Optical sensor
By using an integrated lens to simplify the assembly process of photoelectric sensors, the high cost problem caused by combined lenses is solved, achieving low-cost and high-efficiency assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU UNION INTELLIGENT TECH CO LTD
- Filing Date
- 2025-08-28
- Publication Date
- 2026-06-09
AI Technical Summary
Existing photoelectric sensors use composite lenses, which leads to complex assembly and high costs.
The lens is integrated into a single unit, including the curved and stepped sections, and is directly mounted inside the housing, simplifying the assembly process and reducing costs.
It simplifies the assembly process of photoelectric sensors, reduces the manufacturing and assembly costs of lenses, and prevents dust from entering and affecting light transmission.
Smart Images
Figure CN224341689U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sensor technology, and in particular to an integrated lens and photoelectric sensor. Background Technology
[0002] A photoelectric sensor, also known as a photoelectric proximity switch, primarily utilizes the blocking or reflection of a light beam by the object being detected. A synchronous circuit then connects the circuit, thereby detecting the presence or absence of the object. Specifically, photoelectric sensors can be further classified into through-beam and reflective types, depending on their operating principle.
[0003] Taking Chinese patent CN201410519995.2 as an example, the photoelectric sensor includes a housing and a combined lens, which comprises a first super-toroidal lens, a second super-toroidal lens, a third super-toroidal lens, and a fourth super-toroidal lens. The second super-toroidal lens covers the first super-toroidal lens, and the third and fourth super-toroidal lenses are fixedly connected.
[0004] However, in the aforementioned related technologies, the lens is a composite lens, and the lens assembly is complex, which leads to a high overall assembly cost of the photoelectric sensor. Utility Model Content
[0005] The purpose of this invention is to provide a photoelectric sensor that solves the problem that in the prior art, the lens is a combination lens, the lens assembly is complicated, and thus the overall assembly cost of the photoelectric sensor is high.
[0006] The technical solution of this utility model is: a photoelectric sensor, including: a housing and an integrated lens. The housing has a mounting groove inside. The integrated lens includes a curved part, a flat part, and a protruding stepped part. The curved part is used to refract and correct the direction of light. The integrated lens is installed inside the housing through the stepped part and the mounting groove. After the integrated lens and the housing are assembled, the flat part is flush with the housing.
[0007] Preferably, the curved surface includes a first curved surface and a second curved surface, and a transmitting element and a receiving element are disposed in the housing; the first curved surface is opposite to the transmitting element and is used to correct the refraction of the light emitted by the transmitting element; the second curved surface is opposite to the receiving element and is used to correct the refraction of externally reflected light so that the light is transmitted to the receiving element.
[0008] Preferably, the surface coefficients of the first curved surface and the second curved surface are the same.
[0009] Preferably, the first curved surface and the second curved surface are mirror-symmetrical about the center of the integrated lens.
[0010] Preferably, there is a second notch between the first curved surface and the second curved surface, and a light shield is provided between the transmitting element and the receiving element. After the integrated lens and the housing are assembled, the light shield is located at the second notch.
[0011] Preferably, the integrated lens has a first notch, which is located at the center of the edge of the integrated lens.
[0012] Preferably, the housing includes a first half-shell and a second half-shell, which are closed to form the housing.
[0013] Preferably, the first half-shell and the second half-shell are provided with portions of the mounting groove at both ends, and the mounting groove is formed when the first half-shell and the second half-shell are closed.
[0014] Compared with the prior art, the advantages of this utility model are:
[0015] (1) The photoelectric sensor includes a housing and an integrated lens, and the integrated lens includes a curved surface for refraction correction of light. The combined lens for realizing the object detection function of the photoelectric sensor can be obtained without assembling the individual lenses. That is, the lens does not need to be assembled during the assembly process of the photoelectric sensor, which simplifies the assembly process of the photoelectric sensor and reduces the assembly cost of the photoelectric sensor.
