Optical sensing device and electronic equipment

Abstract

The invention discloses an optical sensing device and electronic equipment. The optical sensing device comprises a shell, a first cavity and a second cavity which are independent of each other are arranged in the shell, and a light inlet area and a light shielding area are formed in the second cavity; the driving element is mounted in the first cavity or the second cavity; the transmitting module is at least partially arranged in the first cavity, the transmitting module is electrically connected with the driving element, and the driving element is used for driving the transmitting module to transmit a sensing optical signal; the receiving module is at least partially arranged in the second cavity and located in the light inlet area, and the receiving module is used for receiving the sensing light signal; the calibration module is arranged in the second cavity and located in the light shielding area; the calibration module comprises a calibration light source and a calibration photosensitive element which are arranged at an interval, the calibration light source is electrically connected with the driving element, and the driving element is used for driving the calibration light source to emit a calibration light signal; the calibration photosensitive element is used for receiving a calibration light signal. According to the optical sensing device and the electronic equipment provided by the invention, the accuracy of a measurement result can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to an optical sensing component and an electronic equipment. Background Art

[0002] Optical detection components can be used to detect multiple parameters such as time and distance, and have been widely used in various electronic devices.

[0003] The optical detection component generally includes an optical generator and an optical receiver. The measurement result is obtained by calculating the time from when the optical generator emits light radiation to when the optical receiver receives the light radiation.

[0004] However, during the test, it was found that the time when the optical generator emits light radiation is usually calculated based on its power-on time, but in fact there is a time difference from the power-on of the optical generator to the emission of light radiation, which leads to inaccurate final measurement results.

[0005] At the same time, in order to achieve normal propagation of light, the installation environment of the optical generator is usually in a semi-open state. If a detection device is set around the optical generator to detect the time difference between the optical generator being powered on and the optical radiation being emitted, various lights in the surrounding environment will propagate to the vicinity of the optical generator, causing interference with the detection results and resulting in inaccurate detection results.

[0006] Therefore, how to accurately detect the time difference between the optical generator being powered on and the optical radiation being emitted so as to calibrate the measurement result of the optical detection component has become an urgent problem to be solved in the art. Summary of the invention

[0007] The optical sensing device and electronic device provided in the present application can improve the accuracy of measurement results.

[0008] The optical sensing device provided by the present application comprises:

[0009] A housing, wherein a first chamber and a second chamber are provided independently of each other, and a light-incoming area and a light-shielding area are formed inside the second chamber;

[0010] A driving element, installed inside the first chamber or the second chamber;

[0011] a transmitting module, at least partially installed inside the first chamber, the transmitting module being electrically connected to the driving element, and the driving element being used to drive the transmitting module to emit a sensing light signal;

[0012] a receiving module, at least partially installed inside the second chamber and located in the light-entering area, the receiving module being used to receive the sensing light signal;

[0013] A calibration module is installed inside the second chamber and located in the light-shielding area; the calibration module includes a calibration light source and a calibration photosensitive element that are arranged at intervals, the calibration light source is electrically connected to the driving element, and the driving element is used to drive the calibration light source to emit a calibration light signal; the calibration photosensitive element is used to receive the calibration light signal.

[0014] The optical sensing device as described above, wherein the housing comprises:

[0015] A circuit board, on which the transmitting module, the receiving module, the calibration light source, the calibration photosensitive element and the driving element are all mounted;

[0016] A top cover having a top plate and a peripheral wall connected thereto, wherein the top plate is arranged opposite to the circuit board, and the peripheral wall is connected to the circuit board at an edge away from the top plate;

[0017] The first baffle is fixedly connected to the top plate and the peripheral wall respectively, and the first baffle is in contact with the circuit board. The interior of the shell is divided by the first baffle to form the first chamber and the second chamber.

[0018] The optical sensing device as described above, wherein the calibration module further comprises:

[0019] A reflective structure is disposed on the top plate, and along a direction from the top plate to the circuit board, at least a portion of the projection of the calibration light source and at least a portion of the projection of the calibration photosensitive element overlap with the projection of the reflective structure.

[0020] In the optical sensing device as described above, along the direction in which the calibration light source and the calibration photosensitive element are spaced apart, the size of the reflective structure is greater than or equal to the center distance between the calibration light source and the calibration photosensitive element.

