CN204330128U - The measurement mechanism of ambient brightness and mobile terminal - Google Patents

Abstract

The utility model is applicable to the field of light technology, and provides a device for measuring ambient brightness and a mobile terminal. The device for measuring ambient brightness includes a light sensor and a light-taking window arranged above the light sensor; the device also includes a cover The light-taking window is a corrugated mirror that changes the ambient light passing through the light-taking window from incident light to vertical light. The environment brightness measuring device and the mobile terminal provided by the utility model can improve the accuracy of environment brightness measurement.

Description

Measuring device and mobile terminal for ambient brightness

technical field

The utility model relates to the field of light technology, in particular to a measuring device for ambient brightness and a mobile terminal.

Background technique

Under different brightness environments of mobile phone screens, the relative brightness perception of the same actual brightness by the human eye is different. For example, a screen that looks normal indoors becomes very dark and hard to see in an outdoor bright light environment, and the screen of the mobile phone is very bright when turned on at night. In order to solve the above problems, all mobile phones are now equipped with light sensors. The light sensor is generally located above the main board of the mobile phone. There is a light-taking window at the corresponding position on the mobile phone screen. The light sensor can automatically adjust the brightness of the mobile phone screen according to the current light brightness of the mobile phone. , giving the best visual effect. As shown in FIG. 1 and FIG. 2 , in the current general ambient light sensor structure, light with a very small incident angle can enter the ambient light sensor. In the case of a point light source in ambient light, such as a light bulb, the angle change of the device will cause drastic changes in the sensor measurement parameters, and the brightness of the ambient light cannot be accurately obtained.

Contents of the invention

In order to overcome the problems existing in the related technology, the embodiment of the utility model provides a measuring device for ambient brightness, so as to accurately adjust the display brightness of the screen.

According to the first aspect of an embodiment of the present invention, there is provided a device for measuring ambient brightness, including a light sensor and a light-taking window arranged above the light sensor; the device for measuring ambient brightness also includes a window covering the light-taking window. On the inside surface of the window, there is a corrugated mirror for changing the ambient light passing through the light-taking window into vertical light.

Preferably, the corrugated mirror is a film prism bonded on the inner surface of the light-taking window.

Preferably, the corrugated mirror refracts light from various directions incident through the light-taking window into perpendicular light incident on the light sensor.

The second aspect of the embodiment of the present invention provides a measurement device for ambient brightness, which is applied to a mobile terminal with a display screen, including:

The acquisition module is used to acquire the incident light of the current ambient light;

The incident light module is adjusted to vertically incident the incident ambient light to the light sensor through refraction.

Preferably, the device also includes:

An adjustment module, configured to adjust the brightness of the display according to the acquired ambient light parameter information, the parameter information at least including the light intensity value of the incident light.

Preferably, the device also includes:

Judging module, used for judging the magnitude of the light intensity value of the incident light;

The adjustment module is also used to adjust the display brightness of the screen to match the brightness value when it is judged that the light intensity value of the incident light reaches the set threshold.

Preferably, the device also includes:

The obtaining unit is also used to obtain the current state of the mobile terminal;

A detection module, configured to detect the light intensity value of the incident light according to the obtained current state;

The adjustment module is also used to adjust the brightness displayed on the screen according to the light intensity value of the incident light.

Preferably, the acquisition module includes:

Used to get the state of the facing ambient light source; or

Used to obtain the status of the side ambient light source; or

Used to get the state of the back-facing ambient light source.

Preferably, when the acquisition module acquires that the light sensor in the mobile terminal is facing the incident light source, an operation of increasing the level is performed in setting the strategy for adjusting the brightness of the screen, and the operation of increasing the level is to adjust the brightness of the screen more than the setting A brightness adjustment operation in which the brightness adjusted by the strategy is higher than the set brightness value;

When the acquisition module acquires that the light sensor in the mobile terminal is facing away from the incident light source, it executes a level-down operation in setting the policy for adjusting screen brightness, and the level-down operation is a brightness adjusted by the policy for adjusting screen brightness. Brightness adjustment operation lower than one set brightness value;

When the acquisition module acquires the incident light source from the side of the light sensor in the mobile terminal, it executes the operation of increasing the intensity of the incident light in setting the strategy for adjusting the brightness of the screen, and the operation of increasing the intensity of the incident light is to expand the incident angle of the light source.

A third aspect of the present invention provides a mobile terminal, including any device for measuring ambient brightness.

