CN106597637B - Eyeglass mould group - Google Patents
Eyeglass mould group Download PDFInfo
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- CN106597637B CN106597637B CN201610945470.4A CN201610945470A CN106597637B CN 106597637 B CN106597637 B CN 106597637B CN 201610945470 A CN201610945470 A CN 201610945470A CN 106597637 B CN106597637 B CN 106597637B
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- eyeglass
- mould group
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- 230000003287 optical effect Effects 0.000 claims abstract description 55
- 238000005452 bending Methods 0.000 claims description 11
- 230000004075 alteration Effects 0.000 description 23
- 201000009310 astigmatism Diseases 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/0005—Optical objectives specially designed for the purposes specified below having F-Theta characteristic
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/003—Alignment of optical elements
- G02B7/005—Motorised alignment
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S501/00—Compositions: ceramic
- Y10S501/90—Optical glass, e.g. silent on refractive index and/or ABBE number
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eyeglasses (AREA)
- Lenses (AREA)
Abstract
The present invention relates to a kind of eyeglass mould group, the eyeglass mould group of one embodiment of the present of invention includes the first eyeglass from object side direction arranged in sequence to the upper side, the second eyeglass, third eyeglass, the 4th eyeglass, the 5th eyeglass and the 6th eyeglass；First eyeglass has negative index, the upper side of side of the object and spill including convex；Second eyeglass has positive refracting power, the upper side of side of the object and convex including convex；The third eyeglass and the 4th eyeglass have refractive index；5th eyeglass has refractive index, and the upper side of side of the object and convex including spill, in the cross-section observation containing optical axis, the side of the object of the 5th eyeglass has more than two points of inflexion；6th eyeglass has negative index, the upper side of side of the object and convex including spill.
Description
Technical field
The present invention relates to a kind of eyeglass mould groups, more specifically, be related to it is a kind of have be made of six eyeglasses and can be with
Obtain the eyeglass mould group of the micro-optics system of high-resolution and high field angle.
Background technique
In general, the camera of portable terminating machine has eyeglass mould group and photographing element.
Wherein, eyeglass mould group includes multiple eyeglasses, constitutes the image for the subject for making multiple eyeglasses through photographing element
Optical system.The elements such as CCD are used as photographing element, generally there is 1.4 μm or more of pixel.
But as the size of portable terminating machine and the size of camera become smaller, the pixel size of photographing element is contracted to
μm 1.121.4 hereinafter, it is therefore desirable to develop it is a kind of can also obtain under the described conditions high-resolution F number be 2.3 or with
Under eyeglass mould group.
[existing technical literature]
[patent document]
(patent document 1) KR10-1504033B1
(patent document 2) KR10-1504062B1
(patent document 3) KR10-1452150B1
(patent document 4) US8743483B2.
Summary of the invention
Technical problem
It is an object of the present invention to for solve described problem provide it is a kind of miniature with high-resolution and wide visual field angle
Eyeglass mould group.
Technical solution
According to one embodiment of present invention, eyeglass mould group includes from the first eyeglass of the upward arranged in sequence in object side,
Two eyeglasses, third eyeglass, the 4th eyeglass, the 5th eyeglass and the 6th eyeglass；First eyeglass has negative index, including convex
The side of the object of shape and the upper side of spill；Second eyeglass has positive refracting power, side of the object and convex including convex
Upper side；The third eyeglass and the 4th eyeglass have refractive index；5th eyeglass has refractive index, including spill
The upper side of side of the object and convex, in the cross-section observation containing optical axis, there are two the side of the object tools of the 5th eyeglass
Above point of inflexion；6th eyeglass has negative index, the upper side of side of the object and convex including spill, and described
Eyeglass mould group can meet following [formula 1].
[formula 1] -35 < f1/ f < -16,
Wherein, f is the focal length of entire eyeglass mould group, f1It is the focal length of first eyeglass.
The side of the object of 5th eyeglass may include the point of inflexion, and the point of inflexion, which is formed in from optical axis, is separated by pre-determined distance
Position on.
The eyeglass mould group can meet following [formula 2].
[formula 2] | f5/ f | > 80,
Wherein, f is the focal length of entire eyeglass mould group, f5It is the focal length of the 5th eyeglass.
The side of the object of the spill of 6th eyeglass may include the first bending section being formed on optical axis and be formed in from
Optical axis is separated by the second bending section on the position of pre-determined distance.
The upper side of the convex of 6th eyeglass may include the recessed portion being formed on optical axis.
4th eyeglass can have positive refracting power, and the upper side of the side of the object including spill and convex.
The eyeglass mould group can meet following [formula 3].
[formula 3] V1-V3> 25,
Wherein, V1It is the Abbe number of the first eyeglass, V3It is the Abbe number of third eyeglass.
The eyeglass mould group can meet following [formula 4].
[formula 4] V6-V5> 34,
Wherein, V6It is the Abbe number of the 6th eyeglass, V5It is the Abbe number of the 5th eyeglass.
The eyeglass mould group can meet following [formula 5].
[formula 5] F0V/T > 15,
Wherein, F0V is the field angle of eyeglass mould group, and T is the slave side of the object of first eyeglass to the distance of image planes.
