Optical lens assembly for trackball and trackball

Abstract

The utility model relates to an optical lens assembly for a trackball and the trackball. The optical lens assembly for the trackball comprises an IC packaging assembly, a light guide assembly, a ball and a ball mounting assembly, the IC packaging assembly comprises a packaging shell, an LED light source and an optical induction processing chip. The LED light source and the optical induction processing chip are arranged in the packaging shell side by side. The light guide assembly is arranged above the LED light source and the optical induction processing chip; the ball mounting assembly is arranged on the light guide assembly; the ball is arranged in the ball mounting assembly and located beside the light guide assembly. According to the scheme, the structure is further simplified, use is flexible, higher precision and more stable performance are achieved, and rapid, accurate and multi-direction cursor control is achieved; meanwhile, the space is effectively saved, the occupied volume of the trackball is reduced, the trackball is more convenient to carry and easy to use, and smoother and more accurate operation experience is provided for a user.

Description

TECHNICAL FIELD

[0001] The utility model relates to trackball technical field especially relates to trackball optical lens subassembly and trackball for trackball. BACKGROUND

[0002] Trackball is a kind of computer pointing device, and it is similar to mouse, it is positioned by reading the direction and speed of the scrollable ball rolling. But unlike mechanical mouse, trackball is only the ball rolling on the base, and the base keeps relative desktop unmoved. User can drive the ball rolling by finger, and then drive the movement of pointer on screen, so as not to move the whole arm, can effectively reduce hand fatigue, and avoid such as wrist tunnel syndrome (commonly known as "mouse hand") this kind of occupational injury, because it also has the advantages such as accurate positioning, not easy to shake and save space, applicable to various working environments, especially in travel or small space.

[0003] Current trackball usually contains a scroll ball, two pieces of friction wheel, two rotating shafts, two pieces of light analysis wheel (also known as grating wheel), infrared emitting diode (i.e. emission tube) and photosensitive receiving tube etc. When trackball rolls, it will drive rotating shaft and light analysis wheel to rotate. Infrared emitting diode will emit light, and after the rotation and modulation of light analysis wheel, part of light will be received by photosensitive receiving tube. Photosensitive receiving tube converts the received light signal change into electric signal and sends to computer for processing, and computer analyzes the moving direction and speed of trackball according to the electric signal, and then controls the movement of cursor on screen. But in this process, when trackball is used for a long time, the components (such as friction wheel, rotating shaft and light analysis wheel) inside trackball may be worn, which can easily lead to precision decline or failure, and the existing trackball structure is complex, and occupies large volume.

[0004] Therefore, a trackball optical lens subassembly and trackball are needed, which can further simplify the structure, use flexibly, have higher precision and more stable performance, realize fast, accurate and multi-directional cursor control, effectively save space, reduce the occupied volume of trackball, be more convenient to carry and use, and provide users with smoother and more accurate operation experience. UTILITY MODEL CONTENTS

[0005] In order to overcome the problems in the related art, the present application provides a trackball optical lens subassembly and trackball, which can further simplify the structure of trackball, use flexibly, have higher precision and more stable performance, realize fast, accurate and multi-directional cursor control, effectively save space, reduce the occupied volume of trackball, be more convenient to carry and use, and provide users with smoother and more accurate operation experience.

[0006] The first aspect of the present application provides an optical lens assembly for a trackball, comprising an IC packaging assembly, a light guide assembly, a ball and a ball mounting assembly; the IC packaging assembly comprises a packaging shell, an LED light source and an optical sensing processing chip, the LED light source and the optical sensing processing chip are arranged side by side in the packaging shell; the light guide assembly is arranged above the LED light source and the optical sensing processing chip; the ball mounting assembly is arranged on the light guide assembly; the ball is arranged in the ball mounting assembly and is located beside the light guide assembly.

