CN107843973B - Standard interchangeable tight shot - Google Patents
Standard interchangeable tight shot Download PDFInfo
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- CN107843973B CN107843973B CN201711193879.6A CN201711193879A CN107843973B CN 107843973 B CN107843973 B CN 107843973B CN 201711193879 A CN201711193879 A CN 201711193879A CN 107843973 B CN107843973 B CN 107843973B
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- 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
- 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
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
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- 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
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
Abstract
A kind of standard interchangeable tight shot, it include: the first eyeglass group and the second eyeglass group set gradually from the object side to image side, the first eyeglass group includes having the first eyeglass of negative power, the second eyeglass with negative power and the third eyeglass with positive light coke；Second eyeglass group include the 4th eyeglass with positive light coke, the 5th with positive light coke, the 6th eyeglass with negative power, with the cemented doublet of negative power, that is the 7th eyeglass, the 8th eyeglass with positive light coke, the 9th eyeglass with positive light coke, diaphragm are set between the 6th eyeglass and the 7th eyeglass；When shooting object from infinity to when short distance variation, the first eyeglass group is fixed, and the second eyeglass group focuses from image side to the movement of object side, the floating focusing of Ji Hou group；The present apparatus can satisfy the 8k resolution camera of matching silent frame and super35 picture, and without obvious dark angle, the minimum and cell breath that distorts is faint to wait videos and film shooting requirement.
Description
Technical field
The present invention relates to a kind of technology in optical device field, specifically a kind of standard interchangeable tight shot.
Background technique
Cinema scene is made to measure specifically for video captures such as film, TV plays, not only needs to match silent frame
Size sensor, with greater need for resolution ratio, optical aberration, in terms of combine shooting video physical condition synthesis examine
Consider, while being also required to make overall plans in terms of weight and cost.Cinema scene not only possesses most top optics quality, Er Qieqi
The design of mechanical structure has also fully taken into account the professional needs of film making, thus its is professional very strong.But due to film
The design difficulty and manufacture difficulty of camera lens are very high, and there are no a companys to release electricity truly at home so far
Shadow camera lens for shooting.During camera lens is focused, a series of displacement can occur for internal lens set, by specific range
Incident light focuses on imaging surface.During moving burnt between multiple focuses, the displacement of camera lens interior lens group can change picture
Face visual field size, this phenomenon become cell breath.At present the major defect of cinema scene include: 1) resolution ratio it is not high: at present electricity
The resolution ratio of shadow video camera can achieve 6K or 8K, but almost all of camera lens resolving power is not on the market
Height can not match high-resolution video camera and use；2) have obvious dark angle: due to optical reflection and the law of refraction limitation and
The limitation of camera lens plated film level, all camera lenses more or less can all have dark angle；And camera lens are not so good as film to the control at dark angle
Camera lens is harsh, therefore dark angle is obvious, is unable to satisfy video and film shooting uses；3) distortion is big: the picture of dynamic image
Distortion often seems to become apparent from than still photo, and pincushion or barrel distortion once will when dynamic element occurs in picture
Show shape at once, and can be more serious when the movement of video camera subjectivity visual angle；If the appearance within sweep of the eye of theater viewers is too
Apparent distortion, then it is possible that causing to move vertigo；So the image field of cinema scene must be as straight as possible；And due to phase
Machine camera lens is often inadequate to the control of distortion, so being unable to satisfy cinema scene to the high request of distortion；4) cell breath is obvious:
Camera lens can generate cell breath during being focused, and cell breath is in addition to can not almost discover for camera lens
Except composition changes, picture is not influenced by cell breath；And for film making, it carries out chasing after coke or in difference in picture
The gimmick that coke is moved between main body is very common, so very high to the requirement for inhibiting cell breath, general camera lens are unable to satisfy
It is required that.
Summary of the invention
The present invention In view of the above shortcomings of the prior art, proposes a kind of standard interchangeable tight shot, Neng Gouman
The 8k resolution camera of foot matching silent frame and super35 picture, without obvious dark angle, the minimum and cell breath that distorts is faint etc.
Video and film shooting requirement.
