Lens-integrated external photoelectric ic assembly

Abstract

This utility model discloses an optoelectronic IC component with an externally mounted lens, including a PCB board. A housing is fixed to the bottom wall of the PCB board, and a recessed platform is provided on the bottom wall of the housing. An emitting cavity and a receiving cavity are provided on the top wall of the housing. The bottom of the emitting cavity communicates with the recessed platform, and a light-transmitting hole is provided on the bottom wall of the receiving cavity, which communicates with the recessed platform through the light-transmitting hole. An integral lens component is fixed to the recessed platform. The integral lens component is made of a single piece of light-transmitting material and has a large lens portion located inside the emitting cavity. A small lens portion is located on the front side of the large lens portion and on the lower side of the bottom wall of the receiving cavity. An emitting chip and a photosensitive chip are provided on the bottom wall of the PCB board. The emitting chip is located at the opening of the emitting cavity, and the photosensitive chip is located at the opening of the receiving cavity. This utility model can avoid installation accuracy errors caused by the separate installation of two lenses, and it can also improve the assembly efficiency of the IC component.

Description

Technical Field

[0001] This utility model relates to an optical mouse, specifically to an externally mounted lens optoelectronic IC component. Background Technology

[0002] Mechanical mice rely on an internal rubber scroll wheel and a positioning axis to detect movement; however, this method lacks precision and has been gradually superseded by optical mice. Optical mice, on the other hand, have an IC component on their bottom. This component contains a chip that emits light and a photosensitive chip that receives the reflected light. Its working principle is as follows: the emitting chip projects light onto the desktop, and the reflected light is captured by the photosensitive chip, thus determining the cursor position.

[0003] In the optical path system from the transmitting chip to the photosensitive chip, two lenses are required to change the direction of the light. In the existing technology, these two lenses are independent of each other and need to be installed in stages, which can easily cause installation accuracy errors and affect the positioning accuracy of IC components. Furthermore, the staged installation of the two lenses results in low assembly efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a solution that avoids installation accuracy errors caused by the separate installation of two lenses, and also improves the assembly efficiency of IC components.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An externally mounted optoelectronic IC component with a lens includes a PCB board. A housing is fixed to the bottom wall of the PCB board. A recessed platform is provided on the bottom wall of the housing. An emitting cavity and a receiving cavity are provided on the top wall of the housing. The bottom of the emitting cavity is connected to the recessed platform. A light-transmitting hole is provided on the bottom wall of the receiving cavity. The receiving cavity and the recessed platform are connected through the light-transmitting hole. An integrated lens is fixed to the recessed platform. The integrated lens is made of a single piece of light-transmitting material. The integrated lens has a large lens part located inside the emitting cavity. A small lens part is located on the front side of the large lens part and on the lower side of the bottom wall of the receiving cavity. An emitting chip and a photosensitive chip are provided on the bottom wall of the PCB board. The emitting chip is located at the opening of the emitting cavity, and the photosensitive chip is located at the opening of the receiving cavity.

[0006] Specifically, the top wall of the inner cavity of the sinking platform is provided with four positioning holes, which are arranged in a rectangular array. The top wall of the lens assembly is provided with four positioning rods, which are inserted into the positioning holes.

[0007] Specifically, the edge of the integrated lens fits into the inner wall of the recessed platform, and the bottom wall of the integrated lens is flush with the edge of the bottom opening of the recessed platform.

[0008] Specifically, the cross-section of the large lens is fan-shaped, and the top convex surface of the large lens gradually slopes upward from back to front.

[0009] Specifically, the thickness between the top convex surface and the bottom convex surface of the large lens gradually increases from back to front.

[0010] Specifically, the center of the light-transmitting hole is located on the front side of the central axis of the small lens section.

[0011] Specifically, the outer shell is rectangular in shape.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: See Figure 1 The bottom edge of the outer shell 2 is mounted on the top wall of the mouse shell base plate 4, and an opening is provided in the middle of the mouse shell base plate 4. The mouse shell base plate 4 contacts the desktop 5.

