CN111551954A - Associated imaging detection device and system - Google Patents
Associated imaging detection device and system Download PDFInfo
- Publication number
- CN111551954A CN111551954A CN202010523445.3A CN202010523445A CN111551954A CN 111551954 A CN111551954 A CN 111551954A CN 202010523445 A CN202010523445 A CN 202010523445A CN 111551954 A CN111551954 A CN 111551954A
- Authority
- CN
- China
- Prior art keywords
- light
- module
- light path
- lens
- path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4814—Constructional features, e.g. arrangements of optical elements of transmitters alone
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
Abstract
The invention relates to a correlation imaging detection device, which comprises a first lens module, a first reflection module, a second lens module, a second reflection module, a spatial light modulation module and a receiving module, wherein the first lens module is used for imaging a first image; a first lens module receives a target light field; the first reflection module is arranged on a light path of light rays emitted from the first lens module, the light path of the light rays emitted from the first lens module is a first light path, the first reflection module changes the transmission direction of the first light path, and the light path of the light rays emitted from the first reflection module is a second light path; the second lens module is arranged on a light path of the light emitted from the first reflection module, and the light path of the light emitted from the second lens module is a second light path; the second reflection module is arranged on the second light path, the transmission direction of the second light path is changed at least once, and the light path of the light emitted from the second reflection module is a third light path; the spatial light modulation module is arranged on a light path of the light emitted from the second reflection module, and the receiving module is arranged on the light path of the light emitted from the spatial light modulation module.
Description
Technical Field
The invention relates to the technical field of optical imaging, in particular to a correlation imaging detection device and system.
Background
Ghost imaging is a novel imaging technology, and an image of an object is restored through a correlation algorithm or a compressed sensing method and the like. Compared with a common imaging mode, ghost imaging has the characteristics of strong anti-interference, high-sensitivity detection, wide-view imaging and the like, and has great application potential in the fields of astronomical observation, remote sensing imaging, military investigation, medical imaging and the like.
The existing associated imaging system adopts a receiving light path which is too long for secondary imaging or more than secondary imaging, the associated imaging detection device occupies a large space, the space utilization rate is low, and the application is limited.
Disclosure of Invention
Therefore, it is necessary to provide a correlated imaging detection apparatus and system for solving the problems of the conventional correlated imaging system that the receiving optical path for secondary imaging or more than secondary imaging is too long, the space occupied by the correlated imaging detection apparatus is large, and the space utilization rate is low.
An associative imaging detection apparatus comprising:
a first lens module for receiving a target light field carrying target information;
the first reflection module is arranged on a light path of light emitted from the first lens module, the light path of light emitted from the first lens module is a first light path, the first reflection module is used for changing the propagation direction of the first light path, and the light path of light emitted from the first reflection module is a second light path;
the second lens module is arranged on a light path of the light emitted from the first reflection module, and the light path of the light emitted from the second lens module is a second light path;
the second reflection module is arranged on a light path of the light emitted from the second lens module and used for changing the propagation direction of the second light path at least once, and the light path of the light emitted from the second reflection module is a third light path;
the spatial light modulation module is arranged on a light path of light emitted from the second reflection module, the target light field is transmitted to the spatial light modulation module through the first light path, the second light path and the third light path in sequence, and the spatial light modulation module is used for performing spatial intensity modulation on the target light field to form a modulated light field;
and the receiving module is arranged on a light path of the emergent light of the spatial light modulation module and used for receiving the modulated light field and converting the modulated light field into an electric signal.
In one embodiment, the second reflecting module comprises at least one second mirror, the propagation direction of the second light path is changed every time when the second mirror passes through, and the light path of the light ray emitted from the last second mirror is a third light path; or
The second reflection module comprises at least one second prism, the propagation direction of the second light path is changed once through the second prism, and the light path of the light emitted from the last second prism is a third light path.
