Optical device, optical device detection method, laser radar and movable device

Abstract

An optical device (22), a method for detecting an optical device, a laser radar (200), and a movable device, wherein the optical device (22) comprises: a device body (10) and an optical coating (11) disposed on the device body (10); the optical coating (11) is provided with an optically effective area (S), the optically effective area enveloping the outer contour of a light cross section (A); wherein the light cross section (A) is a cross section formed by the contact between the light (B) and the optical coating (11). The method can avoid quality inspection of the entire optical coating, reduce the workload of inspection, and can also appropriately relax the manufacturing process conditions of the optical coating, improve the yield rate of the optical device, and facilitate cost control of the optical device.

Description

Technical Field

[0001] The present application relates to an optical device, a detection method for an optical device, a laser radar and a movable device. Background Art

[0002] With the rapid development of laser ranging technology, laser radar has been widely used in various mobile devices such as drones and vehicles. For example, by equipping drones with laser radar to enhance their spatial detection capabilities, drones can be widely used in online cruising, ruins detection, agricultural production observation, industrial mapping and exploration, and assisted unmanned driving.

[0003] LiDAR is an optical instrument that uses lasers to measure distance. It usually actively emits lasers and uses the reflected light from the laser hitting the object to calculate the distance between the instrument and the object. Therefore, a large number of optical devices are usually required on the LiDAR, such as filters, reflectors, and windows.

[0004] In traditional technology, in order to realize the optical function of optical devices, optical coatings are usually provided on their surfaces. In the production process of optical devices, if the optical coatings have coating defects or are dirty, the optical devices are often judged as defective products, which is not conducive to the reasonable control of the production yield and production cost of planar optical parts. Summary of the invention

[0005] In order to solve or at least partially solve the above problems, the embodiments of the present application provide an optical device, a detection method for an optical device, a laser radar and a movable device.

[0006] In a first aspect, an embodiment of the present application provides an optical device, comprising: a device body and an optical coating disposed on the device body; a boundary of the optical coating is disposed around an optically effective area, and the optically effective area is used to envelop an outer contour of a light cross section; wherein the light cross section is a cross section formed by contact between the light and the optical coating.

[0007] Optionally, the area of ​​the optically effective region is greater than or equal to the area of ​​the light cross section.

[0008] Optionally, the shape of the optically effective area matches the shape of the light cross section.

[0009] Optionally, the shape of the optically effective area is a polygon.

[0010] Optionally, the light cross section includes a transmission cross section and a reflection cross section.

[0011] Optionally, when the light cross section is the transmission cross section, the corresponding optical effective area is the transmission effective area;

[0012] In the case where the light cross section is the reflection cross section, the corresponding optical effective area is the reflection effective area.

[0013] Optionally, the light cross section is the transmission cross section or the reflection cross section.

[0014] Optionally, the optical cross section is the transmission cross section and the reflection cross section;

[0015] The optical effective area includes the transmission effective area and the reflection effective area.

[0016] Optionally, the transmission cross section and the reflection cross section are independent of each other, and the transmission effective area and the reflection effective area are independent of each other.

[0017] Optionally, the transmission cross section partially overlaps with the reflection cross section to form an overlapping area, and the optically effective area corresponding to the overlapping area is the transmission effective area or the reflection effective area.

[0018] Optionally, in the transmission cross section and the reflection cross section, one light cross section envelops the other light cross section;

[0019] Then, in the transmission effective area and the reflection effective area, the optical effective area corresponding to another light cross section is nested in the optical effective area corresponding to one light cross section.

[0020] Optionally, the light includes static light and dynamic light;

[0021] In the case where the light is a static light, the light cross section is a cross section formed when the light is projected onto the optical coating;

[0022] In the case where the light is a dynamic light, the light cross section is a cross section formed by the motion trajectory of the light on the optical coating.

[0023] Optionally, the light comprises at least one of circular columnar light, square columnar light, circular cone-shaped light, square cone-shaped light, special-shaped light column and special-shaped light cone.

[0024] Optionally, the shape of the optically effective area corresponds to the shape and motion state of the light.

[0025] Optionally, when the light is a circular columnar light and is a static light, the optically effective area is an octagon.

[0026] Optionally, when the light is a circular columnar light and is a dynamic light, the optically effective area is a quadrilateral.

[0027] Optionally, when the light is a square columnar light and is a static light, the optically effective area is a quadrilateral.

[0028] Optionally, when the light is a square columnar light and is a dynamic light, the optically effective area is a quadrilateral.

[0029] Optionally, when the light is a circular cone-shaped light and is a static light, the optically effective area is an octagon.

[0030] Optionally, when the light is a square cone-shaped light and is a static light, the optically effective area is a quadrilateral.

[0031] Optionally, the propagation direction of the light is perpendicular to the optical coating or is arranged at a preset angle.

[0032] Optionally, an optically effective area contour line is provided on the optical coating, and the area within the contour line is the optically effective area.

[0033] Optionally, the optical device is at least one of a plane mirror, a convex lens or a concave lens.

[0034] Optionally, the optical device is at least one of a reflective device, a transmissive device and a window device.

[0035] In a second aspect, an embodiment of the present application further provides a method for detecting an optical device, comprising:

[0036] Obtaining quality information within an optically effective area of ​​an optical coating of an optical device;

[0037] Whether the optical device is qualified is determined according to the quality information.

[0038] In a third aspect, the embodiment of the present application further provides a laser radar, which includes: a laser, a detector and the above-mentioned optical device; wherein:

[0039] The laser is used to send incident laser light, and the detector is used to detect reflected laser light returned after the incident laser light is reflected by a target object;

[0040] The optical device is arranged on an optical path formed by the incident laser light and / or the reflected laser light.

[0041] In a fourth aspect, an embodiment of the present application further provides a movable device, the movable device comprising: a device body and the above-mentioned laser radar; wherein,

[0042] The laser radar is fixed on the device body.

[0043] In an embodiment of the present application, the boundary of the optical coating of the optical device can be set around the optical effective area, and the optical effective area can be used to envelop the outer contour of the light cross section. Since the light cross section of the light projected onto the optical device or emitted from the optical device and contacting the optical coating is located within the optical effective area, the function of the optical coating can be achieved when the quality of the coating corresponding to the optical effective area is qualified. In this way, during the manufacturing process of the optical device, when the quality of the optical coating on the device body is detected, only the quality of the coating corresponding to the optical effective area is detected. When the quality of the coating corresponding to the optical effective area is qualified, the quality of the optical coating can be considered to be qualified. In this way, on the one hand, it is possible to avoid quality inspection of the entire optical coating and reduce the workload of inspection. On the other hand, it is also possible to appropriately relax the manufacturing process conditions of the optical coating, improve the yield rate of the optical device, and facilitate the cost control of the optical device.

[0044] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 A schematic diagram of the lateral structure of an optical device according to an embodiment of the present application is shown;

[0047] Figure 2 A schematic diagram of the forward structure of an optical device according to an embodiment of the present application is shown;

[0048] Figure 3 One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0049] Figure 4 One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0050] Figure 5 One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0051] Figure 6One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0052] Figure 7 One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0053] Fig. 8A One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0054] Figure 8B One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0055] Fig. 9A One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0056] Fig. 9B One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0057] Fig.10 One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0058] Fig.11A One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0059] Fig. 11B One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0060] Fig. 12A One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0061] Fig. 12B One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0062] Fig.13 One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0063] Fig.14 One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0064] Fig.15 One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0065] Fig.16 One of the forward structural schematic diagrams of the optical device according to the embodiment of the present application is shown;

[0066] Fig.17 A flowchart showing a method for detecting an optical device according to an embodiment of the present application is shown;

[0067] Fig.18 A schematic diagram of the structure of a laser radar according to an embodiment of the present application is shown;

[0068] Fig.19 A schematic diagram of the structure of a movable device according to an embodiment of the present application is shown.

[0069] Description of reference numerals:

[0070] 10-device body, 11-optical coating, 20-laser, 21-detector, 22-optical device, 23-target, 100-equipment body, 200-lidar, A-light cross section, A1-transmission cross section, A2-reflection cross section, B-light, S-optical effective area, S1-transmission effective area, S2-reflection effective area. Specific embodiments

[0071] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0072] The embodiment of the present application provides an optical device, which may include but is not limited to any one of a reflective device, a transmissive device, and a window device. Specifically, the optical device may be a reflector, a reflector, a transmissive mirror, a light-transmitting sheet, a filter, or a window sheet, etc., which is not limited in the embodiment of the present application.

[0073] For example, in an optical instrument laser radar, the optical device may be a window, filter or reflector in the laser radar. Specifically, the window is usually located outside the device or product to protect the components inside the device or product. The filter is usually located near the laser emitting device and the laser receiving device to reduce the optical noise. The reflector can be flexibly placed anywhere inside the laser radar where the optical path passes, so as to reflect the light and realize the required optical path design.

