WO2017008693A1

WO2017008693A1 - Camera device and protecting cover thereof

Info

Publication number: WO2017008693A1
Application number: PCT/CN2016/089368
Authority: WO
Inventors: 关宏杰; 叶展; 颜财盛
Original assignee: 杭州海康威视数字技术股份有限公司
Priority date: 2015-07-14
Filing date: 2016-07-08
Publication date: 2017-01-19

Abstract

Disclosed are a camera device (10) and a protecting cover (20) thereof. The protecting cover (20) comprises a transparent cover (25) and a light shading strip. The light shading strip extends on the transparent cover (25) and divides the transparent cover (25) into an imaging region (21) and an infrared-transmissive region (22) to prevent light from being reflected to the imaging region (21) from the infrared-transmissive region (22). Therefore, after the infrared light emitted from an infrared lamp (50) radiates on the infrared-transmissive region (22), the infrared light offset to the imaging region (21) can be prevented to some extent by means of the light shading strip, so as to reduce or even eliminate the influence of the infrared light on the imaging by a camera (4), and in turn improve the quality of the image shot with the camera device (10).

Description

Camera device and protective cover thereof

The present application claims priority to Chinese Patent Application No. 201520510625.2, entitled "Camera Device and Protective Cover", filed on July 14, 2015, the entire contents of which is incorporated herein by reference. The application also claims priority to Chinese Patent Application No. 201620200299.X, entitled "Infrared Camera", filed on March 15, 2016, the entire contents of which is incorporated herein by reference.

Technical field

The present application relates to the field of video surveillance, and in particular to a camera device and a protective cover thereof.

Background technique

As shown in FIG. 1, the figure is a full-sectional schematic view of a conventional hemispherical camera.

The existing dome camera 1 includes a camera assembly and a protective cover 2 that houses the camera assembly. The camera assembly includes a camera 3 facing the outside of a lens (not shown), a blind ring 4 fitted to the camera 3, and a plurality of night vision monitoring infrared lamps 5 distributed around the camera 3. The protective cover 2 has a hemispherical thin shell structure, and the protective cover 2 has a uniform wall thickness and is made of a transparent material.

In the night, the night vision monitoring infrared lamp 5 emits infrared light, and the camera 3 collects images at night. The hood 4 can block part of the infrared light from directly entering the lens of the camera 3. However, since the protective cover 2 has a certain thickness, the inner and outer surfaces of the protective cover 2 have a certain reflectance for infrared light. Part of the infrared light is incident into the wall of the protective cover 2, is reflected multiple times in the wall of the protective cover 2, is then reflected from the outer surface of the transparent cover 2 into the lens, and finally enters an image sensor (not shown). This portion of the infrared light causes the image sensor to be whitened. In particular, when there are stains or dust on the lens, the blushing defect will be magnified, and the image sensor will have obvious white spots at the stain or dust phenomenon, which greatly reduces the image quality.

Summary of the invention

Based on the above problems, the present application discloses a protective cover applied to an image pickup device. The transparent cover of the protective cover is provided with a light shielding tape. When the infrared light emitted by the infrared light is irradiated in the infrared transmitting region, the light shielding tape will block to some extent. Infrared light is strung to the imaging area, thereby reducing even to some extent Eliminate the influence of infrared light on the lens imaging, and thus improve the quality of the image captured by the camera. The technical solutions are as follows:

In one aspect, the present application provides a protective cover for an image pickup apparatus, the protective cover including a transparent cover and a light shielding tape, the light shielding tape extending on the transparent cover, and separating the transparent cover into an imaging area And an infrared permeable region to block light from being reflected by the infrared permeable region to the imaging region.

Optionally, the light shielding tape has a U shape, and both ends extend to an edge of the transparent cover.

Optionally, the transparent cover is a hemispherical casing, and a central portion of the light shielding tape is adjacent to a top end of the transparent cover.

In an embodiment of the present application, the transparent cover includes the imaging area and the infrared transmissive area spliced together, and the light shielding tape is a light shielding embedded in a seam of the imaging area and the infrared permeable area. article.

Optionally, the light shielding strip is a sheet structure, and an outer surface of the light shielding strip is flush with an outer surface of the transparent cover.

Optionally, the thickness of the light shielding strip is greater than the thickness of the transparent cover.

Optionally, the visor strip is further provided with a rib that fits the inner surface of the transparent cover in the width direction.

Optionally, the ribs are bonded to the transparent cover.

