Infrared lamp tube and infrared touch frame

Abstract

The embodiment of the invention provides an infrared lamp tube and an infrared touch frame, the infrared lamp tube comprises an infrared emission tube, the infrared emission tube comprises a light-emitting chip and a lampshade covering the light-emitting chip, the lampshade comprises a lampshade body of a symmetrical structure, the infrared emission tube comprises a first emission angle, and the first emission angle is larger than the second emission angle. The infrared light emitted within the first emission angle intersects with the cover body; within the first emission angle, the signal intensity of the infrared light emitted by the infrared emission tube and the emission angle are distributed in a positive correlation trend. In the embodiment of the invention, as the signal intensity of the infrared light emitted by the infrared emission tube changes along with the change of the emission angle, the energy utilization rate of the lamp tube can be improved without increasing the power of the lamp tube by reasonably utilizing the energy of the infrared emission tube at different emission angles, so that the cost of the lamp tube is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of infrared lamps, and in particular to an infrared lamp and an infrared touch frame. Background Art

[0002] Infrared lamps can be used in various electronic devices, particularly touchscreen devices. For example, an infrared touchscreen device may include multiple distributed infrared lamps, each consisting of an infrared transmitter and an infrared receiver. Under the control of a controller, the infrared transmitter emits infrared light, which is then converted into an electrical signal by the corresponding infrared receiver. The converted signal is amplified and gain-adjusted. The controller then collects and processes the adjusted infrared light, detecting changes in the infrared light to determine whether it is blocked by the touch object, thereby enabling touch functions such as clicking, drawing, and touching.

[0003] The signal strength and quality of the signal emitted by the infrared emitting tube directly affect the results of the controller's acquisition and processing, which is ultimately reflected in the performance of the touch device, such as click accuracy, writing precision, and line drawing effect. The inventors have discovered that in actual applications, the infrared emitting tube on this side sends infrared light to the opposite side. Among the infrared light emitted at the same time, the greater the angle between the infrared light and the central axis of the lamp tube, the weaker the intensity of the infrared light received by the infrared receiving tube on the opposite side. Currently, the only way to ensure that the intensity of the infrared light at the maximum angle can meet the requirements is to continuously increase the power of the lamp in the infrared emitting tube, which will undoubtedly lead to a sharp increase in the cost of the infrared emitting tube. Summary of the Invention

[0004] In order to overcome the problems existing in the related art, the present application provides an infrared lamp tube and an infrared touch frame, which can improve the energy utilization rate of the lamp tube and reduce the cost of the lamp tube without increasing the power of the lamp tube.

[0005] According to a first aspect of an embodiment of the present application, an infrared lamp is provided, comprising an infrared emitting tube, the infrared emitting tube comprising a light-emitting chip and a lampshade covering the light-emitting chip, the lampshade comprising a symmetrically structured cover body, the infrared emitting tube comprising a first emission angle, infrared light emitted within the first emission angle intersecting the cover body; within the first emission angle, the signal intensity of the infrared light emitted by the infrared emitting tube is positively correlated with the emission angle;

[0006] The emission angle is the angle formed by the infrared light emitted by the infrared emitting tube and the central axis of the lamp tube.

[0007] According to a second aspect of an embodiment of the present application, an infrared touch frame is provided, comprising at least one X-axis infrared touch panel, wherein at least one first infrared emitting lamp is disposed on the X-axis infrared touch panel; the first infrared emitting lamp comprises a first cover having a symmetrical structure; the first infrared emitting lamp has a first emission angle, and infrared light emitted within the first emission angle intersects the first cover; within the first emission angle, the signal intensity of the infrared light emitted by the first infrared emitting lamp is positively correlated with the emission angle;

[0008] The emission angle is an angle formed by the infrared light emitted by the first infrared emission lamp and the central axis of the first infrared emission lamp.

[0009] The infrared lamp tube and infrared touch frame of the embodiment of the present application, in the application scenario of the wide-angle infrared lamp tube, by designing a new type of infrared lamp tube, because within the first emission angle, the signal intensity of the infrared light emitted by the infrared emitting tube is positively correlated with the emission angle, the energy of the infrared emitting tube can be reasonably utilized at different emission angles, thereby improving the energy utilization rate of the lamp tube without increasing the power of the lamp tube, thereby reducing the cost of the lamp tube.

[0010] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application.

[0011] For better understanding and implementation, the technical solution of the present application is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the arrangement of infrared lamps in an infrared touch frame in the prior art;

[0013] Figure 2 This is a schematic diagram of another arrangement of infrared lamps in an infrared touch frame in the prior art;

[0014] Figure 3 This is a schematic diagram of the use angle of the infrared emitting tube lamp in the related art;

[0015] Figure 4 This is a schematic diagram of an infrared lamp according to an exemplary embodiment of the present application;

[0016] Figure 5 This is a comparative diagram showing the relationship between light intensity attenuation and distance and the relationship between required light intensity and distance, shown in one embodiment of the present application;

[0017] Figure 6A The relationship between the first emission angle and the second emission angle of the infrared emitting tube at different positions according to an exemplary embodiment of the present application is shown;

[0018] Figure 6B is a schematic diagram showing the correspondence between two angles and light intensity according to an exemplary embodiment of the present application;

[0019] Figure 7 This is a schematic diagram showing the correspondence between angle and light intensity according to an exemplary embodiment of the present application;

[0020] Figure 8 is another schematic diagram showing the correspondence between angle and light intensity according to an exemplary embodiment of the present application;

[0021] Figure 9 1 is a schematic diagram of an M-shaped lampshade according to an exemplary embodiment of the present application;

[0022] Figure 10 This is a schematic diagram of another M-shaped lampshade according to an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

[0024] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are protected by this application.

