CN106066530A - Zoom lens and camera head - Google Patents
Zoom lens and camera head Download PDFInfo
- Publication number
- CN106066530A CN106066530A CN201610248303.4A CN201610248303A CN106066530A CN 106066530 A CN106066530 A CN 106066530A CN 201610248303 A CN201610248303 A CN 201610248303A CN 106066530 A CN106066530 A CN 106066530A
- Authority
- CN
- China
- Prior art keywords
- lens
- battery
- zoom
- zoom lens
- refractive power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
- Adjustment Of Camera Lenses (AREA)
Abstract
It is an object of the invention to provide a kind of miniature zoom lens and camera head that there is high zoom ratios and there is at whole zooming range favorable optical performance.To achieve these goals, described zoom lens is made up of the first battery of lens G1 configured successively from object side, the second battery of lens G2, the 3rd battery of lens G3, the 4th battery of lens G4, the 5th battery of lens G5 and the 6th battery of lens G6, wherein, 5th battery of lens G5 has negative refractive power, carry out from wide-angle side to the zoom of telescope end by least making the 5th battery of lens G5 move, and meet the conditional specified.
Description
Technical field
The present invention relates to optical system and camera head, particularly to being applicable to making of digital camera and digital code camera etc.
With the zoom lens in the camera head of solid-state imager and the camera head that possesses this zoom lens.
Background technology
All the time, the camera head employing solid-state imager of digital camera, digital code camera etc. has obtained general
And.These camera heads are used in the various purposes such as monitoring camera head.In recent years, along with the high score of solid-state imager
The development of resolution, corresponds to confirm that the high performance zoom ratio of the full HD system of the fine feature of subject is high
Miniature zoom lens is pursued by people.
As such zoom lens, all the time it is well known that the zoom lens of four groups of formula structures (for example, referring to
" patent documentation 1 ".).The zoom lens that patent documentation 1 is recorded have from object side configure successively positive and negative, just, positive first
～the 4th battery of lens, and on the premise of fixed first lens group and the 3rd battery of lens, by making the second battery of lens along optical axis side
Zoom is carried out to mobile in one direction.It addition, by making the 4th battery of lens move in the longitudinal direction along optical axis direction,
Being corrected and focusing the image planes variation produced with zoom.The zoom lens of such four groups of formula structures can be whole
Zooming range realizes high imaging performance.The zoom lens that this patent documentation 1 is recorded achieves the zoom ratio of 25 times of sizes.
In recent years, in order to seek the zoom lens with more high zoom ratios, it is proposed that the zoom lens of five groups of formula structures
Scheme is (for example, referring to " patent documentation 2 " and " patent documentation 3 ".).Such as, patent documentation 2 and patent documentation 3 are recorded
Zoom lens just has such as image side at the zoom lens of above-mentioned four groups of formula structures and has added the structure of fixing group.That is, at this
In a little zoom lens, have from object side configure successively positive and negative, just, the first positive and negative battery of lens～the 5th battery of lens,
On the premise of fixed first lens group, the 3rd battery of lens and the 5th battery of lens, by making the second battery of lens along optical axis direction one
Individual side is moved upward to carry out zoom, and by making the 4th battery of lens become along optical axis direction is mobile in the longitudinal direction adjoint
The burnt image planes variation produced is corrected and focuses.The size that zoom ratio is 35 times of the zoom lens that patent documentation 2 is recorded,
The size that zoom ratio is 30 times of the zoom lens that patent documentation 3 is recorded, compared with the zoom lens that patent documentation 1 is recorded, real
Show higher zoom ratio.
Prior art literature
Patent documentation patent documentation 1: Japanese Patent No. 4672860
Patent documentation 2: Japanese Patent No. 4823680
Patent documentation 3: Japanese Unexamined Patent Publication 2013-178409 publication
Summary of the invention
The problem that invention is to be solved
But, in the zoom lens described in patent documentation 2, although achieve higher zoom ratio, but due to adjoint
The aberration variation that zoom produces is big, it is difficult to realize good optical property at whole zooming range.On the other hand, at patent documentation
In zoom lens described in 3, although the aberration variation produced with zoom is suppressed, and achieves at whole zooming range
Good optical property, but compare with the zoom lens described in patent documentation 2, zoom ratio is low.
It is an object of the invention to, it is provided that there is high zoom ratios and have good optical in whole zooming range
The miniature zoom lens of energy.
For the method solving problem
To achieve these goals, the invention discloses a kind of zoom lens, it is characterised in that joined successively by from object side
The first battery of lens, the second battery of lens, the 3rd battery of lens, the 4th battery of lens, the 5th battery of lens and the 6th battery of lens institute structure put
Becoming, described 5th battery of lens has negative refractive power, carries out from wide-angle side to looking in the distance by least making the 5th battery of lens move
The zoom of end, and meet following conditional (1).
(1) 4.0 ＜ β 5T ＜ 6.0
Wherein,
The horizontal magnification multiplying power of described 5th battery of lens when β 5T is in telescope end.
The invention also discloses a kind of camera head, it is characterised in that be configured with in the image side of described zoom lens by by
The optical imagery that described zoom lens is formed is transformed to the imaging apparatus of the signal of telecommunication.
The effect of invention
According to the present invention, it is provided that and there is high zoom ratios and at whole zooming range, there is the little of good optical property
Type zoom lens.
Accompanying drawing explanation
Fig. 1 is the profile of the lens configuration example of the zoom lens representing embodiments of the invention 1.
Fig. 2 be the zoom lens of embodiment 1 be under wide-angle side state infinity focusing time spherical aberration diagram, astigmatism
Figure and distortion aberration diagram.
Fig. 3 be the zoom lens of embodiment 1 be under middle focal length state infinity focusing time spherical aberration diagram, as
Dissipate figure and distort aberration diagram.
Fig. 4 be the zoom lens of embodiment 1 be under telescope end state infinity focusing time spherical aberration diagram, astigmatism
Figure and distortion aberration diagram.
Fig. 5 is the profile of the lens configuration example of the zoom lens representing embodiments of the invention 2.
Fig. 6 be the zoom lens of embodiment 2 be under wide-angle side state infinity focusing time spherical aberration diagram, astigmatism
Figure and distortion aberration diagram.
Fig. 7 be the zoom lens of embodiment 2 be under middle focal length state infinity focusing time spherical aberration diagram, as
Dissipate figure and distort aberration diagram.