In an embodiment of the present application, a groove is disposed on an outer surface of the transparent cover, and the light shielding tape includes a light shielding coating disposed in the groove.

In an embodiment of the present application, the outer surface of the transparent cover is provided with a groove, and the light shielding tape is a frosted layer of the outer surface of the groove.

In an embodiment of the present application, the imaging area and the infrared transmissive area are a split injection molding structure, and the light shielding strip is a connection gap between the imaging area and the infrared transmissive area.

Optionally, the imaging area and the infrared permeable area are an integral injection molding structure.

Optionally, the material of the imaging area is the same as the material of the infrared transmissive area.

On the other hand, an embodiment of the present application further provides an image pickup apparatus including a camera and a protective cover, and the camera is housed in the protective cover, wherein the protective cover is specifically a protective cover as described above.

Optionally, the camera device further includes a light shielding ring, and the light shielding ring is set in the camera An end of the lens is disposed, the light shielding ring houses a lens, and the light shielding ring is located in a region where the light shielding tape is enclosed on the protective cover.

Optionally, the camera device further includes a body and a movement disposed in the body, and an infrared lamp and a mounting frame, wherein the infrared lamp and the lens of the camera are disposed through the mounting bracket On the movement.

Optionally, the mounting bracket includes a first portion coupled to the movement and provided with a receiving cavity, and a second portion disposed in the receiving cavity of the first portion and rotatable about an axis of the receiving cavity, Wherein the infrared lamp is fixed to the first portion and the lens is fixed to the second portion.

Optionally, the mounting frame can drive the lens to rotate about the axis of the fuselage, and can drive the lens to swing toward the movement or away from the movement.

Optionally, the body includes a base, and a cover coupled to the base and covering the outer side of the transparent cover, wherein the outer cover is a one-shot injection structure.

Optionally, the camera device is provided with at least two of the lenses, wherein the transparent cover is provided with the imaging region corresponding to each of the lenses.

Optionally, the infrared lamp comprises a light source, a cylindrical light transmitting mirror and an infrared light shell; the cylindrical light projecting mirror is disposed at a light emitting position of the light source and condenses light of the light source, the infrared light shell The light source and the cylindrical light transmissive mirror are covered.

In this solution, the transparent cover of the protective cover is provided with a light-shielding strip. When the infrared light emitted by the infrared light is irradiated in the infrared-transmissive area, the light-shielding band blocks the infrared light to the imaging area to a certain extent, thereby reducing or even reducing to some extent. Eliminate the influence of infrared light on the lens imaging, and thus improve the quality of the image captured by the camera.

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 schematic cross-sectional view showing a conventional hemispherical camera;

2 is a schematic cross-sectional view showing the image pickup apparatus provided in Embodiment 1;

Figure 3 is a perspective view of a perspective view of the protective cover of Figure 2;

Figure 4 is a perspective view of another perspective view of the protective cover of Figure 2;

5 is a schematic cross-sectional view showing the image pickup apparatus provided in Embodiment 2;

Figure 6 is a perspective view of the protective cover of Figure 5;

7 is a schematic view showing the external structure of the image pickup apparatus provided in Embodiment 3 when the cover is removed;

8 is a schematic view showing the internal structure of the image pickup apparatus of FIG. 7;

9 is a schematic structural view of the transparent cover of the image pickup device of FIG. 7 separated from the movement;

FIG. 10 is a schematic structural view of the image pickup apparatus of FIG. 7 when the transparent cover is removed; FIG.

FIG. 11 is a schematic structural view of an image pickup apparatus provided in Embodiment 4.

Wherein, the correspondence between the component name and the reference numeral in FIG. 1 is:

1, hemisphere type camera; 2, protective cover; 3, camera; 4, blackout ring; 5, night vision monitoring infrared light.

Correspondence between component names and reference numerals in Figures 2 to 4:

10, camera device; 20, protective cover; 21, the first part; 22, the second part; 23, shading strip; 24, ribs; 25, transparent cover; 30, camera; 40, blackout ring; light.

Correspondence between component names and reference numerals in Figures 5 and 6:

60, camera device; 70, protective cover; 71, the first part; 72, the second part; 73, slot; 75, transparent cover; 30, camera; 40, blackout ring; 50, night vision monitoring infrared light.

Correspondence between component names and reference numerals in Figures 7 to 11:

1, the fuselage; 2, transparent cover; 3, mounting frame; 31, the first part of the mounting frame; 32, the second part of the mounting frame; 4, the lens; 5, infrared light; 6, the movement; 11, the base; Imaging area; 22, through the infrared area.

detailed description

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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.

