CN105035367B - Closely object space telecentricity docks sensor optical system - Google Patents
Closely object space telecentricity docks sensor optical system Download PDFInfo
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- CN105035367B CN105035367B CN201510465866.4A CN201510465866A CN105035367B CN 105035367 B CN105035367 B CN 105035367B CN 201510465866 A CN201510465866 A CN 201510465866A CN 105035367 B CN105035367 B CN 105035367B
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Abstract
The invention provides a kind of closely object space telecentricity docking sensor optical system, including window glass, it is arranged on the first lens on rear side of window glass, the second lens being arranged on rear side of the first lens, the 3rd lens being arranged on rear side of the second lens, the aperture diaphragm being arranged on rear side of the 3rd lens, it is arranged on the 4th lens on rear side of aperture diaphragm, it is arranged on the 5th lens on rear side of the 4th lens, it is arranged on the 6th lens on rear side of the 5th lens, it is arranged on the 7th lens on rear side of the 6th lens, and optical system focal plane；Wherein, light sequentially passes through window glass, the first lens, the second lens, the 3rd lens, aperture diaphragm, the 4th lens, the 5th lens, the 6th lens, the 7th lens and is mapped in the optical system focal plane.There is independent diaphragm in the present invention between the 3rd lens and the 4th lens, be conducive to the veiling glare of whole optical system to suppress.
Description
Technical field
The present invention relates to space articulation optical technology, in particular it relates to a kind of closely object space telecentricity docking sensor light
System.
Background technology
With developing rapidly for space science technology, the activity space continuous space-ward extension of the mankind will be realized
Space sets up large-scale laboratory and realizes goods and the transport of personnel, it is necessary to which a problem of solution is exactly spacecraft
Docking technique, and it is exactly to ensure the nucleus equipment that space articulation is smoothly implemented to dock sensor.
At present, China there is no the optical system patent for being exclusively used in docking sensor published, according to docking sensor
Work characteristics, many optical systems applied to star sensor can also take into account the use demand of docking sensor, such as Hao Yun
Coloured silk et al. issue《A kind of optical system of attitude sensor》Its visual field is larger, as matter is good, can take into account star sensor and its
The use demand of his attitude sensor, but the realization of its light path is more complicated, and apply when docking sensor, due to not being telecentricity system
System, the change of image-forming range has large effect to measurement accuracy.Therefore design a kind of small size size, object space telecentricity it is special
It is imperative in the optical system of docking sensor.
The content of the invention
For defect of the prior art, it is an object of the invention to provide a kind of closely object space telecentricity docking sensor light
System.
The closely object space telecentricity docking sensor optical system provided according to the present invention, including set gradually along light path
Window glass, the first lens, the second lens, the 3rd lens, aperture diaphragm, the 4th lens, the 5th lens, the 6th lens, the 7th
Lens and optical system focal plane；
Wherein, light sequentially pass through window glass, it is the first lens, the second lens, the 3rd lens, aperture diaphragm, the 4th saturating
Mirror, the 5th lens, the 6th lens, the 7th lens are mapped in the optical system focal plane.
Preferably, aperture diaphragm by window glass, the first lens, the second lens, the 3rd lens imaging in object space
Infinite distant positions, thus chief ray constitutes object space telecentric beam path parallel to optical axis.
Preferably, the window glass uses curved using plate glass, the first lens using double-concave negative lens, the second lens
Month negative lens, the 3rd lens are negative saturating using concave-concave using bent moon negative lens, the 5th lens using biconvex positive lens, the 4th lens
Mirror, the 6th lens use biconvex positive lens using bent moon negative lens, the 7th lens.
