CN113552760A - Novel laser light source control display device - Google Patents
Novel laser light source control display device Download PDFInfo
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
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- G03B21/2006—Lamp housings characterised by the light source
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- G03B21/00—Projectors or projection-type viewers; Accessories therefor
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- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
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Abstract
本发明公开了一种新型激光光源控制显示装置，该装置包括FPGA控制模块、激光色轮、LCD触摸显示屏、DMD模块、光源控制模块、红色激光光源、绿色激光光源及蓝色激光光源。FPGA控制模块配合光源控制模块产生能够独立选通且亮度可调的红绿蓝三色激光；在FPGA控制模块的控制下，蓝色激光可通过激光光轮激发红绿蓝三色激光；在FPGA控制模块的控制下DMD模块实现单色激光投影显示控制、双色激光投影显示控制、三色激光投影显示控制。本发明与现有技术相比具有根据需求进行不同投影模式的选择，在激光光源控制领域有着较强的使用价值。
The invention discloses a novel laser light source control display device, which comprises an FPGA control module, a laser color wheel, an LCD touch display screen, a DMD module, a light source control module, a red laser light source, a green laser light source and a blue laser light source. The FPGA control module cooperates with the light source control module to generate red, green and blue lasers that can be independently gated and adjustable in brightness; under the control of the FPGA control module, the blue laser can excite the red, green and blue lasers through the laser light wheel; in the FPGA Under the control of the control module, the DMD module realizes single-color laser projection display control, two-color laser projection display control, and three-color laser projection display control. Compared with the prior art, the present invention can select different projection modes according to requirements, and has a strong use value in the field of laser light source control.
Description
Technical Field
The invention relates to the field of laser light source control display, in particular to a laser light source control display device which realizes projection display control based on monochromatic laser, projection display control based on bicolor laser and projection display control based on tricolor laser through hardware logic control.
Background
Currently, with the development of the projection display field and the increasing progress of science and technology, the projection display device based on the laser light source has wide application in various fields. Meanwhile, higher requirements are also put forward on a control display device of the laser light source. When performing projection display of a laser light source, it is necessary to perform control of the content such as gating control of the laser light source and brightness adjustment of the laser light source. The conventional laser light source control display device usually realizes projection display by matching single-path laser with a color wheel or realizes projection display by fixed three-color laser. Once the control display part of the light source cannot be adjusted after the manufacture is finished, the flexibility is poor, the application scene is limited, and the control display part is very inconvenient in the actual use process.
Disclosure of Invention
The invention aims to provide a novel laser light source control display device aiming at the defects of the prior art, which adopts red, green and blue lasers capable of being independently gated and controlled, can realize single-color projection display control based on blue lasers, projection display control based on red and blue double-color lasers, projection display control based on blue and green double-color lasers and projection display control based on red, green and blue three-color lasers under the condition of not replacing any equipment, has the characteristics of simple operation, high efficiency, high flexibility and the like, and has stronger use value in the field of laser light source control display.
The purpose of the invention is realized as follows:
a novel laser light source control display device comprises an FPGA control module, a laser color wheel, an LCD touch display screen, a DMD module, a light source control module, a red laser light source, a green laser light source and a blue laser light source, wherein the FPGA control module is respectively connected with the laser color wheel, the LCD touch display screen, the DMD module and the light source control module; the light source control module is respectively connected with the red laser light source, the green laser light source and the blue laser light source; the light source control module is composed of a plurality of gating multiplexers, the single gating multiplexers respectively complete the control of laser light sources of single color through single-color laser PWM signal lines and are connected with the FPGA control module through the light source PWM signal lines, light source address lines and light source gating signal lines, and the FPGA control module enables the light source control module to independently control the display brightness and gating state of blue laser, the display brightness and gating state of red laser and the display brightness and gating state of green laser by changing the duty ratio of the single-color laser PWM signal, so that the projection display control based on single-color laser, the projection display control based on double-color laser and the projection display control based on three-color laser are realized.
The FPGA control module is connected with the laser color wheel through a color wheel driving control signal line and a color wheel feedback signal line; the FPGA control module is connected with the LCD touch display screen through an RGB-LCD signal line; the FPGA control module is connected with the DMD module through a DMD gating signal line, an address signal line, a data signal line and a control signal line; the FPGA control module is connected with the light source control module through a light source PWM signal line, a light source address line and a light source gating signal line; the light source control module is connected with the red laser light source through a red laser PWM signal line; the light source control module is connected with the green laser light source through a green laser PWM signal line; the light source control module is connected with the blue laser light source through a blue laser PWM signal line.
The FPGA control module adopts a Kintex-7 XC7K325T type FPGA.
The laser color wheel can be excited under blue laser to generate red, green and blue laser.
The DMD module is composed of a DMD chip and a DMD power supply.
Compared with the prior art, the invention has the following advantages:
(1) this device adopts red green blue three-colour laser light source that can independently control, can control blue laser and arouse red laser, yellow laser, green laser and blue laser on the laser colour wheel, can also use red laser light source and green laser light source cooperation blue laser and colour wheel of independent control to realize projection display, and the light source control is nimble.
(2) The device simultaneously supports the laser projection display based on the color wheel and the independent red, green and blue laser projection display without the color wheel, can better realize different projection effects, and can better meet the requirements of various application scenes.
(3) For the light source brightness control signal, the device adopts the PWM brightness control waveform, can adjust the brightness based on the actual working mode, has high accuracy of brightness control, simple control and convenient debugging.
(4) Based on different projection requirements, the device can realize projection display based on a single DMD and projection display based on three DMDs through the light path device, and the flexibility of control display of the laser light source can be greatly improved under the condition that the light source is not changed.
(5) The device adopts the LCD touch screen and the Kintex-7 XC7K325T FPGA, can accurately, efficiently and conveniently complete the control and switching of the laser light source, effectively reduces the production and manufacturing cost, and expands the application occasions of the laser light source control display device.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a DMD module of the present invention;
FIG. 3 is a schematic diagram of the internal connection of the light source control module according to the present invention;
FIG. 4 is a schematic diagram of a blue light multiplexer for a light source control module according to the present invention;
FIG. 5 is a schematic diagram of a red light multiplexer for a light source control module according to the present invention;
fig. 6 is a schematic diagram of the green light multiplexer of the light source control module of the present invention.
Detailed Description
The invention is described in detail below with reference to the drawings and examples.
Referring to fig. 1, the invention is composed of an FPGA control module 1, a laser color wheel 2, an LCD touch display screen 3, a DMD module 4, a light source control module 5, a red laser light source 6, a green laser light source 7 and a blue laser light source 8, wherein the FPGA control module 1 is respectively connected with the laser color wheel 2, the LCD touch display screen 3, the DMD module 4 and the light source control module 5; the light source control module 5 is respectively connected with a red laser light source 6, a green laser light source 7 and a blue laser light source 8. The FPGA control module 1 is connected with the laser color wheel 2 through a color wheel driving control signal line and a color wheel feedback signal line; the FPGA control module 1 is connected with the LCD touch display screen through an RGB-LCD signal line; the FPGA control module 1 is connected with the DMD module 4 through a DMD gating signal line, an address signal line, a data signal line and a control signal line; the FPGA control module 1 is connected with the light source control module 5 through a light source PWM signal line, a light source address line and a light source gating signal line; the light source control module 5 is connected with the red laser light source 6 through a red laser PWM signal line; the light source control module 5 is connected with the green laser light source 7 through a green laser PWM signal line; the light source control module 5 is connected with the blue laser light source 8 through a blue laser PWM signal line.
Referring to fig. 3 to 6, the light source control module 5 is composed of a blue light multiplexer 51, a red light multiplexer 52, and a green light multiplexer 53. The single-channel gating multiplexer completes the control of the laser light source with single color through the single-color laser PWM signal line and is connected with the FPGA control module through the light source PWM signal line, the light source address line and the light source gating signal line. The blue light multiplexing multiplexer 51 is connected with the FPGA control module 1 through a blue light PWM signal line, a red light PWM signal line, a green light PWM signal line, a yellow light PWM signal line, a light source address line, and a blue light gating signal line. The FPGA control module 1 realizes the control of the blue light gating state through the blue light gating signal, and the blue laser light source 8 can normally work only when the blue light gating signal is at a high level. The blue, red, yellow and green lights generated by the blue laser excited on the laser color wheel 2 have their brightness controlled by the blue, red, green and yellow PWM signal lines, respectively, with the larger the duty ratio of the PWM signal, the larger the display brightness of the light of the corresponding color. When the light source address line selects the PWM signal of the corresponding color and the blue laser light source 8 is in the gating state, the PWM signal of the corresponding color is transmitted to the blue laser light source 8 to complete the output brightness adjustment of the blue laser light source 8, thereby realizing the brightness adjustment of the corresponding color generated by the excitation on the laser color wheel 2.
The red light multiplexer 52 is connected to the FPGA control module 1 through a red light PWM signal line, a light source address line, and a red light gating signal line. The FPGA control module 1 controls the red light gating state through the red light gating signal. The red laser light source 6 can operate normally only when the red light strobe signal is at a high level. The output brightness of the red laser light source 6 is controlled by the red PWM signal line, and the larger the duty ratio of the red PWM signal is, the larger the display brightness of red light is. When the red light PWM signal is selected by the light source address line and the red laser light source 6 is in a gating state, the red light PWM signal is transmitted to the red laser light source 6, so that the adjustment of the output brightness of the red light is realized.
The green light multiplexer 53 is connected to the FPGA control module 1 through a green light PWM signal line, a light source address line, and a green light gating signal line. The FPGA control module 1 controls the green light gating state through the green light gating signal. The green laser light source 7 can normally operate only when the green gating signal is at a high level. The output brightness of the green laser light source 7 is controlled by a green light PWM signal line, and the larger the duty ratio of the green light PWM signal, the larger the display brightness of green light. When the green light PWM signal is selected by the light source address line and the green laser light source 7 is in a gating state, the green light PWM signal is transmitted to the green laser light source 7, so that the adjustment of the green light output brightness is realized.
Examples
Referring to fig. 2, the DMD module 4 includes a DMD chip 9 and a DMD chip power system 10. The DMD chip power supply system 10 completes power management and power supply of the DMD chip 9. The working modes supported by the device are as follows:
(1) working mode 1:
referring to fig. 1 to 4, the projection control mode is selected by the LCD touch screen 3, and the FPGA control module 1 generates a red PWM brightness adjustment signal, a green PWM brightness adjustment signal, a blue PWM brightness adjustment signal, a yellow PWM brightness adjustment signal, a light source address signal, and a blue laser gating signal. When the blue laser gating signal generated by the FPGA control module 1 is at a high level, the blue laser light source 8 is gated, the light source address signal generated by the FPGA control module 1 selects the red light PWM brightness adjusting signal, the green light PWM brightness adjusting signal, the blue light PWM brightness adjusting signal and the yellow light PWM brightness adjusting signal generated by the FPGA control module 1 through the blue light multiplexer 51 according to the time sequence, and transmits the PWM brightness adjusting signals of the relevant colors to the blue laser light source 8, so that the red laser, the green laser, the yellow laser and the blue laser with adjustable brightness are excited by the blue laser with adjustable brightness in cooperation with the laser color wheel 2; the FPGA control module 1 generates a color wheel driving control signal to control the rotation of the laser color wheel 2, and real-time adjustment is carried out through a color wheel feedback signal; the FPGA control module 1 generates a DMD gating signal, a display control address signal, a display data signal and a DMD control signal, and controls the turnover of a DMD chip in the DMD module 4, so that the projection display control of the monochromatic laser is completed.
(2) The working mode 2 is as follows:
referring to fig. 1 to 4 and fig. 6, the projection control mode is selected by the LCD touch screen 3, and the FPGA control module 1 generates a red light PWM brightness adjustment signal, a green light PWM brightness adjustment signal, a blue light PWM brightness adjustment signal, a yellow light PWM brightness adjustment signal, a light source address signal, a blue laser gating signal, and a green laser gating signal. When the green laser gating signal generated by the FPGA control module 1 is at a high level, the green laser light source 7 is gated, and light source address signals generated by the FPGA control module 1 are respectively selected from green PWM brightness adjusting signals generated by the FPGA control module 1 through the green light multiplexer 53 according to a time sequence and are transmitted to the green laser light source 7, so that green laser light with adjustable brightness is generated through the green laser light source 7; when the blue laser gating signal generated by the FPGA control module 1 is at a high level, the blue laser light source 8 is gated, the light source address signal generated by the FPGA control module 1 selects the red light PWM brightness adjusting signal, the green light PWM brightness adjusting signal, the blue light PWM brightness adjusting signal and the yellow light PWM brightness adjusting signal generated by the FPGA control module 1 through the blue light multiplexer 51 according to the time sequence, and transmits the PWM brightness adjusting signals of the relevant colors to the blue laser light source 8, so that the red laser, the green laser, the yellow laser and the blue laser with adjustable brightness are excited by the blue laser with adjustable brightness in cooperation with the laser color wheel 2; green lasers generated by the green laser light source 7 and the blue laser light source 8 are commonly used for projection display of blue-green two-color lasers; the FPGA control module 1 generates a color wheel driving control signal to control the rotation of the laser color wheel 2, and real-time adjustment is carried out through a color wheel feedback signal; the FPGA control module 1 generates a DMD gating signal, a display control address signal, a display data signal and a DMD control signal, and controls the overturning of a DMD chip in the DMD module 4, so that the projection display control of blue-green double-color laser is completed.
(3) Working mode 3:
referring to fig. 1 to 5, the projection control mode is selected through the LCD touch display 3, and the FPGA control module 1 generates a red PWM brightness adjustment signal, a green PWM brightness adjustment signal, a blue PWM brightness adjustment signal, a yellow PWM brightness adjustment signal, a light source address signal, a blue laser gating signal, and a red laser gating signal. When the red laser gating signal generated by the FPGA control module 1 is at a high level, the red laser light source 6 is gated, the light source address signal generated by the FPGA control module 1 selects the red PWM brightness adjusting signal generated by the FPGA control module 1 through the red light multiplexer 52 according to the time sequence, and transmits the red PWM brightness adjusting signal to the red laser light source 6, so that the red laser light source 6 generates red laser light with adjustable brightness; when the blue laser gating signal generated by the FPGA control module 1 is at a high level, the blue laser light source 8 is gated, the light source address signal generated by the FPGA control module 1 selects the red light PWM brightness adjusting signal, the green light PWM brightness adjusting signal, the blue light PWM brightness adjusting signal and the yellow light PWM brightness adjusting signal generated by the FPGA control module 1 through the blue light multiplexer 51 according to the time sequence, and transmits the PWM brightness adjusting signals of the relevant colors to the blue laser light source 8, so that the red laser, the green laser, the yellow laser and the blue laser with adjustable brightness are excited by the blue laser with adjustable brightness in cooperation with the laser color wheel 2; the red laser generated by the red laser light source 6 and the blue laser light source 8 is used for projection display of red and blue laser; the FPGA control module 1 generates a color wheel driving control signal to control the rotation of the laser color wheel 2, and real-time adjustment is carried out through a color wheel feedback signal; the FPGA control module 1 generates a DMD gating signal, a display control address signal, a display data signal and a DMD control signal, and controls the turnover of a DMD chip in the DMD module 4, so that the projection display control of the red-blue double-color laser is completed.
(4) The working mode 4 is as follows:
referring to fig. 1 to 6, the projection control mode is selected through the LCD touch display 3, and the FPGA control module 1 generates a red PWM brightness adjustment signal, a green PWM brightness adjustment signal, a blue PWM brightness adjustment signal, a yellow PWM brightness adjustment signal, a light source address signal, a blue laser gating signal, a green laser gating signal, and a red laser gating signal. When the red laser gating signal generated by the FPGA control module 1 is at a high level, the red laser light source 6 is gated, the light source address signal generated by the FPGA control module 1 selects the red PWM brightness adjusting signal generated by the FPGA control module 1 through the red light multiplexer 52 according to the time sequence, and transmits the red PWM brightness adjusting signal to the red laser light source 6, so that the red laser light source 6 generates red laser light with adjustable brightness; when the green laser gating signal generated by the FPGA control module 1 is at a high level, the green laser light source 7 is gated, and light source address signals generated by the FPGA control module 1 are respectively selected from green PWM brightness adjusting signals generated by the FPGA control module 1 through the green light multiplexer 53 according to a time sequence and are transmitted to the green laser light source 7, so that green laser light with adjustable brightness is generated through the green laser light source 7; when the blue laser gating signal generated by the FPGA control module 1 is at a high level, the blue laser light source 8 is gated, the light source address signal generated by the FPGA control module 1 selects the red light PWM brightness adjusting signal, the green light PWM brightness adjusting signal, the blue light PWM brightness adjusting signal and the yellow light PWM brightness adjusting signal generated by the FPGA control module 1 through the blue light multiplexer 51 according to the time sequence, and transmits the PWM brightness adjusting signals of the relevant colors to the blue laser light source 8, so that the red laser, the green laser, the yellow laser and the blue laser with adjustable brightness are excited by the blue laser with adjustable brightness in cooperation with the laser color wheel 2; red laser generated by the red laser light source 6 and the blue laser light source 8 is commonly used for a red laser projection display part of red, green and blue laser projection display; green laser generated by the green laser light source 7 and the blue laser light source 8 is commonly used for a green laser projection display part of red, green and blue laser projection display; the FPGA control module 1 generates a DMD gating signal, a display control address signal, a display data signal and a DMD control signal, and controls the overturning of a DMD chip in the DMD module 4, so that red, green and blue laser projection display control based on a color wheel is completed.
(5) The working mode 5 is as follows:
referring to fig. 1 to 6, the projection control mode is selected through the LCD touch display 3, and the FPGA control module 1 generates a red PWM brightness adjustment signal, a green PWM brightness adjustment signal, a blue PWM brightness adjustment signal, a light source address signal, a blue laser gating signal, a green laser gating signal, and a red laser gating signal. When the red laser gating signal generated by the FPGA control module 1 is at a high level, the blue laser gating signal generated by the FPGA control module 1 is at a low level, the blue laser light source 8 is not gated, the red laser light source 6 is gated, and the light source address signal generated by the FPGA control module 1 selects the red PWM brightness adjusting signal generated by the FPGA control module 1 through the red light multiplexer 52 according to the time sequence and transmits the red PWM brightness adjusting signal to the red laser light source 6, so that the red laser light source 6 generates red laser with adjustable brightness; when the green laser gating signal generated by the FPGA control module 1 is at a high level, the blue laser gating signal generated by the FPGA control module 1 is at a low level, the blue laser light source 8 is not gated, the green laser light source 7 is gated, and the light source address signal generated by the FPGA control module 1 selects the green PWM brightness adjusting signal generated by the FPGA control module 1 through the green multiplexer 53 according to the time sequence and transmits the green PWM brightness adjusting signal to the green laser light source 7, so that the green laser light source 7 generates green laser with adjustable brightness; when the blue laser gating signal generated by the FPGA control module 1 is at a high level, the blue laser light source 8 is gated, the light source address signal generated by the FPGA control module 1 selects the blue PWM brightness adjusting signal generated by the FPGA control module 1 through the blue light multiplexer 51 according to the time sequence, and transmits the blue PWM brightness adjusting signal to the blue laser light source 8, so that the blue laser light source 8 generates the blue laser with adjustable brightness; the FPGA control module 1 generates a DMD gating signal, a display control address signal, a display data signal and a DMD control signal, and controls the overturning of a DMD chip in the DMD module 4, so that the red, green and blue laser projection display control without using a color wheel is completed.
