CN110428794A - Method, device and system for adjusting blue light of screen - Google Patents

Abstract

The invention discloses a method, a device and a system for adjusting blue light of a screen, wherein the method for adjusting the blue light of the screen comprises the following steps: acquiring the working state of a screen, and judging whether the screen is in a display state or not; when the screen is judged to be in the display state, acquiring the current time; judging whether the current time is within a preset daytime time period; when the current time is judged not to be in the preset daytime time period, adjusting the input value of blue light in the screen, and filtering the blue light output by the screen; when the current time is judged to be within a preset daytime time period, detecting the light intensity of the current environment; judging whether the light intensity of the current environment is smaller than a preset environment light threshold value or not; and when the light intensity of the current environment is judged to be smaller than the preset environment light threshold value, adjusting the input value of the blue light in the screen, and filtering the blue light output by the screen. The invention can ensure powerful filtering degree under the condition of insufficient natural light and reduce the high-energy blue light hazard of the screen as much as possible.

Description

A method, device and system for adjusting screen blue light

technical field

The invention relates to the technical field of screen display, in particular to a method, device and system for adjusting blue light on a screen.

Background technique

Blue light is a relatively high-energy light with a wavelength between 380nm and 480nm. Blue light has short wavelength and high energy. It can directly penetrate the crystal and reach the retina of the fundus, causing free radicals in the retina. Free radicals can lead to the decline of retinal pigment epithelial cells, and then make the photosensitive cells lack nutrients, resulting in vision loss, macular degeneration, and extrusion. Shrinking the lens can easily cause myopia or other eye diseases of varying degrees. In addition, blue light affects people's sleep quality and induces rhythm disorders.

With the popularization of electronic products, it is more and more common for children to use electronic products, and most electronic product screens have blue light. The high-energy blue light in the LED light emitted by the screens of various electronic products is harmful to children's eyes Very big damage.

At present, electronic products such as learning tablets mainly use a polymer blue light film material in filtering blue light, which can absorb blue light energy and convert it into other energy to achieve the filtering effect, but the ability of this method to absorb blue light is limited after all, and cannot be based on actual The situation is adjusted intelligently. Sunlight and LED light are not the same light-emitting system, and the harm of blue light in different light environments is not the same. The high-energy blue light hazards of LEDs are particularly prominent in light environments (with insufficient sunlight) or at night (without sunlight), and current products have not improved for such situations.

Contents of the invention

The present invention provides a method, device and system for adjusting the blue light of the screen to solve the technical problem in the prior art that the high-energy blue light emitted by the screen cannot be intelligently and automatically filtered according to the actual situation. Specifically, the technical scheme of the present invention is as follows:

In the first aspect, the present invention discloses a method for adjusting screen blue light, including:

Acquiring the working state of the screen, and judging whether the screen is in a display state;

When it is determined that the screen is in a display state, acquiring the current time;

judging whether the current time is within a preset daytime time period;

When it is determined that the current time is not in the preset daytime period, adjusting the input value of blue light in the screen to filter the blue light output by the screen;

When it is determined that the current time is within the preset daytime time period, detecting the light intensity of the current environment;

judging whether the light intensity of the current environment is less than a preset ambient light threshold;

When it is determined that the light intensity of the current environment is less than the preset ambient light threshold, the input value of blue light in the screen is adjusted to filter the blue light output by the screen.

Preferably, the method for adjusting the blue light of the screen further includes: setting a protective film with a blue light adjusting function on the screen.

Preferably, before or after adjusting the input value of blue light in the screen and filtering the blue light output by the screen, the method further includes:

Detecting the intensity of blue light in the LED light emitted by the screen;

judging whether the blue light intensity is greater than a preset blue light intensity threshold;

When it is determined that the blue light intensity is greater than the preset blue light intensity threshold, the input value of blue light in the screen is adjusted.

Preferably, before adjusting the input value of blue light in the screen and filtering the blue light output by the screen, it also includes:

taking an image of the user's eye directly in front of the screen;

Analyzing and comparing the user's eye image with the pre-stored reference eye image of the user, and judging whether the user's pupil changes exceed a preset amplitude change value;

When it is determined that the pupil change of the user exceeds a preset amplitude change value, the input value of blue light in the screen is adjusted.

Preferably, adjusting the input value of blue light in the screen specifically includes:

adjust the brightness of said screen; and/or

Adjusts the color temperature of the screen.