[0016] (2) Structurally, the integrated lens can be directly installed in the housing through the stepped part. Compared with Chinese patent CN201410519995.2, the structure of the integrated lens is simpler than that of the combined lens, and the manufacturing cost of the lens is lower.
[0017] (3) such as Figure 2 As shown, the protruding part of the step not only serves a fixing function, but also fulfills the function of "preventing dust from entering the gap between the optical lens and the housing and affecting the passage of light" as described in Chinese Patent CN201410519995.2, without the need to introduce a new structure (dustproof strip), further reducing the assembly cost of the photoelectric sensor. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0019] Figure 1 This is a schematic diagram of the external structure of a photoelectric sensor according to the present invention;
[0020] Figure 2 This is a schematic diagram of the internal structure of a photoelectric sensor according to the present invention;
[0021] Figure 3 This is a schematic diagram of the structure of an integrated lens according to the present invention;
[0022] Figure 4 This is a schematic diagram of another integrated lens described in this utility model.
[0023] Figure 5 This is an exploded view of the structure of the photoelectric sensor described in this utility model.
[0024] Wherein: 1-housing, 2-integrated lens, 11-mounting slot, 12-emitting element, 13-receiving element, 14-light shield, 15-first half-housing, 16-second half-housing, 111-partial slot body, 21-stepped part, 22-curved part, 23-flat part, 24-first notch part, 221-first curved part, 222-second curved part. Detailed Implementation
[0025] The present invention will be further described in detail below with reference to specific embodiments:
[0026] In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.
[0027] like Figure 1 As shown, this embodiment provides a photoelectric sensor, including: a housing 1 and an integrated lens 2. As... Figure 2 As shown, the interior of the housing 1 is provided with a mounting groove 11, such as... Figure 3 and Figure 4 As shown, the integrated lens 2 includes a curved portion 22, a flat portion 23, and a protruding stepped portion 21. The curved portion is used to refract and correct the direction of light to achieve the object detection function of the photoelectric sensor; for example... Figure 2 As shown, the integrated lens 2 is mounted inside the housing 1 via the stepped portion 21 and the mounting groove 11; as Figure 1 As shown, after the integrated lens 2 and housing 1 are assembled, the flat portion 23 is flush with the housing 1. The stepped portion 21 is located between the curved portion 22 and the flat portion 21.
[0028] In the technical solution provided by this utility model, the photoelectric sensor includes a housing and an integrated lens. The integrated lens includes a curved surface for refraction correction of light. A combined lens for realizing the object detection function of the photoelectric sensor can be obtained without assembling separate lenses. That is, the assembly process of the photoelectric sensor does not require lens assembly, simplifying the assembly process and reducing the assembly cost. Furthermore, structurally, the integrated lens can be directly installed in the housing via the stepped portion. Compared with Chinese patent CN201410519995.2, the structure of the integrated lens is simpler than that of the combined lens, and the lens manufacturing cost is lower. Moreover, as... Figure 2 As shown, the protruding part of the step not only serves a fixing function, but also fulfills the function of "preventing dust from entering the gap between the optical lens and the housing and affecting the passage of light" as described in Chinese Patent CN201410519995.2, without the need to introduce a new structure (dustproof strip), further reducing the assembly cost of the photoelectric sensor.
[0029] Specifically, such as Figure 3 As shown, the curved surface 22 includes a first curved surface 221 and a second curved surface 222, as... Figure 2 As shown, the housing 1 contains a transmitting element 12 and a receiving element 13. A first curved surface 221 faces the transmitting element 12 and is used to correct the refraction of light emitted by the transmitting element 12. A second curved surface 222 faces the receiving element 13 and is used to correct the refraction of externally reflected light, ensuring that the light reaches the receiving element 13. In the technical solution provided by this invention, both the first and second curved surfaces can be understood as a single unit, eliminating the need for splicing or covering different lenses. This simplifies the assembly process of the optical sensor and effectively reduces stray light interference caused by lens splicing.
