Miniature trackball detection device and method and AR glasses

Abstract

The invention discloses a miniature trackball detection device and method and AR glasses, and relates to the technical field of AR glasses interaction, and the miniature trackball detection device comprises a ball body and a detection chip; the detection chip is provided with a laser emitting end and a receiving detection end; the laser emitting end is used for emitting laser to the surface of the sphere; the receiving detection end is used for detecting a light spot formed by the laser on the surface of the sphere to obtain light spot detection data; and the receiving detection end is also used for determining the movement track of the trackball based on the light spot detection data. Due to the fact that the micro trackball detection device achieves interaction with the AR glasses through the trackball, the mechanical feedback capacity of an AR glasses interaction mode is improved, meanwhile, the mistaken touch frequency in the using process of the AR glasses is reduced, and a high-resolution two-dimensional interaction mode is provided for the AR glasses.

Description

Technical Field

[0001] The present application relates to the field of AR glasses interaction technology, and in particular to a micro trackball detection device, method and AR glasses. Background Art

[0002] With the maturity of technology and the growth of market demand, AR glasses have a very broad application prospect in the fields of entertainment, education, tourism, and medical treatment. At present, the application of AR glasses has been initially launched and is in a rapid development stage as a whole. Users can use AR glasses for entertainment activities such as games, movies, and TV, and can also explore applications in some specific industries such as medical and industrial fields.

[0003] The touch control mode of existing AR glasses is usually capacitive touch, which is intuitive and simple to operate, and has high sensitivity and accuracy. However, since AR glasses usually need to be worn on the user's head, this wearing method makes it easy for the user's face, hair, clothing, etc. to come into contact with the touch area. At the same time, when the user is in a dynamic environment such as walking or running, it is easy to cause accidental touches due to shaking or swinging of the arms. Summary of the invention

[0004] The main purpose of the present application is to provide a micro trackball detection device, method and AR glasses, aiming to solve the technical problem that the existing AR glasses interaction method is prone to accidental touches.

[0005] To achieve the above objectives, the present application proposes a micro trackball detection device, the micro trackball detection device comprising:

[0006] Spheres and detection chips;

[0007] The detection chip is provided with a laser emitting end and a receiving detection end;

[0008] The laser emitting end is used to emit laser light toward the surface of the sphere;

[0009] The receiving detection end is used to detect the light spot formed by the laser on the surface of the sphere to obtain light spot detection data;

[0010] The receiving detection end is further used to determine the motion track of the trackball based on the light spot detection data.

[0011] In one embodiment, the device further comprises: a ball cavity;

[0012] The ball cavity is used for placing the ball.

[0013] In one embodiment, the device further comprises: a lens;

[0014] The lens is placed between the laser emitting end and the sphere, and is used for refracting the laser emitted by the laser emitting end to the surface of the sphere.

[0015] In one embodiment, the lens is dustproof and waterproof.

[0016] In one embodiment, the vertical distance between the surface of the detection chip and the lowest position of the sphere is a preset distance.

[0017] In one embodiment, the center of the sphere is aligned with the center of the receiving test end.

[0018] In addition, to achieve the above-mentioned purpose, the present application also proposes a micro trackball detection method, which is applied to the micro trackball detection device as described above, and the micro trackball detection method includes:

[0019] The laser emitting end emits laser light toward the surface of the sphere;

[0020] The receiving detection end detects the light spot formed by the laser on the surface of the sphere to obtain light spot detection data;

[0021] The receiving detection end determines the motion track of the trackball based on the light spot detection data.

[0022] In addition, to achieve the above-mentioned purpose, the present application also proposes an AR glasses, on which the micro trackball detection device as described above is provided;

[0023] The micro-trackball detection device can be used to implement the steps of the micro-trackball detection method described above.

