JPH10132923A - Laser beam repeater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laser beam repeater in which deceptive laser lights are effectively diffused against a missile which is guided by irradiated pulse laser light by rotating automatically a diffusing surface on which deceptive laser lights are diffused. SOLUTION: The device is equipped with a beam detecting element 2 which identifies wave length of input beam and converts the input light to electric signals to output, a determining circuit 3 which determines whether the input light is a pulse laser beam, and measures a coming direction and coming timing of the pulse laser light, a laser beam generator 4 which generates deceptive laser light 5 in synchronism with the pulse intervals of the pulse laser beam 1 irradiated by the determining circuit 3 and a diffuser 7 which diffuses the deceptive laser light 5 output from the laser beam generator 4 according to information such as coming direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser light repeater device, and more particularly to a laser light repeater device that generates deceptive laser light corresponding to pulsed laser light irradiated in the field and diffuses it. is there.

[0002]

2. Description of the Related Art Conventionally, this type of laser light repeater is disclosed in Japanese Patent Publication No. 61-36188.
The configuration is such that pulsed laser light emitted outdoors is detected, pulsed laser light synchronized with the detected pulsed laser light and a pulse interval is generated, and the pulsed laser light is diffused over a wide range.

Hereinafter, the configuration will be specifically described with reference to FIG. In FIG. 3, the irradiated pulse laser beam 1
Is converted into an electric signal by the light detecting element 2, and the determination circuit 3 determines whether or not the laser beam is a pulse laser light based on the electric signal from the light detecting element 2. The deceptive laser light 5 is generated by the laser light generator 4 from the output of the determination circuit 3 determined to be the pulsed laser light, and the mirror laser 12 irradiates the deceptive laser light 5 to the object 13 on the ground surface. Is spread over a wide range. Thus, the sensor of the missile 9 guided by the irradiated pulse laser beam has an effect of causing the false laser beam 8 diffused to be erroneously guided.

[0004]

In the above-mentioned prior art, the deceptive laser beam is not always diffused sufficiently in the direction of the missile guided by the laser beam emitted depending on the state of the object on the ground surface. In order to obtain a sufficient effect, it is necessary to judge the situation of the object on the ground surface and always search for an effective object, so that the object on the ground surface is irradiated with deceptive laser light, thereby diffusing the deceptive laser light A problem arises in that the deceptive laser light cannot be diffused over a wide range only by performing the above operation.

An object of the present invention is to solve the above-mentioned problems by automatically rotating and directing a diffusion surface for diffusing a deceptive laser beam in the direction of the irradiated laser beam, and by applying the pulse laser beam to the irradiated pulse laser beam. It is an object of the present invention to provide a laser light repeater device capable of effectively diffusing deceptive laser light with respect to guided missiles.

[0006]

According to the present invention, a light detecting means for identifying a wavelength of input light, converting the input light into an electric signal and outputting the electric signal, and determining whether or not the input light is a pulse laser light. Discriminating means for discriminating and measuring the arrival direction and arrival timing of the pulsed laser light, and laser light generation for generating a deceptive laser light synchronized with a pulse interval of the irradiated pulsed laser light by an output from the discriminating means. And a diffusing means for diffusing the deceptive laser light output from the light generating means in accordance with the information on the direction of arrival of the measured pulsed laser light. A device is obtained.

Further, according to the present invention, the diffusing means includes a diffusing surface driving means for rotating the diffusing surface portion in the direction of arrival of the irradiated pulse laser light determined by the determining means. A characteristic laser light repeater device is obtained.

Further, according to the present invention, the angle range over which the diffusion surface portion is rotated by the diffusion surface driving means is within a range of about ± 90 degrees around the arrival direction of the irradiated pulse laser light. A characteristic laser light repeater device is obtained.

Further, according to the present invention, the diffusing surface portion is formed on the left and right sides of the arrival direction of the pulsed laser beam.
A laser light repeater device is provided which is a convex mirror which diffuses the deceptive laser light only in a range of 0 to 80 degrees and a few degrees to an upper angle of about 80 degrees.

[0010]

The presence of the irradiated pulse laser light is detected by light detecting means for converting the irradiated pulse laser light into an electric signal and outputting the electric signal. The arrival direction of the pulsed laser light irradiated by the output from the light detection means is determined, and
Means for generating a pulse laser beam in synchronization with the pulse interval generates a false laser beam for a missile induced by the pulse laser beam.

On the other hand, based on information on the direction of arrival of the pulsed laser light, deception generated in the apparatus by means for directing the diffusion surface for diffusing the deceptive laser light generated in the apparatus in the direction of arrival of the irradiated pulsed laser light. The laser light is diffused in the arrival direction of the irradiated pulse laser light.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows an embodiment of the present invention. In FIG. 1, the light detecting element 2 identifies the wavelength of the irradiated input light, converts the input light into an electric signal, and outputs the electric signal to the determination circuit 3. Upon receiving the output signal from the light detection element 2, the determination circuit 3 determines whether or not the input light to the light detection element 2 is a pulsed laser light. The arrival direction and timing of the pulsed laser light are measured.
FIG. 1 is a diagram when the input light is pulsed laser light.

When the determination circuit 3 determines that the input light to the light detecting element 2 is the pulse laser light 1, the laser light generator 4 receives the determination and causes the laser light generator 4 to detect the pulse laser light detected by the light detecting element 2. A deceptive laser light 5 synchronized with the light 1 is generated. The deceptive laser beam 5 is transmitted by the optical path 6 to the diffuser 7
It is led to. As shown in FIG. 2, the diffuser 7 has a diffusion surface drive unit 11 that rotates a diffusion surface 10 in the diffuser 7 toward the arrival direction of the pulse laser light 1. Diffusing surface 10
Are 6 right and left around the arrival direction of the pulsed laser light 1.
A convex mirror that diffuses the deceptive laser light only in the range of 0 to 80 degrees and several degrees below to about 80 degrees is used.

The deceptive laser beam 5 is transmitted through an optical path 6 to a diffuser 7
To the diffusion surface 10 (see FIG. 2). The diffusion range of the diffused deceptive laser light 8 is about ± 90 degrees around the arrival direction of the irradiated pulsed laser light 1.

[0015]

According to the present invention, the missile guided by the irradiated pulse laser beam comes from ± 60 degrees to ± 80 at most around the arrival direction of the irradiated pulse laser beam. The provision of the diffuser makes it possible to effectively diffuse the deceptive laser light at a certain position with respect to the missiles that fly by being guided by the irradiated pulse laser light.

Further, since a sensor of a missile which is guided by the irradiated pulse laser beam and has a certain fixed field of view, when an object on the ground surface is irradiated with a deceptive laser beam and diffused, the missile is detected. The disadvantage that the deceptive laser light is diffused outside the field of view and the deceptive laser light does not work effectively can be overcome.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is an internal structural diagram of the diffuser of FIG. 1;

FIG. 3 is a block diagram showing an embodiment of the related art.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 pulse laser light 2 photodetector 3 judgment circuit 4 laser light generator 5 deceptive laser light 6 optical path 7 diffuser 8 diffused deceptive laser light 9 missile 10 diffusion surface 11 diffusion surface drive unit

Claims (4)

[Claims] 1. A light detecting means for identifying a wavelength of an input light, converting the input light into an electric signal and outputting the electric signal, determining whether the input light is a pulse laser light, and arriving direction of the pulse laser light. Discriminating means for measuring an arrival timing, a laser light generating means for generating a deceptive laser light synchronized with a pulse interval of the irradiated pulse laser light by an output from the discriminating means, and an output signal from the light generating means. A laser beam repeater device comprising a diffusing means for diffusing the deceptive laser beam according to information on the direction of arrival of the measured pulse laser beam. 2. The apparatus according to claim 1, wherein said diffusing means includes a diffusing surface driving means for rotating a diffusing surface portion in a direction of arrival of the radiated pulse laser light determined by said determining means. The laser light repeater device as described in the above. 3. An angle range in which the diffusion surface driving means rotates the diffusion surface portion is approximately ± 90 degrees around the arrival direction of the irradiated pulse laser light. Or the laser light repeater device according to 2. 4. The diffusing surface portion is a convex mirror that diffuses the deceptive laser light only in a range of about 60 degrees to 80 degrees left and right and several degrees below and about 80 degrees above the arrival direction of the pulse laser light. The laser beam repeater device according to claim 2 or 3, wherein: