KR20160150083A - System for generating light curtain using light source of high energy - Google Patents

Abstract

The present invention relates to a system for forming a light curtain by using a high-energy light source. The system comprises a first light path through which beams radiated by a high-energy light source are guided to an edge of a polygonal diffusion member; a second light path through which the guided beams are spread within the diffusion member to form a plane covering a predetermined angle range; and a third light path through which the beams having passed through the second light path are emitted out of the diffusion member and extend so as to form a light curtain. According to the present invention, beams emitted by the high-energy light source are diffused and form the light curtain, and thus light and heat from the outside can be blocked. Furthermore, the light curtain can be formed by using a single laser light source, and thus a configuration of a device can be simplified and costs required to manufacture the device can be reduced compared to a device using a conventional technology, which requires using a plurality of laser light sources. Moreover, the system can be applied to a stop-line guiding device, thereby preventing a traffic accident from occurring.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an optical curtain forming system using a high energy light source,

The present invention relates to a system for separating high energy beams to form a curtain film of light.

In the summer, indoor temperatures can rise sharply due to strong sunlight transmitted through buildings and automobile clear glass windows. These sunlight also contains a lot of ultraviolet rays harmful to the skin.

In recent years, a method of attaching a light shielding film to a window to block infrared rays and ultraviolet rays flowing through a window is used. However, when the film is attached to the window, there is a problem that the sunlight is blocked not only in the summer but also in the winter. In other words, it is advantageous for energy efficiency to increase the room temperature by irradiating a lot of sunlight in the room in winter, but there is a problem in that the conventional technology can not perform such a function.

In addition, when the inside is bright and the outside is dark, the inside of the room, which is a bright place, can not be seen easily, and the inside of the room is bright. To solve this problem, attach a dark film to the window or attach a separate blind or curtain.

The ultimate goal of blinds and curtains is to block rays of light from the outside to prevent sunlight from entering into the interior, or to block the gaze from the outside to the inside. However, blinds and curtains must block the window every time it is necessary to shut off the outside light, and when the sunlight comes in through the window or when looking outdoors, the curtains or blinds covering the window must be removed again, There is a disadvantage that the lifetime can not be guaranteed due to abrasion and noise due to use, the breakage of the connecting portion, and the like, and most of them are caused by human manipulation.

In order to solve these problems, a technique has been developed in which a light-shielding film is formed to prevent external light from entering the interior or to prevent the interior from being visible from the outside.

Patent Document 1 discloses a light-shielding film device which is installed at an upper end of a window, an entrance or the like and reflects light generated thereby to form a shielding film. However, in order to utilize this, there is a problem that the number of light sources must be large and mirrors having a specific shape must be disposed around the light source, so that the volume of the device becomes large and the production cost increases.

Korean Patent No. 10-0257944

SUMMARY OF THE INVENTION It is an object of the present invention to provide an optical curtain forming system for forming an optical curtain film by diffusing a beam of a high energy light source.

Another object of the present invention is to provide a stop line guide device for applying a light curtain forming system to a traffic light to guide a stop of the vehicle by forming a light curtain film between the vehicle and the crosswalk when the stop signal is generated.

It is an object of the present invention to provide a diffractive optical element having a first optical path in which a beam irradiated from a high energy light source is guided to one corner of a polygonal diffusing member and a second optical path in which a guided beam spreads to form a plane And a third optical path through which the beam passing through the second optical path is emitted to the outside of the diffusing member and forms a curtain film, can be achieved by providing a light curtain forming system using a high energy light source.

According to a preferred aspect of the present invention, the high energy light source has a variable output of 250 mW or more.

According to another preferred aspect of the present invention, the high energy light source has a variable wavelength.

According to another preferred feature of the present invention, the first optical path is provided with a beam splitter for separating the beam irradiated from the light source, and a reflector for guiding the separated beam to one corner.

It is another object of the present invention to provide a method of manufacturing a diffusing member which includes a first optical path guided to a side of a cylindrical diffusion member by a beam irradiated from a high energy light source and a second optical path guided to a side of the cylindrical diffusion member, And a third optical path through which the beam passing through the second optical path is emitted to the outside of the diffusing member and forms a curtain film, can be achieved by providing a light curtain forming system using a high energy light source.

According to a preferred feature of the present invention, a beam splitter for separating the beam irradiated from the light source and a reflector for guiding the separated beam to one corner are disposed in the first optical path.

It is another object of the present invention to provide an apparatus for guiding a stop line of a vehicle attached to a traffic light, comprising a high energy light source and an optical curtain forming system for forming a light curtain film by using a beam irradiated from a high energy light source And the optical curtain forming system includes a first optical path guided by a beam irradiated from the high energy light source to one corner of the polygonal diffusing member and a second optical path guided by the guided beam spreading to form a plane within a certain angle range in the diffusing member, And a third optical path through which the beam passing through the second optical path is emitted to the outside of the diffusion member to form a light curtain film.

According to a preferred feature of the present invention, the stop line guide device further includes a sensor formed on the road surface and sensing a beam through the third optical path.

According to a preferred aspect of the present invention, the stop line guide device further includes a communication unit for transmitting a photographing signal to the camera when the beam sensed by the sensor is disconnected.

It is another object of the present invention to provide a light curtain generating system that forms a light curtain superimposed on a glass of the vehicle, And a control section for driving the light curtain device for a vehicle.

According to another aspect of the present invention, there is provided a light source module, comprising: a frame formed to surround an area; a first light curtain forming module mounted on an edge of the frame and diffusing a beam of the high- And a reflector formed on the inner surface of the frame so as to reflect the diffused beam in the same plane as the light curtain.

According to a preferred feature of the present invention, there is further provided a second optical curtain forming module mounted on the other edge of the frame to form a light curtain in the one area.

According to another preferred feature of the present invention, the first optical curtain forming module and the second optical curtain forming module generate light curtains of different wavelengths.

According to the optical curtain forming system using a high energy light source according to the present invention, a beam of a high energy light source is diffused to form an optical curtain, thereby blocking light and heat from the outside.

In addition, according to the optical curtain forming system using the high energy light source according to the present invention, a high energy laser having a single wavelength can be diffused by irradiating the corners of the diffusion member. The optical curtain can be formed by using one laser light source, so that the configuration of the device can be simplified and the manufacturing cost can be lowered compared with the technology in which a plurality of laser light sources have been conventionally used.

Further, according to the stop line guide device according to the present invention, a light curtain can be formed up to the stop line to clearly identify the point where the vehicle driver must stop. This makes it possible to prevent traffic accidents in advance.

1 is a conceptual view illustrating a state of use of an optical curtain according to an embodiment of the present invention;
2 is a side cross-sectional view of the apparatus shown in Fig.
3 is a conceptual diagram illustrating the principle of an optical curtain forming system according to an embodiment of the present invention;
4 is a conceptual view from above of the device shown in Fig.
5 is a conceptual diagram of a light curtain forming system according to another embodiment of the present invention.
6 is a conceptual diagram of an optical curtain forming system according to another embodiment of the present invention;
7 is a conceptual diagram of a stop wire guide device to which the optical curtain forming system of the present invention is applied.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood, however, that the embodiments described below are only for explanation of the embodiments of the present invention so that those skilled in the art can easily carry out the invention, It does not mean anything. In describing various embodiments of the present invention, the same reference numerals are used for components having the same technical characteristics.

Fig. 1 is a conceptual view showing the use state of a light curtain according to an embodiment of the present invention, and Fig. 2 is a side sectional view of the apparatus shown in Fig. 1. Fig.

Referring to FIGS. 1 and 2, the optical curtain forming system 200 may be mounted at one corner of the window frame 150. The optical curtain forming system 200 may be formed to overlap with the outer glass 110 to block light or heat that has flowed through the glass.

Although the optical curtain forming system 200 is mounted on the window frame 150 for the sake of convenience of explanation, the present invention is for convenience of description and the concept of the present invention can be applied to any place where light can be blocked have.

For example, the system can be applied to the windshield of a vehicle to block light or heat. If the headlight illuminance of the opposite vehicle at night is above the set light, the system will operate to form a light curtain on the windshield of the vehicle to reduce the amount of incoming light.

More specifically, light curtain forming system 200 may include a light sensing sensor. The control unit forms a light curtain that overlaps the vehicle glass based on the intensity of light or the amount of light sensed by the sensing sensor. The control unit can change the intensity or wavelength of the light curtain based on the signal sensed by the sensing sensor. For example, when the sensing sensor senses light of the first wavelength, the wavelength of the beam forming the light curtain is also formed to the first wavelength, and when the sensing sensor senses the light of the second wavelength, And the wavelength can also be formed at the second wavelength. As another example, when the outside of the vehicle is bright, the light curtain has a strong strength, and when the outside of the vehicle is dark, the light curtain may be weakly formed.

Referring again to FIG. 1, a light curtain forming system 200 is mounted at one corner of the frame 150. The light curtain forming system 200 disperses the high energy beam in various directions in one plane to form the light curtain 130. In FIG. 1, the direction of the beam is indicated by three arrows so that it can be easily understood that the beams are dispersed. In practice, the beam is not split into three paths and is not split, but has continuity and is distributed over the entire light curtain surface to fill the surface.

According to another embodiment of the present invention, the second optical curtain forming system 200 may be mounted on the other corner of the frame 150. The second optical curtain forming system 300 may use beams of different colors from the optical curtain forming system 200 described above. That is, the two systems form light curtains of different wavelengths to reflect or scatter light of different wavelengths. According to this, it is also possible to adjust the color of the light curtain by superimposing two light curtains on the same plane.

A reflector may be mounted on the frame surface facing the corner where the light curtain forming system 200 is mounted. Particularly, a part of the dispersed light emitted from the optical curtain forming system 200 is incident on the first surface 151 and then reflected to be incident on the third surface 153, And may be incident on the second surface 152. Likewise, some of the dispersed light may be first incident on the third surface 153 and then reflected and incident on the other surface. The efficiency of the optical curtain can be improved through the process of reflecting the dispersed light.

The light curtain forming system 200 may include an illumination sensitivity sensor. The controller compares the illuminance sensed by the illuminance sensitivity sensor with the illuminance set to automatically turn on / off the light source or adjust the output of the light source.

The optical curtain forming system 200 may include a temperature sensor. The controller compares the sensed temperature with the set temperature through the temperature sensor to automatically turn on or off the light source or adjust the output of the light source.

FIG. 3 is a conceptual view for explaining the principle of the optical curtain forming system 200 according to an embodiment of the present invention, and FIG. 4 is a conceptual view from above of the apparatus shown in FIG.

Referring to FIGS. 3 and 4, an optical curtain forming system 200 according to an embodiment of the present invention includes a high energy light source 210 and a polygonal diffusion member 220.

The polygonal diffusion member 220 may be glass or modification having two or more optical planes.

A lens having a specific color may be disposed between the diffusion member 220 and the light source 210. The lens can be made in various colors such as red and green. The color of the light curtain may be changed by changing the color of the beam irradiated by the light source 210 according to the color of the lens.

It is also possible to change the refractive index of the diffusion member 220 to change the area of the light curtain.

The high energy light source 210 may be a laser formed into a single wavelength. Generally, a laser is composed of a beam of a single wavelength, which makes it impossible to disperse through a prism. However, in the present invention, the optical path is changed without making the laser enter the optical plane of the prism, thereby separating the laser beam into a plane. That is, in the present invention, it is possible to obtain the effect of substantially dispersing the high energy laser beam. Herein, the term " dispersion of laser " includes not only a dispersion in the dictionary meaning but also an effect similar to the effect that a laser beam is separated on a plane to disperse multi-wavelength light through a prism.

The beam irradiated from the light source 210 is guided to one corner of the diffusion member 220 through the first optical path I. The beam guided to the edge through the first optical path I is emitted to the outside of the diffusion member 220 through the second optical path II. The second optical path II refers to a path through which a beam introduced into an edge spreads within a certain angle range within the diffusion member 220.

The beam passing through the second optical path II is emitted through one surface 226 of the diffusing member 220 and diffused to a wider range due to the difference in refractive index between the diffusing member 220 and the air. That is, the beam traveling through the diffusing member is in accordance with the Snell's law angle of incidence (θ ₁ The refracting angle? ₂ becomes larger than the refracting angle? ₂ . The third optical path III means a light surface on which light emitted through one surface 226 of the diffusion member 220 travels.

3, the edge of the diffusion member 220 extends in the vertical direction (Y-axis direction), and the output beam 131 extends in the horizontal direction (X-axis direction) Increasing the energy of the light source 210 produces a light surface formed as a beam in the third optical path III between the output beam 131 and the diffusing member 220. The optical surface thus formed is referred to as a light curtain.

5 is a conceptual diagram of an optical curtain forming system 200 according to another embodiment of the present invention.

Referring to FIG. 5, the diffusion member 220 may be formed of a cylindrical glass or quartz.

According to this embodiment, it is possible to form a light curtain which is denser than the light curtain shown in Fig.

Specifically, the beam irradiated from the light source 210 is guided to one side of the diffusion member 220 through the first optical path I. The beam incident on one point of the diffusion member 220 through the first optical path I is emitted to the outside of the diffusion member 220 through the second optical path II. The second optical path II refers to a path through which the introduced beam spreads within a certain angle range within the diffusion member 220.

The beam passing through the second optical path II is emitted through the other side of the diffusion member 220 and the range of spreading due to the difference in refractive index between the diffusion member 220 and air is narrowed. That is, even in the case of this embodiment according to the Snell's law angle of incidence (θ _{1 2} , the diffusing member 220 has a cylindrical shape, so that the beam emitted to the other side is concentrated in a narrower area than that of the embodiment of FIG.

6 is a conceptual diagram of a light curtain forming system 200 according to another embodiment of the present invention.

Referring to FIG. 6, a beam splitter 230 and a mirror 240 may be disposed in the first optical path I. FIG.

The beam splitter 230 separates a part of the beam of the first optical path I and proceeds along the fourth optical path. The mirror 240 guides the beam separated by the beam splitter 230 to one edge 221 of the diffusion member 220.

The beam incident on the edge of the diffusion member 220 through the fourth optical path is emitted to the outside of the diffusion member 220 through the fifth optical path. The fifth optical path is a path through which the introduced beam spreads within a certain angle range within the diffusion member 220.

The beam passing through the fifth optical path is emitted through one surface 226 of the diffusing member 220 and spreads to a wider range due to a difference in refractive index between the diffusing member 220 and air.

That is, according to the present embodiment, two light curtains parallel to each other are formed by one high energy light source 210. A plurality of light curtains are formed so as to overlap with each other, so that an external light beam is blocked in a double manner, thereby enabling more efficient heat shielding or light shielding.

7 is a conceptual diagram of a stop wire guide apparatus to which the optical curtain forming system 200 of the present invention is applied.

Referring to FIG. 7, the stop line guide device is mounted on the signal lamp 400 to guide the stop of the vehicle by forming a light curtain 130 between the crosswalk and the vehicle in a stop signal.

The stop line guide device includes a high energy light source 210 and an optical curtain forming system 200.

The optical curtain forming system 200 may have the structure described with reference to Figs. 3 to 6 above. For example, the optical curtain forming system 200 includes a first optical path I in which the beam irradiated from the high energy light source 210 is guided to one corner of the polygonal diffusing member 220, A beam passing through the second optical path (II) and the second optical path (II) spreading to form a plane of a certain angle range in the second optical path (220) is emitted to the outside of the diffusion member (220) And the third optical path III.

In addition, the stop line guide device may further include a sensor formed on the road surface. The sensor detects the break of the beams that make up the light curtain.

The stop line guide device may include a control unit and a communication unit. The control unit controls the driving of the stop line guide device based on the operation of the signal lamp (400). For example, the control unit drives the light source 210 of the light curtain forming system 200 to form a light curtain between the signal light 400 and the road surface when the walking light is turned on to the signal light 400.

The communication unit transmits the signal detected by the sensor to another device. For example, when a signal that the optical curtain film is disconnected is detected through the sensor, the communication unit may transmit a signal to the camera installed on the road so as to photograph the vehicle.

According to another embodiment of the present invention, the optical curtain forming system 200 of the present invention may be formed to replace curtains of the stage. In a conventional stage facility, curtains were used to keep the stage preparation process between the film and the film open to the audience. However, the curtains used in the stage are troublesome to install the curtains because they are large in size and weight, and there are inconveniences that the curtains need to be walked for a long time and the personnel must be input.

