Optical sensing system and optical shutter layer

Abstract

The invention discloses an optical sensing system and an optical shutter layer. The optical sensing system includes a first optical sensor. The first optical sensor comprises a first pixel array and a first optical gate layer. The first optical shutter layer is used for receiving first input light and providing first receiving light to the first pixel array, so that the first optical sensor has a plurality of photosensitivities. The light sensitivity of the sensor area or the optical sensor can be set through the structure of the optical shutter layer. In addition, the optical sensor can have different photosensitivities, and the photosensitivities of the sensor area or the optical sensor can be set according to different requirements.

Description

Technical Field

[0001] The present invention relates to an optical sensing system and a light shutter layer, and in particular to an optical sensing system comprising an optical sensor having at least one photosensitivity (adjustable by a light shutter layer) and a light shutter layer of the optical sensing system. Background Art

[0002] Conventional optical sensors sense optical data for tracking or detecting objects. If an optical sensor is close to a light source or receives strong light, the sensing signal generated by the optical sensor may be saturated. However, optical sensors always have only a fixed light sensitivity, so it is difficult to improve this problem. Summary of the invention

[0003] An object of the present invention is to disclose an optical sensor having at least two different photosensitivity.

[0004] An object of the present invention is to disclose an optical sensor having at least two different photosensitivity through multiple polarizing layers.

[0005] An object of the present invention is to disclose a light shutter layer with multiple polarizing layers.

[0006] An embodiment of the present invention discloses an optical sensing system, including a first optical sensor. The first optical sensor includes: a first pixel array; and a first light shutter layer, which is used to receive a first input light and provide a first received light to the first pixel array, so that the first optical sensor has multiple light sensitivities.

[0007] Another embodiment of the present invention discloses an optical sensing system, including a first optical sensor. The first optical sensor includes a first pixel array and a first shutter layer. The first shutter layer is used to receive a first input light and to provide a first received light to the first pixel array, including: a first polarizing layer, including a plurality of first polarizing strips, each of the plurality of first polarizing strips includes a first width and a first length, and different first polarizing strips in the plurality of first polarizing strips are separated by a first distance; and a second polarizing layer, including a plurality of second polarizing strips, each of the plurality of second polarizing strips includes a second width and a second length, and different second polarizing strips in the plurality of second polarizing strips are separated by a second distance.

[0008] Another embodiment of the present invention discloses a light shutter layer, comprising: a first polarizing layer, comprising a plurality of first polarizing strips, each of the plurality of first polarizing strips comprising a first width and a first length, and different first polarizing strips among the plurality of first polarizing strips are separated by a first distance; and a second polarizing layer, comprising a plurality of second polarizing strips, each of the plurality of second polarizing strips comprising a second width and a second length, and different second polarizing strips among the plurality of second polarizing strips are separated by a second distance.

[0009] According to the above embodiments, the light sensitivity of the sensor area or the optical sensor can be set by the structure of the light shutter layer. In addition, the optical sensor can have different light sensitivities, and the light sensitivity of the sensor area or the optical sensor can be set according to different requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram of a first optical sensor according to an embodiment of the present invention is shown.

[0011] Figure 2 According to an embodiment of the present invention, Figure 1 Schematic diagram of the detailed structure of the first polarizing layer and the second polarizing layer.

[0012] Figure 3 for Figure 2 Exploded diagram of .

[0013] Figure 4 FIG. 4 is a schematic diagram of optical sensors with different exposure areas according to an embodiment of the present invention.

[0014] Figure 5 FIG. 4 is a schematic diagram of optical sensors with different photosensitivity according to an embodiment of the present invention.

[0015] Figure 6 , Figure 7 as well as Figure 8 Schematic diagrams showing the distribution of photosensitivity of different sensor areas according to different embodiments of the present invention are shown.

[0016] Fig. 9 A schematic diagram of an optical sensing system including a plurality of image sensors according to an embodiment of the present invention is shown.

