WO2019105059A1

WO2019105059A1 - Fill light and camera

Info

Publication number: WO2019105059A1
Application number: PCT/CN2018/098525
Authority: WO
Inventors: 程广伟; 杨坤; 马宇飞; 唐海龙; 廉瑞凯
Original assignee: 杭州海康威视数字技术股份有限公司
Priority date: 2017-11-29
Filing date: 2018-08-03
Publication date: 2019-06-06

Abstract

A fill light and a camera. The fill light comprises: a housing, and a light board located in the housing. The housing has a light-transmissive window; the light board is located at the bottom or side surface of the housing; the inner surfaces of the housing other than the surface where the light board is located and the emission surface of the light-transmissive window are reflective surfaces; light emitting elements are provided on the light board; light emitted by the light emitting elements exits through the reflective surfaces and the emission surface, such that the surface brightness of the light-transmissive window is 30,000-100, 000 cd/m2; the surface where the light board is located is parallel to or intersects the emission surface. By application of embodiments of the present application, the surface brightness of the fill light can be decreased, thereby reducing glare.

Description

Fill light and camera

The present application claims priority to Chinese Patent Application No. PCT Application No. No. No. No. No. No. No. No. No. The present application claims priority to Chinese Patent Application No. PCT Application No. No. No. No. No. No. No. No. No. No. No. No.

Technical field

The present application relates to the field of photographing fill light technology, and in particular to a fill light and a camera.

Background technique

The face recognition capture camera is a high-definition surveillance intelligent camera that can track, recognize and intelligently zoom in on the face, making up for the general outline that only the human camera can see. This smart camera captures the face directly, and as soon as it enters the surveillance range, it captures the face and enables intelligent monitoring. Among them, the face recognition camera captures light in a dark environment to more accurately recognize the face.

In the process of filling light with fill light, the fill light will produce strong glare to the human eye, so that people will deliberately avoid light exposure (such as walking down or walking around) in the range of light illumination, resulting in Face recognition and snapping failed. Therefore, how to reduce the glare caused by the fill light to the human eye is a problem to be solved.

Summary of the invention

The present application provides a fill light and a camera to reduce the surface brightness of the fill light source, thereby reducing the degree of glare. The specific technical solutions are as follows:

An embodiment of the present application provides a fill light, comprising: a housing, and a light board located in the housing; the housing has a light transmission window;

The light board is located at the bottom or the side of the housing, and the inner surface of the housing except the surface where the light board is located and the emitting surface of the light transmission window is a reflecting surface;

The light board is provided with a light emitting element, and the light emitted by the light emitting element is emitted through the reflecting surface and the emitting surface, so that the surface brightness parameter of the light transmitting window is 30,000 to 100,000 candelas per square meter;

The surface on which the light board is located and the emitting surface are in a parallel relationship or a intersecting relationship.

Optionally, the surface area of the light-transmitting window is larger than the surface area of the light board, and the surface area of the light-emitting element is smaller than the surface area of the light board.

Optionally, the emitted light of the light emitting element is emitted through the reflective surface and the emitting surface such that a ratio of a minimum brightness value to a maximum brightness value of each point of the light transmitting window surface is greater than or equal to 70%.

Optionally, the light transmission window is a polycarbonate material, or a polymethyl methacrylate material, or a polypropylene material, and the light transmission window has a light transmittance of 40% to 80%.

Optionally, the emitting surface is provided with a reflective coating.

Optionally, the light board is provided with a plurality of light emitting elements;

The plurality of light emitting elements are evenly arranged on the light board, and the layout of the plurality of light emitting elements on the light board is a one-column layout or a multi-column layout.

Optionally, when a layout of the plurality of light emitting elements on the light board is a column layout, a vertical distance between an emitting surface of the light transmitting window and the light emitting element and a distance between the light emitting elements Ratio is greater than 1.5;

When the layout of the plurality of light emitting elements on the light board is a multi-column layout, and the lateral spacing and the longitudinal spacing between the light emitting elements are the same, the emitting surface of the light transmitting window to the light emitting element The ratio of the vertical distance to the spacing between the light-emitting elements is greater than 1.5;

When the layout of the plurality of light emitting elements on the light board is a multi-column layout, and the lateral spacing and the longitudinal spacing between the light emitting elements are different, the emitting surface of the light transmitting window to the light emitting element The vertical distance is greater than 1.5 between the lateral spacing between the illuminating elements and the larger spacing of the longitudinal spacing.

Optionally, when the surface where the light board is located is in parallel relationship with the emitting surface, the reflective surface is a free curved surface;

The reflecting surface is a paraboloid when the face on which the light board is located is in an intersecting relationship with the emitting surface.

Optionally, the light-emitting element is provided with a lens, and the lens is a hyperbolic lens, and the lens comprises a lens light-incident surface and a lens light-emitting surface.

Optionally, when the surface where the light board is located is in a parallel relationship with the emitting surface, the reflective surface is aspherical.

Optionally, the reflective surface is a polycarbonate material.

Optionally, the reflective surface of the housing is provided with a reflective film or a reflective paint or a diffuse reflection layer.

Optionally, the light emitting element is a light emitting diode LED light.

Optionally, the light transmission window is a honeycomb panel;

The honeycomb panel includes: a glass plate, a light-shading plate, and a honeycomb frame, the honeycomb frame being fixed between the glass plate and the light-shading plate, the glass plate facing an outer side of the light-emitting opening of the casing, The light concentrating plate faces the inner side of the light exit opening of the casing, the honeycomb skeleton is hollow and has a plurality of honeycomb cells;

The light emitted by the light-emitting element is emitted through the reflective surface and the emitting surface of the light-shading plate, and then emitted through the honeycomb grid and the glass plate.

Optionally, the fill light further includes: a reflector fixed in the housing;

The light emitted by the light-emitting element is emitted through the reflective surface of the reflector and the emitting surface of the light-shading plate, and then emitted through the honeycomb grid and the glass plate.

Optionally, the bottom of the housing is further provided with a heat dissipation base, and the heat dissipation base is fixedly connected to the light board.

Optionally, the cell is a through hole corresponding to the honeycomb frame, and the through hole is hexagonal, or quadrangular, or circular, or elliptical.

Optionally, a ratio of a thickness of the honeycomb panel to an aperture size of the through hole is less than or equal to a field angle tangent of a camera where the fill light is located.

Optionally, the material of the honeycomb skeleton is an injection molded opaque white plastic or a black light absorbing material.

Optionally, the surface area of the light-shading plate is larger than the surface area of the light-emitting plate, and the surface area of the light-emitting element is smaller than the surface area of the light-emitting plate.

Optionally, the material of the light-shading plate is a polycarbonate material, or a polymethyl methacrylate material, or a polypropylene material, and the light transmittance of the light-shading plate is 40% to 80%.

The embodiment of the present application further provides a camera, where the camera includes the fill light of any of the above, and the camera is detachably connected to the fill light.

The fill light and the camera provided by the embodiment of the present application comprise a housing and a light board located in the housing; the housing has a light-transmissive window; the light board is located at the bottom or the side of the housing, and the light board is located in the housing The inner surface of the surface and the emitting surface of the light transmission window is a reflecting surface; the light board is provided with a light emitting element, and the light emitted by the light emitting element is emitted through the reflecting surface and the emitting surface, so that the surface brightness parameter of the light transmitting window is 3 ~100,000 candelas per square meter; the surface on which the light board is located and the emitting surface are in a parallel relationship or intersecting relationship. The use of a surface light source through the lamp panel reduces the surface brightness of the fill light source and reduces the degree of glare, thereby reducing the glare caused by the fill light to the human eye. Of course, implementing any of the products or methods of the present application does not necessarily require that all of the advantages described above be achieved at the same time.