Example 1

As shown in FIG. 2, this figure is a full-sectional schematic view of an image pickup apparatus provided in Embodiment 1, and the image pickup apparatus 10 includes a camera assembly and a protective cover 20. The protective cover 20 houses the camera assembly.

The camera assembly includes a camera 30, a light blocking ring 40, and a night vision monitoring infrared light 50. The camera 30 has a substantially cylindrical structure. An image sensor is provided in the camera 30. The image sensor may be a CCD (Charge-coupled Device) image sensor or a CMOS (Complementary Metal-Oxide-Semiconductor) sensor. A lens is provided at an end of one end of the camera 30. The lens is facing away from the other end of the camera 30. There is no occlusion between the lens and the image sensor. Light emitted or reflected by the object can be transmitted through the lens and then incident into the image sensor, which converts the received light into an electrical signal carrying the image information of the object. These electrical signals are typically transmitted to a storage unit of the monitoring system for storage and/or transmitted to a monitoring display for display.

The shade ring 40 is constructed as a straight tube structure with open ends. The shade 40 is set at one end of the camera 30 where the lens is provided. The inner peripheral surface of the shade ring 40 abuts against the outer peripheral surface of the camera 30. The hood 40 houses the lens and extends toward the front end of the lens.

The night vision monitoring infrared lamp 50 is disposed on one side of the camera 30. The illumination direction of the night vision monitoring infrared lamp 50 is usually set to be in the same direction as the lens orientation. The night vision monitoring infrared lamp 50 is preferably an infrared light emitting diode. Night vision monitors infrared red as a fill light tool for camera 30 at night. The infrared light emitted by the night vision monitoring infrared lamp 50 can range from 850 to 950 nanometers.

The protective cover 20 includes a transparent cover 25 and a light shielding tape. The light shielding tape extends along the transparent cover 25. The light shielding strip is configured as a light shielding strip 23 . The light shielding strip 23 is embedded in the transparent cover 25. The light shielding strip 23 extends over the transparent cover 25 and divides the transparent cover 25 into a first portion 21 and a second portion 22. The first portion 21 and the second portion 22 each have a sheet-like structure, that is, the first portion 21 and the second portion are thin-walled shell structures. The inwardly facing surface of the first portion 21 and the inwardly facing surface of the second portion 22 are correspondingly aligned. The outwardly facing surface of the first portion 21 and the outwardly facing surface of the second portion 22 are correspondingly aligned. Both the first portion 21 and the second portion 22 are made of a transparent material. The transparent material may be a transparent plastic or a transparent glass, or may be a translucent material such as a tinted glass. The first portion 21 and the second portion 22 are separated from each other. The light shielding strip 23 has a long strip shape. The light shielding strip 23 is disposed in the seam between the first portion 21 and the second portion 22. The opposite sides of the light shielding strip 23 abut against the first portion 21 and the second portion 22, respectively. The light shielding strip 23 extends along the side of the first portion 21. The light shielding strip 23 is opaque. In order to facilitate better geography for those skilled in the art 3 and FIG. 4, wherein FIG. 3 is a perspective view of the protective cover of FIG. 2, and FIG. 4 is a perspective view of the protective cover of FIG.

One end of the shading ring 40 facing away from the camera 30 is disposed to always face the first portion 21 and is adjacent to the first portion 21. The axis of the shade ring 40 is always perpendicular to the surface of the first portion 21. The night vision monitoring infrared lamp 50 is aligned with the second portion 22, and the night vision monitoring infrared lamp 50 is oriented toward the second portion 22. The first part is used to image the desired light through the camera 30. The second portion 22 can monitor the infrared light emitted by the infrared lamp 50 through night vision.

It should be noted that, as previously described, the light shielding strip 23 extends over the transparent cover 25 and divides the transparent cover 25 into the first portion 21 and the second portion 22; and the first portion is used for imaging through the camera 30. The second portion 22 of the light can monitor the infrared light emitted by the infrared lamp 50 through night vision. It will be understood that the first part and the second part of the functional description, the first part is the technical term "imaging area" which is familiar to those skilled in the art, and the second part is the technical term "translucent area" which is familiar to those skilled in the art. . Therefore, that is, the light shielding strip 23 extends over the transparent cover 25, and the transparent cover 25 is partitioned into a first portion 21 (imaging area) and a second portion 22 (infrared-through area).