[0007] In the preferred technical solution of the present application, the light guide assembly comprises a first lens and a second lens; the first lens is arranged directly above the LED light source and is arranged obliquely on the curved surface of the light guide plate, for refracting the light emitted by the LED light source onto the ball; the second lens is arranged directly above the optical sensing processing chip and is parallel to the optical sensing processing chip, for refracting the light reflected by the ball onto the optical sensing processing chip.

[0008] In the preferred technical solution of the present application, the light guide assembly comprises a light guide mounting seat and a light guide plate; the light guide mounting seat is sleeved on the IC packaging assembly; the light guide plate is arranged at the top end of the light guide mounting seat; the first lens and the second lens are arranged on the light guide plate.

[0009] In the preferred technical solution of the present application, the ball mounting assembly comprises a ball mounting seat and a ball cover; the ball mounting seat is slidingly arranged on the light guide assembly and is used for placing the ball; the ball cover is arranged above the ball mounting seat and is connected with the ball mounting seat, for limiting the ball.

[0010] In the preferred technical solution of the present application, the ball mounting seat comprises a mounting sliding groove and a ball holder; the cross section of the mounting sliding groove is in the shape of a Chinese character "N", the light guide assembly is arranged in the mounting sliding groove; the ball holder is arranged at the top end of the mounting sliding groove, and the top end of the ball holder is slightly higher than the mounting sliding groove, wherein the ball holder is in the shape of a hemisphere as a whole, and a first circular through hole is arranged at the side of the bottom end of the ball holder close to the first lens, and the diameter of the first circular through hole is smaller than the diameter of the ball.

[0011] In the preferred technical solution of the present application, the ball cover comprises a connecting seat and a second circular through hole; the connecting seat is sleeved at the top end of the ball holder; the second circular through hole is arranged at the top end of the connecting seat and faces the ball holder.

[0012] In the preferable technical scheme of the present application, the connecting seat comprises a first hollow circular table, a second hollow circular table and a third hollow circular table; the first hollow circular table, the second hollow circular table and the third hollow circular table are coaxially arranged in sequence from top to bottom; the second circular through hole is arranged on the first hollow circular table; the diameter of the third hollow circular table is matched with the diameter of the top end of the ball holder, so that the third hollow circular table can be sleeved on the ball holder.

[0013] In the preferable technical scheme of the present application, the packaging shell comprises a first groove and a second groove; the first groove and the second groove are arranged side by side on the packaging shell; the LED light source is arranged in the first groove; and the optical sensing processing chip is arranged in the second groove.

[0014] In the preferable technical scheme of the present application, the IC packaging assembly is fixedly arranged on the PCB.

[0015] The second aspect of the present application provides a trackball, which comprises a shell and the optical lens assembly for trackball.

[0016] The technical scheme provided by the present application has the following beneficial effects: the optical lens assembly for trackball provided by the present application comprises an IC packaging assembly, a light guide assembly, a ball, a ball mounting assembly and a PCB; by integrally packaging the optical sensing processing chip and the LED light source in the same packaging shell, the area occupied by them on the PCB is reduced; by arranging the first lens and the second lens above the LED light source and the optical sensing processing chip respectively, and arranging a ball beside the first lens, the light emitted by the LED light source can be refracted onto the ball, and the light reflected by the ball can be refracted onto the optical sensing processing chip; this structure can quickly and accurately capture every subtle movement of the trackball and convert it into accurate movement of the cursor on the screen; without designing structures such as friction wheels, rotating shafts and light splitting wheels, the structure is further simplified, the use is more flexible, the accuracy and stability are higher, fast, accurate and multi-directional cursor control is realized, the space is effectively saved, the occupied volume of the trackball is reduced, the trackball is more convenient to carry and use, and the user is provided with a smoother and more accurate operation experience; in addition, by arranging the ball holder and the ball cover, the ball can be limited in the ball holder, by arranging the first circular through hole in the ball holder and the second circular through hole in the ball cover, the ball can be exposed outside, which is convenient for reflecting light and user use.

