Multi-mode multi-view-field optical detection device

Abstract

The invention discloses a multi-mode multi-view-field optical detection device which comprises a rolling support and a rack which are coaxially distributed. And the pitching bracket is arranged at the end part of the rolling bracket through a pitching motor. The device further comprises a detection unit 1 and a detection unit 2. The detection unit 1 forms a detection light path through a primary mirror 1, a lens group 1 and a detector 1 in sequence, the primary mirror 1 is located near a rotation center shaft, a hole is formed in the center point of the primary mirror 1, and the diameter d of the hole and the diameter D of the primary mirror meet the condition that d is smaller than or equal to 40% * D. The detection unit 2 is composed of a primary mirror 2, a reflecting mirror 1, a reflecting mirror 2, a lens group 2 and a detector 2, the primary mirror 2 is arranged inside or outside a central hole of the primary mirror 1, and incident light is transmitted to the lens group 2 and the detector 2 through the primary mirror 2, the reflecting mirror 1 and the reflecting mirror 2. Two detection units are arranged by fully utilizing a hole in the center of the primary mirror, so that the energy receiving requirement of the detection unit 1 is ensured, and the requirements of visible light imaging detection and laser ranging are also met.

Description

Technical Field

[0001] The present invention belongs to the field of detection technology, and in particular relates to a multi-mode and multi-field-of-view optical detection device. Background Art

[0002] The guidance device is usually installed at the front end of the mobile carrier to measure the key motion parameters of the target such as image size and azimuth in real time, and generate guidance information based on this to accurately guide the carrier to the designated target. This type of device receives the energy radiated or reflected by the target (such as infrared, laser or radio waves), determines the relative position information of the target relative to the carrier, and forms corresponding guidance instructions. The effectiveness of the guidance system is highly dependent on the performance of the guidance device, especially in terms of high precision and fast response.

[0003] In the prior art, there are some solutions that attempt to solve the problem of switching between large field of view and small field of view: China's authorized invention patent CN201911098004.7 proposes an optical system with scanning function, which changes the optical path by inserting or removing a reflector in the optical path of the Cassegrain telescope, realizing the switch between the refracting telescope and the reflecting telescope, thereby completing the conversion between the large field of view scanning system and the small field of view Cassegrain system. However, although this method is feasible, it cannot maintain the existence of large and small fields of view at the same time, and can only select one field of view mode to work at a time, which limits the real-time and versatility of the system.

[0004] China's authorized patent CN202210463986.0 describes a common-aperture multi-field optical system that uses the unobstructed area at the edge of the Cassegrain primary mirror to achieve a medium-wave infrared large-field short-focus system, and uses the obstructed Cassegrain primary optical path to achieve a small-field long-focus system. This design allows the two optical systems to be used alternately to meet different needs. Although the problem of switching between large and small fields of view within a single band has been solved, it is still limited to single-band operation and cannot provide true multi-mode detection capabilities, that is, simultaneous processing of visible light and infrared light.

[0005] Both of the above solutions fail to achieve the coexistence and simultaneous operation of large field of view systems and small field of view systems, nor can they support multi-modal detection. In particular, when trying to simultaneously meet the refraction requirements of visible light and medium-wave / long-wave infrared, the optical path design places extremely high bandwidth requirements, which increases the difficulty of lens material selection.

[0006] The inventor's patent application CN202410616422.5 attempts to achieve the simultaneous existence of large and small fields of view through the design of an offset beam splitter, but encounters challenges in material selection in practical applications because it is necessary to find a material that can meet the refractive properties of visible light and infrared light at the same time over a wide bandwidth.

[0007] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0008] The object of the present invention is to provide a multi-mode and multi-field-of-view optical detection device, so as to overcome the above-mentioned defects in the prior art.