Most of the infrared light emitted by the night vision monitoring infrared lamp 50 can be transmitted through the second portion 22 to the position facing the lens to fill the area captured by the camera 30. The shade 40 blocks the night vision from the portion of the infrared light 50 that is directed toward the lens. At the same time, since the light shielding strip 23 is disposed between the first portion 21 and the second portion 22, and the light shielding strip 23 is opaque. The infrared rays conducted in the second portion 22 are incident on the light-shielding strip 23 and are absorbed by the light-shielding strip 23. Thus, the infrared light refracted from the second portion 22 into the lens is reduced, thereby improving the quality of the image sensor at night.

Preferably, the light shielding strip 23 is in the form of a sheet, and one surface of the light shielding strip 23 abuts against the side surface of the first portion 21. The use of the sheet-like light-shielding strip 23 can correspondingly reduce the occlusion of the infrared light transmitted from the inside of the protective cover 20 to the second portion 22, and can also reduce the occlusion of the light transmitted from the outside of the protective cover 20 into the first portion 21.

Preferably, the outwardly facing surface of the first portion 21 is flush with the outwardly facing side of the light shielding strip 23. Such a protective cover 20 is more aesthetically pleasing.

Preferably, the inward side of the light shielding strip 23 protrudes from the inner surface of the first portion 21 to block the fitting gap between the light shielding ring 40 and the first portion 21. Due to the occlusion of the convex portion of the light shielding strip 23, it is difficult for infrared light to enter the light shielding ring 40 from the gap between the protective cover 20 and the light shielding ring 40. especially, The convex portion of the light shielding strip 23 also blocks part of the infrared light directly from the night vision monitoring infrared lamp 50 toward the first portion 21, so that the infrared light reflected from the outwardly facing surface of the first portion 21 into the light shielding ring 40 can be reduced or eliminated. .

Preferably, the light shielding strip 23 is further provided with two ribs 24 projecting from both surfaces of the light shielding strip 23, respectively. The ribs 24 extend in the extending direction of the light shielding strip 23. The structure of the light-shielding strip 23 is reinforced, and the light-shielding strip 23 is not easily bent at the time of assembly, and assembly is more convenient. More preferably, the two ribs 24 abut against the inwardly facing surface of the first portion 21 and the inwardly facing surface of the second portion 22, respectively, the first portion 21 and the second portion 22 being bonded to the light shielding strip 23, respectively. Thus, the rib 24 increases the area where the first portion 21 and the second portion 22 are bonded to the light shielding strip 23, respectively, and the connection between the first portion 21 and the second portion 22 and the light shielding strip 23 is stronger.

The image pickup apparatus 10 further includes a housing (not shown). The housing is generally constructed in a cylindrical shape. The camera 30 is hinged at one end of the housing. The axis of rotation of the camera 30 is perpendicular to the axis of the housing. The camera 30 can swing about its axis of rotation to adjust the angle of view of the lens. A plurality of night vision monitoring infrared lamps 50 are respectively disposed on both sides of the rotation axis of the camera 30, and are fixed to the camera 30. Thus, the illumination direction of the night vision monitoring infrared lamp 50 always coincides with the lens orientation of the camera 30. When the camera 30 rotates, the path that the shade 40 is swept away from the end of the camera 30 is a strip-shaped spherical surface.

As shown in FIG. 3, the protective cover 20 is fastened to the end of the housing where the camera 30 is disposed. The first portion 21 is configured as a curved panel in which the light-shielding ring 40 is spaced away from the path scanned by the end of the camera 30, and the curved panel is a strip-shaped spherical panel structure. Thus, the end of the hood 40 facing away from the camera 30 can always face the first portion 21. The second portion 22 is configured as a hemispherical thin shell structure provided with strip-shaped indentations. The first portion 21 is disposed within the notch of the second portion 22, and the light shielding strip 23 is disposed between the first portion 21 and the second portion 22. The first portion 21, the second portion 22, and the light shielding strip 23 are combined into a transparent cover 25 of a semi-spherical thin casing. Such a protective cover 20 is mounted on the image pickup device 10, and it can be seen that the image pickup device 10 is more beautiful and more concealed.

The light-shielding strip 23 can always block the infrared light conducted in the second portion 22 from being outside the first portion 21, so that infrared light conducted in the second portion 22 is difficult to enter into the lens. Thereby, the effect of the image pickup by the articulated image pickup device 10 is enhanced.