[0013] When the IC component is working, the emitting chip 11 emits light. The light is refracted by the large lens 32, and then passes through the opening in the bottom plate 4 of the mouse shell to reach the desktop 5, and is then reflected to the small lens 33. The light is refracted by the small lens 33, and then passes through the light-transmitting hole 231 to reach the photosensitive chip 12, thereby realizing the positioning of the mouse movement.

[0014] The large lens portion 32 and the small lens portion 33 are integrated into a single lens assembly 3, which is made of a single piece of light-transmitting material. The lens assembly 3 has four positioning pins 311. After inserting the four positioning pins 311 into the four positioning holes 211 of the recessed platform 21, the edge of the lens assembly 3 precisely mates with the inner wall of the opening of the recessed platform 21, and the bottom wall of the lens assembly 3 is flush with the edge of the opening of the recessed platform 21, thus achieving the positioning and installation of the lens assembly 3. Through this design, the large lens portion 32 and the small lens portion 33 can be quickly positioned and installed in one go, ensuring that the large lens portion 32 and the small lens portion 33 are accurately positioned... Figure 1 The corresponding positions of the optical paths shown are designed to better utilize their respective optical performance, improve the positioning accuracy of the IC components, and avoid installation accuracy errors caused by the separate installation of the large lens section 32 and the small lens section 33, which would affect the positioning accuracy of the IC components. Furthermore, integrating the large lens section 32 and the small lens section 33 into the lens assembly 3 can significantly improve the assembly efficiency of the IC components and increase production efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a cross-sectional view of an optoelectronic IC component; Figure 2An exploded view of the optoelectronic IC component; Figure 3 This is a top side view of the outer casing; Figure 4 This is a bottom side view of the casing; Figure 5 This is a bottom side view of the lens assembly; Figure 6 This is a sectional view of the lens assembly.

[0017] In the picture: 1. PCB board; 11. Transmitter chip; 12. Photosensitive chip; 2. Housing; 21. Recessed platform; 211. Positioning socket; 22. Transmitter cavity; 23. Receiver cavity; 231. Light-transmitting hole; 3. Integrated lens assembly; 311. Positioning rod; 32. Large lens section; 33. Small lens section; 4. Mouse shell base plate; 5. Desktop. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] See Figures 1 to 6 The lens is an externally mounted optoelectronic IC component, including a PCB board 1. A housing 2 is fixed to the bottom wall of the PCB board 1, and a recessed platform 21 is provided on the bottom wall of the housing 2. The bottom edge of the housing 2 is mounted on the top wall of the mouse housing base plate 4. Figure 1 (Only a portion of the mouse housing base plate 4 is shown). The mouse housing base plate 4 has an opening in the middle. The top wall of the outer shell 2 has a transmitting cavity 22 and a receiving cavity 23. The bottom of the transmitting cavity 22 is connected to the recessed platform 21. The bottom wall of the receiving cavity 23 has a light-transmitting hole 231. The receiving cavity 23 is connected to the recessed platform 21 through the light-transmitting hole 231.

[0020] A lens assembly 3 is fixedly attached to the recessed platform 21. The lens assembly 3 is made of a single piece of light-transmitting material. The lens assembly 3 has a large lens section 32, which is located inside the emitting cavity 22. A small lens section 33 is located on the front side of the large lens section 32, which is located on the lower side of the bottom wall of the receiving cavity 23. The bottom wall of the PCB board 1 has an emitting chip 11 and a photosensitive chip 12. The emitting chip 11 is located at the top opening of the emitting cavity 22, and the photosensitive chip 12 is located at the top opening of the receiving cavity 23.

[0021] Specifically, the top wall of the inner cavity of the recessed platform 21 is provided with four positioning holes 211, which are arranged in a rectangular array. The top wall of the lens assembly 3 is provided with four positioning rods 311, which are inserted into the positioning holes 211.

[0022] Specifically, the edge of the integrated lens 3 mates with the inner wall of the recessed platform 21, and the bottom wall of the integrated lens 3 is flush with the bottom opening edge of the recessed platform 21.

[0023] Specifically, the cross-section of the large lens portion 32 is fan-shaped (see...). Figure 6 The top convex surface of the large lens section 32 gradually slopes upward from back to front.