[0025] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0026] In the description of this application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. The singular forms "a", "said", and "the" used in this application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. The words "if" / "if" used herein can be interpreted as "at the time of" or "when" or "in response to determination". In addition, in the description of this application, unless otherwise specified, "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0027] In many electronic devices, infrared lamps are provided. The infrared lamps may include infrared emitting tubes and photosensitive receiving tubes, or infrared receiving tubes, or infrared receiving heads. Infrared lamps can be used in a variety of application scenarios such as touch, remote control, security monitoring, and smart home. The embodiment of the present application can be applied to an infrared touch frame. In the infrared touch frame, by providing multiple infrared emitting tubes and multiple infrared receiving tubes on the four frames of the frame, the infrared emitting tubes are controlled to emit infrared light, and the infrared receiving tubes are controlled to receive infrared light, and then according to the changes in the infrared light received by each infrared receiving tube, whether a touch operation occurs is calculated. When an infrared emitting tube emits and multiple infrared receiving tubes receive infrared light at the same time, since the intensity of the light emitted by a traditional infrared emitting tube is distributed in a single sine wave (i.e., a half-cycle sine wave), the signal intensity in the direction of the lamp axis is the largest, and the signal intensity away from the lamp axis gradually decreases. Moreover, the distance between the infrared emitting tube and the infrared receiving tube facing it is the shortest, and the infrared receiving tubes distributed on both sides of the axis of the infrared emitting tube are farther away from the infrared emitting tube. That is, within the emission angle of a certain infrared emitting tube, the larger the emission angle, the lower the signal strength received by the infrared receiving tube corresponding to the emission angle. The emission angle can be the angle formed by the infrared light emitted by the infrared emitting tube and the central axis of the lamp tube.

[0028] Among them, in the related art, there are many ways to set the infrared emitting tube and the infrared receiving tube on the four borders of the infrared touch frame. Figure 1 As shown, the infrared emitting tube and the infrared receiving tube are respectively arranged on two opposite sides of the touch frame; Figure 2 As shown, the infrared emitting tubes and the infrared receiving tubes are arranged alternately on the same side of the touch frame, wherein, Figure 1 and Figure 2 In the figure, the white circle represents the infrared emitting tube, and the black circle represents the infrared receiving tube. As the infrared lamps of the infrared touch frame are used at increasingly wider angles, it is often required that the infrared light emitted by the infrared emitting tube on one side can cover most or even all of the infrared receiving tubes on the opposite side. For example, the infrared emitting tube and the infrared receiving tube are respectively set on opposite sides of the touch frame, as shown in the figure. Figure 3As shown in the figure, it is a schematic diagram of the use angle of the infrared emitting tube lamp in the related art. In this diagram, the use angle A is the maximum angle of the infrared emitting tube P on the X-axis, and the use angle B is the maximum angle of the infrared emitting tube Q on the Y-axis. At present, the only way to ensure that the light intensity of the infrared light at the maximum angle can meet the requirements is to continuously increase the power of the lamp in the infrared emitting tube. This will undoubtedly lead to a sharp increase in the cost of the infrared emitting tube, and when the intensity of the received signal of the infrared receiving tube at the maximum angle meets the requirements, it will often cause the infrared receiving tube directly opposite the infrared emitting tube to be saturated due to excessive signal intensity, and thus cannot work normally. The inventor analyzed the infrared light of the existing infrared emitting tube and found that in actual use, the angle corresponding to the longest distance for the infrared light to reach the opposite infrared receiving tube is not 0°, but the angle corresponding to the maximum emission energy of the infrared emitting tube is around 0°. Taking one of the touch frame's operating angles as an example, for example, the maximum operating angle A on the X-axis is 120°. The emission angle of the infrared emitting tube can be expressed as [-60°, +60°]. On the X-axis, the angle corresponding to the longest distance for the infrared light to reach the opposite infrared receiving tube is ±60°, while the angle corresponding to the maximum emission energy of the infrared emitting tube is near 0°. For another example, the maximum operating angle on the Y-axis can reach 60°. That is, the emission angle of the infrared emitting tube can be expressed as [-30°, +30°]. On the Y-axis, the angle corresponding to the longest distance for the infrared light to reach the opposite infrared receiving tube is ±30°, while the angle corresponding to the maximum emission energy of the infrared emitting tube is near 0°. The emission angle is the angle formed by the infrared light emitted by the infrared emitting tube and the centerline of the lamp tube. Analysis found that when the X-axis is near the two angles of ±60°, the transmission and reception distances are also the farthest. When the Y-axis is near the two angles of ±30°, the corresponding transmission and reception are also the farthest. However, the intensity of the infrared light is the weakest at this time.

[0029] Based on this, the present application provides a new type of infrared lamp. The applicant found that when manufacturing the infrared lamp, the signal intensity of the infrared light emitted by the infrared emitting tube can be made to change with the change of the emission angle. In the infrared light emitted at the same time, within the first emission angle, the signal intensity of the infrared light emitted by the infrared emitting tube is positively correlated with the emission angle. The emission angle is the angle formed by the infrared light emitted by the infrared emitting tube and the central axis of the lamp tube. By rationally utilizing the energy of the infrared emitting tube at different emission angles, it is possible to improve the energy utilization rate of the lamp without increasing the power of the lamp, thereby reducing the cost of the lamp. It can also avoid the situation where the infrared receiving tube facing the infrared emitting tube fails to work normally due to excessive signal strength when the intensity of the received signal of the infrared receiving tube at the largest angle meets the requirements.

[0030] In one embodiment, Figure 4FIG2 is a schematic diagram of an infrared lamp according to an exemplary embodiment of the present application. The infrared lamp includes an infrared emitting tube, which includes a light-emitting chip 41 and a lampshade 42 covering the light-emitting chip 41. The lampshade 42 includes a symmetrically structured cover. The infrared emitting tube has a first emission angle, within which infrared light emitted intersects with the cover. Within the first emission angle, the signal intensity of the infrared light emitted by the infrared emitting tube is positively correlated with the emission angle.

[0031] Among them, the emission angle is the angle formed by the infrared light emitted by the infrared emitting tube and the central axis of the lamp tube. The first emission angle can be an angle range, and the first emission angle can include multiple emission angles. The positive correlation trend can be: as the emission angle increases, the signal intensity of the infrared light tends to increase as a whole. For example, as the emission angle increases, the signal intensity of the infrared light also increases, and the signal intensity of the infrared light corresponding to different emission angles is different. For another example, as the emission angle increases, the signal intensity of the infrared light corresponding to some emission angles increases, and the signal intensity of the infrared light corresponding to some adjacent emission angles is the same. It can be understood that if the angles on both sides of the central axis of the lamp tube are expressed in positive and negative angles, the comparison between the emission angles is in the form of absolute values. For example, taking [-30°, +30°] as an example, |-30°|>|-20°|.

[0032] The maximum angle in the first emission angle can be the preset maximum angle corresponding to the point where the signal strength is expected to be the maximum. The maximum signal strength can correspond to one angle or multiple angles. For example, the angle corresponding to the farthest distance between the infrared emitting tube and the infrared receiving tube can be the angle corresponding to the point where the signal strength is expected to be the maximum. Figure 3Taking point P as an example, in some scenarios, the infrared light emitted by the infrared emitting diode on the X-axis (the long side of the touch frame) can cover all infrared receiving diodes on the opposite X-axis. In this case, the first emission angle of the emitting diode at point P can be: 0° to |±60°|. In this scenario, the maximum angle in the first emission angle can be the emission angle corresponding to the maximum distance between the infrared emitting diode and the infrared receiving diode. In another application scenario, the infrared light emitted by the infrared emitting diode on the X-axis only needs to cover some of the infrared receiving diodes on the opposite X-axis. For example, the first emission angle of the emitting diode at point P can be: 0° to |±45°|. This first emission angle can be set according to the different requirements of different application scenarios. Infrared emitting diodes of the same or different light types can be used at different positions on the X-axis. For example, the first emission angle of the infrared emitting diode to the right of point P can have a larger negative emission angle range than the positive emission angle range, such as [-60°, +30°]. The specific value can be determined by the specific position of the infrared emitting diode on the X-axis and the area that the infrared emitting diode needs to cover when transmitting infrared light to the opposite side. Therefore, the absolute value of the minimum negative emission angle and the maximum positive emission angle in the first emission angle can be the same or different. This embodiment improves the energy utilization of the lamp without increasing the lamp power, and can realize the application of large-angle lamps in infrared touch frames.

[0033] Within the first emission angle, the signal strength of the infrared light generally increases with increasing emission angle. Therefore, within the first emission angle, the signal strength of the infrared light may increase with increasing emission angle, or the signal strength of the infrared light corresponding to some adjacent emission angles may be the same.

[0034] For example, in one embodiment, the signal intensity of the infrared light corresponding to the emission angle can be adjusted according to the emission angle interval, and the signal intensity of the infrared light corresponding to the emission angle within the same emission angle interval is the same. Among the emission angles in adjacent emission angle intervals, the signal intensity of the infrared light corresponding to the emission angle interval with a larger angle is larger. Alternatively, within the emission angle interval with a smaller emission angle (such as the emission angle near the center axis of the lamp tube), the signal intensity of the infrared light corresponding to different emission angles can be the same. Within the emission angle interval with a larger emission angle, the signal intensity of the infrared light can increase with the increase of the emission angle, and when the emission angle is the largest, the signal intensity corresponding to the infrared angle reaches the maximum. How to specifically configure the signal intensity of the infrared light corresponding to different emission angles can be determined in combination with the application scenario, which will not be elaborated here. This embodiment adjusts the relationship between signal intensity and angle according to the emission angle interval, which can reduce the difficulty of making an infrared emitting tube.

[0035] In another embodiment, the positive correlation trend distribution includes: within the first emission angle, the signal intensity of the infrared light with a large emission angle is greater than the signal intensity of the infrared light with a small emission angle, and the signal intensity of the infrared light with the largest emission angle is the largest; wherein the maximum angle in the first emission angle is a preset angle corresponding to the desired maximum signal intensity. This embodiment is configured so that the signal intensity of the infrared light increases with the increase of the emission angle, which can fully utilize the energy of the infrared emitting tube, achieving a high signal intensity of the infrared light at a distant location and a low signal intensity of the infrared light at a close location, thereby improving the energy utilization rate of the infrared emitting tube and making the signals received by the multiple infrared receiving tubes corresponding to the same infrared emitting tube more uniform.

[0036] Specifically, in one example, the positive correlation between signal strength and emission angle can be determined by the relationship between light intensity and distance. The relationship between light intensity and distance can be derived from the definition of luminous flux and the definition of light intensity. Luminous flux is the amount of light energy passing through a surface per unit time. For a spherical light source, the luminous flux is related to the total power of all light emitted by the light source. Light intensity refers to the luminous flux per unit solid angle. The solid angle refers to the spatial angle occupied by a cone with the light source as the vertex, which is related to the direction and angle of light propagation. When the radiation distance of light increases, if the luminous flux of the light source remains unchanged, the amount of light received per unit solid angle will decrease due to the diffusion of the light propagation direction, so that the light intensity decreases with increasing distance. Light intensity is inversely correlated with distance. For example, light intensity is inversely proportional to the square of the distance, which can be expressed by the following formula: I1 / I2=(d2 / d1)2. This embodiment can use the relationship between light intensity and distance to obtain the positive correlation between the required light intensity and distance, and then by converting the distance into an emission angle, the relationship between the required light intensity and the emission angle can be obtained. For example Figure 5 The figure shows a comparative diagram of the relationship between light intensity attenuation and distance, and the relationship between required light intensity and distance, shown in one embodiment of the present application. This embodiment uses the attenuation relationship between light intensity and distance to determine the positive correlation between the required signal strength and emission angle, which can fully utilize the energy of the lamp tube, thereby further improving the energy utilization rate of the infrared emitting tube.

[0037] It is understood that the infrared emitting tube of the embodiment of the present application satisfies the following conditions: within the first emission angle, the signal intensity of the infrared light emitted at the same time is greater than or equal to the signal intensity of the infrared light with a smaller emission angle, and the signal intensity of the infrared light with the largest emission angle is the greatest. Within the first emission angle, this correspondence between signal intensity and angle can be viewed as a V-shaped correspondence, with two light intensity peaks. In the actual production of the infrared emitting tube, the angle of the V can be adjusted according to needs to adapt to different application scenarios, which are not listed here one by one.

[0038] In practical applications, the first emission angle can be determined by the preset angle corresponding to the point where the signal intensity is expected to be maximum. The preset angle corresponding to the point where the signal intensity is expected to be maximum can be the peak angle in the light type. The signal intensity corresponding to the peak angle is the maximum. At this time, it can be achieved that in the desired coverage of the receiving tube on the opposite side, the signal intensity emitted at the angle where the distance between the infrared emitting tube on this side and the infrared receiving tube on the opposite side is the largest is the maximum. For example, the infrared emitting tube located in the middle of the long side (X-axis) has an emission angle that covers all the infrared receiving tubes on the opposite side. The specific number of infrared receiving tubes on the opposite side that are expected to be covered can be determined according to different application scenarios and the location of the infrared emitting tube on this side. As for the infrared emitting tubes located on both sides of the long side (X-axis) or on the short side (Y-axis), within their emission angle, they not only cover part of the infrared receiving tubes on the opposite side, but also cover the infrared receiving tubes on the adjacent side. For example, the emission angle of the infrared emitting tube on the short side (Y-axis) simultaneously covers part of the infrared receiving tubes on the long side (X-axis) and part of the infrared receiving tubes on the opposite side (Y-axis). Because the distance it covers the infrared receiving tubes on the long side (X-axis) is often smaller than the distance it covers the infrared receiving tubes on the opposite side (Y-axis), and the emission angle covering the infrared receiving tubes on the opposite side is smaller than the emission angle covering the adjacent side, this will result in the signal strength requirement decreasing as the emission angle increases within the emission angle covering the adjacent side. Therefore, we introduce the concept of a second emission angle, which specifically refers to the emission angle covering the infrared receiving tubes on the adjacent side. Similarly, if the infrared emitting tubes are arranged on both sides of the long side (X-axis), their emission angle will cover the infrared receiving tubes on the opposite side and the adjacent side.

[0039] In different application scenarios, the second emission angle may or may not exist. Figure 6A As shown, for transmitter P on the long side of the touch frame, with the Y-axis as its central axis and the central axis at zero degrees, its maximum emission angle range of [0 to α] can cover the infrared receiver on the opposite side. At α, the infrared light emitted by transmitter P reaches the farthest distance to the opposite side, which can be the peak signal strength. In this example, the second emission angle can be absent, and the first emission angle can be [0 to α]. For another example, for transmitter Q on the short side of the touch frame, with the X-axis as its central axis and the central axis at zero degrees, its maximum emission angle range (0 to α) can cover both the infrared receiver on the opposite side and the adjacent infrared receivers. However, at α, the infrared light emitted by transmitter Q does not reach the farthest distance to the opposite side. It reaches the farthest distance at β. In this scenario, the first emission angle can be [0 to β], and the second emission angle can be (β to α).

[0040] In view of this, in an optional embodiment, with the central axis of the transmitting tube as zero degrees, the first transmitting angle can be 0°~|N°|, the second transmitting angle can be |N°|~|M°|, |N°|≤|M°|; the |N°| is the preset maximum angle corresponding to the point where the signal strength is expected to be maximum, the maximum signal strength can correspond to one or more angles, and the |M°| is the maximum value of the effective transmitting angle. The infrared transmitting tube also satisfies: when |N°| and |M°| are different, within |N°|~|M°|, the signal intensity of the infrared light with a large transmitting angle is less than or equal to the signal intensity of the infrared light with a small transmitting angle. This embodiment can achieve maximum signal utilization, achieve the strongest signal intensity at the longest distance, avoid the situation of insufficient signal margin, and achieve that the signals received by all infrared receiving tubes corresponding to the same infrared transmitting tube are relatively uniform, which is convenient for back-end processing.

[0041] In an optional embodiment, within |N°| to |M°|, the signal intensity of the infrared light is less than or equal to the signal intensity of the infrared light near the central axis of the lamp tube. The distance from the infrared emitting tube to the infrared receiving tube corresponding to |N°| to |M°| is mostly shorter than the distance from the infrared emitting tube to the infrared receiving tube corresponding to the central axis. Therefore, by configuring: within |N°| to |M°|, the signal intensity of the infrared light is less than or equal to the signal intensity of the infrared light near the central axis of the lamp tube, the energy of the infrared emitting tube is reasonably utilized, and the signal intensity of the infrared light at a long distance is greater than the signal intensity of the infrared light at a short distance. Among them, the specific range near the central axis of the lamp tube can be pre-configured according to needs and will not be described in detail here.

[0042] The union of the first and second emission angles represents the desired angle at which the infrared emitting tube emits infrared light. The actual emission angle of the infrared emitting tube may be exactly equal to the second emission angle, or it may be greater than the desired angle. Infrared light emitted within the first and second emission angles is expected to be received by the infrared receiving tube on the opposite side. The union of the first and second emission angles can be considered the effective emission angle. The portion of the actual emission angle of the infrared emitting tube that excludes the effective emission angle is called the invalid emission angle. Infrared light emitted within the invalid emission angle may be considered insignificant. For infrared light within this range, in one example, the infrared emitting tube may also satisfy the following requirements: within the invalid emission angle, the signal intensity of infrared light with a larger emission angle is less than or equal to the signal intensity of infrared light with a smaller emission angle, and the signal intensity of infrared light with the largest emission angle is the lowest or zero. In one example, the invalid emission angle is between |M°| and |P°|, and the decreasing trend of signal intensity within |M°| and |P°| is greater than that within |N°| and |M°|. This allows the signal strength to drop rapidly within the invalid transmission angle, thus saving energy.

[0043] Within the entire emission angle of the infrared emitting tube, the correspondence between signal intensity and angle can be similarly regarded as an M-type correspondence, which can have two light intensity peaks. For example, within the first emission angle of 0°~|N°|, the signal intensity of the infrared light with a large emission angle is greater than or equal to the signal intensity of the infrared light with a small emission angle, and the signal intensity of the infrared light with the largest emission angle is the largest. Within |N°|~|M°|, the signal intensity of the infrared light with a large emission angle is less than or equal to the signal intensity of the infrared light with a small emission angle. Within the invalid emission angle |M°|~|P°|, the signal intensity of the infrared light with a large emission angle is less than or equal to the signal intensity of the infrared light with a small emission angle, and the signal intensity of the infrared light with the largest emission angle is the smallest or zero. The decreasing trend of signal intensity within |M°|~|P°| is greater than the decreasing trend within |N°|~|M°|. In the actual production of infrared emitting tubes, the angle of the V in the middle of the M light type can be adjusted according to needs to adapt to different application situations, which are not listed here one by one. For example Figure 6BAs shown, this application shows two schematic diagrams of the correspondence between angles and light intensities according to an exemplary embodiment. When N° is equal to M°, the correspondence between signal strength and angle can be similarly regarded as a linear M-type correspondence. When |N°<|M°|, the correspondence between signal strength and angle can be similarly regarded as a curved M-type correspondence. The decreasing trend of signal strength in the range of |M°|~|P°| is greater than the decreasing trend in the range of |N°|~|M°|. Which light type to use can be determined according to the application scenario. For example, the light type of the infrared emitting lamp on the X-axis of the infrared touch frame can be a linear M-type, and the light type of the infrared emitting lamp on the Y-axis of the infrared touch frame can be a curved M-type.