[0009] To achieve the above-mentioned purpose, the present invention discloses a multi-mode multi-field-of-view optical detection device, comprising a coaxially distributed rolling bracket and a frame, a rolling motor is arranged between the rolling bracket and the frame, so that the rolling bracket rotates and scans around the central axis; the pitch bracket is arranged at the end of the rolling bracket through the pitch motor, and the pitch motor drives the pitch bracket to scan around the pitch axis; Also includes a detection unit 1 and a detection unit 2; The detection unit 1 mainly consists of a main mirror 1, a lens group 1 and a detector 1 in sequence to form a detection optical path; the main mirror 1 is located near the rotation center axis of the rolling bracket, and a hole is provided at the center point of the main mirror 1, wherein the main mirror diameter D and the hole diameter d satisfy d≦40%*D; The detection unit 2 is mainly composed of a primary mirror 2, a reflector 1, a reflector 2, a lens group 2 and a detector 2, which form a configuration-1; The main mirror-2 of the detection unit-2 is arranged inside or outside the hole in the center of the main mirror-1, and the incident light beam is transmitted to the lens group-2 and the detector-2 through the main mirror-2, the reflector-1 and the reflector-2; At this time, the main mirror 2, the adjustment mirror group, the reflector 1, the reflector 2, the lens group 2 and the detector 2 of the detection unit 2 are all arranged on the pitch bracket.

[0010] Alternatively, the primary mirror 2, the adjustment mirror group, and the reflector 1 of the detection unit 2 are arranged on a pitch bracket, and the reflector 2, the lens group 2, and the detector 2 are arranged on a roll bracket.

[0011] Further preferably, the detection unit 2 is a configuration-2 consisting of a reflector 1, a reflector 2, a lens group 2 and a detector 2; When the detection unit is in configuration-2, the reflector-1 of the detection unit-2 is arranged inside the hole in the center of the primary mirror 1, and the incident light beam passes through the hole of the primary mirror 1 and is transmitted to the lens group-2 and the detector-2 via the reflector-1 and the reflector-2; wherein the reflector-1 and the reflector-2 are sequentially arranged near the axis of the pitch axis; At this time, the detection unit-2 reflector-1, reflector-2, lens group-2 and detector-2 are all arranged on the pitch bracket; Alternatively, the reflector-1 of the detection unit-2 is arranged on the pitch bracket, while the reflector-2, the lens group-2 and the detector-2 are arranged on the roll bracket, wherein the center line of the light beam between the reflector-1 and the reflector-2 is parallel to and coincides with the extension line of the pitch axis.

[0012] Further preferably, the detection unit 2 is a configuration-3 consisting of a lens group 2 and a detector 2; when the detection unit is configuration-3, the lens group 2 of the detection unit-2 is located inside the hole in the center of the primary mirror 1, and the incident light beam passes through the hole in the primary mirror 1 and is transmitted to the lens group-2 and the detector-2.

[0013] Further preferably, the light spot corresponding to the detection unit 2 is located in the middle position of the primary mirror 1 of the detection unit 1. The detection unit 1 preferably corresponds to the medium-wave infrared or long-wave infrared band.

[0014] Further preferably, the detection unit 1 detects the field of view angle α-1 as a small field of view detection unit, and the detection unit 2 detects the field of view angle α-2 as a large field of view detection unit, the imaging light path of the field of view angle α-1 of the detection unit 1 is composed of the main mirror 1 and the lens group 1, and the field of view angle α-1 ranges from 1.5° to 35°; the imaging light path of the field of view angle α-2 of the detection unit 2 is composed of the reflector 1, the reflector 2 and the lens group 2, and the field of view angle α-2 ranges from 1.5° to 50°.

[0015] Further preferably, the detection unit 1 and the detection unit 2 are respectively a combination of medium-wave infrared and visible light, or a combination of long-wave infrared and visible light, and a combination of medium-wave infrared and laser, or long-wave infrared and laser to achieve dual-mode dual-field-of-view detection.

[0016] A multi-field optical detection device comprises a coaxially distributed rolling bracket and a frame, wherein a rolling motor is arranged between the rolling bracket and the frame, so that the rolling bracket rotates and scans around a central axis; a pitch bracket is arranged at an end of the rolling bracket through a pitch motor, and the pitch motor drives the pitch bracket to scan around the pitch axis; and further comprises: a detection unit 1 and a detection unit 2;

[0017] The detection unit 1 mainly comprises a primary mirror 1, a lens group 1 and a detector 1 in sequence to form a detection optical path; the primary mirror 1 is located near the rotation center axis of the rolling bracket, and a hole is provided at the center point thereof, and the hole diameter d satisfies d≦40%*D; The detection unit 2 is a configuration-1 consisting of a main mirror 2, a reflector 1, a reflector 2, a lens group 2 and a detector 2; The main mirror-2 of the detection unit-2 is arranged inside or outside the hole in the center of the main mirror-1, and the incident light beam is transmitted to the lens group-2 and the detector-2 through the main mirror-2, the reflector-1 and the reflector-2; the main mirror-2, the reflector-1, the lens group-2 and the detector-2 are arranged on the pitch bracket, and are driven by the pitch motor to deflect. Alternatively, the main mirror-2 and the reflector-1 are arranged on the pitch bracket, and the reflector-2, the lens group-2 and the detector-2 are arranged on the rolling bracket.