In one embodiment, the receiving module includes:
the third lens module is arranged on a light path of light rays emitted from the spatial light modulation module and used for converging the modulated light field;
and the detector is arranged on a light path of the emergent light rays from the third lens module and used for receiving the converged modulated light field and converting the modulated light field into an electric signal.
In one embodiment, the third lens module includes a converging lens disposed on an optical path of the light emitted from the spatial light modulation module for converging the modulated light field.
In one embodiment, the detector is one of a single pixel detector, a charge coupled device, a complementary metal oxide semiconductor, and a multi-pixel photon counter.
In one embodiment, the spatial light modulation module comprises a digital micromirror array disposed on the light path of the light emitted from the second reflection module for performing spatial intensity modulation on the target light field to form a modulated light field; or
The spatial light modulation module comprises an absorption type modulator, the absorption type modulator is arranged on a light path of light rays emitted from the second reflection module and is used for carrying out spatial intensity modulation on the target light field to form a modulated light field, and the absorption type modulator comprises a superconducting material module.
In one embodiment, the first lens module comprises a first singlet lens for receiving a target light field carrying target information; or
The first lens module comprises a first cemented lens for receiving a target light field carrying target information; or
The first lens module comprises a first lens group, the first lens group comprises a plurality of lenses, and the plurality of lenses are sequentially arranged on a light path transmitted by the target light field according to a preset sequence and are used for receiving the target light field carrying target information.
In one embodiment, the second lens module comprises a second single lens, and the second single lens is arranged on the light path of the light ray emitted from the first reflection module; or
The second lens module comprises a second cemented lens which is arranged on a light path of the light rays emitted from the first reflection module; or
The second lens module comprises a second lens group, the second lens group comprises a plurality of lenses, and the plurality of lenses are sequentially arranged on a light path of emergent light rays from the first reflection module according to a preset sequence.
In one embodiment, the first single lens, the first cemented lens and/or the first lens group are made of a metamaterial, and the second single lens, the second cemented lens and/or the second lens group are made of a metamaterial.
The correlated imaging detection device transmits the electric signal carrying target information to the computing device, and the computing device computes the image of the target according to the electric signal.
The associated imaging detection device and the associated imaging detection system provided by the above embodiments may receive the target light field carrying the target information through the first lens module. The light emitted from the first lens module propagates along the first light path, the propagation direction of the first light path can be changed through the first reflection module, the light emitted from the first reflection module propagates along the second light path, and then the first reflection module changes the propagation direction of the target light field from propagating along the first light path to propagating along the second light path. The light emitted from the first reflection module is transmitted to the second reflection module along the second light path and through the second lens module on the second light path, the second reflection module can change the transmission direction of the second light path at least once, the transmission direction of the second light path is changed through the second reflection module, the light emitted from the second reflection module is transmitted to the spatial light modulation module along the third light path, and then the transmission direction of the target light field is changed from being transmitted along the second light path to being transmitted along the third light path. The light path of the target light field transmitted to the spatial light modulation module from the first lens module is folded through the first reflection module and the second reflection module, so that the distance of the target light field transmitted along the first light path and the distance of the target light field transmitted along the third light path are shortened, and the problem that the transmission light path is long due to the fact that the target light field is transmitted to the spatial light modulation module along the same light path after being incident from the first lens module can be solved. The associated imaging detection device and the associated imaging detection system provided by the above embodiment enable the associated imaging detection device to occupy a small space along the receiving light path and have a high space utilization rate by folding the light path of the target light field transmitted from the first lens module to the spatial light modulation module.
Drawings
Fig. 1 is a schematic view of a connection structure of an associated imaging detection apparatus according to an embodiment of the present application;
fig. 2 is a schematic view of a connection structure of an associated imaging detection apparatus according to an embodiment of the present application;
fig. 3 is a schematic view of a connection structure of an associated imaging detection apparatus according to an embodiment of the present application;
fig. 4 is a schematic view of an optical path structure of an associated imaging detection apparatus according to an embodiment of the present application;
fig. 5 is a schematic connection structure diagram of an associated imaging detection system according to an embodiment of the present application.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Referring to fig. 1, a conventional correlation imaging detection apparatus generally includes a first lens module 11, a second lens module 12, a spatial light modulation module 13, and a receiving module 14. The first lens module 11 is configured to receive a target light field carrying target information, and the target light field forms a first real image of a target after passing through the first lens module 11. The second lens module 12 is disposed on the light path of the light emitted from the first lens module 11 and configured to receive a first real image, the first real image forms a second real image of the target through the second lens module 12, and the second real image is conjugate to the first real image. The spatial light modulation module 13 is disposed on a light path of the light emitted from the second lens module 12, and is located on a plane where the second real image is located, and is configured to receive the second real image and perform spatial modulation on the second real image to form a modulated light field carrying information of the second real image. The receiving module 14 is disposed on a light path of the light emitted from the spatial light modulation module 13, and is configured to receive the modulated light field and convert the modulated light field into an electrical signal.
The existing related imaging detection device can form a first real image on one side of the emergent ray through the first lens module 11. The first real image is further imaged by the second lens module 12, that is, a second real image is formed on a side of the second lens module 12 away from the first real image, the second real image is conjugate to the first real image, and the spatial light modulation module 13 is disposed at a position of the second real image. Therefore, the property of the first real image is not changed by the second lens module 12, and the distance between the first lens module 11 and the spatial light modulation module 13 can be extended by the second lens module 12, so that when the first lens module 11 is used alone, the first lens module 11 blocks the light which is modulated by the spatial light modulation module 13 and then enters the receiving module 14, and the integrity of the electric signal carrying the target information and acquired by the associated imaging detection device 100 can be improved.
However, in the conventional associated imaging detection apparatus, a target light field is transmitted to the spatial light modulation module 13 through the second lens module 12 along a light path in the same transmission direction after being incident from the first lens module 11, a receiving light path for transmitting the target light field from the first lens module 11 to the spatial light modulation module 13 is long, and the first lens module 11, the second lens module 12 and the spatial light modulation module 13 occupy a larger space along the receiving light path, so that the space utilization rate is lower, and the application is limited.
Referring to fig. 2, the present application provides a correlation imaging detection apparatus. The correlated imaging detection device includes a first lens module 20, a first reflection module 30, a second lens module 40, a second reflection module 50, a spatial light modulation module 60, and a receiving module 70. The first lens module 20 is for receiving a target light field carrying target information. The first reflection module 30 is disposed on a light path of the light emitted from the first lens module 20, the light path of the light emitted from the first lens module 20 is a first light path 101, the first reflection module 30 is configured to change a propagation direction of the first light path 101, and the light path of the light emitted from the first reflection module 30 is a second light path 102. The second lens module 40 is disposed on a light path of the light emitted from the first reflective module 30, and the light path of the light emitted from the second lens module 40 is a second light path 102. The second reflective module 50 is disposed on the light path of the light emitted from the second lens module 40, and is configured to change the propagation direction of the second light path 102 at least once, and the light path of the light emitted from the second reflective module 50 is a third light path 103. The spatial light modulation module 60 is disposed on a light path of light emitted from the second reflection module 50, the target light field is transmitted to the spatial light modulation module 60 through the first light path 101, the second light path 102, and the third light path 103 in sequence, and the spatial light modulation module 60 is configured to perform spatial intensity modulation on the target light field to form a modulated light field. The receiving module 70 is disposed on the light path of the light emitted from the spatial light modulation module 60, and is configured to receive the modulated light field and convert the modulated light field into an electrical signal.
