Optical assembly, light receiving device, light emitting device and laser radar

Abstract

The present disclosure provides an optical assembly comprising: a support layer comprising: a support portion comprising a plurality of support members; the light insulation part is arranged among the plurality of supporting pieces; the diaphragm layer is arranged on the supporting layer and comprises a plurality of connecting holes and a plurality of light through holes, and the connecting holes correspond to the supporting pieces respectively. The optical assembly adopts the supporting layer and the diaphragm layer, is simple in structure, small in size, easy to assemble, low in cost and high in production efficiency, can effectively inhibit stray light through the arrangement of the light isolation part and the supporting part, and can effectively inhibit stray light when being applied to a light emitting device and / or a light receiving device of a laser radar. In addition, crosstalk between detection light in the light emitting device and / or crosstalk between echo light in the light receiving device can be effectively suppressed, so that the signal-to-noise ratio of echo signals is improved, the point cloud quality of the laser radar is improved, and the accuracy of the detection result of the laser radar is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of laser radar, and in particular to an optical component, a light receiving device, a light emitting device and a laser radar. Background Art

[0002] LiDAR is a radar system that emits laser beams to detect the position, speed and other characteristic quantities of a target. LiDAR is widely used in fields such as autonomous driving and intelligent robots due to its advantages such as high resolution, good concealment, strong anti-active interference capability, small size and light weight.

[0003] For laser radars that use multiple detection channels, it is necessary to limit the emission of light outside the laser's field of view at the transmitting end and limit the incidence of light outside the detector's field of view at the receiving end to prevent the point cloud quality from being affected by stray light, crosstalk between detection light emitted by the laser, or crosstalk between echo light received by the detector. In addition, a filter needs to be placed at the receiving end of the laser radar, and a structural part is required to fix the filter. The existing structural parts are large in size, have high space requirements, are difficult to assemble, and do not suppress stray light. On the contrary, the larger the volume, the more likely it is to generate stray light.

[0004] Therefore, there is an urgent need for an optical component that can suppress stray light, is small in size, and is easy to assemble, for use in a light emitting device and / or a light receiving device of a laser radar to improve point cloud quality.

[0005] The contents of the background technology section are merely the technologies known to the inventors and do not necessarily represent the prior art in the field. Summary of the invention

[0006] In response to one or more problems existing in the prior art, the present disclosure provides an optical component that can effectively suppress stray light and has a simple structure, small size, and easy assembly. When applied to the laser radar's light emitting device and / or light receiving device, it can improve the point cloud quality of the laser radar.

[0007] The optical assembly comprises:

[0008] Support layer, including:

[0009] a support portion, comprising a plurality of support members; and

[0010] a light-isolating portion disposed between the plurality of supporting members; and

[0011] The aperture layer is arranged on the supporting layer, and includes a plurality of connecting holes and a plurality of light-through holes, wherein the plurality of connecting holes respectively correspond to the plurality of supporting members.

[0012] According to one aspect of the present disclosure, it also includes: a connecting layer, which is arranged on the aperture layer to fix the aperture layer and the supporting layer.

[0013] According to one aspect of the present disclosure, the connection layer includes a plurality of connection members, and the plurality of connection members are respectively connected to the plurality of connection holes and the plurality of support members.

[0014] According to one aspect of the present disclosure, the plurality of support members are arranged in at least two columns and / or in at least two rows.

[0015] According to one aspect of the present disclosure, the support members in adjacent columns are arranged in a staggered manner along the column direction, and / or the support members in adjacent rows are arranged in a staggered manner along the row direction.

[0016] According to one aspect of the present disclosure, the light isolation portion includes at least one light isolation member, and the light isolation member is arranged between support members of adjacent columns along the column direction and / or between support members of adjacent rows along the row direction.

[0017] According to one aspect of the present disclosure, the plurality of connection holes and the plurality of light-through holes are arranged in at least two columns and / or in at least two rows.

[0018] According to one aspect of the present disclosure, the connection holes in adjacent columns are arranged in a staggered manner along the column direction, and / or the connection holes in adjacent rows are arranged in a staggered manner along the row direction.

[0019] According to one aspect of the present disclosure, the light-through holes in adjacent columns are arranged in a staggered manner along the column direction, and / or the light-through holes in adjacent rows are arranged in a staggered manner along the row direction.

[0020] According to one aspect of the present disclosure, the connection holes and the light-through holes in each column are alternately arranged along the first direction, and / or the connection holes and the light-through holes in each row are alternately arranged along the second direction.

[0021] According to one aspect of the present disclosure, each connection hole has a hollow portion and a connection portion, and the connection portion is arranged corresponding to the support member.

[0022] According to one aspect of the present disclosure, the support member includes a planar support member and / or a boss support member.

[0023] According to one aspect of the present disclosure, the connector includes a planar connector and / or a boss connector.

[0024] According to one aspect of the present disclosure, the upper surface of the planar support member is lower than the aperture layer, and / or the upper surface of the boss support member is not lower than the aperture layer.

[0025] According to one aspect of the present disclosure, the aperture layer comprises a metal sheet.

[0026] According to one aspect of the present disclosure, the thickness of the metal sheet is less than or equal to 1 mm.

[0027] According to one aspect of the present disclosure, it further includes: a filter layer, the filter layer includes a plurality of filters, and the plurality of filters respectively correspond to the plurality of light holes to cover the plurality of light holes.

[0028] According to one aspect of the present disclosure, the aperture layer further includes: a plurality of grooves, and the plurality of light-through holes are respectively arranged in the plurality of grooves.

[0029] According to one aspect of the present disclosure, the groove has a trapezoidal cross-section, and the multiple filters are arranged in the multiple grooves one by one, so that the filter layer is fixedly connected to the aperture layer.

[0030] The present disclosure also provides a light receiving device, comprising:

[0031] Circuit boards;

[0032] a plurality of optical receivers disposed on the circuit board; and

[0033] As described above, the optical component has a support layer disposed on the circuit board, and a plurality of light-through holes of an aperture layer in the optical component respectively correspond to the plurality of light receivers.

[0034] According to one aspect of the present disclosure, the supporting layer includes a light-isolating portion and a supporting portion, and the light-isolating portion and the supporting portion are disposed on the circuit board.

[0035] According to one aspect of the present disclosure, the plurality of optical receivers are arranged in at least two columns and / or in at least two rows.

[0036] According to one aspect of the present disclosure, optical receivers in adjacent columns are arranged alternately along the column direction on the circuit board, and / or optical receivers in adjacent rows are arranged alternately along the row direction on the circuit board.

[0037] According to one aspect of the present disclosure, the support portion includes a plurality of support members, and the plurality of support members are arranged in at least two columns on the circuit board and / or are arranged in at least two rows on the circuit board.

[0038] According to one aspect of the present disclosure, the support members and the optical receivers in each column are alternately arranged along the column direction on the circuit board, and / or the support members and the optical receivers in each row are alternately arranged along the row direction on the circuit board.

[0039] According to one aspect of the present disclosure, the light isolation portion includes at least one light isolation member, and the light isolation member is disposed between adjacent columns of light receivers on the circuit board and / or between adjacent rows of light receivers on the circuit board.

[0040] According to one aspect of the present disclosure, the size of each light-through hole matches the receiving field of view of its corresponding light receiver.

[0041] The present disclosure also provides a light emitting device, comprising:

[0042] Circuit boards;

[0043] a plurality of light emitters disposed on the circuit board; and

[0044] As described above, the support layer of the optical component is arranged on the circuit board, and the multiple light-through holes of the aperture layer in the optical component respectively correspond to the multiple light emitters, so that the detection light emitted by each light emitter is emitted through its corresponding light-through hole.

[0045] According to one aspect of the present disclosure, the supporting layer includes a light-isolating portion and a supporting portion, and the light-isolating portion and the supporting portion are disposed on the circuit board.

[0046] According to one aspect of the present disclosure, the plurality of light emitters are arranged in at least two columns and / or in at least two rows.

[0047] According to one aspect of the present disclosure, light emitters in adjacent columns are arranged alternately along the column direction on the circuit board, and / or light emitters in adjacent rows are arranged alternately along the row direction on the circuit board.

[0048] According to one aspect of the present disclosure, the support portion includes a plurality of support members, and the plurality of support members are arranged in at least two columns on the circuit board and / or are arranged in at least two rows on the circuit board.

[0049] According to one aspect of the present disclosure, the support members and the light emitters in each column are alternately arranged along the column direction on the circuit board, and / or the support members and the light emitters in each row are alternately arranged along the row direction on the circuit board.

[0050] According to one aspect of the present disclosure, the light isolation portion includes at least one light isolation member, and the light isolation member is arranged between light emitters in adjacent columns on the circuit board and / or between light emitters in adjacent rows on the circuit board.

