CN210743494U

CN210743494U - Panel type optical communication device

Info

Publication number: CN210743494U
Application number: CN201921568387.5U
Authority: CN
Inventors: 王强; 牛旭恒; 方俊; 李江亮
Original assignee: Beijing Whyhow Information Technology Co Ltd
Current assignee: Beijing Whyhow Information Technology Co Ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-06-12
Anticipated expiration: 2029-09-20

Abstract

There is provided a panel type optical communication apparatus including: a circuit board having thereon a driving circuit for controlling the panel light source; a panel-type light source divided into a plurality of light emitters, one or more of the plurality of light emitters being independently controllable by the drive circuit for communicating information; and a grid, which is opaque, for separating the plurality of light emitters.

Description

Panel type optical communication device

Technical Field

The utility model relates to an optical communication field especially relates to a panel light communication device.

Background

Optical communication devices are also referred to as optical labels, and these two terms are used interchangeably in this application. The optical label can transmit information by emitting different lights, which has advantages of a long recognition distance, a loose requirement on visible light conditions, and the information transmitted by the optical label can be changed with time, so that a large information capacity and a flexible configuration capability can be provided. An optical label may typically include a driving circuit and at least one light source, the driving circuit may drive the light source through different driving modes to convey different information outwards through light-dark changes, color changes, imaging pattern changes (e.g., different stripes appear in the imaging of the light source), and the like of the light source.

Fig. 1 shows an exemplary optical label 100 that includes three separate light sources (first light source 101, second light source 102, and third light source 103, respectively). The optical label 100 further comprises a driving circuit (not shown in fig. 1) for selecting a respective driving mode for each light source depending on the information to be transferred. For example, in different driving modes, the driving circuit may use different driving signals to control the manner in which each light source emits light, so that when the optical label 100 is photographed using the apparatus having an imaging function, the images of the light sources therein may present different appearances (e.g., different colors, brightness, stripe patterns, etc.). By analyzing the images of the light sources in the optical label 100, the driving mode of each light source at the moment can be analyzed, so that the information transmitted by the optical label 100 at the moment can be analyzed.

Fig. 2 shows an image of the optical label 100 taken by a rolling shutter imaging device in a low exposure mode when the optical label 100 is communicating information, wherein the image of the first light source 101 exhibits relatively narrow stripes and the images of the second light source 102 and the third light source 103 exhibit relatively wide stripes. By analyzing the imaging of the light sources in the optical label 100, the driving pattern of each light source at the moment can be analyzed, so that the information transmitted by the optical label 100 at the moment can be analyzed. The optical label 100 may also communicate information by way of a change in the brightness (e.g., by turning the light source on or off) or a change in color of the respective light sources therein, as long as the changes are distinguishable by the human eye or a computer.

However, the optical label requires the use of a plurality of independent light sources physically spaced apart, which imposes limitations on the application of the optical label. There are a large number of panel-type light-emitting devices in the related art, and therefore, it is desirable to implement such panel-type light-emitting devices as panel-type optical labels capable of optical communication.

SUMMERY OF THE UTILITY MODEL

An aspect of the utility model relates to a panel-type optical communication device, include: a circuit board having thereon a driving circuit for controlling the panel light source; a panel-type light source divided into a plurality of light emitters, one or more of the plurality of light emitters being independently controllable by the drive circuit for communicating information; and a grid, which is opaque, for separating the plurality of light emitters.

Optionally, the panel-type optical communication device further includes: a light homogenizing plate located above the grating.

Optionally, the panel-type optical communication device further includes: a grid fixing device for fixing the grid.

Optionally, wherein the panel-form light source comprises one or more of: COB panels, dot matrix light sources, light guide plates, or a plurality of discrete light sources.

Optionally, wherein the panel light source comprises a plurality of discrete light sources, and at least one discrete light source is in each of the luminaires.

Optionally, wherein one or both sides of the grid are coated with a light reflective material.

Optionally, wherein one or more of the plurality of luminaires is configured for aiding information identification.

Optionally, wherein each light emitter of the panel light source has substantially the same average light intensity or luminous flux.

Optionally, the circuit board has a plurality of driving circuits corresponding to the plurality of light emitters, respectively.

Optionally, wherein the driving circuit is capable of controlling a first light emitter and a second light emitter of the plurality of light emitters by a first driving signal and a second driving signal, respectively.

Through the utility model discloses a scheme can realize panel light emitting device for can carrying out optical communication's panel optical communication device, and light source wherein is divided for a plurality of luminous bodies, and these luminous bodies can be controlled in order to outside transmission information independently. In addition, the grid is adopted in the panel type light-emitting device to separate the light-emitting bodies, so that light interference among the light-emitting bodies can be greatly reduced or eliminated, and accurate identification of information is facilitated.

Drawings

Embodiments of the invention are further described below with reference to the accompanying drawings, in which:

FIG. 1 illustrates an exemplary optical label;

FIG. 2 shows an image of a photo label taken by a rolling shutter imaging device in a low exposure mode;

fig. 3 shows an exploded schematic view of a panel-style optical label according to one embodiment of the present invention;

fig. 4 shows a plurality of luminaires separated by a grid according to an embodiment of the invention;

fig. 5 illustrates a panel light source according to an embodiment of the present invention;

fig. 6 illustrates a panel type light source and a driving circuit thereof according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is further described in detail by the following embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Fig. 3 is an exploded schematic view of a panel-type optical tag according to an embodiment of the present invention, which includes a housing 301, a circuit board 302, a light source 303, a grating fixing device 304, a grating 305, and a light-equalizing plate 306.

The circuit board 302 is mounted within the housing 301 and may be adjacent to the bottom surface of the housing 301. The circuit board 302 is used to power the light source 303 and control the operation of the light source 303. For example, a driving circuit may be disposed on the circuit board 302, and the driving circuit may be configured to control a driving mode or a light emitting manner of the light source 303 using different driving signals. In other embodiments, the circuit board 302 may be otherwise arranged, such as integrating the circuit board 302 with the light source 303, or arranging the circuit board 302 elsewhere.

The light source 303 is mounted above the circuit board 302, and a panel type light source (e.g., COB panel) is used here. The light source 303 may be divided or segmented into a plurality of luminaries or light emitting areas, each of which may for example contain one or more LED lamps. The driving circuit can control the driving mode or the light emitting mode of the LED lamp in each luminous body as a whole. By dividing the panel light source 303 into a plurality of luminous bodies, more than one luminous body can be used to simultaneously transmit information to the outside, so that a higher information transmission speed can be achieved; moreover, as more than one luminous body is provided, relative coding of information can be realized among different luminous bodies of the same panel type light source, which can reduce or avoid adverse effects of different ambient light conditions on light source imaging identification and is beneficial to accurate identification of information.

In one embodiment, one or more of the plurality of luminaires of the panel-type light source may not be used for information transfer, but for some other auxiliary function, e.g. for illumination or for auxiliary information identification, etc. When used for aiding in information identification, the non-information transferring luminaires may, for example, be configured to aid in the positioning of the information transferring luminaires, thereby facilitating subsequent identification of information transferred by the information transferring luminaires.

A grill fixing device 304 is installed above the light source 303, and is used to fix the grill 305. In this embodiment, the grill fixture 304 is a frame having slots therein for receiving and securing the grill 305.

The grid 305 is opaque and separates the divided individual lights of the light source 303 to reduce or eliminate light interference between the different lights.

The light homogenizing plate 306 is installed above the grating 305 for generating a light homogenizing effect on the light emitted from the light source 303. The light homogenizing plate 306 may be any transparent or translucent material known in the art that produces a uniform effect on the light emitted by the light source and may be colored such that the panel-style light label may appear to be a particular color. By adjusting the distance between the light homogenizing plate 306 and the light source 303, an appropriate distance that can achieve a desired imaging effect or visual effect can be determined, and preferably, the distance enables the panel-type light label to exhibit a substantially uniform imaging effect or visual effect as a whole, and occurrence of noticeable light spots is avoided.

Fig. 4 shows a plurality of luminaires separated by a grid according to an embodiment of the invention. As shown in fig. 4, the panel light source is divided into 4 independent light emitters, which are a light emitter 1, a light emitter 2, a light emitter 3, and a light emitter 4. A grid (shown by thicker lines) mounted on the panel light source separates the 4 emitters of the panel light source. The grid may be made of a thin sheet coated with a reflective material or film, both sides of which are reflective but opaque. It will be appreciated that the grid may also be non-reflective or reflective on only one side. By using a grid, a plurality of different light emitters of a panel-type light source can be separated, so that optical interference between the light emitters can be greatly reduced or eliminated.

The driving circuit on the circuit board can independently control one or more of the divided luminous bodies to transmit information to the outside. For example, the circuit board may be configured such that the LED lamps in each of the luminous bodies of the panel-type light source are controlled as a whole, and thus, information may be transmitted to the outside by controlling one or more of the luminous bodies (for example, controlling their driving mode or light emission pattern). In one embodiment, the four luminaires may all be made to be independently controllable. In another embodiment, the

luminaires

1 and 2 as a whole may be controlled such that the

luminaires

1 and 2 emit light in the same way. According to actual needs, one or more of the four luminous bodies can be controlled to transmit information to the outside.

In some embodiments, the grid securing device may be an optical grade acrylic plate having a slot therein for receiving and securing the grid.

In one embodiment, different forms of grid fixing means may be employed to fix the grid. For example, the grid may be fixed by a groove formed on the inner side surface of the housing 301 or on the light source 303, and any clamping means, adhesive means, attachment means, or the like having a position fixing function may be used as the grid fixing means.

In one embodiment, the grid fixture and the grid may be integrated together as one device.

In one embodiment, the grid fixing means may be omitted if the grid itself can be fixed at a specific position in the panel-type optical label. For example, the grille itself can have an outer frame which can be adapted to the respective inner side of the housing, and by abutting the outer frame of the grille against the inner side of the housing, the grille can be fixed accordingly, so that no further grille fixing device is required.

In one embodiment, the grid may be fabricated or integrated on the light source 303.

In one embodiment, the use of a light homogenizing plate 306 may not be required.

In one embodiment, the light source 303 may be implemented in different forms, such as a dot matrix light source, a light guide plate, a plurality of discrete light sources, or the like, or a combination thereof. Where a plurality of discrete light sources are employed, the discrete light sources may be divided into a plurality of luminaires (or groups) with at least one discrete light source in each luminaire. Each luminaire (or discrete light sources therein) may be independently controlled in a similar manner.

Fig. 5 illustrates a panel-style light source according to an embodiment of the present invention, on which a number of lamp beads (e.g., LED lamp beads) are arranged. The panel light source is divided or divided into four regions, each region serving as one light emitter, which is a light emitter 1, a light emitter 2, a light emitter 3, and a light emitter 4. The lamp beads in each luminous body are connected together in series and/or in parallel. There are also four pairs of control pads in the panel light source, the four pairs of control pads being associated with the four luminaires respectively, to enable control of the respective luminaires via the control pads using the drive signals.

Fig. 6 illustrates a panel type light source and a driving circuit thereof according to an embodiment of the present invention. In fig. 6, a panel-type light source is schematically shown, wherein four light emitters are coupled via their control pads to respective driving circuits, respectively drive 1, drive 2, drive 3, and drive 4. The driving circuits may be part of the circuit board 302, and each driving circuit may control a corresponding light by a driving signal.

In one embodiment, the individual driving circuits shown in fig. 6 may also be implemented as one integrated driving circuit that is coupled to each light emitter in the panel light source and is capable of controlling the light emitters separately by different driving signals.

In one embodiment, if two or more luminaires always operate in the same manner, the luminaires may be made to share one drive circuit, or the same drive signal may be used to control the luminaires.

In one embodiment, each light emitter of the light source of the panel-type optical label can be made to have substantially the same average light intensity or luminous flux during operation, so that the entire panel-type optical label appears to the human eye to have substantially uniform brightness.

In one embodiment, the blinking frequency of the light for transmitting information (or, the frequency of the driving signal for the light) of the panel type optical tag is set to be greater than 60 hz so that the human eye does not perceive the blinking phenomenon, thereby perceiving that the panel type optical tag is only a general panel type light emitting device or lighting device. Thus, the embodiment of the utility model discloses a panel light label that has illumination function and information transfer light energy concurrently can be provided.

In one embodiment, different identification patterns (e.g., words, letters, graphics, etc.) may be painted or affixed to the surface of the light-equalizing plate 306 to expand the range of applications and scenarios of the panel-type light label.

References herein to "various embodiments," "some embodiments," "one embodiment," or "an embodiment," etc., indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in various embodiments," "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in various places throughout this document are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with a feature, structure, or characteristic of one or more other embodiments without limitation, as long as the combination is not logical or operational. Expressions like "according to a" or "based on a" appearing herein mean non-exclusive, i.e. "according to a" may cover "according to a only", and also "according to a and B", unless it is specifically stated that the meaning is "according to a only". Additionally, the various elements of the drawings of the present application are merely schematic illustrations and are not drawn to scale.

Having thus described several aspects of at least one embodiment of this invention, it is to be appreciated various alterations, modifications, and improvements will readily occur to those skilled in the art. Such alterations, modifications, and improvements are intended to be within the spirit and scope of the invention. Although the present invention has been described in connection with the preferred embodiments, it is not intended to limit the invention to the embodiments described herein, but rather, to include various changes and modifications without departing from the scope of the invention.

Claims

1. A panel-type optical communication device, comprising:

a circuit board having thereon a driving circuit for controlling the panel light source;

a panel light source divided into a plurality of light emitters, one or more of the plurality of light emitters being independently controllable by the drive circuit; and

a grid that is opaque to light, the grid isolating the plurality of emitters from one another.

2. The panel-type optical communication device according to claim 1, further comprising: a light homogenizing plate located above the grating.

3. The panel-type optical communication device according to claim 1, further comprising: a grid fixing device for fixing the grid.

4. The fascia optical communication apparatus of claim 1 or 2, wherein the fascia light source comprises one or more of: COB panels, dot matrix light sources, light guide plates, or a plurality of discrete light sources.

5. A fascia optical communication device as defined in claim 1 or 2, wherein the fascia light source includes a plurality of discrete light sources, and at least one discrete light source is provided in each of the light emitters.

6. A panel-type optical communication device according to claim 1 or 2, wherein one or both side faces of the grating are coated with a light reflecting material.

7. The fascia optical communications apparatus of claim 1 or 2, wherein one or more of the plurality of lights are configured to assist in information identification.

8. The fascia optical communication apparatus of claim 1 or 2, wherein the individual light emitters of the fascia light source have substantially the same average light intensity or luminous flux.

9. The panel-type optical communication device according to claim 1 or 2, wherein the circuit board has a plurality of drive circuits corresponding to the plurality of light emitters, respectively.

10. The panel optical communication device according to claim 1 or 2, wherein the drive circuit is capable of controlling a first light emitter and a second light emitter of the plurality of light emitters by a first drive signal and a second drive signal, respectively.