It is understood that the correlation imaging detection apparatus provided herein can be applied to an active illumination correlation imaging system. In the active illumination correlation imaging system, a light source module may be used to illuminate a target, and light is reflected by the target after being incident on a surface of the target to form a target light field of the first lens module 20, where the target light field carries target information that can be used for imaging the target. In one embodiment, the light source module may include a laser, and laser is used as an active illumination light source, which may improve the signal-to-noise ratio of the target light field of the first lens module 20, thereby improving the quality of the electrical signal obtained by the associated imaging detection device and improving the associated imaging effect. In one embodiment, the correlation imaging detection apparatus provided by the present application can also be applied to a passive illumination correlation imaging system. In the passive illumination associated imaging system, a light source module is not required to be arranged. The natural light is directed to the target and reflected by the target surface to form the target light field of the first lens module 20. Similarly, the target light field of the first lens module 20 in the passively illuminated correlated imaging system also carries target information that may be used for target imaging.
In one embodiment, the first lens module 20 includes a first singlet lens for receiving a target light field carrying target information. Alternatively, the first lens module 20 comprises a first cemented lens for receiving a target light field carrying target information. Alternatively, the first lens module 20 includes a first lens group, and the first lens group includes a plurality of lenses, and the plurality of lenses are sequentially disposed on the light path transmitted by the target light field according to a preset sequence, and are configured to receive the target light field carrying the target information.
The first reflection module 30 may receive the target light field output from the first lens module 20 and change a propagation direction of the target light field. In one embodiment, the first reflecting module 30 includes a first mirror or a first prism.
The second lens module 40 may receive the light emitted from the first reflection module 30, that is, the target light field output through the first reflection module 30, and the target light field propagates between the first reflection module 30 and the second reflection module 50 along the second light path 102, that is, the propagation direction of the light incident to the first lens module 20 is the same as the propagation direction of the light emitted from the first lens module 20. In one embodiment, the second lens module 40 includes a second single lens disposed on the optical path of the light emitted from the first reflective module 30. Alternatively, the second lens module 40 includes a second cemented lens disposed on the light path of the light emitted from the first reflection module 30. Alternatively, the second lens module 40 includes a second lens group including a plurality of lenses, and the plurality of lenses are sequentially disposed on the light path of the light emitted from the first reflection module 30 according to a preset sequence.
In one embodiment, the first single lens, the first cemented lens and/or the first lens group are made of a metamaterial, and the second single lens, the second cemented lens and/or the second lens group are made of a metamaterial.
It should be noted that the first single lens, the first cemented lens, the first lens group, the second single lens, the second cemented lens, and the second lens group do not have a one-to-one correspondence relationship, and can be combined arbitrarily, which is not limited by the drawings of the present application.
The second reflection module 50 may receive the target light field emitted from the second lens module 40 and change the propagation direction of the target light field, and the second reflection module 50 may change the propagation direction of the target light field multiple times, that is, the propagation direction of the second light path 102 is changed multiple times in the second reflection module 50, for example, sequentially changed to the second first light path, the second light path, the second third light path, …, and finally the light path of the light emitted from the second reflection module 50 is the third light path 103.
In one embodiment, the second reflecting module 50 comprises at least one second mirror, the propagation direction of the second light path 102 changes every time when passing through one second mirror, and the light path of the light emitted from the last second mirror is the third light path 103. Alternatively, the second reflection module 50 includes at least one second prism, the propagation direction of the second light path 102 changes every time when passing through one second prism, and the light path of the light exiting from the last second prism is the third light path 103.
The spatial light modulation module 60 may modulate a certain parameter of the light field by the spatial light modulation unit under active control. In one embodiment, the spatial light modulation module 60 can modulate the spatial intensity of the light field, so as to write the preset information into the light wave, thereby achieving the purpose of light wave modulation. The spatial light modulation module 60 may be disposed on the light path of the light emitted from the second reflection module 50, and performs spatial intensity modulation on the target light field to form a modulated light field. It is to be understood that the spatial light modulation device in the spatial light modulation module 60 is not particularly limited in the present application as long as it can output a modulated light field required for associated imaging according to a target light field. Specifically, the spatial light modulation module 60 may be a digital micromirror device, an acousto-optic deflector, or a metamaterial (which may be a light-manipulating metamaterial), etc. In one embodiment, the Spatial Light modulation module 60 may include a reflective Spatial Light Modulator (SLM).
