EP2601537A1 - Système d'imagerie - Google Patents

Système d'imagerie

Info

Publication number
EP2601537A1
EP2601537A1 EP12742940.5A EP12742940A EP2601537A1 EP 2601537 A1 EP2601537 A1 EP 2601537A1 EP 12742940 A EP12742940 A EP 12742940A EP 2601537 A1 EP2601537 A1 EP 2601537A1
Authority
EP
European Patent Office
Prior art keywords
channel
radiation
optical
laser
optoelectronic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12742940.5A
Other languages
German (de)
English (en)
Inventor
Alexander POTEMKIN
Elena Ivanova SMIRNOVA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP12742940.5A priority Critical patent/EP2601537A1/fr
Priority claimed from PCT/IB2012/001393 external-priority patent/WO2013054162A1/fr
Publication of EP2601537A1 publication Critical patent/EP2601537A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/86—Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders

Definitions

  • the claimed utility model relates to the field of optoelectronic device manufacturing, namely the rangefinder using a laser beam at any time of the day and can in the visual observation systems of terrestrial transport and marine transport, in the fire extinguishing technique for measuring the fire range, to determine the fire intensity and other technical areas are used.
  • optical systems that either secure the visual shape (direct or TV) or the thermal image and determine the distance between the target and the operator.
  • An optoelectronic two-channel system whose first optoelectronic channel (the narrow field of view channel) has an objective which is designed as a concave mirror with a retroreflector.
  • the second optoelectronic channel (the wide field of view channel) has a lens objective which is inserted in front of the objective of the first optoelectronic module and has a common optical axis with it.
  • the first optoelectronic channel and the second optoelectronic channel have a common photoreceptor matrix (US Patent N2 5161051, 1990).
  • a two-channel opto-electronic system each of which has an objective and a photo-receiving matrix arranged on the optical axis in the focal plane of the objective, the objective of the first optoelectronic channel being formed as a mirror lens channel with the central shield and the second optoelectronic channel is provided before the first and with this has a common optical axis (RU J 2091834, Kl. G02B17 / 08, 1995).
  • the known optoelectronic system makes it possible to simultaneously observe one and the same object in the different spectral ranges by means of different image receivers with the different image scales.
  • the known two-channel optoelectronic system has a high coefficient of central shielding. This not only leads to a significant decrease in the luminous flux passing through this optoelectronic system. but is also associated with the essential energy distribution in the focusing plane, which ultimately worsens the degree of contrast and thus the image quality.
  • the known optoelectronic two-channel system does not allow to measure the object distance in the different spectral ranges, since the channel of a laser rangefinder is missing in the system.
  • a laser rangefinder comprising a transmission module comprising optically coupled lasers and optical transmission system consisting of a telescope and two rotating wedges arranged in the exit of the telescope, a sighting receiving module comprising an objective, a first spectral divider mounted on the is housed at an angle, a device for observing the object image with a sighting mark provided in the focal plane of the lens, and a photo-receiving device optically coupled by means of the first spectral divider with the device for observing the object image, a collimator for the visible light arranged parallel to and rigidly connected to the radiation axis of the laser and optically coupled to the optical transmission system by means of two plane mirrors parallel to each other, each of which is a spectral divider, and a retroreflector, i it is used in the areas of the exit pupil of the transmission module and the entrance pupil of the visor-receiving module, so that the module can be led out of the light beam path (European-Asiatic Patent Jfe 00158
  • the device has many components that need to be tuned to function, but it is difficult to secure.
  • the probability of deviation of the visor module and the receiving module is quite high in the positioning of the rangefinder, since the angular field of the receiving module is usually the units of the angular minutes.
  • the sighting channel which is intended to observe the image of objects and to aim at them, does not guarantee the required image quality under severe weather conditions, especially at twilight, in the night and in the fog.
  • the visualization system comes closest, comprising an entrance opening intended to receive the radiation of the objects and an optical system comprising a visible radiation receiving channel, an infrared radiation channel and a channel of the laser rangefinder egg- ne laser radiation source, a photo-receiver and spectral divider, all channels are optically coupled to each other (WO 99/13355, Kl. G01S 17/02, 18.03.99).
  • the technical result achieved by the pending invention is the production of the visualization system, which makes it possible to measure the object distance as well as to sight at every day and night by the use of the infrared viewer, as well as to simplify the construction.
  • the technical result is in the claimed utility model by the production of the visualization system comprising an entrance opening intended to receive the radiation of the objects and an optical system consisting of a visible ray receiving channel, an infrared radiation channel and a channel of the laser rangefinder a laser radiation source, a photoreceiver and spectral divider, achieved, wherein all channels are optically coupled to each other, which according to the pattern is provided with an optical element made of a material which transmits the radiation in the working range of the photoreceptor, is inserted in the intended for the hermetizing of the system input port, while the receiving channel for the visible radiation and the infrared radiation channel as Optoelectronic multi-channel system are formed, which has at least two channels, which coincide optical axes and are located within the input opening.
  • the design of the visible radiation receiving channel and the infrared radiation channel as the multi-channel opto-electronic system makes it possible to downsize the outer dimensions of the system and to use one and the same objective for the extraction and reception of the laser beam.
  • optical element of zinc selenide or zinc sulfide ensures the wide passband, the low scattering factor, the high mechanical properties, the low price of the optical element.
  • the arrangement of the visible radiation receiving channel in front of the infra-red radiation channel and the collapse of its optical axes provides the opportunity to improve the quality of the image, increase the width of object detection and detection.
