CN217739499U - Atmospheric ocean exploration laser radar relay optical system - Google Patents
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Abstract
The utility model provides an atmosphere ocean exploration laser radar relay optical system, including visual field separating mirror, ocean exploration passageway collimating mirror group, ocean exploration passageway focusing mirror group, atmosphere exploration passageway collimating mirror group, first dichroic mirror, 355nm focusing mirror group, second dichroic mirror, depolarization piece, polarization beam splitter prism, catadioptric reflector, 532nm focusing mirror and 1064nm focusing mirror. The utility model separates the echo signals of 532nm large visual field in the sea bottom from the echo signals of 355nm, 532nm and 1064nm central visual field in the sea surface by adopting the visual field separating mirror, thereby realizing the composite detection of the atmosphere ocean space environment; the optical modules such as the collimating lens, the focusing lens, the dichroic mirror, the polarization beam splitter, the optical filter and the like are adopted to process echo signals, so that the function of detecting the three-wavelength five-channel in the air and sea is realized, and the composite detection of the atmosphere and the sea can be realized.
Description
Technical Field
The utility model relates to a measure test technical field, concretely relates to atmosphere ocean exploration laser radar relay optical system.
Background
The weather marine environmental conditions are important factors influencing the progress of military operations, and can determine the success or failure of the military operations in special cases. According to the method, a push-broom CCD low-light cloud image imager, a full-polarization microwave radiometer, an infrared scanning radiometer and other payloads are loaded on a first generation military atmospheric marine environment satellite cloud sea first satellite in China, and information such as a global low-light visible light infrared cloud image, a sea surface wind field and the like is acquired by means of low-light and infrared imaging, microwave radiation detection and the like, so that the occurrence and evolution conditions of low-cloud and heavy fog at sea and a target area in the morning and evening period are monitored in a key mode, and meteorological hydrological guarantee is provided for the application of naval vessels, naval aircraft take-off and landing, aviation flight, accurate guidance weapons and optical reconnaissance satellites in China. A new generation of military atmospheric marine environment comprehensive observation satellite mainly realizes detection of land surface, sea surface, atmosphere, cloud, middle and high altitude wind field, space environment and the like, produces and generates guarantee products of low cloud and fog, sea surface wind field, temperature and humidity profiles, middle and high altitude wind field, space environment and the like, realizes atmospheric marine environment detection and forecast functions of a target area, can provide atmospheric marine environment information for navigation, shipborne take-off and landing, aviation flight, accurate guided weapon application and the like of a navy surface ship, and improves meteorological hydrology guarantee capability of China.
Atmospheric ocean sounding lidar is mainly used to enhance cloud detection capabilities, especially cloud vertical structure and classification, as well as aerosol and visibility detection. Therefore, a relay optical system suitable for comprehensive detection of air and sea is needed to enable the atmospheric marine environment monitoring radar to have high-precision cloud (cloud phase state, cloud droplet diameter), aerosol (atmospheric visibility), sea surface wind field and sea wave detection capabilities in a global range.
Disclosure of Invention
The utility model provides a relay optical system of atmospheric marine detection laser radar, which solves the problem of atmospheric and marine composite detection, and separates 532nm large view field echo signals of the detection sea bottom from 355nm, 532nm and 1064nm echo signals of the central view field of the detection atmosphere and the sea surface by adopting a view field separating mirror, thereby realizing the composite detection of atmospheric marine space environment; the optical modules such as a collimating lens, a focusing lens, a dichroic mirror, a polarization beam splitter, an optical filter and the like are adopted to process echo signals, so that the gas-sea three-wavelength five-channel detection function is realized, and the atmosphere and sea composite detection can be realized.