[0074] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0075] Reference Figure 1 , showing a schematic diagram of the lateral structure of an optical device according to an embodiment of the present application, referring to Figure 2, shows a schematic diagram of the forward structure of an optical device according to an embodiment of the present application. Specifically, the optical device may include: a device body 10 and an optical coating 11 disposed on the device body 10; the boundary of the optical coating 11 is disposed around an optically effective area S, and the optically effective area S may be used to envelop the outer contour of a light cross section A; wherein the light cross section A is a cross section formed by the light B contacting the optical coating 11.

[0076] In practical applications, the type of the optical coating 11 of the optical device can be determined according to its function.

[0077] For example, when the optical device is a filter, in order to achieve the function of reducing optical noise, the optical coating 11 on its surface may be an anti-reflection film or a bandpass film; when the optical device is a reflector, in order to achieve the function of reflection, the optical coating 11 on its surface may be a reflective film. The specific content of the optical coating 11 is not limited in the embodiment of the present application.

[0078] Specifically, the light cross section A may be a cross section formed by the light projected onto the optical device and the contact between the optical coating 11 on its surface. In practical applications, the position of the optical device in a specific optical instrument is different, and the corresponding light cross section A is also different. The specific content of the light cross section A may not be limited in the embodiments of the present application.

[0079] In the embodiment of the present application, the boundary of the optical coating 11 can be set around the optical effective area S, and the optical effective area S can be used to envelop the outer contour of the light cross section A. Since the light cross section A in which the light projected onto the optical device or emitted from the optical device contacts the optical coating 11 is located within the optical effective area S, the function of the optical coating 11 can be realized when the quality of the coating corresponding to the optical effective area S is qualified. In this way, during the manufacturing process of the optical device, when the quality of the optical coating 11 on the device body 10 is detected, only the quality of the coating corresponding to the optical effective area S is detected. When the quality of the coating corresponding to the optical effective area S is qualified, the quality of the optical coating 11 can be considered to be qualified. In this way, on the one hand, it is possible to avoid quality inspection of the entire optical coating 11 and reduce the workload of inspection. On the other hand, it is also possible to appropriately relax the manufacturing process conditions of the optical coating 11, improve the yield rate of the optical device, and facilitate the cost control of the optical device.

[0080] For example, when the coating quality corresponding to the optically effective area S is qualified, and the coating outside the optically effective area S is defective or dirty, the optical coating 11 can still be used normally, and the optical device can also be judged as a good product. In this way, the yield rate of the optical device can be improved, which is beneficial to the cost control of the optical device.

[0081] In practical applications, the boundary of the optically effective area S can be formed on the outer surface, inner surface or inside the optical coating 11 by silk-screen printing or other processes during the processing of the optical coating 11. The embodiment of the present application does not limit the specific position of the optically effective area S on the optical coating 11.

[0082] In the embodiment of the present application, the area of ​​the optically effective region S is greater than or equal to the area of ​​the light cross section A, so that the optically effective region S can fully envelop the outer contour of the light cross section A.

[0083] Specifically, when the optical device is used for a laser radar, if the outgoing light or incident light of the laser radar comes into contact with the optical coating 11 on the surface of the optical device, its optically effective area S is usually larger than or at least equal to the cross-section of these light rays and all areas they have contacted, so that these areas in contact with the light rays can fall within the scope of the optically effective area S.

[0084] In an optional embodiment of the present application, the shape of the optically effective area S matches the shape of the light cross section A, so that the area of ​​the optically effective area S outside the light cross section A is smaller. In this way, the area of ​​the optically effective area S can be reduced, and then the inspection amount of the optical coating 11 during quality inspection can be reduced, and the yield rate of the optical device can be improved.

[0085] Specifically, the shape of the optically effective area S matches the shape of the light cross section A by: the shape of the optically effective area S is the same as the shape of the optical cross section A, or the shape of the optically effective area S is similar to the shape of the optical cross section A.

[0086] In an optional embodiment of the present application, the shape of the optically effective area S can be a polygon, so as to facilitate the formation of the optically effective area S and to facilitate the measurement of the boundary of the optically effective area when performing quality inspection on the coating corresponding to the optically effective area S.

[0087] In practical applications, when an optically effective area S is formed on the optical coating 11, a polygonal optically effective area S is easier to process than a circular, elliptical or irregularly shaped figure with curved edges. Moreover, compared with a circular, elliptical or irregularly shaped figure with curved edges, a polygonal optically effective area S is easier to determine and measure its boundaries. This makes it easier to detect the quality of the coating within the optically effective area S.

