodiment
Fig. 5 shows the schematic diagram of the section structure of the optical imaging lens 500 of the 5th embodiment according to the present invention.In this reality
It applies in example, a reflection subassembly 550 is on the primary optic axis I1 of incident ray, this structure can reduce the lateral deep of camera lens
Degree, to make whole design reach the purpose of slimming, reflection subassembly 250 can be a flat surface mirror or prism, to will be incident
Light is by being along the other direction traveling perpendicular to optical axis along light emission travel guidance.
First lens L51 has positive refractive index, and object side has the convex surface part positioned at optical axis near zone, the second lens
L52 has negative refractive index, and image side surface has the concave part positioned at optical axis near zone, and the third lens L53 has negative refractive index,
Its object side has the convex surface part positioned at optical axis near zone, and image side surface also has the convex surface part positioned at optical axis near zone, the
Four lens L54 have negative refractive index, and object side has the concave part positioned at optical axis near zone, and image side surface also has positioned at light
The concave part of axis near zone, the 5th lens L55 have positive refractive index, and object side has one to be located at the recessed of optical axis near zone
Face, image side surface have a convex surface part for being located at optical axis near zone and one positioned at another convex surface of circumference near zone
Portion.
These lens can be same or like with the lens described in fourth embodiment.Between the first lens on optical axis
The air gap AG12 between L51 image side surface S2 and the second lens L52 object side S3 is 0.07mm.Second lens L52 is along optical axis
With a thickness of 0.28mm, the third lens along optical axis with a thickness of 0.769mm, infrared filter with a thickness of 0.21mm, it with
The distance of 5th lens L55 is 0.5mm, it is 0.3mm at a distance from imaging surface.
Among this embodiment, the diameter of aperture AS is 2.1mm, and the diameter of reflection subassembly 550 is 3.0mm, this optics
The half angle of view of imaging lens between 15~30 degree, and with 22 degree or so preferably, f-numbers 2.8, the ratio of TTL and ALT
Abbe number (abbe number) less than 1.0, first, third, the four, the 5th lens is both greater than 40.
Sixth embodiment
Fig. 6 shows the schematic diagram of the section structure of the optical imaging lens 600 of sixth embodiment according to the present invention.
First lens L61 has positive refractive index, and object side has a convex surface part for being located at optical axis near zone, Yi Jiyi
Positioned at the convex surface part of circumference near zone, image side surface has a convex surface part for being located at optical axis near zone and one positioned at circle
The convex surface part of all near zones.Second lens L62 has negative refractive index, and object side has one to be located at the recessed of optical axis near zone
Face and one be located at circumference near zone convex surface part, image side surface have one be located at optical axis near zone concave part, with
And one be located at circumference near zone concave part.The third lens L63 has negative refractive index, and object side is attached positioned at optical axis with one
The convex surface part of near field and one be located at circumference near zone convex surface part, image side surface have one be located at optical axis near zone
Concave part and one be located at circumference near zone concave part.4th lens L64 has negative refractive index, and object side has
One is located at the concave part of circumference near zone positioned at the concave part of optical axis near zone and one, and image side surface has one to be located at
The concave part of optical axis near zone and one be located at circumference near zone convex surface part.5th lens L65 has positive refractive index,
Its object side has a concave part for being located at circumference near zone positioned at the convex surface part of optical axis near zone and one, image side
Face has a convex surface part for being located at circumference near zone positioned at the concave part of optical axis near zone and one.
The detailed optical data of the lens of the optical imaging lens 600 of the sixth embodiment of the display of table 7 according to the present invention.
Table 7
The conical surface system of the aspherical surface data of each eyeglass of the sixth embodiment optical imaging lens of the display of table 8 according to the present invention
Number K and asphericity coefficient.
Table 8
The image height of this optical imaging lens is 2.28mm, EFL 6.574mm, TTL 5.731mm, and f-number is
2.77, relative luminance 66.3%, chief ray angle is 22.3 degree, and field angle is 38.8 degree, and EFL is greater than with image height ratio value
1.0, and it is greater than 2.0 preferably.
7th embodiment
Fig. 7 shows the schematic diagram of the section structure of the optical imaging lens 700 of the 7th embodiment according to the present invention.