The eyeglass mould group can meet following [formula 6].
[formula 6] (R1a-R1b)/(R1a+R1b) < 0.1,
Wherein, R1aIt is the radius of curvature of the side of the object of first eyeglass, R1bIt is the upper side of first eyeglass
Radius of curvature.
The point of inflexion of 5th eyeglass is located at and is separated by 0.6 to 0.9mm position centered on optical axis, the 5th mirror
Piece can meet following [formula 7].
[formula 7] -6 < (R5a-R5b)/(R5a+R5b) < 0.2,
Wherein, R5aIt is the radius of curvature of the side of the object of the 5th eyeglass, R5bIt is the upper side of the 5th eyeglass
Radius of curvature.
The eyeglass mould group can meet following [formula 8].
[formula 8] -25 < f1/T<-10
Wherein, f1It is the focal length of first eyeglass, T is the slave side of the object of first eyeglass to the distance of image planes.
The eyeglass mould group can meet following [formula 9].
[formula 9] 70 < | f5/ T | < 250,
Wherein, f5It is the focal length of the 5th eyeglass, T is the distance from the side of the object of first eyeglass to image planes.
The side of the object of first eyeglass is equipped with aperture.
Beneficial effect
By the invention it is possible to provide a kind of miniature eyeglass mould group with high-resolution and wide visual field angle.
Detailed description of the invention
Fig. 1 is the lens structure figure with the first embodiment of the present invention；
Fig. 2 is the modulation transfer function (MTF:Modulation of the first embodiment of the present invention shown in FIG. 1
Transfer Function) chart；
Fig. 3 is the aberration chart of first embodiment shown in FIG. 1；
Fig. 4 is the lens structure figure of the second embodiment of the present invention；
Fig. 5 is the MTF chart of second embodiment shown in Fig. 4；
Fig. 6 is the aberration chart of second embodiment shown in Fig. 4；
Fig. 7 is the lens structure figure of the third embodiment of the present invention；
Fig. 8 is the MTF chart of the third embodiment of the present invention shown in Fig. 7；
Fig. 9 is the aberration chart of 3rd embodiment shown in Fig. 7.
Specific embodiment
The present embodiment can there are many variations, because there are many embodiments, therefore specific embodiment are indicated enterprising in attached drawing
Row is described in detail.The purpose of this measure does not lie in the range for limiting specific embodiment, it is thus understood that disclosed item and technology model
It encloses including all changes, equivalent or even sub.When being illustrated to embodiment, such as think to the detailed of related known technology
Describing bright can produce on the gist of the invention in detail influences, then can be omitted its description.
The present invention is not limited to following embodiments, and first, second and third reality are illustrated in Fig. 1, Fig. 4 and Fig. 7
Apply the eyeglass mould group of example.In the following, the first embodiment based on Fig. 1, it may be said that the bright present invention, however structure and spy to each eyeglass
The explanation of sign also can be suitably used for other embodiments.However, the present invention is not limited to following the description, and according to specific applicable elements
It can be converted.
As shown in the Fig. 1 for the lens structure for illustrating the first embodiment of the present invention, one embodiment of the present of invention
Eyeglass mould group includes the first eyeglass (11), the second eyeglass (12), third eyeglass (13), the 4th from the upward arranged in sequence in object side
Eyeglass (14), the 5th eyeglass (15) and the 6th eyeglass (16).
Eyeglass mould group of the invention may include the imaging optical system being made of six eyeglasses.Also that is, eyeglass mould group can
It is made of the first eyeglass to the 6th eyeglass.However, eyeglass mould group will not be only limitted to include six eyeglasses, and as needed can be with
Including other constituent elements.For example, eyeglass mould group can also include the aperture (stop) (S) for adjusting light quantity.In addition, the 6th eyeglass
On to can also sequentially form optical filter (IF) and the image planes (IP) including imaging sensor.
Therefore, the image of things can be incident to the image planes equipped with imaging sensor after the first eyeglass to the 6th eyeglass
(IP) on.In addition, described image sensor may include charge coupled cell (CCD:Charged Coupled Device) and
Complementary metal oxide semiconductor (CMOS:Complementary Metal-Oxide Semiconductor), but do not limit to
In this, all kinds of imaging sensors used in the art can also be used.
First eyeglass to the 6th eyeglass can be made of plastics or glass.Further, in order to reduce aberration
(Aberration), first eyeglass at least one eyeglass into the 6th eyeglass may include the aspherical of one or more.
By reference to the specific embodiment of Fig. 1 it is found that first eyeglass (11) has negative index, and is formed to have
There are the side of the object (11a) of convex and the upper side (11b) of spill.Since first eyeglass (11) is formed with negative folding
Rate is penetrated, so as to so that the visual angle of entire eyeglass broadens.Since first eyeglass (11) has negative index, so as to most
Big degree reduces incident light and is run through eyeglass mould group.The negative index of first eyeglass (11) is higher, and field angle can be wider, but
Field angle is wide, is not easy to carry out the correction of aberration.
Specifically, first eyeglass (11) can satisfy following [formula 1].
