Detection device and detection system

Abstract

The invention relates to a detection device and a detection system, and provides a detection device which further improves color detection precision. The detection device is provided with: a sensor unit which is provided with a photodiode for detecting light and which generates an output according to the degree of the detected light; a detection circuit that acquires an output of the sensor unit; and a light source that emits light of three colors in a switchable manner, and the detection circuit individually acquires outputs during each period in which one of the three colors is emitted, i.e., a first output, a second output, and a third output. The detection circuit corrects at least two of the first output, the second output, and the third output on the basis of a correction coefficient derived so that a fourth output, a fifth output, and a sixth output are the same, the fourth output being an output when the sensor unit directly irradiates the light of the first color from the light source, and the fifth output being an output when the sensor unit directly irradiates the light of the second color from the light source. The fifth output is an output when the sensor unit directly irradiates the light of the second color from the light source, and the sixth output is an output when the sensor unit directly irradiates the light of the third color from the light source.

Description

Technical Field

[0001] The present disclosure relates to a detection device and a detection system. Background Art

[0002] There is known a detection device that can detect the state of a culture environment of biological tissues or microorganisms using an optical sensor (for example, Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2005-87005 Summary of the invention

[0006] Technical problem to be solved by the invention

[0007] In the above detection device, by setting a light source of multiple colors and performing detection according to the color of the light, color information can be added to the detection result. However, sometimes there is a deviation in the brightness of the light source. Therefore, if the detection is performed without considering the deviation of the brightness, the color depth difference caused by the deviation of the brightness will be reflected in the detection result, and the detection accuracy of the color of the biological tissue or the culture environment of the microorganism as the detection object will be reduced.

[0008] The present disclosure is made in view of the above-mentioned technical problems, and an object of the present disclosure is to provide a detection device and a detection system that can further improve the color detection accuracy.

[0009] Solutions for solving technical problems

[0010] According to one aspect of the present disclosure, a detection device includes: a sensor unit, a photodiode for detecting light is provided in the sensor unit, and the sensor unit generates an output corresponding to the degree of the detected light; a detection circuit for acquiring the output of the sensor unit; and a light source capable of switchably emitting light of a first color, light of a second color, and light of a third color, the detection circuit separately acquiring a first output, a second output, and a third output, the first output being the output of the sensor unit corresponding to a period during which the light of the first color is emitted, the second output being the output of the sensor unit corresponding to a period during which the light of the second color is emitted, and the third output being the output of the sensor unit corresponding to a period during which the light of the third color is emitted, the detection circuit correcting at least two of the first output, the third output, and the sixth output based on a correction coefficient derived so as to make a fourth output, a fifth output, and a sixth output the same, the fourth output being the output of the sensor unit when the light of the first color is irradiated from the light source, the fifth output being the output of the sensor unit when the light of the second color is directly irradiated from the light source, and the sixth output being the output of the sensor unit when the light of the third color is directly irradiated from the light source.

[0011] According to one aspect of the present disclosure, a detection system comprises a detection device and an information processing device connected to the detection device, wherein the detection device comprises: a sensor unit, a photodiode for detecting light is arranged in the sensor unit, and the sensor unit generates an output corresponding to the degree of the detected light; a detection circuit, which obtains the output of the sensor unit; and a light source, which can switchably emit light of a first color, light of a second color, and light of a third color, the detection circuit separately obtains the first output, the second output, and the third output, and transmits data corresponding to each output to the information processing device, the first output is the output of the sensor unit corresponding to the period of emitting the first color of light, and the second output is the period of emitting the first color of light. the output of the sensor unit corresponding to the period during which the light of the second color is emitted, the third output is the output of the sensor unit corresponding to the period during which the light of the third color is emitted, the information processing device corrects the data corresponding to at least two of the first output, the second output and the third output based on the correction coefficient derived in a manner so as to make the fourth output, the fifth output and the sixth output the same, the fourth output being the output of the sensor unit when the light of the first color is directly irradiated from the light source, the fifth output being the output of the sensor unit when the light of the second color is directly irradiated from the light source, and the sixth output being the output of the sensor unit when the light of the third color is directly irradiated from the light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1It is a diagram showing the main structure of the detection system.

[0013] Figure 2 It is a diagram showing a configuration example of a detection area and a wiring area.

[0014] Figure 3 : is a circuit diagram showing the circuit configuration of the sensor unit.

[0015] Figure 4 This is a schematic diagram showing the state when the detection system is in operation.

[0016] Figure 5 It is a schematic diagram showing a configuration example of a light source.

[0017] Figure 6 1 is a schematic diagram showing a lighting pattern of a light source during sensor scanning.

[0018] Figure 7 This is a graph showing an example in which the brightness distributions of the first light source, the second light source, and the third light source are different from each other.

[0019] Figure 8 This is a graph showing an example of correction of signal intensity.

[0020] Fig. 9 is a graph showing another example of correction of signal intensity.

[0021] Fig.10 1 is a schematic diagram showing a lighting pattern of a light source in a sensor scan for correcting signal strength.

[0022] Fig.11 This is a schematic diagram showing an example of the flow of lighting control of the first light source, the second light source, and the third light source during sensor scanning.

[0023] Fig.12 is a flowchart showing the flow of processing involved in sensor scanning for correcting signal strength.

[0024] Fig.13 This is a flowchart showing the flow of processing related to sensor scanning of a subject.

[0025] Fig.14 is a flowchart showing the flow of processing involved in sensor scanning for correcting signal strength.

[0026] Fig.15 This is a flowchart showing the flow of processing related to sensor scanning of a subject.

[0027] Description of Reference Numerals

[0028] 1 detection system; 10 sensor panel; 15 detection circuit; 22 light source; 22R first light source; 22G second light source; 22B third light source; 30 information processing device; 60 detection device; 82PD; WA sensor unit. DETAILED DESCRIPTION

[0029] The various embodiments of the present disclosure are described below with reference to the accompanying drawings. It should be noted that the disclosure is only an example after all, and appropriate changes that can be easily thought of by those skilled in the art while maintaining the main purpose of the invention are of course included in the scope of the present disclosure. In addition, in order to make the description clearer, in the accompanying drawings, the width, thickness, shape, etc. of each part are sometimes schematically shown compared to the actual situation, but it is only an example after all, and does not limit the interpretation of the present disclosure. In addition, in this specification and each figure, with respect to the figures that have appeared, the same figure mark is sometimes marked for the elements that are the same as the aforementioned elements, and the detailed description is appropriately omitted.

