阅读说明：本技术 光谱检测电路模组以及移动终端 (Spectrum detection circuit module and mobile terminal ) 是由 陈朝喜 孙长宇 于 2020-05-26 设计创作，主要内容包括：本公开涉及一种光谱检测电路模组以及移动终端。其中,光谱检测电路模组包括发射电路以及光电转换电路；发射电路,用于向目标区域发射光线；光电转换电路,用于接收待测物体反射的反射光线,并具有多个检测通道,多个检测通道中的每个检测通道均设置有光波滤波片,且光波滤波片用于接收并检测预设波段的光,其中,预设波段的光对应的波段范围不同并小于预设波段范围阈值。通过本公开,可以使光谱检测电路模组中的检测通道检测的预设波段的光谱信息更加精确,进而使得光谱传感器检测的待测物体的光谱信息更加精确,有助于应用该光谱传感器的移动终端衍生出更多全新的用户体验。(The disclosure relates to a spectrum detection circuit module and a mobile terminal. The spectrum detection circuit module comprises an emission circuit and a photoelectric conversion circuit; an emission circuit for emitting light to a target area; the photoelectric conversion circuit is used for receiving reflected light reflected by an object to be detected and is provided with a plurality of detection channels, each detection channel in the plurality of detection channels is provided with a light wave filter, the light wave filters are used for receiving and detecting light of preset wave bands, and the wave band ranges corresponding to the light of the preset wave bands are different and are smaller than preset wave band range threshold values. Through this disclosure, can make the spectral information of the predetermined wave band that the measuring channel in the spectrum detection circuit module detected more accurate, and then make the spectral information of the object that awaits measuring that spectral sensor detected more accurate, help using this spectral sensor's mobile terminal to derive more brand-new user experience.)

1. The spectrum detection circuit module is characterized by comprising an emitting circuit and a photoelectric conversion circuit;

the emitting circuit is used for emitting light to a target area;

photoelectric conversion circuit for receive the reflected light of the object reflection that awaits measuring to a plurality of detection passageways have, every detection passageway in a plurality of detection passageways all is provided with the light wave filter, just the light wave filter is used for receiving and detects the light of predetermineeing the wave band, wherein, the wave band scope that the light of predetermineeing the wave band corresponds is different and is less than predetermineeing wave band scope threshold value.

2. The spectrum detection circuit module of claim 1, wherein the number of the plurality of detection channels is greater than or equal to a predetermined number.

3. The spectrum detection circuit module of claim 1, wherein the spectrum detection circuit module further comprises a receiving circuit;

wherein each of the plurality of detection channels in the photoelectric conversion circuit is connected to the reception circuit through a switch.

4. The spectrum detection circuit module of claim 3, wherein the receiving circuit comprises an operational amplifier circuit;

wherein each of the plurality of detection channels in the photoelectric conversion circuit is connected to the operational amplifier circuit in the receiving circuit through a switch.

5. The spectrum detection circuit module of claim 4, wherein the number of the operational amplifier circuits is one.

6. The spectrum detection circuit module of claim 1, wherein the plurality of detection channels are connected in parallel.

7. The spectrum detection circuit module of claim 1, wherein the optical wave filter comprises:

an optical film coated on the detection channel.

8. The spectrum detection circuit module of claim 1,

the wave band range of the reflected light rays reflected by the object to be detected and received by the photoelectric conversion circuit is larger than or equal to 380nm and smaller than or equal to 780 nm.

9. A mobile terminal, characterized in that the mobile terminal comprises:

the spectrum sensor is used for detecting the spectrum of an object to be detected and is arranged on the lower surface of a glass cover plate of the mobile terminal, wherein the spectrum sensor comprises the spectrum detection circuit module of any one of claims 1 to 8;

the emergent light hole is arranged on the glass cover plate and meets the requirement that the spectral sensor emits light to a target area along the emergent light hole;

and the incident light hole is arranged on the glass cover plate, and reflected light rays are received through the incident light hole and are emitted by the spectrum sensor and reflected by the object to be detected.

10. The mobile terminal of claim 9, wherein the mobile terminal further comprises:

the emergent light guide column is arranged on the spectral sensor and extends to the emergent light hole so that the spectral sensor emits light to the target area through the emergent light guide column and the emergent light hole in sequence;

and the incident light guide column is arranged on the spectrum sensor and extends to the incident light hole, so that the spectrum sensor receives the reflected light through the incident light hole and the incident light guide column in sequence.