[0018] The detection unit-3 comprises: a reflector-3, a reflector-4, a lens group 3 and a detector 3 arranged on a rolling bracket; the reflector-3 is arranged in front of the hole of the main mirror-1 of the detection unit 1, and the projection diameter d1 of the reflector-3 on the main mirror-1 satisfies d1≦45%*D; The reflector-3 is a semi-reflector which has the function of reflecting the light beam in the wavelength band where the detection unit-3 is located and transmitting the light beam in the wavelength band where the detection unit-2 is located.

[0019] Further preferably, the detection unit 2 is a configuration-2 consisting of a reflector 1, a reflector 2, a lens group 2 and a detector 2; When the detection unit is configuration-2, the reflector-1 of the detection unit-2 is arranged on the inner side of the hole in the center of the primary mirror 1, and the incident light beam passes through the hole of the primary mirror 1, and is transmitted to the lens group-2 and the detector-2 via the reflector-1 and the reflector-2; the reflector 1 is arranged on the pitch bracket and the reflector 2, the lens group 2 and the detector 2 are arranged on the roll bracket.

[0020] The reflector 1 and the reflector 2 are sequentially arranged near the axis of the pitch axis, and the center line of the light beam between the reflector 1 and the reflector 2 is parallel to and coincides with the extension line of the pitch axis.

[0021] Or the detection unit 2 is a configuration-3 consisting of a lens group 2 and a detector 2, wherein the lens group-2 of the detection unit-2 is arranged inside the hole at the center of the primary mirror 1, and the incident light beam passes through the hole of the primary mirror 1 to reach the lens group-2.

[0022] Further preferably, the light spots corresponding to the detection unit 2 and the detection unit 3 are located in the middle position of the primary mirror 1 of the detection unit 1; the detection unit 1 preferably corresponds to the medium-wave infrared or long-wave infrared band.

[0023] Further preferably, the detection unit 1 detects the field of view angle α-1 as a small field of view detection unit, the detection unit 3 detects the field of view angle β as a small field of view detection unit, and the detection unit 2 detects the field of view angle α-2 as a large field of view detection unit; The imaging light path for the detection field angle α-2 of the detection unit 2 and the field angle α-1 of the detection unit 1 is composed of the main mirror 1 and the lens group 1, and the field angle α-1 ranges from 1.5° to 35°; the imaging light path for the field angle α-2 of the detection unit 3 is composed of the reflector-3, the reflector-4 and the lens group 3, and the field angle β ranges from 1.5° to 8°; the imaging light path for the field angle α-2 of the detection unit 2 is composed of the reflector 1, the reflector 2 and the lens group 2, and the field angle α-2 ranges from 1.5° to 50°.

[0024] Further preferably, the detection unit 1, the detection unit 2 and the detection unit 3 are respectively medium-wave infrared, single-wavelength laser and visible light, or a combination of long-wave infrared, single-wavelength laser and visible light to achieve multi-mode and multi-field-of-view detection.

[0025] Further preferably, it also includes an image processing board arranged on the pitch bracket or the roll bracket and rotating therewith, and the signals of the detector 1 and the detector 2 are transmitted to the image processing board through the merge ring and then transmitted to the main control board.

[0026] Further preferably, the image processing board may also be fixed on the frame or the housing.