[0021] In the optical sensing device as described above, the reflective structure comprises a reflective groove recessed on the top plate, and a notch of the reflective groove faces the circuit board.

[0022] As described above, the optical sensing device, wherein the reflective groove is a trapezoidal groove that gradually expands from its bottom to its groove mouth, the trapezoidal groove includes a first reflective surface, a second reflective surface and a third reflective surface, the second reflective surface is connected between the first reflective surface and the third reflective surface, the second reflective surface is parallel to the circuit board, and the distance between the first reflective surface and the second reflective surface gradually increases along the direction from the top plate to the circuit board.

[0023] In the optical sensing device as described above, an angle of 10° to 30° is formed between the first reflective surface and the circuit board, and between the second reflective surface and the circuit board.

[0024] In the optical sensing device as described above, the reflective groove is an arc-shaped groove that gradually expands from the groove bottom to the groove mouth.

[0025] The optical sensing device as described above, wherein the reflective structure further comprises:

[0026] A reflective film is covered on the wall of the reflective groove;

[0027] Or, a beam deflector is embedded inside the reflecting groove.

[0028] The optical sensing device as described above, wherein the transmitting module comprises:

[0029] An emitting light source is mounted on the circuit board, and the emitting light source is electrically connected to the driving element;

[0030] An emitting lens group, wherein a first opening is provided on the top plate, the first opening is connected to the light inlet area, the emitting lens group is installed on the first opening, and the emitting lens group and the emitting light source are arranged opposite to each other along the direction from the top plate to the circuit board.

[0031] The optical sensing device as described above, wherein the receiving module comprises:

[0032] A receiving photosensitive element mounted on the circuit board;

[0033] A receiving lens group, a second opening is provided on the top plate, the second opening is communicated with the first chamber, the receiving lens group is installed on the second opening, and the receiving lens group and the receiving photosensitive element are arranged opposite to each other along the direction from the top plate to the circuit board.

[0034] As described above, the optical sensing device includes a photosensor installed on the circuit board, the photosensor having a first photosensing area and a second photosensing area spaced apart from each other, the first photosensing area being located in the light-entering area and being arranged opposite to the second opening and serving as a receiving photosensing element, the second photosensing area being located in the light-shielding area and being staggered from the second opening and serving as a calibration photosensing element.

[0035] The optical sensing device as described above, wherein the optical sensing device also includes a second baffle, which is fixedly connected to the top plate and the surrounding wall respectively, the side of the second baffle away from the first baffle is the light-incoming area, and the area between the second baffle and the first baffle is the light-shielding area; along the direction from the top plate to the circuit board, the projection of the second baffle is located between the receiving photosensitive element and the calibration photosensitive element, and a gap of 50μm to 80μm is formed between the second baffle and the photosensitive sensor.

[0036] The present application also provides an electronic device, wherein the electronic device includes a power supply and the optical sensing device as described above.

[0037] The optical sensing device and electronic device provided by the present application are configured with a calibration module including a calibration light source and a calibration photosensitive element. The light emitted by the calibration light source is sensed by the calibration photosensitive element, and the duration between the power-on time of the calibration light source and the emission of the calibration light signal can be calculated, so as to calibrate the measurement result when the receiving module senses the light signal as calibration data. Since the calibration module is arranged in the light-shielding area of ​​the second chamber, the influence of stray light in the surrounding environment on the calibration data can be effectively reduced, thereby improving the detection precision and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0039] Figure 1 A schematic diagram of the structure of an optical sensing device provided in an embodiment of the present application;

[0040] Figure 2 An exploded diagram of an optical sensing device provided in an embodiment of the present application;

[0041] Figure 3 A schematic diagram of the internal structure of an optical sensing device provided in an embodiment of the present application;

[0042] Figure 4 A schematic structural diagram of a top cover of a housing of an optical sensing device provided in an embodiment of the present application when the reflective groove is a trapezoidal groove;

[0043] Figure 5 A cross-sectional view of the structure other than the top cover of the optical sensing device provided in an embodiment of the present application when the reflective groove is a trapezoidal groove;

[0044] Figure 6 for Figure 5 A magnified view of the structure at center;

[0045] Figure 7 A schematic diagram of the structure of the optical sensing device provided in an embodiment of the present application when the reflective groove is a trapezoidal groove;

[0046] Figure 8 A schematic diagram of the structure of a reflective groove of an optical sensing device provided in an embodiment of the present application when the reflective groove is a trapezoidal groove;

