CN105511060A - Full sphere annular large visual field moon edge optical imaging object lens - Google Patents
Full sphere annular large visual field moon edge optical imaging object lens Download PDFInfo
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- CN105511060A CN105511060A CN201510968152.5A CN201510968152A CN105511060A CN 105511060 A CN105511060 A CN 105511060A CN 201510968152 A CN201510968152 A CN 201510968152A CN 105511060 A CN105511060 A CN 105511060A
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- negative selenodont
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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
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0012—Optical design, e.g. procedures, algorithms, optimisation routines
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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
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
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- Optics & Photonics (AREA)
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Abstract
A full sphere annular large visual field moon edge optical imaging object lens belongs to the technical field of optical design and solves the defects of high manufacture and detection cost of parts and the whole machine of an optical system in the prior art, and the uncertain work stability in the space environment. A first planar mirror combination, a second planar mirror combination, an imaging lens combination, a diaphragm, a piece of detector protection glass, and a detector are coaxially arranged according to a light incident sequence. The second planar mirror combination is arranged in front of the first planar mirror combination and arranged in parallel. The first planar mirror combination includes eight planar mirrors which are circumferentially uniformly distributed around a Z axis. The second planar mirror combination includes eight planar mirrors which are circumferentially uniformly distributed around the Z axis. The planar mirrors in the two planar mirror combinations are corresponding to each other. The optical system is insensitive to a circumlunar satellite orbital altitude. The full sphere annular large visual field moon edge optical imaging object lens has high resolution imaging, high imaging quality, and high pointing accuracy, can suit the high precision attitude location of an airship in a moon reflection spectrum region, and reduces the circumlunar flight satellite attitude location time.
Description
Technical field
The present invention relates to a kind of global face annular Large visual angle moon edge optical image-forming objective lens, belong to optical design techniques field.
Background technology
The satellite of around-the-moon flight needs pitching and the roll attitude of determining self in real time.The appearance of determining of the mode that tradition uses star sensor to combine with gyro needs the computing machine on ground and satellite to provide precise orbit information, and Satellite Attitude Determination precision is very large to the dependence of orbit determination accuracy, and it is longer that single determines the appearance time.Simultaneously, when star sensor on the moon nearly rail satellite is to moon imaging, optical system needs 100 ° ~ 150 ° visual fields could cover the whole moon, for single transmission-type imaging lens, ensure that less optical aberration, higher pointing accuracy get up all more difficult in design and post-production, need by aspheric lens structures, special lenses material etc., cause the manufacture of optical system part and complete machine, testing cost higher, under space environment, job stability is uncertain.
Summary of the invention
The present invention in order to solve the manufacture of prior art optical system part and complete machine, testing cost is higher, the uncertain defect of job stability under space environment, provides a kind of global face annular Large visual angle moon edge optical image-forming objective lens.
Face, whole world annular Large visual angle moon edge optical image-forming objective lens, the first plane mirror group 1, the second plane mirror group 2 coaxially arranged by light order, imaging lens group 3, diaphragm 4, detector cover glass 5 and detector 6, is characterized in that,
Second plane mirror group 2 is positioned at the front end of the first plane mirror group 1, and be arranged in parallel, first plane mirror group 1, it comprises around the equally distributed eight plate plane catoptrons of Z axis circumference, second plane mirror group 2, it comprises around the equally distributed eight plate plane catoptrons of Z axis circumference, the plane mirror one_to_one corresponding in two groups of plane mirror groups;
Imaging lens group 3, it comprises the negative selenodont lens 32 of the first negative selenodont lens 31, second, double concave type lens 33, the 3rd negative selenodont lens 34, first lenticular lens 35, second lenticular lens 36, the 4th negative selenodont lens 37, the 3rd lenticular lens 38 and the 4th negative selenodont lens 39 successively;
Incident ray is through each plane mirror front surface reflection of the first plane mirror group 1; and reflected by each plane mirror rear surface of the second plane mirror group 2; reflected light successively through the negative selenodont lens 32 of the first negative selenodont lens 31, second, double concave type lens 33, the 3rd negative selenodont lens 34, first lenticular lens 35, diaphragm 4, second lenticular lens 36, the 4th negative selenodont lens 37, the 3rd lenticular lens 38, the 4th negative selenodont lens 39, detector cover glass 5 transmission, is detected device 6 and receives again.
In described first plane mirror group 1, each center, plane mirror rear surface and optical axis are at a distance of 16.97mm, with the first negative selenodont lens 31 front surface distance 28mm, in second plane mirror group 2, each plane mirror front surface and optical axis are at a distance of 25.81mm, the plane mirror front surface level corresponding with plane mirror group is at a distance of 22.4mm, with its angle 22.5 °, the airspace of described first negative selenodont lens 31 rear surface and the second negative selenodont lens 32 front surface is 10.87mm, the airspace of described second negative selenodont lens 32 rear surface and double concave type lens 33 front surface is 9.04mm, the airspace of described double concave type lens 33 rear surface and the 3rd negative selenodont lens 34 front surface is 14.76mm, the airspace of described 3rd negative selenodont lens 34 rear surface and the first lenticular lens 35 front surface is 2.270mm, the airspace of described first lenticular lens 35 rear surface and stop plane is 33.35mm, the airspace of described middle stop plane and the second lenticular lens 36 front surface is 15.76mm, the airspace of described second lenticular lens 36 rear surface and the 4th negative selenodont lens 37 front surface is 0.5mm, the airspace of described 4th negative selenodont lens 37 rear surface and the 3rd lenticular lens 38 front surface is 1.98mm, the airspace of described 3rd lenticular lens 38 rear surface and the 4th negative selenodont lens 39 front surface is 2.30mm, the airspace of described 4th negative selenodont lens 39 rear surface and detector cover glass 5 front surface is 8.10mm, the airspace of described detector cover glass 5 rear surface and detector 6 is 1mm.
In imaging lens group 3, the focal length of each optical element, refractive index and radius-of-curvature meet the following conditions respectively:
The invention has the beneficial effects as follows:
1) by area of computer aided optical design and optimization, select the angle of two catoptrons and position to reduce rise and angle that incident ray incides lens, alleviate the aberration correction pressure of lens element preferably, choose reasonable original paper quantity and structure, ensure that and affect moon edge imaging optical system bearing direction precision, make the mtf value of camera lens when 36lp/mm close to diffraction limit, within the scope of full filed, be greater than 0.70.
2) 85% blur circle concentration of energy is within the scope of 13 μm ~ 14.4 μm, 85% blur circle concentration of energy is at 17 μm ~ 19.7 μm, encircled energy is high, all band self-energy barycenter deviation be less than 7 μm, hang down axle colo(u)r bias be less than 2.9 μm, LOS point precision is better than 2 ", ring moon satellite high-precision can be adapted to and determine the requirement of appearance.
3) be sphere with all optical elements of middle optical system and (comprise plane mirror, radius of curvature R ≈ ∞) face type element, reduce the difficulty that face type detects, and can realize debuging respectively, lens original paper is spherical surface type, coaxially puts, and is convenient to processing and debugs, described and lens material be general commercial glass, reduce optical system material purchases difficulty and manufacturing cost.
4) within the scope of service band full filed, relative distortion is about 0.12%, determines appearance adopt the method for transmission-type star sensor to have less relative distortion compared to tradition.
Obtain moon heart vector by this image-forming objective lens follow-up moon edge imaging extraction algorithm, thus obtain pitching and the roll attitude of around-the-moon flight satellite.This optical system is to the moon marginal annular region imaging of 120 ° ~ 150 °, this optical system opposing connection moon satellite orbital altitude is insensitive, there is the feature of high-resolution imaging, high imaging quality, high pointing accuracy, can adapt to airship moon reflected spectral range high-precision fixed appearance, reduce the around-the-moon flight satellite attitude time, when avoiding each Satellite Attitude Determination, ground orbit determination and On board computer carry out the complex work of precise orbit extrapolation, it also avoid traditional Large visual angle imaging system in the defect to the aspheric surface and special material etc. required for moon edge imaging simultaneously.
Accompanying drawing explanation
Fig. 1 is face, the present invention whole world annular Large visual angle moon edge optical image-forming objective lens structural representation.
Fig. 2 is the present invention's two plane mirror group structural representations.
Fig. 3 is imaging lens group structural representation of the present invention.
Fig. 4 is face, the present invention whole world annular Large visual angle moon edge optical image-forming objective lens optical system energy distribution curve.
Fig. 5 is face, the present invention whole world annular Large visual angle moon edge optical image-forming objective lens optical system chromatic longitudiinal aberration curve.
Fig. 6 is face, the present invention whole world annular Large visual angle moon edge optical image-forming objective lens optical system MTF curve.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details.