[0027] Compared with the prior art, the present invention has the following beneficial effects: ① It can realize the imaging requirements of multi-mode beams in a narrow space similar to the seeker, meeting the imaging requirements of 450nm-650nm visible light, as well as medium-wave infrared (3-5μm) and / or long-wave infrared (8-12μm); ② The infrared band is allocated as detection unit 1, which reduces the design difficulty and enables the existing infrared materials to meet the requirements of infrared field of view and the requirement of large lens diameter for infrared energy detection, thus achieving the goal of coexistence of large and small fields of view; The visible light band is allocated to the detection unit 2 or the detection unit 3, and the refractive optical system is used to process the visible light band, which can reduce the design difficulty and the requirement for the bandwidth of the optical system. At the same time, the characteristics of the visible light detection, such as large field angle ratio and low requirement for lens diameter, are fully utilized to reduce the volume of the device to a limited extent. ③ Set the primary mirror-1, primary mirror-2 and reflector-1 on the pitch axis at the same time and rotate them by the pitch motor to achieve pitch angle (0-90°) scanning, while other optical path components are fixed to the rolling bracket and rotated 360° around the central axis by the rolling bracket. The combination of the two can achieve scanning detection of the hemispherical area of ​​the external space;

[0028] ④ Using the hole in the center of the main mirror, reflector-1 and reflector-3 are set, and reflector-3 has both reflection and transmission functions, making full use of a hole in the center of the main mirror to set up two detection units, which not only ensures the energy reception requirements of detection unit 1, but also realizes the requirements of visible light imaging detection of detection unit 3 and laser ranging of detection unit 2;

[0029] ⑤ The visible light cameras and laser ranging modules sold on the market can be directly used in this case, so as to achieve three-mode simultaneous detection and simplify the design of this case, reducing the implementation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1a This is a schematic diagram of the installation of the detection unit 2 configuration 1 of Example 1; Figure 1b This is a schematic diagram of the installation of the detection unit 2 configuration 1 of Example 1; Figure 1c This is a schematic diagram of the installation of the detection unit 2 configuration 2 of Example 1; Figure 1d This is a schematic diagram of the installation of the detection unit 2 configuration 2 of Example 1; Figure 1e This is a schematic diagram of the installation of the detection unit 2 configured with 3 in Example 1; Figure 1f This is a schematic diagram of the installation of the detection unit 2 configuration 1 of Example 2; Figure 1g This is a schematic diagram of the installation of the detection unit 2 configuration 2 of Example 2; Figure 1h This is a schematic diagram of the installation of the detection unit 2 configured with 3 in Example 2; Figure 2 This is a schematic diagram of the structure of the detection unit 3 in Example 2. DETAILED DESCRIPTION

[0031] The specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0032] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0033] Example 1 Overall structure overview This embodiment provides a multi-mode multi-field optical detection device, which mainly includes a coaxially distributed rolling bracket and a frame, a rolling motor is arranged between the rolling bracket and the frame, and the rolling motor can drive the rolling bracket to rotate and scan around the central axis. The pitch bracket is installed at the end of the rolling bracket through the pitch motor, and the pitch motor drives the pitch bracket to scan around the pitch axis. In addition, the device also includes a detection unit 1 and a detection unit 2.

[0034] Detection unit 1 structure and optical path The detection unit 1 is mainly composed of a primary mirror 1, a lens group 1 and a detector 1 arranged in sequence to form a detection optical path. The primary mirror 1 is located near the rotation center axis of the rolling bracket. A hole is provided at the center point of the primary mirror 1. The diameter of the primary mirror is D, the diameter of the hole is d, and d ≤ 40% * D. The detection unit 1 corresponds to the medium-wave infrared or long-wave infrared band. Its detection field of view angle α - 1 is a small field of view detection unit. The imaging optical path of the α - 1 field of view angle is composed of the primary mirror 1 and the lens group 1. The field of view angle α - 1 ranges from 1.5° to 35°.

[0035] 3. Different configurations and optical paths of detection unit 2 1. Configuration - 1 When the detection unit 2 adopts configuration - 1, it is mainly composed of a primary mirror 2, a reflector 1, a reflector 2, a lens group 2 and a detector 2. The primary mirror 2 is arranged inside or outside the hole in the center of the primary mirror 1, and the incident light beam passes through the primary mirror 2, and is transmitted to the lens group 2 and the detector 2 through the reflector 1 and the reflector 2.

