CN107193113B - For shooting the overall movement focusing bugeye lens of spherical screen stereoscopic film - Google Patents
For shooting the overall movement focusing bugeye lens of spherical screen stereoscopic film Download PDFInfo
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- CN107193113B CN107193113B CN201710628689.6A CN201710628689A CN107193113B CN 107193113 B CN107193113 B CN 107193113B CN 201710628689 A CN201710628689 A CN 201710628689A CN 107193113 B CN107193113 B CN 107193113B
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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
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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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
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- Optics & Photonics (AREA)
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Abstract
A kind of overall movement focusing bugeye lens for shooting spherical screen stereoscopic film, it include: the first eyeglass set gradually from the object side to image side along optical axis, the second eyeglass, third eyeglass, the 4th eyeglass, the 5th eyeglass, the 6th eyeglass, diaphragm, the 7th eyeglass, the 8th eyeglass and the 9th eyeglass, wherein: the 5th eyeglass, the 8th eyeglass and the 9th eyeglass have positive light coke, other eyeglasses are negative power；When shooting, camera lens of the present invention is by the way of the mobile focusing of whole group camera lens；Third eyeglass, the 4th eyeglass, the 7th eyeglass of the 6th eyeglass and the 9th eyeglass are double cemented doublets；The present invention has rational design, practical, the spherical screen stereoscopic film shooting of the 8k video camera suitable for matching super35 picture.
Description
Technical field
It is specifically a kind of for shooting the entirety of spherical screen stereoscopic film the present invention relates to a kind of technology of optical imaging field
Mobile focusing bugeye lens.
Background technique
Spherical screen stereoscopic film, also known as " circle vault film " or " vault curtain film ", it is a kind of big screen electricity occurred the 1970s
Shadow.Shooting at present and projection are all made of ultra-wide angle fish eye lens, and auditorium is dome type structure, and screen is hemispherical, spectators' quilt
It surrounds wherein, depending on screen such as the firmament.Since screen image is big and clear, be extended down to from face of spectators behind, and with stereo
Ring sound, makes spectators such as put oneself in the midst of, and Presence is very strong.
Current spherical screen stereoscopic film almost all of on the market when shooting, is all made of the video camera of super 35mm picture.With
The development of film camera sensor technology, at present the resolution ratio of video camera can reach 6k even 8k.Therefore, super with video camera
The demand of the matched camera lens of high-resolution is with regard to more and more.And the camera lens of existing super35 picture is mostly that angle is more than
180 ° of the wide-angle lens of fish eye lens or angle less than 150 °, periphery color difference is larger, and periphery dispersion is serious in actual use；And
And distortion is larger, periphery is distorted clearly, is unable to satisfy shooting needs and the viewing requirement of spherical screen stereoscopic film.
The content of spherical screen stereoscopic film shooting is usually very grand scene, such as sky, ocean, it is therefore desirable to the angle of camera lens
It spends very big.When shooting, it generally requires to take helicopter shooting, if angle is too big, has reached 180 ° or more, that is shooting
When again be easy extra scene, such as propeller, the camera system of helicopter are beaten in, play the effect run counter to desire,
Also difficulty is increased to post-production.In addition, the screen of spherical screen stereoscopic film is very big, therefore also have very to the properties of camera lens
High requirement, such as color difference, distortion.
Summary of the invention
The present invention In view of the above shortcomings of the prior art, proposes a kind of for shooting the overall movement tune of spherical screen stereoscopic film
Burnt bugeye lens is made the field angle of camera lens reach 160 °~165 °, is met using five single eyeglasses and four double cemented doublets
The spherical screen stereoscopic film of super35 picture shoots demand.
The present invention is achieved by the following technical solutions:
The present invention include: the first eyeglass set gradually from the object side to image side along optical axis, the second eyeglass, third eyeglass,
4th eyeglass, the 5th eyeglass, the 6th eyeglass, diaphragm, the 7th eyeglass, the 8th eyeglass and the 9th eyeglass, in which: the 5th eyeglass,
Eight eyeglasses and the 9th eyeglass have positive light coke, other eyeglasses are negative power；When shooting, camera lens of the present invention uses whole group camera lens
The mode of mobile focusing.
Third eyeglass, the 4th eyeglass, the 6th eyeglass, the 7th eyeglass and the 9th eyeglass is double cemented doublets.