DRAWINGS

In order to more clearly illustrate the embodiments of the present application and the technical solutions of the prior art, the following description of the embodiments and the drawings used in the prior art will be briefly introduced. Obviously, the drawings in the following description are only Some embodiments of the application may also be used to obtain other figures from those of ordinary skill in the art without departing from the scope of the invention.

1 is a first structural schematic view of a fill light provided by an embodiment of the present application;

2(a) is a first schematic structural view of a light-emitting element in a fill light provided by an embodiment of the present application;

2(b) is a second schematic structural view of a light-emitting element in a fill light provided by an embodiment of the present application;

2(c) is a third structural schematic view of a light-emitting element in a fill light provided by an embodiment of the present application;

2(d) is a fourth structural diagram of a light-emitting element in a fill light provided by an embodiment of the present application;

3 is a schematic diagram of a second structure of a fill light provided by an embodiment of the present application;

4 is a schematic diagram of a third structure of a fill light provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a fourth type of fill light provided by an embodiment of the present application; FIG.

6 is another schematic structural diagram of a light-emitting element in a fill light provided by an embodiment of the present application;

Figure 7 (a) is an external view of a fill light provided by an embodiment of the present application;

Figure 7 (b) is a rear view of the fill light provided by the embodiment of the present application;

Figure 7 (c) is a front view of the fill light provided in the embodiment of the present application;

Figure 8 (a) is a front view of a prior art fill light applied to a camera;

Figure 8 (b) is a rear view of the prior art fill light application in the camera;

Figure 8 (c) is a side view of a prior art fill light application in a video camera;

8(d) is a schematic structural view of a prior art fill light applied to a camera;

FIG. 9( a) is a front view showing the application of a fill light in a camera according to an embodiment of the present application;

FIG. 9(b) is a side view of the fill light provided in the camera according to an embodiment of the present application;

FIG. 9(c) is a rear view showing the application of the fill light in the camera according to an embodiment of the present application;

10 is a comparison diagram of the area of the fill light source of the conventional camera and the area of the fill light source provided by the embodiment of the present application;

11 is a structural distribution diagram of a fill light according to an embodiment of the present application;

12 is a schematic diagram of a honeycomb skeleton in a fill light according to an embodiment of the present application;

13 is another schematic diagram of a honeycomb skeleton in a fill light according to an embodiment of the present application;

Figure 14 is a distribution diagram of light rays of a conventional fill light;

15 is a distribution diagram of light rays of a fill light provided by an embodiment of the present application.

Figure 16 is a light distribution diagram of a conventional fill light;

17 is a light distribution diagram of a fill light provided by an embodiment of the present application;

FIG. 18 is a schematic diagram of a fifth structure of a fill light provided by an embodiment of the present application; FIG.

FIG. 19 is a schematic structural diagram of a sixth type of fill light according to an embodiment of the present application; FIG.

FIG. 20 is a schematic structural diagram of a light-emitting element provided with a lens in a fill light according to an embodiment of the present application.

Detailed ways

In order to make the objects, technical solutions, and advantages of the present application more comprehensible, the present application will be further described in detail below with reference to the accompanying drawings. It is apparent that the described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

At present, many monitoring equipment, camera equipment, etc. are equipped with a fill light for lighting compensation for some equipment or objects that lack illumination. In the process of filling light, the glare value is a psychological parameter that measures the subjective reaction of the light emitted by the lighting device in the visual environment to the human eye. The glare value is too strong, which may affect the shooting effect of the device, or reduce the device's Recognition rate, etc.

Among them, the magnitude of the glare value is calculated according to the following formula.

Specifically, according to the formula

Glare value calculated, wherein, the UGR represents a glare value, L _b represents background brightness, L _a represents a luminance of each lamp direction of the viewer, [omega] represents a solid angle of each lamp light emitting portion formed on the viewer's eye, p is each represents The position index of the individual luminaire.

It can be seen from the formula that the glare value (UGR) is related to four parameters, which are inversely proportional to L _b (background brightness) and p (position index of each individual luminaire), and L _a (observer direction per The brightness of the luminaires and ω (the solid angle of each luminaire to the observer's eyes) is proportional. Since the values of p and L _b typically can not be controlled in an actual environment, therefore, it is to control the parameters are L _a and ω.

Among them, according to the formula

Calculating a luminance of each lamp direction of the viewer, wherein, L _a represents a luminance of each direction of the viewer of the lamp, I _a represents the direction of the observer's eye lamp luminous intensity, A · cosa represents the projected area lamp eye direction of the observer, a indicates the angle at which the surface of the luminaire is found to be in the direction of the observer's eyes.

According to the formula

Calculating the solid angle formed by the illuminating portion of each luminaire to the observer's eyes, where ω represents the solid angle formed by the illuminating portion of each luminaire to the observer's eyes, and A _p represents the apparent area of the illuminating member in the direction of the observer's eye. , r represents the distance from the center of the illuminating part of the luminaire to the observer's eye.

According to the formula

It can be seen that UGR is proportional to I _a and inversely proportional to A. Therefore, by reducing the UGR, the luminous intensity of the luminaire can be reduced, and the area of the luminaire can be increased.

However, in the camera, in order to achieve a clear image under a certain monitoring distance, the illuminated object must obtain sufficient illumination to meet the requirements, and the luminous intensity of the lamp cannot be reduced indefinitely. Therefore, in the white light fill light, it is more effective to increase the light-emitting area of the lamp.

Based on this, the embodiment of the present application adopts a surface light source to increase the area of the light transmission window (ie, increase the area of the lamp), and the surface light of the light source can reduce the surface brightness of the light source to reduce glare. the goal of. The specific process is as follows:

The embodiment of the present application discloses a fill light. As shown in FIG. 1 , the fill light includes:

a housing 1 and a light panel 2 located within the housing 1; wherein the housing 1 has a light transmissive window 3.

The lamp panel 2 is located at the bottom or side of the casing 1, and the inner surface of the casing 1 other than the surface on which the lamp panel 2 is located and the inner surface of the light-emitting window 3 is the reflecting surface 4.

The light board 2 is provided with a light-emitting element 5, and the light 6 emitted from the light-emitting element 5 is emitted via the reflecting surface 4 and the emitting surface 7 so that the surface brightness parameter of the light-transmitting window 3 is 3 to 100,000 candelas per square meter.

Here, since the light-emitting area is increased, the brightness parameter of the light-transmitting window 3 is reduced to 30,000 to 100,000 candelas per square meter, and the brightness of the fill light itself is very high in the prior art, reaching hundreds of thousands or even hundreds of thousands of candelas. Compared with each square meter, the fill light provided by the present application reduces the surface brightness of the fill light source, thereby increasing the apparent area of the fill light in the direction of the observer's eyes, thereby reducing the glare intensity.

The surface on which the light board is located and the emitting surface 7 are in a parallel relationship or an intersecting relationship.

Specifically, the light-transmitting window is the light exiting port of the light, and the light-transmitting window has a light-transmitting surface, that is, an emitting surface reflected by the light. The position of the light board in the housing may be at the bottom of the housing or on the side of the housing, which is related to the structure of the housing itself. For example, when the housing is a cube, the position of the light board in the housing is At the bottom of the cube, when the casing has other irregular shapes, or when there are only two sides in the casing, the position of the lamp plate in the casing may be one of the sides, and the other side is a reflecting surface for receiving The light emitted by the light-emitting element reflects and transmits the received light to the emitting surface of the light-transmitting window, so that the emitting surface emits light, thereby achieving the effect of filling light.

The light board is provided with a light-emitting element, and the light emitted by the light-emitting element is emitted through the reflecting surface and the emitting surface of the light-transmitting window. Compared with the point light source used in the prior art, the light board reduces the light source by the surface light source. Surface brightness. In addition, the light board may be a direct LED light source, or may be an LED light source + a secondary lens. The light-emitting element may be a light-emitting diode (LED), an incandescent light bulb, or a xenon lamp, and the like.

It can be seen that the fill light provided by the embodiment of the present application includes a housing and a light board located in the housing; the housing has a light-transmitting window; the light board is located at the bottom or the side of the housing, and the surface of the housing except the light board The inner surface outside the emitting surface of the light transmitting window is a reflecting surface; the light board is provided with a light emitting element, and the light emitted by the light emitting element is emitted through the reflecting surface and the emitting surface, and the surface on which the light board is located and the emitting surface are in a parallel relationship or Intersection relationship. The use of a surface light source through the light panel reduces the surface brightness of the fill light source, thereby increasing the apparent area of the fill light in the direction of the observer's eye, thereby reducing the glare intensity.

In an alternative embodiment of the present application, the surface area of the light-transmitting window 3 is larger than the surface area of the light board 2, and the surface area of the light-emitting element 5 is smaller than the surface area of the light board 2.

Specifically, when the surface area of the light-transmitting window 3 is larger than the surface area of the light-emitting panel 2, and the surface area of the light-emitting element 5 is smaller than the surface area of the light-emitting board 2, the surface area of the light-transmitting window 3 is larger than the surface area of the light-emitting element 5, and thus, the surface area of the light-transmitting window 3 It is larger than the surface area of a single LED fill light in the prior art, and the glare intensity is reduced by increasing the light-emitting area.

In an optional embodiment of the present application, the emitted light 6 of the light-emitting element 5 is emitted via the reflecting surface 4 and the emitting surface 7 such that the ratio of the minimum brightness value to the maximum brightness value of each point on the surface of the light-transmitting window 3 is greater than or Equal to 70%.

Here, since the light 6 emitted from the light-emitting element 5 passes through the points on the surface of the light-transmitting window 3, the brightness values of the points on the surface of the light-transmitting window 3 are close to each other, so that the emitted light is relatively uniform.

In the embodiment of the present application, the light transmission window 3 is a polycarbonate material, or a polymethyl methacrylate material, or a polypropylene material, and the light transmittance of the light transmission window 3 is 40% to 80%.

Specifically, the material of the light-transmitting window may be an optical diffusing material such as polycarbonate (PC), polymethylmethacrylate (PMMA), or polypropylene (PP). It is preferred that the primary transmittance of light in the light-transmitting window is 40% to 60%, because the lower the transmittance, the better the optical uniformity.

In the embodiment of the present application, the emitting surface 7 is provided with a reflective coating.

In the embodiment of the present application, a plurality of light emitting elements 5 may be disposed on the light board 2.

Further, a plurality of light-emitting elements 5 are evenly arranged on the lamp panel 2, and the layout of the plurality of light-emitting elements 5 on the lamp panel 2 is a one-column layout or a multi-column layout.

Specifically, as shown in FIGS. 2(a) and 2(b), in order to increase the intensity of the light source of the light-emitting element 5, a plurality of light-emitting elements 5 may be disposed on the light-emitting plate 2. In addition, the plurality of light-emitting elements 5 can be evenly arranged on the light board 2, wherein the layout of the plurality of light-emitting elements 5 on the light board 2 in FIG. 2(a) is a column layout, in FIG. 2(b) The layout of the plurality of light-emitting elements 5 on the light-emitting panel 2 is a three-column layout, and may be other multi-column layouts, which are not enumerated here, so that the light emitted from the light-emitting elements 5 is relatively uniform.

In addition, when the layout of the plurality of light-emitting elements 5 on the light board 2 is a multi-column layout, the lateral spacing and the longitudinal spacing between the light-emitting elements 5 may be the same or different, as shown in FIG. 2(c), the lateral spacing. L2 is greater than the longitudinal spacing l1. As shown in Fig. 2(d), the lateral pitch l2 is the same as the longitudinal pitch l1. Here, the position of the light-emitting element can be set according to actual needs.

In an optional embodiment of the present application, when the layout of the plurality of light-emitting elements 5 on the light board 2 is a column layout, the vertical distance between the emitting surface 7 of the light-transmitting window 3 and the light-emitting element 5 and the light-emitting element 5 The ratio of the pitch is greater than 1.5; when the layout of the plurality of light-emitting elements 5 on the light board 2 is a multi-column layout, and the lateral spacing and the longitudinal spacing between the light-emitting elements 5 are the same, the emitting surface 7 of the light-transmitting window 3 is illuminated The ratio of the vertical distance of the element 5 to the spacing between the light-emitting elements 5 is greater than 1.5; when the layout of the plurality of light-emitting elements 5 on the light board 2 is in a multi-column layout, and the lateral spacing and longitudinal spacing between the light-emitting elements 5 are not At the same time, the ratio of the vertical distance of the emitting surface 7 of the light-transmitting window 3 to the light-emitting element 5 to the larger of the lateral spacing and the longitudinal spacing between the light-emitting elements 5 is greater than 1.5.

Specifically, as shown in FIG. 3, when the plurality of light-emitting elements 5 are evenly arranged on the lamp board, the distance S2 between the light-emitting elements 5 can be calculated, and the light-emitting element 5 can be calculated to the emission surface 7 of the light-transmitting window 3. The vertical distance S1, when the ratio of the vertical distance S1 of the emitting surface 7 to the light-emitting element 5 to the pitch S2 of the light-emitting element 5 is greater than 1.5, the light emitted by the light-emitting element 5 optimizes the light-filling effect of the fill light. It should be noted that when the layout of the plurality of light-emitting elements 5 on the light board 2 is a column layout, S2 is the spacing between the light-emitting elements 5 arranged uniformly in this row; when the plurality of light-emitting elements 5 are on the light board 2 The layout is a multi-column layout, and when the lateral spacing and the longitudinal spacing between the light-emitting elements 5 are the same, S2 is the spacing between the plurality of uniformly arranged light-emitting elements 5, for example, may be the lateral direction in FIG. 2(d) a spacing l2 or a longitudinal spacing l1; when the layout of the plurality of light-emitting elements 5 on the light board 2 is a multi-column layout, and the lateral spacing and the longitudinal spacing between the light-emitting elements 5 are different, S2 is the lateral direction between the light-emitting elements 5 The larger of the pitch and the longitudinal pitch may be the lateral pitch l2 in Fig. 2(c).

In an optional embodiment of the present application, when the surface of the light board 2 and the emitting surface 7 are in a parallel relationship, the reflecting surface 4 is a free curved surface; when the surface where the light board 2 is located and the emitting surface 7 are in a relationship, The reflecting surface 4 is a paraboloid.