As shown in Figure 1; face, whole world annular Large visual angle moon edge optical image-forming objective lens; coaxially arrange by light order: the first plane mirror group 1, second plane mirror group 2, imaging lens group 3, diaphragm 4, detector cover glass 5 and detector 6, second plane mirror group 2 are positioned at the front end of the first plane mirror group 1.
As shown in Figure 2, first plane mirror group 1, it comprises around Z axis evenly circumferential the first plane mirror 11 distributed, second plane mirror 12, first plane mirror 13, second plane mirror 14, first plane mirror 15, second plane mirror 16, first plane mirror 17, second plane mirror 18.
Second plane mirror group 2, it comprises around equally distributed 9th plane mirror 21 of Z axis, tenth plane mirror 22,11 plane mirror 23,12 plane mirror 24, the 13 plane mirror 25, the 14 plane mirror 26,15 plane mirror 27, the 16 plane mirror 28.
As shown in Figure 3, imaging lens group 3, it comprises the negative selenodont lens 32 of the first negative selenodont lens 31, second, double concave type lens 33, the 3rd negative selenodont lens 34, first lenticular lens 35, second lenticular lens 36, the 4th negative selenodont lens 37, the 3rd lenticular lens 38 and the 4th negative selenodont lens 39 successively.
Incident ray is through each catoptron front surface reflection of the first plane mirror group 1; and reflected by each catoptron rear surface of the second plane mirror group 2; reflected light successively through the negative selenodont lens 32 of the first negative selenodont lens 31, second, double concave type lens 33, the 3rd negative selenodont lens 34, first lenticular lens 35, diaphragm 4, second lenticular lens 36, the 4th negative selenodont lens 37, the 3rd lenticular lens 38, the 4th negative selenodont lens 39 and detector cover glass 5 transmission, is finally detected device 6 and receives again.
In described first plane mirror group 1, each center, plane mirror rear surface and optical axis are at a distance of 16.97mm, with the first negative selenodont lens 31 front surface distance 28mm, in second plane mirror group 2, each plane mirror front surface and optical axis are at a distance of 25.81mm, the plane mirror front surface level corresponding with plane mirror group is at a distance of 22.4mm, with its angle 22.5 °, the airspace of described first negative selenodont lens 31 rear surface and the second negative selenodont lens 32 front surface is 10.87mm, the airspace of described second negative selenodont lens 32 rear surface and double concave type lens 33 front surface is 9.04mm, the airspace of described double concave type lens 33 rear surface and the 3rd negative selenodont lens 34 front surface is 14.76mm, the airspace of described 3rd negative selenodont lens 34 rear surface and the first lenticular lens 35 front surface is 2.270mm, the airspace of described first lenticular lens 35 rear surface and stop plane is 33.35mm, the airspace of described middle stop plane and the second lenticular lens 36 front surface is 15.76mm, the airspace of described second lenticular lens 36 rear surface and the 4th negative selenodont lens 37 front surface is 0.5mm, the airspace of described 4th negative selenodont lens 37 rear surface and the 3rd lenticular lens 38 front surface is 1.98mm, the airspace of described 3rd lenticular lens 38 rear surface and the 4th negative selenodont lens 39 front surface is 2.30mm, the airspace of described 4th negative selenodont lens 39 rear surface and detector cover glass 5 front surface is 8.10mm, the airspace of described detector cover glass 5 rear surface and detector 6 is 1mm.
In imaging lens group 3, in this patent optical system, the focal length of each optical element of lens, refractive index and radius-of-curvature meet the following conditions respectively:
Face, the present invention whole world annular Large visual angle moon edge optical image-forming objective lens reaches following optical index:
Focal length: f '=12mm; Relative aperture: F=2; Practical spectral line scope: 350nm ~ 500nm; Field angle: 2W=120 ° ~ 150 ° (image space target surface is the annular region of radius 3.212mm ~ 6.919mm); Distortion: <0.12%; Energy barycenter deviation: <7 μm; Colo(u)r bias: <3 μm; MTF:>0.7 (36lp/mm).
As shown in Figure 4, optical system energy distribution curve, 80% concentration of energy within 15 μm, the comparatively unification of each visual field encircled energy.
As shown in Figure 5, shortwave and long wave chromatic longitudiinal aberration maximal value are less than 3 μm, and shortwave and reference wave chromatic longitudiinal aberration maximal value are less than 3 μm.
As shown in Figure 6, optical system MTF curve, each visual field modulation transfer function all more than 0.7, for follow-up debuging leaves larger surplus.