Refractive index N of first eyeglass relative to d line (λ=587.5620nm)D1>1.85。
The focal length of first eyeglass and the second eyeglass meets: 0.8 < FG1/FG2< 1.5, in which: FG1For the first eyeglass
Focal length, FG2For the focal length of the second eyeglass.
The optic back focal and whole focal length for the camera lens that nine eyeglasses and diaphragm are constituted meet: 5.0 < BFL/EFL <
9.0, in which: BFL is optic back focal, and EFL is whole focal length.
Technical effect
Compared with prior art, the field angle of the present embodiment of the present invention is 160 °~165 °, and dispersion and distortion are had excellent performance.
The present invention by the material selection of special eyeglass collocation and abnormal dispersing characteristic so that the Dispersion managed on center and periphery obtain and
Its is small.Even if the ratio chromatism, on periphery also controls within a pixel, spectators can be made to see completely not in viewing
Dispersion out improves viewing experience.The present invention is designed by reasonable structure and the use of Glass aspheric eyeglass, so that distortion
Value is just coincide with the curvature of the screen of ball curtain, to completely eliminate the influence of distortion.In addition, resolving power pole of the invention
Height, the 8K video camera that can match current super35mm picture state-of-the-art on the market use.
Detailed description of the invention
Fig. 1 is optical texture schematic diagram of the present invention；
In figure: the first eyeglass of G1, the second eyeglass of G2, G3 third eyeglass, the 4th eyeglass of G4, the 6th eyeglass of G5, the 7th mirror of G7
Piece, the 8th eyeglass of G8, the 9th eyeglass of G9, S1~S15, the surface of each eyeglass of S17~S24, S diaphragm；The of the first eyeglass of S1, S2
First mirror of one mirror surface and the second mirror surface, the first mirror surface of the second eyeglass of S3, S4 and the second mirror surface, S5, S6, S7 third eyeglass
Face, the second mirror surface and intermediate mirror surface, the first mirror surface of the 4th eyeglass of S8, S9, S10, the second mirror surface and intermediate mirror surface, S11, S12
The first mirror surface, the second mirror surface and the intermediate mirror of the first mirror surface and the second mirror surface of 5th eyeglass, the 6th eyeglass of S13, S14, S15
Face, the first mirror surface of the 7th eyeglass of S17, S18, S19, the second mirror surface and intermediate mirror surface, the 8th eyeglass of S20, S21 the first mirror surface
With the second mirror surface, the first mirror surface of the 9th eyeglass of S22, S23, S24, the second mirror surface and intermediate mirror surface；
Fig. 2 is aberration diagram of the embodiment relative to d line (λ=587.5620nm)；
In figure: (a) being spherical aberration, (b) be astigmatism curvature of field line, (c) be distortion aberration；
Fig. 3 is coma figure of the embodiment relative to d line (λ=587.5620nm)；
In figure: tangential is tangent line, and field height is visual field, and sagittal is radial line, ray
Aberrations is ray aberration.
Specific embodiment
As shown in Figure 1, the present embodiment includes: the first eyeglass G1 set gradually from the object side to image side along optical axis, second
Eyeglass G2, third eyeglass G3, the 4th eyeglass G4, the 5th eyeglass G5, the 6th eyeglass G6, diaphragm S, the 7th eyeglass G7, the 8th eyeglass
G8 and the 9th eyeglass G9, in which: the 5th eyeglass G5, the 8th eyeglass G8 and the 9th eyeglass G9 have positive light coke, other eyeglasses are
Negative power.
Third eyeglass, the 4th eyeglass, the 7th eyeglass of the 6th eyeglass and the 9th eyeglass is double cemented doublets.
Refractive index N of first eyeglass relative to d line (λ=587.5620nm)D1>1.85。
The focal length of first eyeglass and the second eyeglass meets: 0.8 < FG1/FG2< 1.5, in which: FG1For the first eyeglass
Focal length, FG2For the focal length of the second eyeglass.
The optic back focal and whole focal length for the camera lens that nine eyeglasses and diaphragm are constituted meet: 5.0 < BFL/EFL <
9.0, in which: BFL is optic back focal, and EFL is whole focal length.
The EFL=5.65 of the present embodiment, FNO (focal length/entrance pupil aperture)=3.60, DFOV (field angle)=165 °, each mirror
The structural parameters of piece and diaphragm are as shown in table 1.
1 lens construction parameter of table
Wherein: the surface of serial number S11, S12 and S19 be it is aspherical, corresponding asphericity coefficient is as shown in table 2.