Here, the surface where the light board 2 is located and the surface where the emitting surface 7 is located are in a parallel relationship or an intersection relationship, and specifically may be:

The first case: the surface on which the light board is located is parallel to the surface on which the light emitting surface is located.

Specifically, as shown in FIG. 1 , the fill light includes: a housing 1 , the shape of the housing 1 may be a cube, and a light board 2 located in the housing 1 ; wherein the housing 1 has a light-transmitting window 3 The light window 3 is located at the exit portion of the housing 1 (cube); the light board 2 is located at the bottom of the housing 1 (cube), and the surface on which the light board 2 is located is parallel to the emitting surface 7 of the light-transmitting window 3; The inner surface of the surface on which the board 2 is located and the emitting surface of the light-transmitting window is a reflecting surface 4; the light-emitting element 5 is disposed on the light-emitting board 2, and the light 6 emitted from the light-emitting element 5 is emitted through the reflecting surface 4 and the light-transmitting window 3. Face 7 is issued.

Here, the surface on which the light board 2 is located is in parallel relationship with the surface on which the emitting surface 7 is located, such that the light board 2 is directly under the housing, and the light 6 emitted from the light board 2 passes through the direct exit and reflection surface 4, and finally The light is emitted through the emitting surface 7 of the upper light-transmitting window 3.

The light board 1 can be a direct LED light source, or can be an LED light source + a secondary lens, the reflective surface 4 is a free curved surface or an aspherical surface, and the reflective surface 4 is coated with a reflective film or a reflective paint or a diffuse reflective coating. . The emitting surface 7 of the light transmissive window 3 can be an optically diffusing material.

The second case: the surface on which the light board is located intersects with the surface on which the light transmission window is located.

Specifically, the intersection relationship is divided into mutually perpendicular and non-perpendicular to each other. When the surface on which the light board is located and the surface on which the light transmission window is located are perpendicular to each other, as shown in FIG. 4, the fill light includes: the housing 1, the housing 1 The shape may be irregular, and the light board 2 located in the housing 1; wherein the housing 1 has a light-transmitting window 3; the light board 2 is located on one side of the housing 1, the surface of the light board 2 is transparent The emitting surface 7 of the window 3 is perpendicular to each other; the inner surface of the casing 1 except the surface on which the light board 2 is located is the reflecting surface 4, and the reflecting surface 4 is located on the other side of the casing 1; the light board 2 is provided with the light emitting element 5. The light 6 emitted by the light-emitting element 5 passes through the reflecting surface 4 and the emitting surface 7 of the light-transmitting window 3.

Here, the surface on which the light board 2 is located is perpendicular to the surface on which the light transmission window 3 is located, such that a part of the light 6 emitted from the light board 2 is emitted from the light transmission window 3 by direct light, and most of the light passes through the reflection surface 4 The reflection is finally emitted from the light transmission window 3.

Similarly, the light board 2 can be a direct LED light source, or can be an LED light source + a secondary lens, the reflective surface 4 is a free curved surface or an aspherical surface, and the reflective surface 4 is coated with a reflective film or sprayed with a reflective paint or a diffuse surface. Reflective coating. The emitting surface 7 of the light transmissive window 3 can be an optically diffusing material.

When the surface where the light board is located and the surface where the light transmission window is located are perpendicular to each other, as shown in FIG. 5, the angle between the surface where the light board is located and the surface where the light transmission window is located may be any angle. The fill light comprises: a housing 1 having an irregular shape and a light board 2 located inside the housing 1; wherein the housing 1 has a light-transmissive window 3; the light board 2 is located in the housing 1 On the side, the surface on which the light board 2 is located is at an angle to the surface of the light-transmitting window 3; the inner surface of the housing 1 other than the inner surface except the surface on which the light board 2 is located is the reflecting surface 4, that is, the reflecting surface 4 is located The other side of the casing 1 is provided with a light-emitting element 5 on the light-emitting plate 2, and the light 6 emitted from the light-emitting element 5 passes through the reflecting surface 4 and the emitting surface 7 of the light-transmitting window 3.

For the two cases of parallel and intersecting, in order to reduce the brightness unevenness on the emitting surface, the local bright spot gives a glare, and the following methods can be used to ensure the brightness uniformity of the emitting surface, thereby improving the brightness comfort of the light-filling device. Specifically, including:

1. The ratio of the distance from the emitting surface of the light-transmitting window to the light-emitting element and the spacing of the light-emitting elements is greater than 1.5;

2. For the secondary lens applied on the LED, a high-angle uniformization design is adopted to improve the uniformity of the emitting surface. The lens is generally a hyperbolic lens, including a light-incident surface and a light-emitting surface, through the lens surface. Optimize to achieve high angle uniformization;

3. For the light transmission window 3, the primary transmittance is 40% to 80%, and the lower the transmittance, the better the optical uniformity.

In an optional embodiment of the present application, the light-emitting element 5 is provided with a lens 8, the lens 8 is a hyperbolic lens, and the lens 8 includes a lens light-incident surface and a lens light-emitting surface.

Specifically, as shown in FIG. 6, the light-emitting element 5 is provided with a lens 8 including a lens light-incident surface and a lens light-emitting surface, and the lens light-incident surface is for receiving light emitted by the light-emitting element, and the lens light-emitting surface is used for The light received by the lens entering the light surface is emitted, and the large-angle uniform light is realized by optimizing the lens surface shape. The uniformity of the emitting surface of the light-transmitting window can be improved by using a large-angle uniformizing design for the secondary lens applied to the light-emitting element.

In the embodiment of the present application, the reflecting surface 4 is a free curved surface.

Here, the reflecting surface may be any curved surface, and the reflecting surface is used for receiving the light emitted by the light emitting element, and reflecting and transmitting the received light to the emitting surface of the light transmitting window, so that the emitting surface emits light, thereby realizing the fill light. effect.

In the embodiment of the present application, when the surface where the light board 2 is located is in parallel relationship with the emitting surface 7, the reflecting surface 4 is aspherical.

Here, the reflecting surface may be aspherical, so that the reflection effect of the light passing through the reflecting surface is better.

In the embodiment of the present application, the reflecting surface 4 is a polycarbonate material.

Here, the reflective surface is made of a polycarbonate material, and may be a high reflectivity polycarbonate material or other material coated with a high reflectivity coating, and is generally metal or plastic.

In the embodiment of the present application, the reflective surface of the housing 1 is provided with a reflective film or a reflective paint or a diffuse reflection layer.

Here, the reflective film or the reflective paint or the diffuse reflection layer functions to allow the light to be reflected, so that the light on the lamp plate is reflected by the reflective surface to the light-transmitting window, thereby reducing the surface brightness of the fill light source. The apparent area of the fill light in the direction of the observer's eye is increased, thereby reducing the glare intensity.

In the embodiment of the present application, the light emitting element 5 is a light emitting diode LED lamp.

Compared with incandescent bulbs and xenon lamps, LEDs are characterized by low operating voltages (some only a few volts); low operating currents (some can only be illuminated at a few mAh); impact and shock resistance Good, high reliability, long life; the intensity of the light can be easily modulated by the intensity of the current passing through the modulation. Due to these characteristics, LEDs are used as light sources in some optoelectronic control devices.