Fig. 8 be the zoom lens of embodiment 2 be under telescope end state infinity focusing time spherical aberration diagram, astigmatism
Figure and distortion aberration diagram.
Fig. 9 is the profile of the lens configuration example of the zoom lens representing embodiments of the invention 3.
Figure 10 be the zoom lens of embodiment 3 be under wide-angle side state infinity focusing time spherical aberration diagram, as
Dissipate figure and distort aberration diagram.
Figure 11 be the zoom lens of embodiment 3 be under middle focal length state infinity focusing time spherical aberration diagram,
Astigmatism figure and distortion aberration diagram.
Figure 12 be the zoom lens of embodiment 3 be under telescope end state infinity focusing time spherical aberration diagram, as
Dissipate figure and distort aberration diagram.
Figure 13 is the profile of the lens configuration example of the zoom lens representing embodiments of the invention 4.
Figure 14 be the zoom lens of embodiment 4 be under wide-angle side state infinity focusing time spherical aberration diagram, as
Dissipate figure and distort aberration diagram.
Figure 15 be the zoom lens of embodiment 4 be under middle focal length state infinity focusing time spherical aberration diagram,
Astigmatism figure and distortion aberration diagram.
Figure 16 be the zoom lens of embodiment 4 be under telescope end state infinity focusing time spherical aberration diagram, as
Dissipate figure and distort aberration diagram.
Symbol description
G1 ... the first battery of lens
G2 ... the second battery of lens
G3 ... the 3rd battery of lens
G4 ... the 4th battery of lens
G5 ... the 5th battery of lens
G6 ... the 6th battery of lens
VC ... stabilization group
S ... aperture
CG ... cover glass
Detailed description of the invention
Hereinafter, the embodiment of zoom lens disclosed in this invention and camera head is illustrated.
1. zoom lens
The composition of 1-1. optical system
The zoom lens of the present embodiment, it is characterised in that by the first battery of lens configured successively from object side, the second lens
Group, the 3rd battery of lens, the 4th battery of lens, the 5th battery of lens and the 6th battery of lens are constituted, and described 5th battery of lens has negative
Refractive power, is carried out from wide-angle side to the zoom of telescope end by least making the 5th battery of lens move, and meets bar described later
Part formula (1).
In the zoom lens of the present embodiment, while using above-mentioned six groups of formula structures, by meeting condition described later
Formula (1), and by making the interval (airspace) between each battery of lens change, it is thus possible to obtain there is high zoom ratios and whole
Zooming range has the miniature zoom lens of good optical property.Further, about action during zoom and when focusing and bar
The item of part formula describes after holding.
In the zoom lens of the present embodiment, as long as the refractive power of the 5th battery of lens is negative, then the refractive power of other lenses group
Power is just not particularly limited, and can require to use the most appropriate refractive power to join according to this zoom lens zoom ratio, optical property etc.
Put.Hereinafter, the composition etc. of each battery of lens is illustrated.
(1) first battery of lens and the second battery of lens
In the zoom lens of the present embodiment, the refractive power indefinite of the first battery of lens and the second battery of lens, each lens
The concrete lens composition of group is also not particularly limited.Such as, if using this first battery of lens as the battery of lens of positive refractive power,
Second battery of lens as the battery of lens of negative refractive power, the most easily realizes that zoom ratio is big, the varifocal mirror of focal length length when being in telescope end
Head.Meanwhile, the overall length that this zoom lens can be suppressed overall becomes big, is readily obtained miniature zoom lens.
Such as, when the battery of lens that the first battery of lens is positive refractive power, this first battery of lens can be to have from object side
Configure successively with a minus lens and plus lens engage obtained by cemented lens and at least one is positive signal-lens
Constitute.By such composition, the correction of the spherical aberration being in telescope end will become easy, especially can improve further and look in the distance
The optical property of end.
It addition, when the battery of lens that the second battery of lens is negative refractive power, be preferably the composition containing at least one plus lens.
By such composition, chromatic aberration correction etc. can be carried out well, it is thus possible to obtain the higher zoom lens of optical property.
(2) the 3rd battery of lens and the 4th battery of lens
In the zoom lens of the present embodiment, the refractive power of the 3rd battery of lens and the 4th battery of lens is not particularly limited,
The concrete lens composition of each battery of lens is also not particularly limited.Such as, if by the 3rd battery of lens and the 4th lens component
The most all as the battery of lens of positive refractive power, then to spherical aberration, coma and curvature of the image in whole zooming range
Correction will become easy, thus be easier to realize good optical property.
Such as, when using the 3rd battery of lens as the battery of lens of positive refractive power, the most at least contain a plus lens, and
At least one side of this plus lens is aspheric composition.Now, even if as the high zoom lens of zoom ratio, also can be in whole change
Burnt scope carries out the correction of spherical aberration and coma well.
It addition, when using the 3rd battery of lens as the battery of lens of positive refractive power, it also may be preferable at least contain a minus lens
Composition.Such as, by constituting the 3rd battery of lens with a plus lens and a minus lens, can realize with the lens that number is few
High-resolution zoom lens, can seek the miniaturization of zoom lens, lightweight and cost degradation.Wherein, when with one just
When lens and a minus lens constitute three battery of lens, for the foregoing reasons, the more preferably at least one side of this plus lens is non-
Sphere.
(3) the 5th battery of lens
5th battery of lens is the battery of lens with negative refractive power, as long as meeting conditional described later (1), its concrete lens
Constitute and be just not particularly limited.Wherein, by constituting the 5th battery of lens with a minus lens, the little of this zoom lens can be realized
Type and lightweight.
(4) the 6th battery of lens
Refractive power and the concrete lens of the 6th battery of lens are constructed without being particularly limited to, but from realizing this zoom lens
From the point of view of the aspect of miniaturization, the 6th battery of lens preferably has positive refractive power.By making to be configured at battery of lens by image planes side
Refractive power is just, thus can shorten back focal length from, reduce the overall length that zoom lens is overall.It addition, the 6th battery of lens is preferably by one
Individual lens are constituted.By such composition, miniaturization and the lightweight of this zoom lens can be realized.
(5) aperture
In the zoom lens of the present invention, the configuration of aperture is not particularly limited.No matter aperture is configured in this zoom lens
Which kind of interior position, can obtain the optical effect of the present invention.It addition, this aperture can be fixed relative to image planes, it is possible to use can
The composition of movement.But, in order to seek miniaturization radially while realizing the heavy caliber of this zoom lens, preferably the
The object side configuration aperture of three battery of lens.
