TWI782715B - Distance sensor package structure - Google Patents

Abstract

The present invention is applicable to the technical field of distance sensors, and provides a distance sensor packaging structure, including a substrate, a chip assembly, a light-transmitting assembly, and a housing covered on the substrate; The light-emitting chip and the sensing chip; the light-transmitting assembly includes a light-transmitting member and a lens module arranged at intervals; the light-transmitting member and the light-emitting chip are correspondingly arranged for the light emitted by the light-emitting chip to pass through; the lens module and the photosensitive area of the receiving end Corresponding settings are used for the light emitted by the light-emitting chip to pass through and converge to the receiving end photosensitive area of the sensing chip after being reflected by the detection object; the lens module is molded on the substrate and covers the receiving end of the sensing chip. photosensitive area. The packaging structure of the distance sensor provided by the present invention simplifies the packaging process of the distance sensor, improves production efficiency, assembly accuracy and waterproof performance, and further reduces the manufacturing cost and product defective rate of the distance sensor.

Description

Distance sensor package structure

The invention belongs to the technical field of distance sensors, in particular to a package structure of distance sensors.

The distance sensor is a distance measuring device that measures the distance of an object by means of the round-trip flight time of the light beam between the transmitting surface and the receiving surface. It is widely used in mobile phone camera autofocus, drone driving, 3D (three dimensions) modeling and other fields . In the future, the application in security fields such as 3D face recognition and face payment will become more and more mature. A distance sensor generally includes a substrate, a chip component mounted on the substrate, a light-transmitting component mounted above the chip component, and a housing. Wherein, the light-transmitting component includes a plurality of components such as a lens and a filter, and is generally fixedly connected to the casing by glue bonding. Among them, the assembly of the lens must be precise, which leads to the complexity of the entire packaging process of the distance sensor and the high manufacturing cost. At the same time, since the light-transmitting parts in the distance sensor are respectively connected to the casing by glue bonding, the waterproof performance thereof is poor, and it can only be used indoors.

The object of the present invention is to provide a distance sensor packaging structure, aiming to solve the technical problems of the prior art that the entire packaging process of the distance sensor is complicated, the manufacturing cost is high, and it is not waterproof.

The present invention is achieved in this way, a distance sensor packaging structure, including a substrate, a chip assembly, a light-transmitting assembly, and a housing mounted on the substrate; chip and sensing chip; the light-transmitting assembly includes a light-transmitting member and a lens module arranged at intervals; the light-transmitting member is arranged correspondingly to the light-emitting chip for the light emitted by the light-emitting chip to pass through, the The lens module is set corresponding to the photosensitive area of the receiving end of the sensing chip, so that the light emitted by the light emitting chip and reflected by the detection object can pass through and converging to the photosensitive area of the receiving end of the sensing chip; the lens module is molded on the substrate and covers the photosensitive area of the receiving end of the sensing chip.

In one of the embodiments, the lens module includes a light concentrating part and a support part arranged around the light concentrating part, and the support part and the light concentrating part are made of the same material and fixed integrally; the The package structure of the distance sensor further includes a filter assembly installed on the lens module, and the filter assembly is detachably connected to the supporting part.

In one of the embodiments, the filter assembly includes a bracket with a through hole and a filter embedded in the through hole, the filter is located directly above the light collecting part, and the bracket A first plug-in part is formed, and a second plug-in part is formed on the support part, and the filter assembly is plug-fitted with the lens module through the first plug-in part and the second plug-in part .

In one of the embodiments, the through hole includes a first hole body and a second hole body connected to each other, wherein the second hole body is located below the first hole body, and the second hole body The aperture is smaller than the aperture of the first hole, and the filter is embedded in the first hole; or, the second hole is located below the first hole, and the second hole The aperture of the body is larger than the aperture of the first hole, and the filter is embedded in the second hole; or, the second hole is located in the middle of the first hole, and the first hole is The aperture of the two-hole body is larger than that of the first hole body, and the optical filter is embedded in the second hole body.

