Light supplementing assembly and camera

By designing a fill light component for an intelligent traffic monitoring system, the refraction part deflection light increases the light utilization rate, and the light source body is hidden by total reflection, the problems of low light utilization rate and glare in the prior art are solved.

CN222506725UActive Publication Date: 2025-02-18ZHEJIANG UNIVIEW TECH CO LTD
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Patent Information

Application Number
CN202420369241.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-02-27
Publication Date
2025-02-18
Estimated Expiration
2034-02-27

AI Technical Summary

Technical Problem

In the existing intelligent traffic monitoring system, when the fill light component on the camera provides auxiliary light, the light utilization rate is low, and some light passes through the window and causes glare problems.

Method used

Design a fill light component, including a fill light body and a light source body. By setting the incident surface, exit surface and reflection surface, the light ray is derefractive through the refractive part, improving the light utilization rate, and hiding the light source body through total reflection to avoid direct emission. Glare.

Benefits of technology

Improve the utilization rate of fill light, avoid light waste, prevent some light from entering the car through the window, causing glare problems, and hide the light source body to avoid direct glare.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of video monitoring equipment, and provides a light supplementing assembly and a camera, the light supplementing assembly comprises a light supplementing body and a light source body, the light supplementing body is provided with an incident plane, an emergent plane and a reflecting plane which are adjacently arranged, the incident plane is perpendicular to the emergent plane, and a plurality of refraction parts are arranged on the emergent plane in an array mode; the light source body is arranged on one side of the light supplementing body, and light emitted by the light source body is suitable for penetrating through the incident surface and refracted out from the refraction part of the emergent surface after being totally reflected by the reflecting surface. When the light supplementing assembly provided by the utility model is applied to the intelligent snapshot unit, auxiliary light can be provided for snapshot in a low-illumination environment so as to output a high-quality image; and when the light supplementing assembly provides auxiliary light for snapshot, the light can be deflected to an area needing to be irradiated as much as possible, so that the utilization rate of the light supplementing light is improved, waste of the light supplementing light is avoided, and the problem of glare caused by the fact that part of the light enters the vehicle through the vehicle window can be prevented.
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Description

Technical Field

[0001] The utility model relates to the technical field of video monitoring equipment, in particular to a fill light component and a camera. Background Art

[0002] With the rapid development of social economy, the living standards of urban residents are constantly improving, and motor vehicles have become an indispensable means of transportation for people to travel. How to effectively manage motor vehicles is a relatively important issue. To this end, the intelligent traffic monitoring system effectively solves this problem.

[0003] The intelligent traffic monitoring system transmits on-site images within the monitoring area back to the command center through the monitoring system, allowing managers to directly grasp traffic conditions such as vehicle queues, congestion, and traffic lights, and promptly adjust signal timing or use other means to divert traffic and change the distribution of traffic flow to achieve the purpose of alleviating traffic congestion.

[0004] In the related technology, in the intelligent traffic monitoring system, the intelligent capture unit (such as a camera) can output high-quality images in a low-light environment (city street lights), thanks to the fill light component, which can provide auxiliary light when the camera captures the image to obtain a suitable snapshot. However, the fill light component on the current camera generally emits at all angles, and only part of the light can be effectively used to illuminate the license plate, and the rest of the light can easily pass through the car window into the human eye to cause glare problems. Utility Model Content

[0005] The first aspect of the utility model provides a fill light component to solve at least one of the above-mentioned technical defects in the prior art. The fill light component can improve the utilization rate of the fill light, avoid the waste of the fill light, and further prevent part of the light from passing through the window into the car to cause glare problems.

[0006] A second aspect of the utility model provides a camera.

[0007] The first aspect of the utility model provides a fill light assembly, comprising:

[0008] The fill light body has an incident surface, an exit surface and a reflective surface which are adjacently arranged, the incident surface is arranged perpendicular to the exit surface, and a plurality of refractive parts are arranged in an array on the exit surface;

[0009] The light source body is arranged at one side of the fill light body. The light emitted by the light source body is suitable for passing through the incident surface and being totally reflected by the reflective surface before being refracted out from the refraction part of the exit surface.

[0010] According to the fill light assembly provided by the utility model, the refraction part has a right-angle surface and a refraction inclined surface which are adjacently arranged, and the light emitted from the emission surface is deflected and refracted by the refraction inclined surface.

[0011] According to the fill light assembly provided by the utility model, the angle between the refractive inclined surface and the emergent surface is α, and the incident angle of the incident light incident on the refractive inclined surface after total reflection by the reflective surface is γ, wherein α is equal to γ.

[0012] According to the fill light assembly provided by the utility model, the angle between the incident surface and the reflective surface is ∠B, the incident angle of the incident light incident on the reflective surface is ∠C, wherein ∠B is greater than or equal to ∠C.

[0013] According to the fill light assembly provided by the utility model, the light emitted by the light source body is vertically incident on the incident surface.

[0014] According to the fill light assembly provided by the utility model, the periphery of the emitting surface extends outward to form corresponding stopper portions.

[0015] According to the fill light assembly provided by the utility model, the shape of the emission surface is adapted to the shape of the photographed object.

[0016] According to the fill light assembly provided by the utility model, the fill light body is composed of three plane lenses, and the three plane lenses are connected end to end in sequence, wherein the first plane lens forms the incident surface, the second plane lens forms the exit surface, and the third plane lens is coated with a reflective layer to form the reflection surface.

[0017] A second aspect of the utility model provides a camera, comprising a camera body and the fill light assembly, wherein the fill light assembly is arranged on the camera body and is used to provide supplementary light when the camera body is shooting.

[0018] According to the camera provided by the utility model, the camera body includes a shell and a mounting panel, and the mounting panel is provided with a video acquisition component;

[0019] The fill light component is embedded in the installation panel and is located on at least one side of the video acquisition component, and is used to provide supplementary light when the video acquisition component is shooting.

[0020] The fill light assembly provided by the utility model is provided with a fill light body and a light source body, and the fill light body has an incident surface, an exit surface and a reflective surface arranged adjacent to each other, wherein the incident surface and the exit surface are perpendicular to each other; the light source body is arranged on one side of the incident surface, and the light emitted by the light source body is suitable for passing through the incident surface, and after being totally reflected by the reflective surface, it is deflected and refracted from the refractive part of the exit surface. When the fill light assembly provided by the embodiment of the utility model is applied to an intelligent capture unit (such as a camera), it can not only provide auxiliary light for camera capture in a low-light environment (city street lights) to output high-quality images; and when the fill light assembly provides auxiliary light for camera capture, it can deflect as much light as possible to the area that needs to be illuminated (such as the position of the vehicle license plate), so as to improve the utilization rate of the fill light, avoid the waste of the fill light, and further prevent part of the light from passing through the window into the car to cause glare problems.

[0021] In addition, since the light source body of the present invention indirectly emits light through the fill light body instead of the light source body directly emitting light for fill light, the purpose of hiding the light source body can be achieved to avoid glare problems caused by direct light from the light source body.

[0022] The camera provided by the utility model has all the above advantages because it includes the above fill light component. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the structure and optical path of the fill light assembly provided by the embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the optical path of the refraction part in the fill light assembly provided by the embodiment of the utility model;

[0026] Figure 3 It is a structural schematic diagram of a fill light assembly provided by an embodiment of the utility model;

[0027] Figure 4 It is a structural schematic diagram of a camera provided by an embodiment of the utility model;

[0028] Figure 5 It is a partial structural schematic diagram of a camera provided by an embodiment of the utility model;

[0029] Figure 6It is a partial structural cross-sectional view of a camera provided by an embodiment of the utility model;

[0030] Figure 7 This is one of the effect diagrams of the fill light assembly provided by the embodiment of the utility model;

[0031] FIG8 is a comparison diagram of the effects of the fill light assembly provided by the embodiment of the utility model, wherein (a) is a second schematic diagram of the effects of the fill light assembly provided by the embodiment of the utility model; and (b) is a schematic diagram of the effects of the existing fill light assembly.

[0032] Reference numerals:

[0033] 100, fill light body; 110, incident surface; 120, exit surface; 121, refraction part; 1211, right-angle surface; 1212, refraction inclined surface; 122, stopper; 130, reflection surface;

[0034] 200. Light source body;

[0035] 300, camera; 310, housing; 320, mounting panel; 321, video acquisition component;

[0036] 400. Vehicle. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0039] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or 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" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0041] Figure 1 It is a schematic diagram of the structure and optical path of the fill light assembly provided by the embodiment of the utility model; Figure 2 This is a schematic diagram of the optical path of the refraction part in the fill light assembly provided by the embodiment of the utility model; Figure 3 It is a structural schematic diagram of a fill light assembly provided in an embodiment of the utility model.