[0051] According to one aspect of the present disclosure, the size of the light-through hole matches the emission field of view of the corresponding light emitter.

[0052] The present disclosure also provides a laser radar, comprising:

[0053] A light emitting device, comprising a plurality of light emitters, each light emitter being configured to emit detection light for detecting an object;

[0054] a light receiving device, comprising a plurality of light receivers, each light receiver being configured to receive echo light reflected by the detection light from an object; and

[0055] a processing device, coupled to the light receiving device, and configured to obtain object information based on the echo light;

[0056] wherein the light emitting device comprises the light emitting device as described above; and / or

[0057] The light receiving device includes the light receiving device as described above.

[0058] The optical component disclosed in the present invention adopts a supporting layer and an aperture layer, which has a simple structure, a small size, is easy to assemble, has a low cost, and has a high production efficiency. By setting a light-isolating portion and a supporting portion, stray light can be effectively suppressed. When it is applied to a light emitting device and / or a light receiving device of a laser radar, it can also effectively suppress the crosstalk between the detection lights in the light emitting device and / or the crosstalk between the echo lights in the light receiving device, thereby helping to improve the signal-to-noise ratio of the echo signal, improve the point cloud quality of the laser radar, and improve the accuracy of the laser radar detection results.

[0059] Furthermore, the aperture layer can effectively reduce the side wall area of ​​the light hole by adopting a thin film design, thereby reducing the stray light formed by reflection from the side wall of the light hole being received by the laser radar optical receiver and reducing the overall size of the optical component.

[0060] Furthermore, a groove is provided in the aperture layer, and a light-through hole is provided in the groove to accommodate a filter. The filter covers the light-through hole, which can further suppress the stray light formed by the reflection from the side wall of the light-through hole from being received by the optical receiver of the laser radar, and can improve the integration of the optical component, thereby further reducing the size of the entire optical component.

[0061] Furthermore, the size of each light hole in the aperture layer matches the receiving field of view of its corresponding optical receiver, so that the echo light can be received by the corresponding optical receiver, which is beneficial to reducing the crosstalk between the echo lights received by the optical receiver, and can effectively reduce the stray light formed by the reflection of detection light or echo light by the internal components of the laser radar.

[0062] Furthermore, the size of each light hole in the aperture layer matches the emission field of view of its corresponding light emitter, so that the detection light emitted by the light emitter can be emitted through the corresponding light hole, avoiding crosstalk between the detection lights emitted by the light emitters and effectively reducing stray light formed by the detection light emitted from the light hole.

[0063] The optical component disclosed herein may also be provided with a connection layer, which may be fixed by various connection methods such as dispensing, injection molding, welding, etc., which is convenient and reliable, has strong bonding force, and can improve the reliability of the entire optical component.

[0064] Furthermore, the upper surface of the planar support is lower than the aperture layer, and / or the upper surface of the boss support is not lower than the aperture layer, which is conducive to connecting the material to wrap the support and can further enhance the reliability of the entire optical component.

[0065] The optical component disclosed in the present invention has a simple structure and is easy to assemble, which is beneficial to improving production efficiency and reducing production costs. The light emitting device disclosed in the present invention, by adopting the optical component, is beneficial to suppressing crosstalk between detection lights and can reduce the size of the entire light emitting device. The light receiving device disclosed in the present invention, by adopting the optical component, is beneficial to suppressing crosstalk between echo lights, improving the signal-to-noise ratio of echo signals, and can reduce the size of the entire light receiving device. The light emitting device and / or light receiving device of the laser radar disclosed in the present invention, by adopting the optical component, can improve the signal-to-noise ratio of the echo signal, improve the point cloud quality, and can reduce the size of the entire laser radar. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the present disclosure and do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0067] Figure 1 A schematic diagram of an optical assembly according to some embodiments of the present disclosure is shown;

[0068] Figure 2 shows an exploded view of an optical assembly according to some embodiments of the present disclosure;

[0069] Figure 3a-3d A schematic diagram showing the arrangement of support members and / or light isolation members according to some embodiments of the present disclosure is shown;

[0070] Figure 4a-4d A schematic diagram showing the arrangement of connection holes and light-through holes according to some embodiments of the present disclosure is shown;

[0071] Figure 4e A schematic diagram of a connection hole according to some embodiments of the present disclosure is shown;

[0072] Figure 5shows an exploded view of an optical assembly according to some embodiments of the present disclosure;

[0073] Figure 6a and Figure 6b A schematic diagram of a connector according to some embodiments of the present disclosure is shown;

[0074] Figure 7a-7c A schematic diagram showing a connection hole and a support member before and after being connected by a connection member according to some embodiments of the present disclosure;

[0075] Figure 8a and Figure 8b A schematic diagram showing the positional relationship between the support member and the aperture layer according to some embodiments of the present disclosure;

[0076] Fig. 9 A schematic diagram of an aperture layer according to some embodiments of the present disclosure is shown;

[0077] Fig.10 An exploded view of an optical assembly according to some other embodiments of the present disclosure is shown;

[0078] Figure 11a-Figure 11b A schematic diagram showing a light-through hole disposed in a groove according to some embodiments of the present disclosure is shown;

[0079] Fig.11c A schematic diagram showing a filter disposed in a groove according to some embodiments of the present disclosure;

[0080] Fig.12 shows an overall schematic diagram of an optical receiving device according to some embodiments of the present disclosure;

[0081] Fig.13 An exploded view of a light receiving device according to some embodiments of the present disclosure is shown;

[0082] Fig.14a and Fig.14b A schematic diagram showing the matching of the size of the light-through hole with the receiving field of view of the corresponding optical receiver and / or the transmitting field of view of the optical transmitter;

[0083] Fig.15 shows an exploded view of a light emitting device according to some embodiments of the present disclosure; and

[0084] Fig.16 A schematic diagram of a laser radar according to some embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0085] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present disclosure. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0086] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0087] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0088] In the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0089] The disclosure below provides many different embodiments or examples to realize different structures of the present disclosure. In order to simplify the disclosure of the present disclosure, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present disclosure. In addition, the present disclosure can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present disclosure provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0090] The embodiments of the present disclosure are described below in conjunction with the accompanying drawings. It should be understood that the embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0091] The present disclosure provides an optical component, which includes a support layer and an aperture layer, wherein the support layer includes a support portion and a light-isolating portion, the support portion includes a plurality of support members, and the light-isolating portion is arranged between the plurality of support members; the aperture layer is arranged on the support layer, and includes a plurality of connecting holes and a plurality of light-through holes, wherein the plurality of connecting holes correspond to the plurality of support members, respectively. The optical component of the present disclosure adopts a support layer and an aperture layer, and has a simple structure, a small volume, is easy to assemble, has a low cost, and has a high production efficiency. By setting the light-isolating portion and the support portion, stray light can be effectively suppressed. When it is applied to the light emitting device and / or light receiving device of a laser radar, crosstalk between detection lights in the light emitting device and / or crosstalk between echo lights in the light receiving device can also be effectively suppressed, thereby facilitating the improvement of the signal-to-noise ratio of the echo signal, the point cloud quality of the laser radar, and the accuracy of the laser radar detection results. The optical component of the present disclosure is introduced in detail below.

[0092] Figure 1 shows a schematic diagram of an optical assembly 100 according to some embodiments of the present disclosure, Figure 2 An exploded view of an optical assembly 100 according to some embodiments of the present disclosure is shown. Figure 1 and Figure 2 As shown, the optical component 100 includes a support layer 10 and an aperture layer 20, wherein the support layer 10 includes a support portion 11 and a light-isolating portion 12, the support portion 11 includes a plurality of support members 111, and the light-isolating portion 12 is arranged between the plurality of support members 111; the aperture layer 20 is arranged on the support layer 10 and covers the support layer 10, and the aperture layer 20 includes a plurality of connecting holes 21 and a plurality of light-through holes 22, wherein the plurality of connecting holes 21 correspond to the plurality of support members 111, respectively. The optical component disclosed in the present invention adopts a support layer and an aperture layer, has a simple structure, a small volume, is easy to assemble, has a low cost, and has a high production efficiency. By arranging the light-isolating portion and the support portion, stray light can be effectively suppressed.

[0093] In the optical assembly of the present disclosure, the support layer includes a support portion, the support portion includes a plurality of support members, and the plurality of support members can be arranged in at least two columns and / or in at least two rows. Figure 3a As shown, the plurality of support members 111 may be arranged in two rows. Figure 3b As shown, the plurality of support members 111 may be arranged in three rows. Although not shown in the figure, it should be understood that the plurality of support members 111 may also be arranged in four rows, five rows, six rows or even more rows. Figure 3c As shown, the plurality of support members 111 may be arranged in two rows. Figure 3d As shown, the plurality of support members 111 may be arranged in 3 rows. Although not shown in the figure, it should be understood that the plurality of support members 111 may also be arranged in 4 rows, 5 rows, 6 rows or even more rows.