Preferably, the window glass use the ratio between thickness and clear aperture for 0.125 to 0.2 plate glass；It is described
Axial distance between the rear surface of window glass and the preceding surface of the first lens is 1mm to 3mm；
First lens use the ratio between thickness and clear aperture for 0.1 to 0.2 and focal length and the closely object space are remote
The double-concave negative lens that the ratio between heart docking sensor optical system focal length is 5 to 8；Surface and the second lens after first lens
It is 0.6 to 0.8 that axial distance between preceding surface, which docks the ratio between sensor optical system focal length with the closely object space telecentricity,；
Second lens use the ratio between thickness and clear aperture for 0.3 to 0.5 and focal length and the closely object space are remote
The bent moon negative lens that the ratio between heart docking sensor optical system focal length is 1.5 to 2；Surface and the 3rd lens after second lens
Axial distance between preceding surface docked with the closely object space telecentricity the ratio between sensor optical system focal length for 0.15 to
0.2；
3rd lens use the ratio between thickness and clear aperture for 0.2 to 0.4 and focal length and the closely object space are remote
The biconvex positive lens that the ratio between heart docking sensor optical system focal length is 1.6 to 2；Surface and aperture diaphragm after 3rd lens
Between axial distance the ratio between sensor optical system focal length is docked with the closely object space telecentricity for 0.8 to 1.2；
Axial distance between the aperture diaphragm and the 4th lens docks sensor light with the closely object space telecentricity
It is 0.15 to 0.2 to learn the ratio between system focal length；
4th lens use the ratio between thickness and clear aperture for 0.45 to 0.55 and focal length and the closely object space
The bent moon negative lens that the ratio between telecentricity docking sensor optical system focal length is 1.8 to 2.2；Surface and the 5th after 4th lens
Axial distance between lens front surface docked with the closely object space telecentricity the ratio between sensor optical system focal length for 0.4 to
0.6；
5th lens use the ratio between thickness and clear aperture for 0.25 to 0.35 and focal length and the closely object space
The double-concave negative lens that the ratio between telecentricity docking sensor optical system focal length is -0.7 to -0.5；Surface and the after 5th lens
It is 0.1 that axial distance between six lens front surfaces, which docks the ratio between sensor optical system focal length with the closely object space telecentricity,
To 0.15；
6th lens use the ratio between thickness and clear aperture for 0.3 to 0.5 and focal length and the closely object space are remote
The bent moon negative lens that the ratio between heart docking sensor optical system focal length is 1.3 to 1.5；Surface and the 7th saturating after 6th lens
The ratio between axial distance and optical system focal length between the preceding surface of mirror are 0.45 to 0.6；
7th lens use the ratio between thickness and clear aperture for 0.25 to 0.3 and focal length and the closely object space are remote
The biconvex positive lens that the ratio between heart docking sensor optical system focal length is 1.3 to 1.6；Surface and optical system after 7th lens
The ratio between axial distance and optical system focal length between system focal plane are 1 to 1.5.
Preferably, the window glass is made of fused quartz；First lens are made of dense barium flint；Institute
The second lens, the 3rd lens, the 4th lens, the 6th lens, the 7th lens are stated to be made of dense crown；5th lens are adopted
It is made of dense flint class glass.
Preferably, in addition to multiple spacer rings；The window glass, first lens, second lens, the described 3rd
Lens, the aperture diaphragm, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the light
System focal plane is learned to be separately positioned on the inside of the spacer ring.
Compared with prior art, the present invention has following beneficial effect：
1st, there is independent diaphragm in the present invention between the 3rd lens and the 4th lens, be conducive to the veiling glare of whole optical system
Suppress；
2nd, the present invention has high-resolution, athermal, object space telecentricity, small size dimensional space optical system, is suitable as height
Precision closely docks sensor application.
3rd, the present invention uses object space telecentric beam path, target is not influenceed measurement essence in 1.5 meters to 15 meters of measurement range
Degree；
4th, the present invention is provided with spacer ring optical system using athermal optimization design, it is ensured that in -40 DEG C~35 DEG C conditions
It is lower to be imaged, and as of fine quality good；
5th, the whole optical system structure of the present invention is symmetrical, compact, beneficial to the correction to the axial aberration that hangs down and realizes that low distortion is set
Meter；
6th, the whole optical system material of the present invention is ordinary glass material, and low cost can be achieved and is easy to processing.