[0044] In actual applications, infrared emitting tubes on the same side of the touch frame can be installed according to a unified standard. For example, for infrared emitting tubes on the long side of the touch frame, it is often desirable to install the infrared emitting tubes so that their central axis is parallel to the short side of the touch frame, and their mounting position is completely aligned with the long side of the touch frame. However, the infrared emitting tubes may be offset during installation. To prevent the infrared light emitted by the infrared emitting tubes from being properly received by the infrared receiving tubes on the opposite side due to installation offset, in one embodiment, the infrared emitting tubes emit infrared light not only in the horizontal plane but also in the vertical plane. This ensures that the infrared light emitted by the infrared emitting tubes is not a flat light but a three-dimensional light, thus avoiding the situation where the infrared light emitted by the infrared emitting tubes cannot be properly received by the infrared receiving tubes on the opposite side due to installation errors. To avoid energy waste, the infrared emitting tubes can be used at a larger angle in the horizontal direction than in the vertical direction. For ease of understanding, the angle formed by the infrared light emitted by the infrared emitting tubes in the horizontal plane and the central axis of the lamp is called the horizontal emission angle, and the angle formed by the infrared light emitted by the infrared emitting tubes in the vertical plane and the central axis of the lamp is called the vertical emission angle. For example, when the infrared emitting tube is installed on the touch screen as desired, the above-mentioned horizontal plane can be understood as the plane formed by the touch screen frame, that is, the plane formed by the X-axis and Y-axis of the touch screen, and the above-mentioned vertical plane can be understood as the plane perpendicular to the touch screen frame, that is, the plane where the Z-axis of the touch screen is located.

[0045] Based on this, in one embodiment, not only can the infrared light emitted from the horizontal plane be designed with a light pattern, such as a light pattern with two light intensity peaks, but the infrared light emitted from the vertical plane can also be designed with a light pattern with two light intensity peaks. This not only improves the energy utilization rate of the horizontal plane, but also improves the energy utilization rate of the vertical plane. Specifically, the first emission angle includes a first emission angle of the horizontal plane and a first emission angle of the vertical plane, and the first emission angle of the horizontal plane is greater than the first emission angle of the vertical plane. Among the infrared light emitted by the infrared emitting tube on the horizontal plane each time, within the first emission angle of the horizontal plane, the signal intensity of the infrared light with a large horizontal emission angle is greater than or equal to the signal intensity of the infrared light with a small horizontal emission angle, and the signal intensity of the infrared light with the largest horizontal emission angle is the largest. Among the infrared light emitted by the infrared emitting tube on the vertical plane each time, within the first emission angle of the vertical plane, the signal intensity of the infrared light with a large vertical emission angle is greater than or equal to the signal intensity of the infrared light with a small vertical emission angle, and the signal intensity of the infrared light with the largest vertical emission angle is the largest.

[0046] Among them, the infrared light emitted by the infrared emitting tube in the horizontal plane is the main signal, and the infrared light emitted by the infrared emitting tube in the vertical plane can be a signal to compensate for installation errors. For this purpose, the first emission angle of the infrared emitting tube in the horizontal plane is greater than the first emission angle in the vertical plane.

[0047] For an infrared emitting tube or an infrared receiving tube, the larger the operating angle, the more corresponding light will be under the same number of tubes. If more physical information is required (the more light, the denser the light network), a larger operating angle is required. In view of this, in one example, the infrared emitting tube is used for an infrared touch screen, and the first emission angle of the horizontal plane is determined according to one or more factors including the frame size of the infrared touch screen, the preset light density, and the position of the infrared emitting tube in the infrared touch screen. For example, in one example, the first emission angle of the horizontal plane of the infrared emitting tube installed on the long side of the touch frame can be [-60°, 60°], that is, the angle usage range is 120°. In another example, even if the maximum operating angle is determined to be 120° based on the length of the touch frame opposite the infrared emitting tube, it can also be set to less than 120° according to demand, such as the first emission angle can be [-50°, 50°]. For example, the first emission angle of the horizontal plane of the infrared emitting tube installed on the short side of the touch frame can be [-30°, 30°], that is, the angle range is 60°; or the first emission angle of the horizontal plane of the infrared emitting tube installed on the short side of the touch frame can be [-35°, 35°], that is, the angle range is 70°. It is understandable that the horizontal angle of the infrared emitting tube can be configured according to different application scenarios, and the details are not detailed here.

[0048] In one example, the first emission angle of the infrared emitting tube in the vertical plane can be determined based on the maximum offset angle allowed when the infrared emitting tube is installed on the infrared touch screen. This embodiment determines the first emission angle of the infrared emitting tube in the vertical plane based on the maximum offset angle, ensuring that the infrared light emitted by the infrared emitting tube can be received by the infrared receiving tube while avoiding energy waste caused by excessive vertical angles. For example, in one example, the M° angle of the infrared emitting tube in the vertical plane can be no greater than 15°.

[0049] Take one of the combined embodiments as an example, Figure 7 As shown, this is a schematic diagram of the correspondence between angles and light intensity according to an exemplary embodiment of the present application. Taking the infrared emitting tube on the long side of the touch frame as an example, M°=N°. In this schematic diagram, there are light type curves 71 of the horizontal emission angle and light intensity, and light type curves 72 of the vertical emission angle and light intensity. For infrared light on the horizontal plane, there can be two peaks, such as reaching peak light intensity near ±60°. For infrared light on the vertical plane, there can be multiple emission angles corresponding to the same peak light intensity. The light type on the horizontal plane conforms to the fact that the light intensity increases as the angle expands to both sides, and in actual applications, the requirements of different angle peak points can be achieved by changing the size of the middle angle of the V in the M type, which are not listed here. As Figure 8 The figure shows another schematic diagram of the correspondence between angle and light intensity according to an exemplary embodiment of the present application. Taking the infrared emitting tube on the short side of the touch frame as an example, M°>N°. In this diagram, there is a light pattern curve 81 showing the horizontal emission angle and light intensity, and a light pattern curve 82 showing the vertical emission angle and light intensity. The invalid emission angle is |M°|~|P°|, and the decreasing trend of the signal intensity within |M°|~|P°| is greater than the decreasing trend within |N°|~|M°|.