In one embodiment, the bracket is a plastic frame, the filter is injection-molded in the through hole, and the size of the filter is adapted to the size of the light-collecting portion.

In one of the embodiments, the support part includes a plurality of first protrusions arranged at intervals, and the plurality of first protrusions are arranged around the light collecting part, and the plurality of first protrusions are The upper surface is flush with and higher than the top surface of the light collecting part, and the upper surface of the first protrusion engages the bracket of the filter assembly.

In one of the embodiments, the outer edge (outer edge) of the support part is formed with a plurality of second protrusions, and the upper surfaces of the plurality of second protrusions are flush and higher than the first protrusions. On the upper surface of the raised portion, a plurality of the second raised portions enclose an installation cavity for inserting the filter assembly, and the first raised portion is located in the installed cavity.

In one of the embodiments, the support part includes a closed structure, the closed structure surrounds the light-collecting part, the first insertion part is a protruding structure protruding from the lower surface of the bracket, and the The second insertion part is a groove and is located between the closing structure and the plurality of first protrusions.

In one of the embodiments, the first insertion part is a protruding structure protruding from the lower surface of the bracket, and the second insertion part is a groove and is located on a plurality of the first protrusions. and the concentrator.

In one embodiment, the casing is molded on the substrate and covers the bracket, the light-transmitting member and the lens module, and the bottom of the casing is sealed and connected to the substrate.

The technical effect of the present invention relative to the prior art is: the distance sensor packaging structure provided by the embodiment of the present invention changes the installation method of the lens module from glued on the housing to molded on the substrate, thereby effectively Reduce the glue dropping (dispensing) fixed assembly process of part or all of the light-transmitting components, making the process of the distance sensor packaging structure simple and easy to operate, improving production efficiency and assembly accuracy of the light-transmitting components, and reducing the cost of The manufacturing cost and product defect rate of the distance sensor. And because the lens module is molded, it can be in close contact with or connected to the substrate, thereby covering the corresponding chip, which greatly improves the waterproof performance of the corresponding components and the distance sensor as a whole, so that the distance sensor can be used indoors It can also be used outdoors, which effectively improves product benefits.

100: Substrate

200: chip assembly

210: Light emitting chip

220: sensing chip

300: Light-transmitting components

310: Light-transmitting parts

321: Lens module

3211: Concentrating Department

3212: closed structure

3213: The second socket

3214: the first raised part

3215: second raised part

322: Filter component

3221: The first socket

3222: Bracket

3223: filter

3224: through hole

330: sealant

400: Shell

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings that need to be used in the embodiments of the present invention or the description of conventional technologies. Obviously, The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without making progressive changes.

Fig. 1 is a schematic diagram of an exploded structure of a distance sensor package structure provided by an embodiment of the present invention; Fig. 2 is a schematic structural diagram of a lens module in Fig. 1; Fig. 3 is a schematic diagram of a distance sensor package provided by another embodiment of the present invention Figure 4 is a schematic diagram of the cross-sectional structure of the distance sensor package structure shown in Figure 3; Figure 5 is a schematic diagram of the installation structure of the light-transmitting component in Figure 4; Figure 6 is a lens module and filter in Figure 4 A schematic diagram of the connection structure of the components; FIG. 7 is a schematic structural diagram of the lens module in FIG. 3; FIG. 8 is a schematic diagram of the exploded structure of the distance sensor package structure provided by another embodiment of the present invention; FIG. 9 is a schematic diagram of the lens module in FIG. 8 Fig. 10 is a schematic structural diagram of the filter assembly in Fig. 8; Fig. 11 is a schematic diagram of an exploded structure of a distance sensor packaging structure provided by another embodiment of the present invention; Fig. 12 is a schematic diagram of the distance sensor shown in Fig. 11 13 is a schematic diagram of the installation structure of the light-transmitting component in FIG. 12; FIG. 14 is a schematic diagram of the connection structure of the lens module and the filter component in FIG. 11; FIG. 15 is the structure of the lens module in FIG. 11 Schematic diagram; FIG. 16 is a schematic cross-sectional structure diagram of an optical filter assembly used in one embodiment of the present invention; FIG. 17 is a schematic cross-sectional structural diagram of an optical filter assembly used in another embodiment of the present invention; and FIG. 18 is another implementation of the present invention Schematic diagram of the cross-sectional structure of the filter assembly used in the example.

Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or have the same or similar functional components. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", " The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those with ordinary knowledge in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

An embodiment of the present invention provides a package structure of a distance sensor. To facilitate understanding, FIG. 1 , FIG. 3 , FIG. 8 and FIG. 11 give four preferred embodiments to illustrate the package structure of the distance sensor provided by the present invention. The package structure of the distance sensor includes a substrate 100 , a chip assembly 200 , a transparent assembly 300 and a housing 400 mounted on the substrate 100 . The chip assembly 200 includes light emitting chips 210 and sensing chips 220 arranged on the substrate 100 at intervals. Specifically, the light emitting chip 210 and the sensing The chips 220 are generally arranged on the substrate 100 at intervals along the length direction of the substrate 100 . The light emitting chip 210 is generally a laser chip. The sensing chip 220 has a light-sensing area of the emitting end close to the light-emitting chip 210 and a light-sensing area of the receiving end far away from the light-emitting chip 210 .

The light-transmitting assembly 300 includes a light-transmitting member 310 and a lens module 321 arranged at intervals. The light-transmitting member 310 is disposed corresponding to the light-emitting chip 210 for the light emitted by the light-emitting chip 210 to pass through. The lens module 321 is arranged corresponding to the photosensitive area of the receiving end of the sensing chip 220 , so that the light emitted by the light emitting chip 210 and reflected by the detected object passes through and converges to the photosensitive area of the receiving end of the sensing chip 220 .

The lens module 321 is molded on the substrate 100 and covers the receiving end photosensitive area of the sensing chip 220 to enhance the waterproof performance of the receiving end photosensitive area of the sensing chip 220 . In some embodiments, when the lens module 321 is molded on the substrate 100 , it can be welded or glued together with the substrate 100 , so as to seal and cover the photosensitive region of the receiving end of the sensing chip 220 .

In the distance sensor packaging structure provided by the embodiment of the present invention, the installation method of the lens module 321 is changed from the traditional adhesive bonding on the housing 400 to molding on the substrate 100, thereby effectively reducing part or all of the light-transmitting components. 300's glue dropping (dispensing) fixed assembly process makes the manufacturing process of the distance sensor packaging structure simple and easy to operate, improves the production efficiency and the assembly accuracy of the light-transmitting component 300, and then reduces the distance sensor packaging structure. Manufacturing costs and product defect rates. And because the lens module 321 is molded, it can be closely contacted or connected with the substrate 100, thereby covering the corresponding chip therein, thereby greatly improving the waterproof performance of the corresponding components and the distance sensor as a whole, so that the distance sensor can be placed on the Indoor use can also be used outdoors, which effectively improves product efficiency. As shown in FIG. 1 to FIG. 15 , in a specific embodiment, the lens module 321 includes a light concentrating portion 3211 and a support portion disposed around the light concentrating portion 3211 . The supporting part and the light concentrating part 3211 are made of the same material and integrally formed and fixed. The package structure of the distance sensor further includes a filter assembly 322 installed on the lens module 321 , and the filter assembly 322 is detachably connected to the supporting part. Specifically, the filter assembly 322 can be placed on the support part, or can be detachably connected to the support part by one or more ways of gluing, plugging, clamping, socketing, etc., as shown in Figure 1 Show, After the filter assembly 322 is placed on the supporting part, it is sealed and connected with the lens module 321 through the sealant 330 .

This embodiment provides a new lens module structure, while changing the installation method of the filter assembly 322 . Using the distance sensor packaging structure provided in this embodiment, when assembling the distance sensor, the lens module 321 and the filter assembly 322 can be combined into an assembly, and then the assembly is installed on the housing 400, And the housing 400 is covered on the substrate 100, which further simplifies the production process of the distance sensor, improves the assembly efficiency, reduces the manufacturing cost, and is convenient for popularization.

At present, the existing distance sensors on the market generally use a filter as the filter component 322. The area of the filter at the receiving end of this structure is much larger than the required effective receiving area, except for the light reflected from the detected object. In addition, there are other stray lights projected in, which will affect the accuracy of the product. In order to improve this phenomenon, as shown in Figure 3, Figure 6, Figure 10, Figure 11 and Figure 14, in a specific embodiment, the filter assembly 322 includes a bracket 3222 with a through hole 3224 and a Filter 3223 within 3224. Wherein, the filter 3223 is located directly above the light collecting part 3211 . The filter assembly 322 adopts the structure provided by this embodiment, which can effectively reduce the area of the filter 3223 at the receiving end of the distance sensor, thereby reducing the probability of stray light entering the receiving end other than the light reflected by the detected object, so as to improve the distance sensing. The measurement accuracy of the device.

As shown in Figures 4 to 6 and Figures 12 to 14, the bracket 3222 is formed with a first insertion portion 3221, the support portion is formed with a second insertion portion 3213, and the filter assembly 322 passes through the first insertion portion 3221 and the second insertion portion 3213. The two socket parts 3213 are socketed and matched with the lens module 321 .

Specifically, the first inserting portion 3221 may be a protrusion extending outward along the length direction, width direction or thickness direction of the bracket 3222 , or a depression portion recessing inward along any one or more of the above directions. The second socket part 3213 can be a corresponding structure that is plugged and fitted with the first socket part 3221. For example, when the first socket part 3221 is a protrusion extending outward along the length direction or the width direction, the second socket part The plug-in part 3213 is opened on the corresponding orientation of the support part toward The groove or blind hole on the upper part is used for the insertion of the protrusion; when the first insertion part 3221 is a protrusion extending downward along the thickness direction, the second insertion part 3213 is opened on the top of the support part A groove or a blind hole with an upward opening for the insertion of the protrusion; when the first insertion part 3221 is a depression inwardly recessed along the length direction or the width direction, the second insertion part 3213 is formed on the support The raised structure on the corresponding side wall of the part. There are many specific implementation methods, which will not be listed one by one here. The filter assembly 322 and the lens module 321 are mated by means of the first socket part 3221 and the second socket part 3213, which is easy to operate, and the relationship between the two is not easy to change after connection, ensuring the stability of the relative position of the two after connection The stability ensures the stability of the performance of the distance sensor.

In order to ensure the stability of the package structure of the distance sensor, the above-mentioned first insertion portion 3221 can be integrally formed on the filter assembly 322 , and the second insertion portion 3213 can be integrally formed on the lens module 321 .

In order to ensure the stability of the connection relationship between the filter 3223 and the bracket 3222, please refer to FIG. 16 to FIG. 18. In a specific embodiment, the through hole 3224 includes a first hole body and a second hole body connected to each other. The above-mentioned first hole body and the second hole body mainly have three connection relationships: the first one, as shown in Figure 16, the second hole body is located below the first hole body, and the pore diameter of the second hole body is smaller than that of the first hole body The aperture, the filter 3223 is embedded in the first hole; the second type, as shown in Figure 17, the second hole is located below the first hole, and the aperture of the second hole is larger than the aperture of the first hole , the optical filter 3223 is embedded in the second hole body; the third type, as shown in Figure 18, the second hole body is located in the middle of the first hole body, and the aperture of the second hole body is larger than the aperture of the first hole body, The optical filter 3223 is embedded in the second hole.