[0017] The reference numerals are described as follows:

[0018] 100 First Optical Sensor

[0019] 100_1 Second optical sensor

[0020] 101 first pixel array

[0021] 900 Optical Sensing System

[0022] 901 housing

[0023] D_1 First distance

[0024] L_1 first length

[0025] L_I first input light

[0026] LG_1 First light shutter layer

[0027] PA_1 First plane

[0028] PA_2 Second plane

[0029] PL_1 first polarizing layer

[0030] PL_2 Second polarizing layer

[0031] PS_11, PS_12 first polarizing strip

[0032] PS_21, PS_22 second polarizing strip

[0033] W_1 first width

[0034] L_1 first length

[0035] D_1 First distance

[0036] W_2 Second width

[0037] L_2 Second length

[0038] D_2 Second distance

[0039] LS_1, LS_2, LS_3, LS_4 photosensitivity

[0040] Lu light source

[0041] PIX_1, PIX_2, PIX_3, PIX_4 pixels

[0042] SR_1, SR_2, SR_3, SR_4, SR_5, SR_6, SR_7 sensor area DETAILED DESCRIPTION

[0043] The present invention will be described below with multiple embodiments. Please note that the "first", "second" and similar descriptions in the following description are only used to define different elements, parameters, data, signals or steps. They are not used to limit their order. For example, the first device and the second device can be different devices with the same structure.

[0044] In the following embodiments, the term "light sensitivity" is used, which represents the intensity of the response of an optical sensor to light. For example, if an optical sensor with high light sensitivity and an optical sensor with low light sensitivity receive the same amount of light, the signal intensity of the light sensing signal generated by the optical sensor with high light sensitivity (for example, the number of charges generated by the pixel) is greater than the signal intensity of the light sensing signal generated by the optical sensor with low light sensitivity. In addition, the optical sensor in each embodiment may be an image sensor.

[0045] Figure 1FIG. 1 is a schematic diagram of a first optical sensor 100 according to an embodiment of the present invention. Figure 1 As shown, the first optical sensor 100 includes a first pixel array 101 and a first light shutter layer LG_1. The first light shutter layer LG_1 is used to receive the first input light L_I and provide the first received light to the first pixel array 101 to control at least one photosensitivity of the first optical sensor 100. In other words, the first light shutter layer LG_1 blocks at least a portion of the first input light L_I to generate the first received light reaching the first pixel array 101. If the first light shutter layer LG_1 blocks most of the first input light L_I, the first optical sensor 100 has low photosensitivity. On the contrary, if the first light shutter layer LG_1 blocks a small portion of the first input light L_I, the first optical sensor 100 has high photosensitivity.

[0046] exist Figure 1 In the embodiment of the present invention, the first light shutter layer LG_1 includes a first polarizing layer PL_1 and a second polarizing layer PL_2. The light sensitivity corresponds to the structure of the first polarizing layer PL_1 and the second polarizing layer PL_2. Please note that the first light shutter layer LG_1 may include only one polarizing layer or more than two polarizing layers, and is not limited to Figure 1 In addition, Figure 1 In the embodiment of the present invention, since the light receiving surface of the first pixel array 101 is its top surface, the first light shutter layer LG_1 is disposed above the first pixel array 101. However, the position of the first light shutter layer LG_1 may be changed corresponding to the light receiving surface. For example, if the light receiving surface of the first pixel array 101 is its right side surface, the first light shutter layer LG_1 is disposed on the right side of the first pixel array 101.

[0047] exist Figure 1 In the embodiment, the first polarizing layer PL_1 includes a plurality of first polarizing strips (only two first polarizing strips PS_11 and PS_12 are used as an example), and the second polarizing layer PL_2 includes a plurality of second polarizing strips (only two second polarizing strips PS_21 and PS_22 are used as an example). In one embodiment, the first polarizing strips PS_11 and PS_12 and the second polarizing strips PS_21 and PS_22 are metal strips and are set in the same layer as the signal line of the optical sensor 100, but the present invention is not limited thereto.