[0030] Figure 1 1 is a diagram showing a main configuration of the detection system 1. The detection system 1 includes a detection device 60 and an information processing device 30. The detection device 60 includes a sensor panel 10 and a light source panel 20. The sensor panel 10 and the light source panel 20 of the detection system 1 are connected to the information processing device 30.

[0031] The sensor panel 10 is provided with a detection area SA (see Figure 2 ). In addition, a reset circuit 13, a scanning circuit 14, and a wiring area VA are mounted on the substrate 11. The configuration on the detection area SA, the reset circuit 13, and the scanning circuit 14 are connected to the detection circuit 15 via the wiring area VA.

[0032] The light source panel 20 has a light emitting area LA for irradiating light to the detection area SA. The light source panel 20 has a light source 22 disposed on a substrate 21. The light source 22 has a light emitting element such as an LED (Light Emitting Diode) and is disposed in the light emitting area LA. Figure 1 In the example shown, a plurality of light sources 22 are arranged in a matrix on a substrate 21 .

[0033] The light source driving circuit 23 is provided in the light source panel 20. The light source driving circuit 23 controls whether each of the plurality of light sources 22 is turned on and the brightness when turned on under the control of the information processing device 30. The plurality of light sources 22 can be configured to be individually controllable to emit light or to emit light together.

[0034] The information processing device 30 performs various controls related to the operation of the detection system 1. Specifically, the information processing device 30 is, for example, an information processing device corresponding to the configuration of the detection system 1. The information processing device 30 is connected to the detection circuit 15 by means of a connection unit such as a communication realized by a wired, wireless, or mixed communication network or a standardized interface, and obtains an output from the detection circuit 15. In addition, the information processing device 30 is connected to the light source drive circuit 23 through the connection unit, and performs processing related to the lighting of the light source 22, such as determining the lighting mode of the light source 22.

[0035] Figure 2 1 is a diagram showing an example of the configuration of the detection area SA and the wiring area VA. Figure 3 ) is arranged in the detection area SA. In an embodiment, as Figure 2 As shown, a plurality of sensor units WA are arranged in a matrix along a first direction Dx and a second direction Dy. The first direction Dx is orthogonal to the second direction Dy. In addition, when the third direction Dz is described in the following description, it refers to a direction orthogonal to the first direction Dx and the second direction Dy.

[0036] The reset circuit 13 is connected to the reset signal transmission lines 51, 52, ..., 5n. When the reset signal transmission line 5 is described below, it refers to any one of the reset signal transmission lines 51, 52, ..., 5n. The reset signal transmission line 5 is wired along the first direction Dx. Figure 2 In the example shown, n reset signal transmission lines 5 are arranged in the second direction Dy. n is a natural number greater than 2. The n reset signal transmission lines 5 are connected to the reset circuit 13 at one end side in the first direction Dx.

[0037] The scanning circuit 14 is connected to the scanning lines 61, 62, ..., 6n. When the scanning line 6 is described below, it refers to any one of the scanning lines 61, 62, ..., 6n. The scanning line 6 is a wiring along the first direction Dx. Figure 2 In the example shown, n scanning lines 6 are arranged in the second direction Dy. The n scanning lines 6 are connected to the scanning circuit 14 at the other end side in the first direction Dx.

[0038] like Figure 2 As shown in FIG. 1 , the reset signal transmission lines 5 and the scanning lines 6 are alternately arranged along the second direction Dy in the detection area SA. Figure 1 and Figure 2 The reset circuit 13 and the scanning circuit 14 are arranged at positions facing each other across the detection area SA in the example shown in FIG. 1 . However, the layout of the reset circuit 13 and the scanning circuit 14 is not limited thereto and can be changed as appropriate.

[0039] In addition, signal lines 71, 72, ..., 7m are provided in the detection area SA. When the signal line 7 is described below, it means any one of the signal lines 71, 72, ..., 7m. The signal line 7 is a wiring along the second direction Dy.

[0040] exist Figure 2 In the example shown, m signal lines 7 are arranged along the first direction Dx. m is a natural number greater than 2. The m signal lines 7 are respectively connected to any one of the multiple switches (e.g., switch SW1, switch SW2, switch SW3, or switch SW4) of the selection circuit 40 at one end side in the second direction Dy.

[0041] The selection circuit 40 is provided in the wiring area VA. The selection circuit 40 has a plurality of switches. Figure 2 In the example shown, switches SW1, SW2, SW3, and SW4 are shown as the multiple switches. The multiple switches of a selection circuit 40 are turned on (ON, connected state) at different timings. While one of the multiple switches of a selection circuit 40 is turned on (connected state), the other switches are turned off (OFF, non-connected state). The number of selection circuits 40 corresponds to the number (m) of signal lines 7. If the number of switches is set to p, then the number of selection circuits 40 is sufficient as long as m / p is present. In the case where there are multiple selection circuits 40, the multiple selection circuits 40 are connected to the detection circuit 15 through separate wirings 401, 402, ..., 40p, respectively.

[0042] It should be noted that the connection between the signal line 7 and the detection circuit 15 through the selection circuit 40 is only an example and is not limited thereto. The signal line 7 may be directly connected to the detection circuit 15 separately in the wiring area VA. In the wiring area VA, the reset circuit 13 is connected to the detection circuit 15 through the wiring 131. In the wiring area VA, the scanning circuit 14 is connected to the detection circuit 15 through the wiring 141.

[0043] The detection circuit 15 is provided in the sensor part WA by the PD 82 (refer to Figure 3 ) and controls the operation timing of the reset circuit 13 and the scanning circuit 14. In addition, the output from the sensor unit WA is input to the detection circuit 15. The detection circuit 15 converts the signal input from the sensor unit WA into data that can be interpreted by the information processing device 30, and outputs it to the information processing device 30. It should be noted that the detection circuit 15 of the embodiment is an MCU (Micro Controller Unit: micro control unit).

[0044] Figure 3 : is a circuit diagram showing the circuit configuration of the sensor unit WA. Figure 3 The first direction Dx and the second direction Dy in the figure merely correspond to the directions of the reset signal transmission line 5, the scanning line 6, and the signal line 7, and do not strictly indicate the directions of the relative positional relationship of the circuit configuration in the sensor unit WA.

[0045] like Figure 3 As shown, a switch element 81, a PD82, a transistor element 83, and a switch element 85 are provided in the sensor unit WA. The PD82 is a photodiode (PD). The switch elements 81, 85, and the transistor element are MOSFETs (Metal Oxide Semiconductor Field Effect Transistors).