In one embodiment, the spatial light modulation module 60 comprises a digital micro-mirror array disposed on the light path of the light emitted from the second reflective module 50 for performing spatial intensity modulation on the target light field to form a modulated light field. A digital micromirror array is a light modulation device consisting of an array of micron-sized aluminum mirrors, each micromirror having only two states, on and off (i.e., +12 and-12 degrees rotated about its diagonal), that modulate the amplitude of light specifically. In this embodiment, the target light field is incident on the digital micromirror array, and the digital micromirror array performs spatial intensity modulation on the target light field to form a modulated light field. In one embodiment, a preset number of micromirrors on the digital micromirror array may be flipped by +12 ° for each measurement, so that the modulated light is rotated by 24 ° and then emitted to the first reflective module 30. It can be understood that the digital micromirror array has the advantages of full digitalization and high image quality, and can realize precise amplitude modulation of a target light field, thereby ensuring the imaging quality of associated imaging.
In one embodiment, the digital micromirror array can be replaced with an absorptive modulator comprising a plurality of superconducting modules. The absorption modulator is disposed on the light path of the light emitted from the second reflection module 50, and is configured to perform spatial intensity modulation on the target light field to form a modulated light field, where the absorption modulator includes a superconducting material module. In one embodiment, the spatial light modulation module 60 may further include one of any spatial light modulators, such as a low temperature LCOS spatial light modulator, a reflective spatial light modulator, a transmissive spatial light modulator, and the like, and may adaptively adjust the optical path structure according to the type of the spatial light modulator. It should be noted that the type of the spatial light modulator included in the spatial light modulation module 60 is not specifically limited in the present application, and the spatial light modulator can perform spatial modulation on the target light field to form a modulated light field, which is all within the protection scope of the present application.
The receiving module 70 may be configured to receive a modulated light field, where the modulated light field includes required information that may be used for performing correlation imaging calculation, and the receiving module 70 may convert an optical signal carrying target information into an electrical signal, so that the computing device 80 electrically connected to the receiving module 70 may perform correlation imaging calculation according to the received electrical signal and the modulation signal sent by the control system, thereby obtaining an image of the target.
Referring to fig. 3, in one embodiment, the receiving module 70 includes a third lens module 71 and a detector 72. The third lens module 71 is disposed on the light path of the light emitted from the spatial light modulation module 60, and is used for converging the modulated light field. The detector 72 is disposed on a light path of the emergent light of the third lens module 71, and is configured to receive the converged modulated light field and convert the modulated light field into an electrical signal. It can be understood that the light reflected by the spatial light modulation module 60 has a certain divergence, and in order to ensure that the detector 72 can acquire all the light signals carrying the target information, the third lens module 71 can be arranged to converge and shape the modulated light field. The specific position of the third lens module 71, the number of lenses included therein, and parameters may be selected according to the position settings and models of the spatial light modulation module 60 and the detector 72, which is not limited in this application. In one embodiment, the third lens module 71 may include a converging lens, which is disposed on the optical path of the light emitted from the spatial light modulation module 60 and is used for converging the modulated light field to ensure the integrity of the target information acquired by the detector 72. In another embodiment, the third lens module 71 may further include a lens assembly, a single lens with a single aperture, a lens group, a plurality of cylindrical mirrors or a plurality of spherical mirrors, etc., as long as it can converge and shape the modulated light field.
