Distance measuring device

Abstract

This utility model provides a ranging device. The ranging device includes: a base; a transmitting end transmissive mirror and a receiving end transmissive mirror, which are disposed opposite to each other on the base along a first direction, and the space between the transmitting end transmissive mirror and the receiving end transmissive mirror along the first direction is a ranging area for the object to be measured to enter; a transmitting end bent fiber optic head, one end of which is connected to the transmitting end transmissive mirror, and the other end is used to connect to a light emitter; and a receiving end bent fiber optic head, one end of which is connected to the receiving end transmissive mirror, and the other end is used to connect to a light receiver. The transmitting end bent fiber optic head and the receiving end bent fiber optic head can have uniform optical performance and geometric dimensions, eliminating the deviation in bending angle and radius of curvature caused by manual bending, ensuring the consistency of measurement points, and improving the system's repeatability accuracy.

Description

Technical Field

[0001] This utility model relates to the field of measurement technology, specifically to a distance measuring device. Background Technology

[0002] In the field of dicing machines, non-contact sensing (NCS) technology has been widely used for real-time monitoring of the gap or height between the cutting blade and the workpiece. Traditional contact sensing methods suffer from problems such as wear, limited accuracy, and low efficiency. In contrast, non-contact sensing methods, through optical sensing, can achieve high-speed, high-precision, and wear-free measurement, which is beneficial for improving cutting positioning accuracy and process stability, and meets the requirements of modern precision machining for high efficiency and high precision.

[0003] Existing ranging devices include a transmitting optical fiber and a receiving optical fiber. Light emitted by the emitter is sequentially emitted through the transmitting optical fiber and a transmitting transmission mirror. The object to be measured can be positioned between the transmitting and receiving transmission mirrors. The receiving transmission mirror receives the light emitted by the transmitting transmission mirror that is not blocked by the object to be measured, and transmits it through the receiving optical fiber to a photodetector. The distance to the object is calculated by measuring the change in the received luminous flux.

[0004] However, the transmitting and receiving optical fibers are mainly formed by manual bending by operators. Due to uncontrollable human factors, the consistency between the transmitting and receiving optical fibers is poor. This leads to the following problems: 1. Poor positioning accuracy and consistency: It is difficult to precisely control the bending angle and radius of curvature of manually bent transmitting and receiving optical fibers, resulting in significant deviations between the transmitting and receiving optical paths within the transmitting and receiving optical paths, directly affecting the positional accuracy and signal stability of the measurement point; 2. High signal loss and low transmission reliability: Manual bending of transmitting and receiving optical fibers easily generates micro-bending or macro-bending losses. Coupled with their high attenuation coefficients, this causes a significant decrease in transmitted light intensity and a reduction in the signal-to-noise ratio, affecting the accuracy and reliability of ranging; 3. Insufficient mechanical stability: Manually bent transmitting and receiving optical fibers... 4. The receiving fiber lacks reliable fixation and is prone to deformation or springback during equipment vibration or long-term use, leading to optical path deviation and requiring frequent readjustment and maintenance; 5. The lifespan is easily damaged and the durability is poor: repeated manual bending can easily cause fatigue damage, surface scratches, or even internal breakage of the transmitting and receiving fibers, which not only increases maintenance costs but also affects the long-term reliability of the system; 6. It depends on operating experience and is inefficient: bending the transmitting and receiving fibers requires a high level of technical proficiency from the operators, and the bending process and quality vary from person to person, resulting in a long installation and commissioning cycle and making it difficult to achieve rapid and standardized deployment. Utility Model Content

[0005] To at least partially address the problems existing in the prior art, embodiments of this utility model provide a ranging device. The ranging device includes: a base; a transmitting end transmissive mirror and a receiving end transmissive mirror, the transmitting end transmissive mirror and the receiving end transmissive mirror being disposed opposite to each other on the base along a first direction, the space between the transmitting end transmissive mirror and the receiving end transmissive mirror along the first direction being a ranging area for an object to be measured to enter; a transmitting end bent fiber optic head, one end of which is connected to the transmitting end transmissive mirror, and the other end being used to connect to a light emitter; and a receiving end bent fiber optic head, one end of which is connected to the receiving end transmissive mirror, and the other end being used to connect to a light receiver.

[0006] For example, the base includes a main body and a pair of positioning sleeves disposed within the main body. Each of the pair of positioning sleeves is provided with a positioning groove, and the transmitting end transmission mirror and the receiving end transmission mirror are fitted into the positioning grooves one by one.

[0007] For example, the main body is provided with first mounting grooves at both ends along the first direction, allowing a pair of positioning sleeves to pass through in a one-to-one correspondence.

[0008] For example, the main body is provided with a second mounting groove at one end along a second direction perpendicular to the first direction. The positioning grooves on each of the pair of positioning sleeves are connected to the second mounting grooves in a one-to-one correspondence. One end of the transmitting end bent fiber optic head and the receiving end bent fiber optic head along the second direction are respectively inserted into the corresponding positioning grooves, and the other end is respectively inserted into the corresponding second mounting grooves. The second mounting groove is constructed to allow the corresponding transmitting end bent fiber optic head or receiving end bent fiber optic head to pass through along the second direction.

[0009] For example, the second mounting groove extends along the second direction to the bottom surface of the body, and the bottom surface is provided with an adhesive layer.

[0010] For example, the ranging device further includes a transmitting optical fiber and a receiving optical fiber that pass through the second mounting groove in a second direction in a one-to-one correspondence. One end of the transmitting optical fiber is connected to the other end of the transmitting bent optical fiber head, and the other end of the transmitting optical fiber is used to connect to the light emitter. One end of the receiving optical fiber is connected to the other end of the receiving bent optical fiber head, and the other end of the receiving optical fiber is used to connect to the light receiver.

[0011] For example, the base has a connecting part, a transmitting end and a receiving end, the transmitting end and the receiving end are spaced apart along a first direction, one end of the transmitting end and the receiving end are respectively connected to the connecting part along a second direction perpendicular to the first direction, and the other end along the space between the first direction is used for the object to be measured to pass through to enter the ranging area, the transmitting end bend fiber head and the transmitting end transmission mirror are disposed on the transmitting end, and the receiving end bend fiber head and the receiving end transmission mirror are disposed on the receiving end.

[0012] For example, the transmitting end and the receiving end have transmitting end faces and receiving end faces facing each other along the first direction, respectively. The transmitting end transmission mirror is flush with the transmitting end face along the first direction, and the receiving end transmission mirror is flush with the receiving end face along the first direction. The end of the transmitting end face and the receiving end face facing the outside of the ranging device along the second direction is used for the object to be measured to pass through to enter the ranging area. The end of the transmitting end face and the receiving end face facing the inside of the ranging device along the second direction is respectively provided with protrusions facing each other.

[0013] For example, the ranging device further includes a waterproof adhesive layer covering the bent fiber optic head of the transmitting end; and / or the ranging device further includes a waterproof adhesive layer covering the bent fiber optic head of the receiving end.

[0014] For example, the bent fiber optic heads at the transmitting end and the bent fiber optic heads at the receiving end are positioned facing each other along a first direction.

[0015] For example, the fiber optic head at the transmitting end and / or the fiber optic head at the receiving end is a 90° bend.

[0016] The ranging device provided in this embodiment of the invention, compared to traditional manually bent optical fibers, allows for precise prefabrication of the transmitting and receiving fiber heads using relevant equipment. This results in several advantages for the ranging device: 1. High positioning accuracy and consistency: The transmitting and receiving fiber heads have uniform optical performance and geometric dimensions, eliminating the bending angle and radius of curvature deviations caused by manual bending. This makes the positioning of the transmitting and receiving optical paths within the transmitting and receiving fiber heads more precise, ensuring the consistency of measurement points and improving system repeatability; 2. Low signal loss and high transmission reliability: Because the transmitting and receiving fiber heads are precisely prefabricated, micro-bending or macro-bending losses are significantly reduced, ensuring efficient and stable transmission of light intensity. This, in turn, improves the signal-to-noise ratio and measurement accuracy. 3. High mechanical stability: The transmitter and receiver bent fiber optic heads can be manufactured in one piece, resulting in a stable structure. Therefore, they have better fatigue resistance and mechanical strength, and are not easily deformed or springbacked due to vibration or long-term use. This reduces the risk of optical path drift, reduces maintenance requirements, and allows them to adapt to vibration and interference in industrial environments, thereby extending service life and reducing system failures caused by physical damage. 4. Facilitates system integration and standardized design: The transmitter and receiver bent fiber optic heads do not require manual bending, which facilitates modular design. This improves the production and assembly efficiency of the ranging device and also facilitates optical path compatibility and expansion between different devices or platforms.

[0017] This utility model description introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0018] The advantages and features of this utility model will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the drawings,

[0020] Figure 1 A perspective view of a ranging device according to an exemplary embodiment of the present invention; and

[0021] Figure 2 for Figure 1 The image shows a cross-sectional view of the ranging device.

[0022] The above figures include the following reference numerals:

[0023] 100, Base; 110, First positioning sleeve; 111, First positioning groove; 120, Second positioning sleeve; 121, Second positioning groove; 130, Main body; 131, First mounting groove; 132, Second mounting groove; 133, Bottom surface; 140, Connecting part; 150, Transmitting end; 151, Transmitting end face; 160, Receiving end; 161, Receiving end face; 170, Protrusion; 210, Transmitting end transmission mirror; 220, Receiving end transmission mirror; 230, Ranging area; 310, Transmitting end bent fiber optic head; 320, Receiving end bent fiber optic head; 410, Transmitting end fiber optic; 420, Receiving end fiber optic. Detailed Implementation

[0024] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0025] This utility model provides a distance measuring device. The distance measuring device can be used to measure an object, such as its height. The object to be measured can be any suitable object. The distance measuring device can be applied to any suitable device, including but not limited to a dicing machine. The distance measuring device of this utility model embodiment will now be described in detail with reference to the accompanying drawings.

[0026] like Figures 1 to 2 As shown, the ranging device may include a base 100, a transmitting end transducer 210, a receiving end transducer 220, a transmitting end bent fiber optic head 310, and a receiving end bent fiber optic head 320.

[0027] The structure of the base 100 can be arbitrary, such as a bracket, tray, or support block. The base 100 can be used to fix to any suitable component such as a mounting platform.

[0028] The transmitting end transducer 210 and the receiving end transducer 220 can be mounted on the base 100 by any suitable method such as snap-fit ​​or adhesive. The transmitting end transducer 210 and the receiving end transducer 220 can be arranged opposite each other along a first direction XX. Along the first direction XX, the space between the transmitting end transducer 210 and the receiving end transducer 220 can be a ranging region 230. The ranging region 230 can be used for the object to be measured to enter. The object to be measured can enter and exit the ranging region 230 along a second direction YY or any other suitable method. The second direction YY can be perpendicular to the first direction XX.

[0029] The transmitter bend fiber optic connector 310 can be at any suitable angle, such as 45° or 60°. One end of the transmitter bend fiber optic connector 310 can be connected to the transmitter transmission mirror 210. The other end of the transmitter bend fiber optic connector 310 can be used to connect directly or indirectly to a light emitter (not shown) through other components. The light emitter can serve as a light source for emitting light. Therefore, the ranging device may also include a light emitter.

[0030] The receiver-end bendable fiber optic connector 320 can be at any suitable angle, such as 45° or 60°. One end of the receiver-end bendable fiber optic connector 320 can be connected to the receiver-end transmission mirror 220. The other end of the receiver-end bendable fiber optic connector 320 can be used to connect directly or indirectly to a light receiver (not shown) via other components. The light receiver can receive light to calculate the distance to the object being measured by the change in the received luminous flux. Therefore, the ranging device may also include a light receiver.

[0031] In practical applications, the ranging device allows the object to be measured to enter the ranging area 230. The emitter then emits light, which is transmitted through a flexed fiber optic head 310 at the transmitting end and exits through a transmitting lens 210. Part of the emitted light can be blocked by the object within the ranging area 230, while the unblocked light is received by a receiving lens 220 and then transmitted through a flexed fiber optic head 320 to the receiver. The receiver can calculate the distance to the object based on the change in luminous flux. The change in luminous flux is the difference between the luminous flux emitted by the emitter and the luminous flux actually received by the receiver, which represents the luminous flux blocked by the object.