Action during 1-2. zoom
Secondly, the action when zoom of the zoom lens of the present embodiment is illustrated.In this zoom lens, when from extensively
Angle end, when telescope end zoom, can make the 5th battery of lens with negative refractive power move.Thus, can suppress with zoom generation
Image space changes, and when this camera lens is the high zoom lens of zoom ratio, also can realize good optics at whole zooming range
Performance.
In the zoom lens of the present embodiment, during zoom, the concrete action of each battery of lens beyond the 5th battery of lens does not has
It is particularly limited to.But, from realize the object of the invention in terms of from the point of view of, preferably when from wide-angle side to telescope end zoom time, each
The action of mirror group is as follows.
(1) first battery of lens
First battery of lens is preferably fixing group.In zoom lens, it is generally the case that with the lens constituting other lenses group
Comparing, the external diameter of the lens constituting the first battery of lens is big and heavy.Therefore, by making the first battery of lens for fixing group, can realize using
The miniaturization of the mobile group of driving means etc. being driven moved when to zoom.It addition, be solid by making the first battery of lens
Determine group, the movement of position of centre of gravity when can prevent zoom.And then, can be in the unconverted situation of overall length of this zoom lens entirety
Under, simplify lens barrel and constitute.Wherein, the overall overall length of this zoom lens refers to, in the first battery of lens, is arranged in by object side
The object plane of lens and image planes between, distance on optical axis.
(2) second battery of lens
When from wide-angle side to telescope end zoom time, the second battery of lens is preferably with between the first battery of lens and the second battery of lens
Big every becoming, the mode that the interval of the second battery of lens and the 3rd battery of lens diminishes moves.By making the second battery of lens move,
Thus it is readily obtained the zoom lens of high zoom ratios.
(3) the 3rd battery of lens
3rd battery of lens can be fixed on optical axis direction during zoom fixing group, it is also possible to move along optical axis direction
Mobile group.But, based on obtaining the viewpoint of the zoom lens that zoom ratio is higher, optical property is high, the 3rd battery of lens preferably moves
Dynamic group.During zoom, by making the 3rd battery of lens move together with the second battery of lens, the second battery of lens and the 3rd lens component can be allowed
Load zoom effect.Thus, and only allow compared with the second battery of lens undertakes the situation of zoom effect, the aberration produced during zoom can be suppressed
Variation.Accordingly, it is capable to carry out aberration correction well with the lens of few number, high-resolution zoom lens can be constituted, i.e.
The higher zoom lens of optical property can be constituted in miniaturization ground.
It addition, when using the 3rd battery of lens as mobile group, from wide-angle side to telescope end zoom time, preferably make the 3rd saturating
Mirror group moves describing in the way of the recessed track in image side.During zoom, by making the 3rd battery of lens the most mobile, can suppress
With the image space change produced during zoom, can obtain at the high zoom lens of whole zooming range resolution.
(4) the 4th battery of lens
4th battery of lens can be any one in mobile group and fixing group, but is preferably mobile group.During zoom, logical
Cross and make the 4th battery of lens move, it is thus possible to suppression is with the image space change produced during zoom, can obtain at whole zoom model
Enclose the zoom lens that resolution is high.
It addition, when using the 4th battery of lens as mobile group, preferably being spaced in the 3rd battery of lens and the 4th battery of lens
From wide-angle side to middle focal length zoom time diminish, from middle focal length to the big mode of telescope end zoom time-varying, make the 4th lens
Group makees relative movement relative to the 3rd battery of lens.During zoom, by making the interval of the 3rd battery of lens and the 4th battery of lens so become
Change, it is suppressed that with the image space change produced during zoom, it is thus possible to obtain at the high zoom of whole zooming range resolution
Camera lens.Now, based on preferably suppress with zoom time produce image space change viewpoint, when from wide-angle side to telescope end
During zoom, preferably make the 3rd battery of lens and the 4th battery of lens respectively with different tracks, to describe the track recessed to image side
Mode moves.
(5) the 6th battery of lens
6th battery of lens is preferably fixing group.By making the 6th battery of lens for fixing group, can simplify and be used for making mobile group move
The composition of dynamic above-mentioned driving means.It addition, be fixing group by making the first battery of lens and the 6th battery of lens, thus easily make
Lens barrel becomes closed structure, can prevent water or dust from entering in lens barrel.
(6) aperture
As it has been described above, aperture can be fixed relative to image planes, it is possible to use movably constitute.But, when aperture is arranged in
During the object side of the 3rd battery of lens, make the 3rd battery of lens move when zoom in the case of, preferably make aperture and the 3rd battery of lens
Move integrally as one.Thus, as it has been described above, can seek radially while realizing the heavy caliber of this zoom lens
Miniaturization.
Action during 1-3. focusing
In this zoom lens, focus group is not particularly limited, but preferably using the 4th battery of lens as focus group.In this enforcement
In the composition of the zoom lens of example, the 4th battery of lens can be constituted with the lens that external diameter is less, now, the little of focus group can be realized
Type and lightweight, make rapid focus be possibly realized.Further, since focus group when the above-mentioned composition of focus group can reduce focusing
Amount of movement, therefore can realize the miniaturization of the overall overall length of this zoom lens.
Action during 1-4. stabilization
This zoom lens can have so-called stabilization group.Herein, stabilization group refers to, by with can be substantially vertical with optical axis
Battery of lens that on direction, move mode is constituted, that one or more lens are formed.By making stabilization group the most vertical with optical axis
Straight side moves up, it is thus possible to make as moving in optical axis generally perpendicular direction.Thus, can correct and image because of hand shaking etc.
Time the image fog brought of shake.
In the battery of lens constituting this zoom lens, can be using any one group of battery of lens as stabilization group.Alternatively, it is also possible to
Using a part for any one group of battery of lens of this zoom lens of composition as stabilization group.Such as, by using the second battery of lens as
Stabilization group, when the image fog producing shake during with above-mentioned shooting is corrected, can reduce the amount of movement of stabilization group.
1-5. conditional
Secondly, each conditional is illustrated.As it has been described above, this zoom lens, it is characterised in that using above-mentioned composition
While, meet following conditional (1).
(1) 4.0 ＜ β 5T ＜ 6.0
Wherein,
The horizontal magnification multiplying power of the 5th battery of lens described in when β 5T is in telescope end.