[0094] In the optical assembly of the present disclosure, the support members of adjacent columns may be arranged in a staggered manner along the column direction, and / or the support members of adjacent rows may be arranged in a staggered manner along the row direction. Figure 3a In the two rows of support members 111 shown, the support members 111 in adjacent rows may be arranged in a staggered manner along the row direction (eg, vertical direction, N1 direction in the figure). Figure 3b In the three columns of support members 111 shown, the support members 111 in adjacent columns may also be arranged in a staggered manner along the column direction (eg, vertical direction, N1 direction in the figure). It should be understood that for more columns of support members, the staggered arrangement of the support members in adjacent columns is the same as that in FIG. Figure 3a and Figure 3b The situation described is similar and will not be repeated here. Figure 3c In the two rows of support members 111 shown, the support members 111 in adjacent rows may be arranged in a staggered manner along the row direction (eg, horizontal direction, N2 direction in the figure). Figure 3d In the three rows of support members 111 shown, the support members 111 in adjacent rows may be arranged in a staggered manner along the row direction (eg, horizontal direction, N2 direction in the figure). It should be understood that for more rows of support members, the staggered arrangement of the support members in adjacent rows may be different from that in FIG. Figure 3c and Figure 3d The situations described are similar and will not be described here in detail. It should be noted that the present disclosure does not limit the specific staggered arrangement of the support members. Optionally, the support members of adjacent columns and / or adjacent rows can be staggered in a slash-shaped manner such as " / ", or in a zigzag manner such as "Μ", or even in other staggered manners, all of which are within the scope of protection of the present disclosure.

[0095] The support member includes a plane support member and / or a boss support member, wherein the support member whose upper surface is plane is a plane support member, and the support member whose upper surface is boss-shaped is a boss support member. Figure 3a As shown, the planar support member 111 P The upper surface of the boss support 111 is flat. BThe upper surface of the support member 111 is a boss shape, and the support member 111 can also be a flat support member 111 P and boss support 111 B Although not shown in the figure, alternatively, the support member 111 may also be a planar support member 111. P , or only the boss support 111 is used B , depending on the actual situation.

[0096] The supporting part in the supporting layer is introduced above. It should be noted that the number, type and specific arrangement of the supporting members included in the supporting part are not limited by the present disclosure and can be flexibly adjusted according to needs in practical applications. The light-isolating part in the supporting layer is introduced below.

[0097] In the optical component disclosed herein, the light isolation portion includes at least one light isolation member, and the light isolation member can be arranged between support members of adjacent columns along the column direction and / or between support members of adjacent rows along the row direction.

[0098] Figure 1 , Figure 2 , Figure 3a and Figure 3c 1 shows a case where the light isolation portion 12 includes a light isolation member 121. Figure 1-Figure 3a As shown, the light isolation member 121 can be arranged between the support members 111 of adjacent columns along the column direction (eg, the vertical direction, N1 direction in the figure), forming a “|” shape. Figure 3c As shown, the light isolation member 121 can be arranged between the support members of adjacent rows along the row direction (e.g., the horizontal direction, the N2 direction in the figure), for example, in a "—" shape. In addition, the light isolation member 121 can also be arranged between the support members of adjacent columns and adjacent rows, for example, in a "+" shape (not shown in the figure). However, the present disclosure is not limited to this, and the light isolation member 121 can also be arranged between the support members of adjacent columns and / or adjacent rows at a certain inclination angle, for example, in a " / " shape, a "\" shape, an "X" shape, etc.

[0099] Figure 3b and Figure 3d 1 shows a case where the light isolation portion 12 includes a plurality of light isolation members 121. Figure 3b As shown, the light isolation members 121a, 121b and 121c can be arranged between the support members 111 of adjacent columns along the column direction (eg, the vertical direction, N1 direction in the figure). Figure 3d As shown, the light isolation members 121a, 121b and 121c can be arranged between the support members 111 of adjacent rows along the row direction (eg, the horizontal direction, N2 direction in the figure). It should be understood that the arrangement of more light isolation members is similar to that of Figure 3b and Figure 3d The situation described in the embodiment is similar and will not be repeated here.

[0100] The light-isolating portion in the support layer is introduced in detail above. It should be noted that the number and arrangement of the light-isolating components included in the light-isolating portion are not limited by the present disclosure and can be flexibly adjusted according to requirements in practical applications.

[0101] The aperture layer in the optical component is introduced below.

[0102] like Figure 2 As shown, the aperture layer 20 is arranged on the support layer 10 and covers the support layer 10. The aperture layer 20 includes a plurality of connecting holes 21 and a plurality of light-through holes 22, wherein the plurality of connecting holes 21 correspond to the plurality of supporting members 111 respectively. As mentioned above, the supporting member includes a planar supporting member 111 P and / or boss support 111 B In order to make the connection hole correspond to the support member, the connection hole 21 includes a plane connection hole 21 P and / or boss connection hole 21 B , wherein the plane connection hole 21 P Can be with the plane support 111 P Correspondingly, the boss connection hole 21 B Can be with boss support 111 B Corresponding. Figure 2 As shown, when the support member 111 is a planar support member 111 P and boss support 111 B When, accordingly, the connection hole 21 also adopts a plane connection hole 21 P and boss connection hole 21 B Although not shown in the figure, it should be understood that when the support member 111 is only a planar support member 111 P , or only the boss support 111 is used B When, accordingly, the connection hole 21 only uses a plane connection hole 21 P Or only use the boss connection hole 21 B The number, type and arrangement of the connection holes 21 correspond to the number, type and arrangement of the support members 111 .

[0103] In the aperture layer, multiple connecting holes and multiple light-transmitting holes can be arranged in at least two columns and / or in at least two rows.

[0104] like Figure 4a As shown, the plurality of connection holes 21 can be arranged in two rows. Figure 4b As shown, the plurality of connection holes 21 can be arranged in 3 rows. Although not shown in the figure, it should be understood that the plurality of connection holes 21 can be arranged in 4 rows, 5 rows, 6 rows or even more rows. Figure 4c As shown, the plurality of connection holes 21 can be arranged in two rows. Figure 4dAs shown, the plurality of connection holes 21 may be arranged in 3 rows. Although not shown in the figure, it should be understood that the plurality of connection holes 21 may also be arranged in 4 rows, 5 rows, 6 rows or even more rows.

[0105] like Figure 4a As shown, the plurality of light-through holes 22 can be arranged in two rows. Figure 4b As shown in the figure, the plurality of light holes 22 can be arranged in 3 rows. Although not shown in the figure, it should be understood that the plurality of light holes 22 can be arranged in 4 rows, 5 rows, 6 rows or even more rows. Figure 4c As shown, the plurality of light-through holes 22 can be arranged in two rows. Figure 4d As shown, the plurality of light-through holes 22 may be arranged in 3 rows. Although not shown in the figure, it should be understood that the plurality of light-through holes 22 may also be arranged in 4 rows, 5 rows, 6 rows or even more rows.

[0106] In the aperture layer, the connection holes of adjacent columns may be arranged in a staggered manner along the column direction, and / or the connection holes of adjacent rows may be arranged in a staggered manner along the row direction. Figure 4a In the two rows of connection holes 21 shown, the connection holes 21 in adjacent rows may be arranged alternately along the row direction (eg, the vertical direction, N1 direction in the figure). Figure 4b In the three rows of connection holes 21 shown, the connection holes 21 in adjacent rows may be arranged in a staggered manner along the row direction (eg, vertical direction, N1 direction in the figure). It should be understood that for more rows of connection holes, the staggered arrangement of the connection holes in adjacent rows may be different from that in FIG. Figure 4a and Figure 4b The situation described is similar and will not be repeated here. Figure 4c As shown in the two rows of connection holes 21, the connection holes 21 in adjacent rows may be arranged alternately along the row direction (eg, horizontal direction, N2 direction in the figure). Figure 4d In the three rows of connection holes 21 shown, the connection holes 21 in adjacent rows may be arranged in a staggered manner along the row direction (eg, horizontal direction, N2 direction in the figure). It should be understood that for more rows of connection holes, the staggered arrangement of the connection holes in adjacent rows may be different from that in FIG. Figure 4c and Figure 4d The described situation is similar and will not be repeated here.

[0107] In the aperture layer, the light holes in adjacent columns may be arranged in a staggered manner along the column direction, and / or the light holes in adjacent rows may be arranged in a staggered manner along the row direction. Figure 4a In the two columns of light-through holes 22 shown, the light-through holes 22 in adjacent columns may be arranged alternately along the column direction (eg, the vertical direction, N1 direction in the figure). Figure 4b In the three columns of light holes 22 shown, the light holes 22 in adjacent columns can be arranged in a staggered manner along the column direction (for example, the vertical direction, the direction N1 in the figure). It should be understood that for more columns of light holes, the staggered arrangement of the light holes in adjacent columns is the same as Figure 4a and Figure 4b The situation described is similar and will not be repeated here. Figure 4c In the two rows of light-through holes 22 shown, the light-through holes 22 in adjacent rows may be arranged alternately along the row direction (eg, the horizontal direction, N2 direction in the figure). Figure 4d In the three rows of light holes 22 shown, the light holes 22 in adjacent rows may be arranged in a staggered manner along the row direction (eg, horizontal direction, N2 direction in the figure). It should be understood that for more rows of light holes, the staggered arrangement of the light holes in adjacent rows may be different from that in FIG. Figure 4c and Figure 4d The described situation is similar and will not be repeated here.

[0108] In the aperture layer, the connection holes and the light-through holes in each column may be arranged alternately along the column direction, and / or the connection holes and the light-through holes in each row may be arranged alternately along the row direction. Figure 4a and Figure 4b The connection holes 21 and the light-through holes 22 in each column may be arranged alternately along the column direction (eg, the vertical direction, N1 direction in the figure). Figure 4c and Figure 4d The connection holes 21 and the light-through holes 22 in each row may be arranged alternately along the row direction (eg, the horizontal direction, N2 direction in the figure).

[0109] In the aperture layer, the types of connection holes in the same row can be the same, refer to Figure 4a and Figure 4b The connection holes 21 in the same row can all be plane connection holes 21 P Or both use boss connection holes 21 B , the plane connection holes in the same row 21 P The boss connection holes 21 in the same row can be arranged alternately with the light-through holes 22. B Although not shown in the figure, the connection holes in the same row can also use different types of connection holes. For example, the connection holes in the same row can also use planar connection holes 21. P and boss connection hole 21 B , the plane connection holes in the same row 21 P , light-through hole 22, and boss connection hole 21 B Similarly, in the aperture layer, the types of connection holes in the same row can be the same, refer to Figure 4c and Figure 4d The connection holes 21 in the same row can all be plane connection holes 21 P Or both use boss connection holes 21 B , the plane connection holes in the same row 21 P The boss connection holes 21 in the same row can be arranged alternately with the light-through holes 22. B Although not shown in the figure, the connection holes in the same row can also use different types of connection holes. For example, the connection holes in the same row can also use planar connection holes 21.P and boss connection hole 21 B , the plane connection holes in the same row 21 P , light-through hole 22, and boss connection hole 21 B Can be arranged alternately.

[0110] In the aperture layer, each connecting hole has a hollow portion and a connecting portion, and the connecting portion is arranged corresponding to the supporting member. Figure 4e Schematic diagram of the connection hole 21 according to some embodiments of the present disclosure is shown. Figure 4e As shown, the connection hole 21 includes a hollow portion 21 H and the connection portion 21 L The connection hole 21 described here can be a plane connection hole 21 P , or it can be a boss connection hole 21 B . Plane connection hole 21 P The connection part 21 L Can be with the plane support 111 P Corresponding settings (see Figure 7a ), boss connection hole 21 B The connection part 21 L Can be with boss support 111 B Corresponding settings (see Figure 7b ).

[0111] The optical component 100 may further include a connecting layer 30. Figure 5 As shown, the connection layer 30 can be arranged on the aperture layer 20, so that the aperture layer 20 and the support layer 10 are fixedly connected. The connection layer 30 can include a plurality of connection members 31, and the plurality of connection members 31 can be respectively connected to the plurality of connection holes 21 and the plurality of support members 111.

[0112] As mentioned above, the support member 111 includes a planar support member 111 P and / or boss support 111 B The connection hole 21 includes a plane connection hole 21 P and / or boss connection hole 21 B , in order to make the connection member 31 correspondingly connected to the connection hole 21 and the support member 111, refer to Figure 5 , the connecting member 31 includes a planar connecting member 31 P and / or boss connector 31 B , wherein the plane connecting member 31 P Can be connected with plane hole 21 P and a plane support member 111 P Corresponding connection, boss connection 31 B Can be connected with boss hole 21 B and boss support 111 BCorresponding connection.

[0113] In the connection layer, each connection piece has a hollow connection portion and a support piece connection portion. Figure 6a The planar connector 31 is shown P An enlarged view of Figure 6a As shown, the plane connecting member 31 P Including hollow connection part 31 H and the support member connecting portion 31 L . Figure 6b The boss connector 31 is shown B An enlarged view of Figure 6b As shown, the boss connector 31 B Also includes a hollow connection portion 31 H and the support member connecting portion 31 L .

[0114] In the optical assembly of the present disclosure, the hollow connection portion of each connector can be connected to the hollow portion of the corresponding connection hole. Figure 7a As shown, the plane connecting member 31 P The hollow connection portion 31 H Can be connected with plane hole 21 P The hollow part 21 H Connection. Figure 7b As shown, the boss connector 31 B The hollow connection portion 31 H Can be connected with boss hole 21 B The hollow part 21 H connect.

[0115] In the optical assembly of the present disclosure, the support member connecting portion of each connecting member can be connected to its corresponding supporting member. Figure 7a As shown, the plane connecting member 31 P Support member connection portion 31 L Can be with the plane support 111 P Connection. Figure 7b As shown, the boss connector 31 B Support member connection portion 31 L Can be with boss support 111 B connect.

[0116] In the optical assembly of the present disclosure, the support member connecting portion of each connecting member can be connected to its corresponding supporting member through the connecting portion of the corresponding connecting hole. Figure 7a As shown, the plane connecting member 31 P Support member connection portion 31 L Can be connected through the plane hole 21 P The connection part 21 L With the plane support 111P Connection. Figure 7b As shown, the boss connector 31 B Support member connection portion 31 L The boss connection hole 21 can be B The connection part 21 L With boss support 111 B Connection. The support member connecting portion of each connecting member is connected to its corresponding support member through the connecting portion of the corresponding connecting hole, so that the aperture layer and the support layer can be fixedly connected.

[0117] The hollow part of each connection hole can be injected with glue, injection molding material, welding material and other connection materials to enhance the connection between the aperture layer and the support layer. Figure 7a As shown, the plane connection hole 21 can be P The hollow part 21 H Fill the connection materials such as glue, injection molding material, welding material, etc. so that the connection materials overflow to the plane support member 111 P The side wall and the upper surface of the planar support member 111 are wrapped P , so that the planar support 111 P Connecting hole 21 with plane P The support layer 10 and the aperture layer 20 are more firmly bonded together, thereby increasing the connection strength between the support layer 10 and the aperture layer 20, and improving the reliability of the entire optical component. Figure 7b As shown, the boss connection hole 21 can be B The hollow part 21 H Fill the connection materials such as glue, injection molding material, welding material, etc. so that the connection materials overflow to the boss support 111 B The side wall and upper surface of the boss support 111 are wrapped B , so that the boss support 111 B Connecting hole 21 with boss B The supporting layer 10 and the aperture layer 20 are more firmly bonded together, thereby increasing the connection strength, and the reliability of the entire optical component can be improved.

[0118] like Figure 7c As shown, the light-through hole 22 is the boundary, and the left side of the figure is the connection hole 21 P / twenty one B With support member 111 P / 111 B Not through connector 31 P / 31 B Connected, the right side is the connection hole 21 P / twenty one B With support member 111 P / 111 B Through the connector 31 P / 31 B In the case of connection, in the connection hole 21 P / twenty one B The hollow part 21 H After filling the connection material, the connection material can wrap the support member 111 P / 111 B The side wall and the upper surface of the connector 31 are formed after solidification. P / 31 B , so that the connecting hole 21 P / twenty one B With support member 111 P / 111 B Through the connector 31 P / 31 B Connect, so that the connecting layer, the aperture layer and the supporting layer are firmly connected together.