[0050] Regarding how to make the infrared emitting tube in the infrared lamp tube, in one of the embodiments, the applicant found that when making the infrared lamp tube, the signal intensity of the infrared light emitted by the infrared emitting tube can be changed with the change of the emission angle by making a special setting of the lampshade part. For example, the lampshade is configured according to the first preset light type, so that the infrared light emitted by the infrared emitting tube meets the first preset light type. Among them, the lampshade can also be called the bulb head of the lamp tube, which can be the packaging part of the infrared emitting tube. For example, the infrared emitting tube can be obtained by simulating the first preset light type using preset optical software and adjusting the bulb head of the lamp tube. The first preset light type includes: the signal intensity of the infrared light emitted by the infrared emitting tube within the first emission angle is positively correlated with the emission angle. For example, optical simulation is performed using a given light source in optical software (such as ZEMAX), and then the bulb head of the lamp tube in the infrared emitting tube is adjusted to approach the first preset light type.

[0051] For example, in one embodiment, the direction of infrared light emitted by the light-emitting chip is observed through simulation software, and the curvature of the lampshade is adjusted. Different curvatures result in different angles of refraction of the light. Based on the relationship between signal intensity and emission angle in the first preset light pattern, the curvature of the lampshade is adjusted to control the refraction direction of the light so that the signal intensity required at different locations is associated with the amount of refracted light, thereby achieving more light refracted to locations where high signal intensity is required and less light refracted to locations where low signal intensity is required. As a result, the signal intensity of the infrared light emitted by the infrared emitting tube within the first emission angle can be distributed in a positively correlated trend with the emission angle. The first preset light pattern can be the light pattern of any of the above-mentioned embodiments. For example, the first preset light pattern can include a corresponding relationship between signal intensity and emission angle within the first emission angle; for example, the first preset light pattern can also include a corresponding relationship between signal intensity and emission angle within the second emission angle and / or invalid emission angle. It is understood that in addition to adjusting the curvature of the lampshade to achieve the first preset light pattern for the infrared emitting tube, other methods can also be used, which are not listed here.

[0052] Regarding the lampshade, in one example, the lampshade includes a cover body with an overall symmetrical structure. In another example, the lampshade includes a first cover body and a second cover body that are interconnected, and infrared light emitted within the first emission angle intersects with the first cover body or the second cover body. By interconnecting the first and second cover bodies, the infrared light emitted by the infrared emitting tube meets a first preset light pattern, which can reduce the difficulty of manufacturing the cover body. It is understood that the first preset light pattern can be any of the light patterns in the above-mentioned embodiments, and they are not listed here one by one.

[0053] Furthermore, the first cover body and the second cover body are symmetrically arranged, and the signal intensity distribution of the infrared light emitted by the first cover body and the second cover body is the same, so that the light pattern of the infrared emitting tube is a symmetrical light pattern.

[0054] Regarding the light-emitting chip, in one example, an infrared emitting tube can use a single light-emitting chip. Through this light-emitting chip and a lampshade covering the light-emitting chip, the infrared light emitted by the infrared emitting tube conforms to a first predetermined light pattern. In another example, the light-emitting chip includes a first light-emitting chip and a second light-emitting chip, with the first cover covering the first light-emitting chip and the second cover covering the second light-emitting chip. Using two light-emitting chips not only allows for the use of smaller chips, but also achieves better light uniformity.

[0055] Regarding the shape of the lampshade, in an embodiment in which the infrared emitting tube obtains the first preset light pattern by adjusting the curvature of the lampshade, if the scene in which the emission angle range is relatively small, the adjustment range of the lampshade is relatively small, and the change in the shape of the lampshade may not be very obvious. If the scene in which the emission angle range is relatively large, the difference between the signal strength at the closest distance and the signal strength at the farthest distance may be relatively large, then the adjustment range of the lampshade is relatively large, and the change in the shape of the lampshade may be relatively obvious. In one example, the lampshade can be arranged in an M-shaped curved surface. The curvature in the M-shaped curved surface is determined by the relationship between the emission angle and the signal intensity in the first preset light pattern based on the principle of refraction, so that more infrared light emitted through the lampshade can be refracted to a position where stronger light is required, and less light can be refracted to a position where less light intensity is required. By configuring the lampshade into an M-shaped curved surface, this embodiment can achieve an M-shaped correspondence between the signal intensity and the emission angle of the infrared emitting lamp, and the correspondence can have two light intensity peaks. The lampshade can be an integral M-shaped lampshade, or it can be an M-shaped lampshade comprising a first cover body and a second cover body. When actually making infrared emitting tubes, you can adjust the V angle in the middle of the M light pattern to suit different applications. To this end, you can configure different M-curved lampshades according to your needs. For example, Figure 9 The figure shows an M-shaped lampshade according to one embodiment of the present application. In this embodiment, the lampshade is symmetrically arranged and can be a single unit or composed of two symmetrical lampshades. This symmetrical arrangement ensures that the signal intensity of the infrared light emitted from both sides of the lampshade is uniformly distributed.

[0056] In order to adapt to certain scenarios, the angle of the V in the middle of the M light pattern needs to be adjusted. In one example, the cover body may further include a connecting portion, and the first cover body is connected to the second cover body through the connecting portion, and the connecting portion is arranged on the light-emitting chip. In this example, the light-emitting chip can emit infrared light through the connecting portion. By configuring connecting portions of different shapes, the V in the middle of the M light pattern of the infrared emitting tube can be different, thereby adapting to more application scenarios and achieving reasonable utilization of the energy of the light-emitting chip. Figure 10 FIG2 is a schematic diagram of an M-shaped lampshade according to another embodiment of the present invention. In this schematic diagram, the cover body may include a first cover body 11, a second cover body 12, and a connecting portion 13. It is understood that the shape of the connecting portion can be configured according to needs, and will not be described in detail here.