[0047] Fig. 9 A schematic structural diagram of a top cover of a housing of an optical sensing device provided in an embodiment of the present application when the reflective groove is an arc-shaped groove;

[0048] Fig.10 A cross-sectional view of the structure other than the top cover of the optical sensing device provided in an embodiment of the present application when the reflective groove is an arc groove;

[0049] Fig.11 for Fig.10 A magnified view of the structure at B in the middle;

[0050] Fig.12 A schematic diagram of the structure of the optical sensing device provided in an embodiment of the present application when the reflective groove is an arc groove;

[0051] Fig.13 A schematic structural diagram of a top cover of a housing of an optical sensing device provided in an embodiment of the present application when the reflective groove is a rectangular groove;

[0052] Fig.14 A cross-sectional view of the structure other than the top cover of the optical sensing device provided in an embodiment of the present application when the reflective groove is a rectangular groove;

[0053] Fig.15 for Fig.14 A magnified view of the structure at center;

[0054] Fig.16 A schematic diagram of the structure of the optical sensing device provided in an embodiment of the present application when the reflective groove is a rectangular groove;

[0055] Fig.17 An exploded view of a reflective slot and a beam deflector of an optical sensing device provided in an embodiment of the present application;

[0056] Fig.18 Another schematic diagram of the structure of the top cover of the housing of the optical sensing device provided in an embodiment of the present application;

[0057] Fig.19 An exploded view of the top cover of the housing of the optical sensing device provided in an embodiment of the present application.

[0058] Description of Figure Numbers:

[0059] 1. Shell; 11. Circuit board; 12. Top cover; 121. Top plate; 1211. First opening; 1212. Second opening; 122. Peripheral wall; 13. First chamber; 14. Second chamber; 141. Light-entering area; 142. Light-shielding area; 2. First baffle; 3. Transmitting module; 31. Transmitting light source; 32. Transmitting lens group; 4. Receiving module; 41. Receiving photosensitive element; 42. Receiving lens group; 5. Calibration module; 51. Calibration light source; 52. Calibration photosensitive element; 53. Reflection structure; 531. Reflection groove; 5311. First reflection surface; 5312. Second reflection surface; 5313. Third reflection surface; α, angle; β, angle; 532. Beam deflector; 6. Driving element; 7. Photosensitive sensor; 8. Second baffle; 9. Filter. DETAILED DESCRIPTION

[0060] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0061] like Figures 1 to 3 As shown, the optical sensing device provided by the present application includes a housing 1 , a transmitting module 3 , a receiving module 4 , a calibration module 5 and a driving element 6 .

[0062] The shell 1 can be used to set up the transmitting module 3, the receiving module 4, the calibration module 5 and the driving element 6, so that the shell 1 provides protection for the transmitting module 3, the receiving module 4, the calibration module 5 and the driving element 6, and at the same time realizes the optical sensing device to form an integral structure.

[0063] The housing 1 has a first chamber 13 and a second chamber 14 that are independent of each other to prevent light in the first chamber 13 from entering the second chamber 14 or light in the second chamber 14 from entering the first chamber 13 to interfere with the measurement result of the optical sensing device.

[0064] The second chamber 14 has a light-incoming area 141 and a light-shielding area 142 therein. The light-incoming area 141 allows the light emitted by the emitting module 3 to pass therein, and the light-shielding area 142 can reduce the propagation and diffusion of stray light therein.

[0065] The driving element 6 is installed inside the first chamber 13 or the second chamber 14 .

[0066] A portion of the transmitting module 3 is installed in the first chamber 13, and the transmitting module 3 is electrically connected to the driving element 6. The driving element 6 is used to drive the transmitting module 3 to emit a sensing light signal. Another portion of the transmitting module 3 extends to the outside of the shell 1 to enable the sensing light signal emitted by the transmitting module 3 to be transmitted to the outside of the shell 1.

[0067] A portion of the receiving module 4 is installed in the second chamber 14 and located in the light input area 141, and the other portion extends through the outside of the shell 1 to receive the sensing light signal emitted by the transmitting module 3, and calculates the time from the power-on of the transmitting module 3 to the reception of the sensing light signal by the receiving module 4 as the preliminary sensing time.

