CN111522145A - High-resolution wide-field-of-view photoelectric array system based on polyhedral prism beam combination - Google Patents
High-resolution wide-field-of-view photoelectric array system based on polyhedral prism beam combination Download PDFInfo
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- CN111522145A CN111522145A CN202010235997.4A CN202010235997A CN111522145A CN 111522145 A CN111522145 A CN 111522145A CN 202010235997 A CN202010235997 A CN 202010235997A CN 111522145 A CN111522145 A CN 111522145A
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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
- G02B27/10—Beam splitting or combining systems
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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
Abstract
The invention relates to the field of photoelectric array optical imaging systems, in particular to a high-resolution wide-field photoelectric array system based on polyhedral beam combination, which comprises: a central field of view sub-imaging system disposed along the primary optical axis; a plurality of edge field sub-imaging systems disposed around the central field sub-imaging system; the polygon is used for combining the light passing through the central view field sub-imaging system and the edge view field sub-imaging system, so that the combined light reaches the detector; and the optical axes of the plurality of marginal field sub-imaging systems form included angles with the main optical axis. The invention has the characteristics of high resolution, large visual field and wide imaging coverage area.
Description
Technical Field
The invention relates to the field of photoelectric array optical imaging systems, in particular to a high-resolution wide-field photoelectric array system based on polyhedral beam combination.
Background
The bionic compound eye structure in the prior art is generally shown in figure 1. The defects are that the aperture of the photoelectric array is small and the field of view is small. Therefore, a more compact bionic compound eye imaging system is needed to solve the defects of the prior art.
Disclosure of Invention
The invention aims to overcome the defects of small aperture and small field of view of the existing bionic compound eye photoelectric array.
According to a first aspect of the present invention, there is provided a high resolution wide field of view photovoltaic array system based on polygon beam combining, comprising: a central field of view sub-imaging system disposed along the primary optical axis; a plurality of edge field sub-imaging systems disposed around the central field sub-imaging system; and
the polygon is used for combining the light passing through the central view field sub-imaging system and the edge view field sub-imaging system, so that the combined light reaches the detector; and the optical axes of the plurality of marginal field sub-imaging systems form included angles with the main optical axis.
Preferably, the resolution of the central field of view sub-imaging system is higher than that of the edge field of view sub-imaging system; the field of view of the central field of view sub-imaging system is lower than that of the edge field of view sub-imaging system.
Preferably, the high-resolution wide-field-of-view photoelectric array system based on polygon beam combination further includes an image processing device, configured to perform stitching processing on the images reaching the detector to obtain a processed image.
Preferably, the number of the edge field sub-imaging systems is 8.
Preferably, the outline dimension of the photoelectric array system satisfies the following conditions: the radius is less than 60 mm.
Preferably, the photovoltaic array system satisfies: the total weight is less than 1 kg.
Preferably, the photo array system is disposed in an infrared seeker.
The invention has the beneficial effects that:
1. in one embodiment, the optical system is a medium-wave refrigeration infrared optical system, the optical system is 486-656 nm, the object space view field is 160 degrees multiplied by 160 degrees, the resolution is 1024 multiplied by 1024, the F number is 8, and the optical system has the characteristics of high resolution, large view field and wide imaging coverage area.
2. In one embodiment, the system is designed in a miniaturized mode, the external dimension is less than R60mm, the total weight is less than 1kg, and the system has the advantages of being compact in structure, small in size and light in weight.
3. The system combines beams through the polygon, and a clearer imaging result can be obtained by carrying out image processing on the combined beam.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1(a) is a schematic view of an orthographic view of a bionic compound eye in the prior art; FIG. 1(b) is a schematic side view of a bionic compound eye in the prior art;
FIG. 2 is a schematic side view of an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of one embodiment of the present invention viewed from the front;
FIG. 4 is an enlarged view of a portion of the imaging area of FIG. 3;
FIG. 5 is a graph of a transfer function of an embodiment of the present invention;
FIG. 6 is a speckle pattern of an embodiment of the invention;
FIG. 7 is a graph of aberration curves for an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The invention provides a high-resolution wide-field photoelectric array system based on polyhedral prism beam combination, as shown in fig. 2 and 3, comprising: a central field of view sub-imaging system 1 disposed along the primary optical axis; a plurality of fringe field of view sub-imaging systems 2 disposed around the central field of view sub-imaging system 1; and a polygon 3 for combining the light passing through the central field of view sub-imaging system and the edge field of view sub-imaging system, so that the combined light reaches the detector 4.
The central field of view sub-imaging system is not shown in fig. 2 due to view occlusion problems. The faceted prisms are not shown in fig. 3.
In one embodiment, the resolution of the central field of view sub-imaging system 1 is higher than that of the edge field of view sub-imaging system 2; the field of view of the central field of view sub-imaging system 1 is lower than that of the marginal field of view imaging subsystem 2. The central view field sub-imaging system 1 is used for performing high-resolution imaging on a central area of a view field, and is characterized in that the view field is small and is arranged at the central position of the system so as to exchange long view distance and high resolution of the central view field. The optical axis of each marginal field sub-imaging system 2 forms an included angle with the main optical axis of the system, and the arrangement can widen the field of view. Each edge field sub-imaging system 2 is an optical system with a large field angle and low resolution.