First lens L71 has positive refractive index, and object side has a convex surface part for being located at optical axis near zone, Yi Jiyi
Positioned at the convex surface part of circumference near zone, image side surface has a convex surface part for being located at optical axis near zone and one positioned at circle
The convex surface part of all near zones.Second lens L72 has negative refractive index, and object side has one to be located at the recessed of optical axis near zone
Face and one be located at circumference near zone convex surface part, image side surface have one be located at optical axis near zone concave part, with
And one be located at circumference near zone concave part.The third lens L73 has negative refractive index, and object side is attached positioned at optical axis with one
The convex surface part of near field and one be located at circumference near zone convex surface part, image side surface have one be located at optical axis near zone
Concave part and one be located at circumference near zone concave part.4th lens L74 has negative refractive index, and object side has
One is located at the concave part of circumference near zone positioned at the concave part of optical axis near zone and one, and image side surface has one to be located at
The concave part of optical axis near zone and one be located at circumference near zone convex surface part.5th lens L75 has positive refractive index,
Its object side has a concave part for being located at circumference near zone positioned at the convex surface part of optical axis near zone and one, image side
Face has a convex surface part for being located at circumference near zone positioned at the convex surface part of optical axis near zone and one.
The detailed optical data of the lens of the optical imaging lens 700 of the 7th embodiment of the display of table 9 according to the present invention.
Table 9
The conical surface of the aspherical surface data of each eyeglass of the 7th embodiment optical imaging lens of the display of table 10 according to the present invention
COEFFICIENT K and asphericity coefficient.
Table 10
The image height of this optical imaging lens be 2.28mm, EFL 5.910mm, TTL 5.283mm, f-number 2.8,
Relative luminance is 60.0%, and chief ray angle is 24.2 degree, and field angle is 41.4 degree.
8th embodiment
Fig. 8 shows the schematic diagram of the section structure of the optical imaging lens 800 of the 8th embodiment according to the present invention.
First lens L81 has positive refractive index, and object side has a convex surface part for being located at optical axis near zone, Yi Jiyi
Positioned at the convex surface part of circumference near zone, image side surface has a convex surface part for being located at optical axis near zone and one positioned at circle
The convex surface part of all near zones.Second lens L82 has negative refractive index, and object side has one to be located at the recessed of optical axis near zone
Face and one be located at circumference near zone convex surface part, image side surface have one be located at optical axis near zone concave part, with
And one be located at circumference near zone concave part.The third lens L83 has negative refractive index, and object side is attached positioned at optical axis with one
The concave part of near field and one be located at circumference near zone convex surface part, image side surface have one be located at optical axis near zone
Convex surface part and one be located at circumference near zone concave part.4th lens L84 has negative refractive index, and object side has
One is located at the concave part of circumference near zone positioned at the concave part of optical axis near zone and one, and image side surface has one to be located at
The concave part of optical axis near zone and one be located at circumference near zone convex surface part.5th lens L85 has positive refractive index,
Its object side has a convex surface part for being located at circumference near zone positioned at the convex surface part of optical axis near zone and one, image side
Face has a convex surface part for being located at circumference near zone positioned at the concave part of optical axis near zone and one.
The detailed optical data of the lens of the optical imaging lens 800 of the 8th embodiment of the display of table 11 according to the present invention.
Table 11
The conical surface of the aspherical surface data of each eyeglass of the 8th embodiment optical imaging lens of the display of table 12 according to the present invention
COEFFICIENT K and asphericity coefficient.
Table 12
The image height of this optical imaging lens be 2.28mm, EFL 5.910mm, TTL 5.293mm, f-number 2.8,
Relative luminance is 69.3%, and chief ray angle is 21.2 degree, and field angle is 41.4 degree.
9th embodiment
Fig. 9 shows the schematic diagram of the section structure of the optical imaging lens 900 of the 9th embodiment according to the present invention.
First lens L91 has positive refractive index, and object side has a convex surface part for being located at optical axis near zone, Yi Jiyi
Positioned at the convex surface part of circumference near zone, image side surface has a convex surface part for being located at optical axis near zone and one positioned at circle
The convex surface part of all near zones.Second lens L92 has negative refractive index, and object side has one to be located at the convex of optical axis near zone
Face and one be located at circumference near zone convex surface part, image side surface have one be located at optical axis near zone concave part, with
And one be located at circumference near zone concave part.The third lens L93 has negative refractive index, and object side is attached positioned at optical axis with one
The concave part of near field and one be located at circumference near zone concave part, image side surface have one be located at optical axis near zone
Concave part and one be located at circumference near zone concave part.4th lens L94 has positive refractive index, and object side has
One is located at the convex surface part of optical axis near zone, the convex surface part for being located at optical axis near zone with one, and image side surface has one to be located at
The concave part of optical axis near zone, the concave part for being located at optical axis near zone with one.