In this way, no matter which connection relationship the first hole body and the second hole body adopt, it can ensure that there is at least one connection surface parallel to the plate surface of the optical filter 3223 in the through hole 3224. Compared with the side wall of the optical filter 3223 Connecting with the hole wall of the through hole 3224, the contact area between the two is greatly increased, thereby ensuring the stability of the connection relationship between the two.

In order to further improve the stability of the connection relationship between the optical filter 3223 and the bracket 3222, and further reduce the production process of the distance sensor package structure, in an optional embodiment, The bracket 3222 is a plastic frame, and the filter 3223 is injection-molded in the through hole 3224 . The size of the filter 3223 is adapted to the size of the light collecting part 3211 . Wherein, the bracket 3222 is made of plastic, and the manufacturing cost is low and the processing is convenient. The optical filter 3223 is injection molded in the through hole 3224, the processing method is simple, and the waterproof effect is good. The optical filter 3223 is injection-molded as an insert of the plastic bracket, and this manufacturing process can minimize the area of the optical filter 3223 while being sealed and waterproof.

The above-mentioned supporting part may adopt an integrally formed structure, or may adopt a split structure. For example, as shown in FIG. 15 , in an optional embodiment, the support portion includes a plurality of first protrusions 3214 arranged at intervals. A plurality of first raised portions 3214 are disposed around the light concentrating portion 3211, the upper surfaces of the plurality of first raised portions 3214 are flush and higher than the top surface of the light collecting portion 3211, and the upper surfaces of the first raised portions 3214 are joined to the filter. Bracket 3222 for light assembly 322 . By adopting this structure for the support part, the amount of required material can be reduced and the cost can be reduced.

As shown in FIG. 2 , FIG. 7 and FIG. 9 , in an optional embodiment, the support part includes a closed structure 3212 . The closed structure 3212 surrounds the light concentrating part 3211, the first inserting part 3221 is a protruding structure protruding from the lower surface of the bracket 3222, the second inserting part 3213 is a groove and is located between the closing structure 3212 and the plurality of first protrusions. Between the starting parts 3214. Specifically, the above-mentioned closed structure 3212 may be a ring-shaped structure protruding from the top surface of the light concentrating part 3211, or a closed structure 3212 of other shapes protruding from the top surface of the light concentrating part 3211. The shape is set, and there is no unique limitation here. The protruding structure can be a protrusion protruding from the lower surface of the bracket 3222 , a ring structure, a rectangular structure, etc., and the second insertion part 3213 is a corresponding structure that matches the first insertion part 3221 . The first plug-in part 3221 and the second plug-in part 3213 adopt the structure provided by this embodiment, and are easy to assemble and disassemble. The support part adopts the above-mentioned closed structure 3212, the processing method is simple, and the structure is stable.

As shown in FIG. 7 and FIG. 9 , in another optional embodiment, the supporting part includes both the closing structure 3212 and the first protruding part 3214 to achieve stable support of the filter assembly 322 .

As shown in Fig. 2, Fig. 7, Fig. 9 and Fig. 15, a plurality of second protrusions 3215 are formed on the outer edge (outer edge) of the supporting part, and the upper surfaces of the plurality of second protrusions 3215 are flush and high. On the upper surface of the first protruding portion 3214, a plurality of second protruding portions 3215 encircle an installation cavity for inserting the filter assembly 322, so that the filter assembly 322 can be embedded when installed on the lens module 321 In the installation cavity, the filter assembly 322 and the lens module 321 are prevented from moving relative to each other after installation. Wherein, the first protruding portion 3214 is located in the above-mentioned installation cavity. Specifically, the second protruding part 3215 is integrally connected with the supporting part, or can be separately provided, which can be specifically set according to the needs of use, and there is no unique limitation here. When the second raised portion 3215 is connected to the first raised portion 3214 of the support portion, since the first raised portion 3214 is lower than the second raised portion 3215, the connection of the two can form a stepped structure, and the stepped structure surrounds The groove can be the second insertion part 3213, or the second insertion part 3213 can be provided separately.