The appearance of the fill light provided by the embodiment of the present application may be as shown in FIG. 7( a ), the surface area of the light transmission window 3 is larger than the surface area of the light board 2 , so that the surface area of the light transmission window 3 is larger than that in the prior art. The surface area of a single LED fill light can reduce the degree of glare by increasing the light-emitting area when the light-emitting intensity is the same as in the prior art. The specific structure diagram can be seen in Figure 7(b) and Figure 7(c).

A camera is also disclosed in the embodiment of the present application. The camera 9 includes the fill light 10 provided in the above embodiment, wherein the camera 9 and the fill light 10 are detachably connected.

Here, the camera 9 is detachably connected to the fill light, which is different from the prior art in which the fill light is built in the camera. The fill light in the prior art is built in the camera, as shown in FIG. 8(a). It is shown that a conventional fill light 11 is attached around the camera of the camera 9, and the light emitted by the conventional fill light 11 is used to fill the imaged object. Figure 8 (b) is a rear view of the prior art fill light application in the camera; Figure 8 (c) is a side view of the prior art fill light application in the camera; Figure 8 (d) is A schematic diagram of a prior art fill light applied to a camera; in FIG. 8(d), the conventional fill light 11 is specifically composed of a pedestal 14, an LED lamp 13, and a light-transmitting window 12, The seat 14 is directly disposed on the camera 9, and the LED lamp is placed in the susceptor 14, and the light emitted from the LED lamp 13 is directly passed through the light transmission window 12 to fill the camera 9.

The fill light provided by the embodiment of the present application is applied to a camera, and the camera 9 and the fill light 10 are detachably connected.

Specifically, on the camera 9, the fill light 10 in the embodiment of the present application is used to fill the camera 9 to reduce the surface brightness of the light source, thereby reducing the glare. According to the actual application, the entire fill light 10 can be combined with the camera 9 in the upper and lower manner. As shown in FIG. 9( a ), the fill light 10 can be combined with the camera 9 and can be fixed to the camera by screws or buckles. Below. The fill light provided by the embodiment of the present invention can reduce the glare caused by the fill light to the human eye and reduce the discomfort of the human person. In the process of capturing and recognizing the camera, the person can directly look at the monitoring device, thereby improving the face capture. And the success rate of recognition.

Figure 9 (b) is a side view of the fill light provided in the camera in the embodiment of the present application; Figure 9 (c) is a rear view of the fill light applied in the camera according to the embodiment of the present application; Figure 9 (b) The structure of the camera and the fill light provided in Fig. 9(c) and Fig. 9(a) are the same.

In addition, the entire fill light can also be in other combinations, or separately made up of fill light fixtures, placed next to or other positions to fill the camera.

Referring to FIG. 10, FIG. 10 is a comparison diagram of the area of the fill light source of the conventional camera and the area of the fill light source provided by the embodiment of the present application. In FIG. 10, m1 is the area of the fill light source of the existing camera, and m2 is the area of the fill light source provided by the embodiment of the present application. As can be seen from FIG. 10, the area of the light source of m2 is much larger than the area of the light source of m1. . The application of the fill light provided in the embodiment of the present application in the camera is to increase the surface area of the fill light source by increasing the light-emitting area under the condition that the light-emitting intensity is constant, thereby increasing the fill light. The apparent area of the eye direction reduces the degree of glare, so that in the process of camera capture and recognition, the person can directly look at the monitoring device, thereby improving the success rate of face capture and recognition.

Referring to FIG. 11, in the fill light of the embodiment of the present application, the light transmission window 3 is a honeycomb panel;

The honeycomb panel includes a glass plate 301, a light-shading plate 302, and a honeycomb frame 303. The honeycomb frame 303 is fixed between the glass plate 301 and the light-homogenizing plate 302. The glass plate 301 faces the outside of the light-emitting opening of the casing 1. The light-shading plate 302 is directed toward the inner side of the light exit opening of the casing 1, the honeycomb frame 303 is hollow, and has a plurality of cells 304;

The light 6 emitted from the light-emitting element 5 is emitted through the reflecting surface 4 and the emitting surface of the light-receiving plate 302, and then emitted through the honeycomb grid 304 and the glass plate 301.

In the fill light of the embodiment of the present application, when the light transmission window 3 is a honeycomb panel, the emission surface 7 of the light transmission window 3 is the emission surface of the light diffusion plate 302.

Optionally, in the structure of the honeycomb skeleton in the embodiment of the present application, as shown in FIG. 12 and FIG. 13, the honeycomb skeleton 303 is hollow and has a plurality of cells 304.

The light board 2 is provided with a light-emitting element 5, and the light emitted by the light-emitting element 5 is emitted through the reflecting surface and the emitting surface of the light-homogenizing plate 302. Here, the light-immising plate 302 is used to make the fill light fill light in the form of a surface light source, and the point light source is The surface brightness of the fill light source is reduced by the surface light source. Then, the light of the emitting surface of the light-shading plate 302 is emitted through the cell 304 and the glass plate 301, and the light emitted from the cell 304 is controlled to be within the range that the cell 304 can emit, thereby suppressing the emission of light at a large angle. , reducing the distribution angle of the light emitted by the fill light, reducing the glare intensity, thereby reducing the glare caused by the fill light to the human eye.

As shown, light 14 emitted by a cellular grid 304, the light distribution angle is θ _1, whereas in the prior art, the light emitted by the light homogenizing plate 302, shown in Figure 15, the angle of light distribution is θ _2, It can be seen that θ ₁ is smaller than θ ₂ . Therefore, the fill light provided by the present application can reduce the distribution angle of the light emitted by the fill light, and can reduce the interference of the fill light on the non-capture object, thereby reducing the pair of fill light. The glare caused by the human eye.

16 and FIG. 17, FIG. 16 is a light distribution diagram of a conventional fill light, and FIG. 17 is a light distribution diagram of a fill light according to an embodiment of the present application. By comparing FIG. 16 and FIG. It can be obtained that the area of the light intensity distribution of the light-emitting elements in the spatial direction of the light beam of the existing fill light is higher than that of the light-emitting elements in the light distribution map of the fill light provided by the embodiment of the present application. The area of the strong distribution is large. Therefore, the fill light provided by the present application allows people to walk out of the field of view of the camera, and does not see light, thereby greatly reducing light pollution, thereby reducing the interference of the fill light on the non-capture object.

Optionally, referring to FIG. 11 , in the embodiment of the present application, the fill light further includes: a reflector 15 , wherein the reflector 15 is fixed in the housing 1 .

Here, the reflector 15 is fixed in the housing, and the reflector 15 has a reflecting surface. The inner surface of the housing 1 except the surface where the light board 2 is located and the surface where the honeycomb panel is located is the reflecting surface of the reflector 15, and the reflecting surface The light is reflected back to the uniform plate 302, which reduces the intensity of the light.

The light 6 emitted by the light-emitting element 5 is emitted through the reflecting surface and the emitting surface of the light-shading plate 302, and then emitted through the cell 304 and the glass plate 301, including:

The light 6 emitted from the light-emitting element 5 is emitted via the reflecting surface of the reflector 4 and the emitting surface of the light-shading plate 302, and then emitted through the honeycomb grid 304 and the glass plate 301.

Optionally, referring to FIG. 11 , in the embodiment of the present application, the bottom of the housing 1 is further provided with a heat dissipation base 16 , and the heat dissipation base 16 is fixedly connected to the light board 2 .