The utility model provides an atmosphere ocean exploration laser radar relay optical system, including setting up the field of view separating mirror on receiving telescope output light path, set gradually ocean exploration passageway collimating mirror group on the reflection light path of field of view separating mirror, ocean exploration passageway focusing mirror group, set gradually atmosphere exploration passageway collimating mirror group on the central light path of field of view separating mirror, first dichroic mirror, 355nm focusing mirror group on the reflection light path of first dichroic mirror, second dichroic mirror on the transmission light path of first dichroic mirror, depolarizer, polarization splitting prism on the reflection light path of second dichroic mirror, the turning mirror that sets up on the reflection light path of polarization splitting prism, 532nm focusing mirror that sets up on the transmission light path of polarization splitting prism, turning mirror reflection light path and 1064nm focusing mirror that sets up on the transmission light path of second dichroic mirror;
the center of the field separating mirror is provided with a hole, the small-field atmospheric echo signal received by the receiving telescope is transmitted to the atmospheric detection channel collimating mirror group after passing through the hole of the field separating mirror, and the number of 532nm focusing mirrors is 2.
An atmosphere ocean exploration laser radar relay optical system, as preferred mode, 532nm high anti-membrane is plated on visual field separating mirror surface, 355nm high anti-membrane is plated on first dichroic mirror surface, 532nm high anti-membrane is plated on second dichroic mirror surface.
An atmosphere ocean exploration laser radar relay optical system, as preferred mode, ocean exploration passageway focus mirror group, 355nm focus mirror group, 532nm focus mirror and 1064nm focus the front end light path of mirror and all set up the light filter, the light filter is the narrowband optical filter.
An atmosphere ocean exploration laser radar relay optical system, as preferred mode, ocean exploration passageway focus mirror group, 355nm focus mirror group, 532nm focusing mirror and 1064nm focusing mirror's rear end light path all sets up photoelectric detector.
An atmosphere ocean exploration laser radar relay optical system, as preferred mode, the facula size and photoelectric detector's photosensitive surface size phase-match after ocean exploration passageway focus mirror group, 355nm focus mirror group, 532nm focus mirror and 1064nm focus mirror focus.
An atmosphere ocean exploration laser radar relay optical system, as preferred mode, the equal 45 places of visual field separating mirror, first dichroic mirror, second dichroic mirror, turning reflecting mirror.
An atmosphere ocean exploration laser radar relay optical system, as preferred mode, ocean exploration passageway collimating lens group is big field of view 532nm wavelength collimating lens, ocean exploration passageway collimating lens group includes that the material is 3 optical lens of H-ZF7LA, H-K9L, H-ZF7LA respectively.
A laser radar relay optical system is surveyed to atmosphere ocean, as preferred mode, passageway collimating mirror group is surveyed to atmosphere is central visual field 355nm, 532nm and 1064nm three wavelength collimating mirror, and passageway collimating mirror group is surveyed to atmosphere includes that two materials are SILICA's optical lens.
An atmosphere ocean exploration laser radar relay optical system, as preferred mode, ocean exploration passageway focusing mirror group is big field of view 532nm wavelength focusing mirror, ocean exploration passageway focusing mirror group includes that the material is 3 optical lens of H-ZF7LA, H-K9L, H-ZF7LA respectively.
The utility model discloses an atmosphere ocean exploration laser radar relay optical system, as the preferred mode, 355nm focusing mirror group includes two optical lenses that the material is SILICA;
the 1064nm focusing lens comprises 3 optical lenses made of H-ZF7LA, H-K9L and H-ZF7LA respectively.
The utility model discloses according to atmosphere ocean detection laser radar functional index demand, provided a relay optical system suitable for gas sea is synthesized and is surveyed, make atmosphere marine environment monitoring radar possess high accuracy cloud (cloud looks attitude, cloud drop diameter), aerosol (atmospheric visibility) and sea wind field, wave detection ability in the global scope.
The technical solution of the utility model is as follows: an atmospheric ocean exploration laser radar relay optical system is divided into five channels which are respectively: detecting a 532nm channel on the seabed; detecting a 355nm channel in atmosphere; an atmospheric sounding 532nmP polarization sounding channel; an atmospheric sounding 532nmS polarization sounding channel; atmospheric detection 1064nm detection channel. The atmospheric ocean exploration laser radar relay optical system is composed of modules such as a view field separating mirror, a collimating mirror, a focusing mirror, a dichroic mirror, a turning reflecting mirror, a polarization beam splitter, a depolarization piece and an optical filter, and is used for processing echo signals by view field separation, color separation, filtering and the like and finally focusing the echo signals on a photosensitive surface of a detector.
