A laser ranging transceiver module and a laser ranging device

Abstract

The utility model relates to laser ranging technical field discloses a kind of laser ranging transceiver module and laser ranging device, and laser ranging transceiver module includes circuit board;Laser emission source, with the circuit board electricity is connected, and the laser emission source is configured to produce emission light;Photoelectric chip, with the circuit board electricity is connected;Receiving lens is configured to provide reflected light to the photoelectric chip;Wherein, the receiving lens is opened with embedding part, and the embedding part is the spatial structure extending along the direction of receiving reflected light of the receiving lens, and the laser emission source is set in the embedding part.It is favorable to reduce optical transceiving spacing by setting laser emission source in embedding part, and reduce measurement blind area.

Description

Technical Field

[0001] This utility model relates to the field of laser ranging technology, and in particular to a laser ranging transceiver module and a laser ranging device. Background Technology

[0002] In the field of laser ranging, the traditional optical path is as follows: the light source is shaped and then emitted horizontally, which is reflected back when it encounters the target object. The receiving end collects the reflected light beam through a receiving lens, and the distance to the target object is calculated from this.

[0003] Laser ranging transceiver modules and laser ranging devices still have many problems. For example, this method brings two problems: 1. Insufficient effective signal at close range and blind spots; 2. Oversaturation of signal at medium and close range, making accurate measurement impossible.

[0004] Therefore, there is an urgent need to provide a laser ranging transceiver module and a laser ranging device in order to solve or improve at least one of the above-mentioned problems. Utility Model Content

[0005] Therefore, it is necessary to provide a laser ranging transceiver module and a laser ranging device to address the existing problems and improve at least one of the aforementioned issues.

[0006] The first aspect of this application provides a laser ranging transceiver module, comprising:

[0007] Circuit board;

[0008] A laser emission source, electrically connected to the circuit board, is configured to generate emitted light;

[0009] The optoelectronic chip is electrically connected to the circuit board;

[0010] A receiving lens is configured to provide reflected light to the photoelectric chip;

[0011] The receiving lens has an embedded portion, which is a spatial structure extending along the direction in which the receiving lens receives reflected light, and the laser emission source is disposed in the embedded portion.

[0012] In some embodiments, the embedding portion is a notch shape formed at the edge of the receiving lens, and at least a portion of the laser emission source is embedded in the embedding portion.

[0013] In some implementations, the laser ranging transceiver module further includes:

[0014] The receiving lens is fixed to the first fixing frame;

[0015] The laser emission source is fixed to the second mounting bracket.

[0016] In some embodiments, the first fixing frame and the second fixing frame are separately provided; or, the first fixing frame and the second fixing frame are integrally formed.

[0017] In some embodiments, the first fixing bracket has a clearance portion that matches the embedding portion, and the second fixing bracket is disposed close to the clearance portion.

[0018] In some implementations, the laser ranging transceiver module further includes:

[0019] A laser shaping lens is disposed at the light-emitting end of the laser emission source, and the laser shaping lens is configured to shape the emitted light passing through it.

[0020] In some embodiments, the receiving lens includes a first optical surface facing away from the photoelectric chip and a second optical surface facing the photoelectric chip, wherein the first optical surface is aspherical and the aspherical shape is used to converge reflected light to supply the photoelectric chip.

[0021] In some embodiments, a portion of the surface of the second optical surface is formed with a columnar mirror, which is configured to provide reflected light to the photoelectric chip.

[0022] In some embodiments, a portion of the surface of the second optical surface is formed with a wedge-shaped mirror, which is configured to provide reflected light to the photoelectric chip.

[0023] A second aspect of this application provides a laser ranging device, comprising:

[0024] case;

[0025] According to any of the above embodiments, the laser ranging transceiver module is disposed in the housing.