Claims (3)
1. global face annular Large visual angle moon edge optical image-forming objective lens; the the first plane mirror group (1) coaxially arranged by light order; second plane mirror group (2); imaging lens group (3); diaphragm (4); detector cover glass (5) and detector (6), is characterized in that
Second plane mirror group (2) is positioned at the front end of the first plane mirror group (1), and be arranged in parallel; First plane mirror group (1), it comprises around the equally distributed eight plate plane catoptrons of Z axis circumference, second plane mirror group (2), it comprises around the equally distributed eight plate plane catoptrons of Z axis circumference, the plane mirror one_to_one corresponding in two groups of plane mirror groups;
Imaging lens group (3), it comprises the first negative selenodont lens (31), the second negative selenodont lens (32), double concave type lens (33), the 3rd negative selenodont lens (34), the first lenticular lens (35), the second lenticular lens (36), the 4th negative selenodont lens (37), the 3rd lenticular lens (38) and the 4th negative selenodont lens (39) successively;
Incident ray is through each plane mirror front surface reflection of the first plane mirror group (1), and reflected by each plane mirror rear surface of the second plane mirror group (2), reflected light is more successively through the first negative selenodont lens (31), second negative selenodont lens (32), double concave type lens (33), 3rd negative selenodont lens (34), first lenticular lens (35), diaphragm (4), second lenticular lens (36), 4th negative selenodont lens (37), 3rd lenticular lens (38), 4th negative selenodont lens (39), detector cover glass (5) transmission, be detected device (6) to receive.
2. global face according to claim 1 annular Large visual angle moon edge optical image-forming objective lens, it is characterized in that, in described first plane mirror group (1), each center, plane mirror rear surface and optical axis are at a distance of 16.97mm, with the first negative selenodont lens (31) front surface distance 28mm, in second plane mirror group (2), each plane mirror front surface and optical axis are at a distance of 25.81mm, the plane mirror front surface level corresponding with plane mirror group is at a distance of 22.4mm, with its angle 22.5 °, the airspace of described first negative selenodont lens (31) rear surface and the second negative selenodont lens (32) front surface is 10.87mm, the airspace of described second negative selenodont lens (32) rear surface and double concave type lens (33) front surface is 9.04mm, the airspace of described double concave type lens (33) rear surface and the 3rd negative selenodont lens (34) front surface is 14.76mm, the airspace of described 3rd negative selenodont lens (34) rear surface and the first lenticular lens (35) front surface is 2.270mm, the airspace of described first lenticular lens (35) rear surface and stop plane is 33.35mm, the airspace of described middle stop plane and the second lenticular lens (36) front surface is 15.76mm, the airspace of described second lenticular lens (36) rear surface and the 4th negative selenodont lens (37) front surface is 0.5mm, the airspace of described 4th negative selenodont lens (37) rear surface and the 3rd lenticular lens (38) front surface is 1.98mm, the airspace of described 3rd lenticular lens (38) rear surface and the 4th negative selenodont lens (39) front surface is 2.30mm, the airspace of described 4th negative selenodont lens (39) rear surface and detector cover glass (5) front surface is 8.10mm, the airspace of described detector cover glass (5) rear surface and detector (6) is 1mm.
3. global face according to claim 1 annular Large visual angle moon edge optical image-forming objective lens, is characterized in that, in imaging lens group (3), the focal length of each optical element, refractive index and radius-of-curvature meet the following conditions respectively:
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| CN201510968152.5A CN105511060B (en) | 2015-12-22 | 2015-12-22 | The global big visual field moon edge optical image-forming objective lens of face ring shape |
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| CN201510968152.5A CN105511060B (en) | 2015-12-22 | 2015-12-22 | The global big visual field moon edge optical image-forming objective lens of face ring shape |
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| CN105511060B CN105511060B (en) | 2018-06-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113534427A (en) * | 2021-07-14 | 2021-10-22 | 西安粼粼光电科技有限公司 | Optical early warning tracking platform based on quick reflector array and working method |
| CN114353740A (en) * | 2022-01-27 | 2022-04-15 | 中国科学院长春光学精密机械与物理研究所 | Imaging method and system for flight attitude of aircraft taking earth as target |
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| CN114353740B (en) * | 2022-01-27 | 2023-02-14 | 中国科学院长春光学精密机械与物理研究所 | Imaging method and system for flight attitude of aircraft taking earth as target |
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