Optical sensor packaging structure with retaining wall cover and stepped glass optical filter

Abstract

The invention discloses an optical sensor packaging structure with a retaining wall cover and a stepped glass optical filter, which comprises a substrate, a laser, a sensor, a glass optical filter and a cover, and is characterized in that the laser and the sensor are respectively arranged on the substrate, and two light through holes are reserved on the cover at positions corresponding to the laser and the sensor; the glass optical filter is adhered to the cover through glue and covers the light through hole; a retaining wall is formed on the cover and arranged on the edge of the light through hole in a surrounding mode, so that glue is separated from the light through hole through the retaining wall. The invention relates to the technical field of optical packaging, and can solve the problem that glue is easy to overflow from a light through hole when a glass optical filter and a cover are glued in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of optical packaging, and in particular to an optical sensor packaging structure with a retaining wall cover and a stepped glass filter. Background Art

[0002] Please see attached Figure 1 and attached Figure 2 The optical sensor packaging structure of the prior art includes a substrate 1, a laser 2, a sensor 3, a glass filter 4 and a cover 5. The laser 2 and the sensor 3 are respectively mounted on the substrate 1. Two light holes 51 are reserved on the cover 5 corresponding to the positions of the laser 2 and the sensor 3. The glass filter 4 is adhered to the cover 5 by glue 6 and covers the light holes 51, so that the light beam of the laser 2 is emitted through one light hole 51 through the glass filter 4, and the sensor 3 receives the reflected light through the glass filter 4 through the other light hole 51.

[0003] The glass filter 4 and the cover 5 are planar structures. When the glass filter 4 and the cover 5 are glued together, the air between the glass filter 4 and the cover 5 can be discharged from the light-through hole 51. The glue 6 is placed beside the light-through hole 51, so that the glue can easily flow into the light-through hole 51. Since the distance between the two light-through holes 51 is very small, the amount of glue 6 is difficult to control. When the amount of glue is small, the reliability of the gluing of the glass filter 4 and the cover 5 cannot be guaranteed. When the amount of glue is large, the glue easily overflows from the light-through hole 51. Therefore, it is necessary to provide a light sensor packaging structure with a retaining wall cover and a stepped glass filter, which can solve the problem of glue easily overflowing from the light-through hole when the glass filter and the cover are glued together in the prior art. Summary of the invention

[0004] The object of the present invention is to provide a light sensor packaging structure with a retaining wall cover and a stepped glass filter, which can solve the problem in the prior art that glue easily overflows from the light through hole when the glass filter and the cover are glued together.

[0005] The present invention is achieved in that: A light sensor packaging structure with a retaining wall cover and a stepped glass filter, comprising a substrate, a laser, a sensor, a glass filter and a cover, wherein the laser and the sensor are respectively mounted on the substrate, two light holes are reserved on the cover corresponding to the positions of the laser and the sensor, the glass filter is glued to the cover and covers the light holes, so that the laser light beam is emitted through one light hole through the glass filter, and the sensor receives the reflected light through the other light hole through the glass filter; The cover is formed with a retaining wall, which is arranged around the edge of the light-through hole so that the glue is separated from the light-through hole through the retaining wall.

[0006] The retaining wall is a U-shaped structure with one end closed and the other end open. The closed end of the retaining wall is located on the side of the light hole close to the glue, and the open end of the retaining wall is located on the side of the light hole away from the glue and extends to the edge of the cover.

[0007] The retaining wall and the cover are integrally formed.

[0008] The glass filter is continuously formed with a plurality of grooves, and the cover is continuously formed with a plurality of protrusions, which are staggered with the light-through holes and can be correspondingly plugged into the plurality of grooves, so that the glass filter and the cover are matched and plugged to form a stepped plug-in structure.

[0009] There are two protrusions, which are respectively located on both sides of the light-through hole; correspondingly, there are also two grooves.

[0010] The plurality of protrusions are integrally formed with the cover.

[0011] The plurality of grooves are integrally formed with the glass filter.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with a cover with a retaining wall. The retaining wall of the U-shaped structure surrounds the light-through hole on three sides, which can block the flow of glue into the light-through hole, thereby avoiding the problem of glue overflowing in the light-through hole when the glass filter is glued to the cover. At the same time, it ensures that the air between the glass filter and the cover can be fully discharged from the light-through hole, which is more conducive to the bonding of the glass filter and the cover.

[0013] 2. The present invention is provided with a glass filter with a groove and a cover with a protrusion. The protrusion and the groove are matched and plugged into each other to form a stepped plug-in structure, which can improve the bonding force between the glass filter and the cover. At the same time, the glue can flow between the groove and the protrusion, further avoiding the occurrence of glue overflow from the light hole, and also increasing the contact area between the glue and the glass filter and the cover, thereby further improving the bonding reliability between the glass filter and the cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the optical sensor packaging structure of the prior art; Figure 2 It is a structural schematic diagram of a cover in a light sensor packaging structure of the prior art; Figure 3 It is a structural schematic diagram of the optical sensor packaging structure with a retaining wall cover and a stepped glass filter of the present invention; Figure 4 It is a structural schematic diagram of a cover in a light sensor packaging structure with a retaining wall cover and a stepped glass filter according to the present invention; Figure 5The present invention is a schematic diagram of assembling a glass filter and a cover in a light sensor packaging structure with a retaining wall cover and a stepped glass filter.

[0015] In the figure, 1 is a substrate, 2 is a laser, 3 is a sensor, 4 is a glass filter, 41 is a groove, 5 is a cover, 51 is a light hole, 52 is a retaining wall, 53 is a protrusion, and 6 is glue. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Please see attached Figure 3 A light sensor packaging structure with a retaining wall cover and a stepped glass filter includes a substrate 1, a laser 2, a sensor 3, a glass filter 4 and a cover 5. The laser 2 and the sensor 3 are respectively mounted on the substrate 1. Two light holes 51 are reserved on the cover 5 corresponding to the positions of the laser 2 and the sensor 3. The glass filter 4 is adhered to the cover 5 by glue 6 and covers the light holes 51, so that the light beam of the laser 2 is emitted through one light hole 51 through the glass filter 4, and the sensor 3 receives the reflected light through the glass filter 4 through the other light hole 51.

[0018] The above structure is a conventional optical sensor packaging structure. The present invention can improve the conventional optical sensor packaging structure and can be applied to optical sensor packaging structures of various types, with good adaptability.

[0019] Please see attached Figure 3 and attached Figure 4 In the optical sensor packaging structure of the present invention, a retaining wall 52 is formed on the cover 5 , and the retaining wall 52 is arranged around the edge of the light-through hole 51 , so that the glue 6 is separated from the light-through hole 51 by the retaining wall 52 .

[0020] By setting the retaining wall 52, when the cover 5 and the glass filter 4 are bonded with glue 6, the retaining wall 52 can block the flow of glue 6 into the light-through hole 51, thereby avoiding the occurrence of glue overflow in the light-through hole 51, and ensuring that the air between the cover 5 and the glass filter 4 is effectively discharged from the light-through hole 51, thereby ensuring the bonding reliability between the cover 5 and the glass filter 4, and eliminating the need to accurately control the amount of glue 6, thereby solving the problem of being unable to accurately control the amount of glue 6 in the prior art.

[0021] Please see attached Figure 4 Preferably, the retaining wall 52 is a U-shaped structure with one end closed and the other end open, the closed end of the retaining wall 52 is located on the side of the light-through hole 51 close to the glue 6, and the open end of the retaining wall 52 is located on the side of the light-through hole 51 away from the glue 6 and extends to the edge of the cover 5.

[0022] The specific shape and size of the retaining wall 52 can be adaptively adjusted according to the size of the light-through hole 51. For example, the retaining wall 52 includes but is not limited to a circular ring-shaped structure to ensure that the retaining wall 52 can effectively block the glue 6 from flowing into the light-through hole 51. The retaining wall 52 is preferably a U-shaped structure that can surround the light-through hole 51 on three sides to effectively block the glue 6, and the amount of material used to make the retaining wall 52 is relatively small.

[0023] The retaining wall 52 is integrally formed with the cover 5 , thereby ensuring the integrity and structural strength of the entire cover 5 .

[0024] Please see attached Figure 5 A plurality of grooves 41 are continuously formed on the glass filter 4, and a plurality of protrusions 53 are continuously formed on the cover 5. The plurality of protrusions 53 are staggered with the light-through holes 51, and the plurality of protrusions 53 can be correspondingly plugged into the plurality of grooves 41, so that the glass filter 4 and the cover 5 are matched and plugged, forming a stepped plug-in structure.