In one embodiment, detector 72 may be a single pixel detector 72. The single-pixel detector 72 is suitable for an indirect imaging mode without the array detector 72, and the spatial light modulation module 60 can replace the detector 72 array in the traditional imaging scheme to acquire the light field intensity correlation information carrying the target information. It is understood that the spatial light modulation module 60 modulates the target light field to form a modulated light field, and the modulated light field passes through the third lens module 71, and can be all received by the single-pixel detector 72 and converted into an electrical signal. The single pixel detector 72 is connected to the computing device 80, and the computing device 80 can calculate (correlation operation or compressed sensing algorithm, etc.) the electrical signal carrying the target information and the modulation signal sent by the control system, so as to obtain the image of the target. Compared with the traditional geometric imaging mode, the single-pixel camera has the advantages of high sensitivity, low cost and the like when being used for associated imaging, and can be applied to the fields of remote sensing, investigation, geological exploration and the like. In another embodiment, the detector 72 may also be one of a Charge-coupled Device (CCD), a Complementary Metal Oxide Semiconductor (CMOS), and a multi-pixel photon Counter (MPPC), as long as it can meet the detection requirement of the associated imaging detection apparatus, that is, the spatial light modulation module 60 can be combined to obtain the light field intensity related information carrying the target information. It should be noted that the specific type of the detector 72 is not limited in this application, and it is within the scope of the present application as long as it can receive the converged modulated optical field and convert the modulated optical field into an electrical signal.
Referring to fig. 4, in one embodiment, the first lens module 20 includes a first single lens 21, the first reflection module 30 includes a first reflecting mirror 31, the second reflection module 50 includes a second reflecting mirror 51, the third lens module 71 includes a converging lens 711, the target light field forms a first real image 201 of the target through the first single lens 21, the first real image 201 is located on the first lens module 20 and the first reflecting mirror 31, the first real image 201 sequentially forms a second real image 202 of the target through the first reflecting mirror 31, the second lens module 40 and the second reflecting mirror 51, and the spatial light modulation module 60 is located on a plane where the second real image 202 is located, so that the properties of the first real image are not changed by the first single lens 21, the second lens module 40 and the second reflecting mirror 51.
Referring to fig. 5, based on the same inventive concept, the present application further provides a correlation imaging detection system, including any one of the correlation imaging detection devices in the above embodiments and a computing device 80, where the correlation imaging detection device transmits an electrical signal carrying target information to the computing device 80, and the computing device 80 computes an image of the target according to the electrical signal. It is understood that the associated imaging detection device may be any one of the associated imaging detection devices in the above embodiments, and details are not repeated herein. In one embodiment, the computing device 80 may include a control module and a signal processing module, and the control module and the signal processing module are electrically connected. The control module may serve as a control system of the associated imaging detection system, and may generate a modulation signal and send the modulation signal to the spatial light modulation module 60. The signal processing module can receive the electric signal which is output by the associated imaging detection device and carries the target information, and performs associated calculation by combining the modulation signal to obtain the image of the target. In one embodiment, the computing device 80 may be a micro-control unit or a computer, which may apply various related imaging algorithms or compressive sensing algorithms, etc. in the prior art to process the electrical signals output by the related imaging detection devices so as to obtain an image of the target. It can be understood that the implementation process of using the associated imaging algorithm or the compressive sensing algorithm to perform the operation on the modulation signal and the electrical signal may refer to the method in the existing literature, and is not described herein again.