The present invention is achieved by the following technical solutions:
The present invention includes: the first eyeglass group and the second eyeglass group set gradually from the object side to image side, in which: the first eyeglass
Group includes having the first eyeglass of negative power, the second eyeglass with negative power and the third eyeglass with positive light coke；
Second eyeglass group includes the 4th eyeglass with positive light coke, the 5th with positive light coke, the with negative power the 6th
Eyeglass, the cemented doublet with negative power, i.e. the 7th eyeglass, the 8th eyeglass with positive light coke, with positive light coke
9th eyeglass, diaphragm are set between the 6th eyeglass and the 7th eyeglass；When shooting object changes from infinity to short distance, the
One eyeglass group is fixed, and the second eyeglass group focuses from image side to the movement of object side, and Ji Hou group, which floats, focuses.
The first eyeglass to third eyeglass in the first eyeglass group is lens, that is, be simple lens or simple lens and
The combination of cemented doublet, thus spherical aberration and color difference when optimizing nearly object distance, so that image quality is stablized during focusing.
Technical effect
Compared with prior art, the technology of the present invention effect includes:
1) to solve the problems, such as that existing camera lens resolution ratio is inadequate, the present invention joined Glass aspheric mirror in camera lens
Piece has been obviously improved resolving power and resolution ratio, enables the invention to the professional 8K for meeting at present highest resolution on the market
The use of resolution camera.
2) to solve the problems, such as that existing camera lens have obvious dark angle, the present invention improves periphery light ratio in design.
Even if periphery light ratio makes to present on picture by the light of entire camera lens also 35% or more when aperture standard-sized sheet
More evenly, be conducive to Correct exposure when film shooting.
3) big to solve the problems, such as that existing camera lens distort, present invention optimizes the structure of camera lens and optical paths, particularly
The symmetry of camera lens rear end group is strengthened, so that distortion is minimum, TV distortion is 1% hereinafter, ensure that picture from center to most
Deforming and being distorted will not occur in periphery.
4) to solve the problems, such as that existing camera lens cell breath is obvious, the present invention uses the side of rear group floating focusing
Formula.When shooting object from infinity to when short distance variation, pre-group is fixed, and rear group gathers from image space to object space movement
It is burnt.And especially optimize diaphragm at a distance from the eyeglass of front and back to optimal location, accomplish camera lens from infinitely as far as minimum distance focusing
When, picture visual field changes within 2%, effectively to weaken cell breath.
Detailed description of the invention
Fig. 1 is 1 structural schematic diagram of embodiment；
Fig. 2 is spherical aberration, the curvature of field, distortion figure of 1 camera lens of embodiment relative to d line；
Fig. 3 is coma figure of 1 camera lens of embodiment relative to d line；
Fig. 4 is 2 structural schematic diagram of embodiment；
Fig. 5 is spherical aberration, the curvature of field, distortion figure of 2 camera lens of embodiment relative to d line；
Fig. 6 is coma figure of 2 camera lens of embodiment relative to d line；
In figure: the first eyeglass group G1, diaphragm S, the second eyeglass group G2, the first eyeglass L1, the second eyeglass L2, third eyeglass
L3, the 4th eyeglass L4, the 5th eyeglass L5, the 6th eyeglass L6, the 7th eyeglass L7, front lens L71, rear lens L72, the 8th eyeglass
L8, the 9th eyeglass L9, image planes IMG.
Specific embodiment
Embodiment 1
As shown in Figure 1, the present embodiment includes: the first eyeglass with negative power set gradually from the object side to image side
L1, the second eyeglass L2 with negative power, the third eyeglass L3 with positive light coke, the 4th eyeglass with positive light coke
L4, the 5th L5, the 6th eyeglass L6 with negative power, diaphragm S, the glued mirror with negative power with positive light coke
Piece, i.e. the 7th eyeglass L7, the 8th eyeglass L8 with positive light coke, the 9th eyeglass L9 with positive light coke；When shooting object
When changing from infinity to short distance, the first eyeglass group G1 is fixed, and the second eyeglass group G2 is carried out from image side to object side is mobile
Focusing, Ji Hou group, which floats, focuses.
Eyeglass before and after the diaphragm, i.e. the object side curvature of the image side surface of the 6th eyeglass L6 and cemented doublet L7 are than meeting
(0.9,1.1), so that camera lens object distance, during infinitely change as far as short distance, the variation of the field angle of camera lens is small.If being lower than
The lower limit of the conditional, then the bore that will lead to eyeglass in front of diaphragm is excessive, so that lens aperture diameter and entire outer diameter
Increase, cost is substantially increased；If being higher than the upper limit of the conditional, camera lens object distance will lead to from infinitely as far as short distance change
In the process, the field angle variation of camera lens is excessive, and cell breath is obvious, and the shooting for being unfavorable for film uses.