More specifically, the structure of the second protruding part 3215, the structure of the supporting part, and the connection between the second protruding part 3215 and the supporting part can be in various forms. As shown in Figure 2, the plurality of second protrusions 3215 and the plurality of first protrusions 3214 of the support part form a closed structure and are shaped to match the filter assembly 322, and the first protrusions of the support part The part 3214 is located inside the second protruding part 3215 and is connected with the second protruding part 3215 to form a stepped structure. The filter assembly 322 is embedded in the cavity surrounded by the second protruding part 3215 and is supported by the first part of the supporting part. The raised portion 3214 supports. As shown in FIG. 7 and FIG. 9, the plurality of second protrusions 3215 are a plurality of protrusions arranged at intervals and integrally formed on the main body of the lens module 321. A protruding part 3214, the sealing structure 3212 is located in the cavity surrounded by a plurality of first protruding parts 3214, and a plurality of second protruding parts 3215 surround a mounting cavity with a gap for one end of the filter assembly 322 into. As shown in FIG. 15 , the plurality of second protrusions 3215 are a plurality of protrusions arranged at intervals and integrally formed on the main body of the lens module 321, the support portion only includes a plurality of first protrusions 3214, and the plurality of second protrusions The number of one protrusion 3214 is greater than the number of second protrusions 3215 , and the second protrusion 3215 encloses an installation cavity with a gap for one end of the filter assembly 322 to protrude into. when However, in other embodiments, the structure of the second protruding portion 3215, the structure of the supporting portion, and the connection manner between the second protruding portion 3215 and the supporting portion may also adopt other shapes.

In a specific embodiment, the first insertion part 3221 is a protruding structure protruding from the lower surface of the bracket 3222, the second insertion part 3213 is a groove and is located between the first protrusions 3214 and the light-concentrating Between Section 3211. Specifically, the protruding structure can be a protrusion protruding from the lower surface of the bracket 3222 , a ring structure, a rectangular structure, etc., and the second insertion part 3213 is a corresponding structure that matches the first insertion part 3221 . The first plug-in part 3221 and the second plug-in part 3213 adopt the structure provided by this embodiment, and are easy to assemble and disassemble.

The casing 400 of a common distance sensor is generally connected to the substrate 100 by glue, and the waterproof effect is poor. In order to improve this phenomenon, in an optional embodiment, the housing 400 is molded on the substrate 100 and covers the support 3222 , the light-transmitting member 310 and the lens module 321 , while the bottom of the housing 400 is sealed with the substrate 100 connect. In this way, the housing 400 can not only be tightly connected with the substrate 100 after molding, but also fill the gap between the lens module 321 and the bracket 3222 to further improve the waterproof performance of the distance sensor.

After testing, if the packaging structure of the distance sensor adopts the molding process of the light-transmitting member 310 , the lens module 321 and the casing 400 respectively, its waterproof level can reach IP66. The reason why such a superior waterproof effect is produced is that the packaging structure of the distance sensor forms a double waterproof structure. The first waterproof structure is: the light-transmitting component 300 is molded, and the chip component 200 and other electronic components are wrapped in it to form the first waterproof structure; the second waterproof structure is: the housing 400 is molded and covered with the bracket 3222 , the light-transmitting member 310 and the lens module 321 are cast into a second waterproof structure. The two waterproof structures cooperate with each other to ensure the quality of the product.

The above descriptions are only preferred embodiments of the present invention, and only specifically describe the technical principle of the present invention. These descriptions are only for explaining the principle of the present invention, and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations herein, any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, and those with ordinary knowledge in the art will not Other specific implementations of the present invention can be conceived if progressive changes are required, and should be included within the protection scope of the present invention.

100: Substrate

200: chip assembly

210: Light emitting chip

220: sensing chip

300: Light-transmitting components

310: Light-transmitting parts

321: Lens module

322: Filter component

330: sealant

400: shell

Claims (10)

A distance sensor package structure, comprising a substrate, a chip component, a light-transmitting component and a housing installed on the substrate; the chip component includes a light-emitting chip and a sensing chip arranged at intervals on the substrate Chip; the light-transmitting assembly includes a light-transmitting member and a lens module arranged at intervals, the light-transmitting member is arranged correspondingly to the light-emitting chip for the light emitted by the light-emitting chip to pass through, the lens module and the sensing A receiving end photosensitive area of the chip is correspondingly arranged so that the light emitted by the light emitting chip is reflected by a detection object to pass through and converge to the receiving end photosensitive area of the sensing chip, wherein the lens module is molded On the substrate and covering the photosensitive area of the receiving end of the sensing chip, the lens module includes a light concentrating part and a support part protruding from the top surface of the light concentrating part and surrounding the light concentrating part. The supporting part and the light concentrating part are made of the same material and integrally formed and fixed. The package structure of the distance sensor according to claim 1, wherein the package structure of the distance sensor further includes a filter assembly installed on the lens module, and the filter assembly is detachably connected to the support part . The package structure of the distance sensor according to claim 2, wherein the filter assembly includes a bracket with a through hole and a filter embedded in the through hole, and the filter is located in the light collecting part directly above, the bracket forms a first insertion part, the support part forms a second insertion part, and the filter assembly is inserted into the lens module through the first insertion part and the second insertion part Cooperate. The distance sensor packaging structure according to claim 3, wherein the through hole includes a first hole and a second hole connected to each other, the second hole is located below the first hole, and The aperture of the second hole is smaller than the aperture of the first hole, and the filter is embedded in the first hole; or, the second hole is located below the first hole, and the second hole The aperture is larger than the aperture of the first aperture, and the filter is embedded in the second aperture; or, the second aperture is located in the middle of the first aperture, and the aperture of the second aperture is larger than the The aperture of the first hole body, the filter is embedded in the second hole body. The package structure of the distance sensor according to claim 3, wherein the bracket is a plastic frame, the optical filter is injection-molded in the through hole, and the size of the optical filter is adapted to the size of the light-collecting part Inch. The distance sensor packaging structure according to claim 3, wherein the supporting part includes a plurality of first protrusions arranged at intervals, the plurality of first protrusions are arranged around the light-concentrating part, and the plurality of first protrusions An upper surface of a raised portion is flush with and higher than the top surface of the light collecting portion, and the upper surface of the first raised portion engages with the bracket of the filter assembly. The package structure of the distance sensor according to claim 6, wherein a plurality of second protrusions are formed on the outer edge of the support part, and an upper surface of the plurality of second protrusions is flush with and higher than the The upper surface of the first protruding part and the plurality of second protruding parts enclose an installation cavity for embedding the filter assembly, and the first protruding part is located in the installation cavity. The package structure of the distance sensor according to claim 6, wherein the support part includes a closed structure, the closed structure surrounds the light-collecting part, and the first plug-in part is a protruding part protruding from the lower surface of the bracket. The protruding structure, the second insertion part is a groove and is located between the closing structure and the plurality of first protruding parts. The package structure of the distance sensor according to claim 6, wherein the first insertion part is a protruding structure protruding from the lower surface of the bracket, the second insertion part is a groove and is located at multiple between the first protruding portion and the light-concentrating portion. The distance sensor packaging structure according to any one of claims 3 to 9, wherein the casing is molded on the substrate and covers the bracket, the light-transmitting member and the lens module, and the casing The bottom is hermetically connected to the substrate.

Images