[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application, as claimed. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout and in which:

[0019] Figure 1 is an exploded schematic view of an optical lens assembly for a trackball according to an embodiment of the present application;

[0020] Figure 2 is a schematic view of an IC package assembly according to an embodiment of the present application;

[0021] Figure 3 is a schematic view of a light guide assembly cooperating with a ball mounting seat according to an embodiment of the present application;

[0022] Figure 4 is another schematic view of a light guide assembly cooperating with a ball mounting seat according to an embodiment of the present application;

[0023] Figure 5 is a schematic view of a light guide assembly according to an embodiment of the present application;

[0024] Figure 6 is a schematic view of a ball mounting seat according to an embodiment of the present application;

[0025] Figure 7 is a schematic view of a ball cover according to an embodiment of the present application.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1. IC package assembly; 11, package shell; 111, first recess; 112, second recess; 12, LED light source; 13, optical sensing processing chip; 2, light guide assembly; 21, first lens; 22, second lens; 23, light guide mounting seat; 24, light guide plate; 241, protrusion; 3, ball; 4, ball mounting assembly; 41, ball mounting seat; 411, mounting sliding slot; 412, ball holder; 413, first circular through hole; 42, ball cover; 421, second circular through hole; 422, first hollow circular table; 423, second hollow circular table; 424, third hollow circular table. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present application will be described in more detail with reference to the drawings. Although the preferred embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

[0029] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "and / or," as used herein, refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0030] It should be understood that, although the terms "first," "second," "third," etc. can be employed in this application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one piece of information from another piece of information. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the application. Therefore, the features defined with "first," "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0031] At present, the existing trackball may be worn out after long time use, such as friction wheel, rotating shaft and light wheel, which can easily lead to precision decline or failure, and the existing trackball has complex structure and large occupied volume.

[0032] In view of the above problems, the optical lens assembly for trackball and the trackball provided by the embodiments of the present application further simplify the structure, are flexible to use, have higher precision and more stable performance, realize fast, accurate and multi-directional cursor control, effectively save space, reduce the occupied volume of the trackball, are more convenient to carry and use, and provide users with smoother and more accurate operation experience.

[0033] The technical solutions of the embodiments of the present application will be described in detail below with reference to the drawings.

[0034] Embodiment one

[0035] Please refer to Figures 1-7The optical lens assembly of the trackball of the present application comprises an IC packaging assembly 1, a light guide assembly 2, a ball 3, a ball mounting assembly 4 and a PCB (i.e. a circuit board). The IC packaging assembly 1 is fixedly arranged on the PCB and is connected to the PCB in the form of a square flat leadless package. The light guide assembly 2 is arranged on the IC packaging assembly 1. The ball mounting assembly 4 is arranged on the light guide assembly 2. The ball 3 is arranged in the ball mounting assembly 4 and is located beside the light guide assembly 2.

[0036] Specifically, the IC packaging assembly 1 comprises a packaging shell 11, an LED light source 12 and an optical sensing processing chip 13. The LED light source 12 and the optical sensing processing chip 13 are arranged side by side in the packaging shell 11. The LED light source 12 can be a patch LED. Specifically, the packaging shell 11 comprises a first recess 111 and a second recess 112. The first recess 111 and the second recess 112 are arranged side by side on the packaging shell 11. The LED light source 12 is arranged in the first recess 111 and the light emitting direction of the LED light source 12 is upward. The optical sensing processing chip 13 is arranged in the second recess 112 and the light sensitive surface of the optical sensing processing chip 13 is upward. By integrally packaging the optical sensing processing chip 13 and the LED light source 12 in the same packaging shell 11, the area occupied by them on the PCB is reduced.

