Light sensor

Abstract

The utility model belongs to the technical field of sensor manufacturing, and particularly relates to a light sensor which comprises a shell and a reflective mirror, the reflective mirror is arranged on the outer side wall of the shell through a connector, a light hole facing the reflective mirror is formed in the shell, a light source, a CMOS sensor and an optical splitter are arranged in the shell, and light emitted by the light source can penetrate through the light hole to reach the reflective mirror. Light reflected by the reflective mirror can enter the CMOS sensor through the optical splitter; the problem that installation is troublesome due to the fact that a transmitting end and a receiving end of an existing light sensor are physically separated is solved.

Description

Technical Field

[0001] This application belongs to the field of sensor manufacturing technology, specifically a light sensor. Background Technology

[0002] Existing light sensors consist of a transmitter that emits light and a receiver that receives light. In use, the transmitter is placed on one side and the receiver on the other. A product is sensed passing between the transmitter and receiver, and the presence of the product is determined by whether the receiver receives light. This setup physically separates the transmitter and receiver, making it cumbersome to adjust the sensor every time it is replaced or installed to ensure that the light emitted by the transmitter reaches the receiver. Utility Model Content

[0003] The purpose of this application is to address the shortcomings of existing technologies by designing a light sensor that integrates the receiver and transmitter by using a reflector in conjunction with a beam splitter located inside the housing. This solves the problem of cumbersome installation caused by the physical separation of the transmitter and receiver in current light sensors.

[0004] To achieve the above objectives, the technical solution adopted in this application is:

[0005] A light sensor includes a housing and a reflector. The reflector is mounted on the outer wall of the housing via a connector. The housing has a light-transmitting hole facing the reflector. Inside the housing are a light source, a CMOS sensor, and a beam splitter. Light emitted by the light source can pass through the light-transmitting hole onto the reflector. Light reflected by the reflector can enter the CMOS sensor after passing through the beam splitter.

[0006] Preferably, the light-transmitting hole is provided at the top of the housing, the connector is a 7-shaped link, the vertical part of the 7-shaped link is fixedly connected to the outer side wall of the housing, the horizontal part of the 7-shaped link is located above the top of the housing, and the reflector is provided on the side of the horizontal part of the 7-shaped link facing the top wall of the housing.

[0007] Preferably, the beam splitter is a planar lens, which is perpendicular to one side wall inside the housing. The angle between the planar lens and the reflector is an acute angle. The light-transmitting hole and the light source are located on opposite sides of the planar lens, and the CMOS sensor and the light-transmitting hole are located on the same side of the planar lens.

[0008] Preferably, the housing contains a convex lens near the light-transmitting hole, and the light source is located at the focal point of the convex lens.

[0009] Preferably, the angle between the plane lens and the reflector is 45°.

[0010] Preferably, the vertical portion of the 7-shaped connecting rod has an axial groove, and a screw passes through the groove and is inserted into the housing to fix the 7-shaped connecting rod to the housing.

[0011] Compared with the prior art, this application has the following beneficial effects:

[0012] This application designs a light sensor by using a reflector in conjunction with a beam splitter set inside the housing. This integrates the receiver and transmitter, solving the problem of cumbersome installation caused by the physical separation of the transmitter and receiver in current light sensors. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this application;

[0014] Figure 2 This is a schematic diagram of the internal structure of the shell in this application;

[0015] Figure 3 This is a schematic diagram illustrating the principle of this application.

[0016] The components are: 1. Housing; 2. Reflector; 3. Light-transmitting hole; 4. Light source; 5. CMOS sensor; 6. L-shaped connecting rod; 7. Plane lens; 8. Convex lens; 9. Groove; 10. Screw. Detailed Implementation

[0017] like Figure 1-3 As shown, a light sensor includes a housing 1 and a reflector 2. The reflector 2 is mounted on the outer wall of the housing 1 via a connector. The housing 1 has a light-transmitting hole 3 facing the reflector 2. The housing 1 contains a light source 4, a CMOS sensor 5, and a beam splitter. The light emitted by the light source 4 can pass through the light-transmitting hole 3 onto the reflector 2. The light reflected by the reflector 2 can enter the CMOS sensor 5 after passing through the beam splitter.