[formula 1] -35 < f1/ f < -16,
Wherein, f is the focal length of entire eyeglass mould group, f1It is the focal length of first eyeglass.[formula 1] indicates the first eyeglass
Focal length and entire eyeglass mould group focal length ratio.When being more than upper limit value, it is not easy to obtain required field angle (F0V), and
When being more than lower limit value, since the refractive index of eyeglass can be excessive, it is not easy aberration correction.
In addition, first eyeglass (11) can also meet following [formula 6].
[formula 6] (R1a-R1b)/(R1a+R1b) < 0.1,
Wherein, R1aIt is the radius of curvature of the side of the object (11a) of first eyeglass (11), R1bIt is first eyeglass
(11) radius of curvature of upper side (11b).The ratio between radius of curvature of first eyeglass (11) as described above can be optimization
The condition of the shape of first eyeglass (11).
In addition, first eyeglass (11) can also meet following [formula 8].
[formula 8] -25 < f1/ T < -10,
Wherein, f1It is the focal length of first eyeglass, T is from the side of the object (11a) of first eyeglass to image shape
At the distance of face, that is, image planes (IP).T indicates the overall length for constituting the optical system of eyeglass mould group, and T value is smaller, may be implemented
Small optical system.
However, when T value becomes smaller, it is meant that number of lenses will receive limitation, and as number of lenses is limited, it more difficult to correct
Aberration.Ratio between the focal length of first eyeglass and the overall length of entire optical system can be, in the eyeglass including six eyeglasses
The condition of the performance of the first eyeglass can be optimized in mould group.When being more than upper limit value, it is not easy to obtain required field angle, and ought be not
When full lower limit value, since the refractive index of eyeglass can be excessive, aberration characteristic can be deteriorated.
Second eyeglass (12) have positive refracting power, and be formed include convex side of the object (12a) and convex
Upper side (11b).Second eyeglass (12) is formed as can optically focused.
The third eyeglass (13) have refractive index, it is therefore preferred to have negative index, and be formed include spill object
The upper side (13b) of body side surface (13a) and spill.The third eyeglass (13) plays the role of aberration correction.
In addition, the third eyeglass (13) can satisfy following [formula 3].
[formula 3] V1-V3> 25,
Wherein, V1It is the Abbe number of the first eyeglass (11), V3It is the Abbe number of third eyeglass (13).Abbe number is as definition
The condition of the material of each eyeglass can be minimized the aberration of optical system by meeting the condition.
In addition, the third eyeglass (13) can be made of the material of the refractive index with 1.6 or more.Because by having height
The material of refractive index is made, and provides the eyeglass of refractive index with higher so as to lesser thickness.
4th eyeglass (14) have refractive index, it is therefore preferred to have positive refracting power, and be formed include spill object
The upper side (14b) of body side surface (14a) and convex.4th eyeglass (14) can reduce the optoelectronic induction of eyeglass mould group,
To utmostly less color difference.
5th eyeglass (15) has a refractive index, and the upper side of the side of the object including spill and convex, when from packet
When including the cross-section observation of optical axis, the side of the object of the 5th eyeglass (15) has the two or more points of inflexion.Described 5th
Eyeglass (15) can have positive refracting power or negative index, and the refractive index of the 5th eyeglass (15) can play optimization
The effect of astigmatism (Astigmatism) characteristic.
5th eyeglass (15) can satisfy following [formula 2].
[formula 2] | f5/ f | > 80,
Wherein, f is the focal length of entire eyeglass mould group, f5It is the focal length of the 5th eyeglass.The formula is for optimal
Change the formula of eyeglass mould group, when less than lower limit value, astigmatism characteristic can be deteriorated.
The eyeglass mould group can also meet following [formula 9].
[formula 9] 70 < | f5/ T | < 250,
Wherein, f5It is the focal length of the 5th eyeglass, T is from the side of the object of first eyeglass to image forming surface
Distance.[formula 9] is the condition that can optimize the performance and shape of the 5th eyeglass compared to overall length, the picture when being more than upper limit value
Poor characteristic can be deteriorated, and contract lenses mould group is not easy when less than lower limit value.
By reference to Fig. 1 it is found that the side of the object (15a) of the 5th eyeglass (15) may include the point of inflexion (P1, P2),
The point of inflexion (P1, P2) is formed in from the position that optical axis (X) is separated by pre-determined distance.
In the present specification, when from including the cross-section observation of optical axis (X), the point of inflexion (P1, P2) indicates radius of curvature hair
The position for changing.Also that is, the three-dimensional shape of the 5th eyeglass (15) has two points of inflexion in Fig. 1, to be separated by from optical axis
It is formed on the position of pre-determined distance round.
The point of inflexion of 5th eyeglass (15) is formed as being located at the position for being separated by 0.6 to 0.9mm centered on optical axis
On.This is the condition for optimizing the shape of the 5th eyeglass (15), and when being more than upper limit value, the size of eyeglass can become larger, and work as
It is difficult to obtain required refractive index when less than lower limit value.
5th eyeglass (15) can satisfy following [formula 7].
