CN106094186A - A kind of long-focus coaxial optical system of total reflection of ultrashort tube length - Google Patents
A kind of long-focus coaxial optical system of total reflection of ultrashort tube length Download PDFInfo
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- CN106094186A CN106094186A CN201610674502.1A CN201610674502A CN106094186A CN 106094186 A CN106094186 A CN 106094186A CN 201610674502 A CN201610674502 A CN 201610674502A CN 106094186 A CN106094186 A CN 106094186A
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- reflecting mirror
- optical system
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- reflecting
- ultrashort
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/02—Catoptric systems, e.g. image erecting and reversing system
- G02B17/06—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror
- G02B17/0626—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror using three curved mirrors
- G02B17/0642—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror using three curved mirrors off-axis or unobscured systems in which not all of the mirrors share a common axis of rotational symmetry, e.g. at least one of the mirrors is warped, tilted or decentered with respect to the other elements
Abstract
A kind of long-focus coaxial optical system of total reflection of ultrashort tube length, belongs to optical design arts, and big in order to solve the volume of long-focus space camera, baroque problem, this optical system is made up of the first reflecting mirror, the second reflecting mirror, the 3rd reflecting mirror and focal plane；This optical system is coaxial system, and whole system is rotationally symmetrical relative to optical axis；Infinity, thing side light is on the first reflecting mirror, the second reflecting mirror is reflexed to through the first reflecting mirror, after the second reflecting mirror reflection, converge at the first image planes again to be again incident on the 3rd reflecting mirror, reflex on the second reflecting mirror through the 3rd reflecting mirror, after the second reflecting mirror reflects again, final light collection is in focal plane；The reflecting surface of described first reflecting mirror is the recessed high order aspheric surface with secondary, four times, six times, eight times asphericity coefficients；The reflecting surface of the second reflecting mirror is convex hyperboloid, and the reflecting surface of the 3rd reflecting mirror is to have secondary, four times, the recessed ellipsoid of six times；Space remote sensing field can be widely used in.
Description
Technical field
The invention belongs to optical design arts, relate to a kind of being effectively compressed setting of coaxial long-focus remote sensing optical system tube length
Meter, is a kind of long-focus optical system of total reflection, can be widely used in space remote sensing field.
Background technology
Along with improving constantly of space observation and earth observation demand, space remote sensing optical system is increasingly towards focal length not
Disconnected elongated direction is developed, and the focal length of main flow commercial satellite load has evolved to 8～10 meters or higher rank now, such as
The main load focal length of main load focal length 10m, world view 2 of Komp SAT main load focal length 8.6m, IKONOS reaches 13m.
The focal length problem that increasingly length causes is that the volume of optical system is increasing, but by launching volume and matter quantitative limitation,
The volume seeking load itself wants miniaturization.
The catadioptric hybrid system of the many employings of space remote sensing optical system or full reflected system, but because catadioptric hybrid system without
Method thoroughly eliminates the aberration that long-focus introduces, so mostly using full reflected system.Full reflected system be divided into coaxial system and from
Axle system two class, off-axis system is for realizing without blocking, and it is huge that usual system bulk compares coaxial system, and coaxial system can lead to
Cross the means such as light path folding to be compressed by volume, to realize functional density maximization.
China Patent Publication No. is CN102313974A, and patent name is " ultra-short-range total reflection optical system ", this invention
In discuss a kind of optical design realizing 15 meters of focal lengths with optical tube length 1.5 meters, primary and secondary mirror is the high-resolution of sphere, little
Short distance two mirror four reflective optical system of volume wide spectrum, reflection light beam twice reflection through primary and secondary mirror respectively, protecting
On the premise of card image quality, reduce system tube length, but, system that employs off-axis form, add the longitudinal direction of system
Size.It addition, this system tube length focal distance ratio is 0.1.
Summary of the invention
The present invention is to solve the bulky problem of long-focus space camera, it is provided that a kind of ultrashort tube length of long-focus is coaxial
Optical system of total reflection.