1-5-1. conditional (1)
Conditional (1) is the horizontal magnification multiplying power formula that regulation the 5th battery of lens is visible under farend state.By meeting bar
Part formula (1), even if thus when realizing the high zoom ratios of 35 times～45 times sizes, also can obtain having good at whole zooming range
The miniature zoom lens of good optical property.
If the numerical value of conditional (1) is more than higher limit, if laterally the putting of the telescope end state of the i.e. the 5th battery of lens
Big multiplying power becomes big, and the most each aberration correction will become difficulty, it is difficult to realizes good optical property at whole zooming range.The opposing party
Face, if the numerical value of conditional (1) is below lower limit, the horizontal magnification under farend state times if the i.e. the 5th battery of lens is visible
Rate diminishes, then the overall length that when being in telescope end, this zoom lens is overall becomes big, becomes the obstacle of camera lens miniaturization.
On the basis of obtaining these effects, the higher limit of conditional (1) is preferably 5.7, and more preferably 5.5.Conditional
(1) higher limit is the least, then, when realizing high zoom ratios, the correction of each aberration is the best, it is easier at whole zoom model
Enclose and realize good optical property.On the other hand, the lower limit of conditional (1) is preferably 4.2, and more preferably 4.5.Conditional
(1) lower limit is the biggest, then be easier to reduce the overall length of this zoom lens entirety of telescope end, even if when improving zoom ratio,
It is also easier to form miniature zoom lens.
1-5-2. conditional (2)
In the zoom lens of the present embodiment, when constituting five battery of lens with a minus lens, preferably meet below
Conditional (2).
(2) nd5 ＞ 1.85
Wherein, nd5 is the minus lens constituting the 5th battery of lens refractive index to d line (wavelength X=587.6nm).
Conditional (2) is the formula that regulation constitutes the refractive index of the minus lens of the 5th battery of lens.By with meeting conditional
(2) minus lens constitutes the 5th battery of lens, thus when zoom, by making the 5th battery of lens move, can carry out picture well
The correction of each aberrations such as face bending, can obtain the zoom lens at whole zooming range with high optical property.Further, since
5th battery of lens is to be made up of a minus lens, therefore can realize miniaturization and the lightweight of this zoom lens.
If the numerical value of conditional (2) is below lower limit, then the correction of curvature of the image etc. will become difficulty, it is difficult to whole
Individual zooming range maintains good optical property.
On the basis of obtaining these effects, the lower limit of conditional (2) is preferably 1.87, and more preferably 1.90.Condition
The lower limit of formula (2) is the biggest, and the correction of curvature of the image etc. is the easiest, it is easier to maintain good optics at whole zooming range
Performance.
1-5-3. conditional (3)
This zoom lens is it is also preferred that meet following conditional (3).
(3) 0.15 ＜ F1/Ft ＜ 0.35
Wherein, F1 is the focal length of the first battery of lens, and Ft is in the focal length that during telescope end, this zoom lens is overall.
Conditional (3) is focal length and the ratio of the focal length of this zoom lens entirety when being in telescope end of regulation the first battery of lens
Formula.By meeting conditional (3), thus when realizing high zoom ratios, also can realize on the total length direction of camera lens is further
Miniaturization, can obtain the higher zoom lens of optical property.
If the numerical value of conditional (3) is more than higher limit, then the refractive power of the first battery of lens is little, when improving zoom ratio
Time, the overall length of zoom lens entirety becomes big, it is difficult to realize the miniaturization of this zoom lens.On the other hand, if conditional (3)
Numerical value is below lower limit, then the refractive power of the first battery of lens is excessive, and the correction of spherical aberration or chromatic aberration will become difficulty.Cause
This, in order to obtain good optical property at whole zooming range, can increase lens number required when carrying out aberration correction,
The most also the miniaturization of this zoom lens it is difficult to.
On the basis of obtaining these effects, the higher limit of conditional (3) is preferably 0.32, and more preferably 0.30.Condition
The higher limit of formula (3) is the least, then, when realizing high zoom ratios, also can reduce the overall length that zoom lens is overall, be readily obtained small-sized
Zoom lens.On the other hand, the lower limit of conditional (3) is preferably 0.18, and more preferably 0.2.The lower limit of conditional (3) is more
Greatly, then the correction of spherical aberration or chromatic aberration is the easiest, is readily obtained and has good optical property at whole zooming range
Zoom lens.
Zoom lens according to the present embodiment, it is possible to provide there is high zoom ratios and have good at whole zooming range
The miniature zoom lens of optical property.For the zoom lens of the present embodiment, even if realizing the high zoom of 35 times～45 times sizes
Than time, also can obtain the miniature zoom lens at whole zooming range with good optical property.
2. camera head
Secondly, the camera head of the present invention is illustrated.The camera head of the present invention, it is characterised in that have above-mentioned
The zoom lens of the present invention and be configured at the image planes side of this zoom lens and optical imagery that this zoom lens is formed is transformed into
The imaging apparatus of the signal of telecommunication., imaging apparatus etc. is not particularly limited herein, ccd sensor or cmos sensor etc. can be used
Solid-state imager etc., the camera head of the present invention is suitable for these solids that employ of digital camera or camera etc. and takes the photograph
The camera head of element.It addition, this camera head can be the fixed shooting of lens that lens are fixed on housing certainly
Device, it is also possible to be slr camera or the camera head of the camera lens switch type without anti-single-lens camera etc..
Secondly, it is shown that the present invention is specifically described by embodiment.But, the present invention is not limited to below example.
Set forth below for the zoom lens of each embodiment be the shooting for digital camera, camera, silver halide film camera etc.
Image pickup optical system in device (Optical devices).It addition, in each lens profile figure, towards accompanying drawing, left is object side, right
Side is image planes side.
Embodiment 1
(1) composition of zoom lens
Fig. 1 is the lens profile figure of the lens composition of the zoom lens illustrating embodiments of the invention 1, and towards accompanying drawing,
The each lens profile figure being followed successively by under wide-angle side state, middle focal length state and telescope end state is started from above.This varifocal mirror
Head is by the first battery of lens G1 of the positive refractive power being arranged in order from object side, negative second battery of lens G2 of refractive power, positive refractive power
The 3rd battery of lens G3, the 4th battery of lens G4 of positive refractive power, the 5th battery of lens G5 of negative refractive power and the 6th of positive refractive power the
Battery of lens is constituted.
