Light sensing module

Abstract

The invention relates to a light sensing module which comprises an additional circuit board, at least one movable device, at least one light emitting unit and at least one light sensing unit. The light emitting unit is used for generating detection light, and the detection light is used for being projected to a detected body and generating diffuse reflection light. The movable device is arranged on the additional circuit board, the light emitting unit is arranged on the movable device, and the movable device is used for driving the light emitting unit to move relative to the additional circuit board and projecting the generated detection light to different areas of the detected body. The light sensing unit is used for receiving the diffuse reflection light of different areas, the multiple diffuse reflection light received by the light sensing unit can be further analyzed, one diffuse reflection light is found out for operation, and therefore the accuracy of the physiological parameters detected by the light sensing module is improved.

Description

Technical Field

[0001] The present invention relates to a light sensing module which can quickly and accurately measure the physiological parameters of a subject in a non-invasive manner. Background Art

[0002] As people pay more attention to health awareness, many wearable devices for measuring users' physiological parameters have appeared on the market, such as smart watches, smart bracelets or smart collars, etc. The above-mentioned wearable devices can be used to measure and record the user's blood pressure, blood oxygen, heart rate, blood sugar and / or body temperature and other physiological parameters, and can be used to store the measured physiological parameter data, or transmit the measured physiological parameter data to a smart phone for storage, so as to monitor the user's health status for a long time, which is helpful for doctors to understand the user's physiological status.

[0003] When the user's physiological parameters are abnormal, the wearable device or smart phone can also send out a warning signal, or transmit the warning information to relevant contact persons, such as medical staff, through the network to reduce the risk of accidents for the user.

[0004] Although wearable devices have advantages such as light weight and small size, and are convenient for users to wear for a long time, the wearable devices currently on the market generally have the problem of inaccurately measuring physiological parameters.

[0005] Specifically, the wearable device mainly projects a detection light onto the skin of the user (test subject) through a light-emitting unit, so that the detection light enters the bottom layer of the skin and projects onto the blood vessels. Then, a light sensing unit senses the diffusely reflected light reflected and scattered by the blood vessels to know how much of the spectrum is absorbed, reflected or refracted, and uses an algorithm to calculate the user's physiological parameters.

[0006] However, when the detection light fails to project to the main blood vessels at the bottom layer of the skin, it often causes errors in the measured physiological parameters, thereby reducing the accuracy of judging the user's physical condition. Summary of the invention

[0007] To this end, the present invention proposes a light sensing module that can project the generated detection light to different areas of the subject and find a more accurate diffuse reflection light for calculation, so as to improve the accuracy of the physiological parameters measured by the light sensing module.

[0008] One object of the present invention is to provide a light sensing module, which mainly includes an additional circuit board, a movable device, a light emitting unit and a light sensing unit, wherein the light emitting unit and / or the light sensing unit are arranged on the movable device. The movable device can be used to drive the light emitting unit and / or the light sensing unit to move relative to the additional circuit board, so that the detection light generated by the light emitting unit can be projected to different areas of the subject, and the different areas can be measured respectively, which is conducive to improving the accuracy of the measured physiological parameters.

[0009] In order to achieve the above-mentioned purpose, the present invention provides a light sensing module, including: an additional circuit board; at least one light emitting unit, used to generate a detection light, wherein the detection light is used to project onto a test object and generate a diffuse reflection light; at least one movable device, arranged on the additional circuit board, including a slide rail and a slide seat, the slide seat can be displaced along the slide rail, and the light emitting unit is arranged on the slide seat, the movable device is used to drive the light emitting unit to move relative to the additional circuit board, thereby changing the detection light to be projected to different positions of the test object; and at least one light sensing unit, used to receive the diffuse reflection light.

[0010] In at least one embodiment of the optical sensing module described in the present invention, the optical sensing unit is disposed on a slide seat of a movable device so that the light emitting unit and the optical sensing unit maintain the same distance, and the movable device is used to drive the light emitting unit and the optical sensing unit to move relative to the additional circuit board.

[0011] In at least one embodiment of the optical sensing module of the present invention, the optical sensing unit is disposed at a fixed position on the additional circuit board, and the movable device is used to drive the light emitting unit to move relative to the optical sensing unit on the additional circuit board, thereby changing the distance between the light emitting unit and the optical sensing unit.

[0012] In at least one embodiment of the optical sensor module of the present invention, the slide rail is in the form of a straight line, an arc, a ring, a portion of a ring or a combination thereof.

[0013] In at least one embodiment of the optical sensing module of the present invention, the light emitting unit includes a plurality of light sources with different wavelengths.

[0014] In at least one embodiment of the optical sensing module of the present invention, the slide is connected to a driving unit, and the driving unit can drive the slide to a plurality of specific positions of the slide rail.

[0015] At least one embodiment of the light sensing module of the present invention comprises a blocking wall disposed between the light emitting unit and the light sensing unit to block the detection light generated by the light emitting unit from directly irradiating the light sensing unit.

[0016] In at least one embodiment of the optical sensor module of the present invention, the additional circuit board is a planar additional circuit board or a non-planar additional circuit board.