In the second aspect, the present invention also discloses a device for adjusting the blue light of the screen, including:

A screen status acquiring module, configured to acquire the working status of the screen, and determine whether the screen is in a display status;

A time acquisition module, configured to acquire the current time when it is determined that the screen is in a display state;

A time judging module, configured to judge whether the current time is within a preset daytime time period;

The blue light adjustment module is configured to adjust the input value of blue light in the screen and filter the blue light output by the screen when it is determined that the current time is not in the preset daytime period.

A light intensity detection module, configured to detect the light intensity of the current environment when it is determined that the current time is within a preset daytime period;

A light intensity comparison module, configured to determine whether the light intensity of the current environment is less than a preset ambient light threshold;

The blue light adjustment module is further configured to adjust the input value of blue light in the screen and filter the blue light output by the screen when it is determined that the light intensity of the current environment is less than a preset ambient light threshold.

Preferably, the blue light automatic adjustment device also includes:

A blue light detection module, configured to detect the intensity of blue light in the LED light emitted by the screen;

A blue light judging module, used to judge whether the blue light intensity is greater than a preset blue light intensity threshold;

The blue light adjustment module is further configured to adjust the input value of blue light in the screen and filter the blue light output by the screen when it is determined that the blue light intensity is greater than a preset blue light intensity threshold.

Preferably, the blue light automatic adjustment device also includes:

A photographing module, configured to photograph the user's eye image directly in front of the screen;

The image analysis module is used to analyze and compare the user's eye image with the pre-stored reference eye image of the user, and determine whether the user's pupil changes exceed a preset amplitude change value;

The blue light adjustment module is further configured to adjust the input value of blue light in the screen when it is determined that the pupil change of the user exceeds a preset amplitude change value.

Preferably, the blue light adjustment module includes:

a brightness adjustment sub-module, configured to adjust the brightness of the screen; and/or

The color temperature adjustment sub-module is used to adjust the color temperature of the screen.

In a third aspect, the present invention also discloses a system for adjusting blue light on a screen, including the device for adjusting blue light on a screen according to the present invention, and a protective film for covering the front of the screen, and the protective film has a blue light adjusting function.

The present invention includes at least one of the following technical effects:

(1) The present invention judges whether the current time is in the preset daytime time period when the screen is in the display state, and starts the automatic filtering function when it is not in the preset daytime time period, adjusts the input value of blue light in the screen, and filters The blue light output by the screen; even if the current time is in the preset daytime period, the light intensity of the current environment will be further detected, and the input value of blue light in the screen will also be adjusted (reduced) when the light intensity is insufficient, thereby filtering the screen Blu-ray output. In this way, according to the actual situation, it is highly intelligent to select the automatic filter mode in dim nights and days with insufficient light. By reducing the input value of blue light in the screen, it reduces the impact of high-energy blue light on human eyes in low light conditions. s damage.

(2) In the present invention, a protective film with a blue light adjustment function is also provided on the screen, through which a part of blue light is preliminarily filtered, and then it is determined whether it is necessary to further adjust the blue light input amount of the screen according to the actual situation. In this way, on the one hand, an appropriate degree of filtering and clear visual enjoyment can be ensured in the case of sufficient natural light; on the other hand, a strong degree of filtering can be ensured in the case of insufficient natural light, and the high-energy blue light of LEDs can be reduced as much as possible harm.

(3) When the present invention detects that the current ambient light intensity is not enough, or is currently in the preset night time period, it will first detect the blue light intensity in the LED light emitted by the screen through the protective film, and only when it detects that the current When the blue light intensity of the LED light emitted by the screen through the protective film is still greater than the preset blue light intensity value, the blue light input of the screen will be adjusted to filter the blue light, thereby reducing the damage of high-energy blue light to human eyes.

(4) Due to individual differences, each person has a different sensitivity to blue light. The present invention will also compare the image of the user's eye pupil with the user's reference pupil image, and determine that the user's pupil has changed beyond the preset amplitude value. , it means that the user is more sensitive to blue light at this time, so it is necessary to adjust the input value of blue light on the screen, thereby reducing the blue light output from the screen from the source.