Brief description of the drawings
By reading the detailed description made with reference to the following drawings to non-limiting example, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the encircled energy curve map to 1.5 meters of distance imagings in the embodiment of the present invention；
Fig. 3 is the encircled energy curve map to 15 meters of distance imagings in the embodiment of the present invention；
Fig. 4 is the ratio chromatism, curve map in the embodiment of the present invention.
In figure：
1 is window；
2 be the first lens；
3 be the second lens；
4 be the 3rd lens；
5 be aperture diaphragm；
6 be the 4th lens；
7 be the 5th lens；
8 be the 6th lens；
9 be the 7th lens；
10 be optical system focal plane.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that to the ordinary skill of this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
In the present embodiment, as shown in figure 1, the closely object space telecentricity that the present invention is provided docks sensor optical system,
Including the window glass 1 set gradually along light path, the first lens 2, the second lens 3, the 3rd lens 4, aperture diaphragm 5, the 4th is saturating
Mirror 6, the 5th lens 7, the 6th lens 8, the 7th lens 9 and optical system focal plane 10；Wherein, light sequentially passes through window glass
Glass 1, the first lens 2, the second lens 3, the 3rd lens 4, aperture diaphragm 5, the 4th lens 6, the 5th lens 7, the 6th lens 8,
Seven lens 9 are mapped in the optical system focal plane 10.
Aperture diaphragm 5 is imaged on by the window glass 1 on front side of it, the first lens 2, the second lens 3, the 3rd lens 4
The infinite distant positions of object space, thus chief ray constitutes object space telecentric beam path parallel to optical axis.
The window glass 1 is born using plate glass, the first lens 2 using double-concave negative lens, the second lens 3 using bent moon
Lens, the 3rd lens 4 using biconvex positive lens, the 4th lens 6 using bent moon negative lens, the 5th lens 7 using double-concave negative lens,
6th lens 8 use biconvex positive lens using bent moon negative lens, the 7th lens 9.
More specifically, the window glass 1 use the ratio between thickness and clear aperture for 0.125 to 0.2 plate glass；
Axial distance between the rear surface of the window glass 1 and the preceding surface of the first lens 2 is 1mm to 3mm；
First lens 2 use the ratio between thickness and clear aperture for 0.1 to 0.2 and focal length and the closely object space are remote
The double-concave negative lens that the ratio between heart docking sensor optical system focal length is 5 to 8；Surface and the second lens 3 after first lens 2
Preceding surface between axial distance docked with the closely object space telecentricity the ratio between sensor optical system focal length for 0.6 to
0.8；
Second lens 3 use the ratio between thickness and clear aperture for 0.3 to 0.5 and focal length and the closely object space are remote
The bent moon negative lens that the ratio between heart docking sensor optical system focal length is 1.5 to 2；Surface and the 3rd saturating after second lens 3
Axial distance between the preceding surface of mirror 4 docked with the closely object space telecentricity the ratio between sensor optical system focal length for 0.15 to
0.2；
3rd lens 4 use the ratio between thickness and clear aperture for 0.2 to 0.4 and focal length and the closely object space are remote
The biconvex positive lens that the ratio between heart docking sensor optical system focal length is 1.6 to 2；Surface and aperture light after 3rd lens 4
It is 0.8 to 1.2 that axial distance between door screen 5, which docks the ratio between sensor optical system focal length with the closely object space telecentricity,；
Axial distance between the aperture diaphragm 5 and the 4th lens 6 docks sensor with the closely object space telecentricity
The ratio between optical system focal length is 0.15 to 0.2；
4th lens 6 use the ratio between thickness and clear aperture for 0.45 to 0.55 and focal length and the closely object space