Specifically, the heat dissipation base 16 has a heat dissipation function. When the fill light is filled, the light-emitting element generates temperature, and when the fill light is operated for a long time, the temperature generated by the light-emitting element is higher, here, by heat dissipation. The base 16 dissipates the generated high temperature, which can avoid the problem of failure caused by excessive temperature of the fill lamp during operation.

In the embodiment of the present application, the fill light may include the following physical structure. As shown in FIG. 11 , the physical structure of the fill light may include a heat dissipation base 16 , a light board 2 , a reflector 15 , a light level plate 302 , and a honeycomb frame . 303. Housing 1 and glass plate 301.

Optionally, in the application embodiment, the cell 304 is a through hole perpendicular to the honeycomb skeleton 303, and the through hole is hexagonal, or quadrangular, or circular, or elliptical.

Here, according to practical applications and actual needs, the through holes of the cell 304 may be hexagonal, or quadrangular, or circular, or elliptical, and the cells are through holes to allow light to pass through the through holes, thereby suppressing large angles. The light.

In the embodiment of the present application, the ratio of the thickness of the honeycomb panel to the aperture size of the through hole is less than or equal to the field of view tangent of the camera where the fill light is located.

Here, the ratio of the thickness of the honeycomb panel to the aperture size of the through hole may be any value less than or equal to the field of view tangent of the camera where the fill light is located, wherein the ratio of the thickness of the honeycomb panel to the aperture size of the through hole When the angle of view of the camera of the fill light is equal to the tangent of the field of view, the ability to control the light is optimal.

In the embodiment of the present application, the material of the honeycomb skeleton 303 may be an injection molded opaque white plastic or a black light absorbing material.

Here, when the material of the honeycomb skeleton 303 is an injection-molded opaque white plastic, light can be emitted only from the honeycomb grid, and the emission of large-angle light is suppressed. When the material of the honeycomb skeleton 303 is a black light absorbing material, the light of the honeycomb skeleton except for the rest of the honeycomb is absorbed, thereby suppressing the emission of large-angle light.

In the embodiment of the present application, the surface area of the light-homogenizing plate 302 is larger than the surface area of the light-emitting plate 2, and the surface area of the light-emitting element 5 is smaller than the surface area of the light-emitting plate 2.

Specifically, when the surface area of the light-receiving plate 302 is larger than the surface area of the light-emitting plate 2, and the surface area of the light-emitting element 5 is smaller than the surface area of the light-emitting plate 2, the surface area of the light-homogenizing plate 302 is larger than the surface area of the light-emitting element 5, so that the surface area of the light-homogenizing plate 302 is larger than that of the existing one. The surface area of a single LED fill light in the technology reduces the glare intensity by increasing the light-emitting area.

Optionally, in the embodiment of the present application, the material of the light homogenizing plate 302 is a polycarbonate material, or a polymethyl methacrylate material, or a polypropylene material, and the light transmittance of the light homogenizing plate 302 is 40% to 80%.

Specifically, the material of the light-shielding plate 302 may be an optical diffusion material such as polycarbonate (Poly Carbonate, PC), polymethyl methacrylate (PMMA), or polypropylene (PP). It is preferred that the primary transmittance of the light in the light-shading plate 302 is 40% to 60% because the lower the transmittance, the better the optical uniformity.

In the existing method for reducing the glare intensity of the fill light to the human eye, the control ability of the light emitted by the fill light is relatively weak, that is, after the light is emitted, the angle of the light distribution is relatively large, so that when the person has gone out After the camera's field of view, it still produces intense glare to the human eye.

In view of this, in the second embodiment of the present application, referring to FIG. 18, a fill light is provided, including: a housing 1 having a light exit opening, a light board 2 located in the housing 1, and located a honeycomb panel 17 of the light exit of the housing 1;

The light board 2 is located at the bottom or the side of the casing 1, and the inner surface of the casing 1 except the surface where the light board 2 is located and the surface where the honeycomb board 17 is located is a reflecting surface;

The honeycomb panel 17 includes a glass plate 301, a light-shading plate 302 and a honeycomb skeleton 303. The honeycomb frame 030 is fixed between the glass plate 301 and the light-homogenizing plate 302. The glass plate 301 faces the outer side of the light-emitting port of the casing 1, and the light-homogenizing plate 302 faces the shell. The inside of the light exit of the body 1, the honeycomb skeleton 303 is hollow, having a plurality of cells 304;

The light board 2 is provided with a light-emitting element 5, and the light emitted by the light-emitting element 5 is emitted through the reflecting surface and the emitting surface of the light-shading plate 302, and then emitted through the cell 304 and the glass plate 301;

The surface on which the light panel 2 is located and the emitting surface of the light-shading plate 302 are in a parallel relationship or an intersecting relationship.

Alternatively, the structure of the honeycomb skeleton in the fill light, as shown in FIGS. 12 and 13, the honeycomb skeleton 303 is hollow and has a plurality of cells 304.

It can be seen that the second embodiment of the present application provides a fill light comprising: a housing provided with a light exit, a light board located in the housing, and a honeycomb panel located at a light exit of the housing; the light board is located in the shell The bottom or side of the body, the inner surface of the casing except the surface on which the light board is located and the surface on which the honeycomb panel is located is a reflective surface; the honeycomb panel comprises: a glass plate, a light homogenizing plate and a honeycomb skeleton, and the honeycomb skeleton is fixed on the glass plate and the light homogenizing plate Between the glass plate facing the outer side of the light exit opening of the housing, the light diffusing plate is facing the inner side of the light exit opening of the housing, the honeycomb skeleton is hollow, and has a plurality of honeycomb cells; the light board is provided with a light emitting element, and the light emitted by the light emitting element After being emitted through the reflecting surface and the emitting surface of the light-shading plate, it is emitted through the honeycomb grid and the glass plate; the surface on which the light board is located and the emitting surface are in a parallel relationship or an intersecting relationship. The light emitted by the light-emitting element is emitted through the reflecting surface and the emitting surface of the light-shading plate, and then emitted through the cell and the glass plate to control the light within the range that the cell can emit, thereby suppressing the light of a large angle. The emission reduces the distribution angle of the light emitted by the fill light, thereby reducing the interference of the fill light on the non-capture object.

In the fill light provided by the second embodiment of the present application, the fill light further includes a reflector 15 fixed in the casing 1.

Optionally, referring to FIG. 11 , in the fill light provided by the second embodiment of the present application, the bottom of the housing 1 is further provided with a heat dissipation base 16 , and the heat dissipation base 16 is fixedly connected to the light board 2 .

Optionally, in the fill light provided by the second embodiment of the present application, the material of the honeycomb skeleton 303 may be an injection molded opaque white plastic or a black light absorbing material.

Optionally, in the fill light provided in the second embodiment of the present application, the surface brightness parameter of the glass plate 6 is 30,000 to 100,000 candelas per square meter.

Optionally, in the fill light provided by the second embodiment of the present application, the material of the light homogenizing plate 302 is polycarbonate material, or polymethyl methacrylate material, or polypropylene material, and the light transmittance of the light homogenizing plate 302 The rate is 40% to 80%.

Specifically, the material of the light-shielding plate 302 may be an optical diffusion material such as polycarbonate (Poly Carbonate, PC), polymethyl methacrylate (PMMA), or polypropylene (PP). It is preferred that the primary transmittance of the light in the light-shading plate 302 is 40% to 80% because the lower the transmittance, the better the optical uniformity.

