CN203217172U - Catadioptric ultra-wide wave band small obscuration ratio telescope optical system - Google Patents
Catadioptric ultra-wide wave band small obscuration ratio telescope optical system Download PDFInfo
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- CN203217172U CN203217172U CN 201320146632 CN201320146632U CN203217172U CN 203217172 U CN203217172 U CN 203217172U CN 201320146632 CN201320146632 CN 201320146632 CN 201320146632 U CN201320146632 U CN 201320146632U CN 203217172 U CN203217172 U CN 203217172U
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- optical system
- achromatism
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Abstract
The utility model relates to a catadioptric ultra-wide wave band small obscuration ratio telescope optical system. The catadioptric ultra-wide wave band small obscuration ratio telescope optical system comprises a secondary reflector, a main reflector, an achromatism image field corrector and an image space plane, which are sequentially arranged from the object space to the image space. The centers of the secondary reflector, the achromatism image field corrector and the image space plane are arranged on the same axis. The main reflector comprises two parts arranged on the upper portion and the lower portion of the achromatism image field corrector respectively. The catadioptric ultra-wide wave band small obscuration ratio telescope optical system is of compact structure, small center obscuration ratio, and good image quality on an axis field of view and an edge field of view. Processing, installing and adjusting of the whole system can be realized just according to conventional installing and adjusting schemes, so that production of real products is facilitated, and the system is suitable for wide popularization.
Description
Technical field
The utility model relates to the little the ratio of obstruction telescopic optical system of the super broadband of a kind of refraction-reflection.
Background technology
Optical system when the imaging of broadband scope, at first the important technological problems that will consider be aberration to the influence of system, aberration is the aberration that refracting element produces, so use reflect system can avoid the influence of aberration, realizes the imaging of broadband no color differnece.But the visual field of conventional reflect system is very little, and there is central obscuration, this class total-reflection type optical system structure complexity, it is processed and debugs very big difficulty, therefore popularity rate is very low, is from axle three reflecting optical systems as the optical system of the BHRC60 camera on the U.S. " fast bird " satellite.The greatest difficulty of refraction type systems face is the correction of aberration, if and the bore of system is when big, the lens material processing difficulties of refraction type system, therefore, present refractive optical system generally is applicable to small-bore optical system imaging in the narrow wave band, as the Φ 80mm apochromatism telescope of English field, Nanjing optics, but its suitable wave band only is that visible light is near infrared.
The utility model content
The purpose of this utility model is to overcome the defective that prior art exists, and provides the super broadband of a kind of refraction-reflection little the ratio of obstruction telescopic optical system.
The technical scheme that realizes the utility model purpose is: the little the ratio of obstruction telescopic optical system of the super broadband of a kind of refraction-reflection, the little the ratio of obstruction telescopic optical system of the super broadband of described refraction-reflection is made up of secondary mirror, principal reflection mirror, achromatism image field corrector and plane, picture side successively from object space to picture side, the center on secondary mirror, achromatism image field corrector and plane, picture side is on same axis, described principal reflection mirror divides two parts, lays respectively at the upper and lower of achromatism image field corrector.
Further, described achromatism image field corrector is made up of first refractor, second refractor, third reflect lens, fourth reflect lens, the 5th refractor successively from object space to picture side, achromatism image field corrector has focal power φ, and the focal power of first refractor, second refractor, third reflect lens, fourth reflect lens, the 5th refractor is respectively φ
1, φ
2, φ
3, φ
4, φ
5, their focal power is distributed the requirement of satisfying following formula:
φ
1+φ
2+φ
3+φ
4+φ
5 =φ
h
1φ
1+ h
2φ
2+ h
3φ
3+ h
4φ
4+ h
5φ
5 =0
∑S
Ⅰ=0
∑S
Ⅱ=0
Height when symbol h represents incident ray through each refractive lens surface in the formula.
Further, all refractors adopt commaterial to make in the described achromatism image field corrector, are spherical lens.
Further, described principal reflection mirror is recessed catoptron, and secondary mirror is convex reflector, and both are axisymmetric non-spherical reflector, and curved surface is conventional quadric surface.
Further, described quadric surface is parabola, hyperboloid or ellipsoid.
The utlity model has positive effect: the light that transmits from the infinite distant place of object space is through after the primary mirror reflects, the light backpropagation is to secondary mirror, again after the reflection, radiation direction is reverse again, this moment, the direction of propagation of light was consistent with the direction of coming from the object space propagation at first, first refractor in passing through achromatism image field corrector successively, second refractor, the third reflect lens, the fourth reflect lens, be imaged on behind the 5th refractor on the plane, picture side, achromatism image field corrector is the residual aberration of proofreading and correct after light passes through principal reflection mirror and secondary mirror, play a part simultaneously to increase the main system visual field, concrete technical indicator of the present utility model is as follows:
Telescopical clear aperture: Φ 300mm
F/#： 6
Focal length: 1800mm
Visual field: 1 °
Operation wavelength: 0.4um ~ 12um
Optical system length :≤450mm
The central obscuration ratio of system :≤8%
Picture element requires: the some disc of confusion is less than 7um on the axle, and axle outward flange visual field disc of confusion is less than 14um.