[0042] See also Figures 1 to 3 An embodiment of the utility model provides a fill light assembly, which includes a fill light body 100 and a light source body 200 .

[0043] The fill light body 100 can be a right triangular prism made of glass, with equal heights of the side faces, a triangular bottom face, parallel and congruent upper and lower faces, and all side edges equal and parallel to each other and perpendicular to the two bottom faces. The fill light body 100 has three adjacent faces, namely, an incident face 110, an exit face 120, and a reflective face 130, wherein the incident face 110 and the exit face 120 are perpendicular to each other, that is, the cross-sectional shape of the fill light body 100 is a right triangle, and a plurality of refractive parts 121 are arrayed on the exit face 120, and the plurality of refractive parts 121 are sequentially arranged along the height direction of the exit face 120, so that all light emitted from the exit face 120 can be deflected.

[0044] The light source body 200 is disposed on one side of the fill light body 100, and the light emitted by the light source body 200 is suitable for passing through the incident surface 110, and after being totally reflected by the reflective surface 130, it is deflected and refracted from the refraction part 121 of the exit surface 120. When the fill light assembly provided by the embodiment of the utility model is applied to an intelligent capture unit (such as a camera), it can not only provide auxiliary light for the camera to capture in a low-light environment (city street lights) to output high-quality images; but also when the fill light assembly provides auxiliary light for the camera to capture, it can deflect as much light as possible to the area that needs to be illuminated (such as the position of the license plate of the vehicle 400), so as to improve the utilization rate of the fill light, avoid the waste of the fill light, and further prevent part of the light from passing through the window into the car to cause glare problems.

[0045] It can be understood that the fill light assembly provided by the embodiment of the utility model is configured by setting a fill light body 100 and a light source body 200, and making the fill light body 100 have an incident surface 110, an exit surface 120 and a reflecting surface 130 adjacent to each other, wherein the incident surface 110 and the exit surface 120 are perpendicular to each other; the light source body 200 is disposed on one side of the incident surface 110, and the light emitted by the light source body 200 is suitable for passing through the incident surface 110, and after being totally reflected by the reflecting surface 130, it is refracted from the refractive portion 121 of the exit surface 120. When the fill light component provided by the embodiment of the utility model is applied to an intelligent capture unit (such as a camera), it can not only provide auxiliary light for the camera to capture in a low-light environment (city street lights) to output high-quality images; but also when providing auxiliary light for the camera to capture, the fill light component can deflect as much light as possible to the area that needs to be illuminated (such as the position of the vehicle's license plate 400) to improve the utilization rate of the fill light, avoid wasting the fill light, and further prevent part of the light from passing through the window into the car to cause glare problems.

[0046] In addition, since the light source body 200 of the present invention indirectly emits light through the fill light body 100 instead of the light source body 200 directly emitting light for fill light, the purpose of hiding the light source body 200 can be achieved to avoid glare caused by direct light from the light source body 200.

[0047] Continue reading Figure 2 In some embodiments of the present invention, the refractive portion 121 may be a grating structure engraved on the exit surface 120 , which can deflect all light emitted from the exit surface 120 .

[0048] The refractive part 121 may be a right triangular prism of a solid structure, that is, the cross-sectional shape of the refractive part 121 is a right triangle. The refractive part 121 has a right-angled surface 1211 and a refractive inclined surface 1212 arranged adjacent to each other, and the length of the right-angled surface 1211 is mainly determined by the inclination degree of the refractive inclined surface 1212. When the inclination angle of the refractive inclined surface 1212 is large, the length of the right-angled surface 1211 increases accordingly; when the inclination angle of the refractive inclined surface 1212 is small, the length of the right-angled surface 1211 decreases accordingly.

[0049] When the light emitted by the light source body 200 is vertically incident on the incident surface 110 and is totally reflected by the reflecting surface 130, it is refracted out from the refractive inclined surface 1212 of the exit surface 120 to change the path of the light so that the light emitted from the refractive inclined surface 1212 is deflected in one direction as much as possible, such as downward or upward, to avoid the emission of excess light to form glare.

[0050] Continue reading Figure 1 and Figure 2 In some embodiments of the present invention, the angle between the refractive bevel 1212 and the exit surface 120 is α, and the incident angle of the incident light entering the refractive bevel 1212 after total reflection by the reflective surface 130 is γ, where α is equal to γ.