  • the arrangement of the optical axis of the laser radiation source, which passes through the optical element, at a distance to the optical axis of the multi-channel optoelectronic system parallel to this allows the laser beam To separate the device with the high intensity, which is directed by the device to the object, and the optoelectronic receiving system.
  • the optical element is designed with the opening intended for the output of the laser radiation.
  • the replacement of the visible radiation receiving channel in the visualization system with the two-channel optoelectronic system ensures the required image quality under severe weather conditions, especially at twilight, night and fog, as well as remote searching of the object of measurement.
  • Fig. 1 is the scheme of the visualization system, wherein the receiving channel for the visible radiation and the infrared radiation channel as a multi-channel optoelectronic system having at least two channels which coincide optical axes and are located within (in the regions of) the input aperture, the visible radiation channel being disposed in front of the infrared radiation channel;
  • Fig. 2 shows the visualization system in which the optical systems of the visible ray receiving channel and the infrared ray channel are superimposed and located on the one optical axis;
  • Fig. 3 is the scheme of the visualization system, in which the optical axis of the laser radiation source at a distance to the optical axis of the multi-channel optoelectronic system and is parallel to this, and the output laser beam also passes through the optical element.
  • the visualization system consists of a housing 1 having an entrance opening 2 intended for the radiation reception of the objects, an optical element 3 arranged in the entrance opening, and an optical system consisting of a visible radiation receiving channel 4, an infrared radiation channel 5 and the channel of a laser rangefinder 6 with a laser radiation source 14, a photoreceiver 7, spectral splitters 8, 9, all channels being optically coupled together.
  • the receiving channel for the visible radiation 4 and the infrared radiation channel 5 are as an optoelectronic multi-channel system with at least formed two channels, which opti- see axes (not shown in the drawings) coincide and are located within the matterssöffhung 2.
  • the channels work simultaneously.
  • the optical element 3 is made of a material which transmits the radiation in the working area of the photoreceptor and is intended for hermetizing the system.
  • the element can be used to correct the spectral composition of the input radiation.
  • zinc selenide or zinc sulfide can be used, which the wide passband, the low scattering coefficient, the high mechanical properties, the low price of the optical element and the secure high weather resistance.
  • the optical element 3 may have the shape of the circle or the parts of the circle, the oval, the rectangle or their combination.
  • Each channel of the multi-channel optoelectronic system has respective focusing devices 10 and 11 and the photoreceivers 12 and 13 necessary for image reception and image transmission to the display (it is possible to use the image interworking device).
  • the Femseh photocell matrix is commonly used, and as the photoreceiver 13 of the infrared Radiation channel 5, for example, the bolometer matrix is used without cooling.
  • any source of the coherent impulse radiation in the range of visible light and infrared light, in the pass band regions of the multi-channel photoelectric system for example, the semiconductor laser, the Nd-YAG solid-state laser or the He-Ne gas laser can be used become.
  • the light splitters may be arranged, which are implemented as a light-splitting plate 8 and / or 9 and housed between the photoreceiver of the channel of the laser rangefinder 7 and the photoreceptor 12 of the visible radiation channel 4.
  • each radiation sensor 7 is used, which is sensitive to the radiation spectrum of the laser.
  • the optical element 3 with the opening 15 is executed, which is responsible for the output of the laser radiation is determined. This achieves the separation of the high-intensity laser radiation, which is directed from the device onto the object, and the optoelectronic receiving system.
  • FIGS. 1 to 3 Three embodiments of the visualization system are possible, to which basic schemes in FIGS. 1 to 3 are disclosed.
  • the claimed visualization system has the following functions (FIG. 1,
  • the luminous flux passes from the object into the entrance opening 2 destined for the reception of the radiation of the objects and into the optical element 3 arranged in the opening, after which the luminous flux is transmitted to the entrance of the optical multi-channel system consisting of the visible radiation channel 4 and the infrared radiation channel 5, and enters the photoreceptor 12 of the visible (optical) channel and the photoreceptor 13 of the infrared radiation channel 5.
  • the optical axes of the photoreceptors 12, 13 are on the one optical axis coincident with the input port 2 of the system, the high image quality of both the thermal image and the visible image and achieves the high selectivity of the visualization system.
  • the output signal is fed to the display (not shown in the diagrams).
  • the sighting (the determination of the direction of the object) is based on the image of the object, which is formed on the display according to the information of the visible channel and heat channel (not shown in the drawing).
  • the laser rangefinder has the following functions:
  • the laser beam of the laser radiation source 14 is directed onto the object by the spectral splitters 8 and / or 9, the optical system of the visible ray channel 4 and the optical element 3.
  • the laser beam reflected from the object enters the input aperture 2 intended for the reception of the radiation and the optical element 3 arranged in this aperture, and thereafter this beam is transmitted to the input of the optical system consisting of the visible radiation receiving channel 4 and Channel of the laser rangefinder exists, and enters the respective photoreceptor 7 and 12th
  • the signals are processed by means of a computer (not shown in the drawing) and the result obtained is recorded and displayed.
  • the output radiation of the laser 14 is directed directly through the aperture 15 in the optical element 3 parallel to the optical axis of the multi-channel optoelectronic system onto the object, which reduces the total scattering of the radiation into the visual elements of the visualization system and minimizes the noise.
  • the stream of laser radiation reflected by the object enters the 2 and then this is processed by the same method described in the previous embodiments ( Figures 1, 2).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