[0017] The present invention provides another optical sensing module, comprising: an additional circuit board; at least one light emitting unit for generating a detection light, wherein the detection light is used to project onto a test object and generate a diffusely reflected light; at least one optical sensing unit for receiving the diffusely reflected light; and a first movable device, disposed on the additional circuit board, comprising a first slide rail and a first slide seat, the first slide seat can be displaced along the first slide rail, and the optical sensing unit is disposed on the first slide seat, the first slide seat is used to drive the optical sensing unit to displace relative to the additional circuit board, thereby changing the optical sensing unit to receive the diffusely reflected light from different positions of the test object.

[0018] In at least one embodiment of the optical sensing module of the present invention, the light emitting unit is disposed on the additional circuit board, and the first slide is used to drive the light sensing unit to move relative to the light emitting unit to change the distance between the light emitting unit and the light sensing unit.

[0019] In at least one embodiment of the optical sensor module of the present invention, the first slide rail is a straight line, an arc, a ring or a portion of a ring.

[0020] In at least one embodiment of the optical sensing module described in the present invention, a second movable device is arranged on the additional circuit board, including a second slide rail and a second slide seat, the second slide seat can be displaced along the second slide rail, and the light emitting unit is arranged on the second slide seat, and the light emitting unit is driven by the second slide seat to displace relative to the additional circuit board.

[0021] In at least one embodiment of the optical sensing module of the present invention, at least one driving unit is included. The driving unit is connected to the first movable device and the second movable device, and can cause the first sliding seat to move to different specific positions of the first slide rail and the second sliding seat to move to different specific positions of the second slide rail.

[0022] In at least one embodiment of the optical sensor module of the present invention, the second slide rail can be disposed around the periphery of the first slide rail.

[0023] In at least one embodiment of the optical sensor module of the present invention, the driving unit can control the first movable device and the second movable device to move relative to each other in a synchronous manner or in an asynchronous manner.

[0024] In at least one embodiment of the optical sensing module of the present invention, the driving unit includes a microprocessor for controlling the position or speed of the first movable device and the second movable device.

[0025] The optical sensing module of the present invention has the following advantages: the movable device drives the light emitting unit and / or the optical sensing unit to move, and measures different positions of the subject, so as to quickly and accurately measure and monitor the subject's physiological parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Figure 1 FIG. 4 is a schematic diagram of the structure of a wearable device with a light sensing module according to an embodiment of the present invention.

[0028] Figure 2 FIG. 4 is a schematic diagram of the structure of an optical sensing module according to an embodiment of the present invention.

[0029] Figure 3 FIG. 4 is a schematic diagram of the structure of another embodiment of the light sensing module of the present invention.

[0030] Figure 4 FIG. 4 is a schematic diagram of the structure of another embodiment of the light sensing module of the present invention.

[0031] Figure 5 FIG. 4 is a schematic diagram of the structure of another embodiment of the light sensing module of the present invention.

[0032] Figure 6 FIG. 4 is a schematic diagram of the structure of another embodiment of the light sensing module of the present invention.

[0033] Figure 7 FIG. 4 is a schematic diagram of the structure of another embodiment of the light sensing module of the present invention.

[0034] Figure 8 FIG. 4 is a schematic diagram of the structure of another embodiment of the light sensing module of the present invention.

[0035] Fig. 9 FIG. 4 is a schematic diagram of the structure of another embodiment of the light sensing module of the present invention.

[0036] Fig.10 FIG. 4 is a schematic diagram of the structure of another embodiment of the light sensing module of the present invention.

[0037] Fig.11 FIG. 4 is a side view of another embodiment of the light sensing module of the present invention.

[0038] Fig.12 FIG. 4 is a side view of another embodiment of the light sensing module of the present invention.

[0039] Fig.13 FIG. 4 is a side view of another embodiment of the light sensing module of the present invention.

[0040] Fig.14 FIG. 4 is a schematic diagram of the structure of another embodiment of a wearable device with a light sensing module according to the present invention.

[0041] Fig.15 FIG. 4 is a schematic diagram of the structure of another embodiment of a wearable device with a light sensing module according to the present invention.

