CN215218016U - Off-axis target simulator for multi-spectral band composite photoelectric equipment focusing and axis adjustment - Google Patents
Off-axis target simulator for multi-spectral band composite photoelectric equipment focusing and axis adjustment Download PDFInfo
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Abstract
The utility model discloses a multi-spectral-band composite photoelectric equipment focusing is transferred and is used off-axis target simulator. The off-axis target simulator includes: the device comprises an attenuation sheet, an off-axis primary mirror, a light path deflection reflector set, a beam splitter mirror assembly, an imaging camera assembly, a target and an illumination assembly; the illumination component is suitable for illuminating the target, light rays of the target enter the light path turning reflector group after being reflected by the spectroscope component, enter the off-axis primary mirror after being reflected for multiple times by the light path turning reflector group, and then are reflected to the attenuation sheet by the off-axis primary mirror; the off-axis primary mirror is suitable for focusing parallel light rays, the target is located on a focusing surface of the off-axis primary mirror, the spectroscope component is used for realizing half reflection and half permeation of visible light and laser wave bands and reflection of infrared wave bands, and the light rays transmitted by the spectroscope component are suitable for being incident to the imaging camera component. The utility model discloses can provide stable, reliable visible light, laser, infrared band's focusing benchmark and each other optical axis uniformity accent axle benchmark.
Description
Technical Field
The utility model relates to a target simulation ware emulation field especially relates to a multi-spectral-band composite photoelectric device focusing is transferred axle and is used off-axis target simulation ware.
Background
With the development of science and technology, the application of multi-sensor optoelectronic devices is more and more extensive. The working wave bands of the multi-spectral-band composite photoelectric equipment cover a plurality of wave bands of visible light, infrared and laser, compared with the traditional single-mode photoelectric equipment, the multi-spectral-band composite photoelectric equipment not only can observe a target by utilizing the visible light, but also can obtain a longer acting distance and a larger search view field by utilizing infrared detection, and can also reduce interference, reduce false alarm rate and the like by obtaining different spectral information of the target, and can also obtain the distance information of the target by utilizing the laser to measure the distance.
Under the large background that the battlefield environment is more and more complicated, in order to avoid the situation that the target can not be hit when the target is seen, the target identification and distance measurement capabilities are improved, and the requirement on the optical axis consistency of the multi-spectral-band composite photoelectric equipment is higher and higher. The research of the existing target simulator on the target simulator is limited to a simulation test technology of a seeker system, and an optical axis calibration reference cannot be provided for a composite photoelectric system.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a multispectral compound optoelectronic device focusing is transferred and is used off-axis target simulation ware for solve among the prior art current target simulation ware can not provide the problem that the optical axis demarcated the benchmark for compound optoelectronic system.
According to the utility model discloses off-axis target simulator for multi-spectral band composite photoelectric device focusing and adjusting shaft, include: the device comprises a structural frame, and an attenuation sheet, an off-axis primary mirror, a light path turning reflector set, a spectroscope component, an imaging camera component, a target and an illumination component which are connected to the structural frame;
the illumination component is suitable for illuminating a target, light rays of the target enter the light path turning reflector set after being reflected by the spectroscope component, enter the off-axis primary mirror after being reflected for multiple times by the light path turning reflector set, and are reflected to the attenuation sheet by the off-axis primary mirror;
the off-axis primary mirror is suitable for focusing parallel light rays, the target is located on a focusing surface of the off-axis primary mirror, the spectroscope component is used for realizing half-reflection and half-transmission of visible light and laser wave bands and reflection of infrared wave bands, and the light rays transmitted by the spectroscope component are suitable for being incident to the imaging camera component.
According to some embodiments of the invention, the target comprises a target for adjusting a shaft and a target for adjusting a focus;
the target for adjusting the axis is used for adjusting the consistency of the optical axis of the multi-spectral-band composite photoelectric equipment;
the target for focusing is used for debugging the focal plane of the multi-spectral-band composite photoelectric equipment.
According to some embodiments of the utility model, the target is the central point target for the focusing, the target is four-bar target for the focusing.
According to some embodiments of the invention, the beamsplitter assembly comprises a beamsplitter with a metal-induced film plated on a surface thereof.
According to some embodiments of the invention, the off-axis primary mirror is an off-axis parabolic mirror;
and the reflecting surface of the off-axis parabolic reflector is plated with a reflecting film.