[0036] Installation method 1: The main mirror 2, adjustment mirror group, reflector 1, reflector 2, lens group 2 and detector 2 of the detection unit 2 are all set on the pitch bracket. Figure 1a ) Installation method 2: The main mirror 2, adjustment mirror group, and reflector 1 of the detection unit 2 are set on the pitch bracket, and the reflector 2, lens group 2, and detector 2 are set on the roll bracket. Figure 1b ) (Such a setting can reduce the weight of the components carried by the pitch bracket, reduce the load of the pitch motor, and increase the acceleration of the pitch motor deflection); (II) Configuration - 2 When the detection unit 2 adopts configuration - 2, it is composed of reflector 1, reflector 2, lens group 2 and detector 2. Reflector 1 is arranged inside the hole in the center of primary mirror 1, and the incident light beam passes through the hole of primary mirror 1 and is transmitted to lens group 2 and detector 2 through reflector 1 and reflector 2, wherein reflector 1 and reflector 2 are sequentially arranged near the axis of the pitch axis.

[0037] Installation method 1: The reflector 1, reflector 2, lens group 2 and detector 2 of the detection unit 2 are all set on the pitch bracket. Figure 1c ) Installation method 2: The reflector 1 of the detection unit 2 is set on the pitch bracket, the reflector 2, the lens group 2 and the detector 2 are set on the roll bracket, and the center line of the light beam between the reflector 1 and the reflector 2 is parallel to and coincides with the extension line of the pitch axis. ( Figure 1d ), wherein the center line of the light beam between reflector 1 and reflector 2 is parallel to and coincides with the extension line of the pitch axis; (such an arrangement reduces the weight of the device carried by the pitch bracket, reduces the load of the pitch motor, and achieves the purpose of lifting the pitch motor).

[0038] (III) Configuration - 3 When the detection unit 2 adopts configuration - 3, it is composed of lens group 2 and detector 2. Lens group 2 is located inside the hole in the center of primary mirror 1, and the incident light beam passes through the hole of primary mirror 1 and is transmitted to lens group 2 and detector 2.

[0039] The light spot corresponding to the detection unit 2 is located in the middle position of the primary mirror 1 of the detection unit 1. Its detection field angle α-2 is a large field detection unit. The imaging light path of the α-2 field angle is composed of reflector 1, reflector 2 and lens group 2. The range of the field angle α-2 is 1.5° - 50°.

[0040] 4. Dual-mode dual-field detection combination Detection unit 1 and detection unit 2 can be a combination of medium-wave infrared and visible light, or long-wave infrared and visible light, and a combination of medium-wave infrared and laser, or long-wave infrared and laser, respectively, so as to achieve dual-mode dual-field detection.

[0041] 5. Signal Processing and Transmission The optical detection device also includes an image processing board, and there are multiple options for the installation position of the image processing board: Follow-up installation: The image processing board can be installed on the pitch bracket or the roll bracket and rotate with it. The signals of detector 1 and detector 2 are transmitted to the image processing board through the merge ring, and then transmitted to the main control board by the image processing board.

[0042] Fixed installation: The image processing board can also be fixed on a rack or housing.

[0043] Example 2 1. Overview of the overall structure This embodiment introduces a multi-mode and multi-field-of-view optical detection device, which has multi-mode and multi-field-of-view detection capabilities and is mainly composed of a roll bracket, a frame, a pitch bracket, a detection unit 1, a detection unit 2 and a detection unit 3.

[0044] The roll bracket and the frame are coaxially distributed, and a roll motor is installed between the roll bracket and the frame, and the roll motor drives the roll bracket to rotate and scan around the central axis. The pitch bracket is arranged at the end of the roll bracket through the pitch motor, and the pitch motor drives the pitch bracket to scan around the pitch axis.

[0045] 2. Detection unit 1 structure and optical path The detection unit 1 is composed of a primary mirror 1, a lens group 1 and a detector 1 arranged in sequence to form a detection optical path. The primary mirror 1 is located near the rotation center axis of the rolling bracket, and a hole is provided at the center point of the primary mirror 1. Assuming that the diameter of the primary mirror is D and the diameter of the hole is d, d ≤ 40% * D is satisfied. The detection unit 1 corresponds to the medium-wave infrared or long-wave infrared band, and its detection field of view angle α - 1 belongs to a small field of view detection unit. The imaging optical path of the α - 1 field of view angle is composed of the primary mirror 1 and the lens group 1, and the field of view angle α - 1 ranges from 1.5° to 35°.

