CN107843973A - Standard interchangeable tight shot - Google Patents
Standard interchangeable tight shot Download PDFInfo
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- CN107843973A CN107843973A CN201711193879.6A CN201711193879A CN107843973A CN 107843973 A CN107843973 A CN 107843973A CN 201711193879 A CN201711193879 A CN 201711193879A CN 107843973 A CN107843973 A CN 107843973A
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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
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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
- G02B13/0055—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
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
A kind of standard interchangeable tight shot, including：The the first eyeglass group and the second eyeglass group set gradually from the object side to image side, the first eyeglass group include the first eyeglass with negative power, the second eyeglass with negative power and the 3rd eyeglass with positive light coke；Second eyeglass group includes the 4th eyeglass with positive light coke, the 5th with positive light coke, the 6th eyeglass, the cemented doublet with negative power with negative power, that is the 7th eyeglass, the 8th eyeglass with positive light coke, the 9th eyeglass with positive light coke, diaphragm are arranged between the 6th eyeglass and the 7th eyeglass；When shooting object is from infinity to when closely changing, the first eyeglass group is fixed, and the second eyeglass group moves from image side to thing side and focused, and Ji Hou groups, which float, focuses；The present apparatus disclosure satisfy that the 8k resolution cameras of matching silent frame and super35 pictures, and without obvious dark angle, distortion is minimum and cell breath is faint waits video and film shooting requirement.
Description
Technical field
The present invention relates to a kind of technology in optics field, specifically a kind of standard interchangeable tight shot.
Background technology
Cinema scene is made to measure specifically for video captures such as film, TV plays, not only needs to match silent frame
Size sensor, examined with greater need for the physical condition synthesis that shooting video is combined in resolution ratio, optical aberration, cell breath etc.
Consider, while be also required to make overall plans in terms of weight with 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, do not have also a company 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 is focused on imaging surface.During Jiao is moved between multiple focuses, the displacement of camera lens interior lens group can change picture
Face visual field size, this phenomenon turn into cell breath.The major defect of cinema scene includes at present：1) resolution ratio is not high：Electricity at present
The resolution ratio of shadow video camera can reach 6K or 8K, but almost all of camera lens resolving power is not on the market
Height, high-resolution video camera can not be matched and used；2) there is obvious dark angle：Due to optical reflection and the law of refraction limitation and
The horizontal limitation of camera lens plated film, all camera lenses more or less can all have dark angle；And control of the camera lens to dark angle is not so good as film
Camera lens is harsh, therefore dark angle is obvious, can not meet that video and film shooting use；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
Obvious distortion, then be likely to result in moving vertigo；So the image field of cinema scene must be as straight as possible；And due to phase
Control of the machine camera lens often to distortion is inadequate, so can not meet high request of the cinema scene to distortion；4) cell breath is obvious：
Camera lens can produce cell breath during being focused, and cell breath is except can not almost discover for camera lens
Outside composition changes, picture is not influenceed by cell breath；And carry out chasing after Jiao or in difference for film making, in picture
Moved between main body Jiao gimmick it is very common, so to suppress cell breath requirement it is very high, general camera lens can not meet
It is required that.
The content of the invention
The present invention is directed to deficiencies of the prior art, proposes a kind of standard interchangeable tight shot, Neng Gouman
The 8k resolution cameras of foot matching silent frame and super35 pictures, 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 the first eyeglass group and the second eyeglass group set gradually from the object side to image side, wherein：First eyeglass
Group includes the first eyeglass with negative power, the second eyeglass with negative power and the 3rd eyeglass with positive light coke；
Second eyeglass group include 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 arranged between the 6th eyeglass and the 7th eyeglass；When shooting object is from infinity to when closely changing, the
One eyeglass group is fixed, and the second eyeglass group moves from image side to thing side and focused, and Ji Hou groups, which float, focuses.
The first eyeglass to the 3rd eyeglass in the first described eyeglass group is lens, that is, be simple lens or simple lens and
The combination of cemented doublet, spherical aberration and aberration during so as to optimize nearly object distance so that as matter is stable during focusing.
Technique 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 adds Glass aspheric mirror in camera lens
Piece, resolving power and resolution ratio are obviously improved, have enabled 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.