[0088] Specifically, the polygon may include but is not limited to a triangle, a quadrilateral, a hexagon, etc. The embodiment of the present application may not limit the specific type of the polygon.

[0089] In the embodiment of the present application, the light cross section A may include a transmission cross section and a reflection cross section. In practical applications, the specific type of the light cross section A is determined according to the contact mode between the light and the optical coating 11. If the light needs to pass through the optical coating 11, these light cross sections are called transmission cross sections; if the light needs to be reflected at the optical coating 11, these light cross sections are called reflection cross sections.

[0090] For example, for a window piece and a filter, the light cross section A is usually a transmission cross section, and for a reflective sheet, the light cross section A may be a plated reflection cross section.

[0091] In practical applications, for the same optical device, its light cross section A may be the transmission cross section or the reflection cross section, or may be a superposition, cross-combination or nesting of multiple transmission cross sections and multiple reflection cross sections.

[0092] In practical applications, when the light cross section A is the transmission cross section, the corresponding optical effective area S may be the transmission effective area; when the light cross section A is the reflection cross section, the corresponding optical effective area S may be the reflection effective area. That is, according to the type of the light cross section A on the optical device, the optical effective area S may be the transmission effective area or the reflection effective area, or may be a superposition, cross combination or nesting of the two effective areas.

[0093] like Figure 3 As shown, in the case where the light cross section A of the optical device only includes the transmission cross section A1, its optical effective area S can correspondingly be the transmission effective area S1.

[0094] like Figure 4 As shown, in the case where the optical cross section A of the optical device only includes the reflective cross section A2, its optical effective area S may correspondingly be the reflective effective area S2.

[0095] like Figure 5 As shown, when the optical section A of the optical device includes a transmission section A1 and a reflection section A2, and the transmission section A1 and the reflection section A2 are independent of each other, the optical effective area S of the optical device may correspondingly include a transmission effective area S1 and a reflection effective area S2, and the transmission effective area A1 and the reflection effective area A2 are independent of each other.

[0096] like Figure 6 As shown, in the case where the optical section A of the optical device includes a transmission section A1 and a reflection section A2, and the transmission section A1 and the reflection section A2 partially overlap to form an overlapping area A0, the optical effective area S of the optical device can correspondingly include a transmission effective area S1 and a reflection effective area S2, and the optical effective area corresponding to the overlapping area A0 can be set to the transmission effective area S1 and the reflection effective area S2 according to actual conditions.

[0097] In the embodiment of the present application, the optical section A of the optical device includes a transmission section A1 and a reflection section A2, and in the transmission section A1 and the reflection section A2, one light section envelops another light section; then, in the transmission effective area S1 and the reflection effective area S2, the optical effective area corresponding to the other light section is nested in the optical effective area corresponding to the one light section.

[0098] For example, Figure 7 As shown, in the case where the transmission cross section A1 envelops the reflection cross section A2, the reflection effective area S2 corresponding to the reflection cross section A2 is nested in the transmission effective area S1 corresponding to the transmission cross section A1.

[0099] The optical device according to claim 1, characterized in that the light comprises static light and dynamic light;

[0100] In the embodiment of the present application, when the light in contact with the optical coating 11 is a static light, that is, when the propagation direction of the light B is fixed, the light cross section A is the cross section formed by the light projected onto the optical coating 11 (e.g. Figure 1 As shown); in the case where the light in contact with the optical coating 11 is a dynamic light, the light cross section A is a cross section formed by the motion trajectory of the light on the optical coating 11.

[0101] For example, Figures 8A-8B As shown, when the light B projected onto the optical coating 11 is a dynamic light whose propagation direction is translated, the optical cross section A is the cross section formed by the motion trajectory of the light B on the optical coating 11 .

[0102] For example, Figures 9A-9B As shown, when the light B projected onto the optical coating 11 is a dynamic light whose propagation direction is translated, the optical cross section A is the cross section formed by the motion trajectory of the light B on the optical coating 11 .

[0103] Specifically, the light B may include at least one of a circular columnar light, a square columnar light, a circular cone light, a square cone light, a special-shaped light column, and a special-shaped light cone. The special-shaped light column may be a light column with an irregular cross-sectional shape, and the special-shaped light cone may be a light cone with an irregular cross-sectional shape.

[0104] In the embodiment of the present application, the shape of the optically effective area corresponds to the shape and motion state of the light.