[0030] Furthermore, the surface coefficients of the first curved surface 221 and the second curved surface 222 are the same.
[0031] Furthermore, the first curved face 221 and the second curved face 222 are mirror-symmetrical about the center of the integrated lens 1.
[0032] Furthermore, such as Figure 3 As shown, there is a second notch 223 between the first curved face 221 and the second curved face 222, as... Figure 2 As shown, a light-shielding plate 14 is disposed between the transmitting element 12 and the receiving element 13. After the integrated lens 2 and the housing 1 are assembled, the light-shielding plate 14 is located at the second notch 223. The light-shielding plate 14 is made of an opaque material and is inserted between the transmitting element 12 and the receiving element 13 to block abnormal light sources and prevent optical crosstalk.
[0033] Specifically, such as Figure 3 As shown, the integrated lens 2 is provided with a first notch 24, which is located at the center of the edge of the integrated lens 2. Exemplarily, the edge is the long side, and the edge center can be understood as the first notch 24 being symmetrical about the central axis of the integrated lens 2, which is perpendicular to the long side and parallel to the plane 23. Exemplarily, in actual production, when the integrated lens 2 is obtained by injecting glue into the mold, the injection port may be uneven, so the injection port is cut off to obtain the first notch 24; moreover, during actual installation, the first notch 24 is used to indicate the installation direction of the integrated lens 2 to avoid assembly abnormalities.
[0034] Specifically, to facilitate the installation of the casing, such as Figure 5 As shown, the shell 1 includes a first half-shell 15 and a second half-shell 16, which are closed to form the shell 1.
[0035] Furthermore, to facilitate the mounting of the integrated lens within the housing, such as... Figure 5 As shown, the first half-shell 15 and the second half-shell 16 have portions of the groove body 111 of the mounting groove 11 at both ends. When the first half-shell 15 and the second half-shell 16 are closed, the mounting groove 11 is formed. Specifically, the portion of the groove body 111 in the first half-shell 15... Figure 5 Only one is shown in the image.
[0036] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.
Claims
1. A photoelectric sensor, characterized in that, The device includes a housing and an integrated lens. The housing has a mounting groove inside. The integrated lens includes a curved part, a flat part, and a protruding stepped part. The curved part is used to refract and correct the direction of light. The integrated lens is installed inside the housing through the stepped part and the mounting groove. After the integrated lens and the housing are assembled, the flat part is flush with the housing.
2. The photoelectric sensor according to claim 1, characterized in that, The curved surface includes a first curved surface and a second curved surface, and the housing is provided with a transmitting element and a receiving element; The first curved surface faces the emitting element and is used to correct the refraction of the light emitted by the emitting element; The second curved surface is opposite to the receiving element and is used to correct the refraction of externally reflected light so that the light is transmitted to the receiving element.
3. The photoelectric sensor according to claim 2, characterized in that, The surface coefficients of the first curved surface and the second curved surface are the same.
4. The photoelectric sensor according to claim 2, characterized in that, The first curved surface and the second curved surface are mirror-symmetrical about the center of the integrated lens.
5. The photoelectric sensor according to claim 2, characterized in that, There is a second notch between the first curved surface and the second curved surface, and a light shield is provided between the transmitting element and the receiving element. After the integrated lens and the housing are assembled, the light shield is located at the second notch.
6. The photoelectric sensor according to claim 1, characterized in that, The integrated lens has a first notch, which is located at the center of the edge of the integrated lens.
7. The photoelectric sensor according to claim 1, characterized in that, The housing includes a first half-shell and a second half-shell, which are closed to form the housing.
8. The photoelectric sensor according to claim 7, characterized in that, The first half-shell and the second half-shell have portions of the mounting groove at both ends, and the mounting groove is formed when the first half-shell and the second half-shell are closed.