When aperture standard-sized sheet, periphery is bright than also more than 35%, making to present on picture by the light of whole camera lens
Evenly, Correct exposure during film shooting is advantageous to.
3) to solve the problems, such as that it is big that existing camera lens distort, present invention optimizes the structure of camera lens and light path, especially
Strengthen the symmetry of camera lens rear end group so that distortion is minimum, and TV distorts below 1%, ensure that picture from center to most
Periphery is also not in deformation and distortion.
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 is from infinity to when closely changing, pre-group is fixed, and rear group moves from image space to object space to be gathered
It is burnt.And especially optimize diaphragm with the distance of front and rear eyeglass 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.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment 1；
Fig. 2 is spherical aberration, the curvature of field, distortion figure of the camera lens of embodiment 1 relative to d lines；
Fig. 3 is coma figure of the camera lens of embodiment 1 relative to d lines；
Fig. 4 is the structural representation of embodiment 2；
Fig. 5 is spherical aberration, the curvature of field, distortion figure of the camera lens of embodiment 2 relative to d lines；
Fig. 6 is coma figure of the camera lens of embodiment 2 relative to d lines；
In figure：First eyeglass group G1, diaphragm S, the second eyeglass group G2, the first eyeglass L1, the second eyeglass L2, the 3rd eyeglass
L3, the 4th eyeglass L4, the 5th eyeglass L5, the 6th eyeglass L6, the 7th eyeglass L7, the 8th eyeglass L8, the 9th eyeglass L9, image planes IMG.
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, the 3rd eyeglass L3 with positive light coke, the 4th eyeglass with positive light coke with negative power
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
From infinity to when closely changing, the first eyeglass group G1 is fixed, and the second eyeglass group G2 moves progress from image side to thing side
Focusing, Ji Hou groups, which float, focuses.
The curvature ratio of eyeglass before and after described diaphragm, i.e. the 6th eyeglass L6 and cemented doublet L7 meets (0.9,1.1) so that
Camera lens object distance is from infinitely during closely change, the change of the angle of visual field of camera lens is small.If less than the lower limit of the conditional,
Can then cause the bore of eyeglass in front of diaphragm excessive, and then cause lens aperture diameter and entire outer diameter increase, cost significantly on
Rise；If higher than the lower limit of the conditional, camera lens object distance can be caused from infinitely during closely change, camera lens regards
Rink corner change is excessive, and cell breath is obvious, and the shooting for being unfavorable for film uses.
The whole focal length of described standard interchangeable tight shot and the ratio of optic back focal meet (1.5,3.5), make
The focal length of camera lens and the ratio of rear Jiao are obtained in a suitable scope.If less than the upper limit of the conditional, camera lens can be caused
It is burnt long afterwards so that the second eyeglass group G2 needs that there is higher focal power to go to adjust the spherical aberration caused by focusing and periphery
The variation of coma and aberration, causes optical property drastically to deteriorate, and does not reach 8k resolution ratio；If higher than under the conditional
Limit, then can cause rear Jiao of camera lens too short so that camera lens is not suitable for film camera on the market, and practicality is deteriorated.
The ratio of the focal length of the second described eyeglass group G2 and the whole focal length of standard interchangeable tight shot meet (1,
2), if less than the conditional lower limit, camera lens the second eyeglass group's G2 optical power profiles can be caused excessive, and then cause the first mirror
Piece group's G1 focal powers are too low so that the first eyeglass group G1 eyeglass bore increase, overall weight increase, be unfavorable for camera lens and performing
Because the focus process that object distance changes；If higher than the upper limit of the conditional, camera lens the second eyeglass group's G2 light focuss are 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 assembling and overall weight and the center of gravity of camera lens
Adjustment.Also it is difficult to correction in addition because the change of spherical aberration and periphery aberration and coma caused by focusing.
The refractive index of the 9th described eyeglass L9 meets (1.65,1.85), if less 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 be difficult to compensate for the first eyeglass group G1 and formed
Spherical aberration；If higher than the upper limit of the conditional, the spherical aberration correction that the first eyeglass group G1 can be caused to be formed is excessive, makes
Lens performance reduces.Eyeglass price is too high simultaneously.