Optionally, in the fill light provided by the second embodiment of the present application, the emitting surface of the light homogenizing plate 302 is provided with a reflective paint.

Optionally, in the fill light provided by the second embodiment of the present application, the light board 2 is provided with a plurality of light-emitting elements 5;

The plurality of light-emitting elements 5 are evenly arranged on the light board 2, and the layout of the plurality of light-emitting elements 5 on the light board 2 is a one-column layout or a multi-column layout.

Specifically, as shown in FIG. 2( a ) and FIG. 2( b ), the light board 2 may be provided with a plurality of light emitting elements 5 , and the plurality of light emitting elements 5 may be evenly arranged on the light board 2 , wherein 2(a) The layout of the plurality of light-emitting elements 5 on the light board 2 is a one-row layout. In FIG. 2(b), the layout of the plurality of light-emitting elements 5 on the light board 2 has a three-column layout, and may be other The column layout is not listed here, so that the light emitted from the light-emitting element 5 is relatively uniform.

Optionally, in the fill light provided by the second embodiment of the present application, when the layout of the plurality of light-emitting elements 5 on the light board 2 is a column layout, the vertical distance from the emitting surface of the light-immising plate 302 to the light-emitting element 5 The ratio of the spacing to the light-emitting element 5 is greater than 1.5.

When the layout of the plurality of light-emitting elements 5 on the lamp panel 2 is a multi-column layout, and the lateral pitch and the longitudinal pitch between the light-emitting elements 5 are the same, the vertical distance of the emission surface of the light-homogenizing plate 302 to the light-emitting element 5 and the light-emitting element 5 The ratio between the spacings is greater than 1.5.

When the layout of the plurality of light-emitting elements 5 on the light board 2 is a multi-column layout, and the lateral pitch and the longitudinal pitch between the light-emitting elements 5 are different, the vertical distance from the emitting surface of the light-immising plate 302 to the light-emitting element 5, and the light-emitting The ratio of the lateral spacing between the elements 5 to the larger of the longitudinal spacing is greater than 1.5.

Specifically, as shown in FIG. 19, when a plurality of light-emitting elements 5 are uniformly arranged on the lamp panel, the pitch S2 between the light-emitting elements 5 can be calculated, and at the same time, the light-emitting elements 5 can be calculated to the emission surface 5 of the light-shielding plate 302. The vertical distance S1, when the ratio of the vertical distance S1 of the emitting surface of the light-homogenizing plate 302 to the light-emitting element 5 and the distance S2 of the light-emitting element 5 is greater than 1.5, the light emitted by the light-emitting element 5 makes the fill light effect of the fill light optimal. . It should be noted that when the layout of the plurality of light-emitting elements 5 on the light board 2 is a column layout, S2 is the spacing between the light-emitting elements 5 arranged uniformly in this row; when the plurality of light-emitting elements 5 are on the light board 2 The layout is a multi-column layout, and when the lateral spacing and the longitudinal spacing between the light-emitting elements 5 are the same, S2 is the spacing between the plurality of uniformly arranged light-emitting elements 5, for example, may be the lateral direction in FIG. 2(d) a spacing l2 or a longitudinal spacing l1; when the layout of the plurality of light-emitting elements 5 on the light board 2 is a multi-column layout, and the lateral spacing and the longitudinal spacing between the light-emitting elements 5 are different, S2 is the lateral direction between the light-emitting elements 5 The larger of the pitch and the longitudinal pitch may be the lateral pitch l2 in Fig. 2(c).

Optionally, in the fill light provided by the second embodiment of the present application, when the surface on which the light board 2 is located is in parallel relationship with the emitting surface of the light homogenizing plate 302, the reflecting surface 4 is a free curved surface.

Here, the reflecting surface may be any curved surface, and the reflecting surface is configured to receive the light emitted by the light emitting element, and reflect the received light and transmit it to the emitting surface of the light homogenizing plate, so that the emitting surface emits light, and the light passes through the honeycomb And the glass plate to achieve the effect of fill light.

When the surface on which the lamp panel 2 is located is in a relationship with the emitting surface of the light-homogenizing plate 302, the reflecting surface 4 is a paraboloid.

Here, when the surface on which the light board is located is in a relationship with the emitting surface, the reflecting surface is a paraboloid, so that the emitted light is more uniform.

Optionally, in the fill light provided by the second embodiment of the present application, the light-emitting element 5 is provided with a lens 8 which is a hyperbolic lens, and the lens 8 includes a lens light-incident surface and a lens light-emitting surface.

Specifically, as shown in FIG. 6, the light-emitting element 5 is provided with a lens 8 including a lens light-incident surface and a lens light-emitting surface, and the lens light-incident surface is for receiving light emitted by the light-emitting element, and the lens light-emitting surface is used for The light received by the lens entering the light surface is emitted, and the large-angle uniform light is realized by optimizing the lens surface shape. For the secondary lens applied to the light-emitting element, a high-angle uniformization design can improve the uniformity of the light on the emitting surface of the uniform plate. Further, the light-emitting element 5 provided with the lens 8 is applied to a fill light, and its structure is as shown in FIG.

Optionally, in the fill light provided by the second embodiment of the present application, when the surface of the light board 2 and the emitting surface of the light-shielding plate 302 are in a parallel relationship, the reflecting surface 4 is aspherical.

Here, the reflecting surface 4 may be an aspherical surface, so that the reflection effect of the light passing through the reflecting surface is better.

Optionally, in the fill light provided by the second embodiment of the present application, the material of the reflective surface 4 is a polycarbonate material.

Here, the material of the reflecting surface 4 is a polycarbonate material, which may be a high reflectivity polycarbonate material or other material coated with a high reflectivity coating, and is generally metal or plastic.

Optionally, in the fill light provided by the second embodiment of the present application, the reflective surface of the housing 1 is provided with a reflective film or a reflective paint or a diffuse reflection layer.

Here, the reflective film or the reflective paint or the diffuse reflection layer functions to allow the light to be reflected, so that the light on the lamp plate is reflected by the reflective surface to the light-shading plate, thereby reducing the surface brightness of the fill light source and increasing The apparent area of the fill light in the direction of the observer's eyes reduces the glare intensity.

Optionally, in the fill light provided by the second embodiment of the present application, the light emitting element 5 may be a light emitting diode LED lamp.

Compared with incandescent bulbs and xenon lamps, LEDs have the following characteristics: low operating voltage (some volts only a few volts); low operating current (some can only emit light at a few milliamps); Good impact and seismic performance, high reliability and long life; the intensity of the light can be easily modulated by the intensity of the current passing through the modulation. Due to these characteristics, LEDs are used as light sources in some optoelectronic control devices.

Optionally, in the fill light provided in the second embodiment of the present application, the emitted light 6 emitted by the light-emitting element 5 is emitted through the reflecting surface 4 and the emitting surface of the light-shading plate 302, and then through the honeycomb grid 304 and The glass plate 301 is emitted such that the ratio of the minimum brightness value to the maximum brightness value at each point on the surface of the glass plate 301 is greater than or equal to 70%.

Optionally, the fill light provided in the second embodiment of the present application is applied to a camera, and the camera 9 and the fill light 10 are detachably connected.