11. The mobile terminal of claim 10, wherein the mobile terminal further comprises:

the separation column sets up in emergent light leaded light post with between the incident light leaded light post, wherein, emergent light leaded light post with incident light leaded light post passes through the separation column is separated, the material of separation column is light tight material.

Technical Field

The present disclosure relates to the field of spectrum detection technology, and in particular, to a spectrum detection circuit module and a mobile terminal.

Background

At present, mobile terminals have become an indispensable tool in people's daily life.

With the increase of mental demands of people, mobile terminals are required to have more completely new functions or user experiences. For example, if the mobile terminal has the capability of more accurately detecting the spectral information of the surrounding objects, it will be helpful for the mobile terminal to derive more new user experiences.

Disclosure of Invention

In order to overcome the problems in the related art, the present disclosure provides a spectrum detection circuit module and a mobile terminal.

According to a first aspect of the embodiments of the present disclosure, a spectrum detection circuit module is provided. The spectrum detection circuit module comprises an emission circuit and a photoelectric conversion circuit; an emission circuit for emitting light to a target area; the photoelectric conversion circuit is used for receiving reflected light reflected by an object to be detected and is provided with a plurality of detection channels, each detection channel in the plurality of detection channels is provided with a light wave filter, the light wave filters are used for receiving and detecting light of preset wave bands, and the wave band ranges corresponding to the light of the preset wave bands are different and are smaller than preset wave band range threshold values.

In one embodiment, the number of the plurality of detection channels is greater than or equal to a preset number.

In another embodiment, the spectrum detection circuit module further comprises a receiving circuit; wherein each of the plurality of detection channels in the photoelectric conversion circuit is connected to the receiving circuit through a switch.

In yet another embodiment, the receiving circuit includes an operational amplifier circuit; each detection channel in a plurality of detection channels in the photoelectric conversion circuit is connected with the operational amplifier circuit in the receiving circuit through the switch.

In another embodiment, the number of the operational amplifier circuits is one.

In another embodiment, the detection channels are connected in parallel.

In another embodiment, the optical wave filter includes: an optical film coated on the detection channel.

In another embodiment, the wavelength range of the reflected light reflected by the object to be measured received by the photoelectric conversion circuit is greater than or equal to 380nm and less than or equal to 780 nm.

According to a second aspect of embodiments of the present disclosure, a mobile terminal is provided. Wherein, mobile terminal includes: the spectrum sensor is used for detecting the spectrum of an object to be detected and is arranged on the lower surface of a glass cover plate of the mobile terminal, wherein the spectrum sensor comprises the spectrum detection circuit module in the first aspect of the disclosure or any embodiment of the first aspect; the emergent light hole is arranged on the glass cover plate and meets the requirement that the spectral sensor emits light to a target area along the emergent light hole; and the incident light hole is arranged on the glass cover plate, wherein the reflected light is received through the incident light hole, and the reflected light is the reflected light which is emitted by the spectrum sensor and reflected by the object to be measured.

In one embodiment, the mobile terminal further includes: the emergent light guide column is arranged on the spectral sensor and extends to the emergent light hole so that the spectral sensor emits light to the target area through the emergent light guide column and the emergent light hole in sequence; and the incident light guide column is arranged on the spectrum sensor and extends to the incident light hole so that the spectrum sensor receives the reflected light through the incident light hole and the incident light guide column in sequence.

In another embodiment, the spacer is disposed between the emergent light guide pillar and the incident light guide pillar, wherein the emergent light guide pillar and the incident light guide pillar are separated by the spacer, and the spacer is made of opaque material.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the spectrum detection circuit module provided by the disclosure can enable the spectrum information of the preset wave band detected by the detection channel to be more accurate, so that the spectrum information of the object to be detected by the spectrum sensor is more accurate, and more brand-new user experience can be derived by the mobile terminal applying the spectrum sensor.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic diagram illustrating a spectral detection circuit module according to an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic diagram illustrating another spectral detection circuit module according to an exemplary embodiment of the present disclosure;

FIG. 3 is a schematic diagram illustrating yet another spectral detection circuit module in accordance with an exemplary embodiment of the present disclosure;

fig. 4 is a schematic diagram illustrating a structure of a mobile terminal according to an exemplary embodiment of the present disclosure.