[0024] One or more technical solutions proposed in this application have at least the following technical effects:

[0025] The micro trackball detection device in the present application includes a sphere and a detection chip; the detection chip is provided with a laser emitting end and a receiving detection end; the laser emitting end is used to emit laser light to the surface of the sphere; the receiving detection end is also used to detect the light spot formed by the laser on the surface of the sphere to obtain light spot detection data; the receiving detection end is also used to determine the motion trajectory of the trackball based on the light spot detection data. Since the micro trackball detection device of the present application realizes interaction with AR glasses through a trackball, the mechanical feedback capability of the AR glasses interaction mode is improved, while the frequency of false touches during the use of AR glasses is reduced, providing AR glasses with a high-resolution two-dimensional interaction mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] Figure 1 A schematic cross-sectional view of a micro trackball detection device of the present application;

[0029] Figure 2 A schematic diagram of the transmission and receiving optical paths of a detection chip of a micro trackball detection device in an embodiment of the present application;

[0030] Figure 3 This is a flow chart of the first embodiment of the micro trackball detection method of the present application.

[0031] Figure numbers and descriptions:

[0032] Label name Label name 1 sphere 2 Ball cavity 3 lens 4 Detection chip 5 Laser emitter 6 Receiving detection end 101 Incident laser 102 Refracting laser light 103 Light spot

[0033] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0035] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0036] The current interactive mode of all-in-one AR glasses is mainly based on capacitive touch. However, this solution is prone to accidental touches, has low resolution, and lacks mechanical feedback.

[0037] The purpose of this application is to provide a micro trackball detection solution that can provide a high-resolution two-dimensional interaction method for AR glasses.

[0038] Based on this, the present application embodiment provides a micro trackball detection device, referring to Figure 1 , Figure 1 This is a cross-sectional schematic diagram of the micro trackball detection device of the present application.

[0039] like Figure 1 As shown, in the embodiment of the present application, the micro trackball detection device includes: a ball 1 and a detection chip 4.

[0040] Specifically, a laser emitting end 5 and a receiving detection end 6 may be provided on the detection chip 4 .

[0041] It should be noted that the sphere 1 is also a trackball, and the user can move the cursor or perform other operations by rotating or rolling the sphere 1 to interact with the AR glasses. Specifically, in the embodiment of the present application, the micro trackball detection device can be integrated on the AR glasses, and the user can operate the trackball with a finger to navigate and control the virtual interface or menu.

[0042] It is understandable that the laser emitting end 5 is a component in the micro trackball detection device for emitting laser light. The emitted laser light can be used as a reference for measuring the motion trajectory of the trackball, and the light spot generated by the laser beam irradiating the ball 1 is detected by the receiving detection end 6, thereby determining the motion trajectory of the ball 1.

[0043] It should be noted that when the sphere 1 is rotated by being flicked / slid by the user, the light spot on the sphere 1 caused by the irradiation of the laser beam will change accordingly due to the change in the texture of the surface of the sphere 1. The receiving detection end 6 of the detection chip 4 can judge the movement trajectory of the sphere 1 based on the changed light spot, and then map it to the UI interface of the AR glasses based on the movement trajectory of the sphere 1.

[0044] Specifically, in the embodiment of the present application, the laser emitting end 5 is used to emit laser light toward the surface of the sphere 1;

[0045] The receiving detection end 6 is used to detect the light spot formed by the laser on the surface of the sphere 1 to obtain light spot detection data;

[0046] The receiving detection end 6 is further used to determine the motion track of the trackball based on the light spot detection data.

[0047] It is understandable that the laser emitting end 5 can emit a laser beam to the surface of the sphere 1, and the laser beam will generate a light spot when irradiating the surface of the sphere 1. The receiving detection end 6 can make a judgment based on the light spot detection data corresponding to the light line, and can determine the motion trajectory generated when the sphere 1 is moved / slid by the user.

[0048] It should be noted that the micro trackball detection device of the embodiment of the present application may also be provided with a ball cavity 2 (i.e., a trackball base) for placing the ball 1. When the ball 1 is moved / slid by the user, it can roll in the ball cavity 2, thereby generating a certain motion trajectory. In the embodiment of the present application, the rolling of the ball 1 can be two-dimensional, that is, the ball 1 can roll in the X direction and the Y direction.