[0105] For example, Figure 1 As shown, when the light B is a circular columnar light and is a static light, the propagation direction of the light B is fixed, and the shape of the optical effective area S is an octagon.

[0106] For example, Figures 8A-8B As shown in 9A-9B, when the light B is a circular cylindrical light and is a dynamic light, no matter whether the propagation direction of the light B is translated or deflected, the shape of the optical effective area S is a quadrilateral.

[0107] For example, Fig.10 As shown, the light B may be a square columnar light. When the light B is a square columnar light and is a static light, the propagation direction of the light B is fixed, and the shape of the optical effective area S may be a quadrilateral.

[0108] For example, Figures 11A-11B As shown, when the light B is a square columnar light and the light B is a dynamic light whose propagation direction is shifted, the shape of the optical effective area S is a quadrilateral.

[0109] For example, Figures 12A-12B As shown, when the light is a square columnar light and the light B is a dynamic light whose propagation direction is deflected, the shape of the optical effective area S is a quadrilateral.

[0110] For example, Fig.13 As shown, when the light B is a circular cone-shaped light and is a static light, that is, when the propagation direction of the light B is fixed, the shape of the optical effective area S can be an octagon.

[0111] For example, Fig.14 As shown, when the light B is a square cone-shaped light and is a static light, that is, when the propagation direction of the light B is fixed, the shape of the optical effective area S can be a quadrilateral.

[0112] It can be understood that in the embodiments of the present application, the shape of the light B may include but is not limited to any one of the above embodiments. Similarly, the optical effective area corresponding to each shape of the light B may not be limited to any one of the above embodiments.

[0113] In the embodiment of the present application, the propagation direction of the light ray B can be perpendicular to the optical coating 11 or set at a preset angle. Specifically, when the propagation direction of the light ray B is set at a preset angle to the optical coating 11, it can be considered that the propagation direction of the light ray B is inclined to the surface of the optical coating 11.

[0114] like Figure 2 , 8A In the optical devices shown in FIGS. 10 and 11A, the propagation direction of the light ray B may be perpendicular to the optical coating 11 .

[0115] Specifically, when the light B is a columnar light, the angle between the propagation direction of the light B and the optical coating 11 is different, and light cross sections A of different shapes will be obtained. Correspondingly, the shapes of the corresponding optical effective areas S are also different.

[0116] For example, Fig.15 As shown, when the light B is a cylindrical light and the propagation direction of the light B is inclined to the optical coating 11, the light cross section A can be an ellipse. When the diameter of the cylinder is D, and the angle between the surface of the optical coating 11 and the propagation direction of the light B is θ, the length of the minor axis of the ellipse is equal to the diameter D of the cylinder, and the major axis of the ellipse is equal to D / sin(θ).

[0117] For example, Fig.16 As shown, when the light B is a square columnar light and the propagation direction of the light B is inclined to the setting of the optical coating 11, the light cross section A can be a quadrilateral.

[0118] In addition, when the light B is a circular columnar light and the propagation direction of the light B is inclined to the optical coating 11, the light cross section A can be an ellipse; when the light B is a square cone light and the propagation direction of the light B is inclined to the optical coating 11, the light cross section A can be a quadrilateral.

[0119] In the embodiment of the present application, a contour line of an optically effective area S may be provided on the optical coating 11 , and the area within the contour line is the optically effective area S.

[0120] Specifically, during the processing of the optical coating 11, the contour line of the optically effective area S can be formed by silk screen printing, etching and other processes, and the area within the contour line is determined as the optically effective area. In this way, when the quality of the optical coating 11 is detected, it is easy to determine the range of the optically effective area S, thereby improving the quality detection accuracy of the optical coating 11.

[0121] Of course, the contour line of the optically effective area S may be a physical line or a virtual line, and the specific type of the contour line of the optically effective area S may not be limited in the present application.

[0122] In the embodiments of the present application, the optical device may be at least one of a plane mirror, a convex lens or a concave lens, and the present application may not limit the specific type of the optical device.

[0123] In summary, the optical device described in the embodiments of the present application may at least include the following advantages:

[0124] In an embodiment of the present application, the boundary of the optical coating can be set around the optical effective area, and the optical effective area can be used to envelop the outer contour of the light cross section. Since the light cross section of the light projected onto the optical device or emitted from the optical device and contacting the optical coating is located within the optical effective area, the function of the optical coating can be achieved when the quality of the coating corresponding to the optical effective area is qualified. In this way, during the manufacturing process of the optical device, when the quality of the optical coating on the device body is detected, only the quality of the coating corresponding to the optical effective area is detected. When the quality of the coating corresponding to the optical effective area is qualified, the quality of the optical coating can be considered to be qualified. In this way, on the one hand, it is possible to avoid quality inspection of the entire optical coating and reduce the workload of inspection. On the other hand, it is also possible to appropriately relax the manufacturing process conditions of the optical coating, improve the yield rate of the optical device, and facilitate cost control of the optical device.

[0125] The present application also provides a method for detecting an optical device, which is used to detect the quality of an optical coating on the surface of the optical device. The optical device may be the optical device described in the above embodiments.

[0126] Reference Fig.17 , shows a flow chart of the steps of a detection method of an optical device of the present application, such as Fig.17 As shown, the method may specifically include:

[0127] Step S11: obtaining quality information within an optically effective area of ​​an optical coating of an optical device.

[0128] In an embodiment of the present application, an optical coating may be provided on the surface of the optical device, and the boundary of the optical coating may be provided around an optically effective area, and the optically effective area may be used to envelop the outer contour of a light cross section. Since the light cross sections of the light projected onto or emitted from the optical device and in contact with the optical coating are all located within the optically effective area, the function of the optical coating can be achieved if the quality of the coating corresponding to the optically effective area is qualified. Therefore, in an embodiment of the present application, when the quality of the optical coating of the optical device is detected, only the quality of the coating corresponding to the optically effective area may be detected, thereby reducing the workload of the detection.

[0129] In this embodiment, the specific structure and application examples of the optical device can refer to the aforementioned embodiments and will not be elaborated here.

[0130] Step S12: judging whether the optical device is qualified according to the quality information.

[0131] In the embodiment of the present application, since the light cross-sections of the light projected onto the optical device or emitted from the optical device and in contact with the optical coating are all located within the optically effective area, the function of the optical coating can be achieved when the quality of the coating corresponding to the optically effective area is qualified. In this way, during the manufacturing process of the optical device, when the quality of the optical coating on the device body is detected, only the quality of the coating corresponding to the optically effective area is detected. When the quality of the coating corresponding to the optically effective area is qualified, the quality of the optical coating can be considered to be qualified. In this way, on the one hand, quality inspection of the entire optical coating can be avoided, reducing the workload of inspection. On the other hand, the manufacturing process conditions of the optical coating can be appropriately relaxed to improve the yield rate of the optical device, which is beneficial to the cost control of the optical device.

[0132] In summary, the optical device detection method described in the embodiment of the present application may specifically include the following advantages:

[0133] In an embodiment of the present application, the boundary of the optical coating can be set around the optical effective area, and the optical effective area can be used to envelop the outer contour of the light cross section. Since the light cross section of the light projected onto the optical device or emitted from the optical device and contacting the optical coating is located within the optical effective area, the function of the optical coating can be achieved when the quality of the coating corresponding to the optical effective area is qualified. In this way, during the manufacturing process of the optical device, when the quality of the optical coating on the device body is detected, only the quality of the coating corresponding to the optical effective area is detected. When the quality of the coating corresponding to the optical effective area is qualified, the quality of the optical coating can be considered to be qualified. In this way, on the one hand, it is possible to avoid quality inspection of the entire optical coating and reduce the workload of inspection. On the other hand, it is also possible to appropriately relax the manufacturing process conditions of the optical coating, improve the yield rate of the optical device, and facilitate cost control of the optical device.

[0134] The embodiment of the present application also provides a laser radar.

[0135] Reference Fig.18 , shows a schematic diagram of the structure of a laser radar of the present application, such as Fig.18 As shown, the laser radar 200 may include: a laser 20, a detector 21 and the above-mentioned optical device 22; wherein the laser 20 can be used to send an incident laser, and the detector 21 can be used to detect the reflected laser returned after the incident laser is reflected by the target object 23; the optical device 22 can be arranged on the optical path formed by the incident laser and / or the reflected laser.

[0136] It should be noted that the optical device 22 may be the optical device 22 described in the above embodiments, which will not be repeated here.

[0137] Specifically, after the incident laser emitted by the laser 20 is projected onto the target 23, it may be reflected on the target 23, returning the reflected laser. The detector 21 may be used to detect the reflected laser. The laser radar may also include an information processing system, which may be electrically connected to the laser 20 and the detector 21, respectively, and the information processing system may be used to obtain characteristic quantities such as the position and speed of the target 23 according to the incident laser and the reflected laser detected by the detector 21.

[0138] Optionally, the laser 20 may be at least one of a carbon dioxide laser, a neodymium-doped yttrium aluminum garnet laser, a semiconductor laser, a wavelength-tunable solid laser, and an optical beam expansion unit. The detector 21 may be at least one of a photomultiplier tube, a semiconductor photodiode, an avalanche photodiode, an infrared and visible light multi-element detector. The specific types of the laser 20 and the detector 21 may not be limited in the present application.

[0139] Specifically, in the laser radar, the optical device 22 can be arranged on the optical path formed by the incident laser and / or the reflected laser. For example, the optical device 22 can be any one of a window, a filter or a reflector in the laser radar. Specifically, the window is usually located on the outside of the device or product to protect the components inside the device or product. The filter is usually located near the laser emitting device and the laser receiving device to reduce the optical noise. The reflector can be flexibly placed anywhere inside the laser radar where the optical path passes, so as to reflect the light and realize the desired optical path design.

[0140] In an embodiment of the present application, the boundary of the optical coating of the optical device can be set around the optical effective area, and the optical effective area can be used to envelop the outer contour of the light cross section. Since the light cross section of the light projected onto the optical device or emitted from the optical device and contacting the optical coating is located within the optical effective area, the function of the optical coating can be achieved when the quality of the coating corresponding to the optical effective area is qualified. In this way, during the manufacturing process of the optical device, when the quality of the optical coating on the device body is detected, only the quality of the coating corresponding to the optical effective area is detected. When the quality of the coating corresponding to the optical effective area is qualified, the quality of the optical coating can be considered to be qualified. In this way, on the one hand, it is possible to avoid quality inspection of the entire optical coating and reduce the workload of inspection. On the other hand, it is also possible to appropriately relax the manufacturing process conditions of the optical coating, improve the yield rate of the optical device, and facilitate the cost control of the optical device.

[0141] The present application also provides a movable device, which may include but is not limited to devices that can undergo displacement changes, such as drones, vehicles, movable platforms, or movable furniture products (such as sweeping robots). The embodiments of the present application do not limit the specific content of the movable device.

[0142] Reference Fig.19 , shows a schematic diagram of the structure of a laser radar of the present application, such as Fig.19 As shown, the movable device includes: a device body 100 and the above-mentioned laser radar 200.

[0143] Specifically, the device body 100 may be a structural body of the movable device.

[0144] For example, when the movable device is a drone, the device body 100 may be the fuselage of the drone; and when the movable device is a vehicle, the device body may be the vehicle body.

[0145] In the embodiment of the present application, by mounting the laser radar 200 on the device body 100, characteristic quantities such as the position and speed of the target object can be obtained to detect the distance, direction, height, speed, posture, and even shape of the target object.

[0146] The laser radar 200 may include the optical devices of each of the above-mentioned embodiments. Specifically, the optical device may be any one of a window, a filter or a reflector in the laser radar. Specifically, the window is usually located outside the device or product to protect the components inside the device or product. The filter is usually located near the laser emitting device and the laser receiving device to reduce the optical noise. The reflector can be flexibly placed anywhere inside the laser radar where the optical path passes, so as to reflect the light and realize the desired optical path design.

[0147] In an embodiment of the present application, the boundary of the optical coating of the optical device can be set around the optical effective area, and the optical effective area can be used to envelop the outer contour of the light cross section. Since the light cross section of the light projected onto the optical device or emitted from the optical device and contacting the optical coating is located within the optical effective area, the function of the optical coating can be achieved when the quality of the coating corresponding to the optical effective area is qualified. In this way, during the manufacturing process of the optical device, when the quality of the optical coating on the device body is detected, only the quality of the coating corresponding to the optical effective area is detected. When the quality of the coating corresponding to the optical effective area is qualified, the quality of the optical coating can be considered to be qualified. In this way, on the one hand, it is possible to avoid quality inspection of the entire optical coating and reduce the workload of inspection. On the other hand, it is also possible to appropriately relax the manufacturing process conditions of the optical coating, improve the yield rate of the optical device, and facilitate the cost control of the optical device.

[0148] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0149] The term "one embodiment", "embodiment" or "one or more embodiments" herein means that a particular feature, structure or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present application. In addition, please note that the examples of the term "in one embodiment" here do not necessarily all refer to the same embodiment.

[0150] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0151] In the claims, any reference signs placed between brackets shall not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present application may be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names.