[0048] In one embodiment, the first optical sensor 100 further includes a micro lens located above the first light shutter layer LG_1. The micro lens can block part of the input light L_I, and thus can also be used to control the photosensitivity of the optical sensor 100. However, the micro lens can be removed from the optical sensor 100.

[0049] The detailed structures of the first polarizing layer PL_1 and the second polarizing layer PL_2 will be described in the following embodiments. However, the first polarizing layer PL_1 and the second polarizing layer PL_2 are not limited to being implemented in an optical sensor. Figure 2 According to an embodiment of the present invention, Figure 1 Schematic diagram of the detailed structure of the first polarizing layer P_1 and the second polarizing layer P_2. In addition, Figure 3 yes Figure 2 Exploded diagram of .

[0050] like Figure 2 As shown, the second polarizing strips PS_21 and 22 are directly disposed on the first polarizing strips PS_11 and PS_12. However, in another embodiment, other layers or other materials may be disposed between the first polarizing strips PS_11 and PS_12 and the second polarizing strips PS_21 and 22. Figure 3 As shown, each of the first polarizing strips PS_11 . . . , PS_12 has a first width W_1 and a first length L_1, and the distance between the first polarizing strips PS_11 , PS_12 is a first distance D_1. Figure 3 As shown, the second polarizing strips PS_21 and PS_22 have a second width W_2 and a second length L_2, and the distance between the second polarizing strips PS_21 and PS_22 is a second distance D_2. In one embodiment, the first width W_1 and the second width W_2 may be 1 / N (e.g., 1 / 4) of the wavelength of light. In addition, the first distance D_1 and the second distance D_2 may be the same as the first width W_1 and the second width W_2.

[0051] In one embodiment, the light sensitivity of the optical sensor 100 corresponds to the first width W_1, the first length L_1, the first distance D_1, the second width W_2, the second length L_2, and the second distance D_2. In other words, the light transmittance of the first light shutter layer LG_1 corresponds to the first width W_1, the first length L_1, the first distance D_1, the second width W_2, the second length L_2, and the second distance D_2. In another embodiment, the light sensitivity of the optical sensor 100 corresponds to the first width W_1, the first length L_1, the first distance D_1, the second width W_2, the second length L_2, and the second distance D_2, and also corresponds to the angle θ between the first polarizing strips PS_11, PS_12 and the second polarizing strips PS_21, PS_22.

[0052] More specifically, in one embodiment, the first polarizers PS_11 and PS_12 are parallel to each other, and the second polarizers PS_21 and PS_22 are parallel to each other. In addition, the angle θ may be the minimum angle between the long sides of the first polarizers PS_11 and PS_12 and the long sides of the second polarizers PS_21 and PS_22. Figure 3 As shown, the first polarizers PS_11 and PS_12 are set on the first plane PA_1, and the second polarizers PS_21 and PS_22 are set on the second plane PA_2 parallel to the first plane PA_1. The photosensitivity of the optical sensor 100 corresponds to the angle θ between the projections of the first polarizers PS_11 and PS_12 and the second polarizers PS_21 and PS_22, where the projections are projected onto the first plane PA_1.

[0053] The above light sensitivity rule can be expressed by the following equation (1):

[0054] LS∝K×T 2 ×cos 2 θ Equation (1)

[0055] LS represents light sensitivity. K is a constant value, which can be set according to design requirements or the material of the polarizing strip. In one embodiment, K is 0.5. T is the transmittance of the polarizing layer, which may correspond to the width, length and distance between the polarizing strips mentioned above. According to equation (1), if the angle θ is closer to 0°, the light sensitivity LS is greater because cosθ is closer to 1. Conversely, if the angle θ is closer to 90°, the light sensitivity LS is smaller because cosθ is closer to 0. In one embodiment, the light sensitivity of the optical sensor 100 may correspond to the angle θ, but not to the width and length of the polarizing strip. For example, in one embodiment, T is fixed by setting the width and length of the polarizing strip. In this case, the light sensitivity of the optical sensor 100 may correspond to the angle θ, but not to the width and length of the polarizing strip.