(5) In the present invention, adjusting the input value of the screen blue light includes adjusting the brightness of the screen, or adjusting the color temperature of the screen. Specifically, automatically adjust the color temperature of the screen to give users a comfortable visual experience, moderately filter blue light, and relieve visual fatigue.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is a flowchart of an embodiment of the method for adjusting screen blue light in the present invention;

Fig. 2 is a flowchart of another embodiment of the method for adjusting screen blue light according to the present invention;

Fig. 3 is a flowchart of another embodiment of the method for adjusting screen blue light according to the present invention;

Fig. 4 is a flowchart of another embodiment of the method for adjusting screen blue light according to the present invention;

Fig. 5 is a block diagram of an embodiment of a device for adjusting screen blue light according to the present invention;

Fig. 6 is a block diagram of another embodiment of the device for adjusting screen blue light according to the present invention;

Fig. 7 is a block diagram of another embodiment of the device for adjusting screen blue light according to the present invention;

Fig. 8 is a block diagram of another embodiment of the device for adjusting the blue light of the screen according to the present invention.

Reference signs:

10--screen status acquisition module; 20--time acquisition module; 30--time judgment module; 40--blue light adjustment module; 50--light intensity detection module; 60--light intensity comparison module; 70--blue light detection Module; 80--blue light judgment module; 90-shooting module; 100-image analysis module; 41-brightness adjustment sub-module; 42-color temperature adjustment sub-module.

Detailed ways

In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and/or components, but does not exclude one or more other Presence or addition of characteristics, wholes, steps, operations, elements, components and/or collections.

In order to make the drawing concise, each drawing only schematically shows the parts related to the present invention, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically drawn, or only one of them is marked. Herein, "a" not only means "only one", but also means "more than one".

It should also be further understood that the term "and/or" used in the description of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations .

In a specific implementation, the terminal devices described in the embodiments of the present application include but are not limited to devices such as mobile phones, laptop computers, tutoring computers or tablet computers with touch-sensitive surfaces (for example, touch screen displays and/or touchpads). other portable equipment. It should also be understood that, in some embodiments, the terminal device is not a portable communication device, but a desktop computer with a touch-sensitive surface (eg, a touch-screen display and/or a touchpad).

In the ensuing discussion, a terminal device comprising a display and a touch-sensitive surface is described. However, it should be understood that a terminal device may include one or more other physical user interface devices such as a physical keyboard, mouse and/or joystick.

The terminal device supports various applications such as one or more of the following: drawing application, presentation application, web creation application, word processing application, disc burning application, spreadsheet application, gaming application, telephone applications, video conferencing applications, email applications, instant messaging applications, exercise support applications, photo management applications, digital camera applications, digital video camera applications, web browsing applications, digital music player applications and/or digital video player applications.

Various applications that can be executed on the terminal device can use at least one common physical user interface device, such as a touch-sensitive surface. One or more functions of the touch-sensitive surface and corresponding information displayed on the terminal may be adjusted and/or changed between applications and/or within the respective applications. In this way, the common physical architecture (eg, touch-sensitive surface) of the terminal can support various applications with a user interface that is intuitive and transparent to the user.

In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.

The invention discloses a method for adjusting screen blue light, comprising:

S101, acquiring the working state of the screen, and judging whether the screen is in a display state;

S102, when it is determined that the screen is in the display state, acquire the current time;

S103, judging whether the current time is within the preset daytime time period; if so, proceed to step S104; otherwise, proceed to step S106;

S104, detecting the light intensity of the current environment;

S105, judging whether the light intensity of the current environment is less than a preset ambient light threshold; when it is determined that the light intensity of the current environment is less than the preset ambient light threshold, enter step S106;

S106. Adjust the input value of blue light in the screen, and filter the blue light output by the screen.

Specifically, in this embodiment, first obtain the working state of the lower screen to see whether the screen is currently in the display state, because only when the screen is in the display state, will the LED light containing blue light be emitted, so it is not only at this time to judge The device is currently in use, because the screen is not necessarily in the display state when the device is in use/working state. If the screen is not in the display state, then there is no need to perform blue light filtering on the screen. Therefore, it is necessary to go further and determine that the screen is currently in the display state. When the screen is in the display state, then obtain the current time and make a judgment on which time period the current time belongs to. Since the natural light in the daytime and night environment is obviously different, you can roughly set a daytime time period and night time. period, and then determine which time period the current time is in. For the daytime period, if there is sufficient natural light, the proportion of blue light may be reduced, thereby reducing the harm of blue light to human eyes. And for the night time period, or even in the daytime time period but the current ambient light intensity is lower than the preset ambient light threshold (insufficient natural light), you need to start the automatic blue light filtering mode, specifically, you need to adjust the blue light input of the screen Value, by reducing the proportion of blue light input to the screen, that is, reducing the B (blue light) component in the input RGB spectrum, thereby controlling the output of blue light on the screen from the source, and playing the role of filtering blue light on the screen.