[formula 7] -6 < (R5a-R5b)/(R5a+R5b) < 0.2,
Wherein, R5aIt is the radius of curvature of the side of the object of the 5th eyeglass (15), R5bIt is the 5th eyeglass (15)
The radius of curvature of upper side.
The radius of curvature of the position of the point of inflexion and the 5th eyeglass (15) can be that can optimize the 5th eyeglass (15)
The condition of refractive index and size.
6th eyeglass (16) have negative index, and be formed as include spill side of the object (16a) and convex
Upper side (16b).The side of the object (16a) of the spill of 6th eyeglass (16) may include be formed on optical axis (X)
It one bending section (P4) and is formed in from the second bending section (P3, P4) on the position that optical axis (X) is separated by pre-determined distance.
In the three-dimensional shape of the 6th eyeglass (16), first bending section (P4) is formed in position raised on optical axis
It sets, and as it can be seen that second bending section (P3, P4) is formed in the axial ring projection of light from three-dimensional shape.
In addition, the con-vex upper side (16b) of the 6th eyeglass (16) may include the recessed portion being formed on optical axis (X)
(P6)。
The aberration characteristic of optical system, and the described 6th can be optimized by the shape of the 6th eyeglass (16) as described above
The relationship of eyeglass (16) and the 5th eyeglass (15) can satisfy following [formula 4].
[formula 4] V6-V5> 34,
Wherein, V6It is the Abbe number of the 6th eyeglass (16), V5It is the Abbe number of the 5th eyeglass (15).Abbe number is used as definition
The condition of the material of each eyeglass can utmostly reduce the aberration of optical system by meeting the condition.
Each embodiment according to the present invention can provide the eyeglass mould group with excellent light field angle and resolution ratio.
It is furthermore possible to also provide miniature eyeglass mould group.
Specifically, eyeglass mould group of the invention can satisfy following [formula 5].
[formula 5] F0V/T > 15,
Wherein, F0V is the field angle of eyeglass mould group, and T is the overall length of eyeglass mould group.The formula indicates the view of eyeglass mould group
The ratio between rink corner and overall length, the value is smaller, indicates that eyeglass mould group is reducing in increase or field angle, and the value the big, indicates mirror
Piece mould group is in diminution and field angle is increasing.When the less than lower limit value of the value, can not be obtained from six eyeglass mould groups required
Field angle.
Through the invention, the mirror of the wide visual field angle with about 80 degree or more can be obtained by 4.85mm or overall length below
Piece mould group, it is hereby achieved that the eyeglass mould group haveing excellent performance.
In one embodiment of the invention, aperture can be set in the side of the object (11a) of first eyeglass (11)
(S).The structure of optical system can have different performances according to the position of aperture.In optical system structure of the invention,
By the front of the side of the object (11a) in the first eyeglass (11), aperture (S) is set, can optimize aberration, field angle and
MTF characteristic.
In the following, structure and effect of the invention are described in more detail by specific embodiment.
Aspherical used in following each embodiment is the conic section (Conic) obtained by well known [formula 10]
Constant (K) and asphericity coefficient (A, B, C, D, E, F, G).In addition, " E and subsequent number " indicates 10 in following number
Power.Also that is, according to one embodiment, E-05 indicates 10-5。
[formula 10]
Z: from eyeglass vertex to the distance of optical axis direction；
R: perpendicular to the distance of optical axis
α: the inverse (α=1/radius) of the radius of curvature on the vertex of eyeglass；
K: conic constant；
A, B, C, D, E, F, G: asphericity coefficient.
[embodiment 1]
Following [tables 1] to [table 3] illustrates the example of the numerical value of the eyeglass mould group of the first embodiment of the present invention.First is real
The eyeglass mould group for applying example includes the first eyeglass (11), the second eyeglass (12), third eyeglass (13), the 4th eyeglass (14), the 5th mirror
Piece (15) and the 6th eyeglass (16), and optical filter (IF) and image planes (IP) arranged in sequence are on the upper side.In addition, described
The front of the side of the object (11a) of first eyeglass (11) is equipped with aperture (S).
Refer to the number in the face of eyeglass as shown in Figure 1 with following number.Below in [table 1], * indicates aspherical, [table 2]
Illustrate the conic constant and asphericity coefficient of the first eyeglass (11) to the 6th eyeglass (16).
In the following description, radius of curvature (R), thickness (t), focal length (f) unit be mm.