First battery of lens G1 by object side configure successively with convex surface facing the diverging meniscus lens of object side and plus lens
Cemented lens obtained by joint and plus lens are constituted.
Minus lens that second battery of lens G2 is configured successively by object side, with biconcave lens and plus lens engage obtained by connect
Close lens and minus lens is constituted.
Plus lens that 3rd battery of lens G3 is configured successively by object side and the diverging meniscus lens institute structure convex surface facing object side
Become.
4th battery of lens G4 is by the biconvex lens configured successively with object side and convex surface facing the diverging meniscus lens of image side
Obtained by joint, cemented lens is constituted.
5th battery of lens G5 is made up of a minus lens.
6th battery of lens G6 is made up of a plus lens convex surface facing image side.
In the zoom lens of this embodiment 1, when from wide-angle side to telescope end zoom time, the first battery of lens G1 fixes,
Two battery of lens G2 move to image side, and the 3rd battery of lens G3 and the 4th battery of lens G4 is according to different tracks, to describe to picture
The mode of the track that side is recessed moves, and the 5th battery of lens G5 moves to object side, and the 6th battery of lens G6 fixes.Thus, when from Radix Rumicis
End is when telescope end zoom, and the interval of the first battery of lens and the second battery of lens becomes big, the second battery of lens and described 3rd saturating
The interval of mirror group diminishes, and the interval between each battery of lens changes.
It addition, it is right by make the 4th battery of lens G4 carry out from infinity to adjacent object in the way of object side moves
Burnt.
And then, the second battery of lens G2 is stabilization group VC, by can in the way of mobile with in optical axis generally perpendicular direction structure
Become.By making the second battery of lens move in optical axis generally perpendicular direction, so that as in the side substantially vertical with optical axis
Upwards as movement, the image fog brought because of the shake during shootings such as hand shaking can be corrected.
Additionally, in FIG, " S " that the object side of the 3rd battery of lens G3 is marked is aperture diaphragm, and it is when zoom and
Three battery of lens G3 move integrally as one.It addition, " CG " that the image planes side of the 5th battery of lens G5 is marked is cover glass, table
Show low pass filter or infrared intercepting filter etc..It addition, be configured with ccd sensor or CMOS biography in the image side of cover glass
The imaging surface of the solid-state imager of sensor etc. or the image planes in the film face etc. of silver halide film.These references etc. exist
In each lens profile figure shown in other embodiments the most identical.
(2) numerical example
Secondly, the numerical example that this zoom lens applies concrete numerical value illustrates.Table 1 shows this change
The lens data of zoom lens.In Table 1, " face is numbered. " represents the order of the lens face counted from object side, and " r " represents lens
The radius of curvature in face, " d " represents lens face interval on optical axis, and " nd " represents the refraction to d line (wavelength X=587.6nm)
Rate, " vd " represents the Abbe number to d line.It addition, when lens face is aspheric surface, enclose " * (asterisk) " after face is numbered,
When lens face is diffraction surfaces, after face is numbered, enclose " # (well character) ".When lens face is aspheric surface or diffraction surfaces, bent
What rate radius " r " hurdle represented is radius of curvature.
Table 2 (2-1) is aspherical surface data.Table (2-1) shows asphericity coefficient when defining with following formula.Wherein, exist
In table 2 (2-1), " E-a " expression " × 10-a”。
[several 1]
Wherein, in above-mentioned formula, " r " represents curvature, and " h " represents the height from optical axis, and " k " represents circular cone coefficient,
" A4 ", " A6 ", " A8 ", " A10 " represent the asphericity coefficient corresponding to each power.
Table 2 (2-2) and table 2 (2-3) show various data.In table (2-2), it is shown that be in wide-angle side state,
The overall focal length (F) of this zoom lens under middle focal length state and telescope end state, F value (Fno), half angle of view (ω) and
Variable interval (D (i)).It addition, table 2 (2-3) shows the focal length of each battery of lens.
Table 3 is diffraction surfaces data.Table 3 shows diffraction progression (m) when defining, standard with following phase function
Change wavelength (λ), diffraction surfaces coefficient (C01, C02, C03, C04).Wherein, the most corresponding following phase place of C01, C02, C03, C04
C1, C2, C3, C4 in difference function.
[several 2]
It addition, show each conditional (1)～the numerical value of conditional (3) in table 12.And the unit of the length in each table
All " mm ", depending on angular unit all " ° ".Item involved by these tables also phase in each table shown in other embodiments
With, thus explanation omitted below.
And then, Fig. 2～Fig. 4 respectively illustrates this zoom lens and is in wide-angle side state, middle focal length state, telescope end shape
Longitudinal aberration diagram time focusing in infinity under state.For each longitudinal aberration diagram, towards accompanying drawing from what left beginning represented successively it is
Spherical aberration, astigmatism, distortion aberration.In each figure representing spherical aberration, the longitudinal axis is and the ratio of open F value, and transverse axis is scattered
Jiao, solid line represents the spherical aberration of d line (wavelength X=587.6nm), and dotted line represents the sphere mapping of F line (wavelength X=486.1nm)
Difference, chain-dotted line represents the spherical aberration of C line (wavelength X=656.3nm).In each figure representing astigmatism, the longitudinal axis is image height, transverse axis
For defocusing, solid line represents the astigmatism on sagittal plane, and dotted line represents the astigmatism on meridian plane.In representing each figure distorting aberration,
Represent be when the longitudinal axis be image height, transverse axis be to take % time distortion aberration.These items involved by longitudinal aberration figure are real at other
Execute in each figure shown in example too, thus explanation omitted below.
Table 1
Table 2
(2-1)
(2-2)
(2-3)
Table 3
Embodiment 2
(1) composition of optical system
Fig. 5 is the lens profile figure of the lens composition of the zoom lens representing embodiments of the invention 2.This zoom lens by
First battery of lens G1 of the positive refractive power being arranged in order from object side, negative second battery of lens G2 of refractive power, the of positive refractive power
Three battery of lens G3, the 4th battery of lens G4 of positive refractive power, the 5th battery of lens G5 of negative refractive power and the 6th lens of positive refractive power
Group is constituted.
First battery of lens G1 by object side configure successively with convex surface facing the diverging meniscus lens of object side and plus lens
Cemented lens obtained by joint and plus lens are constituted.