In this embodiment, when the screen is in the display state, it is judged whether the current time is in the preset daytime time period, and when it is not in the preset daytime time period, the automatic filtering function is started, the input value of blue light in the screen is adjusted, and the screen output is filtered Even if the current time is in the preset daytime period, it will further detect the light intensity of the current environment. In the case of insufficient light intensity, it will also adjust (reduce) the input value of blue light in the screen, and then filter the output of the screen. blu ray. In this way, according to the actual situation, it is highly intelligent to select the automatic filter mode in dim nights and days with insufficient light. By reducing the input value of blue light in the screen, it reduces the impact of high-energy blue light on human eyes in low light conditions. s damage.

Preferably, in the above embodiment, the ranges of the preset day time period and night time period can be manually set in advance, or can be obtained automatically. For example, we can preset the day time period and night time period in advance, for example: set 5:00 in the morning---7:30 in the afternoon as the day time period, and the rest of the time as the night time period. Preferably, due to different seasons, there will be a large difference in the time of daylight or darkness. Therefore, corresponding settings can also be made according to changes in seasons, that is to say, in different seasons, the set day time period and Night times will also vary.

For automatic acquisition, you need to first obtain the current latitude and longitude of the device where the screen is located. We can manually input the latitude and longitude, or use GPS to locate the latitude and longitude, and then determine the daily sunrise and sunset time according to the latitude and longitude, and then further Determine daytime and nighttime periods for each day. Since the sunrise and sunset times will vary every day, this setting method is more accurate. Specifically, steps are also included before obtaining the working status of the screen above:

Obtain the latitude and longitude where the screen is currently located;

Obtain the sunrise and sunset times according to the latitude and longitude where the screen is currently located;

Set the period after sunrise and before sunset as the daytime period of the day;

Set the time period after sunset and before sunrise as the night time period of the day.

In another embodiment of the method of the present invention, on the basis of the above embodiments, a protective film with blue light adjustment function is provided on the screen. Specifically, the protective film with the function of adjusting blue light includes at least one anti-blue light film layer or an anti-blue light coating.

The present invention is based on a protective film with a blue light adjustment function similar to an electronic product with a screen such as a learning tablet. mode, on the basis of the original blue light film, add an intelligent filter mode that automatically filters blue light (using the method of adjusting the screen blue light in the above embodiment), this intelligent filter mode can detect ambient light through the light sensor, and open the software according to the ambient light The filtering method, on the one hand, can ensure a suitable degree of filtering and clear visual enjoyment in the case of sufficient natural light, and on the other hand, can ensure a strong degree of filtering in the case of insufficient natural light, reducing the high-energy blue light of LEDs as much as possible harm.

Another embodiment of the inventive method, as shown in Figure 2, comprises:

S201, acquiring the working state of the screen, and judging whether the screen is in a display state;

S202, when it is determined that the screen is in the display state, acquire the current time;

S203, judging whether the current time is within a preset daytime time period; if so, proceed to step S204; otherwise, proceed to step S206;

S204, detecting the light intensity of the current environment;

S205, judging whether the light intensity of the current environment is less than a preset ambient light threshold; when it is determined that the light intensity of the current environment is less than the preset ambient light threshold, enter step S206;

S206, detecting the blue light intensity in the LED light emitted by the screen;

S207, judging whether the blue light intensity is greater than a preset blue light intensity threshold;

S208. When it is determined that the blue light intensity is greater than the preset blue light intensity threshold, adjust the input value of the blue light in the screen, and filter the blue light output by the screen.

In this embodiment, on the basis of any of the above-mentioned embodiments, before adjusting the blue light input value of the screen, the current blue light intensity will be detected, and only when the current blue light intensity is greater than the preset blue light intensity threshold, will it be reduced. The input value of the blue light in the screen, to filter the blue light of the screen.

