JP2006189256A - Optical transmission system and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve irradiation accuracy of a laser beam to be irradiated to a target and also achieve reduction in size and weight of an optical transmission system as a whole. <P>SOLUTION: The optical transmission system 10 is constituted of both a base 11 to be mounted to a flying body such as aircraft and a system main body 12 supported rotatably on the base 11 in azimuth directions. The base 11 is provided with an azimuth-direction rotating bearing 13; an optical generating/transmitting device 14; and an optical axis correction data generating means 15. The azimuth-direction rotating bearing 13 is provided with an axis hole 13a for guiding a main laser beam (m) and a laser beam (g). The optical generating/transmitting device 14 generates the main laser beam (m). The optical axis correction data generating means 15 is provided with an photo-detector 20; an image processing device 21; and an optical axis correction processing device 22. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is mounted on a flying object such as an aircraft, so that a target can be captured and tracked by emitting laser light to a target in flight and receiving the reflected light. In particular, the present invention relates to an optical transmission system and an optical transmission method capable of improving the emission accuracy of laser light.

  Conventionally, this type of optical transmission system receives the infrared light from a target in flight to identify the position of the target and irradiates the specified target with laser light. Thus, an optical transmission system that can capture and track a target has been put into practical use. An example of such an optical transmission system is disclosed in Japanese Patent Application Laid-Open No. 2000-65497 (see Patent Document 1).

  Patent Document 1 shows an optical transmission system 1 configured to irradiate laser light e toward a target by receiving infrared light f from the target side as shown in FIG.

  The optical transmission system 1 includes a reflection mirror 2 that receives infrared light f from a target (missile) side, and a red mirror that captures the target by receiving infrared light f from the reflection mirror 2 via a dichroic mirror 3. An external light imager 4, a target position detector 5 that detects the position of the target from the video data imaged by the infrared light imager 4, and the reflection mirror 2 based on the position data detected by the target position detector 5 And a laser beam transmitter 7 that transmits a laser beam e that irradiates the target via the dichroic mirror 3 and the reflection mirror 2.

  As described above, according to the conventional optical transmission system 1, the position of the target is specified by receiving the infrared light f from the target in flight, and the specified target is irradiated with the laser beam e. To capture and track the target.

  However, according to the conventional optical transmission system 1, the reflected light of the infrared light f received from the target side and the laser light e from the target is configured to pass through the single reflection mirror 2.

  When an external force such as heat, vibration, acceleration, wind, gravity, or the like is applied to the casing that houses the optical transmission system 1, the casing may be deformed by the acting force.

  As a result, there is a possibility that the optical axis to the target ticket is shifted, and the irradiation accuracy of the laser beam e transmitted from the target position detector 5 or the laser beam transmitter 7 side is distorted.

In addition, since the infrared light f received from the target side and the reflected light from the target of the laser light e sent from the laser light transmitter 7 are received via the reflecting mirror 2, the infrared light from the reflecting mirror 2 is received. There existed a fault that the structure of the light guide path of f and the laser beam e was complicated and enlarged.
JP 2000-65497 A

  The present invention has been made in view of the above circumstances, and as an optical transmission system, it is possible to improve the irradiation accuracy of laser light irradiated to a target, and to reduce the size and weight of the entire optical transmission system. An object of the present invention is to provide an optical transmission system and an optical transmission method.

  In order to achieve the above object, according to the present invention, a laser light irradiation system for irradiating light in a desired target direction, a laser optical axis measurement system for measuring a management optical axis of the laser light irradiation system, and this As a result of measurement of the management optical axis by the laser optical axis measurement system, when the management optical axis is deviated, a laser beam transmission system having a laser optical axis correction system for correcting the deviation of the optical axis is provided. The laser beam irradiation system irradiates a target side with a light generation device, a light guide path including a reflection mirror group that guides the irradiation light output from the light generation device, and the irradiation light guided to the light guide path. The laser optical axis measurement system includes a measurement light generator, a light guide path including a reflection mirror for guiding measurement light output from the measurement light generator together with the irradiation light, and Measurements guided to the light guide A vertical reflection mirror provided perpendicular to the management optical axis of the light, and a photodetector provided to receive the measurement light reflected by the vertical reflection mirror group on the measurement light generator side The laser optical axis correction system includes optical axis correction data generating means for generating optical axis correction data for correcting optical axis deviation based on detection data of the measurement light detected by the photodetector, and the optical axis. There is provided an optical transmission system comprising a fine movement mirror driving unit for controlling the angle of the fine movement mirror of the fine movement mirror device based on correction data.

  In order to achieve the above object, according to the present invention, the step of guiding the irradiation light output from the light generating device of the laser light irradiation system to the fine mirror side through the light guide path having the reflection mirror and the dichroic mirror. Guiding the measurement light output from the measurement light generator of the laser optical axis measurement system to the vertical reflection mirror side through the light guide, and the measurement light reflected by the vertical reflection mirror A step in which light is guided back and forth along the optical path and guided to the photodetector side, a step of detecting a shift of the management optical axis by the photodetector that has received the guided measurement light, and a shift in the management optical axis. In some cases, in order to correct the deviation of the optical axis, a step of generating optical axis correction data by the optical axis correction data generation means, and a fine mirror driving unit based on the generated optical axis correction data The angle By comprising the steps of Gosuru, a to provide an optical transmission method comprising.

  According to the present invention, the aiming accuracy of the main laser light to be emitted toward the target side can be further improved, the aiming adjustment is easy and reliable, and further, the entire apparatus can be reduced in size and weight. it can.

  Therefore, it is possible to provide an extremely useful optical transmission system and optical transmission method when mounted on a flying object such as an aircraft.

  An embodiment of an optical transmission system according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a schematic diagram showing an embodiment of an optical transmission system 10 of the present invention.

  FIG. 2 is a schematic diagram showing a laser light transmission system of the optical transmission system 10 according to the present invention.

  The optical transmission system 10 includes a base 11 installed on a flying object such as an aircraft, and a system body 12 supported on the base 11 so as to be rotatable in the azimuth direction.

  As shown in FIG. 1, the base 11 includes an azimuth direction rotation bearing 13 that supports the system main body 12 so as to be rotatable in the azimuth direction, a light generation / transmission device 14, and an optical axis correction data generation unit 15. Prepare.

  The azimuth direction rotation bearing 13 is installed above the center part of the base 11, and is instruct | indicated on the base 11 so that the system main body 12 can rotate to an azimuth direction.

  The azimuth direction rotation bearing 13 is provided with a shaft hole 13a for guiding a main laser beam m and a guide laser beam g, which will be described later, at the center of the rotation axis.

  The light generation / transmission device 14 generates and outputs a main laser light m, a main laser generation device 16, a guide laser generation device 17, and the main laser light m and guides output from these devices 16 and 17. It consists of dichroic mirrors (wavelength selection mirrors) 18 and 19 for guiding the laser beam g.

  The main laser generator 16 is provided to generate main laser light m to be irradiated onto the target and to emit the main laser light m from the system main body 12 side to the target.

  The guide laser generator 17 is provided for the guide so that the measurement laser light g is generated for target aiming adjustment and the main laser light m can be accurately guided to the target.

  The dichroic mirrors 18 and 19 output the laser beams m and g of the main laser generator 16 and the guide laser generator 17 so that the main laser beam m and the guide laser beam g can be guided along the light guide path q. It is arranged on the end side.

  In addition, the optical axis correction data generation means 15 includes a photodetector 20, an image processing device 21, and an optical axis correction processing device 22.

  The photodetector 20 includes a matching mirror 25 that detects the optical axis position of the main laser beam m, and a CCD (charge coupled device) 26 as an optical image detector that displays the optical axis position.

  The photodetector 20 generates detection data h1 at the focal point coordinates (detection coordinates s, (s ′)) of the light detected by the CCD 26, and transmits a detection data signal h1 ′ including the detection data h1. It has become.

  As shown in FIG. 1, the photodetector 20 is provided in a position in the base 11 where the guide laser light g passing through the dichroic mirrors 18 and 19 on the light transmitting / sending device 14 side is received. It is done.

  As shown in FIG. 3A and FIG. 4A, the photodetector 20 detects the guide laser beam g without deviation on the management optical axis z determined in advance as the optical transmission system 10. In this case, two cases are detected when they are detected out of position.

  FIG. 3A illustrates a case where the guide laser light g incident on the management optical axis z does not shift.

  When the guide laser beam g is not deviated from the management optical axis z, the detection coordinate s of the guide laser beam g appears on the center coordinate p on the pixel surface of the CCD 26 as shown in FIG. It becomes like this.

  Further, as shown in FIG. 4A, when the guide laser light g is deviated from the management optical axis z, as shown in FIG. On the pixel surface of the CCD 26, a detection coordinate s ′ indicating that light is received in the direction of deviation from the center coordinate p appears.

  As shown in FIGS. 3B and 4B, the CCD 26 obtains coordinate data of the center coordinate p and the detected coordinate s (s ′) of the received guide laser beam g, as shown in FIGS. As shown, detection data h1 based on this coordinate data is transmitted by a detection data signal h1 ′.

  The light detector 20 is not limited to the matching mirror 25, and can be used in place of a collimator (lens) (not shown) having a function of narrowing the beam of the guide laser light g.

  The image processing device 21 receives the detection data signal h1 ′, generates image data h2, and transmits an image data signal h2 ′ including the image data h2.

  The optical axis correction processing device 22 receives the image data signal h2 ′, generates optical axis correction data h3, and transmits optical axis correction data h3 ′ including the optical axis correction data h3. .

  On the other hand, the system main body 12 includes a dome-shaped casing 30 (only part of which is shown) supported on the base 11, a pair of device frames 31 housed in the casing 30, and the device frame 31. The support frame 32 supported rotatably in the elevation direction, the device group 33 provided in the support frame 32, and the main laser beam m and the guide laser beam g transmitted from the base 11 side. The light guide path q guides light to the device group 33 side.

  The bottom of the casing 30 is fixed to the azimuth direction rotation bearing 13 of the base 11 and is provided so as to be rotatable in the azimuth direction.

  The apparatus frame 31 includes a pair of stand portions 31a that stand on both sides from the bottom portion of the casing 30, and a pair of elevation direction rotation bearings 34 that are respectively provided inside the stand portion 31a.

  The support frame 32 is supported by a pair of elevation direction rotation bearings 34 so as to be rotatable in the elevation direction, and includes a device group 33.

  In the support frame 32, a device group 33 including various devices is provided.

  In addition, a shaft hole 34a is formed in one of the elevation direction rotation bearings 34 installed between the pair of apparatus frame bodies 31 and the support frame body 32, and this shaft hole 34a serves as the main laser beam m and the guide. A part of the light guide path q for guiding the laser beam g is formed.

  The main laser beam m and the guide laser beam g are guided from the base 11 side to the device group 33 side through the light guide path q.

  The device group 33 includes an infrared light imager 35 having a function of receiving infrared (laser) light, and fine movement that irradiates the main laser light m while aiming at a target imaged by the infrared light imager 35. The mirror device 36 and a reflected light receiver 37 that receives the reflected laser light m1 reflected from the target side by the main laser light m irradiated from the fine movement mirror device 36 and measures the azimuth and distance of the target. .

  The device group 33 is aimed at the target side and irradiates the target side with a disturbing wave with respect to the laser light irradiated from the target side. The infrared light a emitted from the target side by the infrared light imager 35 a. Is detected, the direction of the target is recognized, and infrared laser light (hereinafter referred to as main laser light m) is irradiated from this fine movement mirror device 36 to this direction, while the irradiated main laser light m is received as reflected light. The device 37 receives light as reflected laser light m1 from the target.

  Further, the device group 33 will be described in detail. The infrared image pickup device 35 receives the infrared light a emitted from the target side to detect the direction of the target, and based on the detected direction data, the fine movement mirror device 36. Irradiation laser light m is sent to the head.

  The fine movement mirror device 36 receives the main laser light m transmitted from the base 11 and simultaneously irradiates the target with the main laser light m so that the target can be captured and tracked.

  Specifically, the fine movement mirror device 36 first captures infrared light a in a 3 to 5 μm (middle infrared wavelength band) band with a plume (a high temperature object such as exhaust gas) emitted from a target, for example, a missile, It has a function of detecting the azimuth of the target and irradiating the main laser beam m to this azimuth when the azimuth is detected.

  The reflected light receiver 37 has a distance measuring function that receives the reflected laser light m1 reflected from the target side and measures the distance to the target.

  The light guide path q is formed in a space that bypasses from the bottom of the casing 30 of the system body 12 along the side wall of the casing 30 and is guided into the support frame 32.

  The light guide path q is provided in a space that detours along the wall surface of the casing 30 from the lower part of the base 11 and reaches the inside of the support frame 32, and the azimuth direction rotation bearing 13 of the base 11. A reflection mirror group 40 (40a to 40c) provided at a position detouring the device frame 31 from a position facing the shaft hole 13a, and a dichroic mirror 41 provided in the support frame 32 are configured.

  The light guide path q is sent from the base 11 side, reflects the main laser light m and the guide laser light g by the reflection mirrors 40a to 40c, and is guided to the dichroic mirror 41 side.

  Further, the main laser light m and the guide laser light g guided into the support frame 32 through the light guide path q are branched in two directions by the dichroic mirror 41.

  One guide laser beam g is transmitted through the dichroic mirror 41 and guided to the vertical reflection mirror 42, and the other main laser beam m is reflected by the dichroic mirror 41 and guided to the fine movement mirror device 36. .

  As shown in FIG. 1, the optical transmission system 10 includes a laser light transmission system 45 that guides the main laser light m from the base 11 side to the device group 33 side through the light guide path q. In the transmission system 45, the main laser beam m is guided along the management optical axis z.

  The laser light transmission system 45 includes a laser light irradiation system A that irradiates the main laser light m, and a laser optical axis measurement system that measures the laser optical axis of the main laser light m by the photodetector 20 of the optical axis correction data generation means 15. B and a laser optical axis correction system C that corrects the laser optical axis when the laser optical axis of the main laser light m deviates from the management optical axis z.

  The laser beam irradiation system A includes a main laser generator 16 as a light generator, a reflection mirror group 40 that guides the main laser light m output from the main laser generator 16 along the management optical axis z, and a dichroic. The light guide path q includes a mirror 41, and a fine movement mirror device 36 that irradiates the main laser light m guided to the light guide path q to the target side.

  The fine movement mirror device 36 includes a fine movement mirror 36a that directly irradiates the target with the main laser beam m, and a fine movement mirror drive unit 36b that drives the fine movement mirror 36a so that the direction of the fine movement mirror 36a is aimed at the target.

  The laser optical axis measurement system B guides the guide laser generator 17 as a measurement light generator and the guide laser light g output from the guide laser generator 17 in common with the main laser light m. The light guide path q including the reflection mirror group 40, the vertical reflection mirror 42 installed so as to face the management optical axis z in the light guide path q, and the guide laser light g reflected by the vertical reflection mirror 42 And a photodetector 20 provided on the base 11 side so as to receive light at a position upstream of the light guide path q.

  Further, the laser optical axis correction system C includes optical axis correction data generation means 15 that generates laser optical axis correction data h3.

  The optical axis correction data generating means 15 receives the photodetector 20, the image processing device 21 that receives the detection data h1 output from the photodetector 20, generates and outputs image data h2, and the image data h2. The optical axis correction processing device 22 is configured to receive, generate and output optical axis correction data h3.

  Further, the azimuth direction rotation bearing 13 that supports the system body 12 and the elevation direction rotation bearing 37 that supports the support frame body 32 on the device frame 31 of the system body 12 are driven by a motor that is driven by control means (not shown). It is designed to be rotated.

  Since the optical transmission system 10 includes the laser light transmission system 45, the target (target object) in flight can be accurately irradiated with the main laser light m to be captured and tracked.

  Next, the operation of the optical transmission system 10 will be described with reference to FIGS.

  When a flying object equipped with the optical transmission system 10 receives infrared light a emitted from a target such as a missile, the infrared light imager 35 captures and captures the infrared light a.

  The infrared image pickup device 35 performs orientation analysis of the target on the screen.

  Based on the analysis result of this azimuth, the laser light irradiation system A, the laser optical axis measurement system B, and the laser optical axis correction system C of the laser light transmission system 45 are sequentially operated.

  That is, when the laser light irradiation system A of the laser light transmission system 45 is first operated, the main laser light m having a predetermined output for irradiating the target is transmitted from the base 11 side to the device group 33 side.

  The fine movement mirror device 36 of the device group 33 receives the main laser light m by the fine movement mirror 36a, and at the same time reflects it to irradiate the direction of the target.

  The irradiated main laser beam m is reflected from the target side, and the reflected laser beam m1 which is the reflected wave is received by the reflected light receiver 37 of the device group 33.

  The reflected light receiver 37 detects the received reflected laser light m1 and measures the azimuth and range of the target.

  As a result of the azimuth and distance measurement with respect to the target, the main laser beam m is irradiated from the fine movement mirror device 36 while the main laser beam m captures and tracks the target.

  Next, the laser optical axis measurement system B of the laser light transmission system 45 is activated.

  That is, the guide laser generating device 17 of the light transmitting / transmitting device 14 is operated, and the guide laser light g output from the guide laser generating device 17 is transmitted to the light guide path q.

  The guide laser light g sent to the light guide path q is reflected perpendicularly to the incident management optical axis z by the vertical reflection mirror 42 and guided in the reverse direction of the light guide path q, that is, the return path direction.

  The guide laser beam g output from the guide laser device 17 reciprocates in the light guide path q, thereby detecting the deviation of the management optical axis z of the guide laser beam g.

  If there is no deviation as a result of this detection, the center coordinate p on the pixel surface of the CCD 26 and the detection coordinate s overlap as shown in FIG.

  Therefore, the laser optical axis measurement system B does not operate.

  On the other hand, when the shift of the management optical axis z is detected, as shown in FIG. 4B, the detection coordinate s ′ appears in a shooting star shape at a position shifted from the center coordinate p on the pixel surface of the CCD 26.

  In this state, the main laser light m emitted from the fine movement mirror 36a is misaligned with respect to the target as indicated by a dotted arrow m ′ in FIG.

  The photodetector 20 that has detected the detection coordinate s ′ that appears in the shape of a shooting star generates a detection data signal h1 ′ that includes the detection data h1, and transmits the detection data signal h1 ′ to the image processing device 21 side.

  Receiving the detection data signal h1 ′, the image processing device 21 generates optical axis correction data h3 and transmits an optical axis correction data signal h3 ′ including this data to the fine movement mirror device 36 side.

  Receiving the optical axis correction data signal h3 ′, the fine movement mirror device 36 generates correction angle data h4, and based on this data h4, operates the fine movement mirror drive unit 36b to correct the mirror surface of the fine movement mirror 36a to a desired angle. Let

  Therefore, the main laser beam m ′ irradiated from the fine movement mirror 36a can be accurately irradiated to the target as the main laser beam m whose irradiation direction is corrected.

As described above, when a deviation occurs in the management optical axis z of the main laser beam m output from the main laser generator 16, the main laser beam m output from the main laser generator 16 of the laser beam irradiation system is <Step 1> for guiding light to the fine mirror 36a side through a light guide path q having the reflecting mirror group 40 and the dichroic mirrors 18, 19 and 41
<Step 2> for guiding the guide laser light g output from the guide laser light generator 17 of the laser optical axis measurement system B to the vertical reflection mirror 42 side through the light guide path q;
The guide laser light g reflected by the vertical reflecting mirror 42 is guided back and forth through the light guide path q and guided to the photodetector 20 side <Step 3>;
The photodetector 20 that has received the guide laser beam g detects the deviation of the optical axis with respect to the management optical axis z <Step 4>;
When the optical axis is deviated, in order to correct this optical axis deviation, the optical axis correction data generation means 15 generates the optical axis correction data h3 <Step 5>;
Based on the generated optical axis correction data h3, the fine movement mirror drive unit 36b controls the angle of the fine movement mirror 36a <Step 6>, thereby adjusting the directivity of the main laser light m with respect to the target. I do.

  As described above, according to the optical transmission system 10, when adjusting the directivity of the main laser light m, the guide laser light g is guided in the same light guide path q as the main laser light m in accordance with the same optical axis direction. I try to let them.

  Accordingly, since the deviation of the management optical axis z of the main laser beam m is detected by detecting the deviation of the management optical axis z of the guide laser beam g, a special means for correcting the management optical axis z is required. It can be realized without doing.

  As shown in FIG. 5, the laser optical axis measurement system B of the laser light transmission system 45 of the optical transmission system 10 has an optical axis that passes through the dichroic mirror 41 provided at the end of the light guide path q on the fine movement mirror 36a side. It may have a configuration provided as a laser optical axis measurement system B1 in which the photodetector 20 is installed on the extended line.

  That is, even in the laser beam axis measurement system B1 in which the guide laser beam g output from the guide laser generator 17 detects the shift of the management beam axis z of the guide laser beam g only by the forward path of the light guide path q. Good.

  In the case of the laser optical axis measurement system B, when the laser optical axis measurement system B1 is adopted, the deviation of the optical axis with respect to the management optical axis z due to only the forward path of the light guide path q is detected. In contrast, when there is a deviation in the management optical axis z, the deviation is halved.

  Therefore, if the detection accuracy of the photodetector 20 is the same, the detection amount for the deviation is halved.

  Therefore, when this laser optical axis measurement system B1 is adopted, for example, the pixel density of the CCD 26 of the photodetector 20 can be improved without reducing the detection accuracy.

  The other configuration of the laser optical axis measurement system B1 is the same as that of the laser optical axis measurement system B shown in FIG.

When this laser optical axis measurement system B1 is employed, the guide laser light g output from the guide laser generator 17 in the case of the laser optical axis measurement system B is used as the vertical reflection mirror 42 via the light guide q. Guiding to the side <Step 2>;
The guide laser light g reflected by the vertical reflecting mirror 42 is guided back and forth through the light guide path q and guided to the photodetector 20 side <Step 3>;
The management optical axis z is received by the photodetector 20 which has received the guide laser beam g guided in a reciprocating manner.
There are no steps <Step 2> to <Step 4> in <Step 4> for detecting the deviation of the optical axis with respect to, and the following steps <Step 2> and <Step 3> are added.

That is, in the case of the laser optical axis measurement system B, the guide laser light g output from the guide laser generator 17 is guided to the photodetector 20 side through the light guide path <Step 2>;
Each step of <Step 3> in which the optical detector 20 that has received the guide laser light g detects a deviation in the direction of the management optical axis z.

  Therefore, when this laser optical axis measurement system B1 is adopted, the optical axis correction data generation means 15 can be provided on the system main body 12 side, so that the installation site of the optical axis correction data generation means 15 and the device group 33 is determined. The data signal wiring can be made easier and more reliable.

  Further, the laser optical axis measurement system B of the laser light transmission system 45 of the optical transmission system 10 may be configured as a laser optical axis measurement system B2 as shown in FIG.

  In other words, the dichroic mirrors 18 and 19 may be provided with dichroic mirror driving units 46a and 46b for finely adjusting the directions of the dichroic mirrors 18 and 19.

  According to the configuration of this measurement system B2, as compared with the configuration of the laser optical axis measurement system B1, the direction of the dichroic mirrors 18 and 19 on the light transmitting / sending device 14 side (rather than fine adjustment of the fine movement mirror 36a ( (Tilt angle) is finely adjusted.

  Further, when the laser optical axis measurement system B2 is employed, fine adjustment of the directions of the dichroic mirrors 18 and 19 of the main laser generator 16 and the guide laser generator 17 can be arbitrarily performed.

  Therefore, mutual adjustment and management of the optical axes of both mirrors 18 and 19 are not required, and fine adjustment can be performed as necessary when the optical transmission system 10 is used.

  That is, the optical axis correction data h3 output from the optical axis correction processing device 22 side of the laser optical axis correction system C is a dichroic mirror drive unit 46a that finely adjusts the directions of both mirrors 18 and 19 of the light transmitting / sending device 14. And 46b can be corrected, and at least one of the dichroic mirror driving units 46a and 46b can be finely adjusted simultaneously or individually.

  The other configuration and operation of the laser optical axis measurement system B2 are the same as those of the laser optical axis measurement system B shown in FIG.

  Further, according to the optical transmission system 10, the shift of the management optical axis z of the main laser light m can be detected by the guide laser light g using the light guide path q of the main laser light m. .

  Therefore, when the main laser beam m is irradiated to the target side, the control optical axis z can be easily and reliably adjusted, and no special device or means is required, and the overall size and weight can be reduced. In particular, it is suitable for use on a flying object such as an aircraft.

  Furthermore, according to the optical transmission system 10, the light guide path q for guiding the main laser light m and the guide laser light g forms a plurality of locations in the light guide direction at substantially right angles, and this right angle portion (corner portion) is formed. The reflection mirror group 40 and the dichroic mirror 41 are arranged. However, it is not necessary to form a plurality of locations in the light guide direction substantially at right angles, for example, providing more than 90 ° or even smaller. Can do.

  For example, when the angle is greater than about 90 ° (not shown), the light guide path q can be formed elongated along the optical path direction.

  In addition, for example, when the angle is less than about 90 ° (not shown), the light guide path q can be formed short along the light guide direction.

  Accordingly, the shape / structure of the light guide path q is made long or short in accordance with the restrictions on the installation place of the optical transmission system 10 and the shape / structure of the system main body 12 itself. Can be designed by appropriately selecting whether to be intermediate.

1 is a schematic diagram showing an embodiment of an optical transmission system according to the present invention. 1 is a schematic diagram showing a laser light transmission system in an optical transmission system according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows the state which detected light normally with the photodetector used for the optical transmission system which concerns on this invention, (a) is a schematic diagram which shows the light guide state in a photon detection means, (b) is light The front view of CCD which displays the result of having detected light by a detection means. BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows the state which detected abnormality by the photodetector used for the optical transmission system which concerns on this invention, (a) is a schematic diagram which shows the light guide state in a photodetector, (b) is light detection. The front view of CCD which displays the result of having detected the light with a device. The schematic diagram which shows other embodiment of the laser beam transmission system in the optical transmission system which concerns on this invention. The schematic diagram which shows other embodiment of the laser beam transmission system in the optical transmission system which concerns on this invention. Schematic diagram showing a conventional optical transmission system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Optical transmission system 11 Base 12 System main body 13 Azimuth direction rotation bearing 13a, 34a Shaft hole 14 Light transmission and transmission apparatus 15 Optical axis correction data generation means 16 Main laser generator (light generator)
17 Guide laser generator (measurement light generator)
18, 19, 41 Dichroic mirror (wavelength selection mirror)
20 Photodetector 21 Image processing device 22 Optical axis correction processing device 25 Matching mirror (optical axis analyzing means)
26 CCD
DESCRIPTION OF SYMBOLS 30 Casing 31 Apparatus frame 31a Stand part 32 Support frame 32a Through-hole 33 Device group 34 Elevation direction rotation bearing 35 Infrared imaging device 36 Fine movement mirror apparatus 36a Fine movement mirror 36b Fine movement mirror drive part 40 (40a-40c) Reflection mirror Group 42 Vertical reflection mirror 45 Laser light transmission systems 46a, 46b Dichroic mirror drive unit A Laser light irradiation systems B, B1, B2 Laser optical axis measurement system C Laser optical axis correction system a Infrared light a1 Reflected laser light h1 (h1 ' ) Detection data (signal)
h2 (h2 ') Image data (signal)
h3 (h3 ') Optical axis correction data (signal)
h4 Correction angle data q Light guide path m Main laser light (irradiation light)
m1 Reflected laser beam g Guide laser beam (measurement beam)
p Center coordinates s, s' Detection coordinates z Management optical axis

Claims (13)