The utility model compact conformation, central obscuration are little, the picture element with the visual field, edge on the axle is good, and the processing of total system just can solve with the scheme of debuging according to routine of debuging, thereby has made things convenient for the production of actual product, is suitable for large-scale popularization and uses.
Description of drawings
Content of the present utility model is easier to be expressly understood in order to make, and according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is structural representation of the present utility model.
Wherein: 1, secondary mirror, 2, principal reflection mirror, 3, achromatism image field corrector, 4, as square plane, 31, first refractor, 32, second refractor, 33, the third reflect lens, 34, the fourth reflect lens, the 35, the 5th refractor.
Embodiment
As shown in Figure 1, the utility model is the little the ratio of obstruction telescopic optical system of the super broadband of a kind of refraction-reflection, the little the ratio of obstruction telescopic optical system of the super broadband of refraction-reflection is made up of secondary mirror 1, principal reflection mirror 2, achromatism image field corrector 3 and plane, picture side 4 successively from object space to picture side, the center on secondary mirror 1, achromatism image field corrector 3 and plane, picture side 4 is on same axis, 2 fens two parts of described principal reflection mirror lay respectively at the upper and lower of achromatism image field corrector 3.
Achromatism image field corrector 3 is made up of first refractor 31, second refractor 32, third reflect lens 33, fourth reflect lens 34, the 5th refractor 35 successively from object space to picture side, achromatism image field corrector 3 has focal power φ, and the focal power of first refractor 31, second refractor 32, third reflect lens 33, fourth reflect lens 34, the 5th refractor 35 is respectively φ
1, φ
2, φ
3, φ
4, φ
5, their focal power is distributed the requirement of satisfying following formula:
φ
1+φ
2+φ
3+φ
4+φ
5 =φ （1）
h
1φ
1+ h
2φ
2+ h
3φ
3+ h
4φ
4+ h
5φ
5 =0 （2）
∑S
Ⅰ=0 （3）
∑S
Ⅱ=0 （4）
Height when symbol h represents incident ray through each refractive lens surface in the formula, formula (1) has guaranteed that achromatism image field corrector 3 undertakes certain focal power, formula (2) has guaranteed that achromatism image field corrector 3 itself is achromatic, and formula (3), (4) make achromatism image field corrector 3 proofread and correct the residual aberration of main system.
All refractors adopt commaterial to make in the achromatism image field corrector 3, are spherical lens, and the material of refractor adopts ZNSe crystal or ZNS crystal.
Principal reflection mirror 2 is recessed catoptron, and secondary mirror 1 is convex reflector, and both are axisymmetric non-spherical reflector, and curved surface is conventional quadric surface, and quadric surface is parabola, hyperboloid or ellipsoid.
The light that transmits from the infinite distant place of object space through principal reflection mirror 2 reflections after, the light backpropagation is to secondary mirror 1, again after the reflection, radiation direction is reverse again, this moment, the direction of propagation of light was consistent with the direction of coming from the object space propagation at first, first refractor 31 in passing through achromatism image field corrector 3 successively, second refractor 32, third reflect lens 33, fourth reflect lens 34, be imaged on the plane, picture side 4 behind the 5th refractor 35, achromatism image field corrector 3 is the residual aberrations of proofreading and correct after light passes through principal reflection mirror 2 and secondary mirror 1, play a part simultaneously to increase the main system visual field, concrete technical indicator of the present utility model is as follows:
Telescopical clear aperture: Φ 300mm
F/#： 6
Focal length: 1800mm
Visual field: 1 °
Operation wavelength: 0.4um ~ 12um
Optical system length :≤450mm
The central obscuration ratio of system :≤8%
Picture element requires: the some disc of confusion is less than 7um on the axle, and axle outward flange visual field disc of confusion is less than 14um.
The utility model compact conformation, central obscuration are little, the picture element with the visual field, edge on the axle is good, and the processing of total system just can solve with the scheme of debuging according to routine of debuging, thereby has made things convenient for the production of actual product.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. little the ratio of obstruction telescopic optical system of the super broadband of refraction-reflection, it is characterized in that: the little the ratio of obstruction telescopic optical system of the super broadband of described refraction-reflection is made up of secondary mirror (1), principal reflection mirror (2), achromatism image field corrector (3) and plane, picture side (4) to picture side successively from object space, the center of secondary mirror (1), achromatism image field corrector (3) and plane, picture side (4) is on same axis, described principal reflection mirror (2) divides two parts, lays respectively at the upper and lower of achromatism image field corrector (3).
2. the little the ratio of obstruction telescopic optical system of the super broadband of refraction-reflection according to claim 1, it is characterized in that: described achromatism image field corrector (3) from object space to picture side successively by first refractor (31), second refractor (32), third reflect lens (33), fourth reflect lens (34), the 5th refractor (35) is formed, achromatism image field corrector (3) has focal power φ, first refractor (31), second refractor (32), third reflect lens (33), fourth reflect lens (34), the focal power of the 5th refractor (35) is respectively φ
1, φ
2, φ
3, φ
4, φ
5, their focal power is distributed the requirement of satisfying following formula:
φ
1+φ
2+φ
3+φ
4+φ
5 =φ
h
1φ
1+ h
2φ
2+ h
3φ
3+ h
4φ
4+ h
5φ
5 =0
∑S
Ⅰ=0
∑S
Ⅱ=0
Height when symbol h represents incident ray through each refractive lens surface in the formula.
3. the little the ratio of obstruction telescopic optical system of the super broadband of refraction-reflection according to claim 2 is characterized in that: all refractors adopt commaterials to make in the described achromatism image field corrector (3), are spherical lens.
4. the little the ratio of obstruction telescopic optical system of the super broadband of refraction-reflection according to claim 1, it is characterized in that: described principal reflection mirror (2) is recessed catoptron, secondary mirror (1) is convex reflector, and both are axisymmetric non-spherical reflector, and curved surface is conventional quadric surface.
5. the little the ratio of obstruction telescopic optical system of the super broadband of refraction-reflection according to claim 4 is characterized in that: described quadric surface is parabolic, hyperboloid or ellipsoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320146632 CN203217172U (en) | 2013-03-27 | 2013-03-27 | Catadioptric ultra-wide wave band small obscuration ratio telescope optical system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320146632 CN203217172U (en) | 2013-03-27 | 2013-03-27 | Catadioptric ultra-wide wave band small obscuration ratio telescope optical system |
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| Publication Number | Publication Date |
|---|---|
| CN203217172U true CN203217172U (en) | 2013-09-25 |
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|---|---|---|---|
| CN 201320146632 Expired - Lifetime CN203217172U (en) | 2013-03-27 | 2013-03-27 | Catadioptric ultra-wide wave band small obscuration ratio telescope optical system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511060A (en) * | 2015-12-22 | 2016-04-20 | 中国科学院长春光学精密机械与物理研究所 | Full sphere annular large visual field moon edge optical imaging object lens |
| CN106249385A (en) * | 2016-08-31 | 2016-12-21 | 中国科学院长春光学精密机械与物理研究所 | A kind of long-focus apochromatism optical lens being applicable to remote imaging |
| CN109298517A (en) * | 2018-11-05 | 2019-02-01 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of multispectral coaxial refraction-reflection type non-focus optical system |
| CN112083565A (en) * | 2020-09-27 | 2020-12-15 | 中国科学院紫金山天文台 | Card type optical system for large visual field Schmidt sky-patrolling telescope |
| CN113640981A (en) * | 2021-08-12 | 2021-11-12 | 中国科学院国家天文台南京天文光学技术研究所 | Large-caliber large-view-field double-concave-surface reflector telescope optical system |
-
2013
- 2013-03-27 CN CN 201320146632 patent/CN203217172U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511060A (en) * | 2015-12-22 | 2016-04-20 | 中国科学院长春光学精密机械与物理研究所 | Full sphere annular large visual field moon edge optical imaging object lens |
| CN105511060B (en) * | 2015-12-22 | 2018-06-22 | 中国科学院长春光学精密机械与物理研究所 | The global big visual field moon edge optical image-forming objective lens of face ring shape |
| CN106249385A (en) * | 2016-08-31 | 2016-12-21 | 中国科学院长春光学精密机械与物理研究所 | A kind of long-focus apochromatism optical lens being applicable to remote imaging |
| CN109298517A (en) * | 2018-11-05 | 2019-02-01 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of multispectral coaxial refraction-reflection type non-focus optical system |
| CN109298517B (en) * | 2018-11-05 | 2020-10-30 | 中国航空工业集团公司洛阳电光设备研究所 | Multispectral coaxial catadioptric afocal optical system |
| CN112083565A (en) * | 2020-09-27 | 2020-12-15 | 中国科学院紫金山天文台 | Card type optical system for large visual field Schmidt sky-patrolling telescope |
| CN113640981A (en) * | 2021-08-12 | 2021-11-12 | 中国科学院国家天文台南京天文光学技术研究所 | Large-caliber large-view-field double-concave-surface reflector telescope optical system |
| CN113640981B (en) * | 2021-08-12 | 2023-01-06 | 中国科学院国家天文台南京天文光学技术研究所 | Large-caliber large-view-field double-concave-surface reflector telescope optical system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 210046, No. 108, east of Gan family street, Yao street, Qixia District, Jiangsu, Nanjing Patentee after: NANJING INTANE OPTICS ENGINEERING Co.,Ltd. Address before: Qixia District of Nanjing City, Jiangsu province 210046 Gan Jia Bian East 108 Hong Kong Branch Chong Park Building 7 Patentee before: NANJING INTANE OPTICAL ENGINEERING Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |
|
| CX01 | Expiry of patent term |