[0057] Furthermore, because the distance between the infrared light emitted by the connecting portion and the infrared receiving tube on the opposite side is often relatively short, in one example, the signal intensity of the infrared light emitted by the first and second covers is greater than or equal to the signal intensity of the infrared light emitted by the connecting portion. By limiting the signal intensity of the infrared light emitted by the connecting portion, light energy can be rationally utilized. In another example, the signal intensity of the infrared light emitted by the connecting portion is less than the maximum signal intensity of the infrared light emitted by the first and second covers, resulting in two signal intensity peaks at the first and second covers.

[0058] In one embodiment, the receiving sensitivity of the infrared receiving tube can also be adjusted. Specifically, the infrared lamp tube also includes an infrared receiving tube, which is obtained by simulating a second preset light pattern using preset optical software and adjusting the bulb head of the infrared receiving tube. The second preset light pattern includes a correspondence between receiving angle and receiving sensitivity. The infrared receiving tube satisfies the following conditions: within the effective receiving angle, the receiving sensitivity at a position corresponding to a large receiving angle is greater than or equal to the receiving sensitivity at a position corresponding to a small receiving angle, and the receiving sensitivity is greatest at a position corresponding to the maximum receiving angle.

[0059] It can be understood that what is adjusted for the infrared transmitting tube is the signal intensity of the infrared light corresponding to different angles, and what is adjusted for the infrared receiving tube is the receiving sensitivity. The relevant technologies are the same and will not be described in detail here.

[0060] The various technical features in the above embodiments can be combined arbitrarily as long as there is no conflict or contradiction between the combinations of features. However, due to space limitations, they are not described one by one. Therefore, the arbitrary combination of the various technical features in the above embodiments also falls within the scope of disclosure of this specification.

[0061] Corresponding to the aforementioned embodiments of the infrared light gain adjustment circuit, the present application also provides an embodiment of an infrared touch frame in which the same is applied. The infrared touch frame can include the infrared lamp of any of the aforementioned embodiments. Specifically, the infrared touch frame includes at least one X-axis infrared touch panel, with at least one first infrared emitting lamp disposed on the X-axis infrared touch panel. The first infrared emitting lamp includes a symmetrical first housing, and the first infrared emitting lamp has a first emission angle, within which infrared light emitted by the first infrared emitting lamp intersects the first housing. Within the first emission angle, the signal intensity of the infrared light emitted by the first infrared emitting lamp shows a positive correlation with the emission angle. The emission angle is the angle formed between the infrared light emitted by the first infrared emitting lamp and the central axis of the first infrared emitting lamp. In this embodiment, because the signal intensity of the infrared light emitted by the first infrared emitting lamp of the infrared touch frame varies with the emission angle, within the first emission angle, the signal intensities of the infrared light corresponding to adjacent emission angles can be the same, or the signal intensity of the infrared light corresponding to a larger emission angle can be greater. By rationally utilizing the energy of the infrared emitting lamp at different emission angles, the energy utilization rate of the lamp can be improved without increasing the lamp power, thereby reducing the lamp cost.

[0062] When the infrared emitting lamp on the short side of the infrared touch frame emits infrared light to the opposite short side, the larger the emission angle, the greater the distance to the opposite short side. However, if the infrared emitting lamp is used at a relatively large angle, infrared light can still be emitted to the adjacent two sides (the long side of the infrared touch frame). In this case, the larger the emission angle, the smaller the distance to the opposite short side. In order to further improve the energy utilization rate of the lamp tube, in one example, the infrared touch frame also includes at least one Y-axis infrared touch pad, and at least one second infrared emitting lamp is provided on the Y-axis infrared touch pad; the second infrared emitting lamp includes a second cover with a symmetrical structure, the second infrared emitting lamp includes a third emission angle and a fourth emission angle, and the infrared light emitted within the third emission angle and the fourth emission angle intersects with the second cover; within the third emission angle, the signal intensity of the infrared light emitted by the second infrared emitting lamp is positively correlated with the emission angle; within the fourth emission angle, the signal intensity of the infrared light emitted by the second infrared emitting lamp is negatively correlated with the emission angle; wherein the fourth emission angle is an angle interval adjacent to the third emission angle, and the emission angle within the fourth emission angle is greater than the emission angle within the third emission angle. The maximum angle among the third emission angles can be a preset angle corresponding to the desired maximum signal strength. The emission angle is the angle formed between the infrared light emitted by the infrared emitting tube and the central axis of the tube. The fourth emission angle can be the emission angle covering the infrared receiving tube on the adjacent side. The area covered by the infrared light emitted within the third and fourth emission angles can be an effective area, which is the area where infrared light is expected to be received. Therefore, the union of the third and fourth emission angles can also be understood as the effective emission angle.

[0063] Furthermore, because the distance that the infrared light emitted by the infrared emitting lamp on this side reaches the adjacent two sides is mostly short, the required light intensity is relatively weak. Therefore, in one example, the signal intensity of the infrared light emitted by the second infrared emitting lamp within the fourth emission angle is less than or equal to the signal intensity of the infrared light emitted by the second infrared emitting lamp near the axis. This further reduces the cost of the lamp tube.

[0064] It can be understood that the infrared touch frame can include the infrared lamp tube of any of the above embodiments, which are not listed here one by one.

[0065] Corresponding to the aforementioned embodiments of the infrared light gain adjustment circuit, the present application also provides embodiments of electronic devices to which the same is applied. The electronic device may include the infrared lamp tube of any of the aforementioned embodiments. Because the signal intensity of the infrared light emitted by the infrared emitting tube in the electronic device varies with the emission angle, by rationally utilizing the energy of the infrared emitting tube at different emission angles, the energy utilization rate of the lamp tube can be improved without increasing the lamp tube power, thereby reducing the lamp tube cost.

[0066] In one embodiment, the electronic device may be a smart interactive tablet. By providing an infrared lamp in the smart interactive tablet, energy utilization can be greatly improved and costs can be reduced.

[0067] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0068] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included within the claims of the present application.