Technical scheme is specific as follows:
A kind of long-focus coaxial optical system of total reflection of ultrashort tube length, is characterized in that, this optical system by the first reflecting mirror,
Second reflecting mirror, the 3rd reflecting mirror and focal plane composition；
This optical system is coaxial system, and whole system is rotationally symmetrical relative to optical axis；Infinity, thing side light arrives
On first reflecting mirror, reflex to the second reflecting mirror through the first reflecting mirror, then converge at the first image planes after the second reflecting mirror reflection
It is again incident on the 3rd reflecting mirror, reflexes on the second reflecting mirror through the 3rd reflecting mirror, after the second reflecting mirror reflects, finally again
Light collection is in focal plane.
The reflecting surface of described first reflecting mirror be have secondary, four times, six times, eight times asphericity coefficients recessed high order non-
Sphere.
The reflecting surface of the second reflecting mirror is convex hyperboloid,
The reflecting surface of the 3rd reflecting mirror is to have secondary, four times, the recessed ellipsoid of six times.
The aperture diaphragm of this optical system is arranged on the first reflecting mirror, and the first reflecting mirror is also the entrance pupil of system.
The optical parametric of this optical system is: image space focal length 1000mm, entrance pupil bore 1400mm, and image space F number is 7.177,
Spectral region 500nm～800nm, 1.1 ° of full filed angle.
The positive effect of the present invention:
The optical system of total reflection relative to identical index of the present invention, shortens optical tube length, reduces volume, tube length
Focal distance ratio is 0.065.First reflecting mirror and the 3rd quasi-Integrated design of reflecting mirror cobasis, can use integration processing mode, reduce
The complexity of multiple back of reflecting mirror supporting constructions, reduces the complexity of the process of debuging simultaneously, greatly reduces and add
Work and the difficulty debug；Second reflecting mirror has twice smooth line reflection, on the premise of not increasing reflecting mirror number, serves light path
The effect folded.
Accompanying drawing explanation
Fig. 1 is the ultrashort tube length of one long-focus of the present invention coaxial optical system of total reflection structural representation.
In figure: 1, the first reflecting mirror；2, the second reflecting mirror；3, the 3rd reflecting mirror；4, focal plane；5, the first image planes.
Fig. 2 is transmission function (MTF) curve of a kind of long-focus of the present invention coaxial optical system of total reflection of ultrashort tube length.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further details.
As it is shown in figure 1, the optical system in the present invention is by the first reflecting mirror the 1, second reflecting mirror the 2, the 3rd reflecting mirror 3 and Jiao
Plane 4 forms.The aperture diaphragm of this optical system is arranged on the first reflecting mirror 1, and the first reflecting mirror 1 is also the entrance pupil of system.
First reflecting mirror 1 is overall diameter 1420mm, the Perimeter Truss Reflector of interior diameter 560mm；3rd reflecting mirror 3 is overall diameter 560mm, interior
The Perimeter Truss Reflector of diameter 230mm；First reflecting mirror 1 uses integrated mirror base to process with the 3rd reflecting mirror 3；Second reflecting mirror 2
Circular reflector for diameter 310mm.The reflecting surface of three reflecting mirrors in system is aspheric surface, wherein the first reflecting mirror 1
Reflecting surface be the recessed high order aspheric surface with secondary, four times, six times and eight times asphericity coefficients, the second reflecting mirror 2 anti-
The face of penetrating is convex hyperboloid, and the reflecting surface of the 3rd reflecting mirror 3 is to have secondary, four times, the recessed ellipsoid of six times.
This optical system is coaxial system, and whole system is rotationally symmetrical relative to optical axis.Infinity, thing side light is along optical axis
Direction is the most incident, first incides the first reflecting mirror 1, reflexes to the second reflecting mirror 2 through the first reflecting mirror 1, then through
Two-mirror 2 reflects, and converges at the first image planes 5, and then light continues to propagate to the right, incides on the 3rd reflecting mirror 3, through the 3rd
Reflecting mirror 3 reflects, and is re-reflected on the second reflecting mirror 2, and after the second reflecting mirror 2 reflects again, final light collection is in focal plane
4。
The major parameter of optical system is as follows: image space focal length 1000mm, entrance pupil bore 1420mm, image space F#7.14, spectrum
Scope 500nm～800nm, 1.1 ° of full filed angle.
As in figure 2 it is shown, curve is it will be seen that the transfer curve of each visual field all presses close to diffracted ray (TS DIFF from figure
LIMIT), illustrating that the aberration correction of each visual field is good, image quality is good.