L'invention concerne un système d'imagerie comprenant : un boîtier (1); une ouverture d'entrée (2) destinée à la réception du rayonnement des objets et un système optique, consistant en un canal de réception pour le rayonnement visible (4), en un canal de rayonnement infrarouge (5) et en un canal du télémètre à laser (6), ce dernier comprenant une source de rayonnement laser (14), un photorécepteur (7) et un diviseur spectral (8, 9), tous les canaux étant couplés ensemble optiquement. Ledit système d'imagerie comprend également un élément optique (3), réalisé en un matériau qui laisse passer le rayonnement dans la zone de travail des photorécepteurs et qui est utilisé pour l'ouverture d'entrée (2) destinée à l'hermétisation du système. Le canal de réception pour le rayonnement visible (4) et le canal de rayonnement infrarouge (5) sont configurés comme des systèmes optoélectroniques multicanaux, comportant au moins deux canaux dont les axes optiques concordent et se trouvent à l'intérieur de l'ouverture d'entrée (2).
EP12742940.5A 2011-10-11 2012-07-13 Système d'imagerie Withdrawn EP2601537A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12742940.5A EP2601537A1 (fr) 2011-10-11 2012-07-13 Système d'imagerie

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP2011005066 2011-10-11
PCT/IB2012/001393 WO2013054162A1 (fr) 2011-10-11 2012-07-13 Système d'imagerie
EP12742940.5A EP2601537A1 (fr) 2011-10-11 2012-07-13 Système d'imagerie

Publications (1)

Publication Number Publication Date
EP2601537A1 true EP2601537A1 (fr) 2013-06-12

Family

ID=48225192

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12742940.5A Withdrawn EP2601537A1 (fr) 2011-10-11 2012-07-13 Système d'imagerie

Country Status (1)

Country Link
EP (1) EP2601537A1 (fr)

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