[0051] This arrangement can deflect as much light as possible emitted from the refractive bevel 1212 into one direction, such as downward or upward, so that the emitted light spot is roughly rectangular, so as to better match the photographed object (such as the license plate of vehicle 400), effectively utilize the emitted light, improve the fill light effect, and reduce light waste.

[0052] In other words, the deflection angle of the refractive bevel 1212 is related to the incident angle of the light on the refractive bevel 1212. Therefore, the deflection angle of the refractive bevel 1212 can be controlled by adjusting the angle α between the refractive bevel 1212 and the exit surface 120, that is, by adjusting the structural size of the refractive portion 121, so as to adapt to different use environments and working conditions. For example, the deflection angle of the refractive bevel 1212 is adjusted according to the capture distance of the camera, so that the fill light component can more fully fill light for the capture.

[0053] Continue reading Figure 1 and Figure 2 In some embodiments of the present invention, the angle between the incident surface 110 and the reflecting surface 130 is ∠B, and the incident angle of the incident light incident on the reflecting surface 130 is ∠C, wherein ∠B is greater than or equal to ∠C, that is, ∠B≥∠C.

[0054] In this way, by adjusting the angle of the fill light body 100, the light entering the fill light body 100 is totally reflected inside the fill light body 100 to change the direction of the light, so that almost all the light is emitted from the exit surface 120, so that the light is effectively utilized and light waste is avoided.

[0055] The fill light assembly provided by the embodiment of the utility model has a fill light body 100 so that the fill light body 100 has a light refraction function. When the light source body 200 is arranged on one side of the fill light body 100, the purpose of deflecting the light can be achieved so that the emitted light meets the corresponding use requirements.

[0056] Specifically, in the embodiment of the present invention, the angle of the fill light body 100 is calculated first, so that the light entering the fill light body 100 is totally reflected inside the fill light body 100 to change the direction of the light.

[0057] According to the law of total reflection, the incident light angle is equal to the outgoing light angle. To achieve full reflection of the light entering the fill light body 100, the incident angle ∠C of the light in the fill light body 100 on the reflective surface 130 and the refractive index of the fill light body 100 (determined by the material of the fill light body) need to satisfy the total reflection formula:

[0058]

[0059] Wherein, C is the total reflection angle, and n is the refractive index of the fill light body 100 (such as a straight prism).

[0060] Continue reading Figure 1 At least one lamp bead is placed as a light source body 200 directly below the fill light body 100, that is, the light source body 200 can be one lamp bead or multiple lamp beads. The light source body 200 has an emission angle perpendicular to the incident surface 110 of the fill light body 100, so that the light emitted from the light source body 200 enters the fill light body 100 vertically, and after being totally reflected on the reflective surface 130 of the fill light body 100, it is refracted from the refraction part 121 of the emission surface 120.

[0061] When the material of the fill light body 100 is constant, when the angle ∠B between the incident surface 110 and the reflective surface 130 in the fill light body 100 is greater than or equal to the total reflection angle ∠C, the light must be totally reflected inside the fill light body 100. The totally reflected light is emitted through the exit surface 120 of the fill light body 100. Then, by adding a wedge-shaped refraction portion 121 to the exit surface 120, the direction of the exit light is changed by the wedge-shaped refraction portion 121, so that the exit light is deflected, that is, the exit light is directed in a direction of Figure 1All the directions shown are deflected downward, so that the emitted light spot is roughly rectangular, so as to better match the shape of the photographed object (such as the license plate of the vehicle 400), effectively utilize the emitted light, improve the fill light effect, and reduce light waste.

[0062] There is the following relationship between the incident angle and the emission angle of the refractive slope 1212 in the wedge-shaped refractive portion 121:

[0063] n sinγ=n0sinθ (2)

[0064] n sinα=n0sinθ (3)

[0065] Wherein, α is the angle between the refractive inclined surface 1212 and the emitting surface 120 in the refractive part 121, γ is the incident angle of the deflected light, θ is the emitting angle of the deflected light, n is the refractive index of the fill light body 100, and n0 is the refractive index of air. Wherein, α=γ, n0=1, then the following relationship is obtained:

[0066] sinθ=nsinα (4)

[0067] From this we can see that the actual deflection angle of the light is: β=θ-γ=θ-α.

[0068] Therefore, the angle at which the light is deflected downward can be controlled according to the size of the angle α between the refractive inclined surface 1212 and the exit surface 120 in the refractive portion 121. For example, when the angle α of the refractive portion 121 is increased, the actual angle of the deflected light will decrease; when the angle α of the refractive portion 121 is decreased, the actual angle of the deflected light will increase.