[0119] In the optical assembly of the present disclosure, the upper surface of the planar support member may be lower than the aperture layer, and / or the upper surface of the boss support member may not be lower than the aperture layer. Figure 7a and Figure 8a As shown, the planar support member 111 P The upper surface of the aperture layer 20 can be lower than the aperture layer 20, so that the connection materials such as glue, injection molding material or solder can pass through the connection hole 21. P The hollow part 21 H Flow to the plane support 111 P The side wall and the upper surface are formed to wrap around the planar support member 111 P , thereby increasing the adhesion. Similarly, Figure 7b and Figure 8b As shown, the boss support member 111 B The upper surface of the aperture layer 20 is not lower than the aperture layer 20 (the figure shows an example of a situation where it is higher than), and the connecting material can pass through the connecting hole 21 B The hollow part 21 H Flow to the boss support 111 B The side wall and the upper surface wrap around the boss support 111 B The upper surface of the planar support is lower than the aperture layer, and / or the upper surface of the boss support is not lower than the aperture layer, so that the connection layer, the aperture layer and the support layer are more firmly connected together, which can further improve the reliability and service life of the entire optical component.

[0120] Optional, see Figure 7a-Figure 8b , the connection hole 21 of the aperture layer 20 (the plane connection hole 21 P and / or boss connection hole 21 B ) of the hollow portion 21 H The opening length or width is greater than the support member 111 (the planar support member 111P and / or boss support 111 B ) of the upper surface, so that more connecting materials can be drawn from the hollow portion 21 H Flowing into the connection hole 21 to wrap the support member 111 can further enhance the adhesive force and can further improve the reliability of the entire optical assembly.

[0121] In the optical assembly disclosed in the present invention, the aperture layer 20 may be made of a metal sheet to reduce the sidewall area of ​​the light hole, thereby reducing the stray light reflected by the sidewall of the light hole from being received by the laser radar light receiver, thereby improving the integration of the optical assembly and reducing the overall size of the optical assembly. Fig. 9 As shown, the thickness d of the metal sheet can be less than or equal to 1 mm. It should be noted that, in addition to metal materials, the aperture layer can also be made of other materials such as non-metal, and the thickness of the aperture layer is not limited to less than or equal to 1 mm. In practical applications, the material and thickness of the aperture layer can be flexibly adjusted according to needs, which are all within the protection scope of the present disclosure. Optionally, the aperture layer can also be blackened, such as electrophoretic blackening of the aperture layer using metal sheets, or ink coating of the aperture layer using non-metal sheets, to further suppress stray light.

[0122] The optical component 100 may further include a filter layer, such as Fig.10 As shown, the filter layer 40 includes a plurality of filters 41 , and the plurality of filters 41 respectively correspond to the plurality of light through holes 22 to cover the plurality of light through holes 22 .

[0123] In the optical component of the present disclosure, the aperture layer may further include a plurality of grooves, and the plurality of light-through holes may be respectively arranged in the plurality of grooves. Taking one of the grooves as an example, Fig.11a and Fig.11b As shown, the light-through hole 22 may be disposed in the groove 22A.

[0124] In the optical assembly of the present disclosure, the plurality of filters can be arranged in the plurality of grooves in a one-to-one correspondence, so that the filter layer is fixedly connected to the aperture layer. Fig.11c As shown, the filter 41 can be disposed in the groove 22A. It should be understood that the size of the groove is larger than the size of the filter to accommodate the filter; the size of the filter is larger than the size of the light hole to cover the light hole, thereby further suppressing the stray light formed by the reflection of the side wall of the light hole from being received by the laser radar optical receiver, improving the integration of the optical component, and reducing the overall size of the optical component.

[0125] Reference Fig.11cWhen the filter 41 is placed in the groove 22A, there is a certain gap between the groove 22A and the filter 41. A connecting material (such as glue, injection molding material or solder, etc.) can be injected into the gap to connect the groove 22A and the filter 41, so that the aperture layer and the filter layer are fixedly connected, thereby enhancing the reliability of the entire optical component.

[0126] In the optical component of the present disclosure, the groove has a trapezoidal cross section. Taking one of the grooves as an example, Fig.11a and Fig.11b As shown, the groove 22A has a trapezoidal cross section (refer to Fig.11a The optical filter 41 is provided at the trapezoidal cross section of the groove 22A to increase the gap between the groove 22A and the optical filter 41, so that more connecting material can be filled in the gap to further enhance the adhesion between the groove 22A and the optical filter 41, thereby enhancing the adhesion between the filter layer and the aperture layer, and thus enhancing the reliability of the entire optical component.

[0127] The above describes the optical components of the present disclosure. The present disclosure also provides a light receiving device. Fig.12 shows an overall schematic diagram of an optical receiving device 200 according to some embodiments of the present disclosure, Fig.13 An exploded view of an optical receiving device 200 according to some embodiments of the present disclosure is shown. Fig.12 and Fig.13 As shown, the optical receiving device 200 includes a circuit board 210, a plurality of optical receivers 220, and the optical assembly 100 as described above, wherein the plurality of optical receivers are arranged on the circuit board 210, the support layer 10 of the optical assembly 100 is arranged on the circuit board 210, and the plurality of light holes 22 of the aperture layer 20 in the optical assembly 100 respectively correspond to the plurality of optical receivers 220. The optical receiving device of the present disclosure adopts the above optical assembly, which is conducive to suppressing the crosstalk between the echo lights in the optical receiving device, and is conducive to improving the signal-to-noise ratio of the echo signal, improving the point cloud quality of the laser radar, and improving the accuracy of the laser radar detection result.

[0128] In the light receiving device of the present disclosure, the optical component 100 may include a support layer 10, an aperture layer 20, a connection layer 30 and a filter layer 40. In the light receiving device of the present disclosure, as Fig.12 and Fig.13 As shown, the support layer 10 includes a light-isolating portion 12 and a support portion 11 , and the light-isolating portion 12 and the support portion 11 may be disposed on the circuit board 210 .

[0129] In the optical receiving device of the present disclosure, the plurality of optical receivers 220 may be arranged in at least two columns and / or in at least two rows. Fig.12 and Fig.13As shown, the multiple light receivers 220 can be arranged in two columns. Although not shown in the figure, it is understood that the multiple light receivers 220 can be arranged in 3 columns, 4 columns, 5 columns, 6 columns or even more columns. Similarly, although not shown in the figure, the multiple light receivers 220 can be arranged in 2 rows, 3 rows, 4 rows, 5 rows, 6 rows or more rows. The following will continue to introduce the multiple light receivers arranged in 2 columns as an example. It should be understood that the situation where the multiple light receivers are arranged in more columns and / or the situation where the multiple light receivers are arranged in at least 2 rows is similar and will not be repeated here.

[0130] In the optical receiving device of the present disclosure, the optical receivers of adjacent columns are arranged alternately along the column direction on the circuit board, and / or the optical receivers of adjacent rows are arranged alternately along the row direction on the circuit board. Fig.12 and Fig.13 As shown, the optical receivers 220 in adjacent columns can be arranged in a staggered manner along the column direction (e.g., vertical direction, N1 direction in the figure) on the circuit board 210. Similarly, although not shown in the figure, the optical receivers 220 in adjacent rows can be arranged in a staggered manner along the row direction (e.g., horizontal direction, refer to N2 direction in the figure) on the circuit board 210. The staggered arrangement of the optical receivers in adjacent columns and / or adjacent rows can further suppress the crosstalk between the echo lights in the optical receiving device.

[0131] In the optical receiving device of the present disclosure, the supporting portion includes a plurality of supporting members, and the plurality of supporting members are arranged in at least two columns on the circuit board and / or arranged in at least two rows on the circuit board. Fig.12 and Fig.13 As shown, the support portion 11 includes a plurality of support members 111, and the plurality of support members 111 can be arranged in two rows on the circuit board 210. Although not shown in the figure, the plurality of support members 111 can be arranged in 3 rows, 4 rows, 5 rows, 6 rows or even more rows on the circuit board 210. Similarly, although not shown in the figure, the plurality of support members 111 can be arranged in 2 rows, 3 rows, 4 rows, 5 rows, 6 rows or more rows on the circuit board 210.

[0132] In the optical receiving device of the present disclosure, the support members and the optical receivers of each column may be arranged alternately along the column direction on the circuit board, and / or the support members and the optical receivers of each row may be arranged alternately along the row direction on the circuit board. Fig.12 and Fig.13For the two columns of support members 111 shown, the support members 111 and the optical receivers 220 in each column may be arranged alternately along the column direction (e.g., vertical direction, N1 direction in the figure) on the circuit board 210. Although not shown in the figure, similarly, for more columns of support members 111, the support members 111 and the optical receivers 220 in each column may also be arranged alternately along the column direction (e.g., vertical direction, refer to N1 direction in the figure) on the circuit board 210. In addition, although not shown in the figure, the support members 111 and the optical receivers 220 in each row may be arranged alternately along the row direction (e.g., horizontal direction, refer to N2 direction in the figure) on the circuit board 210. The alternating arrangement of the support members and the optical receivers in each column and / or the alternating arrangement of the support members and the optical receivers in each row may further suppress the crosstalk between the echo lights in the optical receiving device.