The utility model provides an atmosphere ocean exploration laser radar relay optical system which characterized in that: the device consists of a field separation mirror, an ocean detection channel collimating mirror group, an ocean detection channel focusing mirror group, an atmosphere detection channel collimating mirror group, a dichroic mirror 1, a 355nm focusing mirror group, a dichroic mirror 2, a depolarizing piece, a polarization splitting prism, a catadioptric mirror, a 532nm focusing mirror, a 1064nm focusing mirror and narrow-band filters of all channels, and optical parameters of the device are matched with parameters of a receiving telescope.
The field separation mirror is placed at the focal plane of the receiving telescope at an angle of 45 degrees, the center of the field separation mirror is provided with a hole, and a 532nm high-reflection film is plated on the field separation mirror and is used for separating 532mm large-field echo signals from 355nm, 532nm and 1064nm center small-field echo signals.
The collimating lens comprises a 532nm large-field collimating lens and a three-wavelength central-field collimating lens, and is used for collimating the echo signals into parallel light, and the F number of the collimating lens needs to be matched with the F number of the telescope.
The focusing mirror is used for focusing the collimated echo signals so as to be received by a photosensitive surface of the detector, and the size of a focused light spot needs to be matched with the size of the photosensitive surface of the detector.
The dichroic mirror is placed at 45 degrees and used for separating different wavelengths of light, wherein the dichroic mirror reflects 355nm wavelength light and transmits 532nm and 1064nm wavelength light, and the dichroic mirror reflects 532nm wavelength light and transmits 1064nm wavelength light. The deflection mirror is placed at 45 degrees and is used for deflecting the 532nm light path.
The polarizing beam splitter was used for 532nm polarization channel to separate 532nmP light from S light. Each channel filter is used for filtering background stray light and improving the signal-to-noise ratio of the system, and the central wavelength of each channel filter needs to be matched with the wavelength of the laser.
The collimating lens module comprises two kinds of collimating lenses, one kind is a large-view-field 532nm wavelength collimating lens, which comprises 3 optical lenses made of H-ZF7LA, H-K9L and H-ZF7LA respectively. A355 nm, 532nm and 1064nm three-wavelength collimating lens with central visual field comprises two optical lenses made of SILICA.
The focusing lens module comprises three focusing lenses, one focusing lens is a large-view-field 532nm wavelength focusing lens, the size of a photosensitive surface of the focusing lens is 8mm, the focusing lens comprises 3 optical lenses, and the materials are respectively H-ZF7LA, H-K9L and H-ZF7LA; one is 355nm and 532nm focusing lens, the size of the photosensitive surface is 8mm, and the lens comprises two optical lenses made of SILICA; the last is 1064nm focusing lens with photosensitive surface of 0.8mm, and comprises 3 optical lenses made of H-ZF7LA, H-K9L and H-ZF7LA, respectively.
A field separating mirror is arranged at 45 degrees of the focal plane of the receiving telescope, the center of the field separating mirror is provided with a hole, the surface of the field separating mirror is plated with a 532nm high-reflection film, 532nm large-field echo signals are reflected to the ocean detection channel collimating mirror group to be collimated into parallel light, a 532nm optical filter is added into a parallel light path, and then the parallel light path is focused by the ocean detection channel focusing mirror group and then enters the photosensitive surface of the ocean detection channel detector. After the small-view-field atmospheric echo signal passes through a central hole of the view field separating mirror, the small-view-field atmospheric echo signal is collimated by the atmospheric detection channel collimating mirror group and then subjected to color separation by the dichroic mirror 1, wherein the 355nm wavelength echo signal is reflected and is incident to the photosensitive surface of the 355nm atmospheric detection channel detector after being focused by the 355nm optical filter and the 355nm focusing mirror group. After transmitted 532nm and 1064nm echo signals pass through a dichroic mirror, 532nm echo signals are reflected, 532nmS polarized light is reflected through a polarization beam splitter prism, and the reflected 532nmS polarized light is incident to a photosensitive surface of a 532nmS channel detector after passing through a deflection reflector, a 532nm optical filter and a 532nm focusing mirror. The polarization beam splitter prism transmits 532nmP polarized light, and the polarized light enters the photosensitive surface of the 532nmP channel detector after passing through the optical filter and the 532nm focusing mirror. And 1064nm echo signal light transmitted by the dichroic mirror enters a light-sensitive surface of a 1064nm atmospheric detection channel detector after passing through a 1064nm optical filter and a 1064nm focusing mirror.
And the photoelectric detector on the rear light path of the 1064nm focusing mirror is an APD (avalanche photo diode), and the rest photoelectric detectors are PMTs (photoelectric detectors).
The depolarization piece is used for calibrating the polarization efficiency of the 532nm polarization channel, is cut into the optical path to perform polarization calibration when the system is in a polarization calibration mode, and is cut out of the optical path to perform normal detection when the system is in a sea-air detection mode.
The utility model has the advantages of it is following:
(1) Present laser radar technique is basically to survey atmosphere and separately with the ocean, is two detection systems, the utility model discloses a relay optical system can realize atmosphere ocean integration, miniaturized detection, satisfies diversified military task meteorological hydrology guarantee.
(2) The utility model discloses a 45 speculum center trompil divides the design of visual field, minute wavelength, can separate 532nm big visual field ocean echo signal, does not influence the processing of atmosphere little visual field echo signal again.
Drawings
FIG. 1 is a schematic diagram of an atmospheric ocean exploration lidar relay optical system;
FIG. 2 is an optical design diagram of an ocean exploration channel of an atmospheric ocean exploration laser radar relay optical system;
FIG. 3 is an optical design diagram of 355nm, 532nmP/S atmospheric sounding channel of atmospheric marine sounding laser radar relay optical system;
FIG. 4 is an optical design diagram of an atmospheric detection channel of 1064nm of an atmospheric ocean detection laser radar relay optical system.
Reference numerals are as follows:
1. a field separating mirror; 2. an ocean detection channel collimating lens group; 3. a focusing lens group of the ocean detection channel; 4. an atmosphere detection channel collimating lens group; 5. a first dichroic mirror; 6. 355nm focusing lens group; 7. a second dichroic mirror; 8. a depolarization piece; 9. a polarization splitting prism; 10. A turning mirror; 11. a 532nm focusing mirror; 12. 1064nm focusing mirror.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example 1
As shown in fig. 1, an atmospheric ocean detection lidar relay optical system comprises a field splitter 1 arranged on an output light path of a receiving telescope, an ocean detection channel collimating mirror group 2 and an ocean detection channel focusing mirror group 3 which are sequentially arranged on a reflection light path of the field splitter 1, an atmospheric detection channel collimating mirror group 4 and a first dichroic mirror 5 which are sequentially arranged on a central light path of the field splitter 1, a 355nm focusing mirror group 6 arranged on a reflection light path of the first dichroic mirror 5, a second dichroic mirror 7 arranged on a transmission light path of the first dichroic mirror 5, an depolarizing plate 8 and a polarization splitting prism 9 which are arranged on a reflection light path of the second dichroic mirror 7, a turning mirror 10 arranged on a reflection light path of the polarization splitting prism 9, a 532nm focusing mirror 11 arranged on a transmission light path of the polarization splitting prism 9 and a reflection mirror 10, and a 1064nm focusing mirror 12 arranged on a transmission light path of the second dichroic mirror 7;
the center of the visual field separating mirror 1 is provided with a hole, small visual field atmosphere echo signals received by the receiving telescope are transmitted to the atmosphere detection channel collimating mirror group 4 after passing through the hole of the visual field separating mirror 1, and the number of 532nm focusing mirrors 11 is 2;
the surface of the field separation mirror 1 is plated with a 532nm high-reflection film, the surface of the first dichroic mirror 5 is plated with a 355nm high-reflection film, and the surface of the second dichroic mirror 7 is plated with a 532nm high-reflection film;
light filters are arranged on front-end light paths of the ocean detection channel focusing mirror group 3, the 355nm focusing mirror group 6, the 532nm focusing mirror 11 and the 1064nm focusing mirror 12, and the light filters are narrow-band light filters;
photoelectric detectors are arranged on the rear-end light paths of the ocean detection channel focusing mirror group 3, the 355nm focusing mirror group 6, the 532nm focusing mirror 11 and the 1064nm focusing mirror 12;
the size of the light spot focused by the ocean detection channel focusing mirror group 3, the 355nm focusing mirror group 6, the 532nm focusing mirror 11 and the 1064nm focusing mirror 12 is matched with the size of the photosensitive surface of the photoelectric detector;
the view field separating mirror 1, the first dichroic mirror 5, the second dichroic mirror 7 and the turning reflector 10 are all placed at 45 degrees;
the ocean detection channel collimating lens group 2 is a large-view-field 532nm wavelength collimating lens, and comprises 3 optical lenses made of H-ZF7LA, H-K9L and H-ZF7LA respectively;