[0042] Description of Reference Numerals

[0043] 10: Light sensing module

[0044] 11: Additional circuit board

[0045] 121: First position

[0046] 123: Second position

[0047] 13: Light emitting unit

[0048] 14: Retaining Wall

[0049] 15: Light sensing unit

[0050] 17: Movable device

[0051] 171: Slide rail

[0052] 173: Slide seat

[0053] 18: Power supply unit

[0054] 19: Drive unit

[0055] 20: Wearable devices

[0056] 21: Table body

[0057] 23: Strap

[0058] 30: Light sensing module

[0059] 31: Additional circuit board

[0060] 321: First position

[0061] 323: Second position

[0062] 325: Third position

[0063] 327: Fourth position

[0064] 329: Fifth position

[0065] 33: Light emitting unit

[0066] 34: Retaining Wall

[0067] 35: Light sensing unit

[0068] 37: Movable Device

[0069] 371: Slide rail

[0070] 373: Slide seat

[0071] 39: Drive unit

[0072] 40: Light sensing module

[0073] 41: Additional circuit board

[0074] 43: Light emitting unit

[0075] 44: Retaining Wall

[0076] 45: Light sensing unit

[0077] 471: First movable device

[0078] 4711: First slide rail

[0079] 4713: First slide

[0080] 473: Second movable device

[0081] 4731: Second slide rail

[0082] 4733: Second slide

[0083] 49: Drive unit

[0084] 495: Microprocessor

[0085] 50: Wearable devices

[0086] d1: first distance

[0087] d2: second distance

[0088] d3: third distance

[0089] d4: fourth distance

[0090] d5: fifth distance

[0091] X: First direction

[0092] Y: Second direction

[0093] L1: Detection light

[0094] L2: Diffuse light

[0095] L3: Detection light. DETAILED DESCRIPTION

[0096] The technical scheme in the embodiment of the present invention is described clearly and completely below in conjunction with the accompanying drawings in the embodiment of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0097] See also Figure 1 and Figure 2 , are schematic diagrams of a wearable device with a light sensing module and an embodiment of the light sensing module of the present invention. The light sensing module 10 of the present invention can be disposed in a wearable device 20, which can be, for example but not limited to, a smart watch, and the light sensing module 10 can be disposed on a body 21 of the wearable device 20.

[0098] The optical sensing module 10 includes at least one additional circuit board 11, at least one light emitting unit 13, at least one photo sensing unit (photo detector) 15 and a movable device 17, wherein the light emitting unit 13 and / or the photo sensing unit 15 are arranged on the additional circuit board 11 through the movable device 17, so that the light emitting unit 13 and / or the photo sensing unit 15 can be displaced relative to the additional circuit board 11.

[0099] The additional circuit board 11 is used to carry the movable device 17 , the light emitting unit 13 and the light sensing unit 15 . For example, the additional circuit board 11 includes but is not limited to a circuit board, a glass substrate, an organic resin substrate or a wafer.

[0100] The movable device 17 is disposed on the additional circuit board 11. In one embodiment of the present invention, the movable device 17 includes a slide rail 171 and a slide seat 173, wherein the slide seat 173 is disposed on the slide rail 171 and can move along the slide rail 171. The movable device 17 including the slide rail 171 and the slide seat 173 is only one embodiment of the present invention and is not limited to the protection scope of the present invention. For example, the movable device 17 can be a connecting rod or a mechanical arm.

[0101] In one embodiment of the present invention, Figure 2As shown, the light emitting unit 13 and the light sensing unit 15 are both disposed on the movable device 17, and the movable device 17 drives the light emitting unit 13 and the light sensing unit 15 to move relative to the additional circuit board 11. For example, the light emitting unit 13 and the light sensing unit 15 are disposed on the same slide 173, so that the light emitting unit 13 and the light sensing unit 15 maintain a fixed relative position and the same distance, and the slide 173 drives the light sensing unit 15 and the light emitting unit 13 to move along the slide rail 171. When the light emitting unit 13 and the light sensing unit 15 move relative to the additional circuit board 11 along the slide rail 171, the distance between the two will remain constant, and the physiological parameters of the subject can be calculated by applying a general algorithm.

[0102] In actual application, the light emitting unit 13 and the light sensing unit 15 can be located at the first position 121, wherein the light emitting unit 13 at the first position 121 is used to generate a detection light L1 that is projected onto a first area of ​​the detected object, such as the limbs or neck of the human body. In different embodiments, the detected object can also be an animal, plant or food other than the human body, such as meat, eggs, vegetables, etc., and the quality of the food can be detected by the light sensing device 10.

[0103] Part of the detection light L1 may be reflected or scattered by the surface of the first area of ​​the object, and part of the detection light may enter the interior of the object and be absorbed, reflected or scattered by the internal tissue of the object, such as by the blood vessels in the first area of ​​the object. The light reflected and scattered by the surface and internal tissue of the object can be defined as a diffuse reflection light L2, and the diffuse reflection light L2 of the first area can be received by the light sensing unit 15.

[0104] In addition, the light emitting unit 13 and the light sensing unit 15 can be moved to the second position 123 along the slide rail 171 via the slide 173, wherein the light emitting unit 13 at the second position 123 projects the detection light L1 to the second area of ​​the object being tested, and the light sensing unit 15 is used to receive the diffuse reflection light L2 of the second area.

[0105] The first position 121 is different from the second position 123, and the first area of ​​the object under test is also different from the second area. In other words, the present invention can make the light emitting unit 13 project the detection light L1 to different areas of the object under test through the setting of the movable device 17, and use the light sensing unit 15 to sense the diffuse reflection light L2 of different areas of the object under test.

[0106] As described in the above prior art, when the detection light fails to be projected onto the correct area of ​​the subject, such as failing to be projected onto the main blood vessels at the bottom of the skin, the measured physiological parameters may be inaccurate.

[0107] Compared with the prior art, the light emitting unit 13 and / or the light sensing unit 15 of the present invention are connected to the additional circuit board 11 through the movable device 17, and the projection area of ​​the detection light L1 generated by the light emitting unit 13 can be changed. Specifically, the light emitting unit 13 can be displaced relative to the additional circuit board 11 and the object to be tested, and the detection light L1 can be projected to different areas of the object to be tested at different times, and different diffuse reflection lights L2 of different areas of the object to be tested are received through the light sensing unit 15. Then, the multiple diffuse reflection lights L2 received by the light sensing unit 15 can be further analyzed, and a more accurate diffuse reflection light L2 can be found out, such as the diffuse reflection light L2 with the strongest intensity or the diffuse reflection light L2 with the strongest blood vessel pulsation detected, so as to improve the accuracy of the detection result.