The whole focal length of the standard interchangeable tight shot and the ratio of optic back focal meet (1.5,3.5), make
The focal length and rear burnt ratio for obtaining camera lens are in a suitable range.If being lower than the lower limit of the conditional, camera lens will lead to
It is burnt too long afterwards, so that the second eyeglass group G2 needs that there is higher focal power to go adjustment because of spherical aberration and periphery caused by focusing
The variation of coma and color difference, causes optical property sharply to deteriorate, and the resolution ratio of 8k is not achieved；If being higher than the upper of the conditional
Limit, then the rear coke that will lead to camera lens is too short, so that camera lens is not suitable for film camera on the market, practicability is deteriorated.
The ratio of the whole focal length of the focal length and standard interchangeable tight shot of the second eyeglass group G2 meet (1,
2), if being lower than the lower limit of the conditional, it is excessive to will lead to camera lens the second eyeglass group's G2 optical power profile, and then lead to the first mirror
Piece group's G1 focal power is too low, so that the eyeglass bore of the first eyeglass group G1 increases, overall weight increases, and is unfavorable for camera lens and is executing
Because of the focus process that object distance changes；If being higher than the upper limit of the conditional, camera lens the second eyeglass group's G2 light focus is caused to be spent weak,
So that camera lens entirety bore is excessive, it is unfavorable for the miniaturization of camera lens, is also unfavorable for the assembly and overall weight and center of gravity of camera lens
Adjustment.In addition also it is difficult to correct the variation because of spherical aberration and periphery color difference and coma caused by focusing.
The refractive index of the 9th eyeglass L9 meets (1.65,1.85), if being lower than the lower limit of the conditional, the lens
Refractive index it is too low, be unfavorable for correcting the axial chromatic aberration and ratio chromatism, of camera lens, while being difficult to compensate for the first eyeglass group G1 and being formed
Spherical aberration；If being higher than the upper limit of the conditional, the spherical aberration correction that will lead to the first eyeglass group G1 formation is excessive, makes
Lens performance reduces.Eyeglass price is too high simultaneously.
The 4th eyeglass in the second eyeglass group G2 into the 9th eyeglass at least one be non-spherical lens, thus aobvious
It writes and promotes resolving power, up to the video camera of 6k 8k resolution ratio uses at present to match.In addition it can make mirror using aspherical
The volume and weight of head is remarkably decreased, and realizes miniaturization.
The first eyeglass to third eyeglass in the first eyeglass group G1 is lens, that is, is simple lens or simple lens
With the combination of cemented doublet, thus spherical aberration and color difference when optimizing nearly object distance, so that image quality is stablized during focusing.
Preferably, the lens parameters in the present embodiment are specific as follows:
The EFL=50.0 of the present embodiment, TNO=1.30 (TNO is that camera lens calculates the f-number after transmitance), each eyeglass
Structural parameters are as shown in table 1, and imaging parameters are as shown in Figures 2 and 3.
1 lens construction parameter of table
| Surface serial number | Surface type | Radius of curvature | Thickness | Refractive index | Abbe number |
| Object plane | Z0 | ||||
| S1 | Spherical surface | -352.33 | 4.24 | 1.74 | 44.7 |
| S2 | Spherical surface | 152.40 | 6.91 | ||
| S3 | Spherical surface | 187.79 | 4.83 | 1.78 | 25.6 |
| S4 | Spherical surface | 61.11 | 9.22 | ||
| S5 | Spherical surface | 79.94 | 12.48 | 1.83 | 43.2 |
| S6 | Spherical surface | -168.31 | Z1 | ||
| S7 | Spherical surface | 53.23 | 8.19 | 1.83 | 43.2 |
| S8 | Spherical surface | 190.16 | 0.32 | ||
| S9 | Spherical surface | 36.09 | 7.11 | 1.75 | 27.5 |
| S10 | Spherical surface | 44.28 | 3.66 | ||
| S11 | Spherical surface | 87.58 | 2.42 | 1.76 | 26.6 |
| S12 | Spherical surface | 25.95 | 10.07 | ||
| Diaphragm | Plane | INF | 9.44 | ||
| S14 | Spherical surface | -24.77 | 2.54 | 1.78 | 25.7 |
| S15 | Spherical surface | 56.03 | 10.13 | 1.72 | 54.6 |
| S16 | Spherical surface | -43.93 | 0.80 | ||
| S17 | Spherical surface | 194.20 | 5.54 | 1.83 | 43.2 |
| S18 | Spherical surface | -90.99 | 1.63 | ||
| S19 | It is aspherical | 396.44 | 7.96 | 1.80 | 40.5 |
| S20 | It is aspherical | -72.47 | 39.21 | ||
| Image planes | - |
Table 2
| POS1 | POS2 | |
| Z0 | INF | 305 |
| Z1 | 8.72 | 1.05 |
| FOV | 46.00 | 45.36 |
From D0 to D1 change process, as object distance from it is infinite as far as nearest photo distance change process.FOV is camera lens
Field angle, from D0 to D1 change when, FOV has only changed 1.4%, and cell breath is faint.