Minus lens that second battery of lens G2 is configured successively by object side, with biconcave lens and plus lens engage obtained by connect
Close lens and minus lens is constituted.
Plus lens that 3rd battery of lens G3 is configured successively by object side and the diverging meniscus lens institute structure convex surface facing object side
Become.
4th battery of lens G4 is by the biconvex lens configured successively with object side and convex surface facing the diverging meniscus lens of image side
Obtained by joint, cemented lens is constituted.
5th battery of lens G5 is made up of a minus lens.
6th battery of lens G6 is made up of a plus lens convex surface facing image side.
In the zoom lens of this embodiment 2, when from wide-angle side to telescope end zoom time, the first battery of lens G1 fixes,
Two battery of lens G2 move to image side, and the 3rd battery of lens G3 and the 4th battery of lens are all according to different tracks, to describe to image side
The mode of recessed track moves, and the 5th battery of lens G5 moves to object side, and the 6th battery of lens G6 fixes.Thus, when from wide-angle side
When telescope end zoom, the interval of the first battery of lens and the second battery of lens becomes big, the second battery of lens and described 3rd lens
The interval of group diminishes, and the interval between each battery of lens changes.
It addition, it is right by make the 4th battery of lens G4 carry out from infinity to adjacent object in the way of object side moves
Burnt.
And then, the second battery of lens G2 is stabilization group VC, by can in the way of mobile with in optical axis generally perpendicular direction structure
Become.By making the second battery of lens move in optical axis generally perpendicular direction, so that as in the side substantially vertical with optical axis
Upwards as movement, the image fog brought because of the shake during shootings such as hand shaking can be corrected.
(2) numerical example
Secondly, the numerical example that this zoom lens applies concrete numerical value illustrates.It table 4 is this varifocal mirror
The lens data of head, is aspherical surface data in table 5 (5-1), is various data in table 5 (5-2) and table 5 (5-3).It addition, table 6
In be diffraction surfaces data.It addition, table 12 shows conditional (1)～the numerical value of conditional (3).And then, Fig. 6～Fig. 8 is respectively
This zoom lens is in longitudinal aberration diagram during infinity focusing under wide-angle side state, middle focal length state, telescope end state.
Table 4
Table 5
(5-1)
(5-2)
(5-3)
Table 6
Embodiment 3
(1) composition of optical system
Fig. 9 is the lens profile figure of the lens composition of the zoom lens representing embodiments of the invention 3.This zoom lens by
First battery of lens G1 of the positive refractive power being arranged in order from object side, negative second battery of lens G2 of refractive power, the of positive refractive power
Three battery of lens G3, the 4th battery of lens G4 of positive refractive power, the 5th battery of lens G5 of negative refractive power and the 6th lens of positive refractive power
Group is constituted.
First battery of lens G1 by object side configure successively with convex surface facing the diverging meniscus lens of object side and plus lens
Cemented lens obtained by joint and plus lens are constituted.
Minus lens that second battery of lens G2 is configured successively by object side, with biconcave lens and plus lens engage obtained by connect
Close lens and minus lens is constituted.
Plus lens that 3rd battery of lens G3 is configured successively by object side and the diverging meniscus lens institute structure convex surface facing object side
Become.
4th battery of lens G4 is by the biconvex lens configured successively with object side and convex surface facing the diverging meniscus lens of image side
Obtained by joint, cemented lens is constituted.
5th battery of lens G5 is made up of a minus lens.
6th battery of lens G6 is made up of a plus lens convex surface facing image side.
In the zoom lens of this embodiment 3, when from wide-angle side to telescope end zoom time, the first battery of lens G1 fixes,
Two battery of lens G2 move to image side, and the 3rd battery of lens G3 and the 4th battery of lens G4 is according to different tracks, to describe to picture
The mode of the track that side is recessed moves, and the 5th battery of lens G5 moves to object side, and the 6th battery of lens G6 fixes.Thus, when from Radix Rumicis
End is when telescope end zoom, and the interval of the first battery of lens and the second battery of lens becomes big, the second battery of lens and described 3rd saturating
The interval of mirror group diminishes, and the interval between each battery of lens changes.
It addition, it is right by make the 4th battery of lens G4 carry out from infinity to adjacent object in the way of object side moves
Burnt.
And then, the second battery of lens G2 is stabilization group VC, and by can be in the way of mobile with in optical axis generally perpendicular direction
Constitute.By making the second battery of lens move in optical axis generally perpendicular direction, so that as substantially vertical with optical axis
As mobile on direction, the image fog that shake when can correct the shooting of hand shaking etc. brings.
(2) numerical example
Secondly, the numerical example that this zoom lens applies concrete numerical value illustrates.It table 7 is this varifocal mirror
The lens data of head, is aspherical surface data in table 8 (8-1), is various data in table 8 (8-2) and table 8 (8-3).It addition, table 9
In be diffraction surfaces data.It addition, table 12 shows conditional (1)～the numerical value of conditional (3).And then, Figure 10～Figure 12 is respectively
It it is this zoom lens longitudinal aberration diagram when being in the focusing of infinity under wide-angle side state, middle focal length state, telescope end state.
Table 7
Table 8
(8-1)
(8-2)
(8-3)
Table 9
Embodiment 4
(1) composition of optical system
Figure 13 is the lens profile figure of the lens composition of the zoom lens representing embodiments of the invention 4.This zoom lens
By the first battery of lens G1 of the positive refractive power being arranged in order from object side, negative second battery of lens G2 of refractive power, positive refractive power
The 6th of 3rd battery of lens G3, the 4th battery of lens G4 of positive refractive power, the 5th battery of lens G5 of negative refractive power and positive refractive power is saturating
Mirror group is constituted.
First battery of lens G1 by object side configure successively with convex surface facing the diverging meniscus lens of object side and plus lens
Obtained by joint, cemented lens, plus lens and plus lens are constituted.
Minus lens that second battery of lens G2 is configured successively by object side, with biconcave lens and plus lens engage obtained by connect
Close lens and minus lens is constituted.
Plus lens that 3rd battery of lens G3 is configured successively by object side and the diverging meniscus lens institute structure convex surface facing object side
Become.
The 4th battery of lens G4 bent moon born by the biconvex lens configured successively with object side and convex surface facing image side is saturating
Cemented lens obtained by mirror joint is constituted.
5th battery of lens G5 is made up of a minus lens.
6th battery of lens G6 is made up of a positive meniscus lens convex surface facing image side.