[0068] The calibration module 5 is installed inside the second chamber 14 and is located in the light-shielding area 142; the calibration module 5 includes a calibration light source 51 and a calibration photosensitive element 52 which are arranged at intervals. The calibration light source 51 is electrically connected to the driving element 6; the driving element 6 is used to drive the calibration light source 51 to send a calibration light signal, and the calibration photosensitive element 52 is used to receive the calibration light signal, and the calibration photosensitive element 52 can calculate the time from the calibration light source 51 being powered on to the calibration photosensitive element receiving the calibration light signal as the calibration time, and send the calibration time to the receiving module 4; the receiving module 4 calculates the difference between the preliminary sensing time and the calibration time to obtain the actual sensing time.

[0069] It should be noted that, since the types of light sources used may be different, the time between when the transmitting module 3 is actually powered on and when it emits a light signal may have a very small error from the calibration data, and this error can be ignored.

[0070] The optical sensing device provided in the present application is equipped with a calibration module 5 including a calibration light source 51 and a calibration photosensitive element 52. The calibration photosensitive element 52 senses the light emitted by the calibration light source 51, and can calculate the time between the power-on time of the calibration light source 51 and the emission of the calibration light signal, so as to calibrate the measurement result when the receiving module 4 senses the light signal as calibration data. Since the calibration module 5 is arranged in the light-shielding area 142 of the second chamber 14, the influence of stray light in the surrounding environment on the calibration data can be effectively reduced, thereby improving the detection precision and accuracy.

[0071] like Figure 3 As shown, the optical sensing device provided by the present application, wherein the housing 1 includes a circuit board 11 , a top cover 12 and a first baffle 2 .

[0072] The transmitting module 3, the receiving module 4, the calibration light source 51, the calibration photosensitive element 52 and the driving element 6 are all installed on the circuit board 11; the circuit board 11 serves as the bottom plate of the shell 1 on the one hand, and realizes the electrical connection of the transmitting module 3, the receiving module 4, the calibration light source 51, the calibration photosensitive element 52 and the driving element 6 on the other hand.

[0073] The top cover 12 has a roughly shell-like structure, including a top plate 121 and a peripheral wall 122. The top plate 121 is arranged opposite to the circuit board 11, and the edge of the peripheral wall 122 away from the top plate 121 is connected to the circuit board 11. The inner surface of the top cover 12 and the side surface of the circuit board 11 facing the top cover 12 are enclosed to form a closed cavity.

[0074] The first baffle plate 2 is perpendicular to the top plate 121, and the first baffle plate 2 is fixedly connected to the top plate 121 and the peripheral wall 122 respectively. Optionally, the first baffle plate 2, the top plate 121 and the peripheral wall 122 can be integrally formed to reduce the difficulty of processing while ensuring the connection strength between the first baffle plate 2 and the top shell. The first baffle plate 2 is also in contact with the circuit board 11. The interior of the shell 1 is separated by the first baffle plate 2 to form a first chamber 13 and a second chamber 14. The first baffle plate 2 is in contact with the circuit board 11. While separating the interior of the shell 1, it can effectively reduce and prevent the light in the first chamber 13 from entering the second chamber 14 through the gap between the first baffle plate 2 and the circuit board 11, thereby reducing light pollution in the second chamber 14.

[0075] like Figures 4 to 17 As shown, the optical sensing device provided by the present application, wherein the calibration module 5 also includes a reflective structure 53, and the reflective structure 53 is arranged on the top plate 121. Along the direction from the top plate 121 to the circuit board 11, at least part of the projection of the calibration light source 51 and at least part of the projection of the calibration photosensitive element 52 coincide with the projection of the reflective structure 53; by setting the reflective structure 53, the light emitted by the calibration light source 51 can be reflected to the position of the calibration photosensitive element 52, thereby improving the light intensity at the calibration photosensitive element 52, ensuring the accuracy of the sensing effect, and avoiding the situation where the calibration photosensitive element 52 has an inaccurate detection effect due to weak light.

[0076] like Figure 3 , Figure 7 , Fig.12 and Fig.16 As shown, in the optical sensing device provided by the present application, along the direction in which the calibration light source 51 and the calibration photosensitive element 52 are spaced apart, the size D of the reflective structure 53 is greater than or equal to the center distance between the calibration light source 51 and the calibration photosensitive element 52. This ensures that the reflective structure 53 has a larger light receiving area, can receive as much light as possible from the calibration light source 51 and reflect it to the calibration photosensitive element 52, improves the light intensity around the calibration photosensitive element 52, and ensures the accuracy of the sensing result of the calibration photosensitive element 52.