[0024] Specifically, the thickness between the top convex surface and the bottom convex surface of the large lens portion 32 gradually increases from back to front (see...). Figure 6 ).

[0025] Specifically, the center of the light-transmitting hole 231 is located on the front side of the central axis of the small lens part 33.

[0026] Specifically, the outer shell 2 is rectangular in shape.

[0027] The working principle of this utility model is as follows: See Figure 1 The bottom edge of the outer shell 2 is mounted on the top wall of the mouse shell base plate 4, and an opening is provided in the middle of the mouse shell base plate 4. The mouse shell base plate 4 contacts the desktop 5.

[0028] When the IC component is working, the emitting chip 11 emits light. The light is refracted by the large lens 32, and then passes through the opening in the bottom plate 4 of the mouse shell to reach the desktop 5, and is then reflected to the small lens 33. The light is refracted by the small lens 33, and then passes through the light-transmitting hole 231 to reach the photosensitive chip 12, thereby realizing the positioning of the mouse movement.

[0029] The large lens portion 32 and the small lens portion 33 are integrated into a single lens assembly 3, which is made of a single piece of light-transmitting material. The lens assembly 3 has four positioning pins 311. After inserting the four positioning pins 311 into the four positioning holes 211 of the recessed platform 21, the edge of the lens assembly 3 precisely mates with the inner wall of the opening of the recessed platform 21, and the bottom wall of the lens assembly 3 is flush with the edge of the opening of the recessed platform 21, thus achieving the positioning and installation of the lens assembly 3. Through this design, the large lens portion 32 and the small lens portion 33 can be quickly positioned and installed in one go, ensuring that the large lens portion 32 and the small lens portion 33 are accurately positioned... Figure 1 The corresponding positions of the optical paths shown are designed to better utilize their respective optical performance, improve the positioning accuracy of the IC components, and avoid installation accuracy errors caused by the separate installation of the large lens section 32 and the small lens section 33, which would affect the positioning accuracy of the IC components. Furthermore, integrating the large lens section 32 and the small lens section 33 into the lens assembly 3 can significantly improve the assembly efficiency of the IC components and increase production efficiency.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A photoelectric IC assembly with a lens externally mounted, characterized in that: The device includes a PCB board, a housing fixed to the bottom wall of the PCB board, a recessed platform on the bottom wall of the housing, a transmitting cavity and a receiving cavity on the top wall of the housing, the bottom of the transmitting cavity communicating with the recessed platform, a light-transmitting hole on the bottom wall of the receiving cavity communicating with the recessed platform through the light-transmitting hole, a lens assembly fixed to the recessed platform, the lens assembly being a single piece of light-transmitting material, the lens assembly having a large lens part located inside the transmitting cavity, a small lens part located in front of the large lens part, the small lens part located on the lower side of the bottom wall of the receiving cavity, and a transmitting chip and a photosensitive chip located on the bottom wall of the PCB board, the transmitting chip being located at the opening of the transmitting cavity, and the photosensitive chip being located at the opening of the receiving cavity.

2. The optoelectronic IC assembly with the lens externally mounted according to claim 1, characterized in that: The top wall of the inner cavity of the sinking platform is provided with four positioning holes, which are arranged in a rectangular array. The top wall of the lens assembly is provided with four positioning rods, which are inserted into the positioning holes.

3. The optoelectronic IC assembly with the lens externally mounted according to claim 1, characterized in that: The edge of the integrated lens fits into the inner wall of the recessed platform, and the bottom wall of the integrated lens is flush with the edge of the bottom opening of the recessed platform.

4. The optoelectronic IC assembly with the lens externally mounted according to claim 1, characterized in that: The cross-section of the large lens section is fan-shaped, and the top convex surface of the large lens section gradually slopes upward from back to front.

5. The optoelectronic IC assembly with the lens externally mounted according to claim 1, characterized in that: The thickness between the top convex surface and the bottom convex surface of the large lens gradually increases from back to front.

6. The optoelectronic IC assembly with the lens externally mounted according to claim 1, characterized in that: The center of the light-transmitting hole is located on the front side of the central axis of the small lens section.

7. The optoelectronic IC assembly with the lens externally mounted according to claim 1, characterized in that: The outer shell is rectangular.

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