According to the present invention, a light curtain forming system 200 can be mounted on top of a stage to easily form a light curtain that covers the stage if necessary. It is possible to form and extinguish the light curtain in a short period of time, and it is possible to realize a more efficient stage environment since no additional manpower is input.

According to the optical curtain forming system 200 using the high energy light source 210 according to at least one embodiment of the present invention, the beam of the high energy light source 210 is diffused to form an optical curtain, It is possible to block light and heat from the outside.

In addition, since the high energy laser having a single wavelength can be diffused by irradiating the edge of the diffusion member 220, the structure of the apparatus can be simplified and the manufacturing cost can be lowered compared to a technique in which a plurality of conventional laser light sources 210 have to be used .

In addition, according to the stop line guide device according to at least one embodiment of the present invention, the light curtain can be formed up to the stop line to clearly identify the point where the vehicle driver must stop. This makes it possible to prevent traffic accidents in advance.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

110: glass 130: light curtain
131: Output beam 150: Frame
151: first side 152: second side
153: Third surface 210: Light source
220: diffusion member 221: corner
230: beam splitter 240: mirror
400: Traffic light I: 1st optical path
II: Second optical path III: Third optical path
IV: fourth optical path V: fifth optical path
VI: sixth optical path

Claims (15)

A first optical path in which the beam irradiated from the high energy light source is guided to one corner of the polygonal diffusion member;
A second optical path in which the guided beam spreads so as to form a plane within a certain angle range in the diffusion member; And
And a third optical path through which the beam passing through the second optical path is emitted to the outside of the diffusion member and the surface forms an expanded optical curtain film. The method according to claim 1,
Wherein the high energy light source is a laser having a variable power of 250 mW or more. The method according to claim 1,
Wherein the high energy light source has a variable wavelength. The method according to claim 1,
Wherein the first optical path is provided with a beam splitter for separating a beam irradiated from the light source and a reflecting mirror for guiding the separated beam to the one corner. A first optical path in which the beam irradiated from the high energy light source is guided to one side of the cylindrical diffusion member;
A second optical path in which the guided beam spreads so as to form a plane within a certain angle range in the diffusion member; And
And a third optical path through which the beam passing through the second optical path is emitted to the outside of the diffusion member and the surface forms an expanded optical curtain film. The method of claim 5,
Wherein the first optical path is provided with a beam splitter for separating a beam irradiated from the light source and a reflecting mirror for guiding the separated beam to the one corner. 1. An apparatus for guiding a stop line of a vehicle attached to a traffic light,
High energy light source; And
And a light curtain forming system for forming a light curtain film using the beam irradiated from the high energy light source,
The optical curtain forming system includes:
A first optical path in which the beam irradiated from the high energy light source is guided to one corner of the polygonal diffusion member;
A second optical path in which the guided beam spreads so as to form a plane within a certain angle range in the diffusion member; And
And a third optical path through which the beam passing through the second optical path is emitted to the outside of the diffusion member and the surface forms an expanded optical curtain film. The method of claim 7,
Further comprising a sensor formed on the road surface and sensing a beam passing through the third optical path. The method of claim 8,
Further comprising a communication unit for transmitting a photographing signal to the camera when the beam detected by the sensor is disconnected. A sensor for sensing light entering from outside the vehicle;
A light curtain generating system to form a light curtain superimposed on the glass of the vehicle; And
And a control unit for driving the light curtain generating system based on detection of the sensor. The method of claim 10,
The optical curtain producing system includes a first optical path guided by a beam irradiated from a high energy light source to one corner of a polygonal diffusing member and a second optical path guided by the second beam spreading to form a plane And a third optical path through which the beam passing through the optical path and the second optical path is emitted to the outside of the diffusion member and the surface forms an expanded optical curtain film. A frame formed to surround one region; And
And a first light curtain forming module mounted on an edge of the frame and diffusing a beam of the high energy light source to form a light curtain in the one region. The method of claim 12,
And a reflector formed on an inner surface of the frame so as to reflect the diffused beam in the same plane as the light curtain. The method of claim 12,
Further comprising a second optical curtain forming module mounted on the other edge of the frame to form a light curtain in the one area. 15. The method of claim 14,
Wherein the first light curtain forming module and the second light curtain forming module generate light curtains of different wavelengths.

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