[0077] like Figures 4 to 17As shown, the optical sensing device provided by the present application, wherein the reflective structure 53 includes a reflective groove 531 recessed on the top plate 121, and the groove opening of the reflective groove 531 faces the circuit board 11. After the light emitted by the calibration light source 51 enters the reflective groove 531, it is reflected by the groove wall of the reflective groove 531 and transmitted to the calibration photosensitive element 52.

[0078] Alternatively, if Figures 4 to 8 As shown, the optical sensing device provided by the present application, wherein the reflective groove 531 is a trapezoidal groove that gradually expands from the bottom of the groove to the groove opening, and the trapezoidal groove includes a first reflective surface 5311, a second reflective surface 5312 and a third reflective surface 5313, the second reflective surface 5312 is connected between the first reflective surface 5311 and the third reflective surface 5313, the second reflective surface 5312 is parallel to the circuit board 11, and the distance between the first reflective surface 5311 and the second reflective surface 5312 gradually increases along the direction from the top plate 121 to the circuit board 11. That is, the groove opening size of the reflective groove 531 is larger, while the groove bottom size is smaller, which is conducive to accommodating light reflected from more positions, and gathering the light entering the reflective groove 531 and transmitting it toward the direction of the calibration photosensitive element 52.

[0079] Alternatively, if Figure 8 As shown, the optical sensing device provided by the present application, wherein an angle α is formed between the first reflective surface 5311 and the circuit board 11, and an angle β is formed between the second reflective surface 5312 and the circuit board 11, the sizes of the angle α and the angle β are both 10° to 30°, and the sizes of the angle α and the angle β can be equal or unequal, and are adjusted according to the relative positions between the reflective groove 531 and the calibration light source 51 and the reflective groove 531 and the calibration photosensitive element 52.

[0080] Alternatively, if Figures 9 to 12 As shown, the optical sensing device provided by the present application, wherein the reflective groove 531 is an arc groove that gradually expands from its groove bottom to its groove opening. Similar to the trapezoidal groove, the arc groove also has a larger groove opening size and a smaller groove bottom size, which is conducive to accommodating light reflected from more positions and converging the light entering the reflective groove 531 and transmitting it toward the calibration photosensitive element 52.

[0081] Optionally, the reflective structure 53 further includes a reflective film, which is coated on the groove wall of the reflective groove 531 ; the reflection effect of the reflective structure 53 on light can be further improved by providing a reflective surface.

[0082] like Figures 13 to 17As shown, the optical sensing device provided by the present application, wherein the reflective groove 531 is a rectangular groove, and the reflective structure 53 further includes a beam deflector 532, which is embedded in the reflective groove 531. The beam deflector 532 is a micro-nano optical element, which is composed of a large number of periodically arranged nano-pillar structures, the material of the nano-pillars is silicon, and the beam deflection is achieved by the size and periodic arrangement of the nano-pillars, and the base material of the beam deflector 532 is glass.

[0083] like Figure 5 , Figure 7 , Fig.10 , Fig.12 , Fig.14 and Fig.16 As shown, in the optical sensing device provided by the present application, the transmitting module 3 includes a transmitting light source 31 and a transmitting lens group 32 .

[0084] The emitting light source 31 is mounted on the circuit board 11, and the emitting light source 31 is electrically connected to the driving element 6; the top plate 121 is provided with a first opening 1211, the first opening 1211 is connected to the light inlet area 141, the emitting lens group 32 is mounted on the first opening 1211, and the emitting lens group 32 and the emitting light source 31 are arranged opposite to each other along the direction from the top plate 121 to the circuit board 11. The emitting light source 31 is used to emit an optical signal that can be received by the receiving module 4, and the emitting lens group 32 is used to improve the transmission effect of the optical signal to the outside of the housing 1.

[0085] like Figure 5 , Figure 7 , Fig.10 , Fig.12 , Fig.14 and Fig.16 As shown, in the optical sensing device provided by the present application, the receiving module 4 includes a receiving photosensitive element 41 and a receiving lens group 42 .