[0032] In summary, compared to traditional manually bent optical fibers, the ranging device provided by this utility model embodiment can be precisely prefabricated using relevant equipment, with the transmitting end bent fiber head 310 and the receiving end bent fiber head 320 being the same. Thus, the ranging device achieves the following advantages: 1. High positioning accuracy and consistency: The transmitting end bent fiber head 310 and the receiving end bent fiber head 320 can have uniform optical performance and geometric dimensions, eliminating the bending angle and radius of curvature deviation caused by manual bending. This makes the positioning of the transmitting optical path within the transmitting end bent fiber head 310 and the receiving optical path within the receiving end bent fiber head 320 more accurate, ensuring the consistency of the measurement points and improving the system's repeatability; 2. Low signal loss and high transmission reliability: Because the transmitting end bent fiber head 310 and the receiving end bent fiber head 320 are precisely prefabricated, micro-bending or macro-bending losses can be significantly reduced, thereby ensuring efficient and stable transmission of light intensity, and further improving the signal-to-noise ratio and measurement accuracy. 3. High mechanical stability: The transmitter-end bent fiber optic head 310 and the receiver-end bent fiber optic head 320 can be manufactured in one piece, with a stable structure. Therefore, they have better fatigue resistance and mechanical strength, and are not easily deformed or springbacked due to vibration or long-term use. This reduces the risk of optical path drift, reduces maintenance requirements, and can adapt to vibration and interference in industrial environments, thereby extending service life and reducing system failures caused by physical damage. 4. Facilitates system integration and standardized design: The transmitter-end bent fiber optic head 310 and the receiver-end bent fiber optic head 320 do not require manual bending, which facilitates modular design. This can improve the production and assembly efficiency of the ranging device, and at the same time, it can facilitate the compatibility and expansion of optical paths between different devices or platforms.

[0033] For example, the transmitting end bent fiber optic head 310 and / or the receiving end bent fiber optic head 320 can be 90° bent fiber optic heads. A 90° bent fiber optic head allows the end of the ranging device used to measure the object to be measured to be relatively small, thus facilitating the placement of the ranging device in confined spaces. For example, a dicing machine has a compact internal structure, and the space for ranging is very limited. Therefore, the ranging device can be placed in this confined ranging space to enable the dicing machine to perform ranging functions.

[0034] For example, the transmitting end bent fiber optic connector 310 and the receiving end bent fiber optic connector 320 can be positioned directly opposite each other along the first direction XX. If the transmitting end bent fiber optic connector 310 and the receiving end bent fiber optic connector 320 are offset along the first direction XX, the receiving end bent fiber optic connector 320 can receive relatively less luminous flux of the light passing through the transmitting end bent fiber optic connector 310, resulting in a waste of optical resources. However, by positioning the transmitting end bent fiber optic connector 310 and the receiving end bent fiber optic connector 320 directly opposite each other along the first direction XX, the receiving end bent fiber optic connector 320 can receive the luminous flux of all the light passing through the transmitting end bent fiber optic connector 310, thus avoiding a waste of optical resources.

[0035] Exemplarily, the base 100 may include a main body 130 and a pair of positioning sleeves (i.e., a first positioning sleeve 110 and a second positioning sleeve 120). The main body 130 can be used to fix to any suitable component such as a mounting platform. The pair of positioning sleeves can be disposed within the main body 130. The first positioning sleeve 110 and the second positioning sleeve 120 can be disposed opposite to each other along a first direction XX. Each of the pair of positioning sleeves may be provided with a positioning groove. That is, the first positioning sleeve 110 may be provided with a first positioning groove 111, and the second positioning sleeve 120 may be provided with a second positioning groove 121. The transmitting end transmissive lens 210 and the receiving end transmissive lens 220 can be inserted into the positioning grooves in a one-to-one correspondence and fit. Specifically, the transmitting end transmissive lens 210 can be fitted into the first positioning groove 111, and the receiving end transmissive lens 220 can be fitted into the second positioning groove 121. By adjusting the position between the positioning sleeve and the main body 130, the bent fiber optic head 310 at the transmitting end and the bent fiber optic head 320 at the receiving end can be positioned to achieve higher positioning accuracy. For example, they can be positioned directly opposite each other along the first direction XX. Exemplarily, the bent fiber optic head 310 at the transmitting end and the bent fiber optic head 320 at the receiving end can be generally rectangular fiber optic heads, and the positioning groove can be a rectangular positioning groove adapted to the rectangular fiber optic head for insertion. Furthermore, the main body 130 can be made of a relatively rigid material to prevent damage to components such as the positioning sleeve, the bent fiber optic head 310 at the transmitting end, and the bent fiber optic head 320 at the receiving end from external forces. The positioning sleeve can be made of a relatively soft material to prevent damage to the bent fiber optic head 310 at the transmitting end and the bent fiber optic head 320 at the receiving end, which it directly contacts.