[0046] The gate of the switching element 81 is connected to the reset signal transmission line 5. A reset potential VReset is provided to one of the source or drain of the switching element 81. The cathode of PD82 and the gate of the transistor element 83 are connected to the other of the source or drain of the switching element 81. When described as a connecting portion CP below, the other refers to a portion where the cathode of PD82 and the gate of the transistor element 83 are connected. In addition, a reference potential VCOM is provided from the anode side of PD82. Although the potential difference between the reset potential VReset and the reference potential VCOM is predetermined, the potentials of the reset potential VReset and the reference potential VCOM can be variable. It should be noted that the reset potential VReset is a potential higher than the reference potential VCOM.

[0047] The output source potential VPP2 is provided to the drain of the transistor element 83 functioning as a source follower. One of the source or drain of the switch element 85 is connected to the source of the transistor element 83. The other of the source or drain of the switch element 85 is connected to the signal line 7. The gate of the switch element 85 is connected to the scanning line 6.

[0048] The reset potential VReset, the reference potential VCOM, and the output source potential VPP2 are supplied from the detection circuit 15 to the sensor unit WA based on power supplied from a power supply circuit (not shown) connected to the detection circuit 15, for example, but are not limited thereto and can be changed as appropriate.

[0049] The output source potential VPP2 is predetermined. In addition, the potential on the source side of the transistor element 83 is a potential obtained by reducing the potential corresponding to the gate-source voltage (Vth) of the transistor element 83 from the output potential of the PD82. In this case, the potential on the source side of the transistor element 83 corresponds to the potential of the reset potential VReset and the reference potential VCOM. The potential of the output of PD82 corresponds to the photoelectromotive force generated by PD82 based on the light detected by PD82 during the exposure period EX described later.

[0050] When the gate of the switch element 85 is turned on according to the signal provided from the scanning circuit 14 through the scanning line 6, the source and drain of the switch element 85 are connected. As a result, the signal (potential) transmitted to the switch element 85 through the transistor element 83 is transmitted to the signal line 7 through the switching element 85. In this way, an output from the sensor unit WA is generated. When it is recorded as a scanning signal later, it refers to the signal (potential) provided from the scanning circuit 14 through the scanning line 6. The scanning circuit 14 is a circuit that outputs the scanning signal.

[0051] The output of one PD 82 provided in a certain sensor portion WA corresponds to the intensity of light detected by the PD 82 during a predetermined exposure period. The output of the PD 82 is reset according to a signal provided from the reset circuit 13 via the reset signal transmission line 5. When the gate of the switch element 81 is turned on according to the signal, the source and drain of the switch element 81 are connected. As a result, the potential of the connection portion CP is reset to the reset potential VReset.

[0052] Next, refer to Figure 4 The following describes the operation of the detection system 1 .

[0053] Figure 4 1 is a schematic diagram showing the operation of the detection system 1. The detection system 1 is configured such that the light source panel 20 and the sensor panel 10 are opposed to each other along the third direction Dz with the detected object SUB interposed therebetween. The detected object SUB is a culture dish formed with a culture medium such as an agar culture medium, but is not limited thereto and may also be other structures that allow light from the light source panel 20 to pass through.

[0054] In addition, in the embodiment, the ray limiting component 50 is interposed between the object SUB and the sensor panel 10. The ray limiting component 50 is a component that limits the path of light that can reach the sensor panel 10 in the light LV irradiated from the light source panel 20 toward the sensor panel 10. Specifically, the ray limiting component 50 is, for example, a plate-shaped component, and a plurality of through holes in the third direction Dz are scattered on the plate-shaped component. The light that can pass through the ray limiting component 50 is limited to the light that passes through the through hole. The through hole corresponds to the configuration of the light source 22 provided in the sensor panel 10. The through hole is provided so that each PD82 does not detect light from more than two light sources 22 at the same time. That is, in the embodiment, the light detected by one PD82 is the light from one light source 22. It should be noted that the through hole is not provided separately in each PD82, but is shared by multiple PD82. Therefore, the light from one light source 22 is shared by multiple PD82. The light LV is the light R1, light G1, or light B1 described later.

[0055] The object SUB is placed on the radiation limiting member 50 and is within the detection area SA. The light source panel 20 is lit by the light source 22, and irradiates light from above the object SUB toward the sensor panel 10. The light emitted from the light source 22 and directed toward the object SUB, which passes through the object SUB and the radiation limiting member 50, is detected by the PD 82 (see FIG. 1 ) within the detection area SA. Figure 3 and Figure 4 ) detection. When described below as sensor scanning, it means that the sensor panel 10 is Figure 4 The process of detecting the light from the light source panel 20 in a state where the positional relationship among the light source panel 20, the object to be detected (for example, the object SUB), the radiation limiting member 50 and the sensor panel 10 as shown is established.

[0056] In an embodiment, when the object to be detected SUB is interposed between the sensor panel 10 and the light source panel 20, further, although the radiation limiting component 50 is interposed between the object to be detected SUB and the sensor panel 10, the radiation limiting component 50 is not a necessary structure, and other optical components that perform the same function as the radiation limiting component 50 may be used, or the radiation limiting component 50 may be omitted.

[0057] In reference Figure 4 Under the setting conditions described above, the sensor scan is performed by detecting the light from the light source 22 by the PD 82. When the sensor scan is described below, it means a process of detecting the light irradiated from the light source panel 20 by the sensor panel 10.

[0058] Figure 5 2 is a schematic diagram showing an example of the structure of the light source 22. Figure 5As shown, the light source 22 includes a first light source 22R, a second light source 22G, and a third light source 22B. The first light source 22R, the second light source 22G, and the third light source 22B are light emitting elements (e.g., LEDs) that emit light of different colors, respectively. In an embodiment, the first light source 22R emits red (R) light. The second light source 22G emits green (G) light. The third light source 22B emits blue (B) light.

[0059] It should be noted that Figure 5 The light source 22 shown is a structure in which the long sides of the first light source 22R, the second light source 22G and the third light source 22B are arranged along the second direction Dy in the order of the first light source 22R, the second light source 22G and the third light source 22B from one side of the first direction Dx to the other side, but this is an embodiment of the light source 22 and is not limited thereto. The shapes of the first light source 22R, the second light source 22G and the third light source 22B in the light source 22 when viewed from above and the positional relationship of the first light source 22R, the second light source 22G and the third light source 22B can be appropriately changed.