[0086] The receiving photosensitive element 41 is mounted on the circuit board 11; a second opening 1212 is provided on the top plate 121, and a receiving lens group 42 is mounted on the second opening 1212. The second opening 1212 is communicated with the second chamber 14, and the receiving lens group 42 and the receiving photosensitive element 41 are arranged opposite to each other along the direction from the top plate 121 to the circuit board 11. The optical signal emitted by the transmitting module 3 enters the interior of the housing 1 through the receiving lens group 42 and is transmitted to the receiving photosensitive element 41. The transmission effect of the optical signal can be improved by setting the receiving lens group 42.

[0087] Alternatively, if Fig.18 and Fig.19 As shown, a filter 9 is provided at the second opening 1212 . By providing the filter 9 , stray light can be effectively filtered.

[0088] like Figure 3 , Figure 5 , Figure 7 , Fig.10 , Fig.12 , Fig.14 and Fig.16 As shown, the optical sensing device provided by the present application includes a photosensitive sensor 7, which is installed on a circuit board 11. The photosensitive sensor 7 has a first photosensitive area and a second photosensitive area that are spaced apart. The first photosensitive area is located in the light-entering area 141, and the first photosensitive area is arranged opposite to the second opening 1212 and serves as a receiving photosensitive element 41. The second photosensitive area is located in the light-shielding area 142, and the second photosensitive area is staggered with the second opening 1212 and serves as a calibration photosensitive element 52. In this way, by setting a photosensitive sensor 7 to realize the functions of the calibration photosensitive element 52 and the receiving photosensitive element 41, it is beneficial to improve the integration of the optical sensing device and simplify the assembly steps.

[0089] like Figure 3 , Figure 5 , Figure 7 , Fig.10 , Fig.12 , Fig.14 and Fig.16 As shown, the optical sensing device provided by the present application further includes a second baffle plate 8, which is fixedly connected to the top plate 121 and the peripheral wall 122 respectively, and the side of the second baffle plate 8 away from the first baffle plate 2 is a light-entering area 141, and the area between the second baffle plate 8 and the first baffle plate 2 is a light-shielding area 142; along the direction from the top plate 121 to the circuit board 11, the projection of the second baffle plate 8 is located between the receiving photosensitive element 41 and the calibration photosensitive element 52, so as to block the light signal emitted by the calibration light source 51, on the one hand to reduce the loss of the light signal, and on the other hand to prevent the light signal from interfering with the receiving sensing element.

[0090] Optionally, a gap of 50 μm to 80 μm is formed between the second baffle plate 8 and the photosensitive sensor 7 to prevent the second baffle plate 8 from contacting the photosensitive sensor 7 and damaging the photosensitive sensor 7 during assembly.

[0091] Optionally, the calibration light source 51 may be an infrared diode. Since the infrared diode has a large light emission angle, a second baffle 8 needs to be provided to reduce the propagation of the light signal emitted by the infrared diode to the receiving sensing element.

[0092] Optionally, the calibration light source 51 may be a vertical cavity surface emitter (Vertical Cavity Surface Emitting Laser, VCSEL). Since the light emission angle of the vertical cavity surface emitter is relatively concentrated, the second baffle 8 may be omitted in this case.

[0093] The present application also provides an electronic device, wherein the electronic device comprises a power supply and the optical sensing device as described above. The power supply provides electrical energy to the optical sensing device to ensure smooth operation of the optical sensing device.

[0094] The electronic device provided in the present application has an optical sensing device which is provided with a calibration module 5 including a calibration light source 51 and a calibration photosensitive element 52. The calibration photosensitive element 52 senses the light emitted by the calibration light source 51, and can calculate the time between the power-on time of the calibration light source 51 and the emission of the calibration light signal, so as to calibrate the measurement result when the receiving module 4 senses the light signal as calibration data. Since the calibration module 5 is arranged in the light-shielding area 142 of the second chamber 14, the influence of stray light in the surrounding environment on the calibration data can be effectively reduced, thereby improving the detection precision and accuracy.

[0095] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0096] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "middle", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0097] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0098] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. An optical sensing device, characterized in that: The optical sensing device comprises: A housing, wherein a first chamber and a second chamber are provided independently of each other, and a light-incoming area and a light-shielding area are formed inside the second chamber; A driving element, installed inside the first chamber or the second chamber; a transmitting module, at least partially installed inside the first chamber, the transmitting module being electrically connected to the driving element, and the driving element being used to drive the transmitting module to emit a sensing light signal; a receiving module, at least partially installed inside the second chamber and located in the light-entering area, the receiving module being used to receive the sensing light signal; A calibration module is installed inside the second chamber and located in the light-shielding area; the calibration module includes a calibration light source and a calibration photosensitive element that are arranged at intervals, the calibration light source is electrically connected to the driving element, and the driving element is used to drive the calibration light source to emit a calibration light signal; the calibration photosensitive element is used to receive the calibration light signal.

