CN105892028A - Optical system - Google Patents
Optical system Download PDFInfo
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- CN105892028A CN105892028A CN201610507734.8A CN201610507734A CN105892028A CN 105892028 A CN105892028 A CN 105892028A CN 201610507734 A CN201610507734 A CN 201610507734A CN 105892028 A CN105892028 A CN 105892028A
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- Prior art keywords
- optical lens
- optical
- optical system
- curvature
- lens
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The embodiment of the invention discloses an optical system which comprises at least one pair of first optical lenses, wherein the first optical lenses are used for regulating the focal length of the optical system, and each first optical lens has at least two radii of curvature in a first direction; the first direction is vertical to the optical axis direction of the first optical lenses. In the optical system provided by the embodiment of the invention, the first optical lenses have at least two radii of curvature in the first direction, so that when the optical system works, the focal length of the optical system is regulated through changing the focal length of each first optical lens, and the distance between the first optical lenses is not needed to be regulated, so that the optical system is small in size and applicable to thinner electronic equipment.
Description
Technical field
The present invention relates to optical technical field, particularly relate to a kind of optical system.
Background technology
Along with the development of electronic technology, increasing electronic equipment is integrated with camera module, to realize taking the photograph
As function.When specifically applying, different occasions typically require described camera module and have different enlargement ratios,
Thus overall big visual field can be photographed, the small field of view examining little details can be photographed again.But
It is, the optical system in camera module in prior art, generally by changing the distance between its each mirror group
Realizing zoom, thus cause the length that existing optical system needs are bigger, volume is bigger, it is difficult to be applied to
In the most frivolous electronic equipment.
Summary of the invention
For solving above-mentioned technical problem, embodiments provide a kind of optical system, this optical system
Need not bigger length and can realize zoom, be suitable for application in the most frivolous electronic equipment.
For solving the problems referred to above, embodiments provide following technical scheme:
A kind of optical system, including:
At least one pair of first optical lens, described first optical lens is for regulating Jiao of described optical system
Away from, and described first optical lens the most at least has two radius of curvature, wherein, described
First direction is perpendicular to the optical axis direction of described first optical lens.
Preferably, the radius of curvature of described first optical lens various location in said first direction is not
With.
Preferably, described first optical lens the most at least has two radius of curvature, described
Second direction is perpendicular to the optical axis direction of described first optical lens and described first direction.
Preferably, described first optical lens various location radius of curvature in this second direction is different.
Preferably, the surface of described first optical lens is free form surface.
Preferably, with the summit of described free form surface as initial point, the position of fixing first direction, along described
The positive direction of second direction, the radius of curvature of described first optical lens is gradually reduced.
Preferably, with the summit of described free form surface as initial point, the position of fixing second direction, along described
The positive direction of first direction, the radius of curvature of described first optical lens is gradually increased.
Preferably, described optical system also includes: at least one pair of second optical lens, described second optics
Lens move with described first optical lens simultaneously, and described first optical lens after focusing enters
Row focal length compensates, so that described Imaging Clarity by Using.
Preferably, described second optical lens at least has on described first direction and/or described second direction
There are two radius of curvature.
Preferably, described second optical lens not coordination on described first direction and/or described second direction
The radius of curvature putting place is different.
Compared with prior art, technique scheme has the advantage that
The optical system that the embodiment of the present invention is provided, including: at least one pair of first optical lens, described
First optical lens is for regulating the focal length of described optical system, and described first optical lens is in first party
The most at least having two radius of curvature, wherein, described first direction is perpendicular to described first optical lens
Optical axis direction.As can be seen here, in the optical system that the embodiment of the present invention is provided, described first optics
Lens the most at least have two radius of curvature, thus when described optical system works, can
With the focal length by changing each first optical lens, regulate the focal length of described optical system, and without adjusting
Save the distance between each first optical lens, so that described optical system small volume, be suitable to application
In the most frivolous electronic equipment.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is some embodiments of the present invention, for those of ordinary skill in the art, not
On the premise of paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the first optical lens in the optical system that Fig. 1 is provided by one embodiment of the invention
Figure；
In the optical system that Fig. 2 is provided by another embodiment of the present invention, the structure of the first optical lens is shown
It is intended to；
The structural representation of the optical system that Fig. 3 is provided by one embodiment of the invention；
The structural representation of the optical system that Fig. 4 is provided by another embodiment of the present invention；
The structural representation of the optical system that Fig. 5 is provided by another embodiment of the present invention.
Detailed description of the invention
The most as described in the background section, existing optical system needs bigger length, and volume is relatively big, difficult
To be applied in the most frivolous electronic equipment.