[0026] The beneficial effects of this utility model are:

[0027] The laser emitting source of this invention's laser ranging transceiver module is electrically connected to the circuit board, and the laser emitting source is configured to generate emitted light. The photoelectric chip is electrically connected to the circuit board and can receive reflected light. The receiving lens is configured to provide reflected light to the photoelectric chip. The receiving lens has an embedded portion, which is a spatial structure extending along the direction in which the receiving lens receives reflected light. The laser emitting source is disposed in the embedded portion. By disposing the laser emitting source in the embedded portion, it is beneficial to reduce the optical transceiver distance and reduce the measurement blind zone. Attached Figure Description

[0028] 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 one embodiment of this utility model. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0029] Figure 1 A three-dimensional schematic diagram of a laser ranging transceiver module provided for embodiments of this application;

[0030] Figure 2 A schematic diagram illustrating the spatial arrangement of the laser emitting source and the receiving lens in an embodiment of this application;

[0031] Figure 3 A three-dimensional schematic diagram of a receiving lens provided for an embodiment of this application;

[0032] Figure 4 A three-dimensional schematic diagram of the first fixing frame provided for the implementation of this application;

[0033] Figure 5 A three-dimensional schematic diagram of a laser ranging device provided for an embodiment of this application;

[0034] Figure 6 A perspective view of a laser rangefinder device with the transparent plate hidden, provided for an embodiment of this application.

[0035] Figure label:

[0036] 1. Circuit board; 2. Laser emission source; 3. Optoelectronic chip; 4. Receiving lens; 41. Embedded part; 42. First optical surface; 43. Second optical surface; 431. Cylindrical mirror surface; 432. Wedge-shaped mirror surface; 5. First fixing frame; 51. Clearance part; 52. Conical lens barrel part; 53. First connecting part; 54. Second connecting part; 6. Second fixing frame; 7. Laser shaping lens; 8. Housing; 81. Opening; 9. Sub-board; 10. Transparent plate. Detailed Implementation

[0037] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In this utility model, unless otherwise explicitly specified and limited, a feature "above" or "below" the second feature may mean that the feature is in direct contact with the second feature or indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature may mean that the feature is directly above or diagonally above the second feature, or simply indicates that the feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "beneath" the second feature may mean that the feature is directly below or diagonally below the second feature, or simply indicates that the feature is at a lower horizontal level than the second feature.

[0042] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0043] refer to Figure 1-4 This application provides a laser ranging transceiver module, which includes a circuit board 1, a laser emitter 2, a photoelectric chip 3, and a receiving lens 4. The laser emitter 2 is electrically connected to the circuit board 1 and is configured to generate emitted light. The photoelectric chip 3 is electrically connected to the circuit board 1. The receiving lens 4 is configured to provide reflected light to the photoelectric chip 3. The receiving lens 4 has an embedded portion 41, which is a spatial structure extending along the direction in which the receiving lens 4 receives reflected light. The laser emitter 2 is disposed in the embedded portion 41. By disposing the laser emitter 2 in the embedded portion 41, the distance between the laser emitter 2 and the receiving lens 4 is further reduced, which helps to reduce the optical transceiver distance and thus reduces the measurement blind zone.

[0044] Specifically, refer to Figure 1-4 In some embodiments, the embedding portion 41 is a notch shape formed at the edge of the receiving lens 4, and at least part of the laser emitting source 2 is embedded in the embedding portion 41. The receiving lens 4 is crescent-shaped and surrounds the laser emitting source 2, which has a simple structure and is easy to manufacture. It reduces the distance between the laser emitting source 2 and the receiving lens 4 without affecting the focusing of the reflected light.

[0045] refer to Figure 1-4 In some embodiments, the laser ranging transceiver module further includes a first mounting bracket 5 and a second mounting bracket 6. The receiving lens 4 is fixed to the first mounting bracket 5; the laser emitting source 2 is fixed to the second mounting bracket 6. This fixes the positions of the receiving lens 4 and the laser emitting source 2. Specifically, the first mounting bracket 5 and the second mounting bracket 6 can be fixedly connected to each other, or at least one can be fixedly connected to the circuit board 1, or it can be fixedly connected to the housing 8 in the laser ranging device.