In another embodiment of the method of the present invention, after adjusting the blue light input value of the screen, the blue light intensity output by the screen is detected, and if the detected blue light intensity is greater than the preset blue light intensity threshold, return and continue to adjust the blue light input value of the screen until detection The received blue light intensity is less than or equal to the preset blue light intensity threshold. Specifically, the method of this embodiment is shown in Figure 3, including:

S301, acquiring the working state of the screen, and judging whether the screen is in a display state;

S302. Acquiring the current time when it is determined that the screen is in the display state;

S303, judging whether the current time is within the preset daytime time period; if so, proceed to step S304; otherwise, proceed to step S306;

S304, detecting the light intensity of the current environment;

S305, judging whether the light intensity of the current environment is less than a preset ambient light threshold; when it is determined that the light intensity of the current environment is less than the preset ambient light threshold, enter step S306;

S306. Adjust the input value of blue light in the screen, and filter the blue light output by the screen;

S307, detecting the blue light intensity in the LED light emitted by the screen;

S308, judging whether the blue light intensity is greater than the preset blue light intensity threshold; when it is determined that the blue light intensity is greater than the preset blue light intensity threshold, return to step S306 and continue to adjust the blue light input value in the screen until it is detected that the screen passes through the The blue light intensity in the LED light emitted by the protective film is less than the preset blue light intensity threshold.

In this embodiment, the intelligent filtering mode is used to filter blue light-adjusting the input value of blue light in the screen, after filtering the blue light output by the screen, and then detecting the intensity of blue light in the LED light emitted by the screen, if it is judged that the detected If the blue light intensity is greater than the preset blue light intensity threshold, then the input value of blue light in the screen will be adjusted again to reduce the proportion of blue light input to the screen until the blue light intensity in the LED light emitted by the screen is detected to be less than the preset blue light intensity Intensity Threshold.

Another embodiment of the inventive method, as shown in Figure 4, includes:

S401, acquiring the working state of the screen, and judging whether the screen is in a display state;

S402. Acquire the current time when it is determined that the screen is in the display state;

S403, judging whether the current time is within the preset daytime time period; if so, proceed to step S404; otherwise, proceed to step S406;

S404, detecting the light intensity of the current environment;

S405, judging whether the light intensity of the current environment is less than a preset ambient light threshold; when it is determined that the light intensity of the current environment is less than the preset ambient light threshold, enter step S406;

S406, taking an eye image of the user directly in front of the screen;

S407, analyzing and comparing the user's eye image with the pre-stored reference eye image of the user, and judging whether the user's pupil change exceeds a preset amplitude change value;

S408, when it is determined that the pupil change of the user exceeds the preset amplitude change value, adjust the input value of the blue light in the screen.

The pupil of the human eye is more sensitive to blue light received. Specifically, increasing the level of blue light transmitted to the glasses will cause the pupil to constrict. When the pupil constricts, the iris image captured by the glasses is more likely to be of higher quality because the iris area is larger And more biometric features of the iris are apparent. For a given capture resolution, an image of the iris taken when the iris is dilated and the pupil constricted will have a higher resolution than an image taken when the iris is constricted (and the pupil dilated), because the dilated iris provides more Large iris area. Due to the sensitivity of the human eye pupil to blue light, it can be analyzed according to the captured user's glasses image and the preset reference glasses image to see how much the user's pupil has shrunk compared to normal conditions, and the shrinkage exceeds a certain amount. threshold, it is considered that the amount of blue light exceeds the safe range of the user's blue light. At this time, certain filtering measures need to be adopted to further filter the blue light on the screen. Of course, the contraction range can also be reflected by iris resolution.

Preferably, in any of the above-mentioned embodiments, adjusting the input value of blue light in the screen specifically includes:

adjusting the brightness of the screen; and/or adjusting the color temperature of the screen.

The color temperature is expressed by the absolute temperature K, which is to heat a standard black body (such as platinum), and when the temperature rises to a certain level, the color starts to change from red, orange, yellow, green, blue, indigo (blue-violet), purple, and gradually Change, using the characteristics of this light color change, when the light color of the light source is the same as that of the black body, we call the temperature of the black body at that time the color temperature of the light source. When the color temperature is around 3000K, the light color is yellowish. When the color temperature is above 5000K, the light color is bluish. Color temperature is a ruler to test the ratio of red-blue light in the light. More blue light means higher color temperature, and more red light means lower color temperature.