Design of Optical System specific design parameter is as shown in table 1.
Table 1
Claims (6)
1. the coaxial optical system of total reflection of the ultrashort tube length of long-focus, is characterized in that, this optical system is by the first reflecting mirror
(1), the second reflecting mirror (2), the 3rd reflecting mirror (3) and focal plane (4) composition；
This optical system is coaxial system, and whole system is rotationally symmetrical relative to optical axis；Infinity, thing side light is to first
On reflecting mirror (1), reflex to the second reflecting mirror (2) through the first reflecting mirror (1), then converge at after the second reflecting mirror (2) reflects
First image planes (5) are again incident on the 3rd reflecting mirror (3), reflex on the second reflecting mirror (2) through the 3rd reflecting mirror (3), through
After two-mirror (2) reflects again, final light collection is in focal plane (4).
A kind of long-focus coaxial optical system of total reflection of ultrashort tube length the most according to claim 1, is characterized in that, described the
The reflecting surface of one reflecting mirror (1) is the recessed high order aspheric surface with secondary, four times, six times, eight times asphericity coefficients.
A kind of long-focus coaxial optical system of total reflection of ultrashort tube length the most according to claim 1, is characterized in that, second is anti-
The reflecting surface penetrating mirror (2) is convex hyperboloid.
A kind of long-focus coaxial optical system of total reflection of ultrashort tube length the most according to claim 1, is characterized in that, the 3rd is anti-
The reflecting surface penetrating mirror (3) is to have secondary, four times, the recessed ellipsoid of six times.
A kind of long-focus coaxial optical system of total reflection of ultrashort tube length the most according to claim 1, is characterized in that, this optics
The aperture diaphragm of system is arranged on the first reflecting mirror (1), and the first reflecting mirror (1) is also the entrance pupil of system.
A kind of long-focus coaxial optical system of total reflection of ultrashort tube length the most according to claim 1, is characterized in that, this optics
The optical parametric of system is: image space focal length 1000mm, entrance pupil bore 1400mm, and image space F number is 7.177, spectral region 500nm～
800nm, 1.1 ° of full filed angle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610674502.1A CN106094186A (en) | 2016-08-16 | 2016-08-16 | A kind of long-focus coaxial optical system of total reflection of ultrashort tube length |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610674502.1A CN106094186A (en) | 2016-08-16 | 2016-08-16 | A kind of long-focus coaxial optical system of total reflection of ultrashort tube length |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188851A (en) * | 2018-09-19 | 2019-01-11 | 白荣超 | The spaceborne imaging system of large format |
| CN109387932A (en) * | 2018-11-22 | 2019-02-26 | 长春奥普光电技术股份有限公司 | A kind of optical system of total reflection and space remote sensing optical device |
| CN109788180A (en) * | 2019-02-28 | 2019-05-21 | 深圳市共进电子股份有限公司 | A kind of filming apparatus and detection device |
| CN109870792A (en) * | 2017-12-01 | 2019-06-11 | 中国人民解放军国防科技大学 | Coaxial all-trans optical imaging system |
| CN109946043A (en) * | 2019-03-11 | 2019-06-28 | 中国科学院上海技术物理研究所 | A kind of convex hyperboloid detection optical system of super large of catadioptric lens combination correction |
| CN109946044A (en) * | 2019-03-11 | 2019-06-28 | 中国科学院上海技术物理研究所 | A kind of catadioptric lens group examines the optical system of super large caliber convex paraboloid reflecting mirror |
| CN111367067A (en) * | 2018-12-25 | 2020-07-03 | 中国科学院长春光学精密机械与物理研究所 | Total reflection type afocal optical system |
| CN111367066A (en) * | 2018-12-25 | 2020-07-03 | 中国科学院长春光学精密机械与物理研究所 | Coaxial four-reflection optical system |