[0056] As described above, the first light shutter layer LG_1 may include only one polarizing layer. For example, the first light shutter layer LG_1 includes only the first polarizing layer PL_1. In such an embodiment, the light sensitivity may correspond to the first width W_1, the first length L_1, and the first distance D_1. In addition, in such an embodiment, the light sensitivity may be expressed as the following equation (2):

[0057] LS∝K×T equation (2)

[0058] LS represents light sensitivity. K is a constant value, which can be set according to design requirements or the material of the polarizing strip. T is the transmittance of the polarizing layer, which can correspond to the width and length of the polarizing strip and the distance between the polarizing strips.

[0059] Figure 2 and Figure 3 The illustrated structure may be used in other applications and is not limited to providing at least one optical sensor with different light sensitivities.

[0060] The above θ can determine the exposed area of ​​the first pixel array 101. The exposed area refers to the total area of ​​the first pixel array 101 that is not blocked by any polarizing strip. Figure 4 A schematic diagram of an optical sensor 101 with different exposure areas according to an embodiment of the present invention is depicted. In state 1, no polarizing strip is set on the first pixel array 101, so the first pixel array 101 is not blocked and has the largest exposure area. In state 2, the first polarizing strips PS_11, PS_12 and the second polarizing strips PS_21, PS_22 are almost completely overlapped (angle θ is 0° or close to 0°), but part of the pixel array 101 is still blocked, so the exposure area in state 2 is smaller than the exposure area in state 1.

[0061] The angle θ of state 3 is greater than the angle θ of state 2, so only part of the second polarizers PS_21 and PS_22 overlap with the first polarizers PS_11 and PS_12, making the exposure area of ​​state 3 smaller than that of state 2. The angle θ of state 4 is greater than the angle θ of state 3. However, since the width, length and number of the second polarizers PS_21 and PS_22 in state 4 are almost the same as the width, length and number of the second polarizers PS_21 and PS_22 in state 3. Therefore, the exposure area in state 3 is the same as the exposure area in state 4 or has only a small difference. However, according to the above equation (1), the photosensitivity of the optical sensor 100 is different in state 3 and state 4. Therefore, according to Figure 4 In the illustrated embodiment, even if the exposure areas of the pixel arrays of the optical sensors are the same or very close, the optical sensors may have different light sensitivities.

[0062] In the above-described embodiment, the optical sensor has only one photosensitivity. However, in the present invention, the optical sensor may have more than one photosensitivity. Figure 5 FIG. 1 is a schematic diagram of an optical sensor with different photosensitivity according to an embodiment of the present invention. Figure 5 As shown, the first optical sensor 100 includes a plurality of sensor areas ( Figure 5 1 , only four sensor regions SR_1, SR_2, SR_3, and SR_4 are indicated by symbols for illustration. The sensor regions SR_1, SR_2, SR_3, and SR_4 are located at different positions of the first optical sensor 100. Each of the sensor regions SR_1, SR_2, SR_3, and SR_4 includes at least one pixel. The sensor regions SR_1, SR_2, SR_3, and SR_4 may have the same light sensitivity or different light sensitivities. For example, the sensor regions SR_1, SR_2, SR_3, and SR_4 may all have the first light sensitivity. For another example, the sensor regions SR_1 and SR_2 have the first light sensitivity, and the sensor regions SR_3 and SR_4 have the second light sensitivity.