According to some embodiments of the invention, the off-axis primary mirror with the structural frame is an aluminum alloy part.
According to some embodiments of the invention, the attenuation ratio of the attenuation sheet is adapted to be adjusted according to the laser energy.
According to some embodiments of the invention, the lighting assembly comprises a halogen lamp and a frosted glass, the halogen lamp being adapted to provide both visible and infrared bands.
According to some embodiments of the invention, the imaging camera component comprises a CCD, CMOS or short wave camera.
Adopt the embodiment of the utility model provides a, through adopting off-axis light path, the light path that can solve coaxial target simulation ware shelters from, bulky problem, the integrated level is high, moreover, the steam generator is compact in structure, it is small and exquisite portable, mark the precision height, can provide very stable and reliable visible light for the compound optoelectronic device of multispectral section, laser, the focusing benchmark of infrared band and the optical axis uniformity accent axle benchmark each other, can be applied to the machine and carry, on-vehicle class photoelectric tracking and aiming equipment, simplify the optical axis uniformity debugging and the calibration process of multispectral section optoelectronic device greatly, can be applied to the automatic school axle of installation of compound optoelectronic device simultaneously.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. In the drawings:
fig. 1 is a schematic view of an off-axis target simulator for focusing and adjusting an axis of a multi-spectral-band composite optoelectronic device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an off-axis target simulator calibration process for focusing and adjusting the axis of the multi-spectral-band composite optoelectronic device according to an embodiment of the present invention;
fig. 3 is a schematic view of an off-axis target simulator for adjusting the axis of the multi-spectral band composite optoelectronic device for focusing and adjusting the axis in the embodiment of the present invention;
fig. 4 is a schematic view of the embodiment of the present invention illustrating the consistency of the visible light axis and the infrared light axis of the off-axis target simulator for focusing and adjusting the axis of the multi-spectral band composite optoelectronic device;
fig. 5 is a schematic diagram of the embodiment of the present invention illustrating the consistency of the laser emission axis and the infrared optical axis of the off-axis target simulator for focusing and adjusting the axis of the multi-spectral band composite optoelectronic device;
fig. 6 is the embodiment of the utility model provides an in the embodiment the utility model discloses the embodiment of the off-axis target simulator focusing is used in the focusing of multi-spectral band compound optoelectronic device.
Reference numerals:
the off-axis object simulator 100 is,
an attenuation sheet 1, an off-axis primary mirror 2, an optical path deflecting reflector group 3, a spectroscope component 4, an imaging camera component 5, a target 6, an illumination component 7, a halogen lamp 71, ground glass 72, a pyramid 9,
the device comprises a multispectral composite photoelectric device 10, a visible light sensor 11, an infrared sensor 12 and a laser transmitter 13.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The embodiment of the first aspect of the utility model provides a multi-spectral band composite photoelectric device focusing is transferred axle and is used off-axis target simulator 100, as shown in FIG. 1, include: the device comprises a structural framework, and an attenuation sheet 1, an off-axis primary mirror 2, a light path deflection reflector group 3, a spectroscope component 4, an imaging camera component 5, a target 6 and an illumination component 7 which are connected to the structural framework;
the illumination component 7 is suitable for illuminating a target 6, light rays of the target 6 enter the light path deflection reflector group 3 after being reflected by the spectroscope component 4, enter the off-axis primary mirror 2 after being reflected for multiple times by the light path deflection reflector group 3, and then are reflected to the attenuation sheet 1 by the off-axis primary mirror 2;
the off-axis primary mirror 2 is suitable for focusing parallel light rays, the target 6 is located on the focusing surface of the off-axis primary mirror 2, the spectroscope component 4 is used for realizing half-reflection and half-transmission of visible light and laser wave bands and reflection of infrared wave bands, and the light rays transmitted by the spectroscope component 4 are suitable for being incident to the imaging camera component 5. Therefore, the optical path is an off-axis optical path, the shielding of the lens on the energy of the optical path is avoided, the layout structure is stable, and the environmental adaptability is good.
The attenuation sheet 1 can be matched with actual laser energy to select attenuation multiplying power, and the problem of laser speckle can be solved.