[table 1]
| Face number | Radius of curvature (R) | Thickness (t) | Refractive index (Nd) | Abbe number (Vd) | Appendix |
| Object | ∞ | ∞ | Object | ||
| *11a | 1.69952 | 0.32000 | 1.5441 | 56.1 | First eyeglass |
| *11b | 1.54575 | 0.08889 | |||
| *12a | 1.66864 | 0.67504 | 1.5441 | 56.1 | Second eyeglass |
| *12b | -8.58033 | 0.08500 | |||
| *13a | -6.40262 | 0.24000 | 1.651 | 21.5 | Third eyeglass |
| *13b | 14.34951 | 0.28008 | |||
| *14a | -350.00000 | 0.35000 | 1.651 | 21.5 | 4th eyeglass |
| *14b | -24.14953 | 0.37883 | |||
| *15a | -400.00000 | 0.57128 | 1.651 | 21.5 | 5th eyeglass |
| *15b | 576.99125 | 0.10125 | |||
| *16a | 1.96937 | 0.67382 | 1.535 | 56 | 6th eyeglass |
| *16b | 1.23594 | 0.27580 | |||
| IFa | ∞ | 0.21 | 1.5167 | 64.2 | IR optical filter |
| IFb | ∞ | 0.6 | |||
| IP | ∞ | 0.00000 | Picture |
[table 2]
[table 3]
| f | 3.975 | f1/f | -29.69 |
| f1 | -118.04 | f5/f | -90.53 |
| f2 | 2.62 | V1-V3 | 34.60 |
| f3 | -6.71 | V6-V5 | 34.50 |
| f4 | 39.50 | FOV/T | 16.58 |
| f5 | -359.84 | (R1a-R1b)/(R1a+R1b) | 0.05 |
| f6 | -9.10 | (R5a-R5b)/(R5a+R5b) | -5.52 |
| T | 4.85 | f1/T | -24.34 |
| 2y | 6.86 | f5/T | -74.19 |
By reference to Fig. 1 it is found that first eyeglass (11) has negative index, and the side of the object including convex
The upper side (11b) of (11a) and spill.Second eyeglass (12) has positive refracting power, and the side of the object including convex
The upper side (12b) of (12a) and convex.The third eyeglass (13) has negative index, and the side of the object including spill
The upper side (13b) of (13a) and spill.4th eyeglass (14) has positive refracting power comprising the side of the object of spill
The upper side (14b) of (14a) and convex.5th eyeglass (15) has negative index, and the side of the object including spill
The upper side (15b) of (15a) and convex.In addition, having on the position for being separated by pre-determined distance from optical axis (X) when from cross-section observation
There are two the points of inflexion.In addition, the 6th eyeglass has negative index, when from whole observation, the 6th eyeglass includes spill
Side of the object (16a) and convex upper side (16b), and be based on section, side of the object (16a) include three bending sections, on
Side (16b) includes a recessed portion.
In the first embodiment, Fn0It is 2, field angle (F0V) is 80.43 degree.In addition, by reference to [table 3] it is found that
The first embodiment can satisfy [formula 1] to [formula 9].
Also that is, the eyeglass mould group with excellent optical characteristics can be provided by first embodiment.Furthermore, it is possible to obtain
The shorter optical system of overall length, while the eyeglass mould group with excellent optical characteristics being provided.
Fig. 2 is the MTF chart of first embodiment, and illustrates and divide the image into multiple sections and when using section as unit
MTF coordinate.Spatial frequency with each section is increasing, and sensitivity can be declined with more slow slope.In the first embodiment,
Since the sensitivity maximum relative to last spatial frequency has dropped 0.1, relatively clear image can be obtained.
In addition, Fig. 3 is the spherical aberration for illustrating first embodiment, astigmatism and the chart for distorting aberration.By reference to
Fig. 3 is it is found that first embodiment can provide various aberration characteristics outstanding eyeglass mould group.
[embodiment 2]
[table 4] to [table 6] illustrates the example of the numerical value of the eyeglass mould group of the second embodiment of the present invention below.Second is real
The eyeglass mould group for applying example includes the first eyeglass (21), the second eyeglass (22), third eyeglass (23), the 4th eyeglass (24), the 5th mirror
Piece (25) and the 6th eyeglass (26), and optical filter (IF) and image planes (IP) arranged in sequence are on the upper side.In addition, described
Aperture (S) is equipped with before the side of the object (21a) of first eyeglass (21).
Refer to the number in the face of eyeglass as shown in Figure 4 with following number.In following [tables 4], * indicates aspherical, [table
5] conic constant and asphericity coefficient of the first eyeglass (21) to the 6th eyeglass (26) are indicated.