Specifically, on the camera 9, using the fill light 10 in the embodiment of the present application, the camera 9 is supplemented with light, and while reducing the surface brightness of the light source, the light is controlled within a range that the cell can emit, and the light is suppressed. The emission of light at a large angle reduces the distribution angle of the light emitted by the fill light, thereby reducing the interference of the fill light on the non-grabbing object. According to the actual application, the entire fill light 10 can be combined with the camera 9 in the upper and lower manner. As shown in FIG. 9( a ), the fill light 10 can be combined with the camera 9 and can be fixed to the camera by screws or buckles. Below. The fill light provided by the embodiment of the present invention can reduce the surface brightness of the light source while suppressing the emission of the light at a large angle, and reduce the distribution angle of the light emitted by the fill light, thereby reducing the effect of the fill light on the non-capture object. Interference.

9(b) is a side view of the fill light provided in the camera according to the embodiment of the present application; FIG. 9(c) is a rear view of the fill light applied in the camera according to the embodiment of the present application; FIG. The structure of the camera and the fill light provided in Fig. 9(b) and Fig. 9(c) are the same.

The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc., which are made within the spirit and principles of the present application, should be included in the present application. Within the scope of protection.

Claims

A fill light, comprising: a housing (1), and a light board (2) located in the housing (1); the housing has a light-transmitting window (3);

The light board (2) is located at the bottom or side of the casing (1), and the surface of the casing (1) except the surface of the light board (2) and the emitting surface of the light-transmitting window (3) The inner surface other than (7) is a reflecting surface (4);

a light-emitting element (5) is disposed on the light board (2), and the light (6) emitted by the light-emitting element (5) is emitted through the reflective surface (4) and the emitting surface (7) to The surface brightness parameter of the light transmission window (3) is 30,000 to 100,000 candelas per square meter;

The surface on which the light panel (2) is located and the emitting surface (7) are in a parallel relationship or an intersecting relationship.
The fill light according to claim 1, characterized in that the surface area of the light transmission window (3) is larger than the surface area of the light board (2), and the surface area of the light emitting element (5) is smaller than the light board (2) Surface area.
The fill light according to claim 1, characterized in that the emitted light (6) of the light-emitting element (5) is emitted via the reflecting surface (4) and the emitting surface (7) to The ratio of the minimum brightness value to the maximum brightness value of each point on the surface of the light transmission window (3) is greater than or equal to 70%.
The fill light according to claim 1, wherein the light transmission window (3) is a polycarbonate material, or a polymethyl methacrylate material, or a polypropylene material, and the light transmission window (3) The light transmittance is 40% to 80%.
A fill light according to claim 1, characterized in that the emitting surface (7) is provided with a reflective coating.
The fill light according to claim 1, characterized in that the light board (2) is provided with a plurality of light-emitting elements (5);

The plurality of light emitting elements (5) are evenly arranged on the light board (2), and the layout of the plurality of light emitting elements (5) on the light board (2) is a one-row layout or a multi-column layout.
The fill light according to claim 6, characterized in that, when the layout of the plurality of light-emitting elements (5) on the light board (2) is in a column layout, the light-transmitting window (3) The ratio of the vertical distance of the emitting surface (7) to the light-emitting element (5) to the spacing between the light-emitting elements (5) is greater than 1.5;

When the layout of the plurality of light emitting elements (5) on the light board (2) is a multi-column layout, and the lateral spacing and the longitudinal spacing between the light emitting elements (5) are the same, the light transmission window The ratio of the vertical distance of the emitting surface (7) of the emitting surface (7) to the light-emitting element (5) to the spacing between the light-emitting elements (5) is greater than 1.5;

When the layout of the plurality of light emitting elements (5) on the light board (2) is a multi-column layout, and the lateral spacing and the longitudinal spacing between the light emitting elements (5) are different, the light transmission The vertical distance of the emitting face (7) of the window (3) to the illuminating element (5) is greater than 1.5 between the lateral spacing and the larger spacing of the longitudinal spacing between the illuminating elements (5).
The fill light according to claim 1, characterized in that, when the surface on which the light panel (2) is located is in parallel relationship with the emitting surface (7), the reflecting surface (4) is a free curved surface;

When the face on which the lamp panel (2) is located is in an intersecting relationship with the emitting surface (7), the reflecting surface (4) is a paraboloid.
The fill light according to claim 1, characterized in that the light-emitting element (5) is provided with a lens (8), the lens (8) is a hyperbolic lens, and the lens (8) comprises a lens entrance. Glossy surface and lens exit surface.
The fill light according to claim 1, characterized in that, when the face on which the lamp plate (2) is located is in parallel relationship with the emitting face (7), the reflecting surface (4) is aspherical.
A fill light according to claim 1, characterized in that the reflecting surface (4) is a polycarbonate material.
A fill light according to claim 1, characterized in that the reflecting surface (4) of the casing (1) is provided with a reflective film or a reflective lacquer or a diffuse reflection layer.
The fill light according to any one of claims 1 to 12, characterized in that the light-emitting element (5) is a light-emitting diode LED lamp.
The fill light according to claim 1, wherein the light transmission window (3) is a honeycomb panel;

The honeycomb panel comprises: a glass plate (301), a light homogenizing plate (302) and a honeycomb skeleton (303), and the honeycomb skeleton (303) is fixed between the glass plate (301) and the light homogenizing plate (302) The glass plate (301) faces the outer side of the light exit opening of the casing (1), and the light homogenizing plate (302) faces the inner side of the light exit opening of the casing (1), the honeycomb skeleton (303) Is hollow, having a plurality of cells (304);

The light (6) emitted by the light-emitting element (5) is emitted through the reflecting surface (4) and the emitting surface of the light-shading plate (302), and then through the honeycomb cell (304) and the glass plate ( 301) Issued.
The fill light according to claim 14, wherein the fill light further comprises: a reflector (15), the reflector (15) being fixed in the casing (1);

The light emitted by the light-emitting element (5) is emitted through the reflecting surface of the reflector (15) and the emitting surface of the light-shading plate (302), and then through the honeycomb cell (304) and the glass plate ( 301) Issued.
The fill light according to claim 14 or 15, characterized in that the bottom of the casing (1) is further provided with a heat dissipation base (16), the heat dissipation base (16) and the light board (2) Fixed connection.
The fill light according to claim 14, wherein the honeycomb grid (304) is a through hole corresponding to the honeycomb skeleton (303), and the through hole is hexagonal, quadrangular, or circular. Shape, or elliptical.
The fill light according to claim 17, wherein the ratio of the thickness of the honeycomb panel to the aperture size of the through hole is less than or equal to the field of view tangent of the camera where the fill light is located.
The fill light according to claim 14, characterized in that the material of the honeycomb skeleton (303) is an injection molded opaque white plastic or a black light absorbing material.
The fill light according to claim 14, wherein the surface area of the light homogenizing plate (302) is larger than the surface area of the light plate (2), and the surface area of the light emitting element (5) is smaller than the light plate ( 2) Surface area.
The fill light according to claim 14, wherein the material of the light homogenizing plate (302) is a polycarbonate material, or a polymethyl methacrylate material, or a polypropylene material, and the light homogenizing plate (302) The light transmittance is 40% to 80%.
A camera, characterized in that the camera (9) comprises a fill light (10) according to any one of claims 1 to 21, the camera (9) and the fill light (10) For detachable connection.