[0049] In one implementation of the embodiment of the present application, a lens 3 may be further provided on the micro trackball detection device, and the lens 3 may be placed between the sphere 1 and the detection chip 4. Through the lens 3, the laser emitted by the laser emitting end 5 may be refracted to the surface of the sphere 1.

[0050] In one implementation of the embodiment of the present application, the lens 3 may be a dustproof and waterproof lens 3. The dustproof and waterproof lens reduces the damage to electronic components caused by dust and liquid attached to the surface of the trackball, thereby increasing the service life of the trackball.

[0051] The micro trackball detection device in the embodiment of the present application includes a sphere 1 and a detection chip 4; the detection chip 4 is provided with a laser emitting end 5 and a receiving detection end 6; the laser emitting end 5 is used to emit laser light to the surface of the sphere 1; the receiving detection end 6 is also used to detect the light spot formed by the laser on the surface of the sphere 1 to obtain light spot detection data; the receiving detection end 6 is also used to determine the motion trajectory of the trackball based on the light spot detection data. Since the micro trackball detection device of the present application realizes interaction with AR glasses through a trackball, the mechanical feedback capability of the AR glasses interaction mode is improved, while the frequency of false touches during the use of AR glasses is reduced, providing AR glasses with a high-resolution two-dimensional interaction mode.

[0052] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 2 , Figure 2 Schematic diagram of the emission and receiving optical paths of the detection chip 4 of the micro trackball detection device in the embodiment of the present application.

[0053] like Figure 2 As shown, in the embodiment of the present application, the laser emitting end 5 emits an incident laser 101 to the sphere 1 at an emission angle of 20°, which is refracted by the lens 3 to form a refracted laser 102, and finally irradiates the surface of the sphere 1 to form a light spot 103.

[0054] It should be noted that, for the detection chip 4, if it is too far away from the sphere 1, the detection may not be able to accurately identify the texture changes of the light spot 103 on the sphere 1. Since the sphere has a certain curvature and the laser emitting end and the receiving detection end also have a certain detection angle, the distance between the sphere and the detection chip is too close, which may cause the receiving detection end to recognize that the light spot generated by the laser emitting end irradiating the sphere is incomplete, resulting in a decrease in the receiving sensitivity.

[0055] Therefore, the maximum effective distance and the minimum effective distance of the detection chip 4 can be determined, and a preset distance can be selected based on the maximum effective distance and the minimum effective distance, and the vertical distance between the surface of the detection chip 4 and the lowest position of the sphere 1 can be set to the preset distance, thereby achieving accurate identification of the changes in the light spot on the sphere 1 while avoiding additional interference to the laser caused by the rotation of the sphere 1.

[0056] In one implementation of the embodiment of the present application, the vertical distance between the surface of the detection chip 4 and the lowest position of the sphere 1 can be set to 1.9 mm. At the same time, by aligning the center of the sphere 1 with the center of the receiving detection end 6, the receiving detection end 6 can perform light spot detection within the optimal detection range, effectively reducing the value of the minimum effective distance. Under the premise of reducing the vertical distance between the surface of the detection chip 4 and the lowest position of the sphere 1, accurate detection of the light spot 103 on the surface of the sphere 1 is achieved, reducing the length of the trackball module while reducing the space occupied by the trackball module.

[0057] In one implementation of an embodiment of the present application, the receiving detection end 6 can obtain the preset stroke value / circle in both the X-axis and Y-axis directions, and map the corresponding stroke value to the UI of the AR glasses, thereby obtaining a pixel mapping of the preset stroke value*preset stroke value, thereby providing high-resolution two-dimensional interaction for the AR glasses.

[0058] It should be noted that the above-mentioned preset stroke value can be determined according to the size of the sphere 1, such as 2600+, and the embodiment of the present application is not limited to this.