The asphericity coefficient of the 9th eyeglass L9 is as shown in table 3.
3 camera lens asphericity coefficient of table
Wherein: K is circular cone coefficient, and e is scientific count number, such as e-005 indicates 10-5。
Embodiment 2
Compared with Example 1, the second eyeglass in the present embodiment and third lens set are at cemented doublet, the present embodiment camera lens
EFL=50.0, TNO=1.30 (TNO be camera lens calculate transmitance after f-number), the structural parameters of each eyeglass such as 4 institute of table
Show, imaging parameters are as shown in Figure 4 and Figure 5.
4 lens construction parameter of table
Table 5
| POS1 | POS2 | |
| Z0 | INF | 305 |
| Z1 | 8.75 | 1.00 |
| FOV | 45.95 | 45.30 |
From D0 to D1 change process, as object distance from it is infinite as far as nearest photo distance change process.FOV is camera lens
Field angle, from D0 to D1 change when, FOV has only changed 1.4%, and cell breath is faint.
The asphericity coefficient of the 9th eyeglass L9 is as shown in table 3.
6 camera lens asphericity coefficient of table
Wherein: K is circular cone coefficient, and e is scientific count number, such as e-005 indicates 10-5。
Above-mentioned specific implementation can by those skilled in the art under the premise of without departing substantially from the principle of the invention and objective with difference
Mode carry out local directed complete set to it, protection scope of the present invention is subject to claims and not by above-mentioned specific implementation institute
Limit, each implementation within its scope is by the constraint of the present invention.
Claims (3)
1. a kind of standard interchangeable tight shot characterized by comprising the first eyeglass set gradually from the object side to image side
Group and the second eyeglass group, in which: the first eyeglass group includes first eyeglass with the concave-concave of negative power, with negative power
The third eyeglass of object side is convex surface, image side surface is concave surface the second eyeglass and the biconvex with positive light coke；Second eyeglass group
Including with positive light coke the 4th eyeglass, the 5th with positive light coke, the 6th eyeglass with negative power, have it is negative
7th eyeglass of focal power, the 8th eyeglass of biconvex with positive light coke, biconvex with positive light coke the 9th eyeglass,
In: the 4th to the 6th eyeglass be object side be convex surface, image side surface is concave surface, the 7th eyeglass be object side be concave surface, image side
Face is convex surface, and diaphragm is set between the 6th eyeglass and the 7th eyeglass；When shooting object changes from infinity to short distance, the
One eyeglass group is fixed, and the second eyeglass group focuses from image side to the movement of object side；
The 4th eyeglass in the second eyeglass group into the 9th eyeglass at least one be non-spherical lens；
7th eyeglass is that two panels eyeglass gluing forms
Mirror surface before and after the diaphragm, i.e. the curvature of the object side of the image side surface and cemented doublet of the 6th eyeglass than meet (0.9,
1.1)；
The whole focal length of the standard interchangeable tight shot and the ratio of optic back focal meet (1.5,3.5)；
The ratio of the whole focal length of the focal length and standard interchangeable tight shot of the second eyeglass group meets (1,2)；
The refractive index of 9th eyeglass meets (1.65,1.85).
2. standard interchangeable tight shot according to claim 1, characterized in that the first eyeglass in the first eyeglass group
It is simple lens to third eyeglass；
The object side of first eyeglass is spherical surface, and radius of curvature is -352.33, the first eyeglass with a thickness of 4.24,
Refractive index is 1.74, Abbe number 44.7；The image side surface of first eyeglass is spherical surface, radius of curvature 152.4, the first eyeglass
Image side surface to the object side of the second eyeglass distance be 6.91；
The object side of second eyeglass is spherical surface, radius of curvature 187.79, the second eyeglass with a thickness of 4.83, roll over
Penetrating rate is 1.78, Abbe number 25.6；The image side surface of second eyeglass be spherical surface, radius of curvature 61.11, the second eyeglass
The distance of image side surface to the object side of third eyeglass is 9.22；
The object side of the third eyeglass is spherical surface, radius of curvature 79.94, third eyeglass with a thickness of 12.48, roll over
Penetrating rate is 1.83, Abbe number 43.2；The image side surface of third eyeglass is spherical surface, and radius of curvature is -168.31, third eyeglass
Image side surface to the object side of the 4th eyeglass distance be Z1；
The object side of 4th eyeglass is spherical surface, radius of curvature 53.23, the 4th eyeglass with a thickness of 8.19, roll over
Penetrating rate is 1.83, Abbe number 43.2；The image side surface of 4th eyeglass is spherical surface, radius of curvature 190.16, the 4th eyeglass
Image side surface to the object side of the 5th eyeglass distance be 0.32；
The object side of 5th eyeglass is spherical surface, radius of curvature 36.09, the 5th eyeglass with a thickness of 7.11, roll over
Penetrating rate is 1.75, Abbe number 27.5；The image side surface of 5th eyeglass be spherical surface, radius of curvature 44.28, the 5th eyeglass
The distance of image side surface to the object side of the 6th eyeglass is 3.66；
The object side of 6th eyeglass is spherical surface, radius of curvature 87.58, the 6th eyeglass with a thickness of 2.42, roll over
Penetrating rate is 1.76, Abbe number 26.6；The image side surface of 6th eyeglass be spherical surface, radius of curvature 25.95, the 6th eyeglass
The distance of image side surface to diaphragm is 10.07；
The diaphragm is plane, and the distance of the object side of the front lens of diaphragm to the 7th eyeglass is 9.44；
The object side of the front lens of 7th eyeglass is spherical surface, and radius of curvature is -24.77, the front lens of the 7th eyeglass
With a thickness of 2.54, refractive index 1.78, Abbe number 25.7；The median surface of 7th eyeglass is spherical surface, radius of curvature
Be 56.03, the rear lens of the 7th eyeglass with a thickness of 10.13, refractive index 1.72, Abbe number 54.6；7th eyeglass
The image side surface of rear lens be spherical surface, radius of curvature is -43.93, the image side surface of the rear lens of the 7th eyeglass to the 8th eyeglass
Object side distance be 0.8；
The object side of 8th eyeglass is spherical surface, radius of curvature 194.2, the 8th eyeglass with a thickness of 5.54, roll over
Penetrating rate is 1.83, Abbe number 43.2；The image side surface of 8th eyeglass is spherical surface, and radius of curvature is -90.99, the 8th eyeglass
Image side surface to the 9th eyeglass object lateral distance be 1.63；
The object side of 9th eyeglass is aspherical, radius of curvature 396.44, the 9th eyeglass with a thickness of 7.96,
Refractive index is 1.8, Abbe number 40.5；The object side of 9th eyeglass be it is aspherical, radius of curvature be -72.47, thickness
It is 39.21；The circular cone coefficient of the object side of 9th eyeglass is -60.546, and the circular cone coefficient of second surface is 1.135；9th mirror
The quadravalence asphericity coefficient of the object side of piece is 1.45E-07, and the quadravalence asphericity coefficient of second surface is 4.76E-04；9th
Six rank asphericity coefficients of the object side of eyeglass are -5.03E-06, and six rank asphericity coefficients of second surface are 6.23E-05；The
Eight rank asphericity coefficients of the object side of nine eyeglasses are 2.36E-05, and eight rank asphericity coefficients of second surface are -2.37E-07；
Ten rank asphericity coefficients of the object side of the 9th eyeglass are -4.12E-04, and ten rank asphericity coefficients of second surface are -2.76E-
09。
3. standard interchangeable tight shot according to claim 1, characterized in that the second eyeglass in the first eyeglass group
With third lens set at cemented doublet；
First eyeglass is simple lens, and the object side of the first eyeglass is spherical surface, and radius of curvature is -353.06, the first mirror
Piece with a thickness of 4.94, refractive index 1.64, Abbe number 54.7；The image side surface of first eyeglass is spherical surface, curvature half