[table 4]
| Face number | Radius of curvature (R) | Thickness (t) | Refractive index (Nd) | Abbe number (Vd) | Appendix |
| Object | ∞ | ∞ | Object | ||
| *21a | 1.68828 | 0.32000 | 1.5441 | 56.1 | First eyeglass |
| *21b | 1.52443 | 0.07403 | |||
| *22a | 1.65132 | 0.67830 | 1.5441 | 56.1 | Second eyeglass |
| *22b | -7.65741 | 0.06000 | |||
| *23a | -8.64373 | 0.24000 | 1.651 | 21.5 | Third eyeglass |
| *23b | 8.37971 | 0.29521 | |||
| *24a | -350.00000 | 0.37228 | 1.651 | 21.5 | 4th eyeglass |
| *24b | -32.10239 | 0.38976 | |||
| *25a | -33.13406 | 0.59367 | 1.651 | 21.5 | 5th eyeglass |
| *25b | -31.81641 | 0.08387 | |||
| *26a | 1.86249 | 0.64029 | 1.535 | 56 | 6th eyeglass |
| *26b | 1.20603 | 0.29258 | |||
| IFa | ∞ | 0.21 | 1.5167 | 64.2 | IR optical filter |
| IFb | ∞ | 0.600000103 | |||
| IP | ∞ | 0.00000 | Picture |
[table 5]
[table 6]
| f | 3.9788 | f1/f | -23.30 |
| f1 | -92.71 | f5/f | 259.96 |
| f2 | 2.55 | V1-V3 | 34.60 |
| f3 | -6.45 | V6-V5 | 34.50 |
| f4 | 53.83 | FOV/T | 16.46 |
| f5 | 1034.32 | (R1a-R1b)/(R1a+R1b) | 0.05 |
| f6 | -9.67 | (R5a-R5b)/(R5a+R5b) | 0.02 |
| T | 4.85 | f1/T | -19.12 |
| 2y | 6.86 | f5/T | 213.26 |
By reference to Fig. 4 it is found that first eyeglass (21) has negative index, and the side of the object including convex
The upper side (21b) of (21a) and spill.Second eyeglass (22) has positive refracting power, and the side of the object including convex
The upper side (22b) of (22a) and convex.The third eyeglass (23) has negative index, and the side of the object including spill
The upper side (23b) of (23a) and spill.4th eyeglass (24) has positive refracting power, and the side of the object including spill
The upper side (24b) of (24a) and convex.5th eyeglass (25) has positive refracting power, and the side of the object including spill
The upper side (25b) of (25a) and convex.In addition, being separated by the position of pre-determined distance from optical axis (X) has when from cross-section observation
Two points of inflexion.In addition, the 6th eyeglass has negative index, and from whole observation when includes the side of the object of spill
The upper side (26b) of (26a) and convex, the side of the object (26a) include three bending sections based on section, the upper side
(26b) includes a recessed portion.
In the second embodiment, Fn0It is 2.13, field angle (F0V) is 79.82 degree.In addition, can by reference to [table 6]
Know, the second embodiment can satisfy [formula 1] in summary of the invention to [formula 9].
Also that is, the eyeglass mould group with excellent optical characteristics can be provided by second embodiment.It is furthermore possible to also provide
The shorter optical system of overall length, and the eyeglass mould group with excellent optical characteristics is provided.
Fig. 5 is the MTF chart of second embodiment, and illustrates and divide the image into multiple sections and when using section as unit
MTF coordinate.Spatial frequency with each section is increasing, and sensitivity is declined with more slow slope.In a second embodiment, by
0.1 is had dropped in the sensitivity maximum relative to last spatial frequency, relatively clear image can be obtained.
Fig. 6 is the spherical aberration for illustrating second embodiment, astigmatism and the chart for distorting aberration.It can by reference to Fig. 6
Know, second embodiment can provide various aberration characteristics excellent eyeglass mould group.
[embodiment 3]
Following [tables 7] to [table 9] illustrates the numerical example of the eyeglass mould group of the third embodiment of the present invention.Third is implemented
The eyeglass mould group of example includes the first eyeglass (31), the second eyeglass (32), third eyeglass (33), the 4th eyeglass (34), the 5th eyeglass
(35) and the 6th eyeglass (36), and optical filter (IF) and image planes (IP) arranged in sequence are on the upper side.In addition, described
Aperture (S) is equipped with before the side of the object (31a) of one eyeglass (31).
Following face number refers to the number in the face of eyeglass as shown in Figure 7.In following [tables 7], * indicates aspherical,
[table 8] illustrates the conic constant and asphericity coefficient of the first eyeglass (31) to the 6th eyeglass (36).
[table 7]
| Face number | Radius of curvature (R) | Thickness (t) | Refractive index (Nd) | Abbe number (Vd) | Appendix |
| Object | ∞ | ∞ | Object | ||
| *31a | 1.69892 | 0.32003 | 1.5441 | 56.1 | First eyeglass |
| *31b | 1.52562 | 0.08000 | |||
| *32a | 1.65495 | 0.68438 | 1.5441 | 56.1 | Second eyeglass |
| *32b | -7.58492 | 0.08000 | |||
| *33a | -6.97678 | 0.24000 | 1.64 | 21.5 | Third eyeglass |
| *33b | 10.54347 | 0.28114 | |||
| *34a | -249.99946 | 0.35000 | 1.64 | 21.5 | 4th eyeglass |
| *34b | -26.29078 | 0.38940 | |||
| *35a | -88.24401 | 0.56615 | 1.64 | 21.5 | 5th eyeglass |
| *35b | -63.89510 | 0.10406 | |||
| *36a | 1.88832 | 0.65521 | 1.535 | 56 | 6th eyeglass |
| *36b | 1.18367 | 0.28962 | |||
| IFa | ∞ | 0.21 | 1.5167 | 64.2 | IR optical filter |
| IFb | ∞ | 0.6 | |||
| IP | ∞ | 0.00000 | Picture |
[table 8]
[table 9]
| f | 4 | f1/f | -19.69 |
| f1 | -78.74 | f5/f | 87.40 |
| f2 | 2.56 | V1-V3 | 34.60 |
| f3 | -6.36 | V6-V5 | 34.50 |
| f4 | 44.74 | FOV/T | 17.26 |
| f5 | 349.59 | (R1a-R1b)/(R1a+R1b) | 0.05 |
| f6 | -8.75 | (R5a-R5b)/(R5a+R5b) | 0.16 |
| T | 4.85 | f1/T | -16.24 |
| 2y | 6.86 | f5/T | 72.08 |
By reference to Fig. 7 it is found that first eyeglass (31) has negative index, and the side of the object including convex
The upper side (31b) of (31a) and spill.Second eyeglass (32) has positive refracting power, and the side of the object including convex
The upper side (32b) of (32a) and convex.The third eyeglass (33) has negative index, and the side of the object including spill
The upper side (33b) of (33a) and spill.4th eyeglass (34) has positive refracting power, and the side of the object including spill
The upper side (34b) of (34a) and convex.5th eyeglass (35) has positive refracting power, and the side of the object including spill
The upper side (35b) of (35a) and convex.In addition, having on the position for being separated by pre-determined distance from optical axis (X) when from cross-section observation
There are two the points of inflexion.6th eyeglass has negative index, and from whole observation when include spill side of the object (36a) and
The upper side (36b) of convex, the side of the object (36a) include three bending sections based on section, upper side (36b) packet
Include a recessed portion.