Detailed Description

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, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only a subset of the embodiments of the present disclosure, and not all embodiments. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present disclosure, and should not be construed as limiting the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure. Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

In the description of the present embodiment, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present embodiment. It should be noted that: the relative arrangement of the components, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

At present, only a small number of detection channels are usually provided in a spectrum detection circuit module for detecting light within a specific waveband range. For example, the detection channel A can detect the spectral information of light with 380 nm-580 nm; the detection channel B can detect the spectral information of light between 580nm and 780 nm. The spectral information detected by the spectral sensor of the spectral detection circuit module is not accurate enough due to the wide range of the wave band of the light detected by each detection channel, and the accuracy of the spectral information detected by the spectral sensor of the spectral detection circuit module is affected.

The first aspect of the present disclosure provides a spectrum detection circuit module for the spectrum information of the object to be detected by the spectrum sensor using the spectrum detection circuit module is more accurate, and the mobile terminal using the spectrum sensor is facilitated to derive more brand new user experiences.

Fig. 1 is a schematic diagram illustrating a spectrum detection circuit module according to an exemplary embodiment of the present disclosure.

In an exemplary embodiment of the present disclosure, as shown in fig. 1, the spectrum detection circuit module 100 includes an emission circuit 10 and a photoelectric conversion circuit 20. The transmission circuit 10 and the photoelectric conversion circuit 20 will be described separately.

The emitting circuit 10 is used to emit light to a target area.

The transmission parameters of the transmitting circuit 10, such as the transmission frequency, duty ratio, driving current, and the number of pulses, may be set by a Central Processing Unit (CPU), and transmitted to the transmitting circuit 10 through a communication circuit.

The emission circuit 10 emits light to the target area based on the emission parameters set by the CPU.

In an embodiment, when the spectrum sensor 210 with the spectrum detection circuit module 100 is applied to the mobile terminal 200, a collection area where light reaches can be determined according to a specific application scenario configured by the spectrum sensor 210, where the collection area is a target area. For example, in a call scenario, the spectrum sensor 210 is mainly used to collect the spectrum information of the side face of the user when the user makes or receives a call, and the spectrum sensor 210 may be disposed at a top position of the mobile terminal 200, as long as the position can collect the spectrum information of the side face of the user. For another example, when the spectrum sensor 210 is applied to a front-view scene and the spectrum sensor 210 is used to collect spectrum information of a front face of a user when the front-view is used, the spectrum sensor 210 may be disposed at any position facing the front of the display screen of the mobile terminal 200 as long as the position can collect spectrum information of the front face of the user.

The photoelectric conversion circuit 20 is used for receiving the reflected light which is emitted to the object to be measured by the emitting circuit 10 and reflected back.

The photoelectric conversion circuit 20 has a plurality of detection channels 201. Wherein, each detection channel 201 is provided with a light wave filter.

The light wave filter can receive and detect light of a preset wave band, wherein the wave band ranges corresponding to the light of the preset wave band are different and are smaller than a preset wave band range threshold value.

Because the wave band range that the light of the predetermined wave band that the light wave filter piece received and detected corresponds is less than predetermined wave band range threshold value, can guarantee that the wave band range that the light of the predetermined wave band that every light wave filter piece can detect corresponds can not too big, and then guarantee that the spectral information's of the light of the predetermined wave band that every light wave filter piece can detect accuracy is higher. Therefore, the accuracy of the whole spectrum information obtained after the spectrum information detected according to each optical wave filter is combined is ensured.

The light wave filter is arranged in the detection channel 201, so that each detection channel 201 can only receive and detect light in a corresponding wavelength range. For example, if the light wave filter a can filter out light in other wavelength bands within a wavelength band range of 380nm to 385nm, it means that the light wave filter a can only receive and detect light within a wavelength band range of 380nm to 385 nm. Therefore, the detection channel 201 provided with the optical wave filter a can receive and detect only light in a wavelength band range of 380nm to 385 nm.

Based on the same principle, the detection channel 201 provided with the light wave filter B can only receive and detect light with a wavelength band ranging from 385nm to 390 nm.

The preset wave band range threshold value can be adjusted according to actual conditions. For the above embodiment, the threshold of the preset band range corresponding to the optical wave filter a may be 379nm to 386 nm; the threshold of the preset wavelength range corresponding to the light wave filter B may be 384nm to 391 nm. In the present disclosure, the preset band range threshold corresponding to each optical wave filter is not specifically limited.