[0036] For example, a pair of first mounting slots 131 may be provided at both ends of the main body 130 along the first direction XX. The first mounting slots 131 may extend to the outside of the main body 130 along the first direction XX. The pair of first mounting slots 131 may allow a pair of positioning sleeves to pass through one-to-one. For example, the pair of positioning sleeves may be generally circular in shape, and the first mounting slots 131 may also be circular mounting slots that allow circular positioning sleeves to pass through. With this configuration, the first positioning sleeve 110 may pass through the first mounting slot 131 from one side of the main body 130 along the first direction XX to be installed into the main body 130. The position of the first positioning sleeve 110 may be adjusted relative to its corresponding first mounting slot 131 to adjust the position of the transmitting end bent fiber optic head 310. The second positioning sleeve 120 may pass through the first mounting slot 131 from the other side of the main body 130 along the first direction XX to be installed into the main body 130. The position of the second positioning sleeve 120 may be adjusted relative to its corresponding first mounting slot 131 to adjust the position of the receiving end bent fiber optic head 320. This configuration facilitates the installation of the base 100.

[0037] For example, the main body 130 may have two second mounting slots 132 at one end along the second direction YY. The second mounting slots 132 may extend along the second direction YY to the outside of the main body 130. The positioning slots on each of the pair of positioning sleeves may be connected one-to-one with the second mounting slots 132. One end of the transmitting end bent fiber optic head 310 and the receiving end bent fiber optic head 320 along the second direction YY may be inserted into the corresponding positioning slots, and the other end may be inserted into the corresponding second mounting slots 132. The second mounting slots 132 may be configured to allow the corresponding transmitting end bent fiber optic head 310 or receiving end bent fiber optic head 320 to pass through along the second direction YY. Specifically, the transmitting end bent fiber optic head 310 may pass through its corresponding second mounting slot 132 along the second direction YY to be inserted into the first positioning slot 111 on the first positioning sleeve 110. Thus, one end of the transmitting end bent fiber optic head 310 along the second direction YY may be inserted into the first positioning slot 111, and the other end may be inserted into the corresponding second mounting slot 132. The receiver-end bent fiber optic head 320 can pass along the second direction YY through its corresponding second mounting slot 132 to be inserted into the second positioning slot 121 on the second positioning sleeve 120. In this way, one end of the receiver-end bent fiber optic head 320 along the second direction YY can be inserted into the second positioning slot 121, and the other end can be inserted into the corresponding second mounting slot 132.

[0038] For example, the second mounting groove 132 can extend along the second direction YY to the bottom surface 133 of the main body 130. The bottom surface 133 can be provided with an adhesive layer. For example, adhesive can be applied to the bottom surface 133 to form an adhesive layer. The adhesive layer can be used to bond to a structure such as a mounting platform, so that the main body 130 can be connected to the structure such as the mounting platform. Furthermore, when there is excessive adhesive on the adhesive layer, the adhesive can enter the second positioning groove 121, thereby preventing adhesive from overflowing from the bottom surface 133, and thus avoiding human contact with the overflowing adhesive, which could cause the main body 130 to separate from the structure such as the mounting platform.

[0039] Exemplarily, the ranging device may further include a transmitting fiber 410 and a receiving fiber 420. The transmitting fiber 410 and the receiving fiber 420 may extend along a second direction YY. The transmitting fiber 410 and the receiving fiber 420 may pass through the second mounting groove 132 in a one-to-one correspondence along the second direction YY. One end of the transmitting fiber 410 may be connected to the other end of the transmitting bent fiber optic head 310. The other end of the transmitting fiber 410 may be used to connect to a light emitter. One end of the receiving fiber 420 may be connected to the other end of the receiving bent fiber optic head 320. The other end of the receiving fiber 420 may be used to connect to a light receiver. With this configuration, the light emitted by the light emitter can sequentially pass through the transmitting fiber 410 and the transmitting bent fiber optic head 310, thereby exiting from the transmitting transmission mirror 210. Part of the emitted light can be blocked by the object to be measured within the ranging area 230, while the unblocked light can be received by the receiving end transmission mirror 220. It can then be transmitted sequentially to the receiver via the receiving end bent fiber optic head 320 and the receiving fiber optic cable 420. By setting the transmitting end fiber optic cable 410 and the receiving end fiber optic cable 420, the emitter and receiver can be set up remotely, facilitating operation by relevant personnel. Furthermore, the second mounting slot 132 protects the transmitting end fiber optic cable 410 and the receiving end fiber optic cable 420 from damage by external forces.