2 camera lens asphericity coefficient of table
| S11 | S12 | S19 | |||
| K | 0 | K | 0 | K | 0 |
| A(4th) | 2.76e-005 | A(4th) | 3.96e-05 | A(4th) | 3.655e-02 |
| B(6th) | 1.03e-007 | B(6th) | 4.150e-07 | B(6th) | 2.076e-02 |
| C(8th) | 1.804e-01 | C(8th) | -1.825e-10 | C(8th) | 8.505e-02 |
| D(10th) | 1.143e-01 | D(10th) | -5.156e-8 | D(10th) | 5.213e-03 |
Wherein: K is circular cone coefficient conic, and A, B, C and D are respectively high order aspheric surface coefficient.
As shown in Fig. 2 (b), ANGLE (deg) indicates field angle,
The wide-angle of the present embodiment is 160 °~165 °, and dispersion and distortion are had excellent performance, and can match super35 picture, 8k point
Resolution video camera is shot for spherical screen stereoscopic film.
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 (2)
- The bugeye lens 1. a kind of overall movement for shooting spherical screen stereoscopic film is focused characterized by comprising from object side to picture The first eyeglass that lateral edge optical axis is set gradually, the second eyeglass, third eyeglass, the 4th eyeglass, the 5th eyeglass, the 6th eyeglass, light Door screen, the 7th eyeglass, the 8th eyeglass and the 9th eyeglass, in which: third eyeglass, the 4th eyeglass, the 6th eyeglass, the 7th eyeglass and the 9th Eyeglass is double cemented doublets；First mirror surface of first eyeglass is spherical surface, radius of curvature 41.43, the first eyeglass with a thickness of 2.1mm, refraction Rate is 1.99, Abbe number 29.1；Second mirror surface of the first eyeglass is spherical surface, radius of curvature 18.27, the of the second mirror surface to the second eyeglass of the first eyeglass One mirror surface with a thickness of 8.36mm；First mirror surface of the second eyeglass be spherical surface, radius of curvature 47.62, the second eyeglass with a thickness of 1.22mm, refractive index is 1.73, Abbe number 55.5；Second mirror surface of the second eyeglass is spherical surface, radius of curvature 12.6, the of the second mirror surface of the second eyeglass to third eyeglass One mirror surface with a thickness of 18.31mm；First mirror surface of third eyeglass is spherical surface, radius of curvature 100.63, the first mirror surface of third eyeglass to in-between mirror surface With a thickness of 4.66mm, refractive index 1.67, Abbe number 32.1；The intermediate mirror surface of third eyeglass is spherical surface, radius of curvature 15.47, the intermediate mirror surface of third eyeglass to its second mirror surface With a thickness of 1.03mm；Second mirror surface of third eyeglass is spherical surface, and radius of curvature is -9.87, the of the second mirror surface to the 4th eyeglass of third eyeglass One mirror surface with a thickness of 0.19mm, refractive index 1.73, Abbe number 55.5；First mirror surface of the 4th eyeglass is spherical surface, radius of curvature 16.65, the first mirror surface of the 4th eyeglass to in-between mirror surface With a thickness of 5.03mm, refractive index 1.69, Abbe number 30.1；The intermediate mirror surface of 4th eyeglass is spherical surface, radius of curvature 21.31, the intermediate mirror surface of the 4th eyeglass to its second mirror surface With a thickness of 0.96mm；Second mirror surface of the 4th eyeglass is spherical surface, and radius of curvature is -9.47, the of the second mirror surface to the 5th eyeglass of the 4th eyeglass One mirror surface with a thickness of 0.76mm, refractive index 1.93, Abbe number 20.9；First mirror surface of the 5th eyeglass be aspherical, radius of curvature 37.47, the 5th eyeglass with a thickness of 3.48mm, refractive index It is 1.69, Abbe number 31.1；Second mirror surface of the 5th eyeglass be it is aspherical, radius of curvature be -11.75, the second mirror surface to the 6th eyeglass of the 5th eyeglass The first mirror surface with a thickness of 0.11mm；First mirror surface of the 6th eyeglass is spherical surface, radius of curvature 30.3, the first mirror surface of the 6th eyeglass to in-between mirror surface With a thickness of 2.68mm, refractive index 1.67, Abbe number 32.2；The intermediate mirror surface of 6th eyeglass