[0108] In one embodiment of the present invention, the movable device 17 can be connected to a driving unit 19, and the driving unit 19 can drive the light emitting unit 13 and / or the light sensing unit 15 to move relative to the additional circuit board 11 and / or the object to be tested. For example, the slide 173 of the movable device 17 can be connected to a motor or a cylinder, and the motor or the cylinder can drive the slide 173 to move relative to the slide rail 171, so that the light emitting unit 13 and / or the light sensing unit 15 move along the slide rail 171.

[0109] The light emitting unit 13 and the light sensing unit 15 can be connected to a power supply unit 18, wherein the power supply unit 18 is used to provide driving power to the light emitting unit 13 and the light sensing unit 15, so that the light emitting unit 13 can generate detection light L1, and the light sensing unit 15 can be used to sense the diffuse reflection light L2. For example, the power supply unit 18 can supply power to the light emitting unit 13 and the light sensing unit 15 along the slide rail 171 of the movable device 17.

[0110] like Figure 2 As shown, the slide rail 171 of the movable device 17 may be a linear track arranged along the first direction X, and the slide seat 173 , the light emitting unit 13 and the light sensing unit 15 may be displaced along the first direction X relative to the slide rail 171 and the additional circuit board 11 .

[0111] like Figure 3 , which is a schematic diagram of another embodiment of the present invention. The slide rail 171 of the movable device 17 can be a linear track arranged along the second direction Y, wherein the second direction Y is perpendicular to the first direction X, for example, the first direction X and the second direction Y are two mutually perpendicular directions parallel to the surface of the additional circuit board 11. The slide seat 173, the light emitting unit 13 and the light sensing unit 15 can be displaced along the second direction Y relative to the slide rail 171 and the additional circuit board 11.

[0112] In another embodiment of the present invention, Figure 4As shown, the slide rail 171 of the movable device 17 can be an arc-shaped, annular or partially annular track arranged on the surface of the additional circuit board 11, wherein the light emitting unit 13 and the light sensing unit 15 are arranged on the same slide seat 173 and connected to the slide rail 171 through the slide seat 173. In practical applications, the light emitting unit 13 and the light sensing unit 15 can be displaced along the slide rail 171 to change the detection light L1 projected to different areas of the object to be detected, and the distance between the light emitting unit 13 and the light sensing unit 15 will remain unchanged during the displacement process.

[0113] In another embodiment of the present invention, Figure 5 As shown, the slide rail 171 of the (first) movable device 17 may be an arc, annular or partially annular track arranged on the surface of the additional circuit board 11, wherein the light emitting unit 13 is arranged on the slide seat 173, and the light sensing unit 15 is arranged at a fixed position on the additional circuit board 11. In practical applications, the light emitting unit 13 may be displaced along the slide rail 171, and the detection light L1 may be projected to different areas of the object under test, and the distance between the light emitting unit 13 and the light sensing unit 15 may remain unchanged during the displacement process. For example, the slide rail 171 may be annular, wherein the light emitting unit 13 is connected to the slide rail 171 through the slide seat 173, and the light sensing unit 15 is arranged on the additional circuit board 11 and located at the center of the annular slide rail 171. In different embodiments, the light sensing unit 15 may also be arranged on the slide seat 173, and the light emitting unit 13 may be arranged at the center of the annular slide rail 171.

[0114] In the drawings of the above-mentioned embodiments of the present invention, the light emitting unit 13 and / or the light sensing unit 15 will move to the first position 121 and the second position 123 along the slide rail 171, and detect and / or measure the object to be tested. In actual application, the positions where the light emitting unit 13 and / or the light sensing unit 15 move along the slide rail 171 and perform detection are not limited to two, and the detection positions can be more than two. For example, the slide 173 can drive the light emitting unit 13 and / or the light sensing unit 15 to move to any position along the slide rail 171 for measurement, and find a more accurate diffuse reflection light L2, such as the diffuse reflection light L2 with the strongest intensity or the diffuse reflection light L2 with the strongest blood vessel pulsation, to improve the accuracy of the detection result.

[0115] In another embodiment of the present invention, the light sensing module 10 may include a retaining wall 14, wherein the retaining wall 14 may be made of an opaque material and is used to separate the light emitting unit 13 and the light sensing unit 15, and to prevent the light source (such as the detection light L1) generated and emitted by the light emitting unit 13 from directly irradiating the light sensing unit 15. Figure 2 , Figure 3 and Figure 4As shown, the retaining wall 14 can be disposed on the slide 173 and surround the light emitting unit 13 and / or the light sensing unit 15 to prevent the detection light L1 generated by the light emitting unit 13 from being directly projected onto the light sensing unit 15. Figure 5 As shown, the retaining wall 14 can be disposed on the additional circuit board 11 and surround the light sensing unit 15 .

[0116] See also Figure 6 , is a schematic diagram of the structure of another embodiment of the optical sensing module of the present invention. The optical sensing module 30 described in the present invention can be arranged in a wearable device 20, and includes at least one additional circuit board 31, a light emitting unit 33, a light sensing unit 35 and a movable device 37. The light emitting unit 33 (or the light sensing unit 35) is arranged on the additional circuit board 31 through the movable device 37, and the light sensing unit 35 (or the light emitting unit 33) is arranged at a fixed position on the additional circuit board 31, so that the light emitting unit 33 or the light sensing unit 35 can be displaced relative to the additional circuit board 31, so that the distance between the light emitting unit 33 and the light sensing unit 35 can be changed to obtain the diffuse reflection light L2 data at different distances.