[0069] In some embodiments of the present invention, the fill light body 100 can also be composed of three plane lenses, which are connected end to end in sequence, wherein the first plane lens forms the incident surface 110, the second plane lens forms the exit surface 120, and the third plane lens is coated with a reflective layer to form a reflective surface 130.

[0070] It is equivalent to that the fill light body 100 is composed of three independently arranged plane lenses, and the three plane lenses can be connected together by gluing, pressing, etc. The three plane lenses are connected to each other to enclose a straight triangular prism structure with a hollow structure. The light entering from the incident surface 110 is reflected by the reflective layer in the hollow structure and emitted from the exit surface 120.

[0071] In some embodiments of the present invention, the four sides of the exit surface 120 extend outward to form a stopper 122. During the installation process, the fill light body 100 can be embedded in the camera 300 through the stopper 122, thereby simplifying the installation; after installation, the stopper 122 can also play a limiting role to prevent the exit surface 120 from penetrating into the interior of the camera 300; at the same time, the stopper 122 is equivalent to increasing the area of ​​the exit surface 120, so that light can be emitted from the exit surface 120 more fully.

[0072] Continue reading Figure 3 In some embodiments of the present invention, the shape of the exit surface 120 is adapted to the shape of the photographed object. The photographed object is illustrated by taking the license plate of vehicle 400 as an example. That is, when the license plate of vehicle 400 is roughly rectangular, the shape of the exit surface 120 is correspondingly rectangular, so as to better match the license plate of vehicle 400, effectively utilize the emitted light, improve the fill light effect, and reduce light waste.

[0073] It should be noted that the fill light body 100 can be made of glass or plastic, as long as the fill light body 100 meets the corresponding refractive index so that the refractive index of the fill light body 100 and the angle of the fill light body 100 (prism) meet the total reflection formula.

[0074] Figure 4 It is a structural schematic diagram of a camera 300 provided in an embodiment of the utility model; Figure 5 It is a partial structural diagram of a camera 300 provided in an embodiment of the utility model; Figure 6 It is a partial structural cross-sectional view of the camera 300 provided in the embodiment of the utility model.

[0075] See also Figures 4 to 6 The utility model also provides a camera 300, which includes a camera body and the above-mentioned fill light component, and the fill light component is arranged on the camera body to provide auxiliary light or supplementary light when the camera body is shooting.

[0076] Among them, the camera body includes a shell 310 and a mounting panel 320. The mounting panel 320 is also called the "front face" of the camera 300. A video acquisition component 321 is provided on the mounting panel 320; the fill light component is embedded in the mounting panel 320 and is located on at least one side of the video acquisition component 321, and is used to provide auxiliary light or supplementary light when the video acquisition component 321 is shooting.

[0077] That is, the fill light component can be located above, below, on the left or on the right of the video acquisition component 321, or can be located at least two of the above, below, on the left and on the right of the video acquisition component 321. The specific setting method is adjusted according to actual use needs.

[0078] Figure 7 FIG. 8 is a diagram showing the effect of the fill light assembly provided in an embodiment of the present invention; FIG. 9 is a diagram showing the effect of the fill light assembly provided in an embodiment of the present invention, wherein (a) is a second diagram showing the effect of the fill light assembly provided in an embodiment of the present invention; and (b) is a diagram showing the effect of an existing fill light assembly.

[0079] See also Figure 7 As shown in FIG8 , if the fill light body 100 is a right-angle prism, then ∠A = 90°, and the material of the prism is known, then n = 1.5, and the following total reflection formula is obtained:

[0080]

[0081] According to the total reflection formula, ∠C=41.8°, therefore, when ∠B is set to be greater than 41.8°, the light entering the prism will definitely be totally reflected, and ∠B=45° can be selected at this time. In addition, it is known that the angle α between the refractive inclined surface 1212 and the exit surface 120 in the refractive portion 121 of the prism surface is 30°, which has the following formula:

[0082]

[0083] According to the above formula, it can be concluded that the deflection angle of the light ray is θ=48.6°.

[0084] From this, we can know that the actual deflection angle of the light is: β = θ-α = 48.6-30 = 18.6°

[0085] The rectangular prism designed according to the above relevant dimensions is simulated and applied in the whole camera 300, and the following can be obtained: Figure 7 To the effect diagram shown in Figure 8.