[0133] It should be noted that Fig.12 and Fig.13 In the embodiment of the present invention, the support portion 11 uses different types of support members 111, including a planar support member 111 P and boss support 111 B In addition, the support portion 11 may also use the same type of support members, for example, only using a planar support member 111 P Or only the boss support 111 is used B , depending on the actual situation.

[0134] In the optical receiving device of the present disclosure, the light isolation portion may include at least one light isolation member, and the light isolation member is arranged between adjacent columns of optical receivers on the circuit board, and / or between adjacent rows of optical receivers on the circuit board. For example, the light isolation portion 12 includes a light isolation member 121. Fig.12 and Fig.13As shown, the light isolation member 121 can be arranged between the light receivers 220 in adjacent columns on the circuit board 210 along the column direction (e.g., the vertical direction, the N1 direction in the figure). In addition, although not shown in the figure, the light isolation member 121 can be arranged between the light receivers 220 in adjacent rows on the circuit board 210 along the row direction (e.g., the horizontal direction, refer to the N2 direction in the figure). For the case where the light isolation portion 12 includes a plurality of light isolation members 121, for example, if the light receiving device includes 3 columns of light receivers, then 2 light isolation members need to be arranged, and the 2 light isolation members are respectively arranged between the light receivers in adjacent columns; for another example, if the light receiving device includes 4 columns of light receivers, then 3 light isolation members need to be arranged, and the 3 light isolation members are respectively arranged between the light receivers in adjacent columns, and so on. Similarly, for example, if the light receiving device includes 3 rows of light receivers, then 2 light isolation members need to be provided, and the 2 light isolation members are respectively provided between light receivers in adjacent rows; for another example, if the light receiving device includes 4 rows of light receivers, then 3 light isolation members need to be provided, and the 3 light isolation members are respectively provided between light receivers in adjacent rows, and so on. It can be seen that the number and arrangement of the light isolation members in the light isolation part are related to the arrangement of the light receivers.

[0135] In the light receiving device disclosed in the present invention, the aperture layer 20 may also have a plurality of connection holes 21, and the plurality of connection holes 21 may be arranged in at least two columns and / or in at least two rows. The plurality of light-through holes 22 may also be arranged in at least two columns and / or in at least two rows. It should be noted that: Fig.12 and Fig.13 Only the case where the plurality of connection holes 21 and the plurality of light-through holes 22 are arranged in two rows is illustrated. Although not shown in the figure, it can be understood that the plurality of connection holes 21 and the plurality of light-through holes 22 can also be arranged in three rows, four rows, five rows, six rows or even more rows, and / or arranged in two rows, three rows, four rows, five rows, six rows or more rows, all of which are within the protection scope of the present disclosure.

[0136] In the optical receiving device of the present disclosure, the connection holes 21 of adjacent columns may be arranged in a staggered manner along the column direction (eg, the vertical direction, N1 direction in the figure) (see Figure 4a and Figure 4b ), and / or the connection holes 21 of adjacent rows may be arranged in a staggered manner along the row direction (eg, horizontal direction, N2 direction in the figure) (refer to Figure 4c and Figure 4d ).

[0137] In the light receiving device disclosed in the present invention, the light holes 22 in adjacent columns may be arranged in a staggered manner along the column direction (eg, the vertical direction, N1 direction in the figure) (see Figure 4a and Figure 4b ), and / or adjacent rows of light holes 22 may be arranged in a staggered manner along the row direction (eg, horizontal direction, N2 direction in the figure) (refer to Figure 4c and Figure 4d).

[0138] In the optical receiving device disclosed in the present invention, the connection holes 21 and the light-through holes 22 in each column can be arranged alternately along the column direction (eg, the vertical direction, N1 direction in the figure) (see Figure 4a and Figure 4b ), and / or the connection holes 21 and the light-through holes 22 of each row may be arranged alternately along the row direction (eg, the horizontal direction, N2 direction in the figure) (refer to Figure 4c and Figure 4d ).

[0139] In the light receiving device of the present disclosure, the size of each light through hole 22 matches the receiving field of view of the corresponding light receiver 220. Fig.14a and Fig.14b As shown, assuming that the receiving field of view of the optical receiver 220 is FOV, the size of the light hole 22 should match the receiving field of view FOV, so that the echo light can be received by its corresponding optical receiver 220 through the light hole 22, thereby reducing the crosstalk between the echo lights received by the optical receivers, such as reducing the echo light corresponding to adjacent optical receivers, and can effectively reduce the stray light formed by the reflection of detection light or echo light by the internal components of the laser radar from being received by the optical receiver.

[0140] In the optical receiving device disclosed herein, a plurality of optical receivers 220 may be arranged in a one-dimensional array or a two-dimensional array, and each optical receiver 220 may include a plurality of pixels (not shown), and each pixel may include at least one single photon avalanche diode (SPAD).

[0141] The present disclosure also provides a light emitting device 300, Fig.15 A schematic diagram of a light emitting device 300 according to some embodiments of the present disclosure is shown. Fig.15 As shown, the light emitting device 300 includes a circuit board 310, a plurality of light emitters 320, and an optical assembly 100. The light emitting device 300 is different from the light receiving device 200 in that the light emitting device 300 may not include the filter layer 40. Fig.15As shown, the multiple light emitters 320 can be arranged on the circuit board 310; the support layer 10 of the optical component 300 can be arranged on the circuit board 310, and the multiple light holes 22 of the aperture layer 20 in the optical component 300 correspond to the multiple light emitters 320 respectively, so that the detection light emitted by each light emitter 320 is emitted through its corresponding light hole 22. The light emitting device disclosed in the present invention adopts the above optical component, which can effectively suppress the crosstalk between the detection lights in the light emitting device, for example, reduce the detection light emitted by adjacent light emitters from entering the emission field of the light emitter, which is conducive to improving the signal-to-noise ratio of the echo signal, improving the point cloud quality of the laser radar, and improving the accuracy of the laser radar detection results.

[0142] In the light emitting device disclosed in the present invention, Fig.15 As shown, the supporting layer 10 includes a light-isolating portion 12 and a supporting portion 11. The light-isolating portion 12 and the supporting portion 11 can be arranged on the circuit board 310, which is beneficial to suppressing the crosstalk between the detection lights in the light emitting device.

[0143] In the light emitting device of the present disclosure, the plurality of light emitters 320 may be arranged in at least two columns and / or in at least two rows. Fig.15 As shown, the multiple light emitters 320 can be arranged in two columns. Although not shown in the figure, it is understood that the multiple light emitters 320 can also be arranged in 3 columns, 4 columns, 5 columns, 6 columns or even more columns. Similarly, although not shown in the figure, the multiple light emitters 320 can be arranged in 2 rows, 3 rows, 4 rows, 5 rows, 6 rows or more rows. The following is an example of multiple light emitters 320 arranged in 2 columns. It should be understood that the situation where multiple light emitters are arranged in more columns and / or multiple light emitters are arranged in at least 2 rows is similar and will not be repeated here.

[0144] In the light emitting device disclosed in the present invention, light emitters in adjacent columns are arranged alternately along the column direction on the circuit board, and / or light emitters in adjacent rows are arranged alternately along the row direction on the circuit board. Fig.15 As shown, light emitters 320 in adjacent columns may be arranged in a staggered manner along the column direction (e.g., vertical direction, N1 direction in the figure) on the circuit board 310. Similarly, although not shown in the figure, light emitters 320 in adjacent rows may be arranged in a staggered manner along the row direction (e.g., horizontal direction, refer to N2 direction in the figure) on the circuit board 310. The staggered arrangement of light emitters in adjacent columns and / or adjacent rows may further suppress crosstalk between detection lights in the light emitting device.

[0145] In the light emitting device of the present disclosure, the support portion includes a plurality of support members, and the plurality of support members are arranged in at least two columns on the circuit board and / or arranged in at least two rows on the circuit board. Fig.15As shown, the support portion 11 includes a plurality of support members 111, and the plurality of support members 111 can be arranged in two rows on the circuit board 310. Although not shown in the figure, the plurality of support members 111 can be arranged in 3 rows, 4 rows, 5 rows, 6 rows or even more rows on the circuit board 310. Similarly, although not shown in the figure, the plurality of support members 111 can be arranged in 2 rows, 3 rows, 4 rows, 5 rows, 6 rows or more rows on the circuit board 310.