[0018] In this embodiment, such as Figure 3As shown, light emitted from light source 4 passes through the beam splitter and the light-transmitting aperture 3 before reaching the outside of housing 1. It is then reflected by mirror 2 and, in the opposite direction, passes through the light-transmitting aperture 3 back into the beam splitter, where it is emitted onto the CMOS sensor 5. If the light emitted from light source 4 is blocked by an object after passing through the beam splitter and the light-transmitting aperture 3, it cannot be reflected by mirror 2, and therefore the CMOS sensor 5 will not receive the light. In this case, it can be determined that an object has been detected. Throughout the process, mirror 2 and housing 1 are connected via a connector, so there is no physical separation. Furthermore, mirror 2 is relatively small, making installation convenient.

[0019] Specifically, the top of the housing 1 is provided with the light-transmitting hole 3, the connector is a 7-shaped connecting rod 6, the vertical part of the 7-shaped connecting rod 6 is fixedly connected to the outer side wall of the housing 1, the horizontal part of the 7-shaped connecting rod 6 is located above the top of the housing 1, and the reflector 2 is provided on the side of the horizontal part of the 7-shaped connecting rod 6 facing the top wall of the housing 1. This arrangement ensures that the 7-shaped connecting rod 6 does not occupy the surface (top wall) on the housing 1 where the light-transmitting hole 3 is provided.

[0020] In a preferred embodiment, the beam splitter is a plane lens 7, which is perpendicular to one side wall of the housing 1. The angle between the plane lens 7 and the reflector 2 is acute. The light-transmitting aperture 3 and the light source 4 are located on opposite sides of the plane lens 7, and the CMOS sensor 5 and the light-transmitting aperture 3 are located on the same side of the plane lens 7. This arrangement allows the light reflected from the reflector 2 into the housing 1 to be reflected by the plane lens 7 onto the CMOS sensor 5. Specifically, the CMOS sensor 5 is located between the plane lens 7 and the reflector 2, specifically between the end of the plane lens 7 closest to the light source and the reflector 2.

[0021] As a preferred embodiment, a convex lens 8 is provided inside the housing 1 near the light-transmitting hole 3, and the light source 4 is located at the focal point of the convex lens 8. By providing the convex lens 8, the light emitted by the light source 4 is made into parallel light after passing through the convex lens 8 and exits from the light-transmitting hole 3 to the outside of the housing 1, thereby increasing the sensing area.

[0022] As a preferred embodiment, the angle between the plane lens 7 and the reflector 2 is 45°, which makes the entire device more aesthetically pleasing.

[0023] As a preferred embodiment, the vertical portion of the 7-shaped connecting rod 6 is provided with an axial slot 9, and a screw 10 passes through the slot 9 and is inserted into the housing 1 to fix the 7-shaped connecting rod 6 to the housing 1. With this configuration, the distance between the horizontal portion of the 7-shaped connecting rod 6 and the top of the housing 1 can be adjusted through the slot 9 according to the volume of the object to be sensed.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A light ray sensor, characterized by The device includes a housing (1) and a reflector (2). The reflector (2) is mounted on the outer wall of the housing (1) via a connector. The housing (1) has a light-transmitting hole (3) facing the reflector (2). The housing (1) contains a light source (4), a CMOS sensor (5), and a beam splitter. The light emitted by the light source (4) can pass through the light-transmitting hole (3) to the reflector (2). The light reflected by the reflector (2) can enter the CMOS sensor (5) after passing through the beam splitter.

2. A light ray sensor according to claim 1, characterized in that The top of the housing (1) is provided with the light-transmitting hole (3), the connector is a 7-shaped connecting rod (6), the vertical part of the 7-shaped connecting rod (6) is fixedly connected to the outer wall of the housing (1), the horizontal part of the 7-shaped connecting rod (6) is located above the top of the housing (1), and the reflector (2) is provided on the side of the horizontal part of the 7-shaped connecting rod (6) facing the top wall of the housing (1).

3. A light ray sensor according to claim 2, characterized in that The beam splitter is a plane lens (7), which is perpendicular to one side wall inside the housing (1). The angle between the plane lens (7) and the reflector (2) is an acute angle. The light-transmitting hole (3) and the light source (4) are located on opposite sides of the plane lens (7). The CMOS sensor (5) and the light-transmitting hole (3) are located on the same side of the plane lens (7).

4. The optical sensor of claim 1, wherein, The housing (1) has a convex lens (8) located near the light-transmitting hole (3), and the light source (4) is located at the focal point of the convex lens (8).

5. A light sensor according to claim 3, characterized in that, The angle between the plane lens (7) and the reflector (2) is 45°.

6. A light ray sensor according to claim 2, characterized in that The vertical part of the 7-shaped connecting rod (6) has an axial groove (9), and the screw (10) passes through the groove (9) and is inserted into the housing (1) to fix the 7-shaped connecting rod (6) to the housing (1).

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