is spherical surface, radius of curvature 12.65, the intermediate mirror surface of the 6th eyeglass to its second mirror surface With a thickness of 0.97mm；Second mirror surface of the 6th eyeglass is spherical surface, and radius of curvature is -9.98, the thickness of the second mirror surface of the 6th eyeglass to diaphragm face For 3.09mm, refractive index 1.73, Abbe number 55.5；Diaphragm is plane, the first mirror surface of stop plane to the 7th eyeglass with a thickness of 10.71mm；First mirror surface of the 7th eyeglass is spherical surface, radius of curvature 33.67, the first mirror surface of the 7th eyeglass to in-between mirror surface With a thickness of 3.61mm, refractive index 1.93, Abbe number 20.9；The intermediate mirror surface of 7th eyeglass is aspherical, radius of curvature 31.88, the intermediate mirror surface of the 7th eyeglass to its second mirror surface With a thickness of 2.51mm；Second mirror surface of the 7th eyeglass is spherical surface, and radius of curvature is -11.16, the second mirror surface to the 8th eyeglass of the 7th eyeglass First mirror surface with a thickness of 2.33mm, refractive index 2, Abbe number 25.5；First mirror surface of the 8th eyeglass be spherical surface, radius of curvature 18.67, the 8th eyeglass with a thickness of 4.46mm, refractive index is 1.5, Abbe number 70.3；Second mirror surface of the 8th eyeglass is spherical surface, and radius of curvature is -17.03, the second mirror surface to the 9th eyeglass of the 8th eyeglass First mirror surface with a thickness of 0.11mm；First mirror surface of the 9th eyeglass is spherical surface, radius of curvature 32.29, the first mirror surface of the 9th eyeglass to in-between mirror surface With a thickness of 1.03mm, refractive index 2, Abbe number 25.5；The intermediate mirror surface of 9th eyeglass is spherical surface, and radius of curvature is -26.81, the intermediate mirror surface of the 9th eyeglass to its second mirror surface With a thickness of 4.81mm；Second mirror surface of the 9th eyeglass is spherical surface, radius of curvature 13.06, the second mirror surface of the 9th eyeglass to image planes with a thickness of 38.54mm, refractive index 1.49, Abbe number 83.6.
- The bugeye lens 2. overall movement according to claim 1 is focused, characterized in that the first of the 5th eyeglass The circular cone coefficient of mirror surface is 0, and high order aspheric surface coefficient is respectively as follows: A (4th)=2.76e-005；B (6th)=1.03e-007；C (8th)=1.804e-01；D (10th)=1.143e-01；The circular cone coefficient of second mirror surface of the 5th eyeglass is 0, and high order aspheric surface coefficient is respectively as follows: A (4th)=3.96e-05；B (6th)=4.150e-07；C (8th)=- 1.825e-10；D (10th)=- 5.156e-8；The circular cone coefficient of second mirror surface of the 7th eyeglass is 0, and high order aspheric surface coefficient is respectively as follows: A (4th)=3.655e-02；B (6th)=2.076e-02；C (8th)=8.505e-02；D (10th)=5.213e-03.
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| CN107807440B (en) * | 2017-11-14 | 2020-04-14 | 嘉兴中润光学科技有限公司 | Wide-angle interchangeable lens |
| CN107797261B (en) * | 2017-11-20 | 2019-08-23 | 嘉兴中润光学科技有限公司 | Dynamic Photography camera lens |
| CN107807439B (en) * | 2017-11-24 | 2019-03-08 | 嘉兴中润光学科技有限公司 | Interchangeable of dolly-out,ing dolly-back tight shot |
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| JP3442744B2 (en) * | 2001-02-14 | 2003-09-02 | 三菱電機株式会社 | Wide-angle projection lens and projection display device |
| JP2003043350A (en) * | 2001-07-30 | 2003-02-13 | Pentax Corp | Wide-angle lens system |
| JP5326594B2 (en) * | 2009-01-21 | 2013-10-30 | カシオ計算機株式会社 | Zoom lens and projector apparatus using the same |
| WO2014141349A1 (en) * | 2013-03-15 | 2014-09-18 | 富士フイルム株式会社 | Wide-angle lens and imaging device |
| CN104076490B (en) * | 2014-06-28 | 2017-04-26 | 青岛歌尔声学科技有限公司 | Wide-angle distortion-removing dual-band confocal optical lens |
| CN207067514U (en) * | 2017-07-28 | 2018-03-02 | 嘉兴中润光学科技有限公司 | Focusing bugeye lens is moved integrally for shoot spherical screen stereoscopic film |
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