[0146] In the light emitting device disclosed in the present invention, the support members and light emitters of each column may be arranged alternately along the column direction on the circuit board, and / or the support members and light emitters of each row may be arranged alternately along the row direction on the circuit board. Fig.15 For the two columns of support members 111 shown, the support members 111 and the light emitters 320 in each column can be arranged alternately along the column direction (e.g., vertical direction, N1 direction in the figure) on the circuit board 310. Although not shown in the figure, similarly, for more columns of support members 111, the support members 111 and the light emitters 320 in each column can also be arranged alternately along the column direction (e.g., vertical direction, refer to N1 direction in the figure) on the circuit board 310. In addition, although not shown in the figure, the support members 111 and the light emitters 320 in each row can be arranged alternately along the row direction (e.g., horizontal direction, refer to N2 direction in the figure) on the circuit board 310. The alternating arrangement of the support members and the light emitters in each column, and / or the alternating arrangement of the support members and the light emitters in each row can further suppress the crosstalk between the detection lights in the light emitting device.

[0147] It should be noted that Fig.15 In the embodiment of the present invention, the support portion 11 uses different types of support members 111, including a planar support member 111 P and boss support 111 B In addition, the support portion 11 may also use the same type of support members, for example, only using a planar support member 111 P Or only the boss support 111 is used B , depending on the actual situation.

[0148] In the light emitting device disclosed in the present invention, the light isolation portion may include at least one light isolation member, and the light isolation member is arranged between light emitters in adjacent columns on the circuit board, and / or between light emitters in adjacent rows on the circuit board. For example, the light isolation portion 12 includes a light isolation member 121. Fig.15As shown, the light isolation member 121 can be arranged between light emitters 320 in adjacent columns on the circuit board 310 along the column direction (e.g., the vertical direction, the N1 direction in the figure). In addition, although not shown in the figure, the light isolation member 121 can be arranged between light emitters 320 in adjacent rows on the circuit board 310 along the row direction (e.g., the horizontal direction, refer to the N2 direction in the figure). It should be understood that for the case where the light isolation portion 12 includes a plurality of light isolation members 121, for example, if the light emitting device includes 3 columns of light emitters, then 2 light isolation members need to be arranged, and the 2 light isolation members are respectively arranged between light emitters in adjacent columns; for another example, if the light emitting device includes 4 columns of light emitters, then 3 light isolation members need to be arranged, and the 3 light isolation members are respectively arranged between light emitters in adjacent columns, and so on. Similarly, for example, if the light emitting device includes 3 rows of light emitters, then 2 light isolation members need to be provided, and the 2 light isolation members are respectively provided between light emitters in adjacent rows; for another example, if the light emitting device includes 4 rows of light emitters, then 3 light isolation members need to be provided, and the 3 light isolation members are respectively provided between light emitters in adjacent rows, and so on. It can be seen that the number and arrangement of the light isolation members in the light isolation part are related to the arrangement of the light emitters.

[0149] In the light emitting device disclosed in the present invention, the aperture layer 20 may also have a plurality of connection holes 21 and a plurality of light-through holes 22, and the plurality of connection holes 21 and the plurality of light-through holes 22 may be arranged in at least two columns and / or in at least two rows. It should be noted that: Fig.15 Only the case where the plurality of connection holes 21 and the plurality of light-through holes 22 are arranged in two rows is illustrated. Although not shown in the figure, it can be understood that the plurality of connection holes 21 and the plurality of light-through holes 22 can also be arranged in three rows, four rows, five rows, six rows or even more rows, and / or arranged in two rows, three rows, four rows, five rows, six rows or more rows, all of which are within the protection scope of the present disclosure.

[0150] In the light emitting device disclosed in the present invention, the connection holes 21 in adjacent columns may be arranged in a staggered manner along the column direction (eg, the vertical direction, N1 direction in the figure) (see Figure 4a and Figure 4b ), and / or the connection holes 21 of adjacent rows may be arranged in a staggered manner along the row direction (eg, horizontal direction, N2 direction in the figure) (refer to Figure 4c and Figure 4d ).

[0151] In the light emitting device disclosed in the present invention, the light holes 22 in adjacent columns may be arranged in a staggered manner along the column direction (eg, the vertical direction, N1 direction in the figure) (see Figure 4a and Figure 4b ), and / or adjacent rows of light holes 22 may be arranged in a staggered manner along the row direction (eg, horizontal direction, N2 direction in the figure) (refer to Figure 4c and Figure 4d ).

[0152] In the light emitting device disclosed in the present invention, the connection holes 21 and the light-through holes 22 in each column can be arranged alternately along the column direction (eg, the vertical direction, N1 direction in the figure) (see Figure 4a and Figure 4b ), and / or the connection holes 21 and the light-through holes 22 of each row may be arranged alternately along the row direction (eg, the horizontal direction, N2 direction in the figure) (refer to Figure 4c and Figure 4d ).

[0153] In the light emitting device disclosed in the present invention, the size of each light through hole 22 matches the emission field of view of the corresponding light emitter 320. Taking a light through hole and its corresponding light emitter as an example, Fig.14a and Fig.14b As shown, assuming that the emission field of view of the light emitter 320 is FOV, the size of the light hole 22 should match the emission field of view FOV, so that the detection light emitted by the light emitter 320 can be emitted through the corresponding light hole 22, avoiding crosstalk between the detection lights emitted by the light emitter, and helping to reduce stray light formed by the detection light emitted from the light hole.

[0154] In the light emitting device disclosed herein, a plurality of light emitters may be arranged in a one-dimensional array or a two-dimensional array. Optionally, the light emitter includes a vertical-cavity surface-emitting laser (VCSEL).

[0155] The present disclosure also provides a laser radar 400, Fig.16 A schematic diagram of a laser radar 400 according to some embodiments of the present disclosure is shown. Fig.16 As shown, the laser radar 400 includes a light emitting device TX, a light receiving device RX and a processing device 430, wherein the light emitting device TX includes a plurality of light emitters 320, each light emitter 320 is configured to emit detection light Light for detecting an object OB; the light receiving device RX includes a plurality of light receivers 220, each light receiver 220 is configured to receive an echo light Light' reflected by the detection light Light on the object OB; the processing device 430 is coupled to the light receiving device RX, and is configured to obtain object information based on the echo light Light'; wherein the light emitting device TX includes the light emitting device 300 as described above; and / or the light receiving device RX includes the light receiving device 200 as described above, and the object information includes the distance of the object, reflectivity, etc.

[0156] Optionally, the laser radar 400 may be a solid-state laser radar, a forward scanning laser radar, or a mechanical rotating laser radar.

[0157] The present disclosure also provides a computer-readable storage medium, including computer-executable instructions stored thereon, which implement the operation of the laser radar as described above when executed by a processor.

[0158] In some embodiments, a computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by an instruction execution system, device, or device or used in combination therewith. The computer-readable storage medium may be any combination of one or more computer-readable media. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, or semiconductor form or device, and more specific examples (a non-exhaustive list) include: an electrical connection with one or more wires, a portable computer hard disk, a hard disk, a random access memory (RAM), a non-volatile random access memory (NVRAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0159] In addition, the present disclosure also provides a computer device (not shown in the figure), including a memory and a processor, wherein the memory is configured to store computer executable instructions, and the executable instructions implement the operation of the laser radar as described above when executed by the processor.

[0160] In some embodiments of the present disclosure, the processor and / or the processing device may include a central processing unit (CPU), and may also include other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The present disclosure is not limited to this and it depends on the specific circumstances.

[0161] The optical component disclosed in the present invention adopts a supporting layer and an aperture layer, which has a simple structure, a small size, is easy to assemble, has a low cost, and has a high production efficiency. By setting a light-isolating portion and a supporting portion, stray light can be effectively suppressed. When it is applied to a light emitting device and / or a light receiving device of a laser radar, it can also effectively suppress the crosstalk between the detection lights in the light emitting device and / or the crosstalk between the echo lights in the light receiving device, thereby helping to improve the signal-to-noise ratio of the echo signal, improve the point cloud quality of the laser radar, and improve the accuracy of the laser radar detection results.

[0162] Furthermore, the aperture layer can effectively reduce the side wall area of ​​the light-through hole by adopting a thin film design, thereby reducing the stray light generated by the emission from the side wall of the light-through hole being received by the laser radar's optical receiver and reducing the overall size of the optical component.

[0163] Furthermore, a groove is provided in the aperture layer, and a light-through hole is provided in the groove to accommodate a filter. The filter covers the light-through hole, which can further suppress the stray light formed by the reflection from the side wall of the light-through hole from being received by the optical receiver of the laser radar, and can improve the integration of the optical component, thereby further reducing the size of the entire optical component.

[0164] Furthermore, the size of each light hole in the aperture layer matches the receiving field of view of its corresponding optical receiver, so that the echo light can be received by the corresponding optical receiver, thereby reducing the crosstalk between the echo lights received by the optical receiver, and can effectively reduce the stray light formed by the reflection of detection light or echo light by the internal components of the laser radar.