[0059] In the embodiment of the present application, the laser emission angle of the laser emission end 5 is 20°; the vertical distance between the surface of the detection chip 4 and the lowest position of the sphere 1 is a preset distance; the center of the sphere 1 is aligned with the center of the receiving test end. Since the parameters between the sphere 1 and the detection chip 4 in the micro trackball detection device are set, the receiving detection end 6 of the detection chip 4 can accurately detect the light spot 103 on the surface of the sphere 1, thereby improving the accuracy of the detection.

[0060] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the micro trackball detection method of the present application. More simple transformations based on this technical concept are all within the protection scope of the present application.

[0061] This application also provides a micro trackball detection method, please refer to Figure 3 , Figure 3 This is a flow chart of the first embodiment of the micro trackball detection method of the present application.

[0062] like Figure 3 As shown, the micro trackball detection method includes:

[0063] Step S10, the laser emitting end emits laser light toward the surface of the sphere;

[0064] Step S20, the receiving detection end detects the light spot formed by the laser on the surface of the sphere to obtain light spot detection data;

[0065] Step S30: the receiving detection end determines the movement track of the trackball based on the light spot detection data.

[0066] The micro-trackball detection method provided by the present application is based on the micro-trackball detection device in the above embodiment, and can solve the technical problem that the existing AR glasses interaction method is prone to accidental touches. Compared with the prior art, the beneficial effects of the micro-trackball detection method provided by the present application are the same as the beneficial effects of the micro-trackball detection device provided by the above embodiment, and the other technical features in the micro-trackball detection method are the same as the features disclosed in the above embodiment device, which will not be repeated here.

[0067] The present application provides an AR glasses, on which the micro trackball detection device as described above is provided, and the steps of the micro trackball detection method as described above can be implemented through the micro trackball detection device. The AR glasses proposed in the embodiment of the present application can solve the technical problem that the existing AR glasses interaction method is prone to accidental touches. Compared with the prior art, the beneficial effects of the micro AR glasses provided by the present application are the same as the beneficial effects of the micro trackball detection device provided in the above embodiment, and the other technical features in the AR glasses are the same as the features disclosed in the above embodiment device, which will not be repeated here.

[0068] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A micro trackball detection device, characterized in that: The device comprises: a sphere and a detection chip; the detection chip is provided with a laser emitting end and a receiving detection end; The laser emitting end is used to emit laser light toward the surface of the sphere; The receiving detection end is used to detect the light spot formed by the laser on the surface of the sphere to obtain light spot detection data; The receiving detection end is further used to determine the motion track of the trackball based on the light spot detection data.

2. The micro trackball detection device according to claim 1, characterized in that: The device also includes: a ball cavity; The ball cavity is used for placing the ball.

3. The micro trackball detection device according to claim 1, characterized in that: The device also includes: a lens; The lens is placed between the laser emitting end and the sphere, and is used for refracting the laser emitted by the laser emitting end to the surface of the sphere.

4. The micro trackball detection device according to claim 3, characterized in that: The lens is dustproof and waterproof.

5. The micro trackball detection device according to claim 1, characterized in that: The vertical distance between the surface of the detection chip and the lowest position of the sphere is a preset distance.

6. The micro trackball detection device according to claim 1, characterized in that: The center of the sphere is aligned with the center of the receiving test end.

7. A micro trackball detection method, characterized in that: The method is applied to the micro trackball detection device according to any one of claims 1 to 6, and the method comprises: The laser emitting end emits laser light toward the surface of the sphere; The receiving detection end detects the light spot formed by the laser on the surface of the sphere to obtain light spot detection data; The receiving detection end determines the motion track of the trackball based on the light spot detection data.

8. An AR glasses, characterized in that: The AR glasses are provided with a micro trackball detection device as described in any one of claims 1 to 7; The micro trackball detection device is used to implement the steps of the micro trackball detection method according to claim 6.

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