[0152] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An optical device, characterized in that: The optical device comprises: a device body and an optical coating arranged on the device body; the boundary of the optical coating is arranged around an optically effective area, and the optically effective area is used to envelop the outer contour of a light cross section; wherein the light cross section is a cross section formed by the contact between the light and the optical coating; the optically effective area is also used in the manufacturing process of the optical device, and if it is detected that the coating quality corresponding to the optically effective area is qualified, then the optical device is confirmed to be qualified.

2. The optical device according to claim 1, characterized in that The area of ​​the optically effective region is greater than or equal to the area of ​​the light cross section.

3. The optical device according to claim 1, characterized in that: The shape of the optically effective area matches the shape of the light cross section.

4. The optical device according to claim 1, characterized in that The shape of the optically effective area is a polygon.

5. The optical device according to claim 1, characterized in that: The light cross section includes a transmission cross section and a reflection cross section.

6. The optical device according to claim 5, characterized in that: In the case where the light cross section is the transmission cross section, the corresponding optical effective area is the transmission effective area; In the case where the light cross section is the reflection cross section, the corresponding optical effective area is the reflection effective area.

7. The optical device according to claim 6, characterized in that: The light cross section is the transmission cross section or the reflection cross section.

8. The optical device according to claim 6, characterized in that: The light cross section is the transmission cross section and the reflection cross section; The optical effective area includes the transmission effective area and the reflection effective area.

9. The optical device according to claim 8, characterized in that: The transmission cross section and the reflection cross section are independent of each other, and the transmission effective area and the reflection effective area are independent of each other.

10. The optical device according to claim 8, characterized in that The transmission cross section partially overlaps with the reflection cross section to form an overlapping area, and the optically effective area corresponding to the overlapping area is the transmission effective area or the reflection effective area.

11. The optical device according to claim 8, characterized in that: Among the transmission cross section and the reflection cross section, one light cross section envelops the other light cross section; Then, in the transmission effective area and the reflection effective area, the optical effective area corresponding to another light cross section is nested in the optical effective area corresponding to one light cross section.

12. The optical device according to claim 1, characterized in that: The light includes static light and dynamic light; In the case where the light is a static light, the light cross section is a cross section formed when the light is projected onto the optical coating; In the case where the light is a dynamic light, the light cross section is a cross section formed by the motion trajectory of the light on the optical coating.

13. The optical device according to claim 1, characterized in that: The light comprises at least one of circular columnar light, square columnar light, circular cone light, square cone light, special-shaped light column and special-shaped light cone.

14. The optical device according to claim 1, characterized in that The shape of the optically effective area corresponds to the shape and motion state of the light.

15. The optical device according to claim 14, characterized in that: When the light is a circular columnar light and is a static light, the optically effective area is an octagon.

16. The optical device according to claim 14, characterized in that: When the light is a circular columnar light and is a dynamic light, the optical effective area is a quadrilateral.

17. The optical device according to claim 14, characterized in that: When the light is a square column light and is a static light, the optical effective area is a quadrilateral.

18. The optical device according to claim 14, characterized in that: When the light is a square columnar light and is a dynamic light, the optical effective area is a quadrilateral.

19. The optical device according to claim 14, characterized in that: When the light is a circular cone-shaped light and is a static light, the optically effective area is an octagon.

20. The optical device according to claim 14, characterized in that When the light is a square cone-shaped light and is a static light, the optical effective area is a quadrilateral.

21. The optical device according to claim 1, characterized in that The propagation direction of the light is perpendicular to the optical coating or is arranged at a preset angle.

22. The optical device according to claim 1, characterized in that An optically effective area contour line is provided on the optical coating, and the area within the contour line is the optically effective area.

23. The optical device according to claim 1, characterized in that The optical device is at least one of a plane mirror, a convex lens or a concave lens.

24. The optical device according to claim 1, characterized in that The optical device is at least one of a reflective device, a transmissive device and a window device.

25. A method for detecting an optical device, characterized in that: include: Obtaining quality information within an optically effective area of ​​an optical coating of an optical device; Whether the optical device is qualified is determined according to the quality information.

26. A laser radar, characterized in that: The laser radar comprises: a laser, a detector and an optical device according to any one of claims 1 to 24; wherein, The laser is used to send incident laser light, and the detector is used to detect reflected laser light returned by the incident laser light after being reflected by the target object; The optical device is arranged on an optical path formed by the incident laser light and / or the reflected laser light.

27. A movable device, characterized in that: The movable device comprises: a device body and the laser radar according to claim 26; wherein, The laser radar is fixed on the device body.

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