The utility model provides a spectrum detection circuit module 100, set up a plurality of detection channel 201 in photoelectric conversion circuit 20 through at spectrum detection circuit module 100, and the wave band scope of the light of the predetermined wave band that restricts every detection channel 201 detectable is less than predetermined wave band scope threshold value, so that the spectral information of the predetermined wave band that makes detection channel 201 detect is more accurate, and then can make the spectral information of the object that awaits measuring that spectral sensor 210 based on spectrum detection circuit module 100 detects more accurate, thereby help using this spectral sensor 210's mobile terminal 200 to derive more brand-new user experience.

In an exemplary embodiment of the present disclosure, the number of the plurality of detection channels 201 is greater than or equal to a preset number.

The preset number can be determined according to actual conditions, and in the present disclosure, the preset number is not specifically limited.

In one embodiment, the number of the plurality of detection channels 201 is also related to the wavelength band range of light detectable by the detection channels 201. The smaller the wavelength range of light detectable by each detection channel 201, the greater the number of detection channels 201. By increasing the number of the detection channels 201, the spectrum information of the object to be detected by the spectrum sensor 210 of the spectrum detection circuit module 100 can be more accurate.

In an exemplary embodiment of the present disclosure, the spectrum detection circuit module 100 further includes a receiving circuit 30.

Each detection channel 201 in the photoelectric conversion circuit 20 may be connected to the reception circuit 30 through a switch. Wherein the switch may be a single pole, single throw switch.

In one embodiment, each two detection channels 201 may also be connected to the receive circuit 30 through a double pole single throw switch. By the mode, the using amount of the switch can be effectively reduced.

Fig. 2 is a schematic diagram illustrating another spectral detection circuit module according to an exemplary embodiment of the present disclosure.

In an exemplary embodiment of the present disclosure, as shown in fig. 2, the receiving circuit 30 includes an operational amplifier circuit 301.

The operational amplifier circuit 301 is disposed in the receiving circuit 30, and can amplify the received light signals, so as to facilitate modular management of the circuit, and further improve the working efficiency of circuit management.

Further, each detection channel 201 in the photoelectric conversion circuit 20 may be connected to the operational amplifier circuit 301 in the receiving circuit 30 through a switch. Wherein the switch may be a single pole, single throw switch 202.

In the application process, when the detection channel a in the photoelectric conversion circuit 20 receives and detects light, the single-pole single-throw switch 202 connecting the detection channel a and the operational amplifier circuit 301 may be closed, and the other single-pole single-throw switches 202 may be opened, so as to implement the connection between the detection channel a and the operational amplifier circuit 301.

In one embodiment, each two detection channels 201 may also be connected to the operational amplifier circuit 301 in the receiving circuit 30 through a double-pole single-throw switch.

In the application process, when the detection channel a in the photoelectric conversion circuit 20 receives and detects light, the detection channel a may be connected to the operational amplifier circuit 301 through the single-pole double-throw switch, and the other single-pole double-throw switches are disconnected, so as to implement connection between the detection channel a and the operational amplifier circuit 301.

In one embodiment, the number of operational amplifier circuits 301 may be one.

The spectrum detection circuit module 100 can save the component cost by arranging one operational amplifier circuit 301 and realizing the connection of a plurality of detection channels 201 and one operational amplifier circuit 301 through a switch.

As a modification, the number of the operational amplifier circuits 301 may also be adjusted according to actual conditions, and is not limited to one.

In an exemplary embodiment of the present disclosure, the plurality of detection channels 201 may be connected in parallel.

In an embodiment, the multiple detection channels 201 are connected in parallel, which can ensure that when one of the detection channels 201 is disconnected from the operational amplifier circuit 301 through the single-pole single-throw switch 202, the normal connection and operation of the other detection channels 201 and the operational amplifier circuit 301 are not affected.

In order to more clearly show the operation of the spectrum detection circuit module 100 according to the present disclosure, the following embodiments are described.

Fig. 3 is a schematic diagram illustrating yet another spectrum detection circuit module according to the present disclosure in an exemplary embodiment.

In an exemplary embodiment of the present disclosure, as shown in fig. 3, the spectrum detection circuit module 100 further includes a CPU 40, a digital circuit 50, a communication circuit 60, and a power supply circuit 70.

The transmitting circuit 10 emits light to the outside, wherein the transmitting parameters of the transmitting circuit 10 are set by the CPU 40 and transmitted to the transmitting circuit 10 through the communication circuit 60.