[0117] In this embodiment of the present invention, the light sensing unit 35 is disposed on the additional circuit board 31, and the light emitting unit 33 is disposed on the slide seat 373 of the movable device 37. The movable device 37 is used to drive the light emitting unit 33 to move relative to the light sensing unit 35 on the additional circuit board 31, and change the distance between the light emitting unit 33 and the light sensing unit 35. Specifically, the light emitting unit 33 is connected to the slide rail 371 through the slide seat 373, and the slide seat 373 drives the light emitting unit 33 to move relative to the light sensing unit 35 along the slide rail 371, so that the detection light L1 generated by the light emitting unit 33 can be projected to different areas of the object to be detected.

[0118] The movable device 37 can be connected to a driving unit 39, and the driving unit 39 drives the slide 373 and the light emitting unit 33 to move relative to the additional circuit board 31 and the light sensing unit 35 along the slide rail 371. Specifically, the driving unit 39 can drive the light emitting unit 33 to move to a plurality of specific positions, such as Figure 6 The first position 321, the second position 323, the third position 325 and / or the fourth position 327 shown, or Figure 7 The first position 321 and the fifth position 329 of .

[0119] In one embodiment of the present invention, when the blood oxygen of the subject is measured by the optical sensing module 30, the driving unit 39 can drive the light emitting unit 33 to move to the first position 321, the second position 323, the third position 325 and the fourth position 327, wherein there is a first distance d1, a second distance d2, a third distance d3 and a fourth distance d4 between the optical sensing unit 35 and the light emitting unit 33 at the first position 321, the second position 323, the third position 325 and / or the fourth position 327, respectively.

[0120] The first distance d1, the second distance d2, the third distance d3 and the fourth distance d4 are different, wherein the fourth distance d4> the third distance d3> the second distance d2> the first distance d1, for example, the first distance d1 is 6 mm, the second distance d2 is 8 mm, the third distance d3 is 10 mm and the fourth distance d4 is 14 mm. The absorption coefficient and the scattering coefficient are determined by the ratio of the diffusely reflected light L2 at different distances (d1, d2, d3, d4) to infer the blood oxygen of the subject.

[0121] In another embodiment of the present invention, when the blood sugar of the subject is measured by the optical sensing module 30, the driving unit 39 can drive the light emitting unit 33 to move to the first position 321 and the fifth position 329, wherein the optical sensing unit 35 has a first distance d1 and a fifth distance d5 with the first position 321 and the fifth position 329, respectively. The fifth distance d5 is greater than the first distance d1, for example, the fifth distance d5 is 1.5 to 2.5 times the first distance d1, so that the optical sensing module 30 of the present invention can be used in conjunction with the relevant computing device and computing method to infer the blood sugar concentration of the subject.

[0122] The first distance d1, the second distance d2, the third distance d3 and the fourth distance d4 described in the above embodiment of the present invention may be the distance between the center position of the light sensing unit 35 and the center position of the light emitting unit 33. In different embodiments, the first distance d1, the second distance d2, the third distance d3 and the fourth distance d4 may be the distance between the edge position of the light sensing unit 35 and the edge position of the light emitting unit 33. Since the above-mentioned first position 321, the second position 323, the third position 325, the fourth position 327 and the fifth position 329 are not the same, the diffuse reflected light L2 sensed by the light sensing unit 35 will also be different. In actual application, the position of the light emitting unit 33 can be adjusted by the driving unit 39 according to the measurement method of the light sensing module 30 and the measured physiological parameters.

[0123] The above-mentioned driving unit 39 to drive the light emitting unit 33 to move to the first position 321, the second position 323, the third position 325, the fourth position 327 and the fifth position 329 is only an embodiment of the present invention and is not limited to the protection scope of the present invention. In actual application, the position of the light emitting unit 33 can be adjusted along the slide rail 371 according to the measurement method, the type of physiological parameter measured and / or the intensity of the diffuse reflection light L2 received by the light sensing unit 35, which is conducive to improving the accuracy of the measurement.

[0124] like Figure 6 As shown, the slide rail 371 of the (first) movable device 37 may be a linear track arranged along the first direction X, and the slide seat 373 and the light emitting unit 33 may be displaced along the first direction X relative to the slide rail 371 and the additional circuit board 31 .

[0125] In another embodiment of the present invention, the light sensing module 30 may include a retaining wall 34, wherein the retaining wall 34 may be disposed on the additional circuit board 31, for example, the retaining wall 34 may be made of an opaque material and located between the light emitting unit 33 and the light sensing unit 35. The retaining wall 34 may be disposed between the light emitting unit 33 and the movable device 37, and may prevent the light source of the light emitting unit 33 from directly irradiating the light sensing unit 35.

[0126] like Figure 8 As shown, a schematic diagram of the structure of another embodiment of the present invention. The slide rail 371 of the movable device 37 can be a linear track arranged along the second direction Y, wherein the second direction Y is perpendicular to the first direction X, for example, the first direction X and the second direction Y are two mutually perpendicular directions parallel to the surface of the additional circuit board 31. The slide seat 373 and the light emitting unit 33 can be displaced along the second direction Y relative to the slide rail 371 and the additional circuit board 31. In addition, a plurality of light emitting units 33 can be arranged on the slide seat 373 of the movable device 37, for example, each light emitting unit 33 on the slide seat 373 can respectively generate detection light L1 and detection light L3 with different wavelength distributions or different light intensities.