The associated imaging detection apparatus and the associated imaging detection system provided in the above embodiments may receive the target light field carrying the target information through the first lens module 20. The light emitted from the first lens module 20 propagates along the first light path 101, the propagation direction of the first light path 101 can be changed by the first reflection module 30, the light emitted from the first reflection module 30 propagates along the second light path 102, and the first reflection module 30 changes the propagation direction of the target light field from propagating along the first light path 101 to propagating along the second light path 102. The light emitted from the first reflection module 30 propagates to the second reflection module 50 along the second light path 102 and through the second lens module 40 on the second light path 102, the second reflection module 50 can change the propagation direction of the second light path 102 at least once, the propagation direction of the second light path 102 is changed by the second reflection module 50, the light emitted from the second reflection module 50 propagates to the spatial light modulation module 60 along the third light path 103, and the propagation direction of the target light field is changed from propagating along the second light path 102 to propagating along the third light path 103. The optical path of the target light field transmitted from the first lens module 20 to the spatial light modulation module 60 is folded by the first reflection module 30 and the second reflection module 50, so that the distance of the target light field transmitted along the first optical path 101 and the distance of the target light field transmitted along the third optical path 103 are shortened, and the problem of long transmission optical path caused by the target light field transmitted to the spatial light modulation module 60 along the same optical path after being incident from the first lens module 20 can be solved. The associated imaging detection apparatus and the associated imaging detection system provided in the above embodiments fold the optical path of the target optical field transmitted from the first lens module 20 to the spatial light modulation module 60, so that the associated imaging detection apparatus occupies a small space along the receiving optical path and has a high space utilization rate.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An associative imaging detection apparatus, comprising:
a first lens module for receiving a target light field carrying target information;
the first reflection module is arranged on a light path of light emitted from the first lens module, the light path of light emitted from the first lens module is a first light path, the first reflection module is used for changing the propagation direction of the first light path, and the light path of light emitted from the first reflection module is a second light path;
the second lens module is arranged on a light path of the light emitted from the first reflection module, and the light path of the light emitted from the second lens module is a second light path;
the second reflection module is arranged on a light path of the light emitted from the second lens module and used for changing the propagation direction of the second light path at least once, and the light path of the light emitted from the second reflection module is a third light path;
the spatial light modulation module is arranged on a light path of light emitted from the second reflection module, the target light field is transmitted to the spatial light modulation module through the first light path, the second light path and the third light path in sequence, and the spatial light modulation module is used for performing spatial intensity modulation on the target light field to form a modulated light field;
and the receiving module is arranged on a light path of the emergent light of the spatial light modulation module and used for receiving the modulated light field and converting the modulated light field into an electric signal.
2. The correlated imaging detecting apparatus of claim 1, wherein said second reflecting module comprises at least one second mirror, the propagation direction of said second light path is changed every time passing through one second mirror, and the light path of the light emitted from the last second mirror is a third light path; or
The second reflection module comprises at least one second prism, the propagation direction of the second light path is changed once through the second prism, and the light path of the light emitted from the last second prism is a third light path.
3. The correlated imaging detection apparatus of claim 1, wherein said receiving module comprises:
the third lens module is arranged on a light path of light rays emitted from the spatial light modulation module and used for converging the modulated light field;
and the detector is arranged on a light path of the emergent light rays from the third lens module and used for receiving the converged modulated light field and converting the modulated light field into an electric signal.
4. The correlated imaging detection apparatus of claim 3, wherein said third lens module comprises a converging lens, said converging lens is disposed on the optical path of the light emitted from said spatial light modulation module for converging said modulated light field.
5. The correlated imaging detection apparatus of claim 3, wherein said detector is one of a single pixel detector, a charge coupled device, a complementary metal oxide semiconductor and a multi-pixel photon counter.
6. The correlated imaging detection apparatus of claim 1, wherein said spatial light modulation module comprises a digital micromirror array disposed on the light path of the light emitted from said second reflection module for performing spatial intensity modulation on said target light field to form a modulated light field; or
The spatial light modulation module comprises an absorption type modulator, the absorption type modulator is arranged on a light path of light rays emitted from the second reflection module and is used for carrying out spatial intensity modulation on the target light field to form a modulated light field, and the absorption type modulator comprises a superconducting material module.