The detailed optical data of the lens of the optical imaging lens 900 of the 9th embodiment of the display of table 13 according to the present invention.
Table 13
The conical surface of the aspherical surface data of each eyeglass of the 9th embodiment optical imaging lens of the display of table 14 according to the present invention
COEFFICIENT K and asphericity coefficient.
Table 14
The image height of this optical imaging lens is 2.28mm, EFL 13.998mm, TTL 12.806mm, and f-number is
2.8, relative luminance 86.7%, chief ray angle is 25.5 degree, and field angle is 22.6 degree.
Although specifically showing and describing the present invention in conjunction with preferred embodiment, those skilled in the art should be bright
It is white, it is not departing from the spirit and scope of the present invention defined by the appended claims, it 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 (6)
1. a kind of small-sized narrow visual field optical imaging lens of portable equipment, it is characterised in that: sequentially wrapped from object side to imaging plane
Contain:
One aperture；
Camera lens group includes that two lens are arranged along a primary optic axis before one, which has positive refractive index；
One first reflection subassembly by advancing along a primary optic axis being changed to incident ray along one perpendicular to first light
Second optical axis of axis is advanced；And
One rear lens group includes that three lens are arranged along second optical axis；Wherein
The rear lens group has negative refractive index, and from first reflection subassembly to the imaging plane, sequentially number comes second in the wrong
The object side of the lens of light rate is concave surface；
The lens thickness summation of the preceding camera lens group is greater than the lens thickness summation of rear lens group；
Also meet the conditional of TTL/EFL≤1.0, wherein TTL is overall path length, and EFL is the one of the optical imaging lens
Effective focal length.
2. a kind of small-sized narrow visual field optical imaging lens of portable equipment according to claim 1, it is characterised in that: wherein
The reflecting surface and the primary optic axis of first reflection subassembly are the relationships in 45 degree of angles.
3. a kind of small-sized narrow visual field optical imaging lens of portable equipment according to claim 1, it is characterised in that: wherein
The thickness summation of preceding all lens of camera lens group is ALT1, and the thickness summation of all lens of rear lens group is ALT2, phase
Maximum air gap value MaxAG between adjacent two lens, the thickness summation of all lens are ALT, and ALT, ALT1, ALT2 and
MaxAG can be satisfied the following conditional expression:
0.35<ALT2/MaxAG<ALT1/MaxAG<ALT/MaxAG<0.7。
4. a kind of small-sized narrow visual field optical imaging lens of portable equipment according to claim 1, it is characterised in that: wherein
An angle between the primary optic axis and second optical axis is between 75 degree to 90 degree ranges.
5. a kind of small-sized narrow visual field optical imaging lens of portable equipment according to claim 1, it is characterised in that: its
In, the Abbe number (abbe number) of first lens of the preceding camera lens group is greater than 40.
6. a kind of small-sized narrow visual field optical imaging lens of portable equipment according to claim 1, it is characterised in that: wherein
The radius of the aperture and the ratio of image height are greater than or equal to 0.5.
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| CN201410460496.0A CN105467563B (en) | 2014-09-11 | 2014-09-11 | The small-sized narrow visual field optical imaging lens of portable equipment |
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| CN201410460496.0A CN105467563B (en) | 2014-09-11 | 2014-09-11 | The small-sized narrow visual field optical imaging lens of portable equipment |
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| CN105467563B true CN105467563B (en) | 2019-02-22 |
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| EP3779565A3 (en) | 2013-07-04 | 2021-05-05 | Corephotonics Ltd. | Miniature telephoto lens assembly |
| US9392188B2 (en) | 2014-08-10 | 2016-07-12 | Corephotonics Ltd. | Zoom dual-aperture camera with folded lens |
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| TWI604212B (en) | 2016-01-13 | 2017-11-01 | 大立光電股份有限公司 | Imaging optical lens assembly, image capturing unit and electronic device |
| CN106526787A (en) * | 2016-08-25 | 2017-03-22 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
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| TWI594037B (en) | 2016-11-24 | 2017-08-01 | 大立光電股份有限公司 | Photographing lens assembly, image capturing unit and electronic device |
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| KR102456870B1 (en) * | 2017-07-23 | 2022-10-19 | 코어포토닉스 리미티드 | Compact folded lenses with large apertures |
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