the atmosphere detection channel collimating lens group 4 is a three-wavelength collimating lens with a central field of view of 355nm, 532nm and 1064nm, and the atmosphere detection channel collimating lens group 4 comprises two optical lenses which are made of SILICA;
the ocean detection channel focusing lens group 3 is a large-view-field 532nm wavelength focusing lens, and the ocean detection channel focusing lens group 3 comprises 3 optical lenses made of H-ZF7LA, H-K9L and H-ZF7LA respectively;
the 355nm focusing lens group 6 comprises two optical lenses made of SILICA;
the 1064nm focusing lens 12 comprises 3 optical lenses made of H-ZF7LA, H-K9L and H-ZF7LA respectively.
The application method comprises the following steps: a field separating mirror 1 is arranged at the focal plane of a receiving telescope at an angle of 45 degrees, the center of the field separating mirror is provided with a hole, the surface of the field separating mirror is coated with a 532nm high-reflection film, 532nm large-field echo signals are reflected to an ocean detection channel collimating mirror group 2 to be collimated into parallel light, 532nm light filters are added into parallel light paths, and then the parallel light paths are focused by an ocean detection channel focusing mirror group 3 and then enter the photosensitive surface of an ocean detection channel detector. After the small-view-field atmospheric echo signal passes through a central hole of the view field separating mirror, the small-view-field atmospheric echo signal is collimated by the atmospheric detection channel collimating mirror group 4 and then subjected to color separation by the dichroic mirror 15, wherein the 355nm wavelength echo signal is reflected and is focused by the 355nm optical filter and the 355nm focusing mirror group 6 and then enters the photosensitive surface of the 355nm atmospheric detection channel detector. After passing through a dichroic mirror 7, 532nm echo signals are reflected by transmitted 532nm and 1064nm echo signals, reflected by polarized beam splitting prisms 9 and 532nmS polarized light, and then incident to a photosensitive surface of a 532nmS channel detector after passing through a turning reflecting mirror 10, a 532nm optical filter and a 532nm focusing mirror 11. The polarization beam splitter prism transmits 532nmP polarized light, and the polarized light enters the photosensitive surface of the 532nmP channel detector after passing through the optical filter and the 532nm focusing mirror 11. The 1064nm echo signal light transmitted by the dichroic mirror 7 passes through the 1064nm filter and the 1064nm focusing mirror 12, and then enters the light-sensitive surface of the 1064nm atmospheric detection channel detector.
Example 2
An atmospheric sea detection laser radar relay optical system can realize the integrated detection of a sea surface, a sea bottom and atmosphere with 3 wavelengths and 6 channels, and the schematic diagram of the optical system is shown in figure 1. A field separating mirror 1 is arranged at the focal plane of the receiving telescope at an angle of 45 degrees, the center of the field separating mirror is provided with a hole, the surface of the field separating mirror is plated with a 532nm high-reflection film, 532nm large-field echo signals are reflected to an ocean detection channel collimating mirror group 2 to be collimated into parallel light, a 532nm light filter is added into a parallel light path, and then the parallel light path is focused by an ocean detection channel focusing mirror group 3 and then enters the photosensitive surface of an ocean detection channel detector. After the small-view-field atmospheric echo signal passes through a central hole of the view field separating mirror, the small-view-field atmospheric echo signal is collimated by the atmospheric detection channel collimating mirror group 4, then subjected to color separation by the first dichroic mirror 5, reflected by the 355nm wavelength echo signal, focused by the 355nm optical filter and the 355nm focusing mirror group 6, and then incident to the photosensitive surface of the 355nm atmospheric detection channel detector. After passing through a dichroic mirror 7, 532nm echo signals are reflected by transmitted 532nm and 1064nm echo signals, reflected by polarized beam splitting prisms 9 and 532nmS polarized light, and then incident to a photosensitive surface of a 532nmS channel detector after passing through a turning reflecting mirror 10, a 532nm optical filter and a 532nm focusing mirror 11. The polarization beam splitter prism transmits 532nmP polarized light, and the polarized light enters a photosensitive surface of a 532nmP channel detector after passing through the optical filter and the 532nm focusing mirror 11. The 1064nm echo signal light transmitted by the dichroic mirror 7 passes through the 1064nm filter and the 1064nm focusing mirror 12, and then enters the light-sensitive surface of the 1064nm atmospheric detection channel detector. The depolarizing plate 8 cuts into the optical path for polarization calibration when the system is in the polarization calibration mode, and cuts out the optical path when the system is in the air-sea detection mode.