[0040] Exemplarily, the base 100 may have a connecting portion 140, a transmitting end 150, and a receiving end 160. The connecting portion 140 can be used to fix it to any suitable component such as a mounting platform. The transmitting end 150 and the receiving end 160 may be spaced apart along a first direction XX. One end of the transmitting end 150 and the receiving end 160 along a second direction YY may be connected to the connecting portion 140. The space between the other ends of the transmitting end 150 and the receiving end 160 along the second direction YY and along the first direction XX may be used for the object to be measured to pass through and enter the ranging area 230. A bent fiber optic head 310 and a transmitting transmission mirror 210 may be provided on the transmitting end 150. A bent fiber optic head 320 and a receiving transmission mirror 220 may be provided on the receiving end 160. A first mounting groove 131 may be provided on the transmitting end 150 and the receiving end 160, respectively. A second mounting groove 132 may extend from the transmitting end 150 and the receiving end 160 to the connecting portion 140, respectively. The bottom surface 133 can be the end face of the connecting portion 140 facing away from the space through which the object to be measured passes along the second direction YY. In this way, the object to be measured can enter the ranging area 230 from the space between the transmitting end 150 and the receiving end 160 along the second direction YY for measurement. The base 100 has a relatively simple structure and is easy to manufacture.

[0041] Exemplarily, the transmitting end 150 and the receiving end 160 may each have a transmitting end face 151 and a receiving end face 161 facing each other along the first direction XX. The transmitting end transmission mirror 210 may be flush with the transmitting end face 151 along the first direction XX. The receiving end transmission mirror 220 may be flush with the receiving end face 161 along the first direction XX. The space between the transmitting end face 151 and the receiving end face 161 along the first direction XX can be used for the object to be measured to pass through to enter the ranging area 230. The ends of the transmitting end face 151 and the receiving end face 161 facing outwards from the ranging device along the second direction YY are also used for the object to be measured to pass through to enter the ranging area 230. The ends of the transmitting end face 151 and the receiving end face 161 facing inwards from the ranging device along the second direction YY may each be provided with protrusions 170 protruding towards each other. Because the thickness of the transmitting end transmission mirror 210 and the receiving end transmission mirror 220 is typically thin (approximately 1 mm), and the transmitting end bent fiber optic head 310 and the receiving end bent fiber optic head 320 need to be connected one-to-one with the transmitting end transmission mirror 210 and the receiving end transmission mirror 220, the mechanical strength of the ranging device at this location is typically low. By providing the protrusion 170, the local thickness of the base 100 can be increased, thereby improving the overall mechanical strength of the ranging device.

[0042] For example, the ranging device may also include a waterproof adhesive layer at the transmitting end. This waterproof adhesive layer can cover the transmitting end bent fiber optic head 310. Waterproof adhesive can be applied to the transmitting end bent fiber optic head 310 to form the waterproof adhesive layer. Providing a waterproof adhesive layer at the transmitting end prevents the transmitting end bent fiber optic head 310 from being damaged by water. Especially for dicing machines, which require cleaning and cooling operations, water splashing onto the transmitting end bent fiber optic head 310 is unavoidable. Therefore, by providing a waterproof adhesive layer at the transmitting end, the ranging device can be used in scenarios where dicing machines are present.

[0043] For example, the ranging device may also include a waterproof adhesive layer at the receiving end. This waterproof adhesive layer can cover the bent fiber optic connector 320 at the receiving end. Waterproof adhesive can be applied to the bent fiber optic connector 320 at the receiving end to form the waterproof adhesive layer. Providing a waterproof adhesive layer at the receiving end prevents the bent fiber optic connector 320 from being damaged by water. Especially for dicing machines, which require cleaning and cooling operations, water splashing onto the bent fiber optic connector 320 at the receiving end is unavoidable. Therefore, by providing a waterproof adhesive layer at the receiving end, the ranging device can be used in scenarios where dicing machines are present.

