KR102616292B1 - Optical apparatus with window cleaning machanism - Google Patents

Abstract

An optical device equipped with a window cleaning mechanism is disclosed. The optical device is an optical device equipped with a window through which light transmits on the front part of the case. The case is equipped with a cleaning body having a brush for cleaning the surface of the window, and the window and the cleaning body are moved relative to each other to clean the cleaning body. The surface of the window is cleaned with a brush. According to this optical device, the window can be automatically cleaned periodically at a certain time, or the degree of foreign matter contamination of the window can be continuously checked to automatically clean the window when the contamination level reaches a certain level, or to effectively remove moisture on the window. , the configuration for performing the window cleaning function is very simple, making it easy to manufacture and reducing manufacturing costs. At the same time, it can be applied to optical devices with various types of cases, improving the efficiency of the optical device and improving performance. It can be maintained.

Description

OPTICAL APPARATUS WITH WINDOW CLEANING MACHANISM}

The present invention relates to an optical device equipped with a window cleaning mechanism. More specifically, in an optical device having a window through which light transmits, the performance of the optical device can be improved by always keeping the window clean, and the wavelength of transmitted light can be selected to improve the performance of the optical device. This relates to an optical device equipped with a window cleaning mechanism that can improve the performance of the optical device.

In general, optical devices such as LIDAR (Light Detection And Ranging) devices that detect surrounding terrain or objects in cars or mobile robots, vehicle headlights, and surveillance cameras have light that penetrates the front of the case of the device. There is a window, and this window must always be kept clean to maintain good performance of the device.

For example, a LiDAR optical device is a device that fires pulsed laser light into the atmosphere and uses its reflector or scatterer to measure distance or atmospheric phenomena. The time measurement of the reflected light is calculated using clock pulses, and its frequency It has a resolution of 5m at 30MHz and 1m at 150MHz.

Therefore, by radiating laser light to the surrounding area and using the time and intensity of the reflected light that is reflected by the surrounding objects or terrain, it is possible to measure the distance, speed, and shape of the measurement object or precisely scan the surrounding objects or terrain. There is.

However, if foreign substances such as dust adhere to the window through which the laser light passes during operation of the LiDAR optical device, the transmission and reception efficiency of the laser light decreases, resulting in the problem that object detection performance cannot be maintained.

In addition, in the case of vehicle headlights, contaminants such as dirt and dust easily attach to the windows while driving, which reduces illumination performance, and in the case of surveillance cameras, there is a problem of low resolution, which reduces identification ability.

Furthermore, in the case of a lidar optical device installed with a headlight, when there is moisture such as moisture on the outer or inner surface of the front transmission window of the headlight or optical device, the transmitted light of the optical device is scattered or is not transmitted properly. . In this way, when moisture occurs in the transmission window of the LiDAR optical device, light transmittance decreases, which reduces the reliability of the optical device.

The present invention is intended to solve the above-described conventional problems, and its purpose is to provide an optical device having a window through which light transmits, to automatically clean the window periodically at a certain time or to continuously check the degree of foreign matter contamination of the window. The aim is to provide an optical device equipped with a window cleaning mechanism that can maintain the performance of the optical device in good condition by improving light transmission efficiency by automatically cleaning the window when the contamination level reaches a certain level.

Another object of the present invention is to simplify the configuration of the window cleaning device, making it easy to manufacture and reducing manufacturing costs. It can also be easily applied to optical devices with various types of cases, and improves window cleaning efficiency. The aim is to provide an optical device equipped with a window cleaning mechanism that can increase the

Another object of the present invention is to provide an optical device equipped with a window cleaning mechanism that can maintain light transmittance by effectively removing moisture or moisture from the outer or inner surface of the window.

In order to achieve the above object, the present invention provides an optical device having a window through which light passes through a front portion of a case, comprising: a cleaning body having a brush for cleaning the surface of the window; and a cleaning body having a brush for cleaning the surface of the window. It is characterized by an optical device equipped with a window cleaning mechanism that moves the cleaning body and the cleaning body relative to each other so that the surface of the window is cleaned by the brush of the cleaning body.

In addition, the present invention is characterized by an optical device equipped with a window cleaning mechanism in which the cleaning body is fixedly installed in the case, and the window is installed in the case so as to move with respect to the cleaning body.

In addition, in the present invention, the movement of the window is achieved by an electric motor provided in the case, a first gear fixed to the motor shaft of the electric motor and rotating, and the first gear formed on the window. It is characterized by an optical device equipped with a window cleaning mechanism made by meshing circular second gears.

In addition, the present invention is characterized by an optical device equipped with a window cleaning mechanism in which the window is fixedly installed in the case, and the cleaning body is installed in the case so as to move with respect to the window.

In addition, in the present invention, the movement of the cleaning body is achieved by an electric motor provided in the case and a rotating arm that is connected between the motor shaft of the electric motor and the cleaning body and transmits the rotational force of the electric motor to the cleaning body. It is characterized by an optical device equipped with a window cleaning mechanism.

In addition, in the present invention, the movement of the cleaning body includes an electric motor provided in the case, a first pulley rotatably installed in the case, a second pulley installed on the motor shaft of the electric motor, and the first pulley. It is characterized by an optical device equipped with a window cleaning mechanism consisting of a belt connecting a second pulley and a rotating arm connected between the first pulley and the cleaning body to transmit the rotational force of the electric motor to the cleaning body.

In addition, in the present invention, the driving of the electric motor is controlled by a control unit, and the control unit is characterized in an optical device equipped with a window washing mechanism that drives the electric motor for a predetermined time when turning on or off the starting device of the vehicle. There is.

In addition, in the present invention, the driving of the electric motor is controlled by a control unit, and the control unit operates the electric motor when the reception rate of the laser light detected by the reception rate detection sensor that is connected to the laser module unit and detects the reception rate of the laser light is below the standard value. It is characterized by an optical device equipped with a window cleaning mechanism that operates for a predetermined period of time.

In addition, in the present invention, the operation of the electric motor is controlled by a control unit, and the control unit drives the electric motor for a predetermined time when contamination is detected from a contamination detection sensor provided in the case to detect contamination of the window. It is characterized by an optical device equipped with a cleaning mechanism.

In addition, in the present invention, the cleaning body has a cleaning medium supply chamber formed therein, and a fine hole leading from the cleaning medium supply chamber to the brush, and cleans the cleaning fluid or compressed air from a cleaning fluid supply device or compressed air supply device provided in the vehicle. It is characterized by an optical device equipped with a window cleaning mechanism that is supplied to the medium supply chamber and ejected toward the brush through the micro hole.

In addition, in the present invention, the surface of the window is characterized by a hybrid nano-coated optical device equipped with a window cleaning mechanism.

In addition, in the present invention, the optical device further includes a transparent film installed on the surface of the window, and the transparent film has a heat-generating function and is equipped with a window cleaning mechanism.

In addition, the present invention is characterized by an optical device equipped with a window cleaning mechanism that further includes a coating layer installed on the transparent film, wherein the coating layer includes a hard coating layer.

According to the optical device equipped with the window washing mechanism of the present invention having the above characteristic configuration, for example, in the case of a lidar optical device installed in a vehicle to detect surrounding terrain or objects, the vehicle's ignition device is turned on and off. You can always keep the window in a clean state by periodically cleaning the window, or by automatically cleaning the window when contamination is detected on the surface of the window or when the reception rate of the laser light is detected to be reduced.

As a result, the transmission and reception efficiency of laser light is improved, so that the object detection performance of the lidar optical device can always be maintained in good condition. In the case of vehicle headlights, the brightness of light can be maintained in good condition, and in the case of surveillance cameras, the shooting performance can be maintained in good condition. It has the effect of maintaining the resolution of the image clearly.

In addition, the present invention can effectively clean foreign substances on the window with the brush of the cleaning body while spraying cleaning liquid or compressed air, and the relative movement of the cleaning body or window for cleaning is very simple, making it easy to manufacture and manufacture. It is an industrially useful invention that not only reduces unit costs, but can also be applied to cases of various shapes, including cylindrical or semi-cylindrical optical device cases.

In addition, the present invention can effectively remove moisture such as moisture existing on the window by installing a transparent film with a heating function on the outer or inner surface of the window, thereby maintaining light transmittance and reliability of the device. can be secured.

In addition, the present invention may include a coating layer additionally installed on the transparent film installed on the outer and/or inner surface of the window, and the coating layer is installed to selectively transmit light in a specific wavelength range, so that the lidar optical device and Likewise, there is an advantage in that the input and output of light can be effectively processed in a configuration that irradiates light from the inside of the device to the outside and receives reflected light from the outside to the inside.

Figure 1 is a perspective view showing a lidar optical device according to a first embodiment of the present invention.
Figure 2 is a perspective view showing the inside of the case in Figure 1 with part of the case removed.
Figure 3 is a perspective view showing the movement configuration of a window in the lidar optical device according to the first embodiment of the present invention.
Figure 4 is a plan view showing the inside of the case in Figure 1 with the upper part removed.
Figure 5 is a block diagram showing the control configuration of the electric motor in the lidar optical device according to the present invention.
Figure 6 is a perspective view showing a lidar optical device according to a second embodiment of the present invention.
Figure 7 is a perspective view partially showing the movement configuration of the cleaning body in the lidar optical device according to the second embodiment of the present invention.
Figure 8 is a perspective view showing a lidar optical device according to a third embodiment of the present invention.
Figure 9 is a perspective view showing the movement configuration of the cleaning body in the lidar optical device according to the third embodiment of the present invention.
Figure 10 is a diagram for explaining the configuration of a window in a lidar optical device according to a fourth embodiment of the present invention.
FIGS. 11 and 12 are diagrams for explaining a modified example of the configuration of the window of FIG. 10.
Figure 13 is a diagram for explaining the configuration of a window in the lidar optical device according to the fifth embodiment of the present invention.

Hereinafter, an optical device equipped with a window cleaning mechanism according to the present invention will be described in detail based on the accompanying drawings.

1 to 5 show the first embodiment of the present invention, which is an example of an optical device equipped with a window through which light transmits on the front part of the case, and is a lidar optical device installed in a vehicle to detect surrounding terrain or objects. It shows the device. One of the two cleaning bodies 10 in FIG. 2 is shown to be partially cut to expose its interior.

Referring to Figures 2 and 4, the lidar optical device includes a laser module unit (1) that transmits and receives a laser, and a mirror unit (2) that reflects the laser transmitted from the laser module unit (1) in the case (4). ) It is provided inside.

In addition, the front part of the case 4 is provided with a window 5 for transmitting the internal laser light to the outside and the laser light reflected from the outside to the inside, and the case 4 on both ends of the window 5 ) is provided with a cleaning body 10 for cleaning the surface of the window 5, and one surface of the cleaning body 10 is provided with a brush 11 that contacts the surface of the window 5.

Therefore, cleaning the window 5 by the cleaning body 10 involves cleaning the window 5 and the cleaning body 10 while the brush 11 of the cleaning body 10 is in contact with the surface of the window 5. This is achieved by moving them relative to each other so that foreign substances attached to the surface of the window 5 are removed by the brush 11 of the cleaning body 10.

In the first embodiment, as shown in FIGS. 1 to 4, the case 4 of the lidar optical device is made in a cylindrical shape, and a window 5 on the front of the case 4 forms a part of the cylindrical case 4. This is the case. In this case, the cleaning body 10 of the cleaning body 10 is fixedly installed in the case 4, and the window 5 is installed in the case 4 so as to move with respect to the cleaning body 10. It can perform a cleaning function.

That is, the cleaning body 10 can be arranged vertically in the cylindrical case 4 and formed integrally with the case 4, or manufactured separately and fixedly installed using a fixing means. The brush 11 is provided on one side of the cleaning body 10 and is brought into contact with the surface of the window 5. The vertical length of the brush 11 is formed to be at least longer than the height of the window 5 so that the entire surface of the window 5 can be cleaned.

In the first embodiment, it is shown that two cleaning bodies 10 are arranged at 180-degree intervals, but this is not limited to this, and the arrangement interval can be changed depending on the circumference of the window 5, and also 1 It may also be provided with only two cleaning bodies (10).

As shown in FIGS. 3 and 4, the window 5 is moved inside the case 4, and the bottom of the window 5 is formed in a circular rail groove on the bottom of the case 4. By being movably fitted along (4a), the window 5 can be rotated with respect to the cleaning body 10 fixedly installed in the case 4.

In addition, it is desirable that the window 5 is automatically cleaned by rotating and moving the electric motor 21 as a power source. The electric motor 21 is provided on the inner bottom of the case 4, and the electric motor 21 The first gear 22 is fixed to the motor shaft of ), and the first gear 22 is inscribed at the bottom of the window 5 to form a circular second gear 23 that engages with the electric motor 21. ), the window 5 is guided to the circular rail groove 4a so that it can be rotated in the forward, reverse, or any one direction.

Therefore, the brush 11 of the cleaning body 10, which is in contact with the surface of the window 5, touches the surface of the window 5 due to rotational movement of the window 5 in the forward or reverse direction or rotational movement in any one direction. Foreign substances can be removed by washing.

At this time, the cleaning body 10 is provided with a cleaning medium supply chamber 12 and a micro hole 13 leading from the cleaning medium supply chamber 12 to the brush 11 inside the cleaning body 10, and a cleaning medium supply chamber is provided on the upper surface of the cleaning body 10. An inlet 14 is formed within (12) through which a cleaning medium such as cleaning liquid or compressed air can be introduced, and the inlet 14 can be opened and closed with a rubber stopper 15.

According to this configuration, the cleaning liquid is charged into the cleaning medium supply chamber 12 through the inlet 14, and the cleaning liquid filled in the cleaning medium supply chamber 12 is supplied toward the brush 11 through the micro hole 13, thereby forming the brush. Along with the cleaning of (11), the surface of the window (5) can be cleaned more thoroughly with the cleaning solution.

In addition, when connecting the supply line 8 of the cleaning fluid supply device 6 and the compressed air supply device 7 provided in the vehicle as shown in Figure 2 to the inlet 14 of the cleaning body 10, the cleaning fluid supply device ( The cleaning solution can be continuously supplied from 6) or compressed air can be continuously supplied from the compressed air supply device (7), and thus, along with cleaning the brushes (11), the cleaning solution is directed toward the brushes (11) through the microholes (13). Alternatively, compressed air can be powerfully ejected to more thoroughly remove foreign substances on the surface of the window 5, thereby further improving cleaning efficiency.

Meanwhile, it is desirable to coat the surface of the window 5 with a hybrid nano coating material. The hybrid nano coating material is a colorless and transparent coating material that prevents both hydrophobic and hydrophilic dirt. It disperses fine particles of hydrophobic fluororesin on the surface of the window 5 at intervals smaller than the dirt particles. Therefore, even if either hydrophilic or hydrophobic dirt adheres, it is in an unstable state as it comes in contact with both the hydrophilic and hydrophobic parts of the coating, so the dirt is easily removed by airflow, moisture, vibration, etc., reducing the cleaning efficiency of the window 5. It can be raised.

Since the hydrophilic material on the surface of the window 5 removes static electricity, the adhesion of dirt due to electrification can also be suppressed. As a result, cleanliness is maintained and performance degradation due to adhesion of dirt can be suppressed, further improving the cleaning efficiency of the window 5. Moreover, since the hybrid nano coating film is colorless and transparent, it does not impair designability. .

Figure 5 is a block diagram showing the control configuration of the electric motor 21, and the driving of the electric motor 21 is controlled by the control unit 30.

For example, when turning on the vehicle's ignition device 31 (On) or turning off the vehicle's ignition device 32 (Off), the control unit 30 periodically drives the electric motor 21 for a predetermined period of time to open the window ( 5) By cleaning, the detection performance of the LiDAR optical device can always be maintained in good condition.

As another example of operation of the control unit 30, the reception rate detection sensor 32, which is connected to the laser module unit 1 and is designed to detect the reception rate of the laser light, is connected to the control unit 30, and the reception rate detection sensor 32 detects When the reception rate of the laser light is received by the control unit 3 and is below a preset standard value, it is determined that the window 5 is contaminated with foreign substances, and the electric motor 21 is driven for a predetermined time to clean the window 5. By doing so, the detection performance of the lidar optical device can be maintained at a good level.

In addition, a contamination detection sensor 33 is provided in the case 4 to detect contamination of the window 5 and is connected to the control unit 30. When contamination is detected from the contamination detection sensor 33, the control unit 30, Detection performance can be maintained in good condition by driving the electric motor 21 for a predetermined period of time to clean the window 5.

6 and 7 show an optical device equipped with a window cleaning mechanism according to a second embodiment of the present invention. As in the first embodiment, the case 104 is cylindrical and the window 105 is a cylindrical case. In the lidar optical device of the type constituting a part of (104), the window (105) is fixedly coupled to the case (104), and the cleaning body (110) is connected to the case (104) so as to move with respect to the window (105). The configuration installed is different from the first embodiment described above.

In addition, the specific configuration of the cleaning body 110, the cleaning medium supply configuration, and the control configuration of the electric motor 121, which will be described later, are the same as those of the first embodiment, so the same reference numerals are assigned to overlapping configurations, and the specific configuration and operation are performed. The explanation is omitted. In Figure 7, the configuration of the cleaning body 110, the electric motor 121, the rotating arm 122, the guide protrusion 111, and the brush 11 are shown in perspective.

In the second embodiment, the cleaning body 110 is moved by placing the cleaning body 110 outside the case 104 and forming guide protrusions 111 on the top and bottom of the cleaning body 110, The cleaning body 110 can be rotated with respect to the window 105 by being movably fitted along the circular rail grooves 104a formed around the upper and lower periphery of the window 104 .

In addition, the cleaning body 110 is designed to automatically clean by rotating and moving the electric motor 121 as a power source. The electric motor 121 is located on the bottom of the inside of the case 104 located at the rotation center of the cleaning body 110. It can be configured by connecting the rotary arm 122 between the motor shaft of the electric motor 121 and the cleaning body 110.

Therefore, by rotating the electric motor 121 in the forward, reverse direction, or in any one direction, the rotary arm 122 can rotate the cleaning body 110 in the forward, reverse direction, or in any one direction, which causes the window 105 The brush 11 in contact with the surface of the window 105 can clean the surface of the window 105 to remove foreign substances.

8 and 9 show an optical device equipped with a window cleaning mechanism according to a third embodiment of the present invention, in which the case 204 is approximately semi-cylindrical and the window 205 is a part of the semi-cylindrical case 204. The type that constitutes is equipped with a window washing device.

In this case, the window 205 is coupled to be fixed to the case 204, and the cleaning body 210 is installed on the case 204 to move with respect to the window 205 as in the second embodiment. You can.

In addition, the specific configuration of the cleaning body 210, the cleaning medium supply configuration, and the control configuration of the electric motor 221, which will be described later, are the same as those of the first embodiment, so overlapping configurations are assigned the same reference numerals and their specific configuration and operation. The explanation is omitted.

In the third embodiment, the movement of the cleaning body 210 is similar to the configuration of the second embodiment by placing the cleaning body 210 outside the case 204 and forming guide protrusions (at the top and bottom of the cleaning body 210). 211), the cleaning body 210 can be rotated with respect to the window 105 by fitting it movably along the circular rail grooves 204a formed around the upper and lower periphery of the case 204.

At this time, in the second embodiment, since the case 104 is cylindrical, it is possible to install two cleaning bodies 110 at 180-degree intervals and to clean by rotating the cleaning bodies 110 in any direction, but in the third embodiment, In the embodiment, since the case 204 is approximately semi-cylindrical, only one is installed at either end of the window 205 and rotated in the forward and reverse directions.

The cleaning body 210 rotates in the forward and reverse directions using the electric motor 221 as a power source, thereby automatically performing cleaning. As in the above-described second embodiment (see FIG. 7), this is provided with an electric motor 121 on the inner bottom of the case 104, which is the rotation center of the cleaning body 110, and the motor shaft of the electric motor 121 It is also possible to apply a configuration that connects the rotating arm 122 between the cleaning body 110 and the cleaning body 110. However, in the third embodiment, it is installed at the bottom of the case 204, which is the rotation center of the cleaning body 210, as shown in FIG. 9. The first pulley (221a) is installed to be rotatable, and another second pulley (221b) is fixed to the motor shaft of the electric motor 221, and the first pulley (221a) and the second pulley (221b) are connected with a belt (221c). ), and is configured by connecting the rotary arm 222 between the first pulley 221a and the cleaning body 210.

Even with this configuration, by rotating the electric motor 221 in the forward and reverse directions, the rotational power of the electric motor 221 is transmitted to the rotary arm 222 by the first and second pulleys 221a and 221b and the belt 221c. transmitted, the cleaning body 210 can be rotated in the forward and reverse directions, and as a result, the brush 11 in contact with the surface of the window 205 moves back and forth along the surface of the window 205 to clean and remove foreign substances. You can.

In this way, the present invention installs a cleaning body (10, 110, 210) on a LiDAR optical device installed inside or outside the vehicle to detect terrain or objects around the vehicle to always keep the windows (5, 105, 205) through which the laser light passes clean. The object detection performance of the optical device can be improved, and foreign substances can be cleaned more thoroughly by cleaning the surfaces of the windows 5, 105, and 205 with the brush 11 and spraying cleaning liquid or compressed air. This cleaning body As the cleaning function of the windows (5,105,205) is realized with a very simple configuration by (10,110,210), not only is it easy to manufacture and the manufacturing cost can be reduced, but also not only a lidar optical device having a cylindrical or semi-cylindrical case. , it can also be applied to cleaning windows through which light passes through optical devices such as vehicle headlights or surveillance cameras, so that the performance of the relevant optical devices can always be maintained in good condition.

Figure 10 is a diagram for explaining the configuration of a window in a lidar optical device according to a fourth embodiment of the present invention. FIGS. 11 and 12 are diagrams for explaining a modified example of the configuration of the window of FIG. 10.

Referring to FIG. 10, the LiDAR optical device according to this embodiment further includes a transparent film 51 installed on one side of the window 5. The transparent film 51 has a heating function. This transparent film 51 is used to remove moisture existing on the outer surface of the window in the LiDAR optical device and has a self-heating function. To this end, the transparent film 51 may include a conductive wire disposed on a film substrate, and a transparent conductive oxide film placed on the conductive wire and laminated on the film substrate.

Here, the film substrate may be polyethylene terephthalate (PET) in the form of a film, the conductive wire may be a silver (Ag) nanowire, and the transparent conductive oxide film may be a tin oxide film, a fluorine-doped tin oxide film, or an aluminum-doped film. It may be a zinc oxide film. In the case of silver nanowires, the sheet resistance value may be 10 to 20Ω/cm2.

In addition, the transparent film 51 may further include dispersed metallic nano-dots to improve the interface properties of the conductive wire to have low resistance and thus exhibit superior heat generation performance under low voltage compared to the existing one. Dispersed metallic nanodots are placed on a conductive wire to lower the resistance of the conductive wire. These dispersed metallic nanodots may be made of a material selected from gold, silver, chromium, nickel, copper, aluminum, or a combination thereof.

Additionally, as shown in FIG. 11, the transparent film 52 may be installed on the inner surface of the window 5. The transparent film 52 may have substantially the same material or configuration, except that it is installed on the inner and outer surfaces of the transparent film 51 and the window 5, respectively.

Additionally, as shown in FIG. 12, the transparent film 51 and the transparent film 52 may be installed on the outer and inner surfaces of the window 5, respectively. In this case, moisture on the outer and inner surfaces of the window 5 can be effectively removed to prevent a decrease in light transmittance due to moisture such as moisture.

Figure 13 is a diagram for explaining the configuration of a window in the lidar optical device according to the fifth embodiment of the present invention.

Referring to FIG. 13, the LiDAR optical device according to this embodiment may further include a coating layer 53 disposed on the transparent film 51 in addition to the transparent film 51 on the window 5. The coating layer 53 described above may correspond to a hybrid nano coating material.

Additionally, the coating layer 53 may be a hard coating layer. This coating layer 53 preferably has a pencil hardness of 4H or more as measured according to ASTM D3363 under a load of 1 kg.

Additionally, the coating layer 53 of this embodiment may be a functional coating layer capable of selectively transmitting light in a specific wavelength band. In that case, there is an effect of effectively transmitting optical signals going back and forth between the inside and outside of the window 5 in the lidar optical device.

In this embodiment, it is a coating layer additionally installed on the transparent film installed on the outer and/or inner surface of the window, and the coating layer is installed to selectively transmit light in a specific wavelength range, so that the inside of the device, such as a lidar optical device, There is an advantage in that the input and output of light can be effectively processed in a configuration that irradiates light from the outside and receives reflected light from the outside to the inside. When installed on the outer surface of a window, this coating layer 53 is the outermost layer on the outer surface of the window and may be a hard coating layer or a combination of a filter layer and a hard coating layer. Here, the filter layer corresponds to a layer that selectively transmits light in a specific wavelength range.

The embodiments described so far are merely illustrative of preferred embodiments of the present invention, and the scope of the present invention is not limited to the described embodiments, and is within the technical spirit and scope of the claims of the present invention. Various changes, modifications, or substitutions may be made, and such embodiments should be understood as falling within the scope of the present invention.

1: Laser module unit 2: Polygon mirror unit
4,104,204: Case 5,105,205: Windows
6: Cleaning liquid supply device 7: Compressed air supply device
10,110,210: Cleaning body 11: Brush
12: cleaning medium supply chamber 13: fine hole
21,121,221: electric motor 22: first gear
23: second gear 30: control unit
31: starting device 32: reception rate detection sensor
33: Pollution detection sensor 51, 52: Transparent film
52: Coating layer 122,222: Rotating arm
221a: first pulley 221b: second pulley
221c: belt

Claims (5)

In optical devices,
Cylindrical case;
a window that forms part of the case and transmits light;
a cleaning body fixedly installed outside the case and having a brush for cleaning the surface of the window;
a circular rail groove formed inside the case and around a lower portion of the case;
It includes an electric motor installed on the inner bottom of the case,
A first gear is installed on the motor shaft of the electric motor, and the first gear is inscribed at the bottom of the window to form a circular second gear that engages with the window. By driving the electric motor, the window is connected to the circular rail. Guided to a groove, the window and the cleaning body are moved relative to each other so that the surface of the window is cleaned by the brush of the cleaning body,
The cleaning body is,
a cleaning medium supply chamber formed inside the cleaning body;
A fine hole leading from the cleaning medium supply chamber to the brush,
It is formed on the upper surface of the cleaning body and includes an inlet through which compressed air can be introduced into the cleaning medium supply chamber,
The surface of the window is hybrid nano-coated,
It further includes a compressed air supply device whose supply line is connected to the inlet, so that the brush is cleaned and foreign substances on the surface of the window are removed by a jet of compressed air supplied from the compressed air supply device,
The cleaning body is,
An optical device equipped with a window cleaning mechanism, characterized in that two windows are disposed at intervals around the window. delete delete The optical device of claim 1, further comprising a transparent film installed on the surface of the window, wherein the transparent film has a heating function. The optical device of claim 4, further comprising a coating layer installed on the transparent film, wherein the coating layer includes a hard coating layer.