In view of this, embodiments provide a kind of optical system, including: at least one pair of first light
Learning lens, described first optical lens is for regulating the focal length of described optical system, and described first optics
Lens the most at least have two radius of curvature, and wherein, described first direction is perpendicular to described
The optical axis direction of the first optical lens.
In the optical system that the embodiment of the present invention is provided, described first optical lens is the most up to
There are two radius of curvature less, thus when described optical system works, can be by changing each first light
Learn the focal length of lens, regulate the focal length of described optical system, and without regulate each first optical lens it
Between distance so that described optical system small volume, be suitable for application to the most frivolous electronics
In equipment.
Understandable, below in conjunction with the accompanying drawings for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from
The detailed description of the invention of the present invention is described in detail.
Elaborate detail in the following description so that fully understanding the present invention.But the present invention can
Being different from alternate manner described here implement with multiple, those skilled in the art can be without prejudice to this
Similar popularization is done in the case of invention intension.Therefore the present invention is not limited by following public being embodied as.
Embodiments providing a kind of optical system, this optical system includes:
At least one pair of first optical lens, as it is shown in figure 1, described first optical lens 10 is used for regulating institute
State, on the focal length of optical system, and described first optical lens 10 X in a first direction, at least there are two songs
Rate radius, wherein, described first direction X is perpendicular to the optical axis direction Z of described first optical lens 10.
It should be noted that due to focal length corresponding at described first optical lens 10 different curvature radius not
With, and the focal length of described optical system is by the focal length of the first optical lens 10 each in described optical system and each
Distance between first optical lens 10 determines, therefore, and the optical system that the embodiment of the present invention is provided,
When facing different zoom occasion, each first optical lens 10 can be moved by X in the first direction, logical
Cross the focal length utilized on each first optical lens 10 first direction X at different curvature radius, it is achieved zoom,
And without regulating the distance between each first optical lens 10, so that described optical system small volume,
It is suitable for application in the most frivolous electronic equipment,
On the basis of above-described embodiment, in one embodiment of the invention, so that described optics
Lens can realize more different focal length, described first optical lens 10 on described first direction X not
Radius of curvature at co-located is different, so that described optics provides can pass through each first optical lens
The cooperation of 10, it is achieved the regulation of more focal lengths.
On the basis of any of the above-described embodiment, in one embodiment of the invention, as in figure 2 it is shown,
Described first optical lens 10 at least has two radius of curvature, described second direction in second direction Y
Y is perpendicular to the optical axis direction Z and described first direction X of described first optical lens 10, so that institute
State optical system to be possible not only to X in the first direction and move each first optical lens 10 and change each first optical lens
The focal length of mirror 10, it is achieved the regulation of described optical system focal length, it is also possible to Y moves each in a second direction
One optical lens 10 changes the focal length of each first optical lens 10, it is achieved the tune of described optical system focal length
Joint.
On the basis of above-described embodiment, in an alternate embodiment of the present invention where, described first optics
The radius of curvature of lens 10 various location in described second direction Y is different, the most described first optical lens
The focal length of mirror 10 various location in described second direction Y is different, and this is not limited by the present invention,
Specifically depend on the circumstances.
On the basis of above-described embodiment, in one particular embodiment of the present invention, described first optics
The surface of lens 10 is free form surface, so that on described first optical lens 10 X in a first direction not
The radius of curvature in co-located district is different, and in second direction Y, the radius of curvature of various location is the most different,
But this is not limited by the present invention, as long as ensureing on described first optical lens 10 X in a first direction not
The radius of curvature in co-located district is different, and in second direction Y, the radius of curvature of various location is also different is
Can.
Preferably, the surface of described first optical lens 10 is non-rotationally-symmetric free form surface, in three-dimensional
Under coordinate, Z axis is set to the optical axis of described first optical lens 10, zero and described first optics
The free form surface summit of lens 10 overlaps, and the curved surface of its free form surface is the Z formula about X, Y,
Wherein, X is vertical paper direction, and Y is to be perpendicular to optical axis direction in paper, this formula particularly as follows:
Wherein, c represents the datum level of described free form surface or the curvature of auxiliary quadric surface；K is quadratic term coefficient,
Represent the conical surface degree of described free form surface；AiFor higher order term coefficient；A, b are higher order term.
During specific works, move described first optical lens 10 in the x, y direction, so that incident
Light is by the zones of different of described first optical lens 10, thus changes described first optical lens 10
Deviation degree to incident ray, by the optical system zoom along optical axis direction.
On the basis of above-described embodiment, in one embodiment of the invention, with described free form surface
Summit is initial point, the position of fixing first direction X, along the positive direction of described second direction Y, and described the
The radius of curvature of one optical lens 10 is gradually reduced.
In another embodiment of the present invention, with the summit of described free form surface as initial point, second is fixed
The position of direction Y, along the positive direction of described first direction X, the curvature of described first optical lens 10
Radius is gradually increased.
In yet another embodiment of the present invention, with the summit of described free form surface as initial point, first is fixed
The position of direction X, along the positive direction of described second direction Y, the curvature of described first optical lens 10
Radius is gradually reduced, and with the summit of described free form surface as initial point, the position of fixing second direction Y,
Along the positive direction of described first direction X, the radius of curvature of described first optical lens 10 is gradually increased.But
This is not limited by the present invention, specifically depends on the circumstances.
Concrete, as it is shown on figure 3, when the amount of movement of described first optical lens 10 is X=0, during Y=0,
Incident ray is not played deviation effect by optical system；
As shown in Figure 4, it is X=0, during Y=b, optical system when the amount of movement of described first optical lens 10
Incident ray is not played amplification by system；
As it is shown in figure 5, when the amount of movement of described first optical lens 10 is X=a, during Y=0, optical system
Incident ray is not acted the effect of reducing by system.
During from the foregoing, it will be observed that specifically apply, described optical system can move described along vertical optical axis direction
Different X, the Y of one optical lens 10 realizes continuous print zoom.
On the basis of any of the above-described embodiment, as shown in Figure 3-Figure 5, in one embodiment of the present of invention
In, described optical system also includes: at least one pair of second optical lens 20, described second optical lens 20
Move with described first optical lens 10 simultaneously, described first optical lens 10 after focusing
Carry out focal length compensation, so that described Imaging Clarity by Using.
On the basis of above-described embodiment, in one embodiment of the invention, described second optical lens
20 at least have two radius of curvature at described first direction X；In another embodiment of the present invention,
Described second optical lens 20 at least has two radius of curvature in described second direction Y；The present invention's
In another embodiment, described second optical lens 20 at least has two curvature at described first direction X
Radius, and described second optical lens 20 at least has two radius of curvature in described second direction Y, this
This is not limited by invention, specifically depends on the circumstances.
On the basis of above-described embodiment, in one embodiment of the invention, described second optical lens
20 on described first direction X the radius of curvature of various location different；Another enforcement in the present invention
In example, the radius of curvature of described second optical lens 20 various location in described second direction Y is different,
In yet another embodiment of the present invention, described second optical lens 20 is different on described first direction X
The radius of curvature of position is different, and described second optical lens 20 not coordination in described second direction Y
The radius of curvature putting place is different, and this is not limited by the present invention, specifically depends on the circumstances.
It should be noted that described second optical lens 20 is mainly by lens material, lens thickness and each
Interval and the shape of lens surface between lens realize focal length and compensate, and carry out the rectification of aberration.Preferably
, the surface of described second optical lens 20 is free form surface, due to every bit in Free-form Surface Theory
Curvature is different from, and therefore, described second optical lens 20 can be to the refraction of different directions incident ray
Direction is controlled, to reach to control the purpose of aberration.
In sum, the optical system that the embodiment of the present invention is provided, including: at least one pair of first optics
Lens 10, described first optical lens 10 is for regulating the focal length of described optical system, and described first light
Learning lens 10 and the most at least have two radius of curvature, wherein, described first direction is perpendicular to
The optical axis direction of described first optical lens 10.As can be seen here, the optical system that the embodiment of the present invention is provided
In system, described first optical lens 10 the most at least has two radius of curvature, thus in institute
When stating optical system works, described light can be regulated by changing the focal length of each first optical lens 10
The focal length of system, and without regulating the distance between each first optical lens 10, so that described light
System can not only realize the shooting of big visual angle and small angle, goes back small volume, is suitable for application to more come
In the most frivolous electronic equipment,
In this specification, various piece uses the mode gone forward one by one to describe, the explanation of each some importance be with
The difference of other parts, between various piece, identical similar portion sees mutually.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses
The present invention.Multiple amendment to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to embodiment illustrated herein, and
It is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. an optical system, it is characterised in that including:
At least one pair of first optical lens, described first optical lens is for regulating Jiao of described optical system
Away from, and described first optical lens the most at least has two radius of curvature, wherein, described
First direction is perpendicular to the optical axis direction of described first optical lens.
Optical system the most according to claim 1, it is characterised in that described first optical lens exists
On described first direction, the radius of curvature of various location is different.
Optical system the most according to claim 1 and 2, it is characterised in that described first optical lens
Mirror the most at least has two radius of curvature, and described second direction is perpendicular to described first optics
The optical axis direction of lens and described first direction.
Optical system the most according to claim 3, it is characterised in that described first optical lens exists
In described second direction, various location radius of curvature is different.
Optical system the most according to claim 4, it is characterised in that described first optical lens
Surface is free form surface.
Optical system the most according to claim 5, it is characterised in that with the top of described free form surface
Point is initial point, the position of fixing first direction, along the positive direction of described second direction, and described first optics
The radius of curvature of lens is gradually reduced.
Optical system the most according to claim 5, it is characterised in that with the top of described free form surface
Point is initial point, the position of fixing second direction, along the positive direction of described first direction, and described first optics
The radius of curvature of lens is gradually increased.
Optical system the most according to claim 1, it is characterised in that described optical system also includes:
At least one pair of second optical lens, described second optical lens moves with described first optical lens simultaneously,
Described first optical lens after focusing carries out focal length compensation, so that described optical system is clear
Clear imaging.
Optical system the most according to claim 8, it is characterised in that described second optical lens exists
At least there are on described first direction and/or described second direction two radius of curvature.
Optical system the most according to claim 9, it is characterised in that described second optical lens
On described first direction and/or described second direction, the radius of curvature of various location is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610507734.8A CN105892028A (en) | 2016-06-29 | 2016-06-29 | Optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610507734.8A CN105892028A (en) | 2016-06-29 | 2016-06-29 | Optical system |
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| Publication Number | Publication Date |
|---|---|
| CN105892028A true CN105892028A (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610507734.8A Pending CN105892028A (en) | 2016-06-29 | 2016-06-29 | Optical system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843978A (en) * | 2016-09-19 | 2018-03-27 | 三星电子株式会社 | Zoom lens, image collecting device and camera lens |
| CN111201466A (en) * | 2017-10-17 | 2020-05-26 | 索尼公司 | Variable focal length lens system and imaging apparatus |
| CN111201467A (en) * | 2017-10-17 | 2020-05-26 | 索尼公司 | Variable focal length lens system and imaging apparatus |
| CN113612910A (en) * | 2021-07-30 | 2021-11-05 | 维沃移动通信（杭州）有限公司 | Imaging device and electronic apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1748310A2 (en) * | 2005-07-27 | 2007-01-31 | Sony Corporation | Imaging lens device and imaging apparatus |
| CN201773213U (en) * | 2009-11-30 | 2011-03-23 | 贾怀昌 | Zooming system |
| CN102549478A (en) * | 2009-08-14 | 2012-07-04 | 爱克透镜国际公司 | Optics with simultaneous variable correction of aberrations |
| CN103988109A (en) * | 2011-10-07 | 2014-08-13 | 新加坡国立大学 | Mems-based zoom lens system |
| CN105388593A (en) * | 2015-12-28 | 2016-03-09 | 联想(北京)有限公司 | Lens, imaging apparatus and electronic device |
-
2016
- 2016-06-29 CN CN201610507734.8A patent/CN105892028A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1748310A2 (en) * | 2005-07-27 | 2007-01-31 | Sony Corporation | Imaging lens device and imaging apparatus |
| CN102549478A (en) * | 2009-08-14 | 2012-07-04 | 爱克透镜国际公司 | Optics with simultaneous variable correction of aberrations |
| CN201773213U (en) * | 2009-11-30 | 2011-03-23 | 贾怀昌 | Zooming system |
| CN103988109A (en) * | 2011-10-07 | 2014-08-13 | 新加坡国立大学 | Mems-based zoom lens system |
| CN105388593A (en) * | 2015-12-28 | 2016-03-09 | 联想(北京)有限公司 | Lens, imaging apparatus and electronic device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843978A (en) * | 2016-09-19 | 2018-03-27 | 三星电子株式会社 | Zoom lens, image collecting device and camera lens |
| CN107843978B (en) * | 2016-09-19 | 2021-08-27 | 三星电子株式会社 | Zoom lens, image pickup apparatus, and lens |
| CN111201466A (en) * | 2017-10-17 | 2020-05-26 | 索尼公司 | Variable focal length lens system and imaging apparatus |
| CN111201467A (en) * | 2017-10-17 | 2020-05-26 | 索尼公司 | Variable focal length lens system and imaging apparatus |
| CN113612910A (en) * | 2021-07-30 | 2021-11-05 | 维沃移动通信（杭州）有限公司 | Imaging device and electronic apparatus |
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Application publication date: 20160824 |