| CN111866328A (en) * | 2019-04-30 | 2020-10-30 | 华为技术有限公司 | Camera module and mobile terminal |
| CN113031238A (en) * | 2021-04-14 | 2021-06-25 | 中国科学院长春光学精密机械与物理研究所 | Multi-mirror integrated large-view-field long-focus off-axis four-mirror optical system |
| CN113075788A (en) * | 2021-04-02 | 2021-07-06 | 中国科学院长春光学精密机械与物理研究所 | Multispectral multichannel common-caliber zooming imaging optical system |
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| DE19605033A1 (en) * | 1996-02-05 | 1997-08-07 | Frank Gallert | Mirror system for astronomical telescope |
| DE19727834A1 (en) * | 1997-06-24 | 1999-01-07 | Frank Gallert | Mirror system with four reflections, especially as telescope for astronomy or space applications |
| CN105278089A (en) * | 2015-11-13 | 2016-01-27 | 中国科学院光电技术研究所 | Coaxial three-mirror optical system |
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Patent Citations (3)
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| DE19605033A1 (en) * | 1996-02-05 | 1997-08-07 | Frank Gallert | Mirror system for astronomical telescope |
| DE19727834A1 (en) * | 1997-06-24 | 1999-01-07 | Frank Gallert | Mirror system with four reflections, especially as telescope for astronomy or space applications |
| CN105278089A (en) * | 2015-11-13 | 2016-01-27 | 中国科学院光电技术研究所 | Coaxial three-mirror optical system |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870792B (en) * | 2017-12-01 | 2021-05-07 | 中国人民解放军国防科技大学 | Coaxial all-trans optical imaging system |
| CN109870792A (en) * | 2017-12-01 | 2019-06-11 | 中国人民解放军国防科技大学 | Coaxial all-trans optical imaging system |
| CN109188851A (en) * | 2018-09-19 | 2019-01-11 | 白荣超 | The spaceborne imaging system of large format |
| CN109387932A (en) * | 2018-11-22 | 2019-02-26 | 长春奥普光电技术股份有限公司 | A kind of optical system of total reflection and space remote sensing optical device |
| CN111367067A (en) * | 2018-12-25 | 2020-07-03 | 中国科学院长春光学精密机械与物理研究所 | Total reflection type afocal optical system |
| CN111367066A (en) * | 2018-12-25 | 2020-07-03 | 中国科学院长春光学精密机械与物理研究所 | Coaxial four-reflection optical system |
| CN111367067B (en) * | 2018-12-25 | 2020-12-11 | 中国科学院长春光学精密机械与物理研究所 | Total reflection type afocal optical system |
| CN111367066B (en) * | 2018-12-25 | 2021-12-17 | 中国科学院长春光学精密机械与物理研究所 | Coaxial four-reflection optical system |
| CN109788180A (en) * | 2019-02-28 | 2019-05-21 | 深圳市共进电子股份有限公司 | A kind of filming apparatus and detection device |
| CN109788180B (en) * | 2019-02-28 | 2024-03-29 | 深圳市共进电子股份有限公司 | Shooting device and detection equipment |
| CN109946044A (en) * | 2019-03-11 | 2019-06-28 | 中国科学院上海技术物理研究所 | A kind of catadioptric lens group examines the optical system of super large caliber convex paraboloid reflecting mirror |
| CN109946043B (en) * | 2019-03-11 | 2024-03-22 | 中国科学院上海技术物理研究所 | Ultra-large convex hyperboloid inspection optical system for refractive and reflective lens combination correction |
| CN109946043A (en) * | 2019-03-11 | 2019-06-28 | 中国科学院上海技术物理研究所 | A kind of convex hyperboloid detection optical system of super large of catadioptric lens combination correction |
| CN109946044B (en) * | 2019-03-11 | 2024-03-26 | 中国科学院上海技术物理研究所 | Optical system for inspecting ultra-large caliber convex parabolic reflector by refractive and reflective lens group |
| CN111866328A (en) * | 2019-04-30 | 2020-10-30 | 华为技术有限公司 | Camera module and mobile terminal |
| CN111866328B (en) * | 2019-04-30 | 2022-05-06 | 华为技术有限公司 | Camera module and mobile terminal |
| CN113075788A (en) * | 2021-04-02 | 2021-07-06 | 中国科学院长春光学精密机械与物理研究所 | Multispectral multichannel common-caliber zooming imaging optical system |
| CN113031238A (en) * | 2021-04-14 | 2021-06-25 | 中国科学院长春光学精密机械与物理研究所 | Multi-mirror integrated large-view-field long-focus off-axis four-mirror optical system |
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Application publication date: 20161109 |