In the zoom lens of this embodiment 4, when from wide-angle side to telescope end zoom time, the first battery of lens G1 fixes,
Two battery of lens G2 move to image side, and the 3rd battery of lens G3 and the 4th battery of lens G4 is according to different tracks, to describe to picture
The mode of the track that side is recessed moves, and the 5th battery of lens G5 moves to object side, and the 6th battery of lens G6 fixes.Thus, when from Radix Rumicis
End is when telescope end zoom, and the interval of the first battery of lens and the second battery of lens becomes big, the second battery of lens and described 3rd saturating
The interval of mirror group diminishes, and the interval between each battery of lens changes.
It addition, it is right by make the 4th battery of lens G4 carry out from infinity to adjacent object in the way of object side moves
Burnt.
And then, the second battery of lens G2 is stabilization group VC, by can in the way of mobile with in optical axis generally perpendicular direction structure
Become.By making the second battery of lens move in optical axis generally perpendicular direction, so that as in the side substantially vertical with optical axis
Upwards as movement, the image fog brought because of the shake during shootings such as hand shaking can be corrected.
(2) numerical example
Secondly, the numerical example that this zoom lens applies concrete numerical value illustrates.It table 10 is this zoom
The lens data of camera lens, is aspherical surface data in table 11 (11-1), is various data in table 11 (11-2) and table 11 (11-3).
It addition, table 12 shows conditional (1)～the numerical value of conditional (3).And then, Figure 14～Figure 16 is that this zoom lens is in respectively
Longitudinal aberration diagram when focus in infinity under wide-angle side state, middle focal length state, telescope end state.
Table 10
Table 11
(11-1)
(11-2)
(11-3)
Table 12
| Embodiment | 1 | 2 | 3 | 4 |
| Fw | 4.35 | 4.35 | 4.35 | 4.35 |
| Ft | 184.00 | 164.00 | 150.08 | 158.00 |
| F1 | 41.199 | 42.055 | 41.497 | 45.030 |
| F2 | -6.022 | -6.283 | -6.074 | -7.036 |
| F3 | 16.975 | 18.185 | 21.155 | 17.797 |
| F4 | 16.069 | 15.242 | 15.264 | 15.164 |
| F5 | -5.712 | -5.962 | -6.546 | -5.813 |
| F6 | 11.278 | 10.952 | 10.762 | 11.707 |
| TTL | 86.00 | 86.00 | 86.00 | 93.55 |
| Conditional 1 | 5.34 | 5.18 | 4.75 | 4.93 |
| Conditional 2 | 2.001 | 2.001 | 2.001 | 1.921 |
| Conditional 3 | 0.224 | 0.256 | 0.277 | 0.285 |
Industrial applicibility
According to the present invention, it is possible to provide there is high zoom ratios and at whole zooming range, there is the little of good optical property
Type zoom lens and camera head.
Claims (11)
1. a zoom lens, it is characterised in that
By the first battery of lens configured successively from object side, the second battery of lens, the 3rd battery of lens, the 4th battery of lens, the 5th lens
Group and the 6th battery of lens are constituted,
Described 5th battery of lens has negative refractive power, carries out from wide-angle side to looking in the distance by least making the 5th battery of lens move
The zoom of end,
And meet following conditional (1),
(1) 4.0 ＜ β 5T ＜ 6.0
Wherein,
The horizontal magnification multiplying power of described 5th battery of lens when β 5T is in telescope end.
2. zoom lens as claimed in claim 1, it is characterised in that described 6th battery of lens has positive refractive power.
3. zoom lens as claimed in claim 1, it is characterised in that when carrying out zoom from wide-angle side to telescope end, described
6th battery of lens is fixed on optical axis direction.
4. zoom lens as claimed in claim 1, it is characterised in that described first battery of lens has a positive refractive power, described the
Two battery of lens have negative refractive power.
5. zoom lens as claimed in claim 1, it is characterised in that when carrying out zoom from wide-angle side to telescope end, with institute
State the first battery of lens and be fixed on optical axis direction, and make the interval of described first battery of lens and described second battery of lens become big, institute
State the mode that the interval of the second battery of lens and described 3rd battery of lens diminishes, make described second battery of lens move.
6. zoom lens as claimed in claim 1, it is characterised in that described 5th battery of lens is made up of a piece of minus lens, and
Meet following conditional (2),
(2) nd5 ＞ 1.85
Wherein,
Nd5 is the minus lens the constituting described 5th battery of lens refractive index to the d line of wavelength 587.6nm.
7. zoom lens as claimed in claim 1, it is characterised in that described 3rd battery of lens and described 4th battery of lens are all
There is positive refractive power.
8. the zoom lens as according to any one of claim 1～7, it is characterised in that by making described 4th battery of lens move
Move and carry out from infinity to the focusing of closer object.
9. zoom lens as claimed in claim 1, it is characterised in that
Described first battery of lens have from object side configure successively engage with a piece of minus lens and a piece of plus lens obtained by
Cemented lens and the most a piece of positive simple lens,
And meet following conditional (3),
(3) 0.15 ＜ F1/Ft ＜ 0.35
Wherein,
F1 is the focal length of the first battery of lens,
The focal length that this zoom lens when Ft is in telescope end is overall.
10. zoom lens as claimed in claim 1, it is characterised in that described second battery of lens is with substantially vertical with optical axis
Direction on the mode that can move constitute, by making the second battery of lens move in optical axis generally perpendicular direction, thus
Make as moving in optical axis generally perpendicular direction.