Considering the problem that optical elements such as an optical filter, a dichroic mirror and a polarization beam splitter are required to be added into a relay light path, and the optical elements such as the optical filter have requirements on the incident angle of light, each designed channel optical system is divided into a collimating mirror module and a focusing mirror module, parallel light is arranged between the collimating mirror module and the focusing mirror module, the light angle of the parallel light is designed according to the maximum light incident angle accepted by the optical elements such as the optical filter during design, and the photosensitive surface of the detector is placed at the focus of the focusing mirror.
The above design process is described in detail below
Overall index parameter of relay optical system
The relay optical system design input parameters are as follows:
the wavelength is 355nm, 532nm and 1064nm;
visual field: 532nm ocean exploration channel field of view 10mrad
Atmospheric detection channel central field of view 1mrad
355nm, 532nm atmospheric detection channel detector photosurface: phi 8mm
532nm ocean exploration channel detector photosurface: phi 8mm
1064nm atmospheric detection channel detector photosurface: phi 0.8mm;
532nm ocean exploration channel optical design
The ocean exploration channel adopts a form of collimating by a collimating mirror and then focusing, and is divided into a collimating mirror group and a focusing mirror group, the design result is shown in figure 2, the collimating mirror group comprises 3 optical lenses made of H-ZF7LA, H-K9L and H-ZF7LA respectively, the nominal multiplying power of the collimating mirror is 20 times, the nominal divergence angle of the parallel light emitted by the collimating mirror is 1.14 degrees, and the requirement of the incident angle of the optical filter is met. The focusing lens group comprises 3 optical lenses which are made of H-ZF7LA, H-K9L and H-ZF7LA respectively, and the size of an image surface is 5.2mm after the optical lenses pass through the focusing lens, so that the size of a photosensitive surface of the detector is met.
355/532nm atmosphere detection channel optical design
The optical design of the 355nm/532nm atmospheric detection channel adopts a form of collimating by a collimating mirror and then focusing, and is divided into a collimating mirror group and a focusing mirror group, the design result is shown in figure 3, compared with the field of view of an ocean detection channel, the field of view of the atmospheric detection channel is much smaller, so that the collimating mirror and the focusing mirror both adopt a combination form of two plano-convex lenses, the materials are SILICA, and the spot size at the photosensitive surface of the detector is 4mm by adopting a defocusing mode of the focusing mirror.
1064nm atmospheric detection channel optical design
The 1064nm atmospheric detection channel adopts a form of collimating by a collimating lens and then focusing, and is divided into a collimating lens group and a focusing lens group, and the design result is shown in fig. 4, wherein the collimating lens is shared by the 355nm/532nm channel. The size of the light-sensitive surface of the 1064nm channel detector is 0.8mm, so three lenses are needed for the designed focusing lens, and the materials are respectively H-ZF7LA, H-K9L and H-ZF7LA. The final spot size at the photosurface is 0.6mm.