The photoelectric conversion circuit 20 receives the reflected light which is emitted to the object to be measured by the emitting circuit 10 and reflected back. Wherein each detection channel 201 in the photoelectric conversion circuit 20 can receive and detect light of a preset wavelength band.

The detection channel 201 for receiving and detecting the light of the predetermined wavelength band is connected to the operational amplifier circuit 301 in the receiving circuit 30 through the single-pole single-throw switch 202. The receiving circuit 30 may further include an analog-to-digital conversion circuit.

The photoelectric conversion circuit 20 may convert the optical signal received and detected by the detection channel 201 into an electrical signal, and transmit the electrical signal to the operational amplifier circuit 301. After the operational amplifier circuit 301 amplifies the electrical signal, it needs to transmit the electrical signal to the analog-to-digital conversion circuit.

The receiving circuit 30 converts the electrical signal into a digital signal through an analog-to-digital conversion circuit, so that the spectrum detection circuit module 100 can store the digital signal corresponding to the optical signal received and detected by the detection channel 201.

Since a certain conversion time is required when analog-to-digital converting an analog signal, i.e. converting an electrical signal into a digital signal. During this conversion time, the analog signal needs to be kept substantially unchanged, so as to ensure the accuracy of the converted digital signal. Therefore, before the spectrum detection circuit module 100 converts the electrical signal into a digital signal through the analog-to-digital conversion circuit, it is necessary to ensure that the analog signal is substantially unchanged during the conversion time.

In an embodiment, the receiving circuit 30 may further include a sample-and-hold circuit.

Before transmitting the amplified electrical signal to the analog-to-digital conversion circuit, the operational amplifier circuit 301 needs to transmit the electrical signal to the sample-and-hold circuit for processing, so as to ensure that the electrical signal can be kept unchanged basically in the conversion time of converting the electrical signal into a digital signal.

Further, the receiving circuit 30 may transfer the converted digital signal to the digital circuit 50.

The digital circuit 50 includes a register. The spectrum sensing circuit module 100 may store, through a register, the digital signal corresponding to the light signal received and sensed by each sensing channel 201, that is, the spectrum information of the light received and sensed by each sensing channel 201.

Further, the communication circuit 60 transmits the digital signal corresponding to the optical signal received and detected by each detection channel 201 stored in the digital circuit 50 to the CPU 40. The CPU 40 may perform a combination process based on the spectrum information of the light received and detected by the respective detection channels 201 to complete the spectrum information.

In the spectrum detection circuit module 100, the power supply circuit 70 may supply power to the transmitter circuit 10, the receiver circuit 30, the communication circuit 60, and the like.

In an embodiment, the spectrum detection circuit module 100 may further include a temperature compensation circuit. Wherein. The temperature compensation circuit may be connected to the transmission circuit 10, the reception circuit 30, and the power supply circuit 70, respectively.

The temperature compensation circuit may compensate for and mitigate the problem of reduced circuit stability due to increased circuit noise caused by temperature for the transmit circuit 10, the receive circuit 30, and the power supply circuit 70.

In an embodiment, the spectrum detection circuit module 100 may further include a crystal oscillator circuit.

The crystal oscillator circuit is used for generating periodic signals for the spectrum detection circuit module 100, and dividing or doubling the frequency of the periodic signals to the transmitting circuit 10, the receiving circuit 30 and the power supply circuit 70. Thereby ensuring that the frequency information of each circuit in the spectrum detection circuit module 100 can be kept synchronous.

In an exemplary embodiment of the present disclosure, the optical wave filter includes an optical film coated on the detection channel 201.

Different optical films may receive light in different predetermined wavelength bands.

The optical film coated on the detection channel 201 may be one layer or multiple layers.

In an exemplary embodiment of the present disclosure, the wavelength band range of the reflected light emitted and reflected by the transmitting circuit 10 on the object to be measured is greater than or equal to 380nm and less than or equal to 780nm for the photoelectric conversion circuit 20.

The wavelength range of light that the photoelectric conversion circuit 20 can detect is determined according to the wavelength range of light that each detection channel 201 can detect.