11. 1 kinds of camera heads, it is characterised in that there is the zoom lens as according to any one of claim 1～10, in institute
The image side stating zoom lens is provided with the imaging apparatus that the optical imagery formed by described zoom lens is transformed to the signal of telecommunication.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015087844A JP6568709B2 (en) | 2015-04-22 | 2015-04-22 | Zoom lens and imaging device |
| JP2015-087844 | 2015-04-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106066530A true CN106066530A (en) | 2016-11-02 |
| CN106066530B CN106066530B (en) | 2018-11-23 |
Family
ID=57419950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610248303.4A Active CN106066530B (en) | 2015-04-22 | 2016-04-20 | Zoom lens and photographic device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6568709B2 (en) |
| CN (1) | CN106066530B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108227154A (en) * | 2018-03-26 | 2018-06-29 | 中国计量大学 | A kind of mobile phone wide-angle zoom lens |
| CN108957712A (en) * | 2017-05-19 | 2018-12-07 | 富士胶片株式会社 | Zoom lens and photographic device |
| CN110412755A (en) * | 2018-04-27 | 2019-11-05 | 株式会社腾龙 | Zoom lens and photographic device |
| CN112904542A (en) * | 2021-01-28 | 2021-06-04 | 中国科学院西安光学精密机械研究所 | Low-distortion high-definition continuous zooming optical system |
| CN114615400A (en) * | 2019-01-03 | 2022-06-10 | 核心光电有限公司 | Camera, double camera and triple camera |
| CN114994885A (en) * | 2022-06-17 | 2022-09-02 | 湖南长步道光学科技有限公司 | Full-frame optical system with microspur function and film lens |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050102860A (en) * | 2004-04-23 | 2005-10-27 | 삼성테크윈 주식회사 | High magnification zoom lens |
| US20090147375A1 (en) * | 2007-12-07 | 2009-06-11 | Yoshifumi Sudoh | Zoom lens, imaging apparatus, and personal data assistant |
| CN104181682A (en) * | 2013-05-24 | 2014-12-03 | 株式会社腾龙 | Zoom Lens and Imaging Apparatus |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10333038A (en) * | 1997-06-05 | 1998-12-18 | Minolta Co Ltd | Zoom lens |
| JPH1172705A (en) * | 1997-08-29 | 1999-03-16 | Tochigi Nikon:Kk | Zoom lens provided with two and more focusing lens groups |
| JP5040408B2 (en) * | 2007-04-11 | 2012-10-03 | ソニー株式会社 | Zoom lens and imaging device |
| JP2009192771A (en) * | 2008-02-14 | 2009-08-27 | Sony Corp | Zoom lens, image pickup apparatus, and control method for zoom lens |
| TWI457633B (en) * | 2011-04-22 | 2014-10-21 | Ability Entpr Co Ltd | Zoom lens |
| JP5760965B2 (en) * | 2011-11-04 | 2015-08-12 | 株式会社ニコン | Variable magnification optical system, optical apparatus, and variable magnification optical system manufacturing method |
| JP6071465B2 (en) * | 2012-11-22 | 2017-02-01 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
| JP6143475B2 (en) * | 2013-01-30 | 2017-06-07 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
-
2015
- 2015-04-22 JP JP2015087844A patent/JP6568709B2/en active Active
-
2016
- 2016-04-20 CN CN201610248303.4A patent/CN106066530B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050102860A (en) * | 2004-04-23 | 2005-10-27 | 삼성테크윈 주식회사 | High magnification zoom lens |
| US20090147375A1 (en) * | 2007-12-07 | 2009-06-11 | Yoshifumi Sudoh | Zoom lens, imaging apparatus, and personal data assistant |
| CN104181682A (en) * | 2013-05-24 | 2014-12-03 | 株式会社腾龙 | Zoom Lens and Imaging Apparatus |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957712A (en) * | 2017-05-19 | 2018-12-07 | 富士胶片株式会社 | Zoom lens and photographic device |
| CN108957712B (en) * | 2017-05-19 | 2022-03-18 | 富士胶片株式会社 | Zoom lens and imaging device |
| CN108227154A (en) * | 2018-03-26 | 2018-06-29 | 中国计量大学 | A kind of mobile phone wide-angle zoom lens |
| CN110412755A (en) * | 2018-04-27 | 2019-11-05 | 株式会社腾龙 | Zoom lens and photographic device |
| CN110412755B (en) * | 2018-04-27 | 2022-11-04 | 株式会社腾龙 | Zoom lens and imaging device |
| CN114615400A (en) * | 2019-01-03 | 2022-06-10 | 核心光电有限公司 | Camera, double camera and triple camera |
| CN114615402A (en) * | 2019-01-03 | 2022-06-10 | 核心光电有限公司 | Dual camera |
| CN112904542A (en) * | 2021-01-28 | 2021-06-04 | 中国科学院西安光学精密机械研究所 | Low-distortion high-definition continuous zooming optical system |
| CN114994885A (en) * | 2022-06-17 | 2022-09-02 | 湖南长步道光学科技有限公司 | Full-frame optical system with microspur function and film lens |
| CN114994885B (en) * | 2022-06-17 | 2023-09-01 | 湖南长步道光学科技有限公司 | Full-frame optical system with micro-distance function and movie lens |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106066530B (en) | 2018-11-23 |
| JP2016206410A (en) | 2016-12-08 |
| JP6568709B2 (en) | 2019-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11215795B2 (en) | Optical assembly for a wide field of view point action camera with a low sag aspheric lens element | |
| US10746967B2 (en) | Optical assembly for a wide field of view point action camera with low field curvature | |
| CN104101991B (en) | Zoom lens and image pickup device including the same | |
| CN101408665B (en) | Rear-focusing type zoom lens and imaging apparatus | |
| CN104220918B (en) | Zoom lens and camera head | |
| CN104101992B (en) | Zoom lens and the image pick-up device including these zoom lens | |
| CN106066530B (en) | Zoom lens and photographic device | |
| CN104136956B (en) | Varifocal optical system and Optical devices | |
| CN104865683B (en) | Zoom lens and photographic device | |
| CN103576301B (en) | Zoom lens and the image pick-up device with zoom lens | |
| US10317652B1 (en) | Optical assembly for a wide field of view point action camera with low astigmatism | |
| CN102298201B (en) | Zooming lens and image picking device having the same | |
| CN105556368B (en) | Zoom lens, optical device and the method for manufacturing zoom lens | |
| CN101750720B (en) | Zoom lens and imaging apparatus | |
| CN101859018B (en) | Zoom lens and image taking device | |
| CN104181681B (en) | Zoom lens and camera head | |
| CN104730683B (en) | Zoom Lens And Imaging Apparatus | |
| JP2016045491A (en) | Zoom lens system, image capturing device, and camera | |
| CN104995543A (en) | Zoom lens system, interchangeable lens device, and camera system | |
| CN103529540B (en) | Zoom lens and image pick-up device | |
| CN105143950A (en) | Zoom lens and image capture device comprising same | |
| CN105467568A (en) | Zoom lens | |
| CN103454754A (en) | Zoom Lens And Image Pickup Apparatus Equipped With The Same | |
| CN102033305B (en) | Variable power optical system and imaging device | |
| CN106066531A (en) | Zoom lens and camera head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |