CN114205444B - Lighting control device for vision protection - Google Patents
Lighting control device for vision protection Download PDFInfo
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- CN114205444B CN114205444B CN202111027031.2A CN202111027031A CN114205444B CN 114205444 B CN114205444 B CN 114205444B CN 202111027031 A CN202111027031 A CN 202111027031A CN 114205444 B CN114205444 B CN 114205444B
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
- H04M1/72412—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories using two-way short-range wireless interfaces
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
- H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Human Computer Interaction (AREA)
- Environmental & Geological Engineering (AREA)
- Telephone Function (AREA)
Abstract
The invention discloses a vision protection lighting control device, which comprises a shell and a circuit board, wherein the shell is provided with a light sensing hole groove, a plurality of light guide hole grooves and a light blocking part; the circuit board is provided with a vision protection controller, a photosensitive module, a communication module and a lighting module which are electrically connected with the vision protection controller; the photosensitive module detects the ambient light brightness at the back side of the mobile terminal and generates a first illumination reference value, and the first illumination reference value is generated after primary light emission; the communication module receives a second illumination reference value reflecting the screen brightness of the mobile terminal; the vision protection controller outputs an illumination control signal or an illumination adjustment signal to the illumination module according to the first illumination reference value and the second illumination reference value; the lighting module emits light according to the lighting control signal and further adjusts the brightness of the emitted light according to the lighting adjustment signal. The invention can realize proper eye-protection illumination in a dark light environment.
Description
Technical Field
The invention relates to the technical field of peripheral products of mobile terminals, in particular to a vision protection illumination control device.
Background
With the popularization of video terminal equipment such as computers, mobile phones and televisions, more and more people suffer from eye discomfort symptoms such as asthenopia, eye irritation, eye reds and blurred vision. An important etiology of these symptoms is that users use electronic devices for long periods of time in such environments: the brightness of the screen of the electronic device is higher than the background brightness of the electronic device, so that a bright area is formed on the screen side of the electronic device, but a dark area is formed on the back side of the electronic device, thus causing the incompatibility between the brightness of the screen and the background brightness of the electronic device. Because the pupil size regulated by eyes of a user according to the background environment and the brightness of the display screen are not suitable in the environment, the eyes of the user can easily feel tired after staring at the display screen for reading for a long time, and visual health is affected.
Among many video terminals, mobile phones are most commonly used, so that the problem of inconsistent brightness between a screen and a background is most urgent in the process of using the mobile phones by users. The mobile phone is used as an intelligent mobile terminal, and besides a display screen, a plurality of sensors and light-emitting elements are integrated, wherein the light sensor arranged near a receiver on the front side of the mobile phone and the flash lamp arranged on the back side of the mobile phone are included.
In the prior art for primarily solving the problem that the brightness of the screen is not coordinated with the background brightness, a light sensor arranged near the receiver is used for monitoring the brightness of the surrounding environment, and then the brightness of the screen is automatically adjusted according to the detection value. However, this solution also causes visual fatigue when the brightness of the screen is reduced to approach the limit value, and when the screen is used in a dark environment, the light sensor also receives the light of the display screen reflected by the face of the user, so that the brightness of the background environment cannot be accurately reflected, and it is difficult to accurately coordinate the brightness between the screen and the background.
In the existing scheme for further solving the problem that the brightness of the screen is not coordinated with that of the background, a flash lamp arranged on the back of the mobile phone is also overlapped and utilized, namely, the flash lamp is automatically turned on according to the detection value of the brightness of the surrounding environment to coordinate the brightness between the screen and the background. However, first, the general purpose of a flashlight is flashlight or photo-taking light supplement, which is mainly suitable for illuminating medium and long distance objects, if there is no suitable reflecting surface, the light supplement intensity is easily too high or too low; secondly, because the flash lamp is fixedly arranged at the edge or the corner of the back of the mobile phone, the left and right light supplementing is not uniform after the light supplementing is started; third, since only the ambient brightness is detected and used as a trigger condition for the light-compensating mode, the trigger condition cannot accurately reflect the co-scheduling of the screen and the background brightness, which results in that the light-compensating is either started unnecessarily or the light-compensating intensity is too low or too high. Therefore, the existing technical scheme of utilizing the inherent flash lamp of the mobile phone for light supplementing still cannot fully ensure the visual health of the user.
Disclosure of Invention
Based on the above-mentioned current situation, a main object of the present invention is to provide a vision protection lighting control device that can properly perform light supplement to ensure visual health of a user when the user uses a mobile terminal in a dim light environment.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a vision protecting lighting control device for attachment to a non-edge line area of a back surface of a mobile terminal and independent of the mobile terminal prior to attachment to the back surface of the mobile terminal;
the vision protection lighting control device comprises a shell and a circuit board,
the shell is provided with a photosensitive hole groove, a plurality of light guide hole grooves arranged on the periphery of the photosensitive hole groove and a light blocking part positioned between the photosensitive hole groove and the light guide hole groove;
the circuit board is arranged in the shell and is provided with a vision protection controller, and a photosensitive module, a communication module and a lighting module which are electrically connected with the vision protection controller;
the photosensitive module comprises a photosensitive element arranged corresponding to the photosensitive hole groove, a photosensitive surface of the photosensitive element faces the back side of the mobile terminal, and the photosensitive module is used for detecting the ambient light brightness of the back side of the mobile terminal and generating a first illumination reference value according to the ambient light brightness;
The communication module is used for being in communication connection with the mobile terminal and at least used for receiving a second illumination reference value which reflects the screen brightness of the mobile terminal and is transmitted by the mobile terminal;
the vision protection controller is used for receiving the first illumination reference value and the second illumination reference value and outputting an illumination control signal or an illumination adjustment signal to the illumination module according to the first illumination reference value and the second illumination reference value;
the lighting module comprises a light emitting element arranged corresponding to the light guide hole groove and used for emitting light according to the lighting control signal or adjusting the light emitting brightness according to the lighting adjusting signal so as to enable the background brightness of the back side of the mobile terminal to be matched with the screen brightness of the mobile terminal.
Preferably, the light sensing module is further used for continuously detecting the ambient light brightness at the back side of the mobile terminal in a preset mode after the illumination module emits light and generating a first illumination reference value according to the ambient light brightness;
the communication module is also used for receiving a second illumination reference value which reflects the screen brightness of the mobile terminal and is transmitted by the mobile terminal after the illumination module emits light;
the vision protection controller is also used for receiving the first illumination reference value and the second illumination reference value and outputting an illumination control signal or an illumination adjustment signal to the illumination module;
The illumination module is further used for further adjusting the brightness of the emitted light according to the illumination adjusting signal so as to enable the background brightness of the back side of the mobile terminal to be matched with the screen brightness of the mobile terminal;
the illumination control signal comprises a first side control signal and a second side control signal, the first side control signal is used for indicating and adjusting the brightness of the display screen of the mobile terminal, and the communication module is also used for sending the first side control signal to the mobile terminal; the lighting module is used for emitting light according to the second side control signal so as to enable the screen brightness of the mobile terminal to be matched with the background brightness of the back side of the mobile terminal.
Preferably, the illumination adjusting signal comprises a first side adjusting signal and a second side adjusting signal, and the first side adjusting signal is used for indicating and adjusting the brightness of the display screen of the mobile terminal;
the communication module is further used for sending a first side adjusting signal to the mobile terminal; the lighting module is used for emitting light according to the second side adjusting signal so as to enable the screen brightness of the mobile terminal to be matched with the background brightness of the back side of the mobile terminal.
Preferably, the lighting module includes a plurality of light emitting elements, and the second side adjustment signal includes an on number of the light emitting elements and a corresponding driving current magnitude.
Preferably, the light guide hole grooves are long, two light guide hole grooves are arranged and are respectively positioned at the left side and the right side of the photosensitive hole groove, and the length directions of the two light guide hole grooves are perpendicular to the left-right direction; the light-emitting elements are distributed on the left side and the right side of the photosensitive elements of the photosensitive module in two rows, and each row of light-emitting elements is arranged corresponding to one light guide hole groove.
Preferably, the light sensing module is used for detecting the ambient light brightness of the back side of the mobile terminal according to a preset time interval after the illumination module emits light and generating the first illumination reference value according to the ambient light brightness.
Preferably, when the ambient light brightness corresponding to the first illumination reference value is lower than a first preset value and the mobile terminal screen brightness reflected by the second illumination reference value is higher than a second preset value, the vision protection controller generates an illumination control signal according to the first illumination reference value and the second illumination reference value.
Preferably, the vision protection lighting control device further comprises an electric connecting wire assembly, one end of the electric connecting wire assembly is connected with the side surface interface of the mobile terminal, and the other end of the electric connecting wire assembly is electrically connected with the photosensitive module, the communication module, the vision protection controller and the lighting module respectively;
The electrical connection wire assembly is used for being connected with the power management module of the mobile terminal through the side interface of the mobile terminal so as to at least transmit the electrical energy which is obtained from the mobile terminal and is transmitted to the photosensitive module, the vision protection controller and the lighting module.
Preferably, the communication module establishes a bluetooth communication connection with the mobile terminal.
The vision protection illumination control device is attached to the back of the mobile terminal and comprises a shell and a circuit board, wherein a photosensitive module on the circuit board is used for detecting the ambient light brightness of the back side of the mobile terminal, and the photosensitive module comprises a photosensitive element, and the photosensitive element is arranged corresponding to a photosensitive hole groove of the shell, so that the photosensitive surface faces the back side of the mobile terminal and can avoid the emitted light of the screen brightness to a large extent, and therefore the detection can accurately reflect the light intensity of the ambient light, and a first illumination reference value beneficial to subsequent illumination control is generated.
The vision protection lighting control device is also provided with a communication module and is at least used for receiving a second lighting reference value reflecting the screen brightness from the mobile terminal, so that the integrated first lighting reference value can generate the lighting control signals when the first lighting reference value needs to be lighted: the illumination module performs illumination according to the illumination control signal, so that the screen brightness of the mobile terminal is matched with the background brightness of the back side of the mobile terminal, and the situation of improper illumination such as premature illumination, over-strong illumination or over-weak illumination is avoided.
The light blocking part is arranged between the photosensitive element and the light emitting element of the lighting module, so that after the light emitting element emits light, the light blocking part can block the transverse light of the light emitting element, and interference caused by the light of the light emitting element to detection of the photosensitive element is avoided, so that after the lighting module emits light for the first time to realize the lighting atmosphere beneficial to vision protection, the environment light intensity value at the back side of the mobile terminal is conveniently and accurately detected by the photosensitive module to generate a first lighting reference value, and then the vision protection controller is accurately and feedback-controlled by combining with a second lighting reference value to generate a lighting adjustment signal.
In addition, because the eye-protection lighting control device is independent relative to the mobile terminal before being attached to the back of the mobile terminal, when the eye-protection lighting control device is attached to the non-edge area of the back of the mobile terminal in the left-right centering mode, the lighting module can uniformly illuminate left and right, and therefore the air or adjacent objects in a set range can be fully illuminated on one side of the back of the mobile terminal to form sufficient diffuse reflection, and further a lighting atmosphere beneficial to guaranteeing vision health is formed.
Other advantages of the present invention will be set forth in the description of specific technical features and solutions, by which those skilled in the art should understand the advantages that the technical features and solutions bring.
Drawings
Preferred embodiments of the vision-protecting illumination control device according to the present invention will be described below with reference to the accompanying drawings. In the figure:
fig. 1 is a schematic block diagram of a vision-protecting illumination control device according to the present invention;
fig. 2 is a schematic view of an application scenario in which a preferred embodiment of the vision protection lighting control device of the present invention is attached to the back of a mobile terminal;
fig. 3 is a schematic view showing a structure in which another preferred embodiment of the vision-protecting illumination control apparatus according to the present invention is attached to the back surface of a mobile terminal;
FIG. 4 is a schematic view of an exploded construction of a preferred embodiment of a vision-protecting lighting control device in accordance with the present invention;
fig. 5 is a schematic perspective view of another preferred embodiment of a vision-protecting lighting control device according to the present invention;
FIG. 6 is a schematic diagram of an exploded view of the vision-protecting-passport control of FIG. 5;
FIG. 7 is a schematic view of a part of the vision-protecting-passport control apparatus of FIG. 5;
FIG. 8 is a top view of the structure of FIG. 7;
FIG. 9 is a schematic cross-sectional view taken along line IX-IX in FIG. 8;
fig. 10 is a schematic view of the sectional structure of fig. 8 along line XI-XI.
Description of the reference numerals
Detailed Description
Referring to fig. 1 to 10, the vision-protecting lighting control device 100 of the present invention is used for attaching to a non-edge line area of the back surface of the mobile terminal 200 and is independent from the mobile terminal 200 before being attached to the back surface of the mobile terminal 200;
the vision-protecting lighting control device 100 includes a housing 10 and a circuit board 60,
the casing 10 is provided with a light-sensing hole groove 111, a plurality of light-guiding hole grooves 112 arranged on the periphery of the light-sensing hole groove 111, and a light-blocking part 14 arranged between the light-sensing hole groove 111 and the light-guiding hole grooves 112;
the circuit board 60 is installed in the housing 10 and is provided with a vision protection controller 61, and a photosensitive module 62, a communication module 63 and a lighting module 64 electrically connected with the vision protection controller 61;
the photosensitive module 62 includes a photosensitive element 20 disposed corresponding to the photosensitive hole 111, the photosensitive surface of the photosensitive element 20 faces the back side of the mobile terminal 200, and the photosensitive module 62 is configured to detect the ambient light brightness of the back side of the mobile terminal 200 and generate a first illumination reference value according to the ambient light brightness;
The communication module 63 is configured to be communicatively connected to the mobile terminal 200, and at least configured to receive a second illumination reference value transmitted by the mobile terminal 200 and reflecting the brightness of the screen of the mobile terminal 200;
the vision protection controller 61 is configured to receive the first illumination reference value and the second illumination reference value and output an illumination control signal or an illumination adjustment signal to the illumination module according to the first illumination reference value and the second illumination reference value;
the illumination module 64 includes a light emitting element 30 disposed corresponding to the light guide hole slot 112, for emitting light according to an illumination control signal, so as to match the background brightness of the back side of the mobile terminal 200 with the screen brightness of the mobile terminal 200;
the light sensing module 62 is further configured to continuously detect the ambient light brightness at the back side of the mobile terminal 200 in a preset mode after the illumination module 64 emits light and generate a first illumination reference value according to the ambient light brightness;
the communication module 63 is further configured to receive a second illumination reference value reflecting the brightness of the screen of the mobile terminal 200 transmitted by the mobile terminal 200 after the illumination module 64 emits light;
the vision protection controller 61 is further configured to receive the first illumination reference value and the second illumination reference value and determine whether to generate the illumination adjustment signal according to the first illumination reference value and the second illumination reference value;
The illumination module 64 is further configured to further adjust the brightness of the light according to the illumination adjustment signal, so that the screen brightness of the mobile terminal 200 matches the background brightness of the back side of the mobile terminal 200.
In this embodiment, the back surface of the mobile terminal 200 includes an edge region and a center region surrounded by the edge region. At least the main body portion of the vision-protecting lighting control device 100 is attached to the rear surface area of the mobile terminal 200. The mobile terminal 200 has a display screen, such as a liquid crystal display screen or an OLED display screen, and when a user holds the mobile terminal 200 to watch a video or the like, as shown in fig. 1, the bright light emitted from the display screen will illuminate the face of a person. In a dark light environment with poor illumination, the size of the pupil of the human eye is larger than that of the pupil of the human eye under the same brightness condition of the display screen but in a bright light environment, so that visual health is easily affected by visual fatigue when the display screen is watched for a long time.
The housing 10 is preferably made of plastic and is molded by injection molding, although other materials such as stainless steel may be used for the housing 10. The case 10 may be attached to the back surface of the mobile terminal 200 by a detachable manner such as a snap, an adhesive, or an adsorption, etc.; the circuit board 60 is then preferably attached to the back of the mobile terminal 200 by means of adhesive or suction or the like in a detachable manner or the like. The back of the mobile terminal 200 may refer to the back of the housing of the mobile terminal 200 itself, or may be the back of a currently popular, user-installed anti-shatter or decorative protective housing for the mobile terminal 200. For example, the housing 10 or the circuit board 60 is detachably attached to the back surface of the mobile terminal, or both components are detachably attached to the back surface of the mobile terminal. The housing 10 may be formed adjacent to the open end face by a magnetically attractable material so as to be removably attached to the metal casing of the mobile terminal.
Preferably, the vision-protecting lighting control device 100 further comprises a housing 10, wherein the housing 10 comprises a top wall 11 and a side wall 12, and the side wall 12 extends from the edge of the top wall 11 and forms a containing cavity 13 with the top wall 11; the circuit board 60 is fixedly covered at the opening of the accommodating cavity 13. This is advantageous in that the thickness of the main structure of the vision-protecting illumination control apparatus 100 is as small as possible, thereby ensuring portability of the inventive adhesive eye-protecting light-compensating apparatus 100. The light sensing hole groove 111 and the light guiding hole groove 112 are formed on the top wall 11. The photosensitive hole groove 111, the light guide hole groove, and the via hole groove 121 in the following embodiment may be either holes or grooves. Preferably, a plurality of light emitting elements 30 are provided corresponding to each light guide hole groove 112.
The circuit board 60 is used to provide both a driving circuit, a control circuit, and a carrying platform for the photosensitive element 20 and the light emitting element 30 near the ground, and a mounting surface for mounting the vision-protecting illumination control device 100. At least the photosensitive element 20 and the light emitting element 30 can be supplied with power through the mobile terminal 200 by connecting the electrical connection wire assembly, so that the light compensation control is performed by using the mobile terminal 200. In a preferred implementation, if the case 10 is configured in a flat box shape, it is advantageous to make the thickness of the light compensating body as small as possible, in order to ensure portability of the inventive adhesive eye-protecting light compensating device 100, by directly covering the opening of the case 10 with the circuit board 60, as compared to the case 10 configured in a closed shape in a direction perpendicular to the back surface of the mobile terminal 200.
The vision protection controller 61 is specifically a chip, and the electrical connection relationship and the signal transmission manner between the vision protection controller 61 and the photosensitive module 62, between the vision protection controller 61 and the communication module 63, and between the vision protection controller 61 and the lighting module 64 can be the existing manner in terms of a single link. The photosensitive module 62 includes a photosensitive element 20 and a driving circuit connected to the photosensitive element 20; the communication module 63 may be a wireless communication module 63 or a wired communication module 63, and in the embodiment of wired communication, the communication module 63 may include Type C or a wired communication interface unit common to mobile phones such as Micro USB; the lighting module 64 includes a light emitting element 30, such as an LED, and a driving circuit coupled to the light emitting element 30 that includes circuitry operable to control the on and off of the light emitting element 30 and the light emitting power.
The first illumination reference value may be an ambient light intensity value, or may be a scaled ambient light intensity level, for example, the intensity of the ambient light is divided into 10 levels. The second illumination reference value may be a backlight brightness value of the screen of the mobile terminal 200, or may be a percentage of the maximum brightness of the screen, for example, 20% brightness. The illumination control signal may instruct only the illumination module 64 to illuminate, or may instruct both the illumination module 64 to illuminate and the brightness of the adjustment screen.
Assuming that the intensity of the ambient light is classified into 10 levels from weak to strong, and the screen brightness is measured according to the percentage of the maximum brightness of the screen, when the intensity value of the ambient light reflected by the first illumination reference value is 3 and the screen brightness reflected by the second illumination reference value is 20%, the illumination control signal may instruct only the illumination module 64 to emit light with the ambient light intensity value 5 as an illumination target; in another embodiment, when the light intensity value of the ambient light reflected by the first illumination reference value is 2 and the screen brightness reflected by the second illumination reference value is 30%, the illumination control signal may instruct the illumination module 64 to emit light with the ambient light intensity value 6 as the illumination target and instruct to adjust the brightness of the display screen of the mobile terminal 200 to 25%, and the communication module 63 is further configured to send the illumination control signal to the mobile terminal 200.
Since the user may move between physical spaces with different ambient light levels, or the physical space in which the user is located and the posture of the mobile terminal 200 do not belong to a general situation, the user may rely on only the detection result of the ambient light level before the initial eye-protection lighting to perform the lighting, which may result in a state in which the eye-protection lighting effect is not ideal. By continuing to detect the ambient light level at the back side of the mobile terminal 200 after the lighting module 64 emits light for the first time and generating the first lighting reference value accordingly, and receiving the second lighting reference value reflecting the screen brightness of the current mobile terminal 200, the vision protection controller 61 is convenient for feedback adjustment control, and the eye protection lighting control device can better adapt to more complex environments and application situations and perform lighting.
In order to prevent interference with subsequent detection of the photosensitive element 20 after the illumination module 64 emits light for the first time, the vision-protecting illumination control apparatus 100 further includes a light blocking portion 14 provided between the light emitting element 30 and the photosensitive element 20. In this way, the light blocking portion 14 can block the light of the light emitting element 30 that is directed toward the photosensitive element 20.
For easy installation, the vision protection controller 61, the photosensitive module 62, the communication module 63, and the illumination module 64 are integrally mounted on the same circuit board 60.
The vision-protecting illumination control apparatus 100 of the present invention is attached to the back of a mobile terminal 200, and comprises a housing 10 and a circuit board 60, wherein a photosensitive module 62 on the circuit board 60 is used for detecting the ambient light brightness of the back side of the mobile terminal 200, and the photosensitive module 62 comprises a photosensitive element 20, and since the photosensitive element 20 is arranged corresponding to a photosensitive hole groove 111 of the housing 10, the photosensitive surface faces the back side of the mobile terminal 200 and can avoid the emitted light of the screen brightness to a large extent, the detection can accurately reflect the light intensity of the ambient light, thereby generating a first illumination reference value which is favorable for the subsequent illumination control.
The vision-protecting lighting control device 100 is further provided with a communication module 63 and is at least used for receiving a second lighting reference value reflecting the brightness of the screen from the mobile terminal 200, so that the vision-protecting controller 61 can generate such lighting control signals when the first lighting reference value needs to be illuminated: the illumination module 64 performs illumination according to the illumination control signal, so that the screen brightness of the mobile terminal 200 is matched with the background brightness of the back side of the mobile terminal 200, and thus, inappropriate illumination such as premature illumination, too strong illumination or too weak illumination is avoided.
Since the light blocking portion 14 is disposed between the photosensitive element 20 and the light emitting element 30 of the lighting module 64 in the housing 10, after the light emitting element 30 emits light, the light blocking portion 14 can block the transverse light of the light emitting element 30, so as to avoid interference caused by the light of the light emitting element 30 to the detection of the photosensitive element 20, thereby, after the lighting module 64 emits light for the first time to realize a lighting atmosphere beneficial to vision protection, the photosensitive module 62 can conveniently and accurately detect the ambient light intensity value on the back side of the mobile terminal 200 to generate a first lighting reference value, and the vision protection controller 61 can accurately perform feedback adjustment control in combination with a second lighting reference value to generate a lighting adjustment signal, and the lighting module 64 forms a more suitable lighting atmosphere according to the lighting adjustment signal, in particular, can adapt to the situation that the ambient light brightness changes, such as the user walks in environments with different lighting degrees when holding the mobile terminal 200.
In addition, since the eye-protecting illumination control apparatus is independent with respect to the mobile terminal 200 before being attached to the back surface of the mobile terminal 200, the illumination module 64 can uniformly illuminate left and right while being attached to the non-edge area of the back surface of the mobile terminal 200 in the left and right centering, thereby better illuminating the air or the adjacent objects of the set range on the back surface side of the mobile terminal 200 to form a sufficient diffuse reflection, and further forming an illumination atmosphere beneficial to guaranteeing vision health.
Further, referring to fig. 2 and 3 again, it can be understood that if only the illumination module 64 is controlled to perform the eye-protection illumination, the following situations easily occur: if the screen brightness is too high, for example, 90% of the highest screen brightness, and the illumination module 64 can change the ambient light intensity value to 7 (the intensity of the ambient light is classified into 10 levels from weak to strong) according to the actual situation, the screen brightness and the background brightness are not in an ideal coordination state according to the established evaluation standard. In order to increase the scope of application of the eye-shielding lighting control device of the present invention,
the light sensing module 62 is further configured to continue (e.g. continue one time or continue cycling for a plurality of times) detecting the ambient light brightness of the backside of the mobile terminal in a preset mode after the illumination module 64 emits light, and generate a first illumination reference value according to the detected ambient light brightness;
the communication module 63 is further configured to receive a second illumination reference value reflecting the brightness of the mobile terminal screen transmitted by the mobile terminal after the illumination module 64 emits light;
the vision protection controller 61 is further configured to receive the first illumination reference value and the second illumination reference value and output an illumination control signal or an illumination adjustment signal to the illumination module;
the illumination module 64 is further configured to further adjust the brightness of the light according to the illumination adjustment signal, so that the background brightness of the back side of the mobile terminal matches the screen brightness of the mobile terminal;
The lighting control signals include a first side control signal and a second side control signal, the first side control signal is used for indicating and adjusting the brightness of the display screen of the mobile terminal 200, and the communication module 63 is further used for sending the first side control signal to the mobile terminal 200; the illumination module 64 is configured to emit light according to the second side control signal, so that the screen brightness of the mobile terminal 200 matches the background brightness of the back side of the mobile terminal 200.
In this embodiment, the mobile terminal 200 may adjust the brightness of the display screen after receiving the first side control signal, for example, adjust the brightness of the self-luminous OLED or the backlight brightness of the liquid crystal display screen. That is, by having the illumination control signal include the first side control signal in addition to the second side control signal, the mobile terminal 200 adjusts the brightness of the screen while the illumination module 64 emits light for the supplementary illumination, so that the brightness of the screen and the brightness of the background light can reach a more ideal coordinated state, and can also reach with a lower illumination power, for example, the brightness of the screen is reduced from 90% to 20%, and the illumination module 64 only needs to increase the value of the ambient light intensity to 5.
Further, it can be understood that, when the user holds the mobile terminal 200 to enter a dark background, in order to solve the problem that the brightness of the screen is not consistent with the background brightness, after the first illumination, if the brightness of the screen is only dimmed, the problem may not be solved even if the screen is dimmed to the darkest, or the screen loses the original function due to the excessively dark brightness of the screen; if only illumination is used, under the premise of certain settings, such as high screen brightness and too wide physical space, even if illumination is controlled at the maximum intensity, the problem of inconsistent screen brightness and background brightness cannot be solved. To solve the problem to a greater extent, the application range of the eye-protecting illumination control device of the present invention is increased, and the illumination adjusting signal includes a first side adjusting signal and a second side adjusting signal, where the first side adjusting signal is used to instruct to adjust the brightness of the display screen of the mobile terminal 200; the communication module 63 is further configured to send a first side adjustment signal to the mobile terminal 200; the illumination module 64 is used for emitting light according to the second side adjustment signal so as to match the screen brightness of the mobile terminal 200 with the background brightness of the back side of the mobile terminal 200.
In this embodiment, the illumination adjustment signal is subdivided into control signals including two sides, that is, a second side adjustment signal for the illumination module 64, and also includes a second side adjustment control signal for the mobile terminal 200 to adjust the control screen, so that the adjustment range is increased, and the problem that the screen brightness is not coordinated with the background brightness is solved to a greater extent.
Further, referring to fig. 3 and fig. 5 to fig. 9, in an embodiment, the lighting module 64 includes a plurality of light emitting elements 30, and the second side adjustment signal includes the on number of the light emitting elements 30 and the corresponding driving current.
In this embodiment, by providing a plurality of light emitting elements 30, on one hand, light can be emitted from different positions, so that objects or air in a specific range can be diffusely reflected, and a favorable ambient light atmosphere is formed; on the other hand, a larger light intensity range can be achieved by controlling the number of light emitting elements 30 to be turned on. The current and thus the brightness of each light emitting element 30 is controlled, and the adjustment range of the ambient light brightness by the lighting module 64 can be controlled to a greater extent by combining the number of on light emitting elements 30.
Further, in order to better adjust the ambient light brightness at the left and right sides to achieve the uniform effect as much as possible, the light guide hole slots 112 are elongated, and the light guide hole slots 112 are provided with two light guide hole slots and are respectively positioned at the left and right sides of the light sensing hole slots 111, and the length directions of the two light guide hole slots 112 are perpendicular to the left and right directions; the light emitting elements 30 are distributed on the left and right sides of the photosensitive element 20 of the photosensitive module 62 in two rows, and each row of light emitting elements 30 is disposed corresponding to one light guiding hole 112.
In this embodiment, a light guiding hole slot 112 is respectively formed on the left and right sides, and a plurality of light emitting elements 30 are disposed in each light guiding hole slot 112, so that the brightness of the environment can be better adjusted by adaptive control.
Preferably, in order to make corresponding adjustments to the change of the ambient light level more convenient, and to make the user better accustomed to and adapt to the adjustment mechanism of the eye-protection illumination control apparatus of the present invention, the photosensitive module 62 is configured to detect the ambient light level at the back side of the mobile terminal 200 at preset time intervals after the illumination module 64 emits light, and generate the first illumination reference value according to the detected ambient light level.
Further, when the ambient light level corresponding to the first illumination reference value is lower than a first preset value and the screen brightness of the mobile terminal 200 reflected by the second illumination reference value is lower than a second preset value, the vision protection controller 61 generates an illumination control signal according to the first illumination reference value and the second illumination reference value.
In this embodiment, following the example in the previous embodiment, assuming that the intensity of the ambient light is classified into 10 levels from weak to strong, the screen brightness is measured according to the percentage of the maximum brightness of the screen, when the intensity value of the ambient light reflected by the first illumination reference value is 2 below the first preset value 5 and the screen brightness reflected by the second illumination reference value is 30% above the second preset value 20%, the vision protection controller 61 may measure the degree of the second illumination reference value deviating from the ideal screen brightness according to the first illumination reference value, or measure the degree of the first illumination reference value deviating from the ideal ambient light intensity according to the second illumination reference value, and then generate the illumination control signal by integrating the first illumination reference value and the second illumination reference value, where the illumination control signal may instruct the illumination module 64 to emit light only, for example, to emit light with the ambient light intensity value 5 as the eye-protection illumination target; it is also possible to simultaneously instruct the illumination module 64 to illuminate targeting the ambient light intensity value 5 and instruct the mobile terminal 200 to backlight at 25% or 20% of the screen brightness.
Further, referring to fig. 3 to 7, in an embodiment, the vision protection lighting control device 100 further includes an electrical connection wire assembly, one end of which is connected to the side interface of the mobile terminal 200, and the other end of which is electrically connected to the photosensitive module 62, the vision protection controller 61 and the lighting module 64, respectively;
the electrical connection cord assembly is configured to connect with a power management module of the mobile terminal 200 through a side interface of the mobile terminal 200 to transmit at least electrical power retrieved from the mobile terminal 200 and used to deliver to the photosensitive module 62, the vision protection controller 61, and the lighting module 64.
In this embodiment, the photosensitive module 62, the communication module 63, the vision protection controller 61 and the lighting module 64 can be powered from the mobile terminal 200 by setting the electrical connection wire assembly, and the vision protection controller 61 does not need a self-contained power supply device, so that the weight and the volume of the eye protection lighting control device can be reduced, and the portability of the eye protection lighting device can be ensured.
It will be appreciated that the requirements of the wired communication connection for electrical contact are higher, and in practical applications, taking the data implementation with Micro USB connector as an example, such situations easily occur: the data line is connected to the mobile terminal 200, and the data line can realize a charging function, but cannot realize data transmission. Therefore, the use is more convenient for users. Preferably, the communication module 63 communicates with the mobile terminal 200 to establish a bluetooth communication connection. The communication module 63 is used for communication connection with the mobile terminal 200, and the electric connection wire assembly is used for taking electricity from the mobile terminal 200, so that a wired connection framework for supplying power and wireless connection framework for signal transmission is formed, and the transmission of electric energy and the reliability of signal transmission are ensured. The Bluetooth communication is a mature wireless communication technology, and the corresponding spare and accessory parts are low in purchasing cost, so that the reliability of wireless communication and the production cost of the eye-protection lighting control device are guaranteed.
Further, the circuit board 60 is provided with a connector interface 66, and the electrical connection wire assembly comprises a flat cable 40, a first connector 50 and a second connector 70; one end of the flat cable 40 is connected with a first connector 50, and the first connector 50 is used for being connected with a side interface of the mobile terminal 200 in a pluggable manner; the other end of the flat cable 40 is connected to a second connector 70, and the second connector 70 is configured to be removably connected to the connector interface 66, as shown in fig. 6.
In this embodiment, the circuit board 60, the electrical connection wire assembly and the mobile terminal 200 are detachably connected in pairs, the housing 10 and the circuit board 60 as a whole can be easily detached from one mobile terminal 200 and installed on the back of another mobile terminal 200, and the circuit board 60 can be matched with connectors with different lengths and different standards to adapt to different mobile terminals 200, so that the vision protection lighting control device 100 can adapt to mobile terminals 200 with different sizes and mobile terminals 200 with different interface standards. In this way, the portable effect on the mobile terminal 200 is small, easy to attach and thus convenient for new users to accept, thereby facilitating the popularization of the vision-protecting illumination control apparatus 100.
Alternatively, the connector interface may not be provided on the circuit board 60, and at this time, the other end of the flat cable 40 may not be provided with the second connector, and the other end of the flat cable 40 may be soldered to the circuit board 60, as shown in fig. 4.
Further, a via hole groove 121 is opened at an edge of the side wall 12 away from the top wall 11 in an open structure, and the connector interface extends into the via hole groove 121. So that the user can charge the mobile terminal 200 or realize data transmission with the mobile terminal 200 using the connector adapted to the side interface of the original mobile terminal 200.
Further, referring to fig. 2 to 7 again, in an embodiment, the housing 10 and the circuit board 60 are rectangular in shape, the via hole 121 is centrally formed on the side wall 12 near the side interface of the mobile terminal 200, and the flat cable 40 is centrally led out from one side edge of the circuit board 60.
In this embodiment, since the side interfaces of the mobile terminal 200 are generally disposed in the left-right center when used for charging and/or transmitting data, when the flat cable 40 is led out from one side of the circuit board 60 in the center, the flat cable 40 can be attached to the main body including the housing 10 and the circuit board 60 by referring to the flat cable 40 itself, and the flat cable 40 can be attached to the back of the mobile terminal 200 by reducing the bending of the flat cable 40.
Further, a step-shaped recess 122 is provided at the junction of the end surface of the side wall 12 adjacent to the opening of the accommodating chamber 13 and the inner wall surface of the side wall 12, and the edge portion of the circuit board 60 is embedded in the step-shaped recess 122. In this embodiment, the edge portion of the circuit board 60 is embedded by providing the stepped recess 122 on the housing 10, so that the circuit board 60 can be better limited.
Further, the surface of the circuit board 60 facing away from the cavity 13 and the end surface of the side wall 12 adjacent to the opening of the cavity 13 are detachably attached to the back surface of the mobile terminal 200. In this embodiment, the end surface of the housing 10 adjacent to the opening of the cavity 13 is used together to attach and fix the back surface of the mobile terminal 200, for example, the adhesive for fixing is coated on the end surface of the housing 10 adjacent to the opening of the cavity 13, and meanwhile, the adhesive is coated on the surface of the circuit board 60 facing away from the cavity 13 or the back surface of the circuit board 60 is provided with a magnetic attraction member.
Further, in order to better meet the requirement of detachable attachment and fixation between the vision protection lighting control device 100 and the back surface of the mobile terminal 200, the number of detachment times of the vision protection lighting control device 100 is increased, the vision protection lighting control device 100 further includes a magnetic attraction piece (not shown), which is disposed in the cavity 13 and is fixed on the inner side surface of the circuit board 60, and the magnetic attraction piece is used for being attracted to the metal shell 10 of the mobile terminal 200 when one surface of the circuit board 60 facing away from the cavity 13 and the open end surface of the shell 10 adjacent to the cavity 13 attach to the back surface of the mobile terminal 200.
In this embodiment, compared to the manner of attaching and fixing by using the self-adhesive bonding, the manner of attaching and fixing by using the magnetic attraction piece makes the vision protection lighting control device 100 more suitable for repeatedly attaching and fixing to the back of the mobile terminal 200 and separating from the back of the mobile terminal 200, and is not limited to the number of times of detachment/attachment.
Further, referring to fig. 2 to 3, 7 and 9, in an embodiment, the top surfaces of the photosensitive element 20 and the light emitting element 30 are lower than the surface of the top wall 11 facing away from the opening of the cavity 13, such as D1 in fig. 9 is greater than zero; the case 10 is provided with a light blocking portion 14 between the photosensitive elements 20 and the light emitting elements 30. In this embodiment, since the light sensing element 20 is preferably further used to detect the ambient light on the back side of the mobile terminal 200 after the light emitting element 30 performs initial light filling to provide a feedback signal for further adjusting the brightness of the light emitting element 30, the light guiding portion of the housing 10 between the light sensing element 20 and the light guiding element can avoid interference of the light emitting element 30 on the detection of the light sensing element 20.
Further, referring to fig. 9 and 10, in an embodiment, the light blocking portion 14 is adhered to the inner side surface of the circuit board 60 by using light shielding glue. By providing the light shielding glue to connect the light shielding portion 14 and the circuit board 60, light leakage due to assembly gaps or looseness can be avoided. Shading glues are typically prepared by adding dark shading colorants to a conventional glue, such as a black glue that is prepared.