[0044] In the description of this utility model, it should be understood that the directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" indicate the orientation or positional relationship, which are usually based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0045] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0046] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0047] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0048] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A ranging device, characterized by, include: Base; The transmitting end transmissive mirror and the receiving end transmissive mirror are disposed opposite to each other on the base along a first direction, and the space between the transmitting end transmissive mirror and the receiving end transmissive mirror along the first direction is a ranging area for the object to be measured to enter. The transmitter has a bent fiber optic head, one end of which is connected to the transmitter's transmission mirror, and the other end is used to connect to the light emitter. as well as The receiving end has a bent fiber optic head, one end of which is connected to the receiving end transmission mirror, and the other end is used to connect to the light receiver.

2. The ranging device of claim 1, wherein, The base includes a main body and a pair of positioning sleeves disposed within the main body. Each of the pair of positioning sleeves is provided with a positioning groove, and the transmitting end transmission mirror and the receiving end transmission mirror are fitted into the positioning grooves in a corresponding manner.

3. The ranging device of claim 2, wherein, The main body is provided with first mounting grooves at both ends along the first direction, allowing the pair of positioning sleeves to pass through in a one-to-one correspondence.

4. The ranging device of claim 2, wherein, The main body is provided with a second mounting groove at one end along a second direction perpendicular to the first direction. The positioning grooves on each of the pair of positioning sleeves are connected to the second mounting grooves in a one-to-one correspondence. One end of the transmitting end bent fiber optic head and the receiving end bent fiber optic head along the second direction are respectively inserted into the corresponding positioning grooves, and the other end is respectively inserted into the corresponding second mounting grooves. The second mounting groove is constructed to allow the corresponding transmitting end bent fiber optic head or the receiving end bent fiber optic head to pass through along the second direction.

5. The ranging device of claim 4, wherein, The second mounting groove extends along the second direction to the bottom surface of the main body, and the bottom surface is provided with an adhesive layer.

6. The ranging device of claim 4, wherein, The ranging device further includes a transmitting optical fiber and a receiving optical fiber that pass through the second mounting slot in the second direction in a one-to-one correspondence. One end of the transmitting optical fiber is connected to the other end of the transmitting bent optical fiber head, and the other end of the transmitting optical fiber is used to connect to the light emitter. One end of the receiving optical fiber is connected to the other end of the receiving bent optical fiber head, and the other end of the receiving optical fiber is used to connect to the light receiver.

7. The ranging device of claim 1, wherein, The base has a connecting part, a transmitting end, and a receiving end. The transmitting end and the receiving end are spaced apart along the first direction. One end of the transmitting end and the receiving end along a second direction perpendicular to the first direction are respectively connected to the connecting part, and the space between the other ends along the first direction is used for the object to be measured to pass through to enter the ranging area. The transmitting end bent fiber head and the transmitting end transmission mirror are disposed on the transmitting end, and the receiving end bent fiber head and the receiving end transmission mirror are disposed on the receiving end.

8. The ranging device of claim 7, wherein, The transmitting end and the receiving end have transmitting and receiving surfaces facing each other along the first direction, respectively. The transmitting end transmission mirror is flush with the transmitting end surface along the first direction, and the receiving end transmission mirror is flush with the receiving end surface along the first direction. The end of the transmitting end surface and the receiving end surface facing outwards from the ranging device along the second direction is used for the object to be measured to pass through to enter the ranging area. The end of the transmitting end surface and the receiving end surface facing inwards from the ranging device along the second direction is provided with protrusions that bulge towards each other.

9. The ranging device as described in claim 1, characterized in that, The ranging device further includes a waterproof adhesive layer covering the bent fiber optic head at the transmitting end; and / or The ranging device also includes a waterproof adhesive layer covering the bent fiber optic head of the receiver.

10. The ranging device of claim 1, wherein, The bent fiber optic connector at the transmitting end and the bent fiber optic connector at the receiving end are positioned opposite each other along the first direction.

11. The ranging device of claim 1, wherein, The bending fiber optic head at the transmitting end and / or the bending fiber optic head at the receiving end are 90° bending fiber optic heads.

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