The bent moon negative lens that the ratio between telecentricity docking sensor optical system focal length is 1.8 to 2.2；Surface and the after 4th lens 6
Axial distance between the preceding surface of five lens 7 docks the ratio between sensor optical system focal length with the closely object space telecentricity and is
0.4 to 0.6；
5th lens 7 use the ratio between thickness and clear aperture for 0.25 to 0.35 and focal length and the closely object space
The double-concave negative lens that the ratio between telecentricity docking sensor optical system focal length is -0.7 to -0.5；After 5th lens 7 surface with
Axial distance between the preceding surface of 6th lens 8 docks the ratio between sensor optical system focal length with the closely object space telecentricity and is
0.1 to 0.15；
6th lens 8 use the ratio between thickness and clear aperture for 0.3 to 0.5 and focal length and the closely object space are remote
The bent moon negative lens that the ratio between heart docking sensor optical system focal length is 1.3 to 1.5；Surface and the 7th after 6th lens 8
The ratio between axial distance and optical system focal length between the preceding surface of lens 9 are 0.45 to 0.6；
7th lens 9 use the ratio between thickness and clear aperture for 0.25 to 0.3 and focal length and the closely object space
The biconvex positive lens that the ratio between telecentricity docking sensor optical system focal length is 1.3 to 1.6；Surface and light after 7th lens 9
It is 1 to 1.5 to learn the ratio between axial distance and optical system focal length between system focal plane 10.
The window glass 1 is made of fused quartz；First lens 2 are made of dense barium flint；Described
Two lens 3, the 3rd lens 4, the 4th lens 6, the 6th lens 8, the 7th lens 9 are made of dense crown；5th lens 6
It is made of dense flint class glass.
The closely object space telecentricity docking sensor optical system that the present invention is provided, in addition to multiple spacer rings；The window
Glass 1, first lens 2, second lens 3, the 3rd lens 4, the aperture diaphragm 5, the 4th lens 6,
5th lens 7, the 6th lens 8, the 7th lens 9 and the optical system focal plane 10 are separately positioned on described
On the inside of spacer ring.
Present invention employs athermal design, under the conditions of spacer ring is done using titanium alloy material, between -40 DEG C to 35 DEG C
Imaging is determined as quality guarantee keeps steady.
In one more specifically embodiment, the closely object space telecentricity docking sensor optical system that the present invention is provided
Focal length is 10mm, and relative aperture 1/6.66, the angle of visual field is 54 °, 0.45 μm to 0.68 μm of imaging spectral scope, above-described embodiment light
Each face parameter of system is as follows.
| Element names | Face type | Radius of curvature (mm) | Interval or thickness (mm) | Material |
| Window glass 1 | Plane | ∞ | 4 | Fused quartz |
| Plane | ∞ | 2 | ||
| First lens 2 | Concave surface | -40.186 | 1.5 | Dense barium flint ZBAF20 |
| Concave surface | 13.188 | 6.14 | ||
| Second lens 3 | Concave surface | -21.6 | 4.5 | ZK9B |
| Convex surface | -14.2 | 1.85 | ||
| 3rd lens 4 | Convex surface | 14.569 | 3.58 | ZK9B |
| Convex surface | -56.162 | 9.88 | ||
| Aperture diaphragm 5 | 1.72 | |||
| 4th lens 6 | Concave surface | -9.461 | 3.07 | ZK9B |
| Convex surface | -6.166 | 0.5 | ||
| 5th lens 7 | Concave surface | -7.062 | 1.5 | ZF6 |
| Concave surface | 16.52 | 1.2 | ||
| 6th lens 8 | Concave surface | -66 | 2.68 | ZK9B |
| Convex surface | -8.091 | 0.5 | ||
| 7th lens 9 | Convex surface | 16.377 | 3.38 | ZK9B |
| Convex surface | -20.96 | 10 |
In the present embodiment, the present invention is imaged to 1.5 meters of object distances encircled energy curve map 2 and 15 meters of object distances are imaged
Encircled energy curve map 3 understand, in the range of full filed in 1.5 meters to 15 meters of image-forming range, in the circle of 8 μm of radiuses
Energy concentration inside is better than 80%, and the demand that high-resolution imaging meets high accuracy docking measurement can be achieved.