Simply put, color temperature is the most common indicator of the spectral quality of a light source. "Warm light" has a lower color temperature, while "cool light" has a relatively higher color temperature. After the color temperature increases, the proportion of blue radiation increases, and the blue light increases accordingly. At the same time, the brightness also affects the proportion of blue light. The higher the brightness, the stronger the blue light radiation, and the lower the brightness, the lower the blue light output. Therefore, the blue light input of the screen can be controlled by adjusting the color temperature or brightness. For example, lowering the color temperature or reducing the brightness can reduce the blue light input, thereby filtering the blue light of the screen.

Based on the same technical idea, the present invention also discloses a device for adjusting the blue light of the screen, which can filter the blue light of the screen by using the method for adjusting the blue light of the screen in the above embodiment. Specifically, the embodiment of the device for adjusting the blue light of the screen in this embodiment is shown in Figure 5, including:

A screen state acquiring module 10, configured to acquire the working state of the screen, and judge whether the screen is in a display state;

A time acquisition module 20, configured to acquire the current time when it is determined that the screen is in a display state;

A time judging module 30, configured to judge whether the current time is within a preset daytime time period;

The blue light adjustment module 40 is configured to adjust the input value of blue light in the screen and filter the blue light output by the screen when it is determined that the current time is not in the preset daytime period.

The light intensity detection module 50 is used to detect the light intensity of the current environment when it is determined that the current time is within the preset daytime time period;

A light intensity comparison module 60, configured to determine whether the light intensity of the current environment is less than a preset ambient light threshold;

The blue light adjustment module 40 is further configured to adjust the input value of blue light in the screen and filter the blue light output by the screen when it is determined that the light intensity of the current environment is less than a preset ambient light threshold.

In this embodiment, the screen status acquisition module 10 acquires the screen working status of the device. If the acquired screen is in the display state, the time acquisition module 20 then acquires the current time, and further determines whether the current time is in the preset daytime time part. Specifically, the day time period and the night time period can be preset in advance, for example: 5:00 in the morning---7:30 in the afternoon is set as the day time period, and the rest of the time is set as the night time period. Preferably, due to different seasons, there will be a large difference in the time of daylight or darkness. Therefore, corresponding settings can also be made according to changes in seasons, that is to say, in different seasons, the set day time period and Night times will also vary.

In addition, more intelligently, you can first obtain the latitude and longitude of the device where the screen is located, and then further obtain the daily sunrise time and sunset time of the longitude and latitude according to the longitude and latitude, and finally set the daily time according to the sunrise time and sunset time. daytime and nighttime periods.

When the time judging module 30 judges that the current time is not in the preset day time period, that is to say, when the current time is in the preset night time period, the blue light adjustment module 40 starts the automatic filtering function, adjusts the input value of blue light in the screen, and filters The blue light output by the screen; even if the current time is in the preset daytime period, the light intensity detection module 50 will further detect the light intensity of the current environment, and compare whether the light intensity of the current environment is less than the preset environment through the light intensity comparison module 60 Light threshold, in the case of insufficient light intensity, the blue light adjustment module 40 will also adjust (reduce) the input value of blue light in the screen, and then filter the blue light output by the screen. In this way, according to the actual situation, in dim nights and daytimes with insufficient light, the input value of blue light in the screen is reduced, thereby reducing the damage to human eyes caused by high-energy blue light in insufficient light conditions.

Another embodiment of the device of the present invention, on the basis of the above device embodiment, as shown in Figure 6, the blue light automatic adjustment device further includes:

The blue light detection module 70 is used to detect the intensity of blue light in the LED light emitted by the screen; specifically, the blue light detection module can be realized by using various existing blue light detection technologies, which is not limited in the present invention.

A blue light judging module 80, configured to judge whether the blue light intensity is greater than a preset blue light intensity threshold;

The blue light adjustment module 40 is further configured to adjust the input value of blue light in the screen and filter the blue light output by the screen when it is determined that the blue light intensity is greater than a preset blue light intensity threshold.

In this embodiment, on the basis of any of the above-mentioned embodiments, when the light intensity comparison module 60 compares that the current ambient light intensity is less than the preset ambient light threshold, the blue light detection module 70 detects the blue light intensity in the LED light emitted by the screen. , and then the blue light judgment module 80 judges that the current blue light intensity is greater than the preset blue light intensity threshold, the blue light adjustment module 40 will then reduce the input value of blue light in the screen to filter the blue light of the screen.

Of course, another embodiment of the device can also be based on the above-mentioned first device embodiment, the blue light adjustment module adjusts the input value of the blue light in the screen, filters the blue light output by the screen, and then passes the blue light detection module To detect the blue light intensity in the LED light emitted by the screen, if the blue light judgment module judges that the detected blue light intensity is greater than the preset blue light intensity threshold, then the blue light adjustment module will adjust the input value of the blue light in the screen again to reduce the input screen. The proportion of blue light is detected until the blue light intensity in the LED light emitted by the screen is detected to be less than the preset blue light intensity threshold.

Another embodiment of the device of the present invention, on the basis of the first device embodiment above, as shown in Figure 7, the blue light automatic adjustment device further includes:

A photographing module 90, configured to photograph the eye image of the user directly in front of the screen;

The image analysis module 100 is used to analyze and compare the user's eye image with the pre-stored reference eye image of the user, and determine whether the user's pupil changes exceed a preset amplitude change value;

The blue light adjustment module 40 is further configured to adjust the input value of blue light in the screen when it is determined that the pupil change of the user exceeds a preset amplitude change value.

The pupil of the human eye is more sensitive to blue light received. Specifically, increasing the level of blue light transmitted to the glasses will cause the pupil to constrict. When the pupil constricts, the iris image captured by the glasses is more likely to be of higher quality because the iris area is larger And more biometric features of the iris are evident. For a given capture resolution, an image of the iris taken when the iris is dilated and the pupil constricted will have a higher resolution than an image taken when the iris is constricted (and the pupil dilated), because the dilated iris provides more Large iris area. Due to the sensitivity of the human eye pupil to blue light, it can be analyzed according to the captured user's glasses image and the preset reference glasses image to see how much the user's pupil has shrunk compared to normal conditions, and the shrinkage exceeds a certain amount. Threshold, it is considered that the amount of blue light exceeds the safe range of blue light for the user. At this time, certain filtering measures need to be adopted to further filter the blue light on the screen. Of course, the contraction range can also be reflected by iris resolution.

In another embodiment of the device of the present invention, on the basis of any of the above device embodiments, as shown in FIG. 8 , the blue light adjustment module 40 includes:

Brightness adjustment sub-module 41, configured to adjust the brightness of the screen; and/or

The color temperature adjustment sub-module 42 is configured to adjust the color temperature of the screen.

Simply put, color temperature is the most common indicator of the spectral quality of a light source. "Warm light" has a lower color temperature, while "cool light" has a relatively higher color temperature. After the color temperature increases, the proportion of blue radiation increases, and the blue light increases accordingly. At the same time, the brightness also affects the proportion of blue light. The higher the brightness, the stronger the blue light radiation, and the lower the brightness, the lower the blue light output. Therefore, the blue light input of the screen can be controlled by adjusting the color temperature or brightness. For example, lowering the color temperature or reducing the brightness can reduce the blue light input, thereby filtering the blue light of the screen.

Finally, the present invention also discloses a system for adjusting blue light on a screen, including the device for adjusting blue light on a screen according to the present invention, and a protective film for covering the front of the screen, and the protective film has a blue light adjusting function.

Set a protective film with blue light regulating function on the screen. Specifically, the protective film (anti-blue light film) with the function of adjusting blue light includes at least one anti-blue light film layer or an anti-blue light coating. After the screen is covered with this anti-blue light protective film, it is equivalent to a physical anti-blue light, which filters the blue light emitted by the screen to a certain extent. For the daytime when natural light is relatively sufficient, then only this anti-blue light film is needed. However, at night or during the day when natural light is insufficient, it is necessary to use the device for adjusting blue light of the screen to further intelligently filter the screen on the premise that the anti-blue light film performs physical anti-blue light. Specifically, the The device for adjusting the blue light of the screen can detect the ambient light through the light sensor, and then determine whether to start the blue light filtering step according to the ambient light situation. In this way, on the one hand, it can ensure an appropriate filtering degree (anti-blue light film filter) and Clear visual enjoyment, on the other hand, it can guarantee a strong degree of filtering (anti-blue light film + screen blue light adjustment device to filter together) in the case of insufficient natural light, reducing the high-energy blue light hazards of LEDs as much as possible.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