The 4th eyeglass in the second described eyeglass group G2 at least one into the 9th eyeglass is non-spherical lens, so as to aobvious
Lifting resolving power is write, up to the video camera of 6k or 8k resolution ratio uses at present to match.Mirror can be made using aspherical in addition
The volume and weight of head is remarkably decreased, and realizes miniaturization.
The first eyeglass to the 3rd eyeglass in the first described eyeglass group G1 is lens, that is, is simple lens or simple lens
With the combination of cemented doublet, spherical aberration and aberration during so as to optimize nearly object distance so that as matter is stable 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.
The lens construction parameter of table 1
| Surface sequence number | Surface type | Radius of curvature | Thickness | Refractive index | Abbe number |
| Object plane | Z0 | ||||
| S1 | Sphere | -352.33 | 4.24 | 1.74 | 44.7 |
| S2 | Sphere | 152.40 | 6.91 | ||
| S3 | Sphere | 187.79 | 4.83 | 1.78 | 25.6 |
| S4 | Sphere | 61.11 | 9.22 | ||
| S5 | Sphere | 79.94 | 12.48 | 1.83 | 43.2 |
| S6 | Sphere | -168.31 | Z1 | ||
| S7 | Sphere | 53.23 | 8.19 | 1.83 | 43.2 |
| S8 | Sphere | 190.16 | 0.32 | ||
| S9 | Sphere | 36.09 | 7.11 | 1.75 | 27.5 |
| S10 | Sphere | 44.28 | 3.66 | ||
| S11 | Sphere | 87.58 | 2.42 | 1.76 | 26.6 |
| S12 | Sphere | 25.95 | 10.07 | ||
| Diaphragm | Sphere | INF | 9.44 | ||
| S14 | Sphere | -24.77 | 2.54 | 1.78 | 25.7 |
| S15 | Sphere | 56.03 | 10.13 | 1.72 | 54.6 |
| S16 | Sphere | -43.93 | 0.80 | ||
| S17 | Sphere | 194.20 | 5.54 | 1.83 | 43.2 |
| S18 | Sphere | -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
The angle of visual field, from D0 to D1 change when, FOV has only changed 1.4%, and cell breath is faint.
The asphericity coefficient of the 9th described eyeglass L9 is as shown in table 3.
The camera lens asphericity coefficient of table 3
Wherein：K is circular cone coefficient, and e is science count number, such as e-005 represents 10-5。
Embodiment 2
Compared with Example 1, the second eyeglass in the present embodiment and the 3rd lens set are into 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 such as institute of table 4 of each eyeglass
Show, imaging parameters are as shown in Figure 4 and Figure 5.
The lens construction parameter of table 4
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
The angle of visual field, from D0 to D1 change when, FOV has only changed 1.4%, and cell breath is faint.
The asphericity coefficient of the 9th described eyeglass L9 is as shown in table 3.
The camera lens asphericity coefficient of table 6
Wherein：K is circular cone coefficient, and e is science count number, such as e-005 represents 10-5。
Above-mentioned specific implementation can by those skilled in the art on the premise of without departing substantially from the principle of the invention and objective with difference
Mode local directed complete set is carried out to it, protection scope of the present invention is defined by claims and not by above-mentioned specific implementation institute
Limit, each implementation in the range of it is by the constraint of the present invention.
Claims (7)
- A kind of 1. standard interchangeable tight shot, it is characterised in that including：The first eyeglass set gradually from the object side to image side Group and the second eyeglass group, wherein：First eyeglass group includes the first eyeglass with negative power, the second mirror with negative power Piece and the 3rd eyeglass with positive light coke；Second eyeglass group includes the 4th eyeglass with positive light coke, with positive light coke The 5th, the 6th eyeglass, the cemented doublet with negative power with negative power, i.e. the 7th eyeglass, there is positive light focus 8th eyeglass of degree, the 9th eyeglass with positive light coke, diaphragm are arranged between the 6th eyeglass and the 7th eyeglass；Work as subject For body from infinity to when closely changing, the first eyeglass group is fixed, and the second eyeglass group moves from image side to thing side to be carried out pair Jiao, Ji Hou groups, which float, focuses；The 4th eyeglass in the second described eyeglass group at least one into the 9th eyeglass is non-spherical lens；The first eyeglass to the 3rd eyeglass in the first described eyeglass group is lens, that is, is simple lens or simple lens and gluing The combination of eyeglass.