In the 3rd embodiment, Fn0It is 2.13, field angle (F0V) is 83.71 degree.By reference to [table 9] it is found that institute
Stating 3rd embodiment can satisfy [formula 1] to [formula 9] in summary of the invention.
Also that is, the eyeglass mould group with excellent optical characteristics can be provided by 3rd embodiment.It is furthermore possible to also provide
The shorter optical system of overall length, and the eyeglass mould group with excellent optical characteristics is provided.
Fig. 8 is the MTF chart of 3rd embodiment, and illustrates and divide the image into multiple sections and when using section as unit
MTF chart.As spatial frequency is increasing in each section, sensitivity can be with more slow slope decline.In 3rd embodiment
In, since the sensitivity maximum relative to last spatial frequency has dropped 0.1, relatively clear image can be obtained.
Fig. 9 is the spherical aberration for indicating 3rd embodiment, astigmatism and the chart for distorting aberration.By reference to Fig. 9 it is found that
3rd embodiment can provide various aberration characteristics outstanding eyeglass mould group.
[accompanying drawings symbol description]
X: optical axis
11,21,31: the first eyeglass
12,22,32: the second eyeglass
13,23,33: third eyeglass
14,24,34: the four eyeglass
15,25,35: the five eyeglass
16,26,36: the six eyeglass
IF: optical filter
IP: image planes.
Claims (13)
1. a kind of eyeglass mould group, it is characterised in that:
It includes the first eyeglass from the upward arranged in sequence in object side, the second eyeglass, third eyeglass, the 4th eyeglass, the 5th eyeglass
And the 6th eyeglass；
First eyeglass has negative index, the upper side of side of the object and spill including convex；
Second eyeglass has positive refracting power, the upper side of side of the object and convex including convex；
The third eyeglass and the 4th eyeglass have refractive index；
5th eyeglass have refractive index, the upper side of side of the object and convex including spill, when from containing optical axis cut
When face is observed, the side of the object of the 5th eyeglass has the two or more points of inflexion；
6th eyeglass have negative index, the upper side of side of the object and convex including spill, and
The eyeglass mould group meets following [formula 1] and [formula 2],
[formula 1] -35 < f1/f<-16
[formula 2] | f5/f|>80
Wherein, f is the focal length of entire eyeglass mould group, f1It is the focal length of first eyeglass, f5It is the focal length of the 5th eyeglass.
2. eyeglass mould group according to claim 1, it is characterised in that:
The side of the object of 5th eyeglass includes the point of inflexion, which is formed in the position for being separated by pre-determined distance from optical axis
On.
3. eyeglass mould group according to claim 1, it is characterised in that:
The side of the object of the spill of 6th eyeglass includes the first bending section being formed on optical axis and is formed in from optical axis phase
Every the second bending section on the position of pre-determined distance.
4. eyeglass mould group according to claim 1, it is characterised in that:
The upper side of the convex of 6th eyeglass includes the recessed portion being formed on optical axis.
5. eyeglass mould group according to claim 1, it is characterised in that:
4th eyeglass has positive refracting power, and the upper side of the side of the object including spill and convex.
6. eyeglass mould group according to claim 1, it is characterised in that:
Meet following [formula 3],
[formula 3] V1-V3>25
Wherein, V1It is the Abbe number of the first eyeglass, V3It is the Abbe number of third eyeglass.
7. eyeglass mould group according to claim 1, it is characterised in that:
Meet following [formula 4],
[formula 4] V6-V5>34
Wherein, V6It is the Abbe number of the 6th eyeglass, V5It is the Abbe number of the 5th eyeglass.
8. eyeglass mould group according to claim 1, it is characterised in that:
Meet following [formula 5],
[formula 5] F0V/T > 15
Wherein, F0V is the field angle of eyeglass mould group, and T is the slave side of the object of first eyeglass to the distance of image planes.
9. eyeglass mould group according to claim 1, it is characterised in that:
Meet following [formula 6],
[formula 6] (R1a-R1b)/(R1a+R1b)<0.1
Wherein, R1aIt is the radius of curvature of the side of the object of first eyeglass, R1bIt is the curvature of the upper side of first eyeglass
Radius.