[0037] The light guide assembly 2 is arranged above the LED light source 12 and the optical sensing processing chip 13. As shown in the drawings, Figure 5As shown, the light guide assembly 2 comprises a first lens 21, a second lens 22, a light guide mounting base 23 and a light guide plate 24; the light guide mounting base 23 is sleeved on the IC package assembly 1, specifically, the light guide mounting base 23 is in the shape of a frame as a whole and is adapted to the IC package assembly 1, so that the IC package assembly 1 can be completely accommodated in the light guide mounting base 23. The light guide plate 24 is arranged at the top end of the light guide mounting base 23 and can cover the LED light source 12 and the optical sensing processing chip 13. The first lens 21 and the second lens 22 are arranged on the light guide plate 24; specifically, the light guide plate 24 comprises a convex portion 241 and a flat portion, the cross section of the convex portion 241 is in the shape of a sector, the first lens 21 is arranged directly above the LED light source 12 and is arranged obliquely on the convex portion 241 of the light guide plate 24 and is located on the curved surface of the convex portion 241, that is, the plane where the first lens 21 is located is neither parallel to the LED patch nor perpendicular to the LED patch, for refracting the light emitted by the LED light source 12 onto the ball 3; the second lens 22 is arranged on the flat portion and is located directly above the optical sensing processing chip 13 and is parallel to the optical sensing processing chip 13, for refracting the light reflected by the ball 3 onto the optical sensing processing chip 13; more specifically, the second lens 22 is in the shape of a circle as a whole.

[0038] As shown in Figure 3 and Figure 6 As shown, the ball mounting assembly 4 comprises a ball mounting base 41; the ball mounting base 41 is arranged slidingly on the light guide assembly 2 and is used for placing the ball 3; specifically, the ball mounting base 41 comprises a mounting sliding groove 411 and a ball holder 412; the cross section of the mounting sliding groove 411 is in the shape of a convex character, and the light guide assembly 2 is arranged in the mounting sliding groove 411; more specifically, the mounting sliding groove 411 comprises an upper portion and a lower portion, after the light guide assembly 2 is slid into the mounting sliding groove 411 along the groove wall of the lower portion, the side surface and the bottom surface of the light guide mounting base 23 respectively abut against the groove wall of the lower portion, the convex portion 241 is accommodated in the upper portion and is located beside the ball holder 412. The ball holder 412 is arranged at the top end of the mounting sliding groove 411, and the top end of the ball holder 412 is slightly higher than the mounting sliding groove 411; specifically, the ball holder 412 is in the shape of a hemisphere as a whole and is used for accommodating the ball 3, and the bottom end of the ball holder 412 is provided with a first circular through hole 413 near one side of the first lens 21, the diameter of the first circular through hole 413 is smaller than the diameter of the ball 3, so that a part of the surface of the ball 3 can be exposed at the first circular through hole 413; after the light is refracted by the first lens 21, the light can irradiate on the ball 3.

[0039] In order to prevent the ball 3 from escaping from the ball holder 412, the ball mounting assembly 4 further comprises a ball cover 42, which is arranged above the ball mounting seat 41 and connected with the ball mounting seat 41, for limiting the ball 3. Specifically, the ball cover 42 comprises a second circular through hole 421 and a connecting seat; the connecting seat is sleeved on the top end of the ball holder 412, and the second circular through hole 421 is arranged at the top end of the connecting seat and faces the ball holder 412, for exposing the top end of the ball 3 outward, facilitating user access. Exemplarily, the connecting seat comprises a first hollow circular table 422, a second hollow circular table 423 and a third hollow circular table 424, which are coaxially arranged in sequence from top to bottom, i.e. the cross sections of the first hollow circular table 422, the second hollow circular table 423 and the third hollow circular table 424 form a stepped shape; the second circular through hole 421 is arranged on the first hollow circular table 422, and the diameter of the second circular through hole 421 is smaller than the diameter of the ball 3; the diameter of the third hollow circular table 424 is matched with the diameter of the top end of the ball holder 412, so that the third hollow circular table 424 can be sleeved on the ball holder 412. When the ball cover 42 is fixed on the ball mounting seat 41, the ball 3 can be limited in the area surrounded by the ball holder 412 and the ball cover 42.

[0040] Working principle:

[0041] Installation steps: first, weld the IC packaging assembly 1 on the PCB board, then sleeve the light guide mounting seat 23 of the light guide assembly 2 on the IC packaging assembly 1, then align the installation sliding groove 411 of the ball mounting seat 41 with the IC packaging assembly 1, and slide from one end of the IC packaging assembly 1 to the other end until the first lens 21 is located beside the ball holder 412, then place the ball 3 in the ball holder 412, and finally cover the ball cover 42 on the ball holder 412, thereby limiting the ball 3 in the ball holder 412, completing the installation of the optical lens assembly for the trackball.

[0042] Principle: the trackball with optical lens assembly connected to the power supply, the LED light source 12 emits light, the light through the light guide plate 24 to the first lens 21, by the refraction of the first lens 21, the light can be irradiated on the surface of the ball 3, the ball 3 will reflect a part of the light to the second lens 22, the second lens 22 will be part of the light refraction to the optical sensing processing chip 13, the optical sensing processing chip 13 receives light (optical signal) after the conversion into electronic signal and sent to the computer. The computer receives these signals, will be parsed, and the mouse cursor on the screen to the corresponding position. When the user moves the ball 3, will change the direction of the light reflected from the ball 3 to the second lens 22, so that the optical sensing processing chip 13 receives different light signals, so as to capture the direction and speed of the ball 3 movement, and determine the direction and distance of the trackball movement, so as to complete the positioning of the cursor, and then realize more accurate, more efficient computer operation.

[0043] In the first embodiment, the trackball optical lens assembly provided by the application comprises an IC package assembly, a light guide assembly, a ball, a ball mounting assembly and a PCB board; by packaging the optical sensing processing chip and the LED light source in the same package shell, the area occupied on the PCB board is reduced; by arranging the first lens and the second lens above the LED light source and the optical sensing processing chip respectively, and arranging the ball beside the first lens, the light emitted by the LED light source can be refracted on the ball, and the light reflected by the ball can be refracted on the optical sensing processing chip. The design of this structure can quickly and accurately capture every subtle action of the trackball and convert it into accurate movement of the cursor on the screen. Without designing structures such as friction wheel, rotating shaft and light separation wheel, the structure is further simplified, the use is more flexible, the precision is higher and the performance is more stable, realizing fast, accurate and multi-directional cursor control. At the same time, the space is effectively saved, the occupied volume of the trackball is reduced, and it is more convenient to carry and use, providing users with smoother and more accurate operation experience. Moreover, by arranging the ball holder and the ball cover, the ball can be limited in the ball holder. By arranging a first circular through hole in the ball holder and a second circular through hole on the ball cover, the ball can be exposed outside, which is convenient for reflecting light and user use.

[0044] Embodiment two

[0045] Corresponding to the trackball optical lens assembly described above, the application also provides a corresponding scheme, please refer to Figures 1-7 , specifically:

[0046] On the basis of the structure of the above-mentioned embodiment one, the trackball provided by the embodiment of the application comprises a shell and the optical lens assembly for trackball mentioned above; the shell is provided with a contact through hole, the optical lens assembly for trackball is arranged in the shell, and the top end of the ball protrudes from the contact through hole; during operation, the user only needs to contact the ball with fingers to drag the computer page and move the cursor.

[0047] The specific structure of the optical lens assembly for trackball is described in the above-mentioned embodiment one, which will not be repeated here.

[0048] In the embodiment two, the ball protrudes from the shell by arranging the contact through hole, so that the user only needs to roll the ball with fingers to drag the computer page and move the cursor during operation, which further simplifies the structure, thereby reducing the volume of the whole trackball, is flexible to use, is applicable to the space with limited moving range, and greatly improves the universality and practicality of the trackball.

[0049] In the description of the application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the application and simplifying the description, and do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the protection scope of the application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0050] For the convenience of description, spatial relative terms such as "on", "above", "upper surface", "upper" and the like can be used to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawings is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures. Therefore, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways, and the spatial relative description used herein is interpreted accordingly.