Maximum ratio chromatism, in the range of full filed can be seen that within 3 μm by such as Fig. 4, it can thus be appreciated that the optical system
Chromatic aberration correction is excellent on the basis of using ordinary glass material.
In the present embodiment, overall size of the invention is less than 60mm × 20mm × 20mm, can meet small size size application
Environment.Optical system of the present invention is provided with aperture diaphragm 5 between the 3rd lens 4 and the 4th lens 6, can be to optical system
Veiling glare is limited.The present invention is a kind of high-resolution, athermal, object space telecentricity, closely docks sensor optical system, can be with
Meet the demand for closely realizing high accuracy docking sensor at 1.5 meters to 15 meters.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (4)
1. a kind of closely object space telecentricity docking sensor optical system, it is characterised in that including the window set gradually along light path
It is mouthful glass (1), the first lens (2), the second lens (3), the 3rd lens (4), aperture diaphragm (5), the 4th lens (6), the 5th saturating
Mirror (7), the 6th lens (8), the 7th lens (9) and optical system focal plane (10)；
Wherein, light sequentially passes through window glass (1), the first lens (2), the second lens (3), the 3rd lens (4), aperture diaphragm
(5), the 4th lens (6), the 5th lens (7), the 6th lens (8), the 7th lens (9) are mapped to the optical system focal plane (10)
On；
The window glass (1) uses bent moon using plate glass, the first lens (2) using double-concave negative lens, the second lens (3)
Negative lens, the 3rd lens (4) are using biconvex positive lens, the 4th lens (6) using bent moon negative lens, the 5th lens (7) using double
Recessed negative lens, the 6th lens (8) use biconvex positive lens using bent moon negative lens, the 7th lens (9)；
The window glass (1) use the ratio between thickness and clear aperture for 0.125 to 0.2 plate glass；The window glass
(1) the axial distance between rear surface and the preceding surface of the first lens (2) is 1mm to 3mm；
First lens (2) use the ratio between thickness and clear aperture for 0.1 to 0.2 and focal length and the closely object space telecentricity
Dock the double-concave negative lens that the ratio between sensor optical system focal length is 5 to 8；First lens (2) surface and the second lens afterwards
(3) it is 0.6 that the axial distance between preceding surface, which docks the ratio between sensor optical system focal length with the closely object space telecentricity,
To 0.8；
Second lens (3) use the ratio between thickness and clear aperture for 0.3 to 0.5 and focal length and the closely object space telecentricity
Dock the bent moon negative lens that the ratio between sensor optical system focal length is 1.5 to 2；Second lens (3) surface and the 3rd saturating afterwards
It is 0.15 that axial distance between mirror (4) preceding surface, which docks the ratio between sensor optical system focal length with the closely object space telecentricity,
To 0.2；
3rd lens (4) use the ratio between thickness and clear aperture for 0.2 to 0.4 and focal length and the closely object space telecentricity
Dock the biconvex positive lens that the ratio between sensor optical system focal length is 1.6 to 2；3rd lens (4) surface and aperture light afterwards
It is 0.8 to 1.2 that axial distance between late (5), which docks the ratio between sensor optical system focal length with the closely object space telecentricity,；
Axial distance between the aperture diaphragm (5) and the 4th lens (6) docks sensor with the closely object space telecentricity
The ratio between optical system focal length is 0.15 to 0.2；
4th lens (6) use the ratio between thickness and clear aperture for 0.45 to 0.55 and focal length and the closely object space are remote
The bent moon negative lens that the ratio between heart docking sensor optical system focal length is 1.8 to 2.2；4th lens (6) surface and the afterwards