[0060] Figure 6 2 is a schematic diagram showing the lighting pattern of the light source 22 during the sensor scan. Figure 4 As described, when the object SUB is located between the sensor panel 10 and the light source panel 20 , the light reaching the sensor panel 10 from the first light source 22R, the second light source 22G, and the third light source 22B corresponds to the color of the object SUB.

[0061] For example, suppose that the sample SUB carries a purple culture medium through the cultivation of microorganisms. Figure 6 As shown in "Lighting Mode 1", a part of the light R1 irradiated from the first light source 22R to the object SUB is reflected by the object SUB and scattered as light R2. In addition, a part of the light R1 reaches the sensor panel 10 as light R3 via the object SUB to the opposite side of the first light source 22R. In addition, in this case, as shown in "Lighting Mode 3", a part of the light B1 irradiated from the third light source 22B to the object SUB is reflected by the object SUB and scattered as light B2. In addition, a part of the light B1 reaches the sensor panel 10 as light B3 via the object SUB to the opposite side of the third light source 22B. On the other hand, in this case, as shown in "Lighting Mode 2", the light G1 irradiated from the second light source 22G to the object SUB is almost absorbed by the object SUB because the object SUB is purple, and does not actually reach the sensor panel 10. In this way, the light reaching the sensor panel 10 from among the light from the first light source 22R, the second light source 22G, and the third light source 22B corresponds to the color of the object SUB.

[0062] In the embodiment, the PD82 of the sensor unit WA is a component for detecting the intensity of light, not a component for recognizing the color of light. Therefore, in the embodiment, for example, by separately setting Figure 6 The detection result of light corresponding to the color of the detected object SUB is obtained by lighting the first light source 22R as in the "lighting mode 1" shown, lighting the second light source 22G as in the "lighting mode 2", and lighting the third light source 22B as in the "lighting mode 3". That is, in the embodiment, the sensor scan is performed in "lighting mode 1", "lighting mode 2", and "lighting mode 3", respectively. Then, by merging (integrating) the results of these sensor scans, the output of the sensor scan including the color information corresponding to the color of the detected object SUB is obtained. When recorded below as the merging of data, it refers to the merging of the results of such sensor scans, which is used to obtain the output of the sensor scan including the color information corresponding to the color of the detected object SUB. In the merging of data, the correction coefficient of the signal strength described later is reflected.

[0063] It should be noted that in Figure 6 In the example shown, light reaching the sensor panel 10 is generated in "lighting mode 1" and "lighting mode 3", but no light reaching the sensor panel 10 is generated in "lighting mode 2". This is only an example after all, and does not mean that this will necessarily be the case in "lighting mode 1", "lighting mode 2" and "lighting mode 3".

[0064] Here, if the first output is the output of the sensor unit WA corresponding to the period of emitting light of the first color (for example, red (R)), then Figure 6 The "lighting mode 1" shown in FIG. 1 represents a lighting mode of the light source 22 that can obtain the first output. In addition, if the second output is the output of the sensor unit WA corresponding to the period of emitting light of the second color (for example, green (G)), then Figure 6 The "lighting mode 2" shown in FIG. 1 represents a lighting mode of the light source 22 that can obtain the second output. In addition, if the third output is the output of the sensor unit WA corresponding to the period of emitting light of the third color (for example, blue (B)), then Figure 6 The illustrated “lighting mode 3” indicates a lighting mode of the light source 22 that can obtain a third output.

[0065] However, as referenced Figure 1 As described above, the plurality of light sources 22 are arranged in the light emitting area LA. Figure 5As described, the light source 22 includes a first light source 22R, a second light source 22G, and a third light source 22B. Therefore, in the embodiment, a plurality of first light sources 22R, second light sources 22G, and third light sources 22B are provided. Here, the brightness of the first light source 22R, the second light source 22G, and the third light source 22B of each light source 22 is not necessarily uniform. Because of the individual differences of the light emitting elements of the first light source 22R, the second light source 22G, and the third light source 22B, differences in brightness may sometimes occur.

[0066] Figure 7 : is a graph showing an example in which the brightness distributions of the first light source 22R, the second light source 22G, and the third light source 22B are different from each other. Figures 7 to 9 In the coordinates of the detection area SA shown on the horizontal axis of the graph shown in the figure, "E1" indicates one end of the detection area SA along one of the first direction Dx and the second direction Dy, and "E2" indicates the other end of the detection area SA along the one direction. Figures 7 to 9 The signal intensity indicated on the vertical axis of the graph shown represents the degree of intensity of the signal output according to the brightness of light detected by the sensor unit WA provided at each coordinate.

[0067] Figure 7 The graph RP1 shown shows an example of the brightness distribution of the light from the first light source 22R detected in the range of "E1" to "E2". The graph GP1 shows an example of the brightness distribution of the light from the second light source 22G detected in the range of "E1" to "E2". The graph BP1 shows an example of the brightness distribution of the light from the third light source 22B detected in the range of "E1" to "E2". In the following description, it is assumed that the graph RP1, the graph GP1 and the graph BP1 are obtained in the embodiment. Of course, the actual brightness distribution of each of the first light source 22R, the second light source 22G and the third light source 22B is not limited to the graph RP1, the graph GP1 and the graph BP1.

[0068] As shown in the graph RP1, the graph GP1, and the graph BP1, when there is a deviation in the brightness of each color due to the coordinates, the coloring caused by the deviation in brightness, not the color of the object SUB, is reflected in the output of the sensor scan. Therefore, the deviation in brightness affects the accuracy of color reproduction in the output of the sensor scan. Therefore, in the embodiment, the signal intensity is corrected so that it can be considered that the brightness of the light from the first light source 22R, the brightness of the light from the second light source 22G, and the brightness of the light from the third light source 22B are substantially the same when observed at least in coordinate units.

[0069] Figure 8 is a graph showing an example of correction of signal strength. Figure 8 In the example shown, the output is corrected so that the output of the sensor unit WA set at each coordinate of the detection area SA is regarded as a fixed output value. Figure 8 As shown in the graphs RP2, GP2, and BP2, the signal strength is constant regardless of the coordinates.

[0070] Figure 8 The graph RP2 shown shows the corrected signal intensity corresponding to the luminance distribution of the light from the first light source 22R, i.e., the graph RP1. The graph GP2 shows the corrected signal intensity corresponding to the luminance distribution of the light from the second light source 22G, i.e., the graph GP1. The graph BP2 shows the corrected signal intensity corresponding to the luminance distribution of the light from the third light source 22B, i.e., the graph BP1.