If the photoelectric conversion circuit 20 has 5 detection channels in total, wherein the wavelength range corresponding to the light of the preset wavelength band received and detected by the detection channel a is 380nm to 390 nm; the wavelength range corresponding to the light of the preset wavelength band received and detected by the detection channel B is 390 nm-400 nm; the wavelength range corresponding to the light of the preset wavelength band received and detected by the detection channel C is 400 nm-410 nm; the wavelength range corresponding to the light of the preset wavelength band received and detected by the detection channel D is 410 nm-420 nm; the wavelength range corresponding to the light of the preset wavelength band received and detected by the detection channel E is 420 nm-430 nm; it means that the wavelength range of light that the photoelectric conversion circuit 20 can detect is 380nm to 430 nm.

In the application process of the mobile terminal 200, the spectrum information of the visible light may affect new functions derived from the mobile terminal 200. Therefore, the wavelength range of light that the photoelectric conversion circuit 20 can detect can be made in the range of visible light, that is, the wavelength range is greater than or equal to 380nm and less than or equal to 780 nm. In the application process, the detection can be realized by arranging the corresponding detection channel 201 in the photoelectric conversion circuit 20 of the spectrum detection circuit module 100.

Fig. 4 is a schematic diagram illustrating a structure of a mobile terminal according to an exemplary embodiment of the present disclosure.

Based on the same inventive concept, a second aspect of the present disclosure provides a mobile terminal 200.

In an exemplary embodiment of the present disclosure, as shown in fig. 4, the mobile terminal 200 includes a light sensor 210, an exit pupil 220, and an entrance pupil 230. The respective components and the connection relationship of the components will be described separately below.

The spectrum sensor 210 is used for detecting a spectrum of an object to be measured, and is disposed on a lower surface of the glass cover 240 of the mobile terminal 200. The spectrum sensor 210 includes the spectrum detection circuit module 100 described in the first aspect of the present disclosure and any one of the embodiments of the first aspect.

And an exit pupil 220 disposed on the glass cover 240 at a position where the spectral sensor 210 emits light toward a target area along the exit pupil 220.

The spectral sensor 210 may emit light to the target area through the exit pupil 220. The light emitted from the exit pupil 220 to the target area is reflected by the object to be measured, and enters the spectrum sensor 210 through the entrance pupil 230.

The incident light hole 230 is provided in the glass cover plate 240. The spectrum sensor 210 receives the reflected light through the incident light hole 230, wherein the reflected light is the reflected light emitted by the spectrum sensor 210 and reflected back by the object to be measured.

In one embodiment, the spectrum sensor 210 may also be disposed on a lower surface of a display screen of the mobile terminal 200.

The exit pupil 220 and the entrance pupil 230 may be respectively disposed on the display screen and extend from the display screen to the glass cover 240, so that the spectrum sensor 210 can emit light to the target area through the exit pupil 220, and the light emitted to the target area by the exit pupil 220 may enter the spectrum sensor 210 through the entrance pupil 230 after encountering the object to be measured and being reflected.

In an exemplary embodiment of the present disclosure, the mobile terminal 200 further includes an exit light guide pillar.

The emergent light guide pillar is disposed on the spectrum sensor 210 and extends to the emergent light hole 220, so that the spectrum sensor 210 sequentially passes through the emergent light guide pillar and the emergent light hole 220 to emit light to the target area.

The mobile terminal 200 further includes an incident light guide pillar.

The incident light guide pillar is disposed on the spectrum sensor 210 and extends to the incident light hole 230, so that the spectrum sensor 210 receives the reflected light through the incident light hole 230 and the incident light guide pillar in sequence.

The reflected light is the reflected light emitted by the spectrum sensor 210 and emitted back by the object to be measured.

The mobile terminal 200 is provided with the emergent light guide pillar, so that the spectral sensor 210 can emit light to the target area along the emergent light guide pillar and the emergent light hole 220 without light energy loss inside the mobile terminal 200 in the process of emitting light to the target area.

The mobile terminal 200 is provided with the incident light guide column, so that the spectral sensor 210 can be ensured not to lose light energy in the mobile terminal 200 in the process of receiving the reflected light, but receive the reflected light along the incident light hole 230 and the incident light guide column, and the accuracy and efficiency of detecting spectral information by the spectral sensor 210 are improved.

In an exemplary embodiment of the present disclosure, the mobile terminal 200 further includes a spacer.

The separation column is arranged between the emergent light guide column and the incident light guide column, wherein the emergent light guide column and the incident light guide column are separated through the separation column. The isolation column is made of opaque material.