2. The optical sensing device according to claim 1, wherein: The housing comprises: A circuit board, on which the transmitting module, the receiving module, the calibration light source, the calibration photosensitive element and the driving element are all mounted; A top cover having a top plate and a peripheral wall connected thereto, wherein the top plate is arranged opposite to the circuit board, and the peripheral wall is connected to the circuit board at an edge away from the top plate; The first baffle is fixedly connected to the top plate and the peripheral wall respectively, and the first baffle is in contact with the circuit board. The interior of the shell is divided by the first baffle to form the first chamber and the second chamber.

3. The optical sensing device according to claim 2, wherein: The calibration module also includes: A reflective structure is disposed on the top plate, and along a direction from the top plate to the circuit board, at least a portion of the projection of the calibration light source and at least a portion of the projection of the calibration photosensitive element overlap with the projection of the reflective structure.

4. The optical sensing device according to claim 3, wherein: Along the direction in which the calibration light source and the calibration photosensitive element are spaced apart, a size of the reflective structure is greater than or equal to a center distance between the calibration light source and the calibration photosensitive element.

5. The optical sensing device according to claim 3, wherein: The reflective structure comprises a reflective groove recessed on the top plate, and a notch of the reflective groove faces the circuit board.

6. The optical sensing device according to claim 5, wherein: The reflective groove is a trapezoidal groove that gradually expands from its bottom to its groove mouth, and the trapezoidal groove includes a first reflective surface, a second reflective surface and a third reflective surface. The second reflective surface is connected between the first reflective surface and the third reflective surface. The second reflective surface is parallel to the circuit board. Along the direction from the top plate to the circuit board, the distance between the first reflective surface and the second reflective surface gradually increases.

7. The optical sensing device according to claim 6, wherein: An included angle of 10° to 30° is formed between the first reflecting surface and the circuit board, and between the second reflecting surface and the circuit board.

8. The optical sensing device according to claim 5, wherein: The reflecting groove is an arc-shaped groove which gradually expands from the groove bottom to the groove mouth.

9. The optical sensing device according to any one of claims 6 to 8, characterized in that: The reflective structure further comprises: A reflective film is covered on the wall of the reflective groove; Or, a beam deflector is embedded inside the reflecting groove.

10. The optical sensing device according to claim 2, wherein: The transmitting module comprises: An emitting light source is mounted on the circuit board, and the emitting light source is electrically connected to the driving element; An emitting lens group, wherein a first opening is provided on the top plate, the first opening is connected to the light inlet area, the emitting lens group is installed on the first opening, and the emitting lens group and the emitting light source are arranged opposite to each other along the direction from the top plate to the circuit board.

11. The optical sensing device according to claim 2, wherein: The receiving module comprises: A receiving photosensitive element mounted on the circuit board; A receiving lens group, a second opening is provided on the top plate, the second opening is communicated with the first chamber, the receiving lens group is installed on the second opening, and the receiving lens group and the receiving photosensitive element are arranged opposite to each other along the direction from the top plate to the circuit board.

12. The optical sensing device according to claim 11, wherein: The optical sensing device includes a photosensor installed on the circuit board, the photosensor having a first photosensing area and a second photosensing area spaced apart from each other, the first photosensing area being located in the light-entering area and being arranged opposite to the second opening and serving as the receiving photosensing element, the second photosensing area being located in the light-shielding area and being staggered from the second opening and serving as a calibration photosensing element.

13. The optical sensing device according to claim 12, wherein: The optical sensing device also includes a second baffle, which is fixedly connected to the top plate and the surrounding wall respectively, the side of the second baffle away from the first baffle is the light-incoming area, and the area between the second baffle and the first baffle is the light-shielding area; along the direction from the top plate to the circuit board, the projection of the second baffle is located between the receiving photosensitive element and the calibration photosensitive element, and a gap of 50μm to 80μm is formed between the second baffle and the photosensitive sensor.

14. An electronic device, characterized in that: The electronic device comprises a power source and the optical sensing device according to any one of claims 1 to 13.

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