KR100948653B1 - Laser projection apparatus and method of a flat scanning type - Google Patents

Abstract

The present invention relates to a planar irradiation type color laser projection apparatus capable of producing a laser light show and a control method thereof, comprising: a white light laser for oscillating white light in which three lights having different wavelengths are mixed; A multi-color acoustic light modulator for diffracting the incident white light laser according to a specific frequency for each channel to be applied and color-decomposing it into a laser source in the visible light region; An X-Y scanner mounted on a horizontal axis (X-axis) and a vertical axis (Y-axis) driving motor to reflect a laser source in a visible light region output from the multicolor acoustic light modulator to the screen; A color separation controller for generating a specific frequency for each channel for color separation of the laser source in the visible light region from the white light laser and outputting the specific frequency to the multi-color acoustic light modulator; A scanner controller which receives the vector control signals according to the projection image and controls the driving motor of the scanning means; A file editor for converting the contents for the laser show into vector contents; A control unit which generates a signal for controlling each unit such that the content image converted by the editor is projected as a vector type image; And a signal input / output interface unit for interfacing the control signal output from the control unit to the color separation control unit and the scanner control unit.

Laser, projection, multifaceted.

Description

LASER PROJECTION APPARATUS AND METHOD OF A FLAT SCANNING TYPE}

1 is a block diagram of a general laser projection apparatus employing a plurality of light sources.

Figure 2 is a block diagram of a laser projection apparatus of the planar irradiation method according to an embodiment of the present invention.

3 is a schematic diagram of an X-Y scanner 120 employing a multifaceted mirror in accordance with an embodiment of the present invention.

4 is a view for showing the rotation speed of the motor according to the change in the applied voltage.

The present invention relates to a laser projection apparatus, and more particularly, to a planar irradiation type color laser projection apparatus capable of producing a laser light show and a control method thereof.

The laser, which was invented for the first time in 1960, implies the concept of 'light amplification by inductive radiation' and has the characteristics of coherence, monochromaticity, straightness, and high luminance unlike general light sources.

와 Nd:YAG 레이저, 아르곤(Ar) 레이저의 발진에 성공하였다. 이후의 레이저 개발은 레이저 빔을 발진시킬 수 있는 물질에 대한 체계적인 연구를 바탕으로 유리 레이저, 색소 레이저, 반도체 레이저 등의 다양한 레이저의 개발을 이끌었으며, 이를 적용하는 분야에 있어서도 다방면에 걸친 획기적인 첨단 기기의 개발을 가져 왔고, 또한 그 이용가치를 인정받고 있다.The red ruby laser was launched by Maiman in May 1960. In December of the same year, the helium laser was launched.

And oscillation of Nd: YAG laser and argon (Ar) laser. Subsequent laser development led to the development of various lasers such as glass lasers, dye lasers, and semiconductor lasers based on systematic research on materials capable of oscillating laser beams. Has led to its development and its value in use.

In the display using a laser, lighting effects on the stage, auxiliary lighting of art works, and outdoor advertisements installed on the roof of a large building are introduced. In recent years, as laser source technology has developed rapidly, laser projection or laser light shows are emerging as a new technology, and a laser-based projection apparatus has been widely used worldwide for high-quality visual production.

)등이 사용된다. Introducing the laser projection device that combines the RGB three-color laser is as follows. First of all, the combination of laser light sources of R, G, and B in realizing colors for laser displays creates a variety of colors and images. As the three primary colors of conventional light used in laser displays, a wavelength range of 605 ± 5 nm in red, 530 ± 10 nm in green, and 470 ± 10 nm in blue is preferable. Currently used blue lasers include argon (Ar) and helium-cadmium (He-Cd) lasers, and green lasers are the second harmonic of argon (Ar) and niobium (Nd) solid-state lasers, and copper (Cu) vapors. There is a laser. Red lasers also include helium-neon (He-Ne), krypton (Kr), and ruby (Cr:

) Is used.

The block diagram of the laser projection apparatus using these is shown in FIG. The beam syringe adjusts the direction of the beam by attaching a reflector on the axis of the galvanometer, which vibrates microscopically up and down and up and down, respectively. The laser beam incident on the reflector attached to the axis of the galvanometer in a constant direction is represented as an image on the screen by controlling the direction by two galvanometers oscillating up, down, up and down.

However, there is a disadvantage in that various optical elements are required to implement a laser display from each light source, and the provision of such optical elements leads to a decrease in resolution accompanied by a loss of beam intensity. In addition, since the arrangement of a plurality of light sources and corresponding optical elements has to be taken into consideration, there is a disadvantage that the system must be enlarged.

On the other hand, a general laser projection device mainly uses a pair of X-Y scanners with a flat mirror attached to a galvanometer to implement an image. The typical resolution of the scanned image by this planar mirror is 40 × 40, which provides a significantly lower resolution than the 640 × 400 of a computer screen. Therefore, a way to solve this problem must be devised.

In addition, in the implementation of vector and raster images, the most important factor affecting the image quality is the scanning speed. If the scanning speed value is small, the afterimage shaking phenomenon is large, and if the scanning speed value is large, the end of line is blurred or warped, especially in the case of a line. In the case of circles or polygons, it is more difficult to implement an intact image because the start and end points of the image are displaced and the image is distorted. Furthermore, as the number of images to be implemented increases, the afterimage shaking and the distortion at the end portion become larger. Therefore, it is necessary to correct the distorted image by varying the scanning speed according to the size or amount of the image to be implemented.

In addition, the use of bitmap images in laser shows that project images using laser beams demands higher resolution images as the distance increases. Projecting the image closer does not affect the resolution of the image, but as the distance increases, the resolution must increase in proportion to the square of the distance. Therefore, a new method for solving the problem of resolution deterioration with increasing distance in the laser projection apparatus must be devised.

Accordingly, an object of the present invention is to provide a small-capacity, low-cost laser projection apparatus capable of expressing true-color color in the visible region only by using a single white light.

Furthermore, the present invention provides a laser projection apparatus and a control method of a planar irradiation method that can improve the resolution of the image by increasing the scanning line of the display device using a laser,

Furthermore, the laser projection apparatus and the control of the planar irradiation method that can correct the distortion image by varying the scanning speed according to the size or amount of the image to be displayed, as well as to prevent the resolution from being lowered with increasing distance. In providing a method.

In accordance with one embodiment of the present invention for achieving the above object is a laser projection apparatus of the plane irradiation method,

A white light laser for oscillating white light in which three lights having different wavelengths are mixed;

A multi-color acoustic light modulator for diffracting the incident white light laser according to a specific frequency for each channel to be applied and color-decomposing it into a laser source in the visible light region;

An X-Y scanner mounted on a horizontal axis (X-axis) and a vertical axis (Y-axis) driving motor to reflect a laser source in a visible light region output from the multicolor acoustic light modulator to the screen;

A color separation controller for generating a specific frequency for each channel for color separation of the laser source in the visible light region from the white light laser and outputting the specific frequency to the multi-color acoustic light modulator;

A scanner controller which receives the vector control signals according to the projection image and controls the driving motor of the scanning means;

A file editor for converting the contents for the laser show into vector contents;

And a controller configured to control each unit so that the content image converted by the editor is projected as a vector type image.

In addition, the method according to an embodiment of the present invention is a white light laser, a multi-color acoustic light modulator that diffracts the incident white light laser according to a specific frequency applied to the channel, and decomposes the color into a laser source in the visible region, and an X-axis and a Y-axis A method of controlling a planar irradiation laser projector comprising a XY scanner mounted on a driving motor and reflecting a laser source in a visible light region output from the multicolored acoustic light modulator to a screen.

Converting the content for the laser show into vector content;

Generating a specific frequency for each channel for color separation of a laser source in a visible region corresponding to the converted vector type content image;

And generating vector control signals corresponding to the converted vector type content image and projecting the vector type image imager on the display unit.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

2 is a block diagram of a laser projection apparatus of a planar irradiation method according to an embodiment of the present invention.

Referring to FIG. 2, the white light laser 100 oscillates white light in which three lights having different wavelengths are mixed. The white light laser employed in the present invention is an argon-krypton (Ar-Kr) mixed gas laser. This mixed gas laser is a laser that emits white light by combining a strong red (647 nm) beam of krypton ion laser with a strong blue (488 nm) and green (514 nm) light source, which is an advantage of an argon (Ar) ion laser. In order to utilize such white light in a laser projector, color separation is important. To this end, the present invention employs a multicolor acoustic light modulator (PCAOM) 110.

The multicolor acoustic light modulator 110 performs color separation by diffracting the incident white light laser according to a specific frequency applied to each channel to a laser source in the visible region. The PCAOM 110 selects and adjusts the intensity and the wavelength of the beam. According to the addition of light, white light is produced by mixing 33% of R, G and B. In actual lasers, however, the percentages vary depending on the intensity of these beams, which are also controlled by the PCAOM 110. Another function of the PCAOM 110 is the control of the wavelength. There are four, six, and eight channels depending on how many wavelengths are controlled simultaneously. One channel is associated with one color, so their control is directly related to color control. Each channel is adjusted according to the radio frequency (RF) signal. PCAOM 110 according to an embodiment of the present invention receives a specific frequency for 8 channels as shown in Table 1 below to decompose six (R, G, B, Y, C, V) laser sources .

ch Wavelength (nm) Output Color Frequency (MHz) One 676 Weak red 30.11 2 647 Red 31.65 3 568 Yellow 36.73 4 514 Green 41.40 5 496 Weak blue 43.28 6 488 Blue 44.20 7 476 Dark blue 45.59 8 457 Violet 47.99

On the other hand, the XY scanner 120 has a multi-facet mirror mounted on a horizontal axis (X axis) and a vertical axis (Y axis) driving motor to reflect the laser source in the visible light region output from the multicolor acoustic light modulator 110 to the screen. Do this.

For reference, the existing laser projection apparatus mainly realized the image using a pair of X-Y scanners with a flat mirror attached to a galvanometer. The typical resolution of the scanned image by this planar mirror is 40 × 40, which provides a significantly lower resolution than the 640 × 400 of a computer screen. In order to compensate for this, the present invention used a multi-faceted mirror in place of the scanner on both the X and Y axes. In the case of using the multi-faceted mirror as described above, a method for finding the optimum motor rotation speed and the condition of the multi-faceted mirror will be explained in detail.

First, the change of the image according to the variable, in the implementation of the vector (raster) and raster (Raster) image, the factor that has the greatest influence on the image quality is the scanning speed. If the scanning speed value is small, the afterimage shaking phenomenon is large, and if the scanning value is large, the end of line is blurred or warped, especially in the case of line. In the case of circles or polygons, it is more difficult to implement an intact image because the start and end points of the image are displaced and the image is distorted. Furthermore, as the number of images to be implemented increases, the afterimage shaking and the distortion at the end portion become larger. Therefore, the scanning speed varies depending on the size or amount of the image to be implemented.

In this experiment, the Argon (Ar) krypton (Kr) mixed gas laser with maximum output power of 3.5W is used when the scanning speed is changed based on 30K, which is a typical scanning speed for realizing a vector image. The images were compared. As a result, if the scanning speed is large compared to the amount of image to be implemented, distortion appears at the end of the image, and in the small case, the distance between the scanning lines is large and afterimage blurring becomes large, resulting in a flashing image.

On the other hand, as the color and spatial movement values increase, the tendency and shaking phenomenon of the end of the scanning line to be continued with the beginning of the next scanning point appear. The distortion caused by color and space movement is more severe as the image to be implemented increases. Such distortion may be corrected by reducing the scanning speed, but in this case, image blur may be accompanied.

Experimental results show that as the scanning speed increases, the afterimage of the image decreases, but there is a limit to the realization of the clear image. The conditions for the implementation of the raster image depend on the size of the image and the number of scan points. Each of the variables causes distortion at the beginning and end of the image, but the most influential factor is the scanning speed.

Therefore, the improvement of the scanning speed enables the realization of a clear image. Currently, the most widely used is a 7 × 7mm X-axis mirror and a 7 × 14mm Y-axis mirror connected to the GS-10A shaft, but a 5 × 8mm mirror on the M-10A, which has reduced its elasticity by about half. Can be used to attach to both the X and Y axes to obtain a higher scanning speed, thereby realizing an image with reduced afterimages and distortions.

The multi-faceted mirror used in this experiment was used to cut a SUS material with a diameter of 20 mm from 5 mm to 10 mm in width at 5, 8, 12, and 16 angles using wires and nickel-chromium plating to increase the reflectivity of the beam. Each of the mirrors was attached to the X-axis and Y-axis motors in combination, and the rotational speed of the attached motor was changed by adjusting the applied voltage. The regulation of the applied voltage was quantified by the power supply and sequentially supplied from 10V to 24V. Figure 3 is a schematic diagram showing this, the rotational speed of the two motors were measured using an optical sensor and an oscilloscope.

Table 2 below shows the increase in scan line by attaching a 16-sided multifaceted mirror to the X-axis, and the Y-axis rotation speed in the case of showing a change in applied voltage and a relatively improved resolution between the multi-faceted mirrors attached to the Y-axis. It is summarized. The rotational speed of the motor measured in this experiment is different from the rotational speed according to the rated voltage presented by the selected motor because the load is increased by the rotational speed when the mirror is attached. 4 shows the rotation speed of the motor according to the change of the applied voltage. It can be seen that the rotational speed of the two motors increases linearly with the applied voltage, and the difference in the rotational speed in the initial speed is maintained as it is.                     

In terms of the optimum resolution condition, the best image among the images of the multi-axis mirrors on the X and Y axes and the rotational speed of the two motors is shown when the 16-sided polygon mirror is attached to the X-axis. It can be seen that it depends on the attached mirror and the rotational speed of the motor. Table 3 below shows the rotational relationship between the motors according to the applied voltage in the case of attaching a 16-sided polygon mirror to the X-axis, and showing an optimal image according to the polygon mirror attached to the Y-axis. It shows the scanning time and resolution for each side. As can be seen from Table 4, in the case of using a five-sided multi-facet mirror, the spacing of the scanning lines is substantially constant compared to the case where the number of faces increases, and the scanning area is also shown to be even. In addition, it can be seen that the resolution decreases in the case of a multi-faceted mirror with increasing number of faces.                     

Since the laser source used in this experiment is oscillated continuously, it is possible to calculate the number of revolutions per second and the number of shots per second from the number of revolutions of the motor and the given plane diameter. When the applied voltage is 24V, horizontal scanning produces 720 scan lines. In the five-sided multifaceted mirror of the Y-axis motor, one side passes for 0.06 seconds to accommodate 41 scanning lines, resulting in 41 scanning lines on the screen.

In comparison, if a 16-sided multifaceted mirror is attached to the Y axis, the rotational speed of one side is 0.02 seconds, which is three times shorter than that of a five-sided polygonal mirror. Therefore, the number of scan lines that can be displayed during this time is reduced to 1/3. As described above, when the number of horizontal scanning lines is the same, the resolution of the Y-axis motor is too fast or the number of faces of the multi-facet mirror is increased because the rotation speed of the reflecting surface is increased. In the case of an image scanned at 30 frames per second, the flicker can be ignored. In consideration of this, the theoretical rotational speed according to the multi-facet diameter is shown in Table 5. In comparison, Table 6 shows the actual number of revolutions at the highest resolution using the respective multi-facet mirrors.

Number of faces in a multifaceted mirror 5 8 12 16 Y-axis motor speed 360 225 150 122

Number of faces in a multifaceted mirror 5 8 12 16 Y-axis motor speed 156 151 121 139 resolution 44.7 30.7 21.3 14.7

From the above test results, the increase of horizontal scanning by the X-axis motor was brought, but it was found that the rotation speed of the Y-axis motor synchronized with the rotational speed of the X-axis motor to improve the resolution of the raster image. If the number of planes of the multi-facet mirror attached to the Y-axis motor is α, the rotation angle of one face from the center of the multi-facet mirror is 360 degrees / α.

This means that as the number of faces increases, the rotation angle per side decreases, and the number of injection athletes that can be implemented per side when the rotation speed is the same. Therefore, when the 8-sided polygon mirror and the 16-sided mirror mirror are used for the rotational speed of the same Y-axis motor, the number of scan lines that can be represented in the case of 16-angles is only half that of the eight-angles. Therefore, in order to implement the same injection, it can be seen that a reduced rotational speed is required by a ratio corresponding to the increased number of planes. The rotational speed of the X-axis motor is related to the increase in injection speed per second in the resolution, and the Y-axis motor is related to the frames per second. Therefore, in order to obtain high resolution, the longer the scanning time of the X axis is, the better the rotational speed of the motor on the Y axis needs to be satisfied. It can be seen that the resolution of 44.74 for a five-sided polyhedron is about 10% improvement over the conventional resolution in current laser displays. On the other hand, increasing the rotational speed of the Y-axis motor also increases the resolution. In addition, at the same rotational speed, the smaller the number of mirror surfaces, the more the cross-sectional area is increased, which can contribute to the improvement of resolution. have.

Referring to FIG. 2 again, the color separation controller 130 generates a specific frequency for each channel for color separation of the laser source in the visible light region from the white light laser 100 and outputs the specific frequency to the multi-color acoustic light modulator 110. The color separation controller 130 receives 8 channels of TTL input from the host computer 160, which will be described later, and generates a specific frequency per channel. By applying this specific frequency to the AOM, the wavelength diffracted according to each wavelength of the incident laser can be output differently as shown in Table 1 above. The signal input to the color separation controller 130 receives an input of a TTL format, and in order to effectively control this, each channel may be controlled using an 82c55PI manufactured by Intel Corporation.

The 82c55PPI (Programable Peripheral Interface) has 24 programmable I / O pins and can control each port in three program modes. In addition, since there is a driving capacity of 2.5mA per every output port, it is considered to be suitable for driving control of the PCAOM driver board. Therefore, the color of the white light laser is decomposed using 82c55A. The intensity of the output beam varies according to the TTL potential difference input to the driver board in the PCAOM board specification to be controlled. However, in this study, color separation is performed as shown in Table 1 by driving with 8 channel full driving signal (+ 5V).

On the other hand, the scanner controller 140 receives the vector control signals according to the projection image from the host computer 160 described later to control the driving motor of the scanning means. In the present invention, a scanner 6850p motor of Cambridge Technologies Inc. and a 6585 drive for controlling the scanner are used as the scanner controller 140.

The host computer 160 is a general personal computer and includes a file editor, a controller (CPU), and a memory for implementing the present invention. The file editor plays a role of converting content for a laser show into vector content, and the controller generates a signal for controlling each part so that the content image converted by the editor is projected into a vector image. The input / output interface unit 150 for interfacing the control signals output from the control unit to the color separation control unit 130 and the scanner control unit 140 has a structure in which the host computer 160 can be integrally mounted.

In the following description of the flash (SWF) movie content employed in the embodiment of the present invention for the laser light show,

First of all, it can be said that the integrated environment is made for the laser show and the parts that can control the laser projector and the projection device, and finally, the contents for producing the content in one application form. The advantage of the integrated environment is that the animation is created in the integrated environment and the result is immediately visible in the program. On the other hand, the disadvantage is that it is a program of integrated environment, so it takes a lot of time to learn the integrated environment itself, and it usually takes a lot of time to make animation.

What can be made in the form of plug-ins are some three-dimensional or two-dimensional animation development tools given a software development environment. Using these development tools, the plug-in type laser control software has the advantage of easily generating animations because there are many existing users. The disadvantage is that it is a plug-in type, so if the development tool is improved, the plug-in needs to be developed again.

Therefore, the laser image can be output by producing animation contents in two ways as described above. The option to improve these two disadvantages may be a method using a Flash (SWF) file proposed by Macromedia. . The advantage of Flash is that it has a large user base, anyone can easily create animations, interactive animations with users, and can be connected to the Internet. Flash files are basically stored in vector and bitmap format. You can also input images, but the bitmap method requires the laser scanner to move quickly in order to produce a clear image. Due to the limitations of the speed of the physical scanner, it is difficult to obtain a good image. There is a drawback to this. However, the general animation has a disadvantage that there is no dialogue with the user and can only be shown, whereas the flash can communicate with the user, and because of the flexibility of the flash file itself, a wide range of applications are possible. Many tools exist for creating flash files using file converters.

For this reason, a production tool for laser shows can be a good alternative to using lasers, and creating software that reads flash files, plays video, and outputs independently.

On the other hand, the general digital image methods can be classified into bitmap images and vector graphics. Since the representation of an image or video using a laser beam on a two-dimensional plane depends on the speed of the scanner, You can get good resolution and good quality images.

The bitmap image is composed of a rectangular particle of the smallest unit called a pixel, and may represent a natural image due to the color difference that the pixel may represent. Therefore, the bitmap image is suitable for expressing photographs, etc., which represent images of continuous tones. In this process, a condition of resolution depending on the number of pixel particles is required. The quality of the result is determined by the degree of resolution. The quality of the result is determined by the degree of resolution depending on the user, and the resolution must be properly operated according to the user.

On the other hand, vector graphics represent each of the images as objects and have outlines including points and paths, so you can always get high-quality results regardless of the size or resolution of the image, so you can be assured of quality when moving to other programs. have. This method takes up considerably less capacity than bitmap images, and therefore has the advantage of being able to process images quickly.

Using a bitmap image in the laser show method of projecting an image using a laser beam at a long distance requires a higher resolution image as the distance increases. Projecting the image closer will not affect the resolution of the image, but as the distance increases, the resolution must increase in proportion to the square of the distance. Therefore, it is necessary to project the image in a vector way to obtain an image of resolution that is not dependent on distance, so that a good quality image can be obtained. Also, since the amount of information is less than that of a bitmap, the speed of the laser scanner's operation is more affected. Because it is small, there is an advantage in good image realization.

In addition, in the case of the vector method, as the size of the image increases, another algorithm for increasing the resolution of the image is required in order to obtain a constant resolution, which requires a faster computational speed and a scanner for controlling the laser beam. Faster response times are required. Due to this problem, the vector method can be used to obtain a high quality image suitable for a change in resolution depending on the speed and distance of the scanner. Therefore, in the exemplary embodiment of the present invention, the laser show is designed by converting the contents for image projection into vector image contents.

There are many types of vector image formats. There are two types of image formats, which are used for moving images and still images. The vector file format for displaying still images is the file format of Microsoft's WMF, Adobe Illustrator's file format, and CorelDraw's file format that can represent a still image of a typical vector format. Storing files in the form of moving pictures is 3d max, the format of flash file of Macromedia. Of these file formats, Macromedia's Flash movie is the easiest and most widely known form for processing vector images.

There are two ways to create vector content using various editing tools or develop your own editing tools. At this time, it is better to develop content using an editing tool (in the present invention, this is defined as a screen editor) that can edit a vector video rather than using an original editing tool, and it is possible to edit quickly.

Once SWF content is created for a laser show, a control program is required to handle file conversion and control for projecting the created content onto a two-dimensional plane. The control program data is stored in the memory of the host computer 160 and can be executed by the controller. A brief description will be given of a control method executed by the controller, wherein the controller first converts the content for the laser show into vector content, and then converts the laser source of the visible light region corresponding to the converted vector content image. It generates not only a specific frequency for each channel for color separation, but also generates vector control signals suitable for the converted vector content image to project the vector content image on a display unit. The reason for continuously outputting the dog frame is to keep the afterimage in the human eye. The output time per frame must be repeatedly output at least 1/16 seconds to obtain a smooth image with less flicker.

As described above, the present invention has the advantage that a small-capacity, low-cost laser projection apparatus can be manufactured because the true-color color of the visible region can be expressed by using a single white light.

Compared to a general laser projection apparatus employing a flat mirror, the use of a multi-facet mirror on the X and Y axes increases the scanning line of the display device, thereby improving the resolution of the image.

In addition, since the present invention projects an image in a vector manner, an image having a resolution that does not depend on distance can be obtained. Also, since the amount of information is less than that of a bitmap, a good image can be obtained by being less affected by the driving speed of the laser scanner. There is an advantage to implement.

On the other hand, the present invention has been described with reference to the embodiments shown in the drawings, but this is only illustrative, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. . Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.

Claims (2)

In the planar laser projection apparatus, A white light laser for oscillating white light in which three lights having different wavelengths are mixed; A multi-color acoustic light modulator (PCAOM) which diffracts the incident white light laser according to a specific frequency applied to the channel for color control and decomposes the color into a laser source in the visible light region; An X-Y scanner mounted on a horizontal axis (X-axis) and a vertical axis (Y-axis) driving motor to reflect a laser source in a visible light region output from the multicolor acoustic light modulator to the screen; A color separation controller for generating a specific frequency for each channel for color separation of the laser source in the visible light region from the white light laser and outputting the specific frequency to the multi-color acoustic light modulator; A scanner controller which receives the vector control signals according to the projection image and controls the driving motor of the scanning means; A file editor for converting the contents for the laser show into vector contents; A control unit which generates a signal for controlling each unit such that the content image converted by the editor is projected as a vector type image; And a signal input / output interface unit for interfacing the control signal output from the control unit to the color separation control unit and the scanner control unit. A white light laser, a multi-color acoustic light modulator (PCAOM) which diffracts the incident white light laser according to a specific frequency applied to the color to be applied for color control, into a laser source in the visible light region, and an X-axis and a Y-axis driving motor, respectively. A planar irradiation laser projection apparatus comprising an XY scanner mounted on a multi-scope mirror and reflecting a laser source in a visible light region output from the multicolor acoustic light modulator on a screen. Converting the content for the laser show into vector content; Generating a specific frequency for each channel for color separation of a laser source in a visible region corresponding to the converted vector type content image; And generating vector control signals corresponding to the converted vector type content image and projecting the vector type content image on the display unit.

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