Infrared light supplement lamp module and infrared camera

Abstract

The utility model discloses an infrared light supplement lamp module and an infrared camera. The infrared light supplement lamp module comprises a base, at least two groups of infrared lamp assemblies and a bonding pad assembly, the at least two infrared lamp assemblies are arranged on the surface of the base at intervals; the bonding pad assembly is arranged at the bottom of the base; each infrared lamp assembly comprises an LED light-emitting tube and a light-transmitting mirror, the LED light-emitting tube is electrically connected with the bonding pad assembly, and the light-transmitting mirror covers the LED light-emitting tube; each light-transmitting mirror is provided with a first light-emitting surface, a second light-emitting surface, a third light-emitting surface and a fourth light-emitting surface; the first light-emitting surface is connected with the second light-emitting surface, the third light-emitting surface and the fourth light-emitting surface, the second light-emitting surface is provided with a first connecting end and a second connecting end, one end of the third light-emitting surface is connected with the first connecting end, and one end of the fourth light-emitting surface is connected with the second connecting end. The area of the first light-emitting surface is larger than the areas of the second light-emitting surface, the third light-emitting surface and the fourth light-emitting surface, so that most light of the LED light-emitting tube is emitted from the first light-emitting surface.

Description

TECHNICAL FIELD

[0001] The utility model relates to infrared light supplementing lamp technical field, specifically, it relates to a kind of infrared light supplementing lamp module and infrared camera. BACKGROUND

[0002] Infrared light supplementing technology is widely used in various face recognition devices, such as self-service copiers, intelligent visual door locks, face recognition punch machines, cameras, etc. Self-service copiers, intelligent visual door locks, face recognition punch machines and cameras generally have infrared light supplementing lamps and infrared cameras. The infrared light supplementing lamp cooperates with the infrared camera. When the infrared camera captures a face image, the infrared light supplementing lamp can provide light for the infrared camera in dark or low light conditions.

[0003] Although infrared light supplementing technology has significant advantages in face recognition, there are still some deficiencies in actual application. For example, when using an intelligent visual door lock for face recognition, the ambient light on the side near the window is usually stronger than on the other side. Ordinary infrared LEDs cannot automatically adjust according to the strength of the ambient light, which can easily cause overexposure on the side near the window during face recognition, resulting in abnormal recognition. SUMMARY

[0004] To overcome the deficiencies of the prior art, an infrared light supplementing lamp module and an infrared light supplementing lamp are provided.

[0005] To achieve the above-mentioned purpose, the utility model provides an infrared light supplementing lamp module, which comprises a base, at least two groups of infrared lamp assemblies and a solder pad assembly. The at least two infrared lamp assemblies are arranged on the surface of the base. The solder pad assembly is arranged at the bottom of the base. Each infrared lamp assembly comprises an LED light pipe and a light-transmitting lens. The LED light pipe is electrically connected to the solder pad assembly, and the light-transmitting lens covers the LED light pipe. Each light-transmitting lens has a first light-emitting surface, a second light-emitting surface, a third light-emitting surface and a fourth light-emitting surface. The first light-emitting surface is connected to the second, third and fourth light-emitting surfaces, respectively. The second light-emitting surface has a first connecting end and a second connecting end. One end of the third light-emitting surface is connected to the first connecting end, and one end of the fourth light-emitting surface is connected to the second connecting end. The area of the first light-emitting surface is larger than that of the second, third and fourth light-emitting surfaces.

[0006] According to an embodiment of the utility model, the solder pad assembly comprises at least two solder pad groups, and each LED light pipe is electrically connected to a solder pad group.

[0007] According to an embodiment of the utility model, the directions of the at least two first light-emitting surfaces are consistent.

[0008] According to an embodiment of the utility model, the light-transmitting lens is made of epoxy resin material.

[0009] According to an embodiment of the present application, the refractive index of the light-transmitting mirror is 1.56.

[0010] According to an embodiment of the present application, the first light-out surface is an irregular arc surface.

[0011] The present application also provides an infrared camera comprising the infrared light supplementing lamp module.

[0012] The present application has the advantages that the light-transmitting mirror cover is arranged on the LED light-emitting tube, and the light of the LED light-emitting tube passes through the light-transmitting mirror and then goes out. The light-transmitting mirror has a first light-out surface, a second light-out surface, a third light-out surface and a fourth light-out surface connected with each other, and the area of the first light-out surface is larger than the area of the second light-out surface, the third light-out surface and the fourth light-out surface, respectively. Therefore, when the LED light-emitting tube emits light, most of the light of the LED light-emitting tube is emitted from the first light-out surface. In use, the first light-out surface of the infrared lamp assembly is directed to the side with weak ambient light, and the second light-out surface, the third light-out surface and the fourth light-out surface are directed to the side with strong ambient light. In this way, in the use scene where the ambient light is not balanced, the infrared light supplementing lamp assembly can realize balanced light supplementing, and the phenomenon of overexposure is avoided, and the success probability of identification is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0014] Figure 1 Fig. 1 is a perspective view of the infrared light supplementing lamp module in the embodiment;

[0015] Figure 2 Fig. 2 is a top view of the infrared light supplementing lamp module in the embodiment;

[0016] Figure 3 Fig. 3 is a bottom view of the infrared light supplementing lamp module in the embodiment;

[0017] Figure 4 Fig. 4 is a sectional view of the infrared light supplementing lamp module along the A-A' axis in the embodiment.

[0018] Explanation of Reference Signs

[0019] 1 - base; 2 - infrared lamp assembly; 21 - LED light-emitting tube; 22 - light-transmitting mirror; 221 - first light-out surface; 222 - second light-out surface; 223 - third light-out surface; 224 - fourth light-out surface; 3 - solder pad assembly; 31 - solder pad. DETAILED DESCRIPTION

[0020] The embodiments of the present application will be described herein below with reference to drawings. Numerous specific details will be set forth in the following description in order to provide a thorough understanding. However, it will be appreciated that these specific details are not intended to limit the present application. In other words, in some embodiments of the present application, one or more of these specific details can not be used. Also, to simplify the description, some conventional and well-understood components, circuits, and techniques are not described in detail.

[0021] In addition, the terms "first", "second", and the like, as used in the description of the application, are used for descriptive purposes and are not to be construed as indicating or implying a required or critical sequence of elements or steps. They are used to identify components of the present application in order to distinguish the components from one another. It is not necessary that a component be called "first" or "second" in the description of the application. The terms "first", "second", and the like, are used to distinguish the components from one another, and are not used to indicate or imply a relative importance of the components. Thus, a feature defined with "first" or "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of a person skilled in the art. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0022] Embodiment one

[0023] Please refer to Figures 1-2 , Figure 1 is a perspective view of an infrared light supplement lamp module, Figure 2 is a top view of an infrared light supplement lamp module. The present embodiment provides an infrared light supplement lamp module, which includes a base 1, at least two groups of infrared lamp assemblies 2, and a solder pad assembly 3. The at least two groups of infrared lamp assemblies 2 are arranged on the upper surface of the base 1. The solder pad assembly 3 is arranged on the bottom surface of the base 1, and each group of infrared lamp assemblies 2 is electrically connected to the solder pad assembly 3.

[0024] The infrared lamp assembly 2 comprises an LED light pipe 21 and a light-transmitting lens 22. The LED light pipe 21 is electrically connected with the pad assembly 3, and the light-transmitting lens 22 covers the surface of the LED light pipe 21. The light-transmitting lens 22 is used to increase the light-transmitting rate of the LED light pipe 21 and change the light type emitted by the LED light pipe 21. The light-transmitting lens 22 has a first light exit surface 221, a second light exit surface 222, a third light exit surface 223 and a fourth light exit surface 224. The first light exit surface 221 is connected with the second light exit surface 222, the third light exit surface 223 and the fourth light exit surface 224 respectively. The second light exit surface 222 has a first connecting end 2221 and a second connecting end 2222. One end of the third light exit surface 223 is connected with the first connecting end 2221, and one end of the fourth light exit surface 224 is connected with the second connecting end 2222. In addition, the area of the first light exit surface 221 is larger than the areas of the second light exit surface 222, the third light exit surface 223 and the fourth light exit surface 224, so that most of the light of the LED light is emitted from the first light exit surface 221.

[0025] In this example, the second light exit surface 222 is connected with one end of the first light exit surface 221, and the third light exit surface 223 and the fourth light exit surface 224 are arranged on opposite sides of the first light exit surface 221. The second light exit surface 222 has the first connecting end 2221 and the second connecting end 2222. One end of the third light exit surface 223 is connected with the first connecting end 2221, and the fourth light exit surface 224 is connected with the second connecting end 2222, so that the first light exit surface 221, the second light exit surface 222, the third light exit surface 223 and the fourth light exit surface 224 are connected with each other to form the light-transmitting lens 22. The third light exit surface 223 and the fourth light exit surface 224 have the same shape.

[0026] When the LED light pipe 21 emits light, the light of the LED light pipe 21 passes through the light-transmitting lens 22, and most of the light passes through the first light exit surface 221, so that the light of the infrared lamp assembly 2 is concentrated and emitted from the first light exit surface 221. The light emission amount of the first light exit surface 221 is higher, and the light emission amounts of the second light exit surface 222, the third light exit surface 223 and the fourth light exit surface 224 are lower. In use, the first light exit surface 221 of the infrared lamp assembly 2 is directed to the side with weak ambient light, and the second light exit surface 222, the third light exit surface 223 and the fourth light exit surface 224 are directed to the side with strong ambient light. In this way, in the use scene with uneven ambient light, the infrared light supplement lamp assembly realizes balanced light supplement and avoids overexposure, effectively improving the success probability of recognition.

[0027] Further, at least two infrared lamp assemblies 2 are arranged on the base 1, and the installation directions of the at least two infrared lamp assemblies 2 are the same, so that the directions of the first light exit surfaces 221 of the at least two infrared lamp assemblies 2 are consistent, and the light supplement directions of the at least two infrared lamp assemblies 2 are the same.

[0028] Please refer toFigure 3 , Figure 3 is a schematic view of the bottom of the infrared light supplementing lamp module. The pad assembly 3 comprises at least two pad groups 31, and each pad group 31 is connected with an LED light pipe 21. When the infrared light supplementing lamp module is connected with the external PCB, each pad group 31 is welded with the PCB. By controlling the current of each pad group 31, the brightness of the LED light pipe 21 connected with the pad can be adjusted. The greater the input current, the brighter the brightness of the LED light pipe 21, and the smaller the input current, the smaller the brightness of the LED light pipe 21. In this way, by controlling the input current of each pad group, the brightness of each infrared lamp assembly 2 is adjusted separately.

[0029] In actual use scenarios, when the light supplementing lamp module is in an environment with strong light and dark contrast, the brightness of each infrared lamp assembly 2 can be controlled separately to balance the light of the environment. Specifically, the brightness of the infrared lamp assembly 2 with lower brightness is increased, and the brightness of the infrared lamp assembly 2 with higher brightness is decreased, so that the brightness is balanced, and the overexposure caused by large brightness difference is avoided.

[0030] Please refer to Figure 1 and Figure 4 , Figure 4 is a sectional view of the infrared light supplementing lamp module along the A-A' axis. Further, the first light-out surface 221 is an irregular arc surface. The light emitted by the LED light pipe 21 is refracted into parallel light after passing through the arc-shaped first light-out surface 221, so that the light is concentrated and the brightness is increased, which can effectively improve the utilization rate of light.

[0031] Further, the light-transmitting lens 22 is made of epoxy resin material. Since the epoxy resin material has good refractive index, when in use, the light emitted by the LED light pipe 21 is refracted through the light-transmitting lens 22 and then emitted, so that the light emitted by the LED light pipe 21 can be emitted farther, effectively improving the light-emitting efficiency of the infrared light supplementing lamp. In addition, the silica gel material has the characteristics of high temperature resistance and aging resistance, which can prevent high temperature from damaging the infrared light supplementing lamp during use, effectively improving the service life of the infrared light supplementing lamp.

[0032] Further, the refractive index of the light-transmitting lens 22 is 1.56.

[0033] Example Two

[0034] The infrared light supplement module of the embodiment is different from the first embodiment in that the infrared light supplement module includes three groups of infrared lamp assemblies 2.

[0035] In addition, in the actual application scenario, the three groups of LED light tubes 21 are arranged on the base 1, and each group of LED light tubes 21 is covered with a light-transmitting mirror 22. The light emitted by each group of LED light tubes 21 is emitted through the light-transmitting mirror 22, so that the light intensity diffusion angle (25%) of the infrared lamp assemblies 2 on the left and right sides is greater than 130°, the light intensity diffusion angle (25%) of the infrared lamp assembly 2 in the middle is greater than 90°, and when the three groups of infrared lamp assemblies 2 are turned on at the same time, the light intensity diffusion angle (25%) of the infrared light supplement lamp module is greater than 130°.

[0036] The application further provides an infrared camera including the above-described infrared light supplement lamp module.

[0037] In summary, at least two infrared lamp assemblies 2 are arranged on the base 1, and the infrared lamp assembly 2 includes an LED light tube 21 and a light-transmitting mirror 22. The LED light tube 21 is electrically connected to the pad assembly 3 at the bottom of the base 1, and the light-transmitting mirror 22 covers the LED light tube 21. The light-transmitting mirror 22 has a first light-emitting surface 221, a second light-emitting surface 222, a third light-emitting surface 223, and a fourth light-emitting surface 224 connected to each other, and the area of the first light-emitting surface 221 is greater than the areas of the second light-emitting surface 222, the third light-emitting surface 223, and the fourth light-emitting surface 224, so that most of the light emitted by the LED light tube 21 is emitted from the first light-emitting surface 221.

[0038] The above only describes the embodiments of the present application and is not used to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the scope of the claims of the present application.

Claims

1. An infrared light supplementing lamp module, characterized in that, The application relates to an infrared light supplementing lamp module, which comprises a base (1), at least two groups of infrared lamp assemblies (2) and a solder pad assembly (3); the at least two groups of infrared lamp assemblies (2) are arranged on the surface of the base (1) at intervals; the solder pad assembly (3) is arranged at the bottom of the base (1); each infrared lamp assembly (2) comprises an LED light emitting tube (21) and a light transmission lens (22); the LED light emitting tube (21) is electrically connected with the solder pad assembly (3); the light transmission lens (22) covers the LED light emitting tube (21); each light transmission lens (22) has a first light emitting surface (221), a second light emitting surface (222), a third light emitting surface (223) and a fourth light emitting surface (224); the first light emitting surface (221) is connected with the second light emitting surface (222), the third light emitting surface (223) and the fourth light emitting surface (224) respectively; the second light emitting surface (222) has a first connecting end (2221) and a second connecting end (2222); one end of the third light emitting surface (223) is connected with the first connecting end (2221); one end of the fourth light emitting surface (224) is connected with the second connecting end (2222); the area of the first light emitting surface (221) is larger than that of the second light emitting surface (222), the third light emitting surface (223) and the fourth light emitting surface (224). The solder pad assembly (3) comprises at least two solder pad groups (31), and each LED light emitting tube (21) is electrically connected with one solder pad group (31).

2. The infrared light supplement lamp module of claim 1, wherein, The directions of the at least two first light emitting surfaces (221) are consistent. 3.The infrared light supplement lamp module according to claim 1, characterized in that, The light transmission lens (22) is made of epoxy resin.

4. The infrared light supplement lamp module of claim 1, wherein, The refractive index of the light transmission lens (22) is 1.

56.

5. The infrared light supplement lamp module of claim 1, wherein, The first light emitting surface (221) is an irregular arc surface. 6.The infrared light supplement lamp module according to claim 1, characterized in that, The application further discloses an infrared light supplementing lamp module.

7. An infrared camera, characterized by The application further discloses an infrared light supplementing lamp module.

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