[0086] like Figure 7 As shown, the "front face" of the camera 300 and the right-angle prism of the above-mentioned size are brought into the TracePro optical simulation software, and it is found that after using the right-angle prism fill light provided by the utility model, the light source of the lamp beads can be concealed, and the entire right-angle prism will serve as a light source to form a light-emitting surface. There is no surface graininess, and the naked eye senses it as a whole light emission, which has an anti-glare effect compared to the lens fill light.

[0087] like Figure 7 The figure shows the illumination diagram of the right-angle prism as a whole, which meets the corresponding design requirements. The more light sources there are, the more uniform the light emission on the surface of the right-angle prism.

[0088] As shown in Figure 8, TracePro optical simulation software is used to simulate the light spot illumination diagram of the light source after passing through a right-angle prism and irradiating to a distance of 1m. Among them, Figure (a) is the light spot illumination diagram after the light source is deflected by the designed right-angle prism. It can be seen that the light is basically offset to one side, that is, the light spot is distributed on one side, forming a roughly rectangular light spot, which can more closely fill in the license plate of the vehicle 400, while there is basically no light on the other side. In actual use, when the vehicle 400 is captured by the camera 300 at the entrance and exit, there is basically no energy above the vehicle 400, and all the energy is concentrated on the license plate below the vehicle 400, so this setting meets the use requirements. Figure (b) is the light spot illumination diagram of the light source after passing through the lens in the prior art. It can be seen that the basically circular light spots are evenly distributed, and there are light spots distributed on both sides.

[0089] When the fill light assembly provided by the utility model is applied to the camera 300, the upper part of the light can be completely deflected to the license plate below the vehicle 400, so that the light source utilization rate is high and there is no energy waste. The use of the fill light body 100 (right angle prism) can achieve the effect of anti-glare. Since no light will be irradiated on the upper area when the vehicle 400 is driving, no excess light will pass through the glass into the interior of the vehicle 300 to cause glare problems.

[0090] It should be noted that the technical solutions in various embodiments of the present utility model can be combined with each other, but the basis for the mutual combination is that it can be implemented by ordinary technicians in the field; when the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist, that is, it does not belong to the protection scope of the present utility model.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model 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 various embodiments of the utility model.

Claims

1. A fill light component, characterized in that: include: The fill light body has an incident surface, an exit surface and a reflective surface which are adjacently arranged, the incident surface is arranged perpendicular to the exit surface, and a plurality of refractive parts are arranged in an array on the exit surface; The light source body is arranged at one side of the supplementary light body. The light emitted by the light source body is suitable for passing through the incident surface and being totally reflected by the reflective surface before being refracted out from the refraction part of the exit surface.

2. The fill light assembly according to claim 1, characterized in that: The refraction portion comprises a right-angle surface and a refraction inclined surface which are adjacently arranged, and the light emitted from the emission surface is deflected and refracted by the refraction inclined surface.

3. The fill light assembly according to claim 2, characterized in that: The angle between the refractive inclined surface and the emitting surface is α, and the incident angle of the incident light that is incident on the refractive inclined surface after total reflection by the reflecting surface is γ, wherein α is equal to γ.

4. The fill light assembly according to claim 1, characterized in that: The angle between the incident surface and the reflecting surface is ∠B, and the incident angle of the incident light incident on the reflecting surface is ∠C, wherein ∠B is greater than or equal to ∠C.

5. The fill light assembly according to claim 1, characterized in that: The light emitted by the light source body is vertically incident on the incident surface.

6. The fill light assembly according to any one of claims 1 to 5, characterized in that: The periphery of the emission surface extends outward to form a corresponding stopper.

7. The fill light assembly according to claim 6, characterized in that: The shape of the emission surface is adapted to the shape of the photographed object.

8. The fill light assembly according to claim 1, characterized in that: The fill light body is composed of three plane lenses, which are connected end to end in sequence, wherein the first plane lens forms the incident surface, the second plane lens forms the exit surface, and the third plane lens is coated with a reflective layer to form the reflection surface.

9. A camera, characterized in that: It comprises a camera body and a fill light assembly as claimed in any one of claims 1 to 8, wherein the fill light assembly is arranged on the camera body and is used to provide supplementary light when the camera body is shooting.

10. The camera according to claim 9, characterized in that The camera body comprises a shell and a mounting panel, and the mounting panel is provided with a video acquisition component; The fill light component is embedded in the installation panel and is located on at least one side of the video acquisition component, and is used to provide supplementary light when the video acquisition component is shooting.