7. The correlated imaging detection apparatus of claim 1, wherein said first lens module comprises a first single lens for receiving a target light field carrying target information; or
The first lens module comprises a first cemented lens for receiving a target light field carrying target information; or
The first lens module comprises a first lens group, the first lens group comprises a plurality of lenses, and the plurality of lenses are sequentially arranged on a light path transmitted by the target light field according to a preset sequence and are used for receiving the target light field carrying target information.
8. The correlated imaging detection apparatus of claim 7, wherein said second lens module comprises a second single lens, said second single lens being disposed on the optical path of the light exiting from said first reflection module; or
The second lens module comprises a second cemented lens which is arranged on a light path of the light rays emitted from the first reflection module; or
The second lens module comprises a second lens group, the second lens group comprises a plurality of lenses, and the plurality of lenses are sequentially arranged on a light path of emergent light rays from the first reflection module according to a preset sequence.
9. The correlated imaging detection apparatus of claim 8, wherein said first single lens, said first cemented lens and/or said first lens group is made of metamaterial, and said second single lens, said second cemented lens and/or said second lens group is made of metamaterial.
10. An associative imaging detection system comprising an associative imaging detection apparatus according to any one of claims 1 to 9 and a computing means, wherein said associative imaging detection apparatus transmits said electrical signal carrying information of an object to said computing means, and said computing means computes an image of said object from said electrical signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010523445.3A CN111551954A (en) | 2020-06-10 | 2020-06-10 | Associated imaging detection device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010523445.3A CN111551954A (en) | 2020-06-10 | 2020-06-10 | Associated imaging detection device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111551954A true CN111551954A (en) | 2020-08-18 |
Family
ID=72000729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010523445.3A Pending CN111551954A (en) | 2020-06-10 | 2020-06-10 | Associated imaging detection device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111551954A (en) |
-
2020
- 2020-06-10 CN CN202010523445.3A patent/CN111551954A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106441571B (en) | A kind of light source module and the line scanning multi-optical spectrum imaging system using it | |
| CN103472456B (en) | Active imaging system and method based on sparse aperture compressing calculation correlation | |
| CN101614593B (en) | Reflecting pyramid wave-front sensor | |
| CN105589210B (en) | A kind of digitlization synthetic aperture imaging method based on pupil modulation | |
| CN108712216A (en) | Space phase compensation system in orbital angular momentum optic communication and its method | |
| CN103398729B (en) | Compressed-sensing-based sparse aperture imaging system and method | |
| CN105116542A (en) | Dual field-of-view calculation correlated imaging system and method | |
| CN104019899A (en) | Ultrasensitive astronomical telescope and astronomical image acquisition method | |
| CN103091841A (en) | Two-tone infrared imaging guidance simulation optical system based on digital micromirror display (DMD) | |
| CN110646102A (en) | full-Stokes single photon compression polarization imaging device and method | |
| US20110062335A1 (en) | Detecting electromagnetic radiation | |
| CN111538033A (en) | Active illumination associated imaging emission system and active illumination associated imaging system | |
| CN212694044U (en) | Associated imaging detection device and system | |
| CN212694046U (en) | Associated imaging detection device and system | |
| CN107966872B (en) | Infrared dual-waveband optical engine based on double DMDs | |
| CN111624619A (en) | Active illumination associated imaging emission system and active illumination associated imaging system | |
| CN111610535A (en) | Active illumination-associated imaging system and active illumination-associated imaging method | |
| CN111551954A (en) | Associated imaging detection device and system | |
| CN111856502A (en) | Image forming apparatus and image forming system | |
| CN213544828U (en) | Active illumination associated imaging emission system and active illumination associated imaging system | |
| CN103558160A (en) | Method and system for improving resolution ratio of spectral imaging space | |
| CN103401609B (en) | Based on free-space optical communication system and the method for compressed sensing and sparse aperture | |
| CN212694043U (en) | Active illumination correlation imaging system | |
| CN212694045U (en) | Active illumination associated imaging emission system and active illumination associated imaging system | |
| CN111751840A (en) | Associated imaging detection device and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |