CN210724811U - Optical communication type projection display system - Google Patents
Optical communication type projection display system Download PDFInfo
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- CN210724811U CN210724811U CN201922377193.3U CN201922377193U CN210724811U CN 210724811 U CN210724811 U CN 210724811U CN 201922377193 U CN201922377193 U CN 201922377193U CN 210724811 U CN210724811 U CN 210724811U
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- guide plate
- light guide
- optical communication
- display screen
- light
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Abstract
The utility model provides an optical communication type projection display system, belonging to the field of display equipment manufacture; the utility model discloses a: the device comprises a display screen, a data interface, an LED receiver and a signal converter; the edge of the display screen is provided with a light guide plate, and the back of the light guide plate is covered with a light reflecting coating; the data interface is electrically connected with the display screen; the signal converter is arranged on the data interface and is connected with the LED receiver; the LED receiver comprises a plurality of photodiodes, and the photodiodes are all electrically connected with the signal converter; each photodiode is uniformly distributed in the light guide plate and is arranged close to the light reflecting coating. The utility model discloses a set up the light guide plate in the front of display screen, utilize light guide plate furthest's collection light signal to make the work that the LED receiver in the light guide plate can be better, consequently the interference killing feature is stronger when carrying out optical communication, and use cost is lower.
Description
Technical Field
The utility model relates to a display manufacturing technology especially relates to an optical communication formula projection display system, belongs to signal transmission and makes technical field.
Background
Visible light communication is a new communication mode emerging based on the fourth generation environment-friendly and energy-saving lighting source. The carrier frequency is adjusted to the visible light frequency range in the radio wave, and the problem of radio frequency communication frequency spectrum resources can be well solved. Meanwhile, visible light communication can be widely applied to occasions sensitive to electromagnetic waves, such as airplanes, hospitals and the like. On the other hand, visible light communication is used as a new communication mode, and can be compatible with traditional radio frequency communication, thereby enriching and enhancing the mode and effect of wireless communication access. At the present stage, visible light communication becomes a research hotspot in the communication field, and the application of the visible light communication has wide development prospect.
In the prior art, wiring is generally required to be adopted if display content of a small screen is projected to a large screen; however, for a large-screen display which needs to switch signal sources frequently, a router needs to be adopted and a special line system needs to be matched for adjustment and switching in the wiring process, so that errors are prone to occur, the cost of the whole large-screen display system can greatly rise, the cost is high, and the temporary set-up of a projection system is not facilitated.
Another method in the prior art is to use an optical communication mode to perform projection, but due to the sensitivity of optical communication to frequency, the cost of devices used for optical communication is high, especially for optical receiving devices, the devices are easily interfered by external light, and the manufacturing cost is high, which is not favorable for long-term stable use of the system.
SUMMERY OF THE UTILITY MODEL
The utility model provides a new optical communication formula projection display system gathers optical signal through setting up the light guide plate around the large-size screen to can realize adopting the lower light receiving device of cost to accomplish wireless optical communication transmission, with the technical problem that large-size screen display system signal switches loaded down with trivial details, the system cost is higher among the solution prior art.
The utility model discloses optical communication formula projection display system, include: the device comprises a display screen, a data interface, an LED receiver and a signal converter; the edge of the display screen is provided with a light guide plate, and the back of the light guide plate is covered with a light reflecting coating;
the data interface is electrically connected with the display screen; the signal converter is arranged on the data interface and is connected with the LED receiver;
the LED receiver comprises a plurality of photodiodes, and the photodiodes are all electrically connected with the signal converter; each photodiode is uniformly distributed in the light guide plate and is arranged close to the light reflecting coating.
The optical communication type projection display system as described above, wherein the system further comprises: a plurality of LED light sources for transmitting light signals to the LED receivers; each LED light source is located in front of the display screen.
The optical communication type projection display system as described above, wherein the light guide plate is a transparent flat plate structure, the light guide plate is provided with a mounting hole, and the display screen is embedded in the light guide plate through the mounting hole.
The optical communication projection display system as described above, wherein a reflective film is coated on the side surface of the light guide plate in the thickness direction, the reflective film on both sides of the light guide plate and the reflective coating layer form a reflective groove with a C-shaped cross section, and the light guide plate is located in the reflective groove.
The optical communication type projection display system as described above, wherein the data interface is an HDMI interface or a USB interface.
The optical communication type projection display system as described above, wherein the display screen has a power line, and the signal converter has a power connector; the power connector is communicated with the power line.
The utility model discloses a set up the light guide plate in the front of display screen, utilize light guide plate furthest's collection light signal to make the work that the LED receiver in the light guide plate can be better, consequently the interference killing feature is stronger when carrying out optical communication, and use cost is lower.
Drawings
Fig. 1 is a schematic structural diagram of an optical communication type projection display system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display screen of an optical communication type projection display system according to an embodiment of the present invention;
FIG. 3 is a side view of the structure of FIG. 2;
fig. 4 is a cross-sectional view taken at a-a in fig. 3.
Detailed Description
Optical communication formula projection display system can adopt following material to make, and be not limited to following material, for example: liquid crystal display screen, light guide plate, reflective paint, plastic, rubber, photosensitive device, etc.
Fig. 1 is a side view of an optical communication type projection display system according to an embodiment of the present invention; and refer to fig. 2 to 4.
The utility model discloses optical communication formula projection display system, include: the system comprises a display screen 1, a data interface 2, an LED receiver and a signal converter 3; the edge of the display screen 1 is provided with a light guide plate 10, and the back of the light guide plate 10 is covered with a light reflecting coating 11; the light guide plate 10 is generally made of a highly light-transmitting material such as optical glass, resin lens, or optical glass.
The data interface 2 is electrically connected with the display screen 1; the signal converter 3 is installed on the data interface 2, and the signal converter 3 is connected with the LED receiver; the LED receiver is used for receiving an optical signal transmitted by optical communication and transmitting the optical signal to the signal converter for demodulation and conversion.
In this embodiment, it is obvious that the signal converter 3 may further include, according to actual needs: the video signal conversion circuit comprises a single chip microcomputer, an LTC1655 type D/A conversion circuit, a signal amplification circuit, an equalization circuit, a comparison circuit, a low-pass filter circuit, a reset circuit, a crystal oscillator circuit and other circuits which can convert optical signals into video signals, and the circuits can be realized by signal conversion and modulation and demodulation means in the prior art, and are not described herein again.
The LED receiver comprises a plurality of photodiodes 4, and the photodiodes 4 are all electrically connected with the signal converter 3; each of the photodiodes 4 is uniformly distributed in the light guide plate 10 and disposed close to the light reflecting coating 11. The photodiode 4 is used for converting the received optical signal into an electrical signal, so as to transmit the electrical signal to a signal converter for signal conversion.
It should be noted that, the utility model discloses an optical communication formula projection display system can adopt current all kinds of light signal to accept and the light signal turns into video signal's equipment and device completely, the utility model discloses the most important characteristics lie in setting up light receiving components and parts (photodiode) in the rear end of light guide plate to cooperation reflection of light coating, thereby make light receiving components and parts acquire the ability reinforcing by a wide margin of light signal, the indirect precision of chooseing for use that has reduced light receiving components and parts, thereby make whole optical communication's cost reduce by a wide margin.
The utility model discloses a set up the light guide plate in the front of display screen, utilize light guide plate furthest's collection light signal to make the work that the LED receiver in the light guide plate can be better, consequently the interference killing feature is stronger when carrying out optical communication, and use cost is lower.
In the use process, stable and quick optical communication video transmission can be realized only by ensuring that an LED light source for sending optical signals exists in front of the display screen, so that images of a small screen can be projected to a large screen.
The optical communication type projection display system of the embodiment, wherein the system further comprises: a plurality of LED light sources for transmitting light signals to the LED receivers; each LED light source is positioned in front of the display screen 1. Therefore, the LED light source can realize smaller transmitting power to finish optical communication, and the selection cost of the optical communication device of the system is reduced.
In the optical communication type projection display system of the embodiment, the light guide plate 10 is a transparent flat plate structure, a mounting hole is formed in the light guide plate 10, and the display screen 1 is embedded in the light guide plate 10 through the mounting hole.
The light guide plate 10 may be a rectangular frame structure, fixed around the display screen, and flush with the display screen.
As in fig. 3 and 4; in the optical communication projection display system of this embodiment, a reflective film 12 is coated on a side surface of the light guide plate 10 in the thickness direction, the reflective film 12 on two sides of the light guide plate 10 and the reflective coating 11 form a reflective groove with a C-shaped cross section, and the light guide plate 10 is located in the reflective groove.
The reflecting light groove design of C shape has avoided the loss of light in the side, plays the effect of assembling light, adopts a plurality of photoelectric diode simultaneously, can receive comparatively abundant light signal, improves light intensity after, and the sensitivity of the photosensitive device of selecting can suitably descend, plays the effect that reduces the photoelectric diode cost.
In the optical communication type projection display system of the present embodiment, the data interface 2 is an HDMI interface or a USB interface.
The optical communication type projection display system of the present embodiment, wherein the display screen 1 has a power line, and the signal converter 3 has a power connector; the power connector is communicated with the power line.
Therefore, a low-voltage direct-current power supply can be conveniently obtained in the working process of the signal converter 3.
Additionally, the utility model discloses an optical communication formula projection display system cost of manufacture is not high, and structural design is compact, and the structure is ingenious, and the finished product quality is stable, and the signal is difficult for receiving the interference, uses and maintains convenient operation, is applicable to the large screen projection system of various interim structures.
The above embodiment numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments. Through the above description of the embodiments, those skilled in the art will clearly understand that the above embodiment method can be implemented by some modifications plus the necessary general technical overlap; of course, the method can also be realized by simplifying some important technical features in the upper level. Based on such understanding, the technical solution of the present invention essentially or the part contributing to the prior art is: the light guide plate acts on and the structure, and cooperate the utility model discloses each embodiment the structure.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. An optical communication projection display system, comprising: the device comprises a display screen, a data interface, an LED receiver and a signal converter; the edge of the display screen is provided with a light guide plate, and the back of the light guide plate is covered with a light reflecting coating;
the data interface is electrically connected with the display screen; the signal converter is arranged on the data interface and is connected with the LED receiver;
the LED receiver comprises a plurality of photodiodes, and the photodiodes are all electrically connected with the signal converter; each photodiode is uniformly distributed in the light guide plate and is arranged close to the light reflecting coating.
2. The optical communication projection display system of claim 1, wherein the system further comprises: a plurality of LED light sources for transmitting light signals to the LED receivers; each LED light source is located in front of the display screen.
3. The optical communication type projection display system of claim 1, wherein the light guide plate is a transparent flat plate structure, the light guide plate has a mounting hole, and the display screen is embedded in the light guide plate through the mounting hole.
4. The optical communication type projection display system of claim 1, wherein a reflective film is coated on the side surface of the light guide plate in the thickness direction, the reflective film and the reflective coating on both sides of the light guide plate form a reflective groove having a C-shaped cross section, and the light guide plate is located in the reflective groove.
5. The optical communication type projection display system according to any one of claims 1 to 3, wherein the data interface is an HDMI interface or a USB interface.
6. The optical communication projection display system of any of claims 1-3, wherein the display screen has a power cord, the signal converter has a power connector; the power connector is communicated with the power line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922377193.3U CN210724811U (en) | 2019-12-24 | 2019-12-24 | Optical communication type projection display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922377193.3U CN210724811U (en) | 2019-12-24 | 2019-12-24 | Optical communication type projection display system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210724811U true CN210724811U (en) | 2020-06-09 |
Family
ID=70936655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922377193.3U Expired - Fee Related CN210724811U (en) | 2019-12-24 | 2019-12-24 | Optical communication type projection display system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210724811U (en) |
-
2019
- 2019-12-24 CN CN201922377193.3U patent/CN210724811U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200609 Termination date: 20211224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |