Lighting system

Abstract

A lighting system, in which a photographing outer cover (2) is provided on the upper side of a conveying device, a support (3) for placement of a bottle (4) being provided inside the photographing outer cover (2). Inside the photographing outer cover (2), a camera is provided above the support (3), and photographing light sources (1) are provided at two sides of the camera (5). Inside the photographing outer cover (2), mirror baffles (6) are provided at positions between the camera (5) and the photographing light sources (1) for limiting and blocking the reflection of edge light rays at the sides of the photographing light sources (1) close to the camera (5) illuminating the body of the bottle (4) towards two sides of the camera (5), so that the light rays of the photographing light sources (1) on the boundary of the body of the bottle (4) cannot be collected by the camera (5).

Description

A lighting system Technical Field

[0001] The utility model relates to the technical field of lighting equipment, in particular to a lighting system. Background Art

[0002] An increasing number of beverage bottle recycling machines on the market now use artificial intelligence combined with machine vision to identify bottle type and size. This approach often requires a clear background and optimal lighting to avoid light, shadows, and highlights that can interfere with recognition. Conventional single-light configurations cast shadows on bottles, which can affect the determination of their actual size. Furthermore, conventional light source configurations can easily create specular reflections on the bottles, hindering the identification of actual features.

[0003] Utility Model Content

[0004] In order to solve the above problems, the purpose of the present invention is to provide a lighting system, which is equipped with two sets of shooting light sources and a mirror baffle, so that the shadow cast on the bracket by the light irradiated by the shooting light source on the bottle cannot be captured by the camera, and the light irradiated on the bottle cannot be directly reflected to the camera.

[0005] The utility model is implemented by the following method: a lighting system, wherein a shooting cover is provided on the upper side of the conveying device, and a bracket is provided inside the shooting cover for placing bottles; a camera is provided inside the shooting cover above the bracket, and shooting light sources are provided on both sides of the camera inside the shooting cover; a mirror baffle is provided inside the shooting cover between the camera and the shooting light source, which is used to limit and block the edge of the light of the shooting light source close to the camera from irradiating the bottle and reflecting to both sides of the camera, so that the shadow generated by the shooting light source irradiating the edge of the bottle body on the bracket cannot be captured by the camera.

[0006] Preferably, two groups of shooting light sources are symmetrically arranged on both sides of the camera, the distance between the two groups of shooting light sources is L4, the diameter of the bottle is D, and L4>D.

[0007] Preferably, the two mirror baffles are symmetrically arranged along the axis of the camera, and the angle between the mirror baffle and the vertical direction is a, a=3°-10°.

[0008] Preferably, the width of the shadow produced by the projection of the boundary line of the bottle body on the bracket after the light from the two groups of shooting light sources is reflected by the corresponding mirror baffle is L2, the width of the boundary line of the bottle seen by the camera projected on the bracket is L3, and the width of the shadow produced by the projection of the boundary line of the bottle body on the bracket by the two groups of shooting light sources is L1, L2 <L3,L1<L3。

[0009] Preferably, the surfaces of the two side walls inside the shooting cover are covered with a diffuse reflection layer.

[0010] Preferably, the support is a conveyor belt, and the center line of the conveyor belt and the axis of the camera are in the same vertical plane.

[0011] Preferably, the conveyor belt is V-shaped.

[0012] The present invention provides a lighting system that, compared to existing technologies, has at least the following technical advantages: 1. Two sets of shooting light sources are provided, and a mirror baffle is provided to narrow the illumination range of the shooting light source on the side of the camera, thereby causing the illumination to be reflected toward the sides of the camera. This prevents the light irradiating the bottle from being directly reflected by the camera, thus preventing it from affecting the recognition of the actual features on the bottle. The two sets of shooting light sources are arranged on either side of the camera, so that the projection of the bottle boundary illuminated by the two sets of shooting light sources on the bracket is smaller than the projection of the bottle boundary on the bracket by the camera. This prevents the shadow cast by the light irradiating the bottle on the bracket from being captured by the camera, thus preventing the shadow from affecting the determination of the actual size of the bottle. 2. The spacing between the two sets of light sources is set to be greater than the diameter of the bottle, so that the projection of the bottle boundary illuminated by the shooting light on the bracket is within the edge of the vertical projection of the bottle, thereby better preventing the camera from capturing the bottle's shadow. 3. The bracket is configured as a conveyor belt, which can improve production efficiency. The V-shaped conveyor belt can achieve automatic alignment of the bottles, helping the camera to accurately capture the actual features of each bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG1 is a schematic structural diagram of a lighting system of the present invention.

[0014] FIG2 is a schematic structural diagram of a lighting system of the present invention from a first viewing angle.

[0015] FIG3 is a schematic structural diagram of a lighting system of the present invention from a second viewing angle.

[0016] FIG4 is a schematic diagram of a shooting light source illumination system of the present invention.

[0017] FIG5 is a schematic diagram of a virtual light source of an illumination system of the present invention illuminating the boundary of a bottle.

[0018] FIG6 is a schematic diagram of a camera of a lighting system of the present invention photographing the boundary of a bottle.

[0019] Description of the accompanying figures: 1-shooting light source, 11-diffuse reflection layer, 2-shooting cover, 3-bracket, 4-bottle, 5-camera, 6-mirror baffle, 7-virtual light source, 8-reflected light, 9-inner light source boundary line, 10-virtual light source illumination boundary. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] Please refer to Figures 1 to 6, which illustrate a lighting system. A shooting cover 2 is provided on the upper side of the conveying device, and a bracket 3 is provided inside the shooting cover 2 for placing a bottle 4. A camera 5 is provided above the bracket 3 inside the shooting cover 2, and shooting light sources 1 are provided on both sides of the camera 5 inside the shooting cover 2. A mirror baffle 6 is provided inside the shooting cover 2 between the camera 5 and the shooting light source 1, which is used to limit and block the edge of the light from the shooting light source 1 on the side close to the camera 5 from irradiating the bottle 4 and reflecting to both sides of the camera 5, so that the shadow cast by the shooting light source 1 on the edge of the bottle 4 on the bracket 3 cannot be captured by the camera 5. Two sets of shooting light sources 1 are provided, along with a mirror baffle 6, to narrow the illumination range of the shooting light source 1 on the side of the camera 5, thereby directing the reflection angle of the bottle 4 toward the sides of the camera 5. This prevents the reflected light 8 formed by the inner light source boundary line 9 of the shooting light source 1, which is blocked by the mirror baffle 6, from directly reflecting onto the bottle 4. This prevents the reflected light 8 from affecting the recognition of the actual features on the bottle 4. The two sets of shooting light sources 1 are provided on either side of the camera 5, so that the projection of the boundaries of the bottle 4 illuminated by the two sets of shooting light sources 1 on the bracket 3 is smaller than the projection of the boundaries of the bottle 4 on the bracket 3 recognized by the camera 5. This prevents the shadow cast on the bracket 3 by the light from the shooting light source 1 on the bottle 4 from being captured by the camera 5, thereby preventing the shadow from affecting the judgment of the actual size of the bottle 4. A preferred shooting light source can be a light bar, light strip, or other lighting device, but is not limited thereto.

[0022] Referring to Figures 1 to 6 , preferably, two sets of shooting light sources 1 are symmetrically positioned on either side of the camera 5. The distance between the two sets of shooting light sources 1 is L4, and the diameter of the bottle 4 is D, where L4 > D. Setting the distance between the two sets of light sources to be greater than the diameter of the bottle 4 ensures that the projection of the edge of the bottle 4 illuminated by the shooting light on the bracket 3 is within the edge of the vertical projection of the bottle 4. This prevents the camera 5 located directly above the bottle 4 from passing through the edge of the bottle 4 and capturing the shadow cast by the shooting light source 1 below the bottle 4.

[0023] Please refer to FIGS. 1 to 6. Preferably, the shadow width L2 (as shown in FIG. 5) is generated on the bracket 3 by the projection of the boundary line of the bottle body of the bottle 4 irradiated by the light rays of the two groups of the shooting light sources 1 reflected by the corresponding mirror baffles 6. The width L3 (as shown in FIG. 6) of the boundary line of the bottle 4 projected onto the bracket 3 is seen by the camera 5. The shadow width L1 (as shown in FIG. 4) generated on the bracket 3 by the two groups of the shooting light sources 1 irradiating the boundary of the bottle body of the bottle 4. L2 < L3 and L1 < L3. Preferably, the two mirror baffles 6 are symmetrically arranged along the axis of the camera 5. The included angle between the mirror baffle 6 and the vertical direction is a (as shown in FIG. 4), and a = 3° - 10°. The light rays of the shooting light source 1 reflected by the mirror baffle 6 and irradiated on the bottle 4 will be reflected by the corresponding mirror baffle 6 in advance before being reflected to the camera 5. Under the action of the mirror baffle 6, a virtual light source 7 that is a mirror image of the real shooting light source 1 is formed. And the shadow width L2 generated on the bracket 3 by the virtual light source irradiation boundary 10 of the two side virtual light sources 7 irradiating the boundary of the bottle 4 is less than the width L3 of the boundary line of the bottle 4 projected onto the bracket 3 seen by the camera 5, which can ensure that the camera 5 does not collect the shadow of the bottle 4 on the bracket 3 and can avoid the shadow from affecting the judgment of the actual size of the bottle 4. a is controlled within a reasonable range so that the light rays of the virtual light source 7 can irradiate on the bottle to generate a shadow that will not be collected by the camera, or will not irradiate on the bottle. The length L5 of the mirror baffle is controlled within a reasonable range to ensure that it can not only reduce the irradiation range of the shooting light source 1 on the side close to the camera, avoid the light rays from being directly reflected to the camera 5, but also take into account the irradiation of the bottle 4 and avoid blocking the path for the camera 5 to collect the bottle boundary. By increasing the length L5 of the mirror baffle 6, the function of restricting the shooting light source 1 from irradiating the middle point on the upper part of the surface of the bottle 4 can be achieved. On the contrary, the shooting light source 1 can be made to irradiate a more central position on the surface of the bottle 4. By reducing the installation angle a of the mirror baffle 6, the shooting light source 1 can be made to irradiate a position on the surface of the bottle 4 that is farther from the middle. On the contrary, the shooting light source 1 can be made to irradiate a position on the surface of the bottle 4 that is closer to the middle. By reducing the distance L6 between the center of the shooting light source 1 and the mirror baffle 6, the shooting light source 1 can be made to irradiate a position on the surface of the bottle 4 that is farther from the middle. On the contrary, the shooting light source 1 can be made to irradiate a position on the surface of the bottle 4 that is closer to the middle. By any of the above methods, the reflected light rays 8 of the shooting light source 1 irradiated on the surface of the bottle 4 can be prevented from being directly reflected to the camera 5. As long as the intersection point B of the light source boundary lines of the shooting light sources 1 on both sides of the camera 5 after being blocked by the mirror baffle 6 and the central axis of the camera 5 is below the axis C of the bottle, it can be ensured that the reflected light rays 8 irradiated on the bottle 4 will not be directly reflected to the camera 5.

[0024] Please refer to Figures 1 to 6. Preferably, the surfaces of the two side walls inside the shooting cover 2 are covered with a diffuse reflection layer 11, which helps to improve the brightness inside the shooting cover 2 and does not produce a shadow on the bottle 4 on the bracket 3 that can be captured by the camera 5.

[0025] Referring to Figures 1 to 6 , the support 3 is preferably a conveyor belt, with the centerline of the conveyor belt and the axis of the camera 5 coexisting in the same vertical plane. The conveyor belt is V-shaped. Using the support 3 as a conveyor belt can improve the efficiency of identifying multiple bottles 4. Furthermore, the V-shaped conveyor belt allows for automatic alignment of the bottles 4, helping the camera 5 accurately capture the actual features of each bottle 4. The support 3 can also be other components that can provide support and positioning.

[0026] The utility model has the following working principle:

[0027] Two groups of shooting light sources 1 are set up, and the two groups of shooting light sources 1 are set on both sides of the camera 5, so that the projection of the boundary of the bottle 4 illuminated by the two groups of shooting light sources 1 on the bracket 3 is smaller than the projection of the boundary of the bottle 4 recognized by the camera 5 on the conveyor belt (that is, the shadow generated by the shooting light source 1 illuminating the bottle 4 is within the projection of the boundary of the bottle 4 recognized by the camera 5), ​​so that the shadow generated by the light irradiated by the shooting light source 1 on the bottle 4 on the conveyor belt cannot be captured by the camera 5. The lighting system makes the shadow of the bottle 4 hidden relative to the camera 5 to achieve a shadowless effect, which can achieve the purpose of preventing the shadow from affecting the camera 5 in judging the actual size of the bottle 4.

[0028] A mirror baffle 6 is provided to narrow the illumination range of the shooting light source 1 on the side close to the camera 5, so that the reflection angle of the bottle 4 is toward the sides of the camera 5, so that the reflected light formed by the inner light source boundary line 9 of the shooting light source 1 after being blocked by the mirror baffle 6 and irradiating the bottle 4 cannot be directly reflected to the camera 5, and the shooting light source 1 will only produce a shadow below the bottle 4 on the same side as the shooting light source 1 (no shadow will be produced on the other side of the bottle 4 due to being blocked by the mirror baffle 6), which can avoid affecting the recognition of actual features on the bottle 4.

[0029] Several points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which can be mechanical connection or electrical connection, or internal communication between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change.

[0030] Secondly: The drawings of the disclosed embodiments of the present invention only involve structures related to the disclosed embodiments. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0031] Finally, the above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention fall within the protection scope of the present invention.

[0032] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications without departing from the principle of the present invention should also be regarded as within the scope of protection of the present invention.

Claims

1. A lighting system, characterized in that: A shooting cover is provided on the upper side of the conveying device, and a bracket is provided inside the shooting cover for placing bottles; a camera is provided inside the shooting cover above the bracket, and shooting light sources are provided inside the shooting cover on both sides of the camera; a mirror baffle is provided inside the shooting cover between the camera and the shooting light source, which is used to limit and block the edge of the light of the shooting light source close to the camera from irradiating the bottle and reflecting to both sides of the camera, so that the shadow generated by the shooting light source irradiating the boundary of the bottle body on the bracket cannot be captured by the camera.

2. A lighting system according to claim 1, characterized in that: Two groups of shooting light sources are symmetrically arranged on both sides of the camera, the distance between the two groups of shooting light sources is L4, the diameter of the bottle is D, and L4>D.

3. A lighting system according to claim 1, characterized in that: The two mirror baffles are symmetrically arranged along the axis of the camera, and the angle between the mirror baffles and the vertical direction is a, a=3°-10°.

4. A lighting system according to claim 1, characterized in that: The width of the shadow produced by the projection of the boundary line of the bottle body by the two sets of shooting light sources after being reflected by the corresponding mirror baffles is L2, the width of the boundary line of the bottle projected on the bracket by the camera is L3, and the width of the shadow produced by the projection of the boundary line of the bottle body on the bracket by the two sets of shooting light sources is L1, L2 <L3,L1<L3。 5. The lighting system according to claim 1, characterized in that: The surfaces of the two side walls inside the shooting cover are covered with a diffuse reflection layer.

6. A lighting system according to claim 1, characterized in that: The support is a conveyor belt, and the center line of the conveyor belt and the axis of the camera are in the same vertical plane.

7. A lighting system according to claim 6, characterized in that: The conveyor belt is V-shaped.

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