[0046] Further, refer to Figure 1-4In some embodiments, the first mounting bracket 5 includes a conical lens barrel 52 with openings at the top and bottom, respectively. The receiving lens 4 is fixed at the opening at the top of the conical lens barrel 52. The top opening is a large opening end, and the bottom opening is a small opening end. The small opening end of the conical lens barrel 52 is directly facing the photoelectric chip 3, thereby irradiating the photoelectric chip 3 with the reflected light converged by the receiving lens 4. The opaque nature of the conical lens barrel 52 can reduce interference from other light. The tapered structure design at one end of the conical lens barrel 52 is beneficial to improving space utilization efficiency.

[0047] In addition, for better fixation, refer to Figure 1-4 The first fixing frame 5 also includes a first connecting part 53 integrally formed with the conical lens barrel part 52. The first connecting part 53 is a hollow column parallel to the axis of the conical lens barrel part 52 and is distributed on the periphery of the conical lens barrel part 52. The first connecting part 53 is used to fix and connect to the circuit board 1, specifically it can be a bolt connection.

[0048] Furthermore, to make the laser ranging transceiver module more compact and robust, [reference needed]. Figure 1-4 The laser ranging transceiver module also includes a sub-board 9 perpendicular to the circuit board 1. The sub-board 9 is a secondary circuit board 1. The perpendicular design effectively utilizes the space above the circuit board 1. Compared to a single large circuit board 1, this design reduces the size of the circuit board 1, making the structure of the laser ranging transceiver module more compact. Simultaneously, the first mounting bracket 5 also includes a second connecting part 54 integrally formed with the conical lens barrel portion 52. The second connecting part 54 extends along a direction perpendicular to the axis of the conical lens barrel portion 52 and is fixedly connected to the sub-board 9, specifically through bolts. This, combined with the fixed fit of the first connecting part 53, the second connecting part 54, the circuit board 1, and the sub-board 9, creates a more robust and reliable installation.

[0049] In some implementations, reference Figure 1-4 The first fixing frame 5 and the second fixing frame 6 are set separately and can be installed and removed separately for easy replacement and maintenance.

[0050] Of course, in some implementations, reference Figure 1-4 The first fixing frame 5 and the second fixing frame 6 are integrally formed, which can reduce the number of parts and reduce the number of loading and unloading process steps.

[0051] refer to Figure 1-4 In some embodiments, the first mounting bracket 5 has a clearance portion 51 that matches the mounting portion 41, and the second mounting bracket 6 is disposed close to the clearance portion 51, thereby providing space to accommodate the laser emission source 2, which ensures that the distance between the laser emission source 2 and the receiving lens 4 can be reduced.

[0052] refer to Figure 1-4In some embodiments, the laser ranging transceiver module further includes a laser shaping lens 7. The laser shaping lens 7 is disposed at the light-emitting end of the laser emission source 2 and is configured to shape the transmitted emitted light.

[0053] In some implementations, reference Figure 1-4 The receiving lens 4 includes a first optical surface 42 facing away from the photoelectric chip 3 and a second optical surface 43 facing the photoelectric chip 3. The first optical surface 42 is aspherical, and its aspherical shape is used to converge reflected light to supply the photoelectric chip 3. In laser ranging, the aspherical lens structure of the receiving lens 4 mainly functions to focus the light, focusing the received reflected light onto the photoelectric chip 3 to improve detection accuracy and efficiency.

[0054] For further explanation, please refer to the following: Figure 1-4 The distance between the laser emitter 2 and the receiving lens 4 can be defined as the distance between the axis passing through the highest point of the aspherical surface and the axis of the laser emitter 2. Of course, other definitions are also possible.

[0055] Further, refer to Figure 1-4 In some embodiments, a columnar mirror 431 is formed on a portion of the surface of the second optical surface 43, and the columnar mirror 431 is configured to provide reflected light to the photoelectric chip 3. Specifically, the main body of the second optical surface 43 is planar, and the columnar mirror 431 protrudes from it. The columnar mirror 431 helps to homogenize local light spots, helps to suppress oversaturation of the photoelectric chip 3 during close-range testing, and improves measurement accuracy.