In this way, the light emitted by the spectrum sensor 210 along the outgoing light guide column and the outgoing light hole 220 and the light received along the incoming light hole 230 and the incoming light guide column can be prevented from crosstalk, so that the accuracy of the light emitted by the spectrum sensor 210 to the target area and the accuracy of the reflected light reflected by the light emitted to the target area can be improved, and the accuracy of the spectral information of the object to be detected obtained through detection is ensured.

In an exemplary embodiment of the present disclosure, the above-mentioned mobile terminal 200 may be a mobile phone, a tablet computer, a smart wearable, or other mobile terminal devices.

The mobile terminal 200 provided by the present disclosure employs the spectrum sensor 210 having the spectrum detection circuit module 100.

Because a plurality of detection channels 201 are arranged in the photoelectric conversion circuit 20 of the spectrum detection circuit module 100, and the wave band range of the light of the preset wave band, which can be detected by each detection channel 201, is limited to be smaller than the threshold value of the preset wave band range, the spectrum information of the preset wave band, which is detected by the detection channel 201, can be more accurate, and further the spectrum information of the object to be detected, which is detected by the spectrum sensor 210, is more accurate, thereby being beneficial to deriving more brand new user experiences from the mobile terminal 200.

Since the mobile terminal 200 is provided with the spectrum sensor 210, the transmission power of a proximity sensor (P-sensor) may be adjusted based on the skin color information of the user detected by the spectrum sensor 210, or the proximity threshold and the distance threshold set by the mobile terminal 200 may be adjusted. By the method, the corresponding transmitting power, the approaching threshold value and the departing threshold value can be adjusted according to the conditions of different users, so that the set transmitting power, the set approaching threshold value and the set departing threshold value are more personalized to the users, and the experience of the users is further improved.

The mobile terminal 200 may also determine a first color temperature value of light irradiated on the user's face based on spectrum information of the light irradiated on the user's face detected by the spectrum sensor 210. And adjusting the second color temperature value of the screen based on the first color temperature value to make the second color temperature value of the screen uniform with the first color temperature value of the light irradiated on the face of the user, thereby improving the experience of the user in the process of using the mobile terminal 200.

In one embodiment, the spectral information corresponding to the light received and detected by the detection channels 201 may be detected by the plurality of detection channels 201 in the spectrum sensor 210, and the spectral information of the light received and detected by the detection channels 201 may be combined into a complete spectral information. And the integrated spectral information after combination is the spectral information of the object to be detected.

And obtaining RGB three-channel values corresponding to the spectral information based on the spectral information of the object to be detected obtained through detection, and obtaining corresponding color coordinates by carrying out normalization solving processing on the RGB three-channel values.

Further, the color temperature value of the object to be measured can be obtained based on the color coordinates.

After the color temperature value of the object to be measured is known, the screen of the mobile terminal 200 may be adjusted, so that the color temperature value of the screen of the mobile terminal 200 is uniform with the color temperature value of the object to be measured.

The color displayed by the screen is determined by the color displayed by the plurality of pixel points, and the color which can be displayed by each pixel point is determined by the color synthesized by the R sub-pixel, the G sub-pixel and the B sub-pixel which correspond to each pixel point. Therefore, the color of the screen display can be adjusted by adjusting the colors of the R, G, and B sub-pixels of each pixel point.

Taking an OLED display screen (Organic Light-Emitting Diode, abbreviated as OLED) as an example, the color displayed by each pixel point on the OLED display screen is determined by the voltage of the R sub-pixel, the G sub-pixel, and the B sub-pixel of each pixel point. Therefore, the colors displayed by the R, G and B sub-pixels can be adjusted by adjusting the voltages of the R, G and B sub-pixels of each pixel point. And then determining the color displayed by each pixel point based on the colors displayed by the R sub-pixel, the G sub-pixel and the B sub-pixel, and determining the color temperature value displayed by the screen based on the color displayed by each pixel point.

The above embodiment realizes more accurate detection of the spectral information of the object to be detected by the spectral sensor 210 in the mobile terminal 200. And adjusts the color temperature value of the screen of the mobile terminal 200 based on the detected spectral information of the object to be detected. In this way, the experience of the user in using the mobile terminal 200 is improved.

The foregoing description of the implementations of the disclosure has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure to the precise form disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the disclosure. The embodiments were chosen and described in order to explain the principles of the disclosure and its practical application to enable one skilled in the art to utilize the disclosure in various embodiments and with various modifications as are suited to the particular use contemplated.