The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides an atmosphere ocean exploration laser radar relay optical system which characterized in that: the device comprises a visual field separating mirror (1) arranged on an output light path of a receiving telescope, an ocean detection channel collimating mirror group (2) and an ocean detection channel focusing mirror group (3) which are sequentially arranged on a reflection light path of the visual field separating mirror (1), an atmosphere detection channel collimating mirror group (4) and a first dichroic mirror (5) which are sequentially arranged on a central light path of the visual field separating mirror (1), a 355nm focusing mirror group (6) arranged on a reflection light path of the first dichroic mirror (5), a second dichroic mirror (7) arranged on a transmission light path of the first dichroic mirror (5), an depolarizing plate (8) and a polarization splitting prism (9) which are arranged on a reflection light path of the second dichroic mirror (7), a turning reflector (10) arranged on the reflection light path of the polarization splitting prism (9), a 532nm focusing mirror (11) arranged on the transmission light path of the polarization splitting prism (9) and the turning reflector (10) and a 1064nm focusing mirror (12) arranged on the transmission light path of the second dichroic mirror (7);
the center of the visual field separating mirror (1) is provided with a hole, small visual field atmosphere echo signals received by the receiving telescope are transmitted to the atmosphere detection channel collimating mirror group (4) after passing through the hole of the visual field separating mirror (1), and the number of the 532nm focusing mirrors (11) is 2.
2. The atmospheric ocean sounding lidar relay optical system of claim 1, wherein: the surface of the field separation mirror (1) is plated with a 532nm high-reflection film, the surface of the first dichroic mirror (5) is plated with a 355nm high-reflection film, and the surface of the second dichroic mirror (7) is plated with a 532nm high-reflection film.
3. The atmospheric marine detection lidar relay optical system of claim 1, wherein: light filters are arranged on front-end light paths of the ocean detection channel focusing mirror group (3), the 355nm focusing mirror group (6), the 532nm focusing mirror (11) and the 1064nm focusing mirror (12), and the light filters are narrow-band light filters.
4. The atmospheric ocean sounding lidar relay optical system of claim 1, wherein: photoelectric detectors are arranged on the rear-end light paths of the ocean detection channel focusing mirror group (3), the 355nm focusing mirror group (6), the 532nm focusing mirror (11) and the 1064nm focusing mirror (12).
5. The atmospheric ocean sounding lidar relay optical system of claim 4, wherein: the size of the light spot focused by the ocean detection channel focusing mirror group (3), the 355nm focusing mirror group (6), the 532nm focusing mirror (11) and the 1064nm focusing mirror (12) is matched with the size of the photosensitive surface of the photoelectric detector.
6. The atmospheric marine detection lidar relay optical system of claim 1, wherein: the field separation mirror (1), the first dichroic mirror (5), the second dichroic mirror (7) and the turning reflector (10) are all placed at 45 degrees.
7. The atmospheric ocean sounding lidar relay optical system of claim 1, wherein: the ocean exploration channel collimating lens group (2) is a large-view-field 532nm wavelength collimating lens, and the ocean exploration channel collimating lens group (2) comprises 3 optical lenses made of H-ZF7LA, H-K9L and H-ZF7LA respectively.
8. The atmospheric ocean sounding lidar relay optical system of claim 1, wherein: the atmosphere detection channel collimating lens group (4) is a three-wavelength collimating lens with a central field of view of 355nm, 532nm and 1064nm, and the atmosphere detection channel collimating lens group (4) comprises two optical lenses which are made of SILICA.
9. The atmospheric marine detection lidar relay optical system of claim 1, wherein: the ocean detection channel focusing lens group (3) is a large-view-field 532nm wavelength focusing lens, and the ocean detection channel focusing lens group (3) comprises 3 optical lenses which are respectively made of H-ZF7LA, H-K9L and H-ZF7LA.
10. The atmospheric ocean sounding lidar relay optical system of claim 1, wherein: the 355nm focusing mirror group (6) comprises two optical lenses made of SILICA;
the 1064nm focusing lens (12) comprises 3 optical lenses made of H-ZF7LA, H-K9L and H-ZF7LA respectively.
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| CN202220769861.6U CN217739499U (en) | 2022-04-02 | 2022-04-02 | Atmospheric ocean exploration laser radar relay optical system |
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| CN202220769861.6U CN217739499U (en) | 2022-04-02 | 2022-04-02 | Atmospheric ocean exploration laser radar relay optical system |
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