10. eyeglass mould group according to claim 1, it is characterised in that:
The point of inflexion of 5th eyeglass is located at and is separated by 0.6 to 0.9mm position centered on optical axis, and the 5th eyeglass
Meet following [formula 7],
[formula 7] -6 < (R5a-R5b)/(R5a+R5b)<0.2
Wherein, R5aIt is the radius of curvature of the side of the object of the 5th eyeglass, R5bIt is the curvature of the upper side of the 5th eyeglass
Radius.
11. eyeglass mould group according to claim 1, it is characterised in that:
Meet following [formula 8],
[formula 8] -25 < f1/T<-10
Wherein, f1It is the focal length of first eyeglass, T is the slave side of the object of first eyeglass to the distance of image planes.
12. eyeglass mould group according to claim 1, it is characterised in that:
Meet following [formula 9],
[formula 9] 70 < | f5/T|<250
Wherein, f5It is the focal length of the 5th eyeglass, T is the distance from the side of the object of first eyeglass to image planes.
13. eyeglass mould group according to claim 1, it is characterised in that:
The side of the object of first eyeglass is equipped with aperture.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160065034A KR101819650B1 (en) | 2016-05-26 | 2016-05-26 | Lens Module |
| KR10-2016-0065034 | 2016-05-26 |
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| Publication Number | Publication Date |
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| CN106597637A CN106597637A (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610945470.4A Expired - Fee Related CN106597637B (en) | 2016-05-26 | 2016-11-02 | Eyeglass mould group |
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| TWI626488B (en) | 2017-03-28 | 2018-06-11 | 大立光電股份有限公司 | Photographing optical lens assembly, image capturing unit and electronic device |
| TWI616700B (en) | 2017-04-17 | 2018-03-01 | 大立光電股份有限公司 | Optical image capturing lens assembly, imaging apparatus and electronic device |
| KR102102633B1 (en) * | 2019-04-12 | 2020-04-22 | 주식회사 세코닉스 | Small photographing wide angle lens system |
| JP6854576B2 (en) * | 2019-06-10 | 2021-04-07 | カンタツ株式会社 | Imaging lens |
| WO2021003721A1 (en) * | 2019-07-10 | 2021-01-14 | 深圳市大疆创新科技有限公司 | Optical imaging system and electronic device |
| CN111338058A (en) * | 2020-04-09 | 2020-06-26 | 南昌欧菲精密光学制品有限公司 | Optical lens, image capturing module and electronic device |
| CN113050256B (en) * | 2021-04-28 | 2022-08-09 | 天津欧菲光电有限公司 | Optical lens, camera module, electronic equipment and automobile |
| CN113467058B (en) * | 2021-08-09 | 2025-06-27 | 浙江舜宇光学有限公司 | An optical imaging system |
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| CN103713380A (en) * | 2012-10-02 | 2014-04-09 | 大立光电股份有限公司 | Image System Lens Group |
| CN203981955U (en) * | 2013-07-19 | 2014-12-03 | 富士胶片株式会社 | Pick-up lens and the camera head that possesses pick-up lens |
| CN104252031A (en) * | 2013-06-25 | 2014-12-31 | 三星电机株式会社 | Lens module |
| CN104516094A (en) * | 2013-10-03 | 2015-04-15 | 光燿科技股份有限公司 | Wide-angle optical lens |
| CN204422844U (en) * | 2012-07-18 | 2015-06-24 | 富士胶片株式会社 | Pick-up lens and possess the camera head of pick-up lens |
| CN104808316A (en) * | 2014-01-24 | 2015-07-29 | 大立光电股份有限公司 | Optical image capturing lens, image capturing device and mobile terminal |
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|---|---|---|---|---|
| JPH11160615A (en) * | 1997-11-25 | 1999-06-18 | Konica Corp | Large-diameter lens |
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2016
- 2016-05-26 KR KR1020160065034A patent/KR101819650B1/en not_active Expired - Fee Related
- 2016-11-02 CN CN201610945470.4A patent/CN106597637B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204422844U (en) * | 2012-07-18 | 2015-06-24 | 富士胶片株式会社 | Pick-up lens and possess the camera head of pick-up lens |
| CN103713380A (en) * | 2012-10-02 | 2014-04-09 | 大立光电股份有限公司 | Image System Lens Group |
| CN104252031A (en) * | 2013-06-25 | 2014-12-31 | 三星电机株式会社 | Lens module |
| CN203981955U (en) * | 2013-07-19 | 2014-12-03 | 富士胶片株式会社 | Pick-up lens and the camera head that possesses pick-up lens |
| CN104516094A (en) * | 2013-10-03 | 2015-04-15 | 光燿科技股份有限公司 | Wide-angle optical lens |
| CN104808316A (en) * | 2014-01-24 | 2015-07-29 | 大立光电股份有限公司 | Optical image capturing lens, image capturing device and mobile terminal |
Also Published As
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| KR20170133795A (en) | 2017-12-06 |
| CN106597637A (en) | 2017-04-26 |
| KR101819650B1 (en) | 2018-01-17 |
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