[0071] Assuming that no correction is performed, the distribution of the signal strength output by the sensor unit WA at each coordinate set in the range from "E1" to "E2" directly reflects the graph RP1, graph GP1, and graph BP1. Here, correction is performed on the coordinates of the graph RP1 where a signal strength lower than that of the graph RP2 as a determined signal strength can be obtained to increase the signal strength to the graph RP2. In addition, correction is performed on the coordinates of the graph RP1 where a signal strength higher than that of the graph RP2 can be obtained to reduce the signal strength to the graph RP2. As a result, the output of the sensor scan whose signal strength is the graph RP2 regardless of the coordinates can be obtained. By also reflecting the correction corresponding to the relationship between the graph RP1 and the graph RP2 described above in the relationship between the graph GP1 and the graph GP2 and the relationship between the graph BP1 and the graph BP2, the output of the sensor scan whose signal strength is the graph GP2 and the graph BP2 can be obtained.

[0072] It should be noted that in Figure 8 In , it seems that graph RP2 is higher than graph GP2 and graph BP2, and graph GP2 is higher than graph BP2, but in fact they are all the same. Figure 8 In the figure, for the sake of convenience, the graph RP2, the graph GP2, and the graph BP2 are simply shown with different lines. Fig. 9 The relationship among the graph RP1 , the graph GP3 , and the graph BP3 shown is also the same as the relationship among the graph RP2 , the graph GP2 , and the graph BP2 .

[0073] The signal strength determined as the graph RP2, graph GP2, and graph BP2 may be a fixed signal strength or a signal strength corresponding to the average value of one of the graphs RP1, GP1, or BP1 (e.g., graph RP1). By setting the signal strength to the average value, the degree of correction can be further reduced.

[0074] Here, the output before correction from the sensor unit WA at a certain coordinate (x, y) located on the Dx-Dy plane of the detection area SA is set to Raw. In addition, the output in Raw corresponding to the detection result of the light from the first light source 22R is set to Raw(R). In addition, the output in Raw corresponding to the detection result of the light from the second light source 22G is set to Raw(G). In addition, the output in Raw corresponding to the detection result of the light from the third light source 22B is set to Raw(B). In addition, the correction coefficient applied to the output from the sensor unit WA located at the coordinate (x, y) is set to Co. In addition, the correction coefficient in Co applied to the output corresponding to the detection result of the light from the first light source 22R is set to Co(R). In addition, the correction coefficient in Co applied to the output corresponding to the detection result of the light from the second light source 22G is set to Co(G). In addition, the correction coefficient in Co applied to the output corresponding to the detection result of the light from the third light source 22B is set to Co(B). Then, when the average value of one of the graphs RP1, GP1, or BP1 (for example, graph RP1) is set to Ave, Co(R) can be expressed as the following equation (1), Co(G) can be expressed as the following equation (2), and Co(B) can be expressed as the following equation (3). In the correction of the signal strength using the correction coefficient, Co(R) is applied to the first output, Co(G) is applied to the second output, and Co(B) is applied to the third output. Figure 8 In the correction corresponding to the description of , Co(R), Co(G) and Co(B) are calculated individually for each sensor unit WA.

[0075] Co(R)=Ave / Raw(R)…(1)

[0076] Co(G)=Ave / Raw(G)…(2)

[0077] Co(B)=Ave / Raw(B)…(3)

[0078] It should be noted that the signal strength calibration method is not limited to reference Figure 8 Method of description.

[0079] Fig. 9 is a graph showing another example of correction of signal intensity. Fig. 9 The graph GP3 shown shows the corrected signal strength after the graph GP1 is corrected to correspond to the graph RP1. The graph BP3 shows the corrected signal strength after the graph BP1 is corrected to correspond to the graph RP1. Fig. 9 In FIG. 1 , it seems that graph GP3 is higher than graph RP1 and graph BP3 , and graph RP1 is higher than graph BP3 , but in fact they are all the same.

[0080] exist Fig. 9 In the example shown, correction is performed so that the signal intensity when light from light sources of other colors (second light source 22G and third light source 22B) is detected matches the signal intensity corresponding to the brightness of the first light source 22R detected by the sensor unit WA at each coordinate. Therefore, the distribution of the signal intensity in the range of "E1" to "E2" represented by the graph GP3 representing the signal intensity after correction of the graph GP1 and the graph BP3 representing the signal intensity after correction of the graph BP1 is the same as the brightness distribution in the range represented by the graph RP1.

[0081] In reference Fig. 9 In the case of the description, Co(R) may be represented by the following formula (4), Co(G) may be represented by the following formula (5), and Co(B) may be represented by the following formula (6).

[0082] Co(R)=Raw(R) / Raw(R)…(4)

[0083] Co(G)=Raw(R) / Raw(G)…(5)

[0084] Co(B)=Raw(R) / Raw(B)…(6)

[0085] Since Co(R) in formula (4) must be 1, Fig. 9 In the correction corresponding to the description of FIG. 1 , the output corresponding to the detection result of the light from the first light source 22R is not corrected as in the first output described above. Fig. 9 In the correction corresponding to the description of the reference, the output corresponding to the detection result of the light from the second light source 22G and the output corresponding to the detection result of the light from the third light source 22B are corrected as the second output and the third output described above. Fig. 9 In the correction corresponding to the description of , it is sufficient to calculate Co(G) and Co(B) for each sensor unit WA individually.

[0086] In an embodiment, reference is made to Figure 8 or Fig. 9 Correction of signal strength described above: The sensor scan for correcting the signal strength is performed in a state where the object SUB is not interposed between the sensor panel 10 and the light source panel 20 .

[0087] Fig.10 2 is a schematic diagram showing the lighting pattern of the light source 22 in the sensor scan for correcting the signal strength. Fig.10The first light source 22R is turned on to irradiate the light R1 to the light source panel 20 as in the “lighting mode 4” shown in the figure, the second light source 22G is turned on to irradiate the light G1 to the light source panel 20 as in the “lighting mode 5”, and the third light source 22B is turned on to irradiate the light B1 to the light source panel 20 as in the “lighting mode 6”. Figures 7 to 9 To explain the correspondence relationship among the graph RP1, graph GP1, and graph BP1 shown, graph RP1 is obtained by "lighting pattern 4", graph GP1 is obtained by "lighting pattern 5", and graph BP1 is obtained by "lighting pattern 6".

[0088] like Fig.10 As shown, in "lighting mode 4", "lighting mode 5" and "lighting mode 6", the object SUB is not interposed between the sensor panel 10 and the light source panel 20. Therefore, the sensor section WA provided on the sensor panel 10 detects the light R1 irradiated from the first light source 22R in "lighting mode 4", detects the light G1 irradiated from the second light source 22G in "lighting mode 5", and detects the light B1 irradiated from the third light source 22B in "lighting mode 6". By specifying the correction coefficient of the signal intensity according to the output of the sensor scan obtained in this way, the output of the sensor scan after correction corresponding to the distribution of the signal intensity corresponding to the graph RP2, graph GP2 and graph BP2 or the graph RP1, graph GP3 and graph BP3 can be obtained.

[0089] Here, if the fourth output is an output when light of the first color (for example, red (R)) is directly irradiated from the light source (for example, the first light source 22R) to the sensor unit WA, then Fig.10 The "lighting mode 4" shown in FIG. 4 represents the lighting mode of the light source 22 that can obtain the fourth output. In addition, if the fifth output is the output when the light of the second color (for example, green (G)) is directly irradiated from the light source (for example, the second light source 22G) to the sensor part WA, then Fig.10 The "lighting mode 5" shown in FIG. 5 represents the lighting mode of the light source 22 that can obtain the fifth output. In addition, if the sixth output is the output when the light of the third color (for example, blue (B)) is directly irradiated from the light source (for example, the third light source 22B) to the sensor part WA, then Fig.10 The "lighting mode 6" shown in FIG. 6 represents a lighting mode of the light source 22 that can obtain the sixth output. In addition, as in the above-mentioned equations (1), (2), and (3), based on the reference Figure 8 The correction coefficient described in the description corresponds to the average value (AVE) of the outputs of the plurality of sensor units WA. In addition, as in the above-mentioned equations (4), (5), and (6), based on the reference Fig. 9 The correction coefficient described in corresponds to the brightness distribution (graph RP1) of the light of the first color in the detection area SA when the fourth output is obtained.

[0090] It should be noted that the ray limiting component 50 only limits the path of light, and does not change the light itself that can reach the sensor panel 10 from the light source panel 20. Therefore, even if the ray limiting component 50 is provided, the light that reaches the sensor panel 10 from the light source panel 20 can be said to be light that directly irradiates the sensor part WA from the light source 22.

[0091] In an embodiment, when using Figure 4 and Figure 6 The output of the sensor scan when the detected object SUB is interposed between the sensor panel 10 and the light source panel 20 as shown is the corrected output of the sensor scan. That is, the correction of the signal strength is reflected in the output of the sensor scan when the detected object SUB is interposed between the sensor panel 10 and the light source panel 20.

[0092] In sensor scanning for correcting signal strength and sensor scanning with the object SUB interposed between the sensor panel 10 and the light source panel 20, the periods during which the first light source 22R, the second light source 22G, and the third light source 22B are lit are separately set.

[0093] Fig.11 2 is a schematic diagram showing an example of a flow of lighting control of the first light source 22R, the second light source 22G, and the third light source 22B during sensor scanning. Fig.11 As shown, first, the first light source is set to be lit (stage F1), that is, the period during which the first light source 22R is lit. After that, the output of the sensor scan (stage F2) is performed. In the output of the sensor scan, the brightness of the light from the first light source 22R detected by the sensor unit WA during the period during which the first light source is lit is reflected in the signal intensity. Then, data transmission is performed (stage F3). In the data transmission, data reflecting the output of the sensor scan is transmitted from the detection circuit 15 to the information processing device 30.

[0094] After that, the second light source is set to be lit (stage F4), that is, the period during which the second light source 22G is lit. After that, the output of the sensor scan (stage F5) is performed. In the output of the sensor scan, the brightness of the light from the second light source 22G detected by the sensor unit WA during the period during which the second light source is lit is reflected in the signal intensity. Then, data transmission is performed (stage F6). In the data transmission, data reflecting the output of the sensor scan is transmitted from the detection circuit 15 to the information processing device 30.

[0095] After that, the third light source is set to be lit (stage F7), that is, the period during which the third light source 22B is lit. After that, the output of the sensor scan (stage F8) is performed. In the output of the sensor scan, the brightness of the light from the third light source 22B detected by the sensor unit WA during the period during which the third light source is lit is reflected in the signal intensity. Then, data transmission is performed (stage F9). In the data transmission, data reflecting the output of the sensor scan is transmitted from the detection circuit 15 to the information processing device 30.

[0096] It should be noted that whenever the Fig.11 During the sensor scan shown, the charge corresponding to the degree of light detection performed by the sensor unit WA is reset. In the case of performing a series of sensor scans including a first light source lighting, a second light source lighting, and a third light source lighting in sequence, a pre- and post-scan processing (stage F10) is performed between data transmission after the third light source is lit and the first light source is lit. Regarding the pre- and post-scan processing, for example, the setting of the detected object SUB after a series of sensor scans for correction of signal strength, the replacement of the detected object SUB for sensor scanning of multiple detected object SUBs, etc. can be cited. During the time period of the pre- and post-scan processing, the detection system 1 is in a standby state (sleep).

[0097] It should be noted that the correction of signal strength and the merging of data and the processing of the correction coefficient reflecting the signal strength when the data is merged are performed by, for example, the information processing device 30, but the detection circuit 15 may also have the function of performing the correction of signal strength and the merging of data and the processing of the correction coefficient reflecting the signal strength when the data is merged. In this case, the Fig.11 That is, the timing of transmitting data from the detection circuit 15 corresponding to the sensor scan to the information processing device 30 can be concentrated after the data is merged. In addition, the data obtained by the output of the sensor scan for signal strength correction does not need to be transmitted to the information processing device 30, and the correction coefficient of the signal strength is maintained by the detection circuit 15.

[0098] Reference Figures 12 to 15 The following describes the flow of sensor scanning for correcting signal strength and sensor scanning when the object SUB is interposed between the sensor panel 10 and the light source panel 20 in the operation of the detection system 1 in the above-described embodiment. Fig.12 and Fig.13 A case where correction of signal strength and integration of data are performed by the information processing device 30 will be described.

[0099] Fig.121 is a flowchart showing the flow of processing related to sensor scanning for correcting signal strength. In this processing, it is assumed that when the power of the detection system 1 is turned on (step S1), other objects introduced from the outside into the detection system 1, such as the detected object SUB, are not given to the detection system 1.

[0100] First, set up Fig.10 The lighting control period of the light source 22 corresponding to the "lighting mode 4" shown in FIG. 1 (step S2), that is, the lighting period of the first light source 22R. After that, a sensor scan is performed to generate an output signal indicating the degree of intensity of the light detected during step S2 (step S3). After that, data reflecting the output of the sensor scan in step S3 is transmitted from the detection circuit 15 to the information processing device 30 (step S4).