While preferred embodiments of the invention have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, it is intended that the appended claims be construed to cover the preferred embodiment as well as all changes and modifications which fall within the scope of the invention.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (10)

1. A method for adjusting screen blue light, comprising: Acquiring the working state of the screen, and judging whether the screen is in a display state; When it is determined that the screen is in a display state, obtaining the current time; judging whether the current time is within a preset daytime time period; When it is determined that the current time is not in the preset daytime period, adjusting the input value of blue light in the screen to filter the blue light output by the screen; When it is determined that the current time is within the preset daytime time period, detecting the light intensity of the current environment; judging whether the light intensity of the current environment is less than a preset ambient light threshold; When it is determined that the light intensity of the current environment is less than the preset ambient light threshold, the input value of blue light in the screen is adjusted to filter the blue light output by the screen. 2 . The method for adjusting the blue light of a screen according to claim 1 , further comprising: setting a protective film with a blue light adjusting function on the screen. 3 . 3. A method for adjusting the blue light of the screen according to claim 2, characterized in that before or after adjusting the input value of the blue light in the screen and filtering the blue light output by the screen, further comprising: Detecting the intensity of blue light in the LED light emitted by the screen; judging whether the blue light intensity is greater than a preset blue light intensity threshold; When it is determined that the blue light intensity is greater than the preset blue light intensity threshold, the input value of blue light in the screen is adjusted. 4. A method for adjusting the blue light of the screen according to claim 1, characterized in that, before adjusting the input value of the blue light in the screen and filtering the blue light output by the screen, further comprising: taking an image of the user's eye directly in front of the screen; Analyzing and comparing the user's eye image with the pre-stored reference eye image of the user, and judging whether the user's pupil changes exceed a preset amplitude change value; When it is determined that the pupil change of the user exceeds a preset amplitude change value, the input value of blue light in the screen is adjusted. 5. A method for adjusting the blue light of the screen according to any one of claims 1-4, wherein adjusting the input value of the blue light in the screen specifically includes: adjust the brightness of said screen; and/or Adjusts the color temperature of the screen. 6. A device for adjusting screen blue light, characterized in that it comprises: A screen status acquiring module, configured to acquire the working status of the screen, and determine whether the screen is in a display status; A time acquisition module, configured to acquire the current time when it is determined that the screen is in a display state; A time judging module, configured to judge whether the current time is within a preset daytime time period; The blue light adjustment module is configured to adjust the input value of blue light in the screen and filter the blue light output by the screen when it is determined that the current time is not in the preset daytime period. A light intensity detection module, configured to detect the light intensity of the current environment when it is determined that the current time is within a preset daytime period; A light intensity comparison module, configured to determine whether the light intensity of the current environment is less than a preset ambient light threshold; The blue light adjustment module is further configured to adjust the input value of blue light in the screen and filter the blue light output by the screen when it is determined that the light intensity of the current environment is less than a preset ambient light threshold. 7. A device for adjusting screen blue light according to claim 6, further comprising: A blue light detection module, configured to detect the intensity of blue light in the LED light emitted by the screen; A blue light judging module, used to judge whether the blue light intensity is greater than a preset blue light intensity threshold; The blue light adjustment module is further configured to adjust the input value of blue light in the screen and filter the blue light output by the screen when it is determined that the blue light intensity is greater than a preset blue light intensity threshold. 8. A device for adjusting screen blue light according to claim 6, further comprising: A photographing module, configured to photograph the user's eye image directly in front of the screen; The image analysis module is used to analyze and compare the user's eye image with the pre-stored reference eye image of the user, and determine whether the user's pupil changes exceed a preset amplitude change value; The blue light adjustment module is further configured to adjust the input value of blue light in the screen when it is determined that the pupil change of the user exceeds a preset amplitude change value. 9. The device for adjusting the blue light of the screen according to any one of claims 6-8, wherein the blue light adjustment module comprises: a brightness adjustment sub-module, configured to adjust the brightness of the screen; and/or The color temperature adjustment sub-module is used to adjust the color temperature of the screen. 10. A system for adjusting the blue light of the screen, characterized in that it comprises the device for adjusting the blue light of the screen according to any one of claims 6-9, and a protective film for covering the front of the screen, the protective film has blue light Adjustment function.