[0046] 3. Different configurations and optical paths of detection unit 2 1. Configuration - 1 When the detection unit 2 adopts configuration - 1, it is composed of primary mirror 2, reflector 1, reflector 2, lens group 2 and detector 2. Primary mirror 2 can be set inside or outside the hole in the center of primary mirror 1. The incident light beam first passes through primary mirror 2, and then is transmitted to lens group 2 and detector 2 through reflector 1 and reflector 2. ( Figure 1f ) Installation method 1: The primary mirror 2, the reflector 1, the lens group 2 and the detector 2 are all arranged on the pitch bracket and driven by the pitch motor to deflect.

[0047] Installation method 2: The primary mirror 2 and the reflector 1 are arranged on the pitch bracket, while the reflector 2, the lens group 2 and the detector 2 are arranged on the roll bracket.

[0048] (II) Configuration - 2 When the detection unit 2 is in configuration - 2, it is composed of reflector 1, reflector 2, lens group 2 and detector 2. Reflector 1 is set inside the hole in the center of primary mirror 1. After the incident light beam passes through the hole of primary mirror 1, it is transmitted to lens group 2 and detector 2 through reflector 1 and reflector 2. Reflector 1 is set on the pitch bracket, and reflector 2, lens group 2 and detector 2 are set on the rolling bracket, wherein reflector 1 and reflector 2 are arranged in sequence near the axis of the pitch axis, and the center line of the light beam between reflector 1 and reflector 2 is parallel to and coincides with the extension line of the pitch axis. ( Figure 1g ) (III) Configuration - 3 When the detection unit 2 adopts configuration-3, it is composed of lens group 2 and detector 2.

[0049] The detection field angle α - 2 of the detection unit 2 is a large field detection unit. The imaging light path of the field angle α - 2 is composed of reflector 1, reflector 2 and lens group 2. The field angle α - 2 ranges from 1.5° to 50°. The light spot corresponding to the detection unit 2 is located in the middle of the main mirror 1 of the detection unit 1. ( Figure 1h ) 4. Detection unit 3 structure and optical path The detection unit 3 includes a reflector-3, a reflector-4, a lens group 3 and a detector 3 arranged on a rolling bracket. The reflector-3 is arranged on the front side of the hole of the main mirror-1 of the detection unit 1, and the projection diameter of the reflector-3 on the main mirror-1 is d1, satisfying d1 ≤ 45% * D. The reflector-3 is a semi-reflector that reflects the light beam in the band of the detection unit-3 and transmits the light beam in the band of the detection unit-2. The detection field angle β of the detection unit 3 is a small field detection unit, and its imaging optical path is composed of the reflector-3, the reflector-4 and the lens group 3, and the field angle β ranges from 1.5° to 8°. The light spot corresponding to the detection unit 3 is also located in the middle position of the main mirror 1 of the detection unit 1. ( Figure 2 ) 5. Multimodal Combination Detection unit 1, detection unit 2 and detection unit 3 can respectively use a combination of medium-wave infrared, single-wavelength laser and visible light, or a combination of long-wave infrared, single-wavelength laser and visible light to achieve multi-mode and multi-field-of-view detection functions.

[0050] 6. Signal Processing and Transmission The optical detection unit is also equipped with an image processing board, which can be installed flexibly: Follow-up installation: The image processing board can be installed on the pitch bracket or the roll bracket and rotate with it. The signals of detector 1 and detector 2 are transmitted to the image processing board through the merge ring, and then the image processing board transmits the processed signals to the main control board.

[0051] Fixed installation: The image processing board can also be fixed on a rack or housing.

[0052] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the claims and their equivalents.

Claims

1. A multi-mode and multi-field optical detection device, comprising a coaxially distributed rolling bracket and a frame, a rolling motor is arranged between the rolling bracket and the frame, so that the rolling bracket rotates around the central axis to scan; a pitch bracket is arranged at the end of the rolling bracket through a pitch motor, and the pitch motor drives the pitch bracket to scan around the pitch axis; Features: Also includes a detection unit 1 and a detection unit 2; The detection unit 1 mainly consists of a main mirror 1, a lens group 1 and a detector 1 in sequence to form a detection optical path; the main mirror 1 is located near the rotation center axis of the rolling bracket, and a hole is provided at the center point of the main mirror 1, wherein the main mirror diameter D and the hole diameter d satisfy d≦40%*D; The detection unit 2 is mainly composed of a primary mirror 2, a reflector 1, a reflector 2, a lens group 2 and a detector 2, which form a configuration-1; The main mirror-2 of the detection unit-2 is arranged inside or outside the hole in the center of the main mirror-1, and the incident light beam is transmitted to the lens group-2 and the detector-2 through the main mirror-2, the reflector-1 and the reflector-2; At this time, the primary mirror 2, the reflector 1, the reflector 2, the lens group 2 and the detector 2 of the detection unit 2 are all arranged on the pitch bracket; Alternatively, the primary mirror 2 and the reflector 1 of the detection unit 2 are arranged on a pitch bracket, and the reflector 2, the lens group 2 and the detector 2 are arranged on a roll bracket.

2. The multi-mode multi-field-of-view optical detection device according to claim 1, characterized in that: Or the detection unit 2 is a configuration-2 consisting of a reflector 1, a reflector 2, a lens group 2 and a detector 2; When the detection unit is in configuration-2, the reflector-1 of the detection unit-2 is arranged inside the hole in the center of the primary mirror 1, and the incident light beam passes through the hole of the primary mirror 1 and is transmitted to the lens group-2 and the detector-2 via the reflector-1 and the reflector-2; wherein the reflector-1 and the reflector-2 are sequentially arranged near the axis of the pitch axis; At this time, the detection unit-2 reflector-1, reflector-2, lens group-2 and detector-2 are all arranged on the pitch bracket; Alternatively, the reflector-1 of the detection unit-2 is arranged on the pitch bracket, while the reflector-2, the lens group-2 and the detector-2 are arranged on the roll bracket, wherein the center line of the light beam between the reflector-1 and the reflector-2 is parallel to and coincides with the extension line of the pitch axis.

3. The multi-mode multi-field-of-view optical detection device according to claim 1, characterized in that: Or the detection unit 2 is a configuration-3 consisting of a lens group 2 and a detector 2; When the detection unit is configured as configuration-3, the lens group 2 of the detection unit-2 is located inside the hole in the center of the primary mirror 1, and the incident light beam passes through the hole in the primary mirror 1 and is transmitted to the lens group-2 and the detector-2.

4. The multi-mode multi-field-of-view optical detection device according to claim 1, 2 or 3, characterized in that: The light spot corresponding to the detection unit 2 is located in the middle position of the primary mirror 1 of the detection unit 1; the detection unit 1 corresponds to the medium-wave infrared or long-wave infrared band.

5. The multi-mode multi-field-of-view optical detection device according to claim 1, characterized in that: The detection unit 1 has a small field of view angle α-1, and the detection unit 2 has a large field of view angle α-2. The imaging light path of the α-1 field of view angle of the detection unit 1 is composed of the main mirror 1 and the lens group 1, and the field of view angle α-1 ranges from 1.5° to 35°; the imaging light path of the α-2 field of view angle of the detection unit 2 is composed of the reflector 1, the reflector 2 and the lens group 2, and the field of view angle α-2 ranges from 1.5° to 50°.

6. The multi-mode multi-field-of-view optical detection device according to claim 1, characterized in that: Detection unit 1 and detection unit 2 are respectively a combination of medium-wave infrared and visible light, or long-wave infrared and visible light, and a combination of medium-wave infrared and laser, or long-wave infrared and laser to achieve dual-mode dual-field detection.

7. A multi-mode and multi-field optical detection device, comprising a coaxially distributed rolling bracket and a frame, a rolling motor is arranged between the rolling bracket and the frame, so that the rolling bracket rotates and scans around the central axis; the pitch bracket is arranged at the end of the rolling bracket through the pitch motor, and the pitch motor drives the pitch bracket to scan around the pitch axis; characterized in that: Also includes a detection unit 1 and a detection unit 2; The detection unit 1 mainly comprises a primary mirror 1, a lens group 1 and a detector 1 in sequence to form a detection optical path; the primary mirror 1 is located near the rotation center axis of the rolling bracket, and a hole is provided at the center point thereof, and the hole diameter d satisfies d≦40%*D; The detection unit 2 is a configuration-1 consisting of a main mirror 2, a reflector 1, a reflector 2, a lens group 2 and a detector 2; The main mirror-2 of the detection unit-2 is arranged inside or outside the hole in the center of the main mirror-1, and the incident light beam is transmitted to the lens group-2 and the detector-2 through the main mirror-2, the reflector-1 and the reflector-2; the main mirror 2, the reflector 1, the lens group 2 and the detector 2 are arranged on the pitch bracket, and are driven by the pitch motor to deflect; or the main mirror 2 and the reflector 1 are arranged on the pitch bracket, and the reflector 2, the lens group 2 and the detector 2 are arranged on the rolling bracket; The detection unit-3 comprises: a reflector-3, a reflector-4, a lens group 3 and a detector 3 arranged on a rolling bracket; the reflector-3 is arranged in front of the hole of the main mirror-1 of the detection unit 1, and the projection diameter d1 of the reflector-3 on the main mirror-1 satisfies d1≦45%*D; The reflector-3 is a semi-reflector which has the function of reflecting the light beam in the wavelength band of the detection unit-3 and transmitting the light beam in the wavelength band of the detection unit-2.

8. The multi-mode and multi-field-of-view optical detection device according to claim 7, characterized in that: Or the detection unit 2 is a configuration-2 consisting of a reflector 1, a reflector 2, a lens group 2 and a detector 2; When the detection unit is in configuration-2, the reflector-1 of the detection unit-2 is arranged inside the hole in the center of the primary mirror-1, and the incident light beam passes through the hole of the primary mirror-1, and is transmitted to the lens group-2 and the detector-2 via the reflector-1 and the reflector-2; the reflector-1 is arranged on the pitch bracket, and the reflector-2, the lens group-2 and the detector-2 are arranged on the roll bracket; Wherein, the reflector 1 and the reflector 2 are sequentially arranged near the axis of the pitch axis, and the center line of the light beam between the reflector 1 and the reflector 2 is parallel to and coincides with the extension line of the pitch axis; Or the detection unit 2 is a configuration-3 consisting of a lens group 2 and a detector 2, wherein the lens group-2 of the detection unit-2 is arranged inside the hole at the center of the primary mirror 1, and the incident light beam passes through the hole of the primary mirror 1 to reach the lens group-2.

9. The multi-mode and multi-field-of-view optical detection device according to claim 7, characterized in that: The light spots corresponding to the detection units 2 and 3 are located in the middle of the primary mirror 1 of the detection unit 1; the detection unit 1 corresponds to the medium-wave infrared or long-wave infrared band.

10. The multi-mode multi-field-of-view optical detection device according to claim 7, characterized in that: The detection unit 1 has a detection field angle of α-1, which is a small field detection unit; the detection unit 3 has a detection field angle of β, which is a small field detection unit; the detection unit 2 has a detection field angle of α-2, which is a large field detection unit; The imaging light path for the detection field angle α-2 of the detection unit 2 and the field angle α-1 of the detection unit 1 is composed of the main mirror 1 and the lens group 1, and the field angle α-1 ranges from 1.5° to 35°; the imaging light path for the field angle α-2 of the detection unit 3 is composed of the reflector-3, the reflector-4 and the lens group 3, and the field angle β ranges from 1.5° to 8°; the imaging light path for the field angle α-2 of the detection unit 2 is composed of the reflector 1, the reflector 2 and the lens group 2, and the field angle α-2 ranges from 1.5° to 50°.

11. The multi-mode and multi-field-of-view optical detection device according to claim 7, characterized in that: The detection unit 1 , the detection unit 2 and the detection unit 3 are respectively medium-wave infrared, single-wavelength laser and visible light, or a combination of long-wave infrared, single-wavelength laser and visible light.

12. The multi-mode multi-field-of-view optical detection device according to claim 1 or 7, characterized in that: It also includes an image processing board that is arranged on the pitch bracket or the roll bracket and rotates therewith. The signals of the detector 1 and the detector 2 are transmitted to the image processing board through the merge ring and then transmitted to the main control board.

13. The multi-mode multi-field-of-view optical detection device according to claim 12, characterized in that: The image processing board can also be fixed on a rack or a housing.

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