[0056] Further, refer to Figure 1-4 In some embodiments, a wedge-shaped mirror 432 is formed on a portion of the surface of the second optical surface 43, and the wedge-shaped mirror 432 is configured to provide reflected light to the photoelectric chip 3. Specifically, the main body of the second optical surface 43 is planar, and the wedge-shaped mirror 432 protrudes from it. The wedge-shaped mirror 432 helps to change the optical path of the reflected light reflected back from close-range measurements when converging the reflected light, thus reducing blind spots.

[0057] refer to Figure 1-6 Furthermore, this application provides a laser ranging device, which includes a housing 8 and a laser ranging transceiver module according to any of the above embodiments. The laser ranging transceiver module is disposed in the housing 8.

[0058] refer to Figure 1 as well as Figure 5-6 In some embodiments, the housing 8 may have an opening 81, on which a transparent plate 10 is provided, and the opening 81 faces the laser emitting source 2 and the receiving lens 4 of the laser ranging transceiver module.

[0059] In some embodiments, the laser rangefinder also includes a display screen and buttons, which are electrically connected to the circuit board 1. The display screen is used to display the measured distance and some settings, and is located on the side opposite to the opening 81. The button area is below the display screen and includes four buttons with the functions of confirm, scroll up, scroll down, and return.

[0060] Finally, it should be noted that the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above embodiments are merely one example of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A laser ranging transceiver module, characterized in that, include: Circuit board (1); A laser emission source (2) is electrically connected to the circuit board (1), and the laser emission source (2) is configured to generate emitted light; The optoelectronic chip (3) is electrically connected to the circuit board (1); A receiving lens (4) is configured to provide reflected light to the photoelectric chip (3); The receiving lens (4) has an embedded part (41), which is a spatial structure extending along the direction of receiving reflected light by the receiving lens (4). The laser emission source (2) is disposed in the embedded part (41).

2. The laser ranging transceiver module according to claim 1, characterized in that, The embedding part (41) is a notch shape formed at the edge of the receiving lens (4), and at least part of the laser emission source (2) is embedded in the embedding part (41).

3. The laser ranging transceiver module according to claim 1, characterized in that, Also includes: The first fixing frame (5) is used to fix the receiving lens (4) to the first fixing frame (5); The laser emission source (2) is fixed to the second fixing frame (6).

4. The laser ranging transceiver module according to claim 3, characterized in that, The first fixing frame (5) and the second fixing frame (6) are separately provided; or the first fixing frame (5) and the second fixing frame (6) are integrally formed.

5. The laser ranging transceiver module according to claim 3, characterized in that, The first fixing bracket (5) has a clearance portion (51) that matches the embedding portion (41), and the second fixing bracket (6) is disposed close to the clearance portion (51).

6. The laser ranging transceiver module according to claim 1, characterized in that, Also includes: A laser shaping lens (7) is disposed at the light-emitting end of the laser emission source (2), and the laser shaping lens (7) is configured to shape the emitted light that passes through it.

7. The laser ranging transceiver module according to claim 1, characterized in that, The receiving lens (4) includes a first optical surface (42) facing away from the photoelectric chip (3) and a second optical surface (43) facing the photoelectric chip (3). The first optical surface (42) is aspherical and is used to converge reflected light to supply the photoelectric chip (3).

8. The laser ranging transceiver module according to claim 7, characterized in that, A portion of the surface of the second optical surface (43) is formed with a columnar mirror (431), which is configured to provide reflected light to the photoelectric chip (3).

9. The laser ranging transceiver module according to claim 7 or 8, characterized in that, A portion of the surface of the second optical surface (43) is formed with a wedge-shaped mirror (432), which is configured to provide reflected light to the photoelectric chip (3).

10. A laser ranging device, characterized in that, include; Shell (8); The laser ranging transceiver module according to any one of claims 1-9 is disposed in the housing (8).

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