Adopt the embodiment of the utility model provides a, through adopting off-axis light path, the light path that can solve coaxial target simulation ware shelters from, bulky problem, the integrated level is high, moreover, the steam generator is compact in structure, it is small and exquisite portable, mark the precision height, can provide very stable and reliable visible light for the compound optoelectronic device of multispectral section, laser, the focusing benchmark of infrared band and the optical axis uniformity accent axle benchmark each other, can be applied to the machine and carry, on-vehicle class photoelectric tracking and aiming equipment, simplify the optical axis uniformity debugging and the calibration process of multispectral section optoelectronic device greatly, can be applied to the automatic school axle of installation of compound optoelectronic device simultaneously.
On the basis of the above-described embodiment, various modified embodiments are further proposed, and it is to be noted herein that, in order to make the description brief, only the differences from the above-described embodiment are described in the various modified embodiments.
According to some embodiments of the invention, the target 6 comprises a target for adjusting a shaft and a target for adjusting a focus;
the axis-adjusting target is used for adjusting the consistency of the optical axis of the multi-spectral-band composite photoelectric equipment;
the target for focusing is used for debugging the focal plane of the multi-spectral-band composite photoelectric equipment.
According to some embodiments of the utility model, transfer the axle to use the target as the central point target, the focusing is with the target for four-bar target.
According to some embodiments of the present invention, the beamsplitter module 4 comprises a beamsplitter with a metal-induced film plated on a surface thereof. Therefore, the semi-reflection and semi-transmission of visible light and laser wave bands and the reflection of infrared wave bands can be realized.
According to some embodiments of the invention, the off-axis primary mirror 2 is an off-axis parabolic mirror;
the reflecting surface of the off-axis parabolic reflector is plated with a reflecting film.
According to some embodiments of the utility model, off-axis primary mirror 2 is the aluminum alloy spare with the structural framework. Therefore, the optical-mechanical integrated design is realized, and the athermalization effect is realized.
According to some embodiments of the present invention, the attenuation ratio of the attenuation sheet 1 is adapted to be adjusted according to the laser energy.
As shown in fig. 1, according to some embodiments of the present invention, the lighting assembly 7 includes a halogen lamp 71 and a ground glass 72, and the halogen lamp 71 is used for providing a visible light band and an infrared band at the same time.
According to some embodiments of the invention, the imaging camera component 5 comprises a CCD, CMOS or short wave camera.
The off-axis target simulator 100 for multi-spectral band composite optoelectronic device focusing and axis adjustment according to the embodiment of the present invention is described in detail below with reference to fig. 1 to 6. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention. All adopt the utility model discloses a similar structure and similar change all should be listed in the protection scope of the utility model.
As shown in fig. 1, the utility model discloses off-axis target simulator 100 for multi-spectral band composite optoelectronic device focusing and tuning shaft, include: the device comprises an attenuation sheet 1, an off-axis primary mirror 2, a light path deflection reflector group 3, a spectroscope component 4, an imaging camera component 5, a target 6, an illumination component 7 and a structural framework.
The attenuation sheet 1 has the main function of attenuating laser bands, and different attenuation rates can be selected according to laser energy.
The off-axis main mirror 2 is an off-axis paraboloid reflector, and the surface of the off-axis main mirror is plated with a reflecting film which can be a gold film, a silver film and the like. The off-axis primary mirror 2 mainly plays a role in focusing an optical path, and the off-axis parabolic reflector is adopted mainly because the off-axis parabolic reflector does not shield energy to the optical path, and meanwhile, the layout structure is stable, the environmental adaptability is good, while the on-axis target simulator not only shields energy in the use process, but also the mounting structure of the secondary mirror is often unstable in structure, low in precision and poor in environmental adaptability, and the secondary mirror is likely to deform due to temperature change, vibration and the like, so that the off-axis optical path design target simulator is selected in consideration of the problems of energy shielding and environmental adaptability.
The optical path deflecting mirror group 3 is composed of a series of mirrors, and as shown in fig. 1, the optical path deflecting mirror group 3 includes four mirrors. The light path deflecting reflector group 3 is mainly arranged in the light path to play a role of compressing the volume of the system, and the light path reflects twice on two reflectors, so that the system structure is simplified, and the light path deflecting reflector group is compact in layout, small and portable.
The beam splitter component 4 is composed of a beam splitter, the surface of which is plated with a metal induction film, so that the semi-reflection and semi-transmission of visible light and laser wave bands and the reflection of infrared wave bands can be realized, and the beam splitter has the main functions of dividing the visible light and the laser wave bands into two light paths and reflecting the infrared light path.
The imaging camera assembly 5 is a CCD, CMOS or short wave camera or the like, and responds in the visible to short wave band.
The target 6 is divided into an axis-adjusting target and a focusing target, as shown in fig. 3, the axis-adjusting target is a central point target, as shown in fig. 6, the focusing target is a four-bar target or other targets, and is placed on the focusing surface of the primary mirror, and the lighting assembly 7 and the imaging camera assembly 5 are matched to provide a common reference for focal plane debugging and optical axis consistency debugging of the multi-band composite photoelectric device.
The lighting assembly 7 is composed of a halogen lamp 71 (tungsten lamp), ground glass 72, and the halogen lamp 71 can provide both visible and infrared bands, and mainly functions to illuminate the target 6.
The structural frame is made of a material consistent with the primary mirror, so that the structural strength of the structural frame is guaranteed, and meanwhile, the athermal design is met.
By adopting the embodiment of the utility model, visible light, medium wave infrared, long wave infrared and laser can be combined and share the aperture, the integration level is high, the structure is compact, small and portable; by adopting the off-axis light path form, the light path shielding is avoided, the device is more suitable for various environments than a coaxial target simulator, and a stable and reliable optical axis calibration reference between various wave bands can be provided for the multi-spectral band composite photoelectric equipment; the selectable attenuation sheet is utilized to match with actual laser energy to select attenuation multiplying power, so that the problem of laser speckle can be solved, and the alignment precision of an optical axis can be improved; the device can be simultaneously used for debugging the focal planes of a plurality of sensors, such as a visible light sensor, a medium wave infrared sensor, a long wave infrared sensor and the like; the consistency of the high optical axes of visible light, infrared light and laser light is realized in principle, and the debugging and calibration precision can be improved; the shape of the light spot is monitored through the imaging component, the centroid position of the light spot is calculated through software, the light spot is digitized, quantitative calibration of the optical axis is achieved, operation is simple, and alignment accuracy is high; the off-axis main mirror and the frame are made of the same material, and the integrated design of the optical-mechanical system is realized, so that the athermalization effect is realized, and the environmental adaptability is good; the light path deflection reflector is arranged, so that the layout is compact, the structure is simple, and the shock and vibration resistance is good; the device can work in multiple bands, and the coverage range of the bands is wide; the method can be applied to different photoelectric devices, such as laser/infrared composite photoelectric devices, visible light/infrared composite photoelectric devices and the like, and has good universality.
Utilize the utility model discloses the working process of multispectral compound optoelectronic device focusing off-axis target simulator for accent axle is:
imaging camera assembly and target calibration: opening an illumination light path to illuminate the target; target light rays enter the light path deflecting reflector group after being reflected by the spectroscope and then are emitted out of the off-axis primary mirror, a pyramid is arranged in front of the target simulator, and the light rays return in parallel after passing through the pyramid as shown in FIG. 2; after passing through the off-axis primary mirror and the light path deflection reflector group, the light returned by the pyramid is divided into two beams of light at the spectroscope, wherein the transmitted light beams are imaged on the imaging camera component, and the imaging camera component and the target are adjusted to enable the target to be imaged to the center of the field of view of the imaging camera component; at the moment, the target and the imaging camera component establish a conjugate relation to finish calibration;
and (3) debugging the consistency of the visible light optical axis and the infrared optical axis: aligning the light-transmitting aperture of the multi-spectral-band composite photoelectric equipment to a target simulator, as shown in fig. 4, opening an illumination light path to illuminate a target, wherein a halogen lamp light source comprises light rays in a visible light band and an infrared band, the light rays are reflected by a spectroscope and enter a light path turning reflector group, and then parallel light is emitted from an off-axis primary mirror, the multi-spectral-band composite photoelectric equipment receives the parallel light and debugs a visible light sensor and an infrared sensor, and debugs a received visible light target image and an infrared target image to a visual field center to complete consistency debugging of a visible light optical axis and an infrared optical axis;
laser emission optical axis and infrared optical axis uniformity debugging: aligning the multispectral composite optoelectronic device to a target simulator, as shown in fig. 5, the light of a laser transmitter finishes energy attenuation through an attenuation sheet, reaches a spectroscope after passing through the focusing of an off-axis primary mirror and a light path deflection reflector group, wherein the transmitted light beam is imaged to an imaging camera component, and the laser spot is adjusted to the center of the field of view of the imaging camera component by adjusting the laser transmitter, so as to finish the consistency debugging of a laser emission optical axis and an infrared optical axis;
the imaging camera adopts 2.2 micron pixels, the pixels are small in size and high in resolution, and the axis adjustment precision can be improved by matching with a light spot centroid algorithm of software.