The technical solution provided by the embodiment of the utility model can include the following beneficial effects: the incident light of a larger angle can be obtained, so that all of it can enter the sensor, and the variation range of the ambient light sensor measurement value when the device is deflected is reduced, so that the test result is more accurate. Close to the actual value of the environment, in order to better adjust the brightness of the display and make the user more comfortable when viewing the displayed content.

It should be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention.

Description of drawings

The accompanying drawings, which are incorporated in the specification and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and are used together with the specification to explain the principle of the utility model.

Fig. 1 is the incident light structure diagram of the measuring device of existing ambient brightness;

Fig. 2 is the structural diagram of the incident light after the measuring device of the existing ambient brightness is rotated by an angle;

Fig. 3 is an incident structure diagram of a device for measuring ambient brightness according to an exemplary embodiment.

Fig. 4 is a schematic flowchart of a method for measuring ambient brightness according to an exemplary embodiment.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present invention. Rather, they are merely examples of devices and methods consistent with aspects of the invention as recited in the appended claims.

As shown in Figure 3, according to the first aspect of the embodiment of the present invention, this embodiment provides an environment brightness measurement device, including a light sensor 1, a light-taking window 2 arranged above the light sensor, the environment The luminance measuring device also includes a corrugated mirror 3 covering the inner surface of the light-taking window and changing the ambient light passing through the light-taking window into vertical light.

In this embodiment, the corrugated mirror is attached to a film prism on the inner surface of the light-taking window.

The corrugated mirror is used to refract light from various directions incident through the light-taking window into perpendicular light incident on the light sensor. The ambient brightness measuring device can avoid the problem that the light is too bright when the light directly hits the light sensor 1 , and the light that does not directly hit the light sensor 1 may be weak or no light shines into the light sensor 1 , which will affect the measurement. The environment luminance measuring device can truly measure the environment luminance, eliminate the adverse effect of the light source light on the luminance measurement, and improve the measurement accuracy.

As shown in FIG. 4, the second aspect of the embodiment of the present invention also provides a method for measuring ambient brightness, which is applied to a mobile terminal with a display screen. The method includes:

Step 401: Obtain the incident light of the current ambient light;

Step 402: Directly inject the incident ambient light to the light sensor through refraction.

The screen brightness of mobile terminals such as mobile phones can be automatically adjusted according to the ambient brightness, which can truly test the ambient brightness and eliminate the influence of light source light on brightness measurement. The mobile terminal is not limited to devices such as mobile phones, music players, video players, tablet computers, and smart watches.

Further, the method described in this embodiment also includes:

The display brightness is adjusted according to the acquired ambient light parameter information, where the parameter information at least includes the light intensity value of the incident light.

Determine the magnitude of the light intensity value of the incident light;

When it is judged that the light intensity value of the incident light reaches the set threshold value, the display brightness of the screen is adjusted to match the brightness value.

obtaining the current state of the mobile terminal;

According to the obtained current state, detect the light intensity value of the incident light;

Adjust the brightness of the screen display according to the light intensity value of the incident light.

The acquisition of the current state of the light sensor in the mobile terminal includes:

Facing the ambient light source state; or

side ambient light source status; or

Back-to-ambient light source status.

When it is acquired that the light sensor in the mobile terminal is facing the incident light source, an operation of raising the level is performed in the strategy of setting and adjusting the brightness of the screen, and the operation of raising the level is higher than the brightness adjusted by the strategy of setting and adjusting the brightness of the screen A brightness adjustment operation for setting the brightness value;

When it is acquired that the light sensor in the mobile terminal is facing away from the incident light source, the level-down operation is performed in the strategy for setting and adjusting the brightness of the screen, and the level-down operation is one level lower than the brightness adjusted by the strategy for setting and adjusting the brightness of the screen Brightness adjustment operation for setting the brightness value;

When the incident light source from the side of the light sensor in the mobile terminal is acquired, the operation of increasing the light intensity of the incident light is performed in setting the strategy for adjusting the brightness of the screen, and the operation of increasing the light intensity of the incident light is to expand the incident angle of the light source.

Another embodiment of the present invention also provides a mobile terminal, including any device for measuring ambient brightness.

The second aspect of the embodiment of the present invention provides a measurement device for ambient brightness, which is applied to a mobile terminal with a display screen, including:

The acquisition module is used to acquire the incident light of the current ambient light;

The incident light module is adjusted to vertically incident the incident ambient light to the light sensor through refraction.

Preferably, the device also includes:

An adjustment module, configured to adjust the brightness of the display according to the acquired ambient light parameter information, the parameter information at least including the light intensity value of the incident light.

Preferably, the device also includes:

Judging module, used for judging the magnitude of the light intensity value of the incident light;

The adjustment module is also used to adjust the display brightness of the screen to match the brightness value when it is judged that the light intensity value of the incident light reaches the set threshold.