[0101] In addition, setting Fig.10 The lighting control period of the light source 22 corresponding to the "lighting mode 5" shown in FIG. 5 (step S5), that is, the lighting period of the second light source 22G. After that, a sensor scan is performed to generate an output signal indicating the degree of intensity of the light detected during step S5 (step S6). After that, data reflecting the output of the sensor scan in step S6 is transmitted from the detection circuit 15 to the information processing device 30 (step S7).

[0102] In addition, setting Fig.10 The lighting control period of the light source 22 corresponding to the "lighting mode 6" shown in FIG. 1 is performed (step S8), that is, the lighting period of the third light source 22B. After that, a sensor scan is performed to generate an output signal indicating the intensity of the light detected during step S8 (step S9). After that, data reflecting the output of the sensor scan in step S9 is transmitted from the detection circuit 15 to the information processing device 30 (step S10).

[0103] The information processing device 30 calculates the correction coefficient of the signal strength based on the data transmitted in the processing of step S4, step S7 and step S10 (step S11). Figure 8 When calculating the correction coefficient corresponding to the average value (Ave) as described above, the correction coefficients (Co(R), Co(B), Co(G)) are calculated as in the above formula (1), formula (2), and formula (3). Fig. 9 When the correction coefficients corresponding to the map RP1 are calculated as described above, the correction coefficients (Co(R), Co(B), Co(G)) are calculated as in the above-mentioned equations (4), (5), and (6).

[0104] Fig.131 is a flowchart showing the flow of processing related to sensor scanning of the object SUB. In this processing, first, the object SUB is placed between the sensor panel 10 and the light source panel 20 (step S21).

[0105] Next, set Figure 6 The lighting control period of the light source 22 corresponding to the "lighting mode 1" shown in step S22 (step S22), that is, the lighting period of the first light source 22R. Thereafter, a sensor scan is performed to generate an output signal indicating the degree of intensity of the light detected during step S22 (step S23). Thereafter, data reflecting the output of the sensor scan in step S23 is transmitted from the detection circuit 15 to the information processing device 30 (step S24).

[0106] In addition, setting Figure 6 The lighting control period of the light source 22 corresponding to the "lighting mode 2" shown in step S25, that is, the lighting period of the second light source 22G. After that, a sensor scan is performed to generate an output signal indicating the intensity of the light detected during step S25 (step S26). After that, data reflecting the output of the sensor scan in step S26 is transmitted from the detection circuit 15 to the information processing device 30 (step S27).

[0107] In addition, setting Figure 6 The lighting control period of the light source 22 corresponding to the "lighting mode 3" shown in step S28, that is, the lighting period of the third light source 22B. After that, a sensor scan is performed to generate an output signal indicating the intensity of the light detected during step S28 (step S29). After that, data reflecting the output of the sensor scan in step S29 is transmitted from the detection circuit 15 to the information processing device 30 (step S30).

[0108] The information processing device 30 combines the data transmitted in the processing of step S24, step S27, and step S30 (step S31). In the processing of step S31, the correction coefficient of the signal strength calculated by the processing of step S11 is reflected. Specifically, in the output of the sensor scan obtained by the processing of step S23, Co(R) calculated individually for each sensor unit WA is applied individually to the output of each sensor unit WA. It should be noted that, as shown in FIG. Fig. 9As described, in the case of calculating the correction coefficient corresponding to the graph RP1, the correction based on the application of Co(R) is omitted. In addition, in the output of the sensor scan obtained by the processing of step S26, Co(G) calculated individually for each sensor unit WA is applied individually to the output of each sensor unit WA. In addition, in the output of the sensor scan obtained by the processing of step S29, Co(B) calculated individually for each sensor unit WA is applied individually to the output of each sensor unit WA. Thus, data is obtained that represents the output of the sensor scan reflecting the color of the object SUB to be detected and in which the influence caused by the deviation of the brightness of the first light source 22R, the second light source 22G, and the third light source 22B is suppressed.

[0109] Next, refer to Fig.14 and Fig.15 The following describes the situation where the signal strength correction and data merging are performed by the detection circuit 15. Fig.14 and Fig.15 In the description of Fig.12 and Fig.13 The differences described are explained.

[0110] Fig.14 1 is a flowchart showing the flow of processing related to sensor scanning for correcting signal strength. In the case where correction of signal strength is performed by the detection circuit 15, reference is omitted. Fig.12 The processing of step S4, step S7, and step S10 described above is performed in the same manner as in the reference except that the processing subject of step S11 is the detection circuit 15 instead of the information processing device 30. Fig.12 Therefore, in this case, if Fig.14 As shown, the processing is performed in the order of step S1, step S2, step S3, step S5, step S6, step S8, step S9, and step S11.

[0111] Fig.15 1 is a flowchart showing the flow of processing related to the sensor scanning of the detected object SUB. Fig.13 The processing of step S24, step S27, and step S30 described above is performed in the same manner as in the reference except that the processing subject of step S31 is not the information processing device 30 but the detection circuit 15, and the processing of step S32 is added. Fig.12 Therefore, in this case, if Fig.15 As shown, the processing is performed in the order of step S21, step S22, step S23, step S25, step S26, step S28, step S29, step S31, and step S32.

[0112] In the process of step S32, the data obtained by the process of step S31 is transmitted from the detection circuit 15 to the information processing device 30. That is, the data indicating the output of the sensor scan reflecting the color of the object SUB is transmitted from the detection circuit 15 to the information processing device 30.

[0113] As described above, according to an embodiment, a detection device (e.g., detection device 60) comprises: a sensor unit (e.g., sensor unit WA), a photodiode (PD82) for detecting light being arranged in the sensor unit, and the sensor unit generating an output corresponding to the degree of light detected; a detection circuit 15 for acquiring the output of the sensor unit; and a light source (e.g., light source 22) capable of switchably emitting light of a first color (e.g., red (R)), light of a second color (e.g., green (G)), and light of a third color (e.g., blue (B)).