- 2. standard interchangeable tight shot according to claim 1, it is characterized in that, eyeglass before and after described diaphragm, i.e., The curvature ratio of 6th eyeglass and cemented doublet meets (0.9,1.1).
- 3. standard interchangeable tight shot according to claim 1, it is characterized in that, described standard interchangeable focuses The whole focal length of camera lens and the ratio of optic back focal meet (1.5,3.5).
- 4. standard interchangeable tight shot according to claim 1, it is characterized in that, the focal length of the second described eyeglass group Meet (1,2) with the ratio of the whole focal length of standard interchangeable tight shot.
- 5. standard interchangeable tight shot according to claim 1, it is characterized in that, the refractive index of the 9th described eyeglass Meet (1.65,1.85).
- 6. standard interchangeable tight shot according to claim 1, it is characterized in that, the first mirror in the first eyeglass group Piece to the 3rd eyeglass is simple lens, then the first surface of the first eyeglass is sphere, and its radius of curvature is -352.33, its thickness For 4.24, its refractive index is 1.74, and its Abbe number is 44.7；The second surface of first eyeglass is sphere, and its radius of curvature is 152.4, its thickness is 6.91；The first surface of second eyeglass is sphere, and its radius of curvature is 187.79, and its thickness is 4.83, Its refractive index is 1.78, and its Abbe number is 25.6；The second surface of second eyeglass is sphere, and its radius of curvature is 61.11, and it is thick Spend for 9.22；The first surface of 3rd eyeglass is sphere, and its radius of curvature is 79.94, and its thickness is 12.48, and its refractive index is 1.83, its Abbe number is 43.2；The second surface of 3rd eyeglass is sphere, and its radius of curvature is -168.31, and its thickness is Z1； The first surface of 4th eyeglass is sphere, and its radius of curvature is 53.23, and its thickness is 8.19, and its refractive index is 1.83, its Abbe Number is 43.2；The second surface of 4th eyeglass is sphere, and its radius of curvature is 190.16, and its thickness is 0.32；5th eyeglass First surface is sphere, and its radius of curvature is 36.09, and its thickness is 7.11, and its refractive index is 1.75, and its Abbe number is 27.5； The second surface of 5th eyeglass is sphere, and its radius of curvature is 44.28, and its thickness is 3.66；The first surface of 6th eyeglass is Sphere, its radius of curvature are 87.58, and its thickness is 2.42, and its refractive index is 1.76, and its Abbe number is 26.6；6th eyeglass Second surface is sphere, and its radius of curvature is 25.95, and its thickness is 10.07；Diaphragm is sphere, and its thickness is 9.44；7th mirror The first surface of piece is sphere, and its radius of curvature is -24.77, and its thickness is 2.54, and its refractive index is 1.78, and its Abbe number is 25.7；The second surface of 7th eyeglass is sphere, and its radius of curvature is 56.03, and its thickness is 10.13, and its refractive index is 1.72, Its Abbe number is 54.6；3rd surface of the 7th eyeglass is sphere, and its radius of curvature is -43.93, and its thickness is 0.8；8th mirror The first surface of piece is sphere, and its radius of curvature is 194.2, and its thickness is 5.54, and its refractive index is 1.83, and its Abbe number is 43.2；The second surface of 8th eyeglass is sphere, and its radius of curvature is -90.99, and its thickness is 1.63；The first of 9th eyeglass Surface is aspherical, and its radius of curvature is 396.44, and its thickness is 7.96, and its refractive index is 1.8, and its Abbe number is 40.5；The The second surface of nine eyeglasses is aspherical, and its radius of curvature is -72.47, and its thickness is 39.21；The first surface of 9th eyeglass Circular cone coefficient be -60.546, the circular cone coefficient of second surface is 1.135；The quadravalence of the first surface of 9th eyeglass is aspherical Coefficient is 1.45E-07, and the quadravalence asphericity coefficient of second surface is 4.76E-04；Six ranks of the first surface of the 9th eyeglass are non- Asphere coefficient is -5.03E-06, and six rank asphericity coefficients of second surface are 6.23E-05；The eight of the first surface of 9th eyeglass Rank asphericity coefficient is 2.36E-05, and eight rank asphericity coefficients of second surface are -2.37E-07；The first surface of 9th eyeglass Ten rank asphericity coefficients be -4.12E-04, ten rank asphericity coefficients of second surface are -2.76E-09.
- 7. standard interchangeable tight shot according to claim 1, it is characterized in that, the second mirror in the first eyeglass group Into cemented doublet, the first eyeglass is simple lens for piece and the 3rd lens set, then the first surface of the first eyeglass is sphere, and its curvature is partly Footpath is -353.06, and its thickness is 4.94, and its refractive index is 1.64, and its Abbe number is 54.7；The second surface of first eyeglass is ball Face, its radius of curvature are 152.13, and its thickness is 9.63；The first surface of second eyeglass is sphere, and its radius of curvature is 187.67, its thickness is 4.91, and its refractive index is 1.68, and its Abbe number is 35.6；The second surface of second eyeglass is sphere, its Radius of curvature is 79.87, and its thickness is 12.46, and its refractive index is 1.83, and its Abbe number is 43.2；Second table of the 3rd eyeglass Face is sphere, and its radius of curvature is -168.19, and its thickness is 9.07；The first surface of 4th eyeglass is sphere, its radius of curvature For 53.59, its thickness is Z1, and its refractive index is 1.83, and its Abbe number is 43.2；The second surface of 4th eyeglass is sphere, its Radius of curvature is 190.96, and its thickness is 0.95；The first surface of 5th eyeglass is sphere, and its radius of curvature is 36.51, and it is thick Spend for 6.22, its refractive index is 1.75, and its Abbe number is 27.5；The second surface of 5th eyeglass is sphere, and its radius of curvature is 44.4, its thickness is 3.42；The first surface of 6th eyeglass is sphere, and its radius of curvature is 87.37, and its thickness is 2.38, its Refractive index is 1.76, and its Abbe number is 26.6；The second surface of 6th eyeglass is sphere, and its radius of curvature is 26.06, its thickness For 10.95；Diaphragm is sphere, and its thickness is 9.25；The first surface of 7th eyeglass is sphere, and its radius of curvature is -24.82, Its thickness is 2.11, and its refractive index is 1.78, and its Abbe number is 25.7；The second surface of 7th eyeglass is sphere, and its curvature is partly Footpath is 56.21, and its thickness is 10.1, and its refractive index is 1.72, and its Abbe number is 54.6；3rd surface of the 7th eyeglass is ball Face, its radius of curvature are -43.91, and its thickness is 1.07；The first surface of 8th eyeglass is sphere, and its radius of curvature is 194.08, its thickness is 5.73, and its refractive index is 1.83, and its Abbe number is 43.2；The second surface of 8th eyeglass is sphere, its Radius of curvature is -91.22, and its thickness is 1.42；The first surface of 9th eyeglass is aspherical, and its radius of curvature is 396.51, Its thickness is 7.58, and its refractive index is 1.8, and its Abbe number is 40.5；The second surface of 9th eyeglass is aspherical, its curvature half Footpath is -73.09, and its thickness is 38.88；The circular cone coefficient of the first surface of 9th eyeglass is -20.346, the circular cone of second surface Coefficient is 10.872；The quadravalence asphericity coefficient of the first surface of 9th eyeglass is 7.42E-07, the quadravalence aspheric of second surface Face coefficient is 7.35E-03；Six rank asphericity coefficients of the first surface of the 9th eyeglass are -4.38E-06, six ranks of second surface Asphericity coefficient is 2.23E-06；Eight rank asphericity coefficients of the first surface of the 9th eyeglass are 2.37E-05, second surface Eight rank asphericity coefficients are -4.52E-08；Ten rank asphericity coefficients of the first surface of the 9th eyeglass are -1.52E-09, second The ten rank asphericity coefficients on surface are -8.72E-09.
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| 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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Address after: 314000 No.188, Taojing Road, Gaozhao street, Xiuzhou District, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Zhongrun Optical Technology Co.,Ltd. Address before: 314000 Room 2F201-6, Building 6, Jiaxing Photovoltaic Science Park, 1288 Kanghe Road, Xiuzhou District, Jiaxing City, Zhejiang Province Patentee before: JIAXING ZHONGRUN OPTICAL SCIENCE AND TECHNOLOGY Co.,Ltd. |