Preferably, the device also includes:

The obtaining unit is also used to obtain the current state of the mobile terminal;

A detection module, configured to detect the light intensity value of the incident light according to the obtained current state;

The adjustment module is also used to adjust the brightness displayed on the screen according to the light intensity value of the incident light.

Preferably, the acquisition module includes:

Used to get the state of the facing ambient light source; or

Used to obtain the status of the side ambient light source; or

Used to get the state of the back-facing ambient light source.

Preferably, when the acquisition module acquires that the light sensor in the mobile terminal is facing the incident light source, an operation of increasing the level is performed in setting the strategy for adjusting the brightness of the screen, and the operation of increasing the level is to adjust the brightness of the screen more than the setting A brightness adjustment operation in which the brightness adjusted by the strategy is higher than the set brightness value;

When the acquisition module acquires that the light sensor in the mobile terminal is facing away from the incident light source, it executes a level-down operation in setting the policy for adjusting screen brightness, and the level-down operation is a brightness adjusted by the policy for adjusting screen brightness. Brightness adjustment operation lower than one set brightness value;

When the acquisition module acquires the incident light source from the side of the light sensor in the mobile terminal, it executes the operation of increasing the intensity of the incident light in setting the strategy for adjusting the brightness of the screen, and the operation of increasing the intensity of the incident light is to expand the incident angle of the light source.

A third aspect of the present invention provides a mobile terminal, including any device for measuring ambient brightness.

Other embodiments of the invention will be readily apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any modification, use or adaptation of the utility model, which follows the general principles of the utility model and includes common knowledge or common knowledge in the technical field not disclosed by the utility model. conventional technical means. The specification and examples are to be considered exemplary only, with a true scope and spirit of the invention indicated by the following claims.

It should be understood that the present invention is not limited to the precise structure which has been described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (10)

1. A measuring device for ambient brightness, comprising a light sensor, a light-taking window arranged above the light sensor; it is characterized in that, the ambient brightness measuring device also includes covering on the inner surface of the light-taking window, The ambient light passing through the light-taking window becomes a corrugated mirror of vertical light. 2 . The device according to claim 1 , wherein the corrugated mirror is a film prism attached to the inner surface of the light-taking window. 3 . 3 . The device according to claim 2 , wherein the corrugated mirror refracts light from various directions incident through the light-taking window into perpendicular light incident on the light sensor. 4 . 4. A measuring device for ambient brightness, applied to a mobile terminal with a display screen, characterized in that it comprises: The acquisition module is used to acquire the incident light of the current ambient light; The incident light module is adjusted to vertically incident the incident ambient light to the light sensor through refraction. 5. The device according to claim 4, further comprising: An adjustment module, configured to adjust the brightness of the display according to the acquired ambient light parameter information, the parameter information at least including the light intensity value of the incident light. 6. The device according to claim 4, further comprising: Judging module, used for judging the magnitude of the light intensity value of the incident light; The adjustment module is also used to adjust the display brightness of the screen to match the brightness value when it is judged that the light intensity value of the incident light reaches the set threshold. 7. The device according to claim 4, further comprising: The obtaining unit is also used to obtain the current state of the mobile terminal; A detection module, configured to detect the light intensity value of the incident light according to the obtained current state; The adjustment module is also used to adjust the brightness displayed on the screen according to the light intensity value of the incident light. 8. The device according to claim 7, wherein the acquisition module comprises: Used to get the state of the facing ambient light source; or Used to obtain the status of the side ambient light source; or Used to get the state of the back-facing ambient light source. 9. The device according to claim 8, wherein when the acquiring module acquires that the light sensor in the mobile terminal is facing the incident light source, an operation of increasing the level is performed in setting the strategy for adjusting the brightness of the screen, the increasing The high-level operation is a brightness adjustment operation that is higher than the brightness adjusted by the setting adjustment screen brightness strategy by a set brightness value; When the acquisition module acquires that the light sensor in the mobile terminal is facing away from the incident light source, it executes a level-down operation in setting the strategy for adjusting screen brightness, and the level-down operation is the brightness adjusted by the setting adjustment screen brightness policy Brightness adjustment operation lower than one set brightness value; When the acquisition module acquires the incident light source from the side of the light sensor in the mobile terminal, it executes the operation of increasing the intensity of the incident light in setting the strategy for adjusting the brightness of the screen, and the operation of increasing the intensity of the incident light is to expand the incident angle of the light source. 10. A mobile terminal, comprising the measuring device for ambient brightness according to any one of claims 1-9.