[0025] The matching arrangement of the groove 41 and the protrusion 53 can facilitate the insertion of the glass filter 4 and the cover 5, thereby improving the connection reliability between the glass filter 4 and the cover 5. At the same time, the glue can also flow into the groove 41, thereby greatly increasing the contact area between the glass filter 4, the cover 5 and the glue 6, thereby further improving the connection reliability between the glass filter 4 and the cover 5.

[0026] There are preferably two protrusions 53 , which are respectively located on both sides of the light-through hole 51 ; correspondingly, there are also two grooves 41 .

[0027] The number, position and shape of the protrusions 53 and the grooves 41 correspond one to one. Preferably, there are two protrusions 53 and two grooves 41, which can be increased or decreased according to actual needs.

[0028] The plurality of protrusions 53 are integrally formed with the cover 5 , thus ensuring the integrity and structural strength of the entire cover 5 .

[0029] The plurality of grooves 41 are integrally formed with the glass filter 4 , thereby ensuring the integrity and structural strength of the entire glass filter 4 .

[0030] Please see attached Figure 3 To Attachment Figure 5 When manufacturing the cover 5, a (U-shaped) retaining wall 52 and (two) protrusions 53 surrounding the light-through hole 51 on three sides are integrally formed on the cover 5. When manufacturing the glass filter 4, (two) grooves 41 are integrally formed on the glass filter 4.

[0031] Please see attached Figure 3 To Attachment Figure 5When packaging the optical sensor, glue 6 is applied to the cover 5, and the glue 6 is separated from the light-through hole 51 by the retaining wall 52. The glass filter 4 is plugged into the cover 5 through the (two) grooves 41 and the (two) protrusions 53. The glue 6 flows between the glass filter 4 and the cover 5, and flows into between the grooves 41 and the protrusions 53. The air between the glass filter 4 and the cover 5 is fully discharged through the light-through hole 51, so that the glass filter 4 and the cover 5 are reliably bonded.

[0032] The packaging process of the substrate 1, the laser 2, the sensor 3, the glass filter 4 and the cover 5 is the same as the conventional optical sensor packaging process, which will not be described in detail here.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A light sensor packaging structure with a retaining wall cover and a stepped glass filter, comprising a substrate (1), a laser (2), a sensor (3), a glass filter (4) and a cover (5), wherein the laser (2) and the sensor (3) are respectively mounted on the substrate (1), two light holes (51) are reserved on the cover (5) at positions corresponding to the laser (2) and the sensor (3), the glass filter (4) is adhered to the cover (5) by glue (6) and covers the light holes (51), so that a light beam of the laser (2) is emitted through one light hole (51) through the glass filter (4), and the sensor (3) receives reflected light through the other light hole (51) through the glass filter (4); Its characteristics are: A retaining wall (52) is formed on the cover (5), and the retaining wall (52) is arranged around the edge of the light-through hole (51), so that the glue (6) is separated from the light-through hole (51) by the retaining wall (52).

2. The optical sensor packaging structure with a retaining wall cover and a stepped glass filter according to claim 1 is characterized in that: The retaining wall (52) is in a U-shaped structure with one end closed and the other end open; the closed end of the retaining wall (52) is located on a side of the light-through hole (51) close to the glue (6), and the open end of the retaining wall (52) is located on a side of the light-through hole (51) away from the glue (6) and extends to the edge of the cover (5).

3. The optical sensor packaging structure with a retaining wall cover and a stepped glass filter according to claim 1 or 2, characterized in that: The retaining wall (52) and the cover (5) are integrally formed.

4. The optical sensor packaging structure with a retaining wall cover and a stepped glass filter according to claim 1, characterized in that: A plurality of grooves (41) are continuously formed on the glass filter (4), and a plurality of protrusions (53) are continuously formed on the cover (5); the plurality of protrusions (53) are staggered with the light-through holes (51), and the plurality of protrusions (53) can be correspondingly plugged into the plurality of grooves (41), so that the glass filter (4) and the cover (5) are matched and plugged, forming a stepped plug-in structure.

5. The optical sensor packaging structure with a retaining wall cover and a stepped glass filter according to claim 4, characterized in that: There are two protrusions (53), which are respectively located on two sides of the light-through hole (51); correspondingly, there are also two grooves (41).

6. The optical sensor packaging structure with a retaining wall cover and a stepped glass filter according to claim 4, characterized in that: The plurality of protrusions (53) are integrally formed with the cover (5).

7. The optical sensor packaging structure with a retaining wall cover and a stepped glass filter according to claim 4, characterized in that: The plurality of grooves (41) are integrally formed with the glass filter (4).

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