Axial distance between five lens (7) preceding surface docks the ratio between sensor optical system focal length with the closely object space telecentricity and is
0.4 to 0.6；
5th lens (7) use the ratio between thickness and clear aperture for 0.25 to 0.35 and focal length and the closely object space are remote
The double-concave negative lens that the ratio between heart docking sensor optical system focal length is -0.7 to -0.5；5th lens (7) afterwards surface with
Axial distance between 6th lens (8) preceding surface docks the ratio between sensor optical system focal length with the closely object space telecentricity
For 0.1 to 0.15；
6th lens (8) use the ratio between thickness and clear aperture for 0.3 to 0.5 and focal length and the closely object space telecentricity
Dock the bent moon negative lens that the ratio between sensor optical system focal length is 1.3 to 1.5；6th lens (8) surface and the 7th afterwards
The ratio between axial distance and optical system focal length between lens (9) preceding surface are 0.45 to 0.6；
7th lens (9) use the ratio between thickness and clear aperture for 0.25 to 0.3 and focal length and the closely object space are remote
The biconvex positive lens that the ratio between heart docking sensor optical system focal length is 1.3 to 1.6；7th lens (9) surface and light afterwards
It is 1 to 1.5 to learn the ratio between axial distance and optical system focal length between system focal plane (10).
2. closely object space telecentricity according to claim 1 docks sensor optical system, it is characterised in that aperture diaphragm
(5) the infinite amphi position of object space is imaged on by window glass (1), the first lens (2), the second lens (3), the 3rd lens (4)
Put, thus chief ray constitutes object space telecentric beam path parallel to optical axis.
3. closely object space telecentricity according to claim 1 docks sensor optical system, it is characterised in that the window
Glass (1) is made of fused quartz；First lens (2) are made of dense barium flint；Second lens (3),
Three lens (4), the 4th lens (6), the 6th lens (8), the 7th lens (9) are made of dense crown；5th lens (6)
It is made of dense flint class glass.
4. closely object space telecentricity according to claim 1 docks sensor optical system, it is characterised in that also including many
Individual spacer ring；The window glass (1), first lens (2), second lens (3), the 3rd lens (4), the hole
Footpath diaphragm (5), the 4th lens (6), the 5th lens (7), the 6th lens (8), the 7th lens (9) and institute
Optical system focal plane (10) is stated to be separately positioned on the inside of the spacer ring.
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| CN108287402B (en) * | 2018-03-27 | 2024-04-19 | 视科光电科技（深圳）有限公司 | Lens module and 3D printer |
| CN111796399B (en) * | 2020-07-31 | 2021-11-16 | 华北水利水电大学 | Static star simulator projection optical system |
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| CN1115578C (en) * | 1998-12-09 | 2003-07-23 | 中国科学院西安光学精密机械研究所 | Image space telecentric double-Gaussian optical system |
| US6563650B2 (en) * | 2001-01-17 | 2003-05-13 | 3M Innovative Properties Company | Compact, telecentric projection lenses for use with pixelized panels |
| JP4211373B2 (en) * | 2002-12-06 | 2009-01-21 | セイコーエプソン株式会社 | Projection lens and projector provided with the same |
| US6853493B2 (en) * | 2003-01-07 | 2005-02-08 | 3M Innovative Properties Company | Folded, telecentric projection lenses for use with pixelized panels |
| CN101209753B (en) * | 2006-12-25 | 2011-06-15 | 北京控制工程研究所 | Star sensor system imaging structure |
| CN102023369A (en) * | 2009-09-17 | 2011-04-20 | 中国科学院西安光学精密机械研究所 | Ultra-low distortion large-view-field image space telecentric optical system |
| CN103245335B (en) * | 2013-05-21 | 2015-11-04 | 北京理工大学 | A kind of autonomous Servicing spacecraft super close distance vision pose measuring method in-orbit |
| CN103399392B (en) * | 2013-08-20 | 2015-06-17 | 哈尔滨工业大学 | Large-viewing-field and high-precision star sensor optical system |
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