[0051] The above merely provides the preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. An optical lens assembly for a trackball, characterized by, IC package assembly (1), light guide assembly (2), ball (3) and ball mounting assembly (4) are included; The IC package assembly (1) includes a package shell (11), an LED light source (12) and an optical sensing processing chip (13), and the LED light source (12) and the optical sensing processing chip (13) are arranged side by side in the package shell (11); The light guide assembly (2) is arranged above the LED light source (12) and the optical sensing processing chip (13); The ball mounting assembly (4) is arranged on the light guide assembly (2); The ball (3) is arranged in the ball mounting assembly (4) and is located beside the light guide assembly (2).

2. The optical lens assembly for trackball according to claim 1, wherein The light guide assembly (2) includes a first lens (21) and a second lens (22); The first lens (21) is arranged directly above the LED light source (12) and is arranged obliquely on the curved surface of the light guide plate (24) to refract the light emitted by the LED light source (12) onto the ball (3); The second lens (22) is arranged directly above the optical sensing processing chip (13) and is parallel to the optical sensing processing chip (13) to refract the light reflected by the ball (3) onto the optical sensing processing chip (13).

3. The optical lens assembly for trackball according to claim 2, wherein The light guide assembly (2) further includes a light guide mounting seat (23) and a light guide plate (24); The light guide mounting seat (23) is sleeved on the IC package assembly (1); The light guide plate (24) is arranged at the top end of the light guide mounting seat (23); The first lens (21) and the second lens (22) are arranged on the light guide plate (24).

4. The optical lens assembly for trackball according to claim 2, wherein The ball mounting assembly (4) includes a ball mounting seat (41) and a ball cover (42); The ball mounting seat (41) is slidingly arranged on the light guide assembly (2) to place the ball (3); The ball cover (42) is arranged above the ball mounting seat (41) and is connected with the ball mounting seat (41) to limit the ball (3).

5. The optical lens assembly for trackball according to claim 4, wherein The ball mounting seat (41) includes a mounting sliding groove (411) and a ball holder (412); The cross section of the mounting sliding groove (411) is in the shape of a Chinese character "N", and the light guide assembly (2) is arranged in the mounting sliding groove (411); The ball holder (412) is arranged at the top end of the mounting sliding groove (411), and the top end of the ball holder (412) is slightly higher than the mounting sliding groove (411), wherein the ball holder (412) is hemispherical in shape as a whole, and a first circular through hole (413) is arranged at the bottom end of the ball holder (412) close to one side of the first lens (21), and the diameter of the first circular through hole (413) is smaller than the diameter of the ball (3).

6. The optical lens assembly for trackball according to claim 5, characterized in that, The ball cover (42) comprises a connecting seat and a second circular through hole (421); The connecting seat is sleeved on the top end of the ball holder (412); The second circular through hole (421) is arranged at the top end of the connecting seat and faces the ball holder (412).

7. The optical lens assembly for trackball according to claim 6, characterized in that, The connecting seat comprises a first hollow circular truncated cone (422), a second hollow circular truncated cone (423) and a third hollow circular truncated cone (424); The first hollow circular truncated cone (422), the second hollow circular truncated cone (423) and the third hollow circular truncated cone (424) are coaxially arranged in sequence from top to bottom; The second circular through hole (421) is arranged on the first hollow circular truncated cone (422); The diameter of the third hollow circular truncated cone is matched with the diameter of the top end of the ball holder (412), so that the third hollow circular truncated cone can be sleeved on the ball holder (412).

8. The optical lens assembly for trackball according to claim 1, characterized in that, The packaging shell (11) comprises a first groove (111) and a second groove (112); The first groove (111) and the second groove (112) are arranged side by side on the packaging shell (11); The LED light source (12) is arranged in the first groove (111); The optical sensing processing chip (13) is arranged in the second groove (112).

9. The optical lens assembly for a trackball according to claim 1, wherein, Further comprising a PCB board; The IC packaging assembly (1) is fixedly arranged on the PCB board.

10. A trackball, comprising: Comprise a shell and the optical lens assembly for trackball according to any one of claims 1-9; The shell is provided with a contact through hole; The optical lens assembly for trackball is arranged in the shell, and the top end of the ball (3) protrudes out of the contact through hole.

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