[0127] In another embodiment of the present invention, Fig. 9 As shown, the slide rail 371 of the movable device 37 can be an arc, annular or partially annular track arranged on the surface of the additional circuit board 31, wherein the light emitting unit 33 is arranged on the slide seat 373, and the light sensing unit 35 is arranged on the additional circuit board 31. In practical application, the light emitting unit 33 can be displaced along the slide rail 371 and change the area where the detection light L1 is projected to the object to be detected. During the displacement process, the distance between the light emitting unit 33 and the light sensing unit 35 will change accordingly. The retaining wall 34 can be arranged around the light sensing unit 35.

[0128] See also Fig.10, is a schematic diagram of another embodiment of the optical sensing module of the present invention. The optical sensing module 40 of the present invention can be disposed in a wearable device 20, and includes at least one additional circuit board 41, a light emitting unit 43, a light sensing unit 45, a first movable device 471 and a second movable device 473, wherein the light sensing unit 45 is disposed in the first movable device 471, and the light emitting unit 43 is disposed in the second movable device 473.

[0129] The structures of the first movable device 471 and the second movable device 473 are similar to the movable device 17 / 37 of the aforementioned embodiment, and are disposed on the additional circuit board 41. For example, the first movable device 471 includes a first slide rail 4711 and a first slide seat 4713, and the second movable device 473 includes a second slide rail 4731 and a second slide seat 4733. The first movable device 471 and the second movable device 473 are respectively used to drive the light sensing unit 45 and the light emitting unit 43 to move relative to the additional circuit board 41, and change the distance between the light emitting unit 43 and the light sensing unit 45. For example, the first slide seat 4713 can drive the light sensing unit 45 to move relative to the additional circuit board 41, and thereby change the light sensing unit 45 to receive the diffuse reflected light L2 from different positions of the subject. In this way, the detection of the diffuse reflected light L2 at different depths of the subject's tissue can be achieved to improve the accuracy and comprehensiveness of the measurement.

[0130] In the icon of the present invention, the first movable device 471 and the second movable device 473 are annular and have different sizes. For example, the first movable device 471 can be located on the inner side of the second movable device 473. Of course, the first movable device 471 can also be located on the outer side of the second movable device 473. In other words, the second slide rail 4731 is arranged around the periphery of the first slide rail 4711. For example, but not limited to, the first movable device 471 and the second movable device 473 can be a concentric circle structure, a concentric ellipse structure or a concentric ring structure. In addition, an annular retaining wall 44 can be arranged between the first movable device 471 and the second movable device 473. The first movable device 471 and the second movable device 473 are annular only in one embodiment of the present invention and are not limited to the scope of protection of the present invention. In different embodiments, the first movable device 471 and the second movable device 473 can be other geometric shapes, such as a straight line, an arc, a part of annular or one of the combinations of the above geometric shapes.

[0131] In another embodiment of the present invention, the second slide rail 4731 is arranged around the periphery of the first slide rail 4711, or the first slide rail 4711 is arranged around the periphery of the second slide rail 4731, and a spherical scanning structure can be formed, so that the light emitting unit 43 and the light sensing unit 45 can move relative to each other in three-dimensional space, thereby realizing all-round scanning or detection of a test object.

[0132] In another embodiment of the present invention, at least one driving unit 49 can be connected to the first movable device 471 and the second movable device 473 respectively, and can drive the first movable device 471 and the second movable device 473 to move synchronously or asynchronously relative to each other, thereby achieving a full-dimensional scanning of a subject in space.

[0133] In another embodiment of the present invention, the driving unit 49 includes a microprocessor 495, which can control the position and / or displacement speed of the first movable device 471 and the second movable device 473, thereby realizing intelligent scanning and detection of a test object.

[0134] In the present invention Figure 6 , Figure 7 , Figure 8 and Fig. 9 In the embodiment, the light emitting unit 33 is mainly disposed on the movable device 37, and the light sensing unit 35 is disposed on the additional circuit board 31. In different embodiments, the light sensing unit 35 can be disposed on the movable device 37, and the light emitting unit 33 can be disposed on the additional circuit board 31. Similarly, the movable device 37 can drive the light sensing unit 35 to move relative to the additional circuit board 31 and / or the light emitting unit 33 to change the distance between the light emitting unit 33 and the light sensing unit 35.

[0135] In order to illustrate the convenience of the present invention, the present invention Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Fig. 9 and Fig.10 In the embodiment of the embodiment, only one light emitting unit 13 / 33 / 43 and one light sensing unit 15 / 35 / 45 are shown, and the description is made with a single light emitting unit 13 / 33 / 43 and a single light sensing unit 15 / 35 / 45. In different embodiments, the number of light emitting units 13 / 33 / 43 and light sensing units 15 / 35 / 45 can be multiple, for example, multiple light emitting units 13 / 33 / 43 and / or multiple light sensing units 15 / 35 / 45 can be arranged on the additional circuit board 11 / 31 / 41 or the slide 173 / 373.