(6) The working mode 6 is as follows:
referring to fig. 1 to 6, the projection control mode is selected through the LCD touch display 3, and the FPGA control module 1 generates a red PWM brightness adjustment signal, a green PWM brightness adjustment signal, a blue PWM brightness adjustment signal, a light source address signal, a blue laser gating signal, a green laser gating signal, and a red laser gating signal. When the red laser gating signal generated by the FPGA control module 1 is at a high level, the blue laser gating signal generated by the FPGA control module 1 is at a low level, the blue laser light source 8 is not gated, the red laser light source 6 is gated, and the light source address signal generated by the FPGA control module 1 selects the red PWM brightness adjusting signal generated by the FPGA control module 1 through the red light multiplexer 52 according to the time sequence and transmits the red PWM brightness adjusting signal to the red laser light source 6, so that the red laser light source 6 generates red laser with adjustable brightness; when the green laser gating signal generated by the FPGA control module 1 is at a high level, the blue laser gating signal generated by the FPGA control module 1 is at a low level, the blue laser light source 8 is not gated, the green laser light source 7 is gated, and the light source address signal generated by the FPGA control module 1 selects the green PWM brightness adjusting signal generated by the FPGA control module 1 through the green multiplexer 53 according to the time sequence and transmits the green PWM brightness adjusting signal to the green laser light source 7, so that the green laser light source 7 generates green laser with adjustable brightness; when the blue laser gating signal generated by the FPGA control module 1 is at a high level, the blue laser light source 8 is gated, the light source address signal generated by the FPGA control module 1 selects the blue PWM brightness adjusting signal generated by the FPGA control module 1 through the blue light multiplexer 51 according to the time sequence, and transmits the blue PWM brightness adjusting signal to the blue laser light source 8, so that the blue laser light source 8 generates the blue laser with adjustable brightness; the FPGA control module 1 generates red light DMD gating signals, red light DMD display control address signals, red light DMD display data signals, red light DMD control signals, green light DMD gating signals, green light DMD display control address signals, green light DMD display data signals, green light DMD control signals, blue light DMD gating signals, blue light DMD display control address signals, blue light DMD display data signals and blue light DMD control signals, so that the red light DMD chip, the green light DMD chip and the blue light DMD chip in the DMD module 4 are controlled to overturn, and accordingly red, green and blue laser projection display control without using a color wheel is completed.
The invention has been described in further detail in order to avoid limiting the scope of the invention, and it is intended that all such equivalent embodiments be included within the scope of the following claims.
Claims (5)
1. A novel laser light source control display device is characterized by comprising an FPGA control module (1), a laser color wheel (2), an LCD touch display screen (3), a DMD module (4), a light source control module (5), a red laser light source (6), a green laser light source (7) and a blue laser light source (8), wherein the FPGA control module is respectively connected with the laser color wheel (2), the LCD touch display screen (3), the DMD module (4) and the light source control module (5); the light source control module (5) is respectively connected with the red laser light source (6), the green laser light source (7) and the blue laser light source (8); the light source control module (5) is composed of a plurality of gating multiplexers, the single gating multiplexers respectively complete the control of laser light sources of single color through single-color laser PWM signal lines and are connected with the FPGA control module through the light source PWM signal lines, light source address lines and the light source gating signal lines, the FPGA control module enables the light source control module (5) to independently control the display brightness and gating state of blue laser, the display brightness and gating state of red laser and the display brightness and gating state of green laser by changing the duty ratio of laser PWM signals, and therefore projection display control based on single-color laser, projection display control based on double-color laser and projection display control based on three-color laser are achieved.
2. The novel laser light source control display device as claimed in claim 1, wherein the FPGA control module (1) is connected with the laser color wheel (2) through a color wheel drive control signal line and a color wheel feedback signal line; the FPGA control module (1) is connected with the LCD touch display screen (3) through an RGB-LCD signal line; the FPGA control module (1) is connected with the DMD module (4) through a DMD gating signal line, an address signal line, a data signal line and a control signal line; the FPGA control module (1) is connected with the light source control module (5) through a light source PWM signal line, a light source address line and a light source gating signal line; the light source control module (5) is connected with the red laser light source (6) through a red laser PWM signal line; the light source control module (5) is connected with the green laser light source (7) through a green laser PWM signal line; the light source control module (5) is connected with the blue laser light source (8) through a blue laser PWM signal line.
3. The novel laser light source control display device as claimed in claim 1, wherein the FPGA control module (1) adopts a Kintex-7 XC7K325T FPGA.
4. The novel laser light source control display device as claimed in claim 1, wherein the laser color wheel (2) can be excited under blue laser light to generate red, green and blue laser light.
5. The novel laser light source control display device according to claim 1, wherein the DMD module (4) is composed of a DMD chip and a DMD power supply.
Priority Applications (1)
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