Fig. 4 is a partial enlarged view of an embodiment of the detector portion of fig. 3, in which the number of edge field sub-imaging systems 2 is 8. Fig. 4 shows the approximate positions of the various subsystems imaged on the detector by the polygon 3, with the smaller polygon area in the center corresponding to the central field of view sub-imaging system 1 and the 8 larger polygons in the periphery corresponding to the edge field of view sub-imaging system 2. Because the central field sub-imaging system 1 adopts an optical structure with higher resolution, the central region of the image has higher definition after the image of the detector is subsequently processed. Compared with the prior art, the invention can improve the resolution of the central area of the image without increasing the size of the system and reducing the field angle of the system.
The system of the invention may further comprise image processing means for stitching the images arriving at the detector 4 to obtain processed images. The image processing device can be a computer, and the processing process can be integrating, eliminating interference, eliminating repeated areas and the like of the images corresponding to the sub-imaging systems to form a complete and clear image.
< example >
The structure of the present embodiment is as shown in fig. 2 and fig. 3, which includes 8 edge field sub-imaging systems 2 and 1 central field sub-imaging system 1, and the wide field is realized by combining the polygon 3 and the field splicing is completed by image processing; the wide field of view and high resolution are realized by combining a high-resolution imaging system arranged at the center.
In this embodiment, the field size of the central field sub-imaging system is 40 ° × 40 °, the field size of the edge field sub-imaging system is 80 ° × 80 °, the field sizes are arranged as shown in fig. 2, and the total field angle is 160 ° × 160 °. The optical system is designed in an optical athermalization design, so that the excellent imaging quality of the optical system in the range of-40 ℃ to +60 ℃ can be ensured. The working wave band of the optical system is 486 nm-656 nm, the object space visual field is 160 degrees multiplied by 160 degrees, the resolution is 1024 multiplied by 1024, the F number is 8, and the modulation transfer function 0 visual field is more than or equal to 0.45(90 lp/mm); the total field of view is more than or equal to 0.27(90 p/mm); the transfer function curve, the diffuse spot, and the aberration curve of this embodiment are shown in fig. 5 to 7.
In this embodiment, the system satisfies: the total weight is less than 1 kg; the overall dimension satisfies: the radius is less than 60 mm. Due to small size and light weight, the infrared seeker is particularly suitable for being arranged in an infrared seeker.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (7)
1. A high-resolution wide-field-of-view photovoltaic array system based on polyhedral beam combination is characterized by comprising:
a central field of view sub-imaging system disposed along the primary optical axis;
a plurality of edge field sub-imaging systems disposed around the central field sub-imaging system; and
the polygon is used for combining the light passing through the central view field sub-imaging system and the edge view field sub-imaging system, so that the combined light reaches the detector;
and the optical axes of the plurality of marginal field sub-imaging systems form included angles with the main optical axis.
2. The polygon beam combining based high resolution wide field of view photovoltaic array system of claim 1,
the resolution of the central field-of-view sub-imaging system is higher than that of the edge field-of-view sub-imaging system;
the field of view of the central field of view sub-imaging system is lower than that of the edge field of view sub-imaging system.
3. The polygon beam combining based high resolution wide field of view photovoltaic array system of claim 1, further comprising
And the image processing device is used for splicing the images reaching the detector to obtain processed images.
4. The polygon beam combining based high resolution wide field of view photovoltaic array system of claim 1, wherein the number of edge field of view sub-imaging systems is 8.
5. The polygon beam combining based high resolution wide field of view photovoltaic array system of claim 1, wherein the dimensions of the photovoltaic array system are such that: the radius is less than 60 mm.
6. The polygon beam combining based high resolution wide field of view photovoltaic array system of claim 5, wherein the photovoltaic array system satisfies: the total weight is less than 1 kg.
7. The polygon beam combining based high resolution wide field of view photovoltaic array system of claim 5 or 6, wherein the photovoltaic array system is disposed in an infrared seeker.
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| CN202010235997.4A CN111522145A (en) | 2020-03-30 | 2020-03-30 | High-resolution wide-field-of-view photoelectric array system based on polyhedral prism beam combination |
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| US20050068632A1 (en) * | 2003-09-25 | 2005-03-31 | Holloway Paul H. | High resolution multi-lens imaging device |
| CN103616758A (en) * | 2013-11-15 | 2014-03-05 | 天津大学 | 180-degree large visual field free-form surface compound eye system |
| CN104165626A (en) * | 2014-06-18 | 2014-11-26 | 长春理工大学 | Bionic facetted eye imaging target positioning system |
| CN109462718A (en) * | 2017-09-06 | 2019-03-12 | 旺玖科技股份有限公司 | Panoramic image acquisition equipment with at least three lenses and panoramic image acquisition module thereof |
| CN110595625A (en) * | 2019-09-17 | 2019-12-20 | 北京理工大学 | Cross-shaped five-aperture view field partially-overlapped bionic thermal imaging system |
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- 2020-03-30 CN CN202010235997.4A patent/CN111522145A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050068632A1 (en) * | 2003-09-25 | 2005-03-31 | Holloway Paul H. | High resolution multi-lens imaging device |
| CN103616758A (en) * | 2013-11-15 | 2014-03-05 | 天津大学 | 180-degree large visual field free-form surface compound eye system |
| CN104165626A (en) * | 2014-06-18 | 2014-11-26 | 长春理工大学 | Bionic facetted eye imaging target positioning system |
| CN109462718A (en) * | 2017-09-06 | 2019-03-12 | 旺玖科技股份有限公司 | Panoramic image acquisition equipment with at least three lenses and panoramic image acquisition module thereof |
| CN110595625A (en) * | 2019-09-17 | 2019-12-20 | 北京理工大学 | Cross-shaped five-aperture view field partially-overlapped bionic thermal imaging system |
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