Therefore, the visible light sensor, the laser transmitter and the infrared sensor finish the optical axis consistency debugging.
Similarly, the target can be replaced in the process of debugging the consistency of the optical axis, and the focal plane is debugged.
The specific parameters are as follows:
the working wave band is as follows: visible light: 460 nm, infrared 3.7-4.8 μm, 7.7-10.5 μm, laser 1064 nm;
the system comprises the following components: the device comprises a primary mirror, a light path deflection reflector set and a target;
effective caliber: 100 mm;
focal length: f is 300 mm;
f number: f/# ═ 3;
target diameter: phi is 8 mm;
an imaging camera: the size of the sensor is 1/2.5', and the size of the pixel is 2.2 mu m multiplied by 2.2 mu m;
it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention, and those skilled in the art can make various modifications and changes. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The shape of the light spot is monitored through the imaging component, the centroid position of the light spot is calculated through software, the light spot is digitized, quantitative calibration of the optical axis is achieved, operation is simple, and alignment accuracy is high.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Claims (9)
1. An off-axis target simulator for multi-spectral band composite optoelectronic device focusing and axis adjustment is characterized by comprising: the device comprises a structural frame, and an attenuation sheet, an off-axis primary mirror, a light path turning reflector set, a spectroscope component, an imaging camera component, a target and an illumination component which are connected to the structural frame;
the illumination component is suitable for illuminating a target, light rays of the target enter the light path turning reflector set after being reflected by the spectroscope component, enter the off-axis primary mirror after being reflected for multiple times by the light path turning reflector set, and are reflected to the attenuation sheet by the off-axis primary mirror;
the off-axis primary mirror is suitable for focusing parallel light rays, the target is located on a focusing surface of the off-axis primary mirror, the spectroscope component is used for realizing half-reflection and half-transmission of visible light and laser wave bands and reflection of infrared wave bands, and the light rays transmitted by the spectroscope component are suitable for being incident to the imaging camera component.
2. The multi-spectral band compound optoelectronic device focus adjustment off-axis target simulator of claim 1, wherein said targets comprise an adjustment target and a focus target;
the target for adjusting the axis is used for adjusting the consistency of the optical axis of the multi-spectral-band composite photoelectric equipment;
the target for focusing is used for debugging the focal plane of the multi-spectral-band composite photoelectric equipment.
3. The off-axis object simulator for multi-spectral band compound optoelectronic device focusing adjustment according to claim 2, wherein the target for adjustment is a center point target and the target for focusing is a four-bar target.
4. The off-axis target simulator for use in tuning the focus of a multispectral composite optoelectronic device as recited in claim 1, wherein said beamsplitter module comprises a beamsplitter having a surface coated with a metal-induced film.
5. The off-axis target simulator for multi-spectral composite optoelectronic device focus adjustment of claim 1, wherein said off-axis primary mirror is an off-axis parabolic mirror;
and the reflecting surface of the off-axis parabolic reflector is plated with a reflecting film.
6. The off-axis target simulator for use in tuning a multi-spectral band compound optoelectronic device of claim 1, wherein said off-axis primary mirror and said structural frame are aluminum alloy members.
7. The off-axis target simulator for multi-spectral band compound optoelectronic device focus adjustment of claim 1, wherein the attenuation ratio of the attenuation sheet is adapted to be adjusted according to laser energy.
8. The off-axis target simulator for multi-spectral band compound optoelectronic device focus adjustment axis of claim 1, wherein the illumination assembly comprises a halogen lamp and a frosted glass, the halogen lamp for providing visible and infrared bands simultaneously.
9. The off-axis target simulator for multi-spectral band compound optoelectronic device focus adjustment axis of claim 1, wherein the imaging camera assembly comprises a CCD, CMOS or short wave camera.
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