As a result of the measurement of the management optical axis by the laser beam irradiation system that irradiates light in the direction of the desired target, the laser beam measurement system that measures the management beam axis of the laser beam irradiation system, and the laser beam measurement system, A laser beam transmission system having a laser beam axis correction system for correcting the shift of the optical axis when the management optical axis is shifted;
The laser beam irradiation system includes a light generation device, a light guide path including a reflection mirror group that guides irradiation light output from the light generation device, and irradiation light irradiated to the light guide path toward the target side. And a fine movement mirror device,
The laser optical axis measurement system includes a measurement light generator, a light guide including a reflection mirror that guides the measurement light output from the measurement light generator together with the irradiation light, and the light is guided to the light guide. A vertical reflection mirror provided perpendicular to the management optical axis of the measurement light, and a photodetector provided to receive the measurement light reflected by the vertical reflection mirror by the measurement light generator;
The laser optical axis correction system includes optical axis correction data generating means for generating optical axis correction data for correcting optical axis deviation based on detection data of the measurement light detected by the photodetector, and the optical axis correction. An optical transmission system comprising: a fine movement mirror driving unit for controlling an angle of the fine movement mirror of the fine movement mirror device based on data. In the laser light transmission system, light generated from each of the light generation device of the laser light irradiation system and the measurement light generation device of the laser optical axis measurement system is guided through a reflection mirror group of a common light guide path. The optical transmission system according to claim 1, wherein the optical transmission system is configured as described above. 2. The optical transmission system according to claim 1, wherein the light generation device of the laser light irradiation system is a main laser light generation device that generates an infrared laser. 2. The optical transmission system according to claim 1, wherein the fine movement mirror device of the laser light irradiation system includes a fine movement mirror and a fine movement mirror driving unit for controlling an angle of the fine movement mirror. 2. The optical transmission system according to claim 1, wherein the measurement light generator of the laser optical axis measurement system is a guide laser generator. 2. The optical transmission system according to claim 1, wherein the photodetector of the laser optical axis measurement system is composed of a combination mirror and CCD. The laser optical axis correction system includes optical axis correction data generating means for generating optical axis correction data for correcting optical axis deviation based on detection data detected by a photodetector, and fine movement based on the optical axis correction data. The optical transmission system according to claim 1, further comprising a fine movement mirror driving unit that controls an angle of the fine movement mirror of the mirror device. The laser optical axis correction system includes optical axis correction data generating means for generating optical axis correction data for correcting optical axis deviation based on detection data detected by a light detector, and optical axis correction data based on the optical axis correction data. The dichroic mirror drive part provided so that adjustment of each reflection angle of the dichroic mirror which reflects the irradiation light and measurement light which are output from a generator and a measurement light generator is possible is provided. Optical transmission system. The optical axis correction data generating means of the laser optical axis correction system generates an image data based on the detection data detected by the photodetector of the laser optical axis measurement system, and the image processing apparatus generates the optical data The optical transmission system according to claim 1, further comprising an optical axis correction processing device that generates optical axis correction data based on the image data. Guiding the irradiation light output from the light generation device of the laser light irradiation system to the fine mirror side through a light guide having a reflection mirror and a dichroic mirror;
Guiding the measurement light output from the measurement light generator of the laser optical axis measurement system to the vertical reflection mirror side through the light guide;
The measurement light reflected by the vertical reflecting mirror is guided back and forth through the light guide, and guided to the photodetector side;
Detecting a shift of the management optical axis by a photodetector that receives the guided measurement light; and
A step of generating optical axis correction data by the optical axis correction data generating means in order to correct the shift of the optical axis when there is a shift in the management optical axis;
And a step of controlling the angle of the fine movement mirror by the fine movement mirror driving unit based on the generated optical axis correction data. Guide the measurement light output from the measurement light generator of the laser optical axis measurement system to the vertical reflection mirror side through the light guide and the measurement light reflected by the vertical reflection mirror through the light guide The steps of reciprocating and guiding the light to the photodetector side are as follows:
11. The optical transmission according to claim 10, wherein the measurement light output from the measurement light generator of the laser optical axis measurement system is guided to a photodetector provided at the forward path end of the light guide. Method. The step of controlling the angle of the fine movement mirror by the fine movement mirror driving unit is as follows:
The optical transmission method according to claim 10, wherein the angle of the dichroic mirror is controlled by a dichroic mirror driving unit of the light generation device and the measurement light generation device. The optical transmission method according to claim 10, wherein the light transmission method is formed to be elongated or short along the optical path direction by adjusting an installation angle of the reflection mirror and the dichroic mirror provided in the light guide path.

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