[0114] In the embodiment, the detection circuit 15 separately obtains the first output, the second output, and the third output. The first output is the output of the sensor unit corresponding to the period of emitting the light of the first color (e.g., red (R)). The second output is the output of the sensor unit corresponding to the period of emitting the light of the second color (e.g., green (G)). The third output is the output of the sensor unit corresponding to the period of emitting the light of the third color (e.g., blue (B)). In addition, the detection circuit 15 corrects at least two of the first output, the second output, and the third output based on the correction coefficient derived in such a way that the fourth output, the fifth output, and the sixth output become the same, thereby suppressing the influence caused by the brightness deviation of the light source emitting the first color (e.g., the first light source 22R), the light source emitting the second color (e.g., the second light source 22G), and the light source emitting the third color (e.g., the third light source 22B). Therefore, the detection accuracy of the color can be further improved. The fourth output is the output of the sensor unit when the light of the first color is directly irradiated from the light source (e.g., the first light source 22R) by the sensor unit. The fifth output is an output when the sensor unit is directly irradiated with the light of the second color from a light source (for example, the second light source 22G). The sixth output is an output when the sensor unit is directly irradiated with the light of the third color from a light source (for example, the third light source 22B).

[0115] In addition, a sensor panel (e.g., sensor panel 10) is provided, the sensor panel having a detection area (e.g., detection area SA) provided with a plurality of sensor units (e.g., sensor unit WA), the correction coefficient corresponds to the average value (AVE) of the outputs of the plurality of sensor units, and the detection circuit corrects the first output, the second output, and the third output, thereby being able to further reduce the correction degree of the first output, the second output, and the third output. Therefore, it is possible to more accurately suppress the distortion of the output caused by the correction.

[0116] In addition, a sensor panel (e.g., sensor panel 10) is provided, wherein the sensor panel has a detection area (e.g., detection area SA) provided with a plurality of sensor units (e.g., sensor unit WA), and a correction coefficient corresponds to a brightness distribution of the light of the first color in the detection area when a fourth output is obtained (e.g., graph RP1), wherein the fourth output is the output of the sensor unit when light of the first color (e.g., red (R)) is directly irradiated from a light source (e.g., first light source 22R) to the sensor unit, and the detection circuit corrects the second output and the third output, thereby omitting the correction of the first output and further reducing the processing load involved in the correction.

[0117] In addition, the first color is red (R), the second color is green (G), and the third color is blue (B), thereby obtaining color information based on so-called RGB. That is, color information based on so-called RGB can be obtained by a sensor unit (such as sensor unit WA) that is not provided for each color.

[0118] In addition, in the embodiment, the detection system 1 includes an information processing device (information processing device 30) connected to the detection device (for example, the detection device 60). The detection circuit 15 of the detection device separately obtains the first output, the second output, and the third output. The first output is the output of the sensor unit corresponding to the period of emitting the light of the first color (for example, red (R)). The second output is the output of the sensor unit corresponding to the period of emitting the light of the second color (for example, green (G)). The third output is the output of the sensor unit corresponding to the period of emitting the light of the third color (for example, blue (B)). And, the information processing device (information processing device 30) corrects the data corresponding to at least two of the first output, the second output, and the third output based on the correction coefficient derived in such a way that the fourth output, the fifth output, and the sixth output become the same, thereby suppressing the influence caused by the brightness deviation of the light source emitting the first color (for example, the first light source 22R), the light source emitting the second color (for example, the second light source 22G), and the light source emitting the third color (for example, the third light source 22B). Therefore, the detection accuracy of the color can be further improved. The fourth output is the output of the sensor unit when the light of the first color is directly irradiated from the light source (e.g., the first light source 22R). The fifth output is the output of the sensor unit when the light of the second color is directly irradiated from the light source (e.g., the second light source 22G). The sixth output is the output of the sensor unit when the light of the third color is directly irradiated from the light source (e.g., the third light source 22B).

[0119] It should be noted that the specific configuration of the sensor unit WA is described in detail in Figure 2Among the specific configurations described in the embodiments, such as the specific configuration of the wiring area VA described above, configurations not specified in the claims can be appropriately changed within the scope of realizing the configurations specified in the claims.

[0120] In addition, regarding other effects brought about by the situations described in the present embodiment, it should be understood that the contents that are obvious from the description of this specification or that can be appropriately conceived by a person skilled in the art are brought about by the present disclosure.

Claims

1. A detection device, comprising: a sensor section in which a photodiode that detects light is provided and in which the sensor section generates an output corresponding to the degree of the detected light; A detection circuit for acquiring an output of the sensor unit; as well as a light source capable of switchably emitting light of a first color, light of a second color, and light of a third color, The detection circuit separately obtains the first output, the second output and the third output, The first output is an output of the sensor portion corresponding to a period in which light of the first color is emitted, The second output is an output of the sensor portion corresponding to a period in which the second color light is emitted. The third output is an output of the sensor unit corresponding to a period of emitting light of the third color, the detection circuit corrects at least two of the first output, the second output, and the third output based on a correction coefficient derived so as to make the fourth output, the fifth output, and the sixth output the same, The fourth output is an output when the sensor unit is directly irradiated with light of the first color from the light source, The fifth output is an output when the sensor unit is directly irradiated with light of the second color from the light source, The sixth output is an output when the sensor portion is directly irradiated with the light of the third color from the light source.

2. The detection device according to claim 1, wherein: The detection device includes a sensor panel having a detection area where a plurality of the sensor units are provided. The correction coefficient corresponds to an average value of outputs of the plurality of sensor units. The detection circuit corrects the first output, the second output, and the third output.

3. The detection device according to claim 1, wherein: The detection device includes a sensor panel having a detection area where a plurality of the sensor units are provided. The correction coefficient corresponds to the brightness distribution of the light of the first color in the detection area when the fourth output is obtained, The detection circuit corrects the second output and the third output.

4. The detection device according to claim 1, wherein: The first color is red, The second color is green, The third color is blue.

5. A detection system comprising a detection device and an information processing device connected to the detection device, The detection device comprises: a sensor section in which a photodiode that detects light is provided and in which the sensor section generates an output corresponding to the degree of the detected light; A detection circuit for acquiring an output of the sensor unit; as well as a light source capable of switchably emitting light of a first color, light of a second color, and light of a third color, The detection circuit separately obtains the first output, the second output, and the third output, and transmits data corresponding to each output to the information processing device, The first output is an output of the sensor unit corresponding to a period of emitting light of the first color, The second output is an output of the sensor portion corresponding to a period in which the light of the second color is emitted, The third output is an output of the sensor unit corresponding to a period of emitting light of the third color, the information processing device correcting data corresponding to at least two or more of the first output, the second output, and the third output based on a correction coefficient derived so as to make a fourth output, a fifth output, and a sixth output the same, The fourth output is an output when the sensor unit is directly irradiated with light of the first color from the light source, The fifth output is an output when the sensor unit is directly irradiated with light of the second color from the light source, The sixth output is an output when the sensor portion is directly irradiated with the light of the third color from the light source.

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