[0165] Furthermore, the size of each light hole in the aperture layer matches the emission field of view of its corresponding light emitter, so that the detection light emitted by the light emitter can be emitted through the corresponding light hole, avoiding crosstalk between the detection lights emitted by the light emitters and effectively reducing stray light formed by the detection light emitted from the light hole.

[0166] The optical component disclosed herein may also be provided with a connection layer, which may be fixed by various connection methods such as dispensing, injection molding, welding, etc., which is convenient and reliable, has strong bonding force, and can improve the reliability of the entire optical component.

[0167] Furthermore, the upper surface of the planar support is lower than the aperture layer, and / or the upper surface of the boss support is not lower than the aperture layer, which is conducive to connecting the material to wrap the support and can further enhance the reliability of the entire optical component.

[0168] The optical component disclosed in the present invention has a simple structure and is easy to assemble, which is conducive to improving production efficiency and reducing production costs. By adopting the optical component, the light emitting device disclosed in the present invention can effectively suppress the crosstalk between detection lights and reduce the size of the entire light emitting device. By adopting the optical component, the light receiving device disclosed in the present invention can effectively suppress the crosstalk between echo lights, improve the signal-to-noise ratio of the echo signal, and reduce the size of the entire light receiving device. By adopting the optical component, the light emitting device and / or light receiving device of the laser radar disclosed in the present invention can improve the signal-to-noise ratio of the echo signal, improve the point cloud quality, improve the accuracy of the laser radar detection results, and reduce the size of the entire laser radar.

[0169] It should be noted that although the optical assembly, the light receiving device, the light emitting device, and several modules or submodules of the laser radar are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiment of the present disclosure, the features and functions of two or more modules described above can be implemented in one module. Conversely, the features and functions of one module described above can be further divided into multiple modules to be concretized.

[0170] Finally, it should be noted that the above is only an embodiment of the present disclosure and is not intended to limit the present disclosure. Although the present disclosure is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. An optical component, comprising: Support layer, including: a support portion, comprising a plurality of support members; and a light-isolating portion disposed between the plurality of supporting members; and The aperture layer is arranged on the supporting layer, and includes a plurality of connecting holes and a plurality of light-through holes, wherein the plurality of connecting holes respectively correspond to the plurality of supporting members.

2. The optical assembly according to claim 1, further comprising: The connecting layer is arranged on the aperture layer to fix the aperture layer and the supporting layer. 3 . The optical component according to claim 2 , wherein the connection layer comprises a plurality of connection members, and the plurality of connection members are respectively connected to the plurality of connection holes and the plurality of support members. 4 . The optical assembly according to claim 1 , wherein the plurality of support members are arranged in at least two columns and / or in at least two rows. 5 . The optical component according to claim 4 , wherein the support members in adjacent columns are arranged in a staggered manner along the column direction, and / or the support members in adjacent rows are arranged in a staggered manner along the row direction. 6 . The optical component according to claim 4 , wherein the light isolation portion comprises at least one light isolation member, and the light isolation member is disposed between support members of adjacent columns along a column direction and / or between support members of adjacent rows along a row direction. 7 . The optical component according to claim 1 , wherein the plurality of connecting holes and the plurality of light-through holes are arranged in at least two columns and / or in at least two rows. 8 . The optical component according to claim 7 , wherein the connection holes in adjacent columns are arranged alternately along the column direction, and / or the connection holes in adjacent rows are arranged alternately along the row direction. 9 . The optical component according to claim 7 , wherein the light-through holes in adjacent columns are arranged alternately along the column direction, and / or the light-through holes in adjacent rows are arranged alternately along the row direction.

10. The optical component according to claim 6, wherein the connection holes and the light-through holes in each column are arranged alternately along the column direction, and / or the connection holes and the light-through holes in each row are arranged alternately along the row direction. 11 . The optical assembly according to claim 1 , wherein each connecting hole has a hollow portion and a connecting portion, and the connecting portion is disposed corresponding to the supporting member.

12. The optical assembly according to claim 1, wherein the support member comprises a planar support member and / or a boss support member.

13. The optical assembly according to claim 3, wherein the connector comprises a planar connector and / or a boss connector.

14. An optical component according to claim 12, wherein the upper surface of the planar support is lower than the aperture layer, and / or the upper surface of the boss support is not lower than the aperture layer.

15. An optical component according to any one of claims 1-14, wherein the aperture layer comprises a metal foil. The optical component according to claim 15 , wherein the thickness of the metal sheet is less than or equal to 1 mm.

17. The optical assembly according to any one of claims 1 to 14, further comprising: The filter layer includes a plurality of filters, and the plurality of filters respectively correspond to the plurality of light through holes to cover the plurality of light through holes.

18. The optical component according to claim 17, wherein the aperture layer further comprises: A plurality of grooves, wherein the plurality of light-through holes are respectively arranged in the plurality of grooves.

19. An optical component according to claim 18, wherein the groove has a trapezoidal cross-section, and the multiple filters are arranged in the multiple grooves one by one, so that the filter layer is fixedly connected to the aperture layer.

20. A light receiving device, comprising: Circuit boards; A plurality of optical receivers are arranged on the circuit board; and The optical component as described in any one of claims 1 to 19, wherein the support layer of the optical component is arranged on the circuit board, and the multiple light-through holes of the aperture layer in the optical component respectively correspond to the multiple light receivers. 21 . The light receiving device according to claim 20 , wherein the support layer comprises a light blocking portion and a support portion, and the light blocking portion and the support portion are provided on the circuit board.

22. The optical receiving device according to claim 21, wherein the plurality of optical receivers are arranged in at least two columns and / or in at least two rows. 23 . The optical receiving device according to claim 22 , wherein the optical receivers in adjacent columns are arranged alternately along the column direction on the circuit board, and / or the optical receivers in adjacent rows are arranged alternately along the row direction on the circuit board. 24 . The optical receiving device according to claim 22 , wherein the supporting portion comprises a plurality of supporting members, and the plurality of supporting members are arranged in at least two columns on the circuit board and / or are arranged in at least two rows on the circuit board.

25. The optical receiving device according to claim 24, wherein the support members and the optical receivers in each column are alternately arranged along the column direction on the circuit board, and / or the support members and the optical receivers in each row are alternately arranged along the row direction on the circuit board. 26 . The optical receiving device according to claim 22 , wherein the light isolation portion comprises at least one light isolation member, and the light isolation member is arranged between adjacent columns of optical receivers on the circuit board and / or between adjacent rows of optical receivers on the circuit board.

27. The light receiving device according to any one of claims 20 to 26, wherein the size of each light through hole matches the receiving field of view of its corresponding light receiver.

28. A light emitting device, comprising: Circuit boards; A plurality of light emitters are arranged on the circuit board; and The optical component as described in any one of claims 1 to 16, wherein the support layer of the optical component is arranged on the circuit board, and the multiple light-through holes of the aperture layer in the optical component respectively correspond to the multiple light emitters, so that the detection light emitted by each light emitter is emitted through its corresponding light-through hole. 29 . The light emitting device according to claim 28 , wherein the supporting layer comprises a light-isolating portion and a supporting portion, and the light-isolating portion and the supporting portion are disposed on the circuit board.

30. The light emitting device according to claim 29, wherein the plurality of light emitters are arranged in at least two columns and / or in at least two rows.

31. The light emitting device according to claim 30, wherein light emitters in adjacent columns are arranged alternately along the column direction on the circuit board, and / or light emitters in adjacent rows are arranged alternately along the row direction on the circuit board.

32. The light emitting device according to claim 30, wherein the supporting portion comprises a plurality of supporting members, and the plurality of supporting members are arranged in at least two columns on the circuit board and / or are arranged in at least two rows on the circuit board.

33. The light emitting device according to claim 32, wherein the support members and the light emitters in each column are alternately arranged along the column direction on the circuit board, and / or the support members and the light emitters in each row are alternately arranged along the row direction on the circuit board.

34. The light emitting device according to claim 30, wherein the light isolation portion comprises at least one light isolation member, and the light isolation member is arranged between adjacent columns of light emitters on the circuit board and / or between adjacent rows of light emitters on the circuit board.

35. The light emitting device according to any one of claims 28-34, wherein the size of the light-through hole matches the emission field of view of its corresponding light emitter.

36. A laser radar, comprising: A light emitting device, comprising a plurality of light emitters, each light emitter being configured to emit detection light for detecting an object; A light receiving device, comprising a plurality of light receivers, each light receiver being configured to receive echo light reflected by the detection light from an object; and a processing device, coupled to the light receiving device, and configured to obtain object information based on the echo light; wherein the light emitting device comprises a light emitting device as claimed in any one of claims 28 to 35; and / or The light receiving device comprises the light receiving device according to any one of claims 20-27.

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