[0063] Figure 6 , Figure 7 as well as Figure 8 Schematic diagrams of light sensitivity distribution of different sensor regions according to different embodiments of the present invention are shown. In one embodiment, the light sensitivity of pixels in each sensor region follows different regular distributions. Figure 6 As shown, both sensor regions SR_1 and SR_2 include pixels PIX_1, PIX_2, PIX_3, and PIX_4. In sensor region SR_1, pixels PIX_1, PIX_2, PIX_3, and PIX_4 include light sensitivities LS_1, LS_2, LS_3, and LS_4, respectively. However, in sensor region SR_2, pixels PIX_1, PIX_2, PIX_3, and PIX_4 include light sensitivities LS_1, LS_4, LS_2, and LS_3, respectively. Therefore, the light sensitivities of the pixels in each sensor region SR_1 and SR_2 follow different regular distributions.

[0064] In another embodiment, each sensor region has at least two different light sensitivities, and the light sensitivities of each sensor region follow the same regular distribution. Figure 6 As shown, sensor regions SR_3 and SR_4 each include pixels PIX_1, PIX_2, PIX_3, and PIX_4. In sensor region SR_3, pixels PIX_1, PIX_2, PIX_3, and PIX_4 include light sensitivities LS_1, LS_3, LS_2, and LS_4, respectively. In sensor region SR_4, pixels PIX_1, PIX_2, PIX_3, and PIX_4 have light sensitivities LS_1, LS_3, LS_2, and LS_4, respectively. Therefore, the light sensitivities of the pixels in each sensor region SR_3 and SR_4 follow the same regular distribution.

[0065] In one embodiment, each sensor region includes at least one R pixel, at least one G pixel, and at least one B pixel. The R pixel, the G pixel, and the B pixel have different light sensitivities. Figure 6 For example, the sensor area SR_1 of FIG. 1 includes pixels PIX_1, PIX_2, PIX_3, and PIX_4, which are R pixels, G pixels, G pixels, and B pixels, respectively. However, in this case, since pixels PIX_2 and PIX_3 are G pixels, the pixels PIX_1, PIX_2, PIX_3, and PIX_4 of the sensor area SR_1 include light sensitivities LS_1, LS_2, LS_2, and LS_4, respectively. Figure 6 The light sensitivities shown are LS_1, LS_2, LS_3, LS_4.

[0066] In one embodiment, the light sensitivity of the sensor area corresponds to the position of the sensor area. Figure 7As shown, sensor regions SR_1, SR_2, SR_3, and SR_4 are located at the center of the first optical sensor 100, and sensor regions SR_5, SR_6, and SR_7 are located at the upper left portion of the first optical sensor 100. In this embodiment, sensor regions SR_1, SR_2, SR_3, and SR_4 include a first light intensity or a first light intensity distribution, and sensor regions SR_5, SR_6, and SR_7 include a second light intensity or a second light intensity distribution.

[0067] In one embodiment, the optical sensing system further comprises a light source, and the light sensitivity of the sensor area is inversely related to the distance between the sensor area and the light source. Figure 8 As shown, the optical sensing system further includes a light source Lu. In this embodiment, sensor regions SR_1, SR_2 and SR_3 have at least one smaller light sensitivity due to being closer to the light source Lu. On the contrary, sensor regions SR_4, SR_5 and SR_6 have at least one larger light sensitivity due to being farther from the light source Lu.

[0068] In the above-mentioned embodiment, the optical sensing system includes only one optical sensor (ie, the first optical sensor 100). However, the optical sensing system disclosed in the present invention may include more than one optical sensor. Fig. 9 FIG. 1 is a schematic diagram of an optical sensing system 900 including a plurality of image sensors according to an embodiment of the present invention. Fig. 9 As shown in the above figure, the optical sensing system 900 includes the first optical sensor 100 and the second optical sensor 100_1 mentioned above. Fig. 9 The lower figure is a top view of the first optical sensor 100 and the second optical sensor 100_1.

[0069] exist Fig. 9 In the example, the optical sensing system 900 further includes a light source Lu and a housing 901. The housing 901 can block the light from the light source Lu. Therefore, the first optical sensor 100 receives the light from the light source Lu or the reflected light of the light, but the second optical sensor 100_1 does not receive the light and the reflected light. In such an example, Figure 8 The illustrated embodiment may be implemented on a first optical sensor 100 .