Claims

1. An infrared lamp, characterized in that: The infrared lamp tube includes an infrared emitting tube, which includes a light-emitting chip and a lampshade covering the light-emitting chip. The lampshade includes a symmetrical cover body. The infrared emitting tube has a first emission angle, and the infrared light emitted within the first emission angle intersects with the cover body. Within the first emission angle, the signal intensity of the infrared light emitted by the infrared emitting tube is positively correlated with the emission angle. The emission angle is the angle formed by the infrared light emitted by the infrared emitting tube and the central axis of the lamp tube.

2. The infrared lamp according to claim 1, characterized in that: The first transmission angle is 0° to |N°|, and the second transmission angle is |N°| to |M°|, where |N°| ≤ |M°|; the |N°| is the preset maximum angle corresponding to the desired maximum signal strength, the maximum signal strength corresponds to one or more angles, and the |M°| is the maximum value of the effective transmission angle; The infrared emitting tube further satisfies the following requirement: within |N°| to |M°|, the signal intensity of the infrared light with a large emission angle is less than or equal to the signal intensity of the infrared light with a small emission angle.

3. The infrared lamp according to claim 2, characterized in that: Within |N°| to |M°|, the signal intensity of the infrared light is less than or equal to the signal intensity of the infrared light near the central axis of the lamp tube.

4. The infrared lamp according to claim 2, characterized in that: The invalid emission angle is |M°|~|P°|; The infrared emitting tube also meets the following requirements: within the invalid emission angle, the signal intensity of the infrared light with a large emission angle is less than or equal to the signal intensity of the infrared light with a small emission angle, the signal intensity of the infrared light with the largest emission angle is the smallest or zero, and the decreasing trend of the signal intensity within |M°|~|P°| is greater than the decreasing trend within |N°|~|M°|.

5. The infrared lamp according to claim 1, characterized in that: The positive correlation trend distribution includes: within the first emission angle, the signal intensity of the infrared light with a large emission angle is greater than the signal intensity of the infrared light with a small emission angle, and the signal intensity of the infrared light with the largest emission angle is the largest; The maximum angle among the first transmission angles is a preset angle corresponding to a point where the signal strength is expected to be maximum.

6. The infrared lamp according to any one of claims 1 to 5, characterized in that: The lampshade includes a cover body with an overall symmetrical structure, or the lampshade includes a first cover body and a second cover body connected to each other, and the infrared light emitted within the first emission angle intersects with the first cover body or the second cover body.

7. The infrared lamp according to claim 6, characterized in that: The first cover body and the second cover body are symmetrically arranged, and the signal intensity distribution of the infrared light emitted by the first cover body and the second cover body is the same.

8. The infrared lamp according to claim 6, characterized in that: The lampshade is arranged in an M-curved shape.

9. The infrared lamp according to claim 6, characterized in that: The light-emitting chip includes a first light-emitting chip and a second light-emitting chip. The first cover covers the first light-emitting chip, and the second cover covers the second light-emitting chip.

10. The infrared lamp according to claim 6, characterized in that: The cover body further includes a connecting portion, the first cover body is connected to the second cover body via the connecting portion, and the connecting portion is arranged on the light emitting chip.

11. The infrared lamp according to claim 10, characterized in that: The signal intensity of the infrared light emitted by the first cover body and the second cover body is greater than or equal to the signal intensity of the infrared light emitted by the connecting portion.

12. The infrared lamp according to claim 1, characterized in that: The first emission angle includes a first horizontal emission angle and a first vertical emission angle, and the first horizontal emission angle is greater than the first vertical emission angle; Among the infrared rays emitted by the infrared emitting tube each time on the horizontal plane, within the first emission angle of the horizontal plane, the signal intensity of the infrared rays with a large horizontal emission angle is greater than or equal to the signal intensity of the infrared rays with a small horizontal emission angle, and the signal intensity of the infrared rays with the largest horizontal emission angle is the largest; Among the infrared rays emitted by the infrared emitting tube in the vertical plane each time, within the first emission angle of the vertical plane, the signal intensity of the infrared rays with a large vertical emission angle is greater than or equal to the signal intensity of the infrared rays with a small vertical emission angle, and the signal intensity of the infrared rays with the largest vertical emission angle is the largest.

13. The infrared lamp according to claim 12, characterized in that: The infrared emitting tube is used for an infrared touch screen, and the first horizontal emitting angle is determined according to one or more factors including the frame size of the infrared touch screen, the preset light density, and the position of the infrared emitting tube on the infrared touch screen.

14. The infrared lamp according to claim 12, characterized in that: The infrared emitting tube is used for an infrared touch screen, and the first emitting angle of the vertical plane is determined according to the maximum deviation angle allowed when the infrared emitting tube is installed on the infrared touch screen.

15. An infrared touch frame, characterized in that: The infrared touch frame includes at least one X-axis infrared touch panel, and at least one first infrared emitting lamp is provided on the X-axis infrared touch panel; the first infrared emitting lamp includes a first cover with a symmetrical structure, and the first infrared emitting lamp has a first emission angle, and the infrared light emitted within the first emission angle intersects with the first cover; within the first emission angle, the signal intensity of the infrared light emitted by the first infrared emitting lamp is positively correlated with the emission angle; The emission angle is an angle formed by the infrared light emitted by the first infrared emission lamp and the central axis of the first infrared emission lamp.

16. The infrared touch frame according to claim 15, characterized in that: The infrared touch frame further includes at least one Y-axis infrared touch panel, and at least one second infrared emitting lamp is provided on the Y-axis infrared touch panel; the second infrared emitting lamp includes a second cover with a symmetrical structure, and the second infrared emitting lamp includes a third emission angle and a fourth emission angle, and the infrared light emitted within the third emission angle and the fourth emission angle intersects with the second cover; within the third emission angle, the signal intensity of the infrared light emitted by the second infrared emitting lamp is positively correlated with the emission angle; within the fourth emission angle, the signal intensity of the infrared light emitted by the second infrared emitting lamp is negatively correlated with the emission angle; The fourth emission angle is an angle interval adjacent to the third emission angle, and the emission angle within the fourth emission angle is greater than the emission angle within the third emission angle.

17. The infrared touch frame according to claim 16, characterized in that: The signal intensity of the infrared light emitted by the second infrared emitting lamp within the fourth emitting angle is less than or equal to the signal intensity of the infrared light emitted by the second infrared emitting lamp near the axis.

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