Diameter is 152.13, and the distance of image side surface to the object side of the second eyeglass of the first eyeglass is 9.63；
The object side of second eyeglass is spherical surface, radius of curvature 187.67, the second eyeglass with a thickness of 4.91, roll over
Penetrating rate is 1.68, Abbe number 35.6；The object side of third eyeglass be spherical surface, radius of curvature 79.87, third eyeglass
With a thickness of 12.46, refractive index 1.83, Abbe number 43.2；The image side surface of third eyeglass is spherical surface, radius of curvature
It is -168.19, the distance of image side surface to the object side of the 4th eyeglass of third eyeglass is 9.07；
The object side of 4th eyeglass is spherical surface, radius of curvature 53.59, the 4th eyeglass with a thickness of Z1, reflect
Rate is 1.83, Abbe number 43.2；The image side surface of 4th eyeglass be spherical surface, radius of curvature 190.96, the 4th eyeglass
The distance of image side surface to the object side of the 5th eyeglass is 0.95；
The object side of 5th eyeglass is spherical surface, radius of curvature 36.51, the 5th eyeglass with a thickness of 6.22, roll over
Penetrating rate is 1.75, Abbe number 27.5；The image side surface of 5th eyeglass be spherical surface, radius of curvature 44.4, the 5th eyeglass
The distance of image side surface to the object side of the 6th eyeglass is 3.42；
The object side of 6th eyeglass is spherical surface, radius of curvature 87.37, the 6th eyeglass with a thickness of 2.38, roll over
Penetrating rate is 1.76, Abbe number 26.6；The image side surface of 6th eyeglass be spherical surface, radius of curvature 26.06, the 6th eyeglass
The distance of image side surface to diaphragm is 10.95；
The diaphragm is plane, and the distance of the object side of the front lens of diaphragm to the 7th eyeglass is 9.25；
The object side of the front lens of 7th eyeglass is spherical surface, and radius of curvature is -24.82, the front lens of the 7th eyeglass
With a thickness of 2.11, refractive index 1.78, Abbe number 25.7；The median surface of 7th eyeglass is spherical surface, and radius of curvature is
56.21, the rear lens of the 7th eyeglass with a thickness of 10.1, refractive index 1.72, Abbe number 54.6；After 7th eyeglass
The image side surface of eyeglass is spherical surface, and radius of curvature is -43.91, the object of the image side surface of the rear lens of the 7th eyeglass to the 8th eyeglass
The distance of side is 1.07；
The object side of 8th eyeglass is spherical surface, radius of curvature 194.08, the 8th eyeglass with a thickness of 5.73, roll over
Penetrating rate is 1.83, Abbe number 43.2；The image side surface of 8th eyeglass is spherical surface, and radius of curvature is -91.22, the 8th eyeglass
Image side surface to the object side of the 9th eyeglass distance be 1.42；
The object side of 9th eyeglass is aspherical, radius of curvature 396.51, the 9th eyeglass with a thickness of 7.58,
Refractive index is 1.8, Abbe number 40.5；The object side of 9th eyeglass be it is aspherical, radius of curvature be -73.09, thickness
It is 38.88；The circular cone coefficient of the object side of 9th eyeglass is -20.346, and the circular cone coefficient of second surface is 10.872；9th mirror
The quadravalence asphericity coefficient of the object side of piece is 7.42E-07, and the quadravalence asphericity coefficient of second surface is 7.35E-03；9th
Six rank asphericity coefficients of the object side of eyeglass are -4.38E-06, and six rank asphericity coefficients of second surface are 2.23E-06；The
Eight rank asphericity coefficients of the object side of nine eyeglasses are 2.37E-05, and eight rank asphericity coefficients of second surface are -4.52E-08；
Ten rank asphericity coefficients of the object side of the 9th eyeglass are -1.52E-09, and ten rank asphericity coefficients of second surface are -8.72E-
09。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711193879.6A CN107843973B (en) | 2017-11-24 | 2017-11-24 | Standard interchangeable tight shot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711193879.6A CN107843973B (en) | 2017-11-24 | 2017-11-24 | Standard interchangeable tight shot |
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| CN107843973B true CN107843973B (en) | 2019-08-23 |
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| CN105807400A (en) * | 2016-05-23 | 2016-07-27 | 深圳市东正光学技术有限公司 | Super-large-aperture wide-angle lens of single lens reflex camera |
| CN207529007U (en) * | 2017-11-24 | 2018-06-22 | 嘉兴中润光学科技有限公司 | Standard interchangeable tight shot |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807400A (en) * | 2016-05-23 | 2016-07-27 | 深圳市东正光学技术有限公司 | Super-large-aperture wide-angle lens of single lens reflex camera |
| CN207529007U (en) * | 2017-11-24 | 2018-06-22 | 嘉兴中润光学科技有限公司 | Standard interchangeable tight shot |
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| CN107843973A (en) | 2018-03-27 |
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