[0070] In one embodiment, the optical sensing system 900 is applied to a TOF (Time of Flight) system. In this case, the second optical sensor 100_1 can generate second optical data based on ambient light or based on reflected light from light source Lu or another light source to detect the proximity of an object. In addition, the optical data sensed by the first optical sensor 100 is used to calculate the interference caused by ambient light. In this way, objects can be detected more accurately. Therefore, in one embodiment, at least one photosensitivity of the second optical sensor 100_1 can be determined according to the usage scenario of the TOF system. For example, if the TOF system is set in a place where there is always strong ambient light, the photosensitivity can be set to low. On the contrary, if the TOF system is set in a darker place, the photosensitivity can be set to high.

[0071] The second optical sensor 100_1 may have the structure in the above-mentioned embodiment. Specifically, the second optical sensor 100_1 may include a second pixel array and a second light shutter layer. The second light shutter layer is used to receive the second input light and provide the second received light to the second pixel array, so that the second optical sensor has at least two different light sensitivities. In one embodiment, the second light shutter layer includes a third polarizing layer and a fourth polarizing layer. The third polarizing layer and the fourth polarizing layer may have the same structure as the first polarizing layer and the second polarizing layer described above. In detail, the third polarizing layer includes a plurality of third polarizing strips, wherein each third polarizing strip has a third width, a third length, and the distance between different third polarizing strips is a third distance. The fourth polarizing layer includes a plurality of fourth polarizing strips, wherein each fourth polarizing strip has a fourth width, a fourth length, and the distance between different fourth polarizing strips is a fourth distance.

[0072] Other details of the second optical sensor can be referred to the above embodiments and will not be described in detail here.

[0073] According to the above embodiments, the light sensitivity of the sensor area or the optical sensor can be set by the structure of the light shutter layer. In addition, the optical sensor can have different light sensitivities, and the light sensitivity of the sensor area or the optical sensor can be set according to different requirements.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An optical sensing system, characterized in that: include: A first optical sensor comprising: a first pixel array; as well as The first light shutter layer is used for receiving the first input light and providing the first received light to the first pixel array, so that the first optical sensor has a plurality of light sensitivities.

2. The optical sensing system according to claim 1, wherein: The first light shutter layer comprises: a first polarizing layer, comprising a plurality of first polarizing strips, each of the plurality of first polarizing strips comprises a first width and a first length, and different first polarizing strips in the plurality of first polarizing strips are separated by a first distance; The multiple photosensitivity levels correspond to the first width, the first length, and the first distance.

3. The optical sensing system according to claim 1, wherein: The first light shutter layer comprises: A first polarizing layer includes a plurality of first polarizing strips, each of the plurality of first polarizing strips includes a first width and a first length, and different first polarizing strips in the plurality of first polarizing strips are separated by a first distance; and The second polarizing layer includes a plurality of second polarizing strips. Each of the plurality of second polarizing strips includes a second width and a second length. Different second polarizing strips in the plurality of second polarizing strips are separated by a second distance.

4. The optical sensing system according to claim 3, characterized in that: The plurality of light sensitivities correspond to the first width, the first length, the first distance, the second width, the second length, and the second distance.

5. The optical sensing system according to claim 3, wherein: The plurality of first polarizing strips are located on a first plane and the plurality of second polarizing strips are located on a second plane parallel to the first plane, wherein the plurality of photosensitivity correspond to projections of the plurality of second polarizing strips and angles between the plurality of first polarizing strips, the projection being projected onto the first plane.

6. The optical sensing system according to claim 1, wherein: The first optical sensor includes a plurality of sensor areas, each of which includes pixels. Each of the plurality of sensor areas includes different plurality of photo-sensitivities, and the plurality of photo-sensitivities of each of the plurality of sensor areas are distributed according to the same rule.

7. The optical sensing system according to claim 6, characterized in that: Each of the plurality of sensor areas includes an R pixel, a G pixel, and a B pixel, wherein the R pixel, the G pixel, and the B pixel respectively include different plurality of light sensitivities.

8. The optical sensing system according to claim 1, wherein: The first optical sensor includes a plurality of sensor areas, the plurality of sensor areas are located at different positions of the first optical sensor and respectively include pixels, wherein the plurality of light sensitivities of the pixels of each of the plurality of sensor areas are distributed according to different rules.

9. The optical sensing system according to claim 1, wherein: Further including: A second optical sensor comprising: a second pixel array; as well as The second light shutter layer is used for receiving the second input light and providing the second received light to the second pixel array, so that the first optical sensor has a plurality of light sensitivities.

10. The optical sensing system according to claim 9, wherein: Further including: A light source for generating light; wherein the first optical sensor receives the light or the reflected light of the light; The second optical sensor does not receive the light and the reflected light.

11. The optical sensing system according to claim 1, wherein: Further including: light source; wherein the first optical sensor comprises a plurality of sensor regions; The light sensitivities of the sensor regions are inversely proportional to the distances between the sensor regions and the light source.

12. An optical sensing system, characterized in that: include: A first optical sensor comprising: a first pixel array; and The first light shutter layer is used to receive the first input light and provide the first received light to the first pixel array, including: A first polarizing layer includes a plurality of first polarizing strips, each of the plurality of first polarizing strips includes a first width and a first length, and different first polarizing strips in the plurality of first polarizing strips are separated by a first distance; and The second polarizing layer includes a plurality of second polarizing strips. Each of the plurality of second polarizing strips includes a second width and a second length. Different second polarizing strips in the plurality of second polarizing strips are separated by a second distance.

13. The optical sensing system according to claim 12, wherein: The plurality of light sensitivities correspond to the first width, the first length, the first distance, the second width, the second length, and the second distance.

14. The optical sensing system according to claim 12, wherein: The plurality of first polarizing strips are located on a first plane and the plurality of second polarizing strips are located on a second plane parallel to the first plane, wherein the plurality of photosensitivity correspond to projections of the plurality of second polarizing strips and angles between the plurality of first polarizing strips, the projection being projected onto the first plane.

15. The optical sensing system according to claim 12, wherein: Further including: A second optical sensor comprising: a second pixel array; and The second light shutter layer includes: A third polarizing layer includes a plurality of third polarizing strips, each of the plurality of third polarizing strips includes a third width and a third length, and different third polarizing strips in the plurality of third polarizing strips are spaced apart by a third distance; and The fourth polarizing layer includes a plurality of fourth polarizing strips, each of which has a fourth width and a fourth length, and different fourth polarizing strips in the plurality of fourth polarizing strips are spaced apart by a fourth distance.

16. The optical sensing system according to claim 15, wherein: Further including: A light source, for generating light; wherein the first optical sensor receives the light or the reflected light of the light; The second optical sensor does not receive the light and the reflected light.

17. A light shutter layer, characterized in that: include: A first polarizing layer includes a plurality of first polarizing strips, each of the plurality of first polarizing strips includes a first width and a first length, and different first polarizing strips in the plurality of first polarizing strips are separated by a first distance; as well as The second polarizing layer includes a plurality of second polarizing strips. Each of the plurality of second polarizing strips includes a second width and a second length. Different second polarizing strips in the plurality of second polarizing strips are separated by a second distance.

18. The light shutter layer according to claim 17, characterized in that: The plurality of light sensitivities correspond to the first width, the first length, the first distance, the second width, the second length, and the second distance.

19. The light shutter layer according to claim 17, characterized in that: The plurality of first polarizing strips are located on a first plane and the plurality of second polarizing strips are located on a second plane parallel to the first plane, wherein the plurality of photosensitivity correspond to projections of the plurality of second polarizing strips and angles between the plurality of first polarizing strips, the projection being projected onto the first plane.

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