[0136] When the light sensing module 10 / 30 / 40 has multiple light emitting units 13 / 33 / 43, each light emitting unit 13 / 33 / 43 can be used to generate detection lights L1 and L3 with different wavelength distributions or different light intensities. The light source of the light emitting unit 13 / 33 / 43 can be but is not limited to a light emitting diode, and the detection light L1 is a stable light with a wavelength between 600 and 1100nm.

[0137] In addition, in different embodiments of the present invention, the light source of the light emitting unit 13 / 33 / 43 may be a plurality of micro light emitting diodes (Micro LEDs), wherein each micro LED may also generate detection light L1 with different wavelength distributions.

[0138] In another embodiment of the present invention, the light emitting unit 13 / 33 / 43 can be a single light emitting diode, and the power supply unit 18 can provide driving currents of different sizes to the light emitting unit 13 / 33 / 43, so that the light emitting unit 13 / 33 / 43 generates detection lights L1, L3 with different wavelength distributions or different light intensities.

[0139] In the embodiment of the present invention, the driving unit 19 / 39 can be an electric device such as a stepping motor, or a mechanical driving device that does not require electricity, such as but not limited to a gear and lever system, a gravity driving system, etc. The driving unit 19 / 39 can not only drive the slide 173 to move at multiple specific positions of the slide rail 171, but also control and drive the slide 173 to move at different speeds.

[0140] In different embodiments of the present invention, at least one driving unit 19 / 39 may be provided. For example, a single driving unit 19 / 39 may simultaneously or sequentially control the displacement of different positions of the first slide 4713 and / or the second slide 4733. Of course, if the driving units 19 / 39 are two independent ones, they may be electrically connected to the first movable device 471 or the second movable device 473 independently, and drive the displacement of the first slide 4713 or the second slide 4733 independently according to the design.

[0141] like Figure 1 As shown, the wearable device 20 is a smart watch, and the light sensing module 10 (30 / 40) is disposed on the watch body 21 of the watch and is used to project the detection light L1 onto the wrist of the subject. The wearable device 20 may include at least one processor, at least one memory or at least one wireless transmission chip (such as a Bluetooth chip), wherein the processor, memory or wireless transmission chip may be disposed on the additional circuit board 11 / 31 / 41.

[0142] The processor of the wearable device can convert the diffuse reflection light L2 signal received by the optical sensing module 10 / 30 / 40 into optical parameters, such as absorption coefficient and scattering coefficient, and calculate the absorption coefficient and scattering coefficient to infer the physiological parameters of the subject, such as blood sugar concentration, blood oxygen, etc. The detailed calculation method has been disclosed in the relevant prior art and is generally understood and implementable by those skilled in the art, and the calculation method is not a technical feature of the present invention, so it will not be described in detail here.

[0143] In one embodiment of the present invention, the processor, memory, wireless transmission chip, light sensing module 10 / 30 / 40, driving unit 19 / 39 and / or power supply unit 18 of the wearable device 20 can be integrated on the same carrier board and packaged together to form a co-packaged device (CPO, Co-Package Optics).

[0144] See also Fig.11 In one embodiment of the present invention, the additional circuit board 11 of the optical sensor module 10 is a planar additional circuit board. Figure 2 or Figure 3 , the slide rails 171 of the movable device 17 are all on the same horizontal plane or the same vertical plane, so the slide seat 173, the light emitting unit 13, the light sensing unit 15, the first position 121 and the second position 123 are all on the same plane.

[0145] In another embodiment of the present invention, the additional circuit board 11 of the optical sensor module 10 is a non-planar additional circuit board, such as but not limited to a concave shape, a concave-convex shape, a step shape or a non-planar shape. Fig.12 The slide rail 171 of the movable device 17 will be installed along with the non-horizontal surface or non-vertical surface of the non-planar additional circuit board 11. In other words, the first position 121 and the second position 123 will not be in the same horizontal plane or in the same vertical plane. The light emitting unit 13 and the light sensing unit 15 on the slide 173 can move relatively in three-dimensional space, and the distance from a test object has different changes in three-dimensional space, thereby realizing all-round detection of a non-planar or curved test object.

[0146] See also Fig.13 , which is a schematic diagram of another embodiment of the present invention. The additional circuit board 11 of the optical sensing module 10 is a non-planar additional circuit board, and the slide rail 171 of the movable device 17 will be installed along with the non-horizontal surface or non-vertical surface of the non-planar additional circuit board 11. The light emitting unit 13 (or the optical sensing unit 15) installed on the slide seat 173 will move to the first position 121 and the second position 123 on different horizontal planes or different vertical planes along with the non-planar slide rail 171, while the optical sensing unit 15 (or the light emitting unit 13) is set at the same fixed position of the additional circuit board 11. In this way, all-round detection of non-planar or curved objects can also be achieved.

[0147] In practical applications, such as Fig.14 As shown, the optical sensing module 10 / 30 / 40 can be disposed on the strap 23 of the smart watch, and can also project the detection light L1 to the wrist of the subject and receive the diffuse reflection light L2. Fig.15As shown, the optical sensing module 10 / 30 / 40 can be disposed on a wearable device 50 and can project the detection light L1 onto the neck of the subject. For example, the wearable device 50 can be a collar.

[0148] In one embodiment of the present invention, the additional circuit board 11 / 31 / 41 can be connected to another movable device (not shown) to drive the additional circuit board 11 / 31 / 41, the light emitting unit 13 / 33 / 43 and the light sensing unit 15 / 35 / 45 to move in a direction perpendicular to the first direction X and the second direction Y to change the distance between the additional circuit board 11 / 31 / 41, the light emitting unit 13 / 33 / 43 and the light sensing unit 15 / 35 / 45 and the object under test.

[0149] In another embodiment of the present invention, the optical sensing module 10 / 30 / 40 can be manufactured by silicon photonics process. For example, the processor, memory, wireless transmission chip, optical sensing module 10 / 30 / 40, driving unit 19 / 39 and / or power supply unit 18 of the wearable device 20 / 50 can be arranged on the same wafer substrate to form a silicon photonic structure. Through common packaging and silicon photonics process technology, it will be helpful to reduce the size of the optical sensing module 10 / 30 / 40, reduce the power consumption of the wearable device 20 / 50 and increase the transmission speed.

[0150] The above-mentioned contents are only a preferred embodiment of the present invention and are not used to limit the protection scope of the present invention. That is, all equivalent changes and modifications based on the shape, structure, characteristics and spirit of the present invention should fall within the protection scope of the present invention.

Claims

1. A light sensing module, characterized in that: include: an additional circuit board; At least one light emitting unit, used for generating a detection light, wherein the detection light is used for projecting onto a detected object and generating a diffuse reflection light; at least one movable device, disposed on the additional circuit board, including a slide rail and a slide seat, the slide seat can be displaced along the slide rail, and the light emitting unit is disposed on the slide seat, the movable device is used to drive the light emitting unit to displace relative to the additional circuit board, thereby changing the detection light projected to different positions of the detected object; and At least one light sensing unit is used to receive the diffusely reflected light.

2. The optical sensor module according to claim 1, wherein: The light sensing unit is arranged on the slide seat of the movable device to keep the same distance between the light emitting unit and the light sensing unit, and the movable device is used to drive the light emitting unit and the light sensing unit to move relative to the additional circuit board.

3. The optical sensor module according to claim 1, wherein: The light sensing unit is arranged at a fixed position of the additional circuit board, and the movable device is used to drive the light emitting unit to move relative to the light sensing unit on the additional circuit board, thereby changing the distance between the light emitting unit and the light sensing unit.

4. The optical sensor module according to claim 1, wherein: The slide rail is in the form of a straight line, an arc, a ring, a part of a ring or a combination thereof.

5. The optical sensor module according to claim 1, wherein: The light emitting unit includes a plurality of light sources having different wavelengths.

6. The optical sensor module according to claim 1, wherein: The slide is connected to a driving unit, and the driving unit drives the slide to a plurality of specific positions of the slide rail.

7. The optical sensor module according to claim 1, wherein: The invention comprises a blocking wall, which is arranged between the light emitting unit and the light sensing unit and is used for blocking the detection light generated by the light emitting unit from directly irradiating the light sensing unit.

8. The optical sensor module according to claim 1, wherein: The additional circuit board is a planar additional circuit board or a non-planar additional circuit board.

9. A light sensing module, comprising: an additional circuit board; At least one light emitting unit, used to generate a detection light, wherein the detection light is used to project onto a detected object and generate a diffuse reflection light; at least one light sensing unit, configured to receive the diffusely reflected light; and A first movable device is arranged on the additional circuit board, including a first slide rail and a first slide seat. The first slide seat is displaced along the first slide rail, and the light sensing unit is arranged on the first slide seat of the first movable device. The first slide seat is used to drive the light sensing unit to move relative to the additional circuit board, thereby changing the light sensing unit to receive the diffuse reflected light from different positions of the object being tested.

10. The optical sensor module according to claim 9, wherein: The light emitting unit is arranged on the additional circuit board, and the first sliding seat is used to drive the light sensing unit to generate displacement relative to the light emitting unit so as to change the distance between the light emitting unit and the light sensing unit.

11. The optical sensor module according to claim 9, wherein: The first slide rail is in the form of a straight line, an arc, a ring, a part of a ring or a combination thereof.

12. The optical sensor module according to claim 9, wherein: It includes a second movable device arranged on the additional circuit board, including a second slide rail and a second slide seat, the second slide seat is displaced along the second slide rail, and the light emitting unit is arranged on the second slide seat of the second movable device, and the light emitting unit is driven to displace relative to the additional circuit board through the second slide seat.

13. The optical sensor module according to claim 12, wherein: The invention comprises at least one driving unit, which is connected with the first movable device and the second movable device and is used for moving the first sliding seat to different specific positions of the first sliding rail and the second sliding seat to different specific positions of the second sliding rail.

14. The optical sensor module according to claim 13, wherein: The driving unit can control the first movable device and the second movable device to move relative to each other in a synchronous manner or in an asynchronous manner.

15. The optical sensor module according to claim 13, wherein: The driving unit includes a microprocessor for controlling the position or speed of the first movable device and the second movable device.

16. The optical sensor module according to claim 9, wherein: The invention comprises a blocking wall, which is arranged between the light emitting unit and the light sensing unit and is used for blocking the detection light generated by the light emitting unit from directly irradiating the light sensing unit.

17. The optical sensor module according to claim 12, wherein: The second slide rail can be arranged around the periphery of the first slide rail.

18. The optical sensor module according to claim 9, wherein: The additional circuit board is a planar additional circuit board or a non-planar additional circuit board.

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