Further, referring to fig. 9 and 10, in one embodiment, the light blocking portion 14 includes a first annular wall 15, the first annular wall 15 is connected to the edge of the photosensitive hole groove 111, and the first annular wall 15 is formed by extending from the inner wall surface of the accommodating cavity 13 in a direction approaching the circuit board 60; the inner wall surface of the entrance outside the first annular wall 15 is gradually expanded from inside to outside, the inner end of the first annular wall 15 is lower than the top surface of the photosensitive element 20, and the inner end of the first annular wall 15 is adhered to the circuit board 60 through shading glue.
In this embodiment, the inner wall surface at the inlet of the outer side of the first annular wall 15 is gradually expanded from inside to outside, so as to facilitate the introduction of ambient light into the photosensitive element 20; the inner end of the first annular wall 15 is lower than the top surface of the photosensitive element 20, which is advantageous for the photosensitive element 20 to receive as much ambient light as possible. In addition, since the first annular wall 15 is closest to the photosensitive element 20, the light shielding by the first annular wall 15 can realize the light-weight design of the housing 10 on one hand, and on the other hand, the use amount of the light shielding glue can be reduced to a certain extent because the circumference of the inner end of the first annular wall 15 is relatively small.
Further, the housing 10 further includes a second annular wall 16 disposed on the inner side of the top wall 11, the second annular wall 16 is connected to the edge of the light guiding slot 112, and the second annular wall 16 extends from the inner side of the top wall 11 to a direction approaching the back of the circuit board 60. The inner wall surface of the entrance outside the second annular wall 16 is gradually expanded from inside to outside, the inner end of the second annular wall 16 is lower than the top surface of the light emitting element 30, and the light blocking part 14 is formed at the positions of the first annular wall 15 and the second annular wall 16 between the light sensing element 20 and the light emitting element 30.
In this embodiment, corresponding to the first annular wall 15, the inner wall surface at the inlet outside the second annular wall 16 is gradually expanded from inside to outside, so that the light emitted by the light emitting element 30 is conveniently led out to the environment, and meanwhile, the light of the light emitting element 30 is not excessively diffused; the inner end of the second annular wall 16 is lower than the top surface of the light emitting element 30 so that the light emitted from the light emitting element 30 may be emitted through the light guide hole groove 112. In addition, the first annular wall 15 and the second annular wall 16 are multiplexed to form the light blocking portion 14, so that on one hand, the structure of the housing 10 is simplified, and on the other hand, a double-layer light blocking structure is formed, so that the light blocking effect is improved.
Further, please refer to fig. 2-3, fig. 5, fig. 7 and fig. 9 again, in one ofIn the embodiment, the inner wall surfaces of the first annular wall 15 and the second annular wall 16 at the outer inlet are formed by inclined surfaces and/or tapered surfaces, and the inclination angle of the inner wall surface of the first annular wall 15 at the outer inlet is larger than that of the inner wall surface of the second annular wall 16 at the outer inlet, as shown in FIG. 9Is greater than->+.>Greater than +.>In the embodiment, the inner wall surface with the gradually expanding shape from the inner side to the outer side is formed by the inclined surface and/or the conical surface, so that the corresponding structure can be simplified and the production and the manufacturing are convenient; by the differentiated design, on one hand, the entrance oblique angle of the first annular wall 15 is larger than that of the second annular wall 16, and on the other hand, light beams emitted by any two adjacent light guide hole grooves 112 can be prevented from crossing at too close distance, so that the detection of the brightness of the environment is affected; on the other hand, by relatively enlarging the entrance of the first annular wall 15, a sufficient amount of ambient light is introduced, thereby improving the detection sensitivity of the photosensitive element 20. Preferably, the inclination angle of the inner wall surface at the inlet outside the first annular wall 15 is 60 degrees, and the inclination angle of the inner wall surface at the inlet outside the first annular wall 15 is 30 degrees, i.e., +.>Equal to +. >All 60 degrees; in FIG. 9 +.>Equal to 30 degrees. Preferably, a gap is formed between the inner wall surface of the inner end of the second annular wall 16 and the light emitting element 30 so that the light emitting element 30 can be easily incorporated. In order to better fix the light emitting element 30 and prevent oxidation of the light emitting element 30 due to high temperature, the second annular wall 16 is filled with a transparent adhesive (not shown) that is condensed to wrap the light emitting element 30.
Further, referring to fig. 9 and 10, in an embodiment, the first annular wall 15 includes an inclined section 151 at the outer inlet, and a straight section 152 connected to the inner end of the inclined section 151, and an inner wall surface at the outer inlet of the first annular wall 15 is formed on the inclined section 151, and the straight section 152 is used for limiting the encapsulation base of the photosensitive element 20.
In this embodiment, the transverse inclined surface of the first annular wall 15 is set to be in a shape with two sections connected, so that enough light is introduced, and meanwhile, the installation space of the photosensitive element 20 is prevented from being occupied, so that the limit of the encapsulation base of the photosensitive element 20 is realized, and the light blocking isolation effect of the light blocking part 14 is enhanced. Preferably, referring to fig. 9 and 10, in an embodiment, the intersection line of the extending surface of the inner wall surface of the inclined section 151 and the extending surface of the inner wall surface of the straight section 152 is higher than or close to the top surface of the photosensitive element 20.
Further, referring to fig. 2, 3, 5, 7 and 9 again, in one embodiment, a gap is formed between the inner wall surface of the inner end of the second annular wall 16 and the light emitting element 30 so as to facilitate the installation of the light emitting element 30. In order to better fix the light emitting element 30 and prevent oxidation of the light emitting element 30 due to high temperature, the second annular wall 16 is filled with a transparent adhesive (not shown) that is condensed to wrap the light emitting element 30.
Further, referring to fig. 9 and 10, in an embodiment, a fixing glue is filled between an inner surface of the circuit board 60 and an inner surface of the cavity 13. In this embodiment, the circuit board 60 and the housing 10 are fixedly connected by the fixing glue, which is a simpler way of increasing the connection strength between the housing 10 and the circuit board 60 than the way of using a buckle or the like to realize the fixed connection. The glue is fixedly connected with the circuit board 60 and the housing 10, so that the circuit board and the housing are not easy to separate from each other, on one hand, the durability is increased, and on the other hand, the vision protection lighting control device 100 is more suitable for being repeatedly attached to and fixed from the back of the mobile terminal 200 and separated from the back of the mobile terminal 200.
Further, referring to fig. 6, in an embodiment, a dispensing hole 65 communicating with the cavity 13 is provided on the circuit board 60, and the dispensing hole 65 is used for filling and fixing glue between an inner side surface of the circuit board 60 and an inner wall surface of the cavity 13. In this embodiment, the glue dispensing hole 65 is provided to facilitate filling and fixing glue between the inner side surface of the circuit board 60 and the inner wall surface of the cavity 13 after the circuit board 60 is covered on the opening of the housing 10, i.e. after the preset positional relationship between the circuit board 60 and the housing 10 is ensured.
Those skilled in the art will appreciate that the above-described preferred embodiments can be freely combined and stacked without conflict.
It will be understood that the above-described embodiments are merely illustrative and not restrictive, and that all obvious or equivalent modifications and substitutions to the details given above may be made by those skilled in the art without departing from the underlying principles of the invention, are intended to be included within the scope of the appended claims.
Claims (8)
1. A vision-protecting lighting control device for attachment to a non-edge line area of a back surface of a mobile terminal and independent of the mobile terminal prior to attachment to the back surface of the mobile terminal, characterized in that,
the vision protection lighting control device comprises a shell (10) and a circuit board (60), wherein a photosensitive hole groove (111), a light guide hole groove (112) arranged at the periphery of the photosensitive hole groove (111) and a light blocking part (14) positioned between the photosensitive hole groove (111) and the light guide hole groove (112) are arranged on the shell (10);
the circuit board (60) is arranged in the shell (10) and is provided with a vision protection controller (61), and a photosensitive module (62), a communication module (63) and a lighting module (64) which are electrically connected with the vision protection controller (61);
The photosensitive module (62) comprises a photosensitive element (20) arranged corresponding to the photosensitive hole groove (111), a photosensitive surface of the photosensitive element (20) faces the back side of the mobile terminal, and the photosensitive module (62) is used for detecting the ambient light brightness of the back side of the mobile terminal and generating a first illumination reference value according to the ambient light brightness;
the communication module (63) is used for being in communication connection with the mobile terminal and at least used for receiving a second illumination reference value which reflects the screen brightness of the mobile terminal and is transmitted by the mobile terminal;
the vision protection controller (61) is used for receiving the first illumination reference value and the second illumination reference value and outputting an illumination control signal or an illumination adjustment signal to the illumination module according to the first illumination reference value and the second illumination reference value;
the lighting module (64) comprises a light emitting element (30) arranged corresponding to the light guide hole groove (112) and used for emitting light according to the lighting control signal or adjusting the brightness of the emitted light according to the lighting adjusting signal so as to enable the background brightness of the back side of the mobile terminal to be matched with the screen brightness of the mobile terminal;
the photosensitive module (62) is further used for continuously detecting the ambient light brightness at the back side of the mobile terminal in a preset mode after the illumination module (64) emits light and generating a first illumination reference value according to the ambient light brightness;
The communication module (63) is further configured to receive a second illumination reference value reflecting the screen brightness of the mobile terminal, which is transmitted by the mobile terminal after the illumination module (64) emits light;
the vision protection controller (61) is further configured to receive the first illumination reference value and the second illumination reference value and output an illumination control signal or an illumination adjustment signal to the illumination module;
the illumination module (64) is further used for further adjusting the brightness of the light according to the illumination adjusting signal so as to enable the background brightness of the back side of the mobile terminal to be matched with the screen brightness of the mobile terminal;
the illumination control signals comprise a first side control signal and a second side control signal, the first side control signal is used for indicating and adjusting the brightness of the display screen of the mobile terminal, and the communication module (63) is also used for sending the first side control signal to the mobile terminal; the illumination module (64) is used for emitting light according to the second side control signal so as to enable the screen brightness of the mobile terminal to be matched with the background brightness of the back side of the mobile terminal.
2. The vision protection lighting control device of claim 1, wherein the lighting adjustment signal comprises a first side adjustment signal and a second side adjustment signal, the first side adjustment signal being used to indicate adjustment of the brightness of the mobile terminal display screen;
The communication module (63) is further configured to send a first side adjustment signal to the mobile terminal; the illumination module (64) is used for emitting light according to the second side adjusting signal so as to enable the screen brightness of the mobile terminal to be matched with the background brightness of the back side of the mobile terminal.
3. The vision-protecting lighting control device of claim 2, wherein the lighting module (64) comprises a plurality of light-emitting elements (30), and the second side adjustment signal comprises an on-number of the light-emitting elements (30) and a corresponding drive current magnitude.
4. A vision-protecting illumination control apparatus according to claim 3, wherein the light-guiding hole grooves (112) are elongated, two light-guiding hole grooves (112) are provided and are respectively located on the left and right sides of the photosensitive hole groove (111), and the length directions of the two light-guiding hole grooves (112) are perpendicular to the left and right directions; the light emitting elements (30) are distributed on the left side and the right side of the light sensing elements (20) of the light sensing module (62) in two rows, and each row of light emitting elements (30) is arranged corresponding to one light guide hole groove (112).
5. The vision-protecting illumination control apparatus according to claim 1, wherein the light sensing module (62) is configured to detect the ambient light level at the back side of the mobile terminal at preset time intervals after the illumination module (64) emits light and generate the first illumination reference value based thereon.
6. The vision-protecting illumination control apparatus according to claim 1, wherein the vision-protecting controller (61) generates the illumination control signal according to the first illumination reference value and the second illumination reference value when the ambient light intensity corresponding to the first illumination reference value is lower than a first preset value and the mobile terminal screen brightness reflected by the second illumination reference value is higher than a second preset value.
7. The vision-protecting lighting control device of any one of claims 1-6,
the vision protection lighting control device further comprises an electric connecting wire assembly, one end of the electric connecting wire assembly is connected with the side surface interface of the mobile terminal, and the other end of the electric connecting wire assembly is electrically connected with the photosensitive module (62), the communication module (63), the vision protection controller (61) and the lighting module (64) respectively;
the electrical connection line assembly is used for being connected with a power management module of the mobile terminal through a side interface of the mobile terminal so as to at least transmit the electrical energy which is obtained from the mobile terminal and is transmitted to the photosensitive module (62), the vision protection controller (61) and the lighting module (64).
8. The vision-protecting lighting control device of claim 7, wherein the communication module (63) establishes a bluetooth communication connection with the mobile terminal.
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| TWI436338B (en) * | 2011-01-14 | 2014-05-01 | Univ Nat Taiwan Science Tech | Background light compensation system and method for display apparatus |
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