Preferably, as shown in FIG. 4, the light shielding strip 23 has a U-shaped structure, and both ends of the light shielding strip 23 extend to the edge of the transparent cover 25. Thus, the contour of one end of the surface of the first portion 21 is U-shaped, when shading When the end of the ring 40 moves away from the end of the camera 30 to the U-shaped bottom of the light-shielding strip 23, the light-shielding strip 23 blocks the infrared light that is conducted from the second portion 22 into the light-shielding ring 40 in three directions. At this time, the light-shielding strip 23 is shielded from light. best effect.

Preferably, the transparent cover 25 is a hemispherical housing, and the central portion of the light shielding strip 23 is adjacent to the top end of the transparent cover 25. Since the angle at which the camera 30 is angled with the axis of the housing during rotation is typically in the range of 0-80, such a light-shielding strip 23 can better match such a camera 30.

Preferably, the end face of the light-shielding ring 40 facing away from one end of the camera 30 is preferably a circular arc surface to match the protective cover 20 of the hemispherical thin casing. This can reduce the infrared light that leaks into the lens from the gap between the inner surface of the protective cover 20 and the light-shielding ring 40.

Further, the protective cover 20 is an integrated member made by a two-color injection molding process.

Example 2

The imaging device 60 in the second embodiment differs from the imaging device 10 in the first embodiment only in the structure of the protective cover. For the sake of brevity, only the protective cover 70 of the image pickup device 60 in Embodiment 2 will be described below.

As shown in FIG. 5, this figure is a schematic cross-sectional view of the image pickup apparatus provided in Embodiment 2. The protective cover 70 includes a transparent cover 75 and a light shielding tape. The outer surface of the transparent cover 75 is provided with a groove 73. The groove 73 has an elongated shape and extends over the transparent cover 75. The light shielding tape includes a light shielding coating (not shown) disposed in the groove 73. A light-shielding coating is applied to the inner wall of the groove 73. The groove 73 divides the transparent cover 75 into a first portion 71 and a second portion 72. The end of the light-shielding ring 40 of the image pickup device 60 facing away from the camera 30 faces the first portion 71. The first portion 71 can image the desired light through the camera 30. The second portion 72 is for monitoring the infrared light emitted by the infrared lamp 50 through night vision. The light-shielding coating is preferably a black coating. In order to facilitate a person skilled in the art to better understand the specific structure of the transparent cover in this embodiment, please refer to FIG. 6 , which is a perspective view of the protective cover of FIG. 5 .

Most of the infrared light emitted by the night vision monitoring infrared lamp 50 can be transmitted through the second portion 72 to the position facing the lens to fill the area captured by the camera 30. The shade 40 blocks the night vision from the portion of the infrared light 50 that is directed toward the lens. Meanwhile, since the groove 73 is disposed between the first portion 71 and the second portion 72, and the groove 73 is provided with a light-shielding coating. The infrared light conducted in the second portion 72 is incident on the light-shielding coating and is absorbed by the light-shielding coating. Thus, from the second part 72 The reduction of infrared light that is refracted into the lens increases the quality of the image sensor at night. The depth of the groove 73 is preferably in the range of 0.5 to 1.5 mm. The width of the groove 73 is preferably in the range of 1-2.5 mm.

Preferably, the grooves 73 on opposite sides of the first portion 71 are respectively aligned with opposite sides of the ends of the shade ring 40. Thus, after the groove 73 is engaged with the light-shielding ring 40, the optical path of the infrared light reflected from the second portion 72 into the light-shielding ring 40 becomes narrower, thereby achieving a better light-shielding effect.

The camera device 60 also includes a housing (not shown). The housing is generally constructed in a cylindrical shape. The camera 30 is hinged at one end of the housing. The axis of rotation of the camera 30 is perpendicular to the axis of the housing. The camera 30 can swing about its axis of rotation to adjust the angle of view of the lens. A plurality of night vision monitoring infrared lamps 50 are respectively disposed on both sides of the rotation axis of the camera 30, and are fixed to the camera 30. Thus, the illumination direction of the night vision monitoring infrared lamp 50 always coincides with the lens orientation of the camera 30. When the camera 30 rotates, the path that the shade 40 is swept away from the end of the camera 30 is a strip-shaped spherical surface.

As shown in FIG. 6, the protective cover 70 is fastened to the end of the housing where the camera 30 is disposed. The first portion 71 is configured as a curved panel in which the light-shielding ring 40 is spaced away from the path scanned by the end of the camera 30, and the curved panel is a strip-shaped ball panel structure. Thus, the end of the hood 40 facing away from the camera 30 can always face the first portion 71. The second portion 72 is configured as a hemispherical thin shell structure provided with strip-shaped indentations. The first portion 71, the second portion 72, and the groove 73 are combined into a transparent cover 75 of a semi-spherical thin casing. Such a protective cover 70 is attached to the image pickup device 60, and it may appear that the image pickup device 60 is more beautiful and more concealed.

The slot 73 can always block infrared light conducted within the second portion 72 from outside the first portion 71 such that infrared light conducted within the second portion 72 is difficult to enter into the lens. Thereby, the effect of the image pickup by the articulated image pickup device 60 is enhanced.

Preferably, the light shielding tape has a U shape, and both ends of the light shielding tape extend to the edge of the transparent cover 75, and the groove 73 forms a U-shaped groove that matches the light shielding tape. Thus, the contour of one end of the surface of the first portion 71 is U-shaped, and when the shadow ring 40 moves away from the end of the camera 30 to the U-shaped bottom of the groove 73, the groove 73 blocks from the second portion 72 from three directions. The infrared light in the hood 40, at this time, the groove 73 has the best light blocking effect.

Preferably, the transparent cover 75 is a hemispherical housing, and the central portion of the light shielding tape 23 is adjacent to the top end of the transparent cover 75. Since the angle at which the camera 30 is angled with the axis of the housing during rotation is typically in the range of 0-80, such a light-shielding strip 23 can better match such a camera 30.

Preferably, the end surface of the light shielding ring 40 facing away from one end of the camera 30 is preferably a circular arc surface to The protective cover 70 of the spherical thin shell is matched. This can reduce the infrared light that leaks into the lens from the gap between the inner surface of the protective cover 70 and the light-shielding ring 40.

Further, the light-shielding tape forms a frosted layer on the inner wall of the groove 73, and a frosted layer is used instead of the light-shielding coating layer in the second embodiment. The infrared light conducted in the second portion 72 is incident on the light-shielding coating and is absorbed or scattered by the frosted layer. Thus, the infrared light refracted from the second portion 72 into the lens is reduced, thereby improving the quality of the image sensor at night. The depth of the groove 73 is preferably in the range of 0.5 to 1.5 mm. The width of the groove 73 is preferably in the range of 1-2.5 mm.

It should be noted that the "U-shape" in the present application is not limited to the structure of the character U, and may be similar to the structure of the character U. The structure similar to the character U may be, for example, a V-shaped structure, an arcuate structure, an arched structure, a horseshoe-shaped structure, or the like.

Example 3

Referring to FIG. 7 and FIG. 8 , FIG. 7 is a schematic diagram showing the external structure of the image pickup apparatus provided in Embodiment 3 when the cover is removed, and FIG. 8 is a schematic view showing the internal structure of the image pickup apparatus of FIG. 7 .

The infrared camera of this embodiment includes a body 1 including a base 11 and a cover (not shown) connected to the base 11; a movement 6 disposed in the base 11 of the body 1; the lens 4 and Infrared lamp 5, both mounted on the movement 6 through the mounting bracket 3, and both are disposed in the outer cover of the fuselage 1; and a transparent cover 2 connected to the movement 6 and disposed on the lens 4 (infrared lamp 5) Between the housing and the housing, an imaging area 21 corresponding to the lens 4 and an infrared-transmissive area 22 corresponding to the infrared lamp 5 (as shown in FIG. 3) are included, and the imaging area 21 and the infrared-transmissive area 22 are split injection molding structures. When the imaging area 21 and the infrared-transmissive area 22 are injection-molded, the connection position of the imaging area 21 and the infrared-transmissive area 22 may appear similar to the connection gap (the material between the imaging area 21 and the infrared-transmissive area 22 is microscopically In the case of the phenomenon that the misalignment, the connection portion is not smooth, etc., that is, the connection gap between the imaging region 21 and the infrared ray transmissive region 22 in the present embodiment forms a light shielding tape, and it is also considered that the light shielding tape separates the transparent cover 2 It is an imaging area 21 and an infrared permeable area 22.

It should be noted that, in the specific embodiment, the transparent cover 2 has the functions of transmitting light and protecting functional components such as a lens and an infrared lamp in the imaging device. Therefore, the transparent cover 2 may also be referred to as

specific embodiments

1 and 2. The protective cover mentioned.

Thus, when the infrared light emitted from the infrared lamp 5 is irradiated on the infrared ray-inducing region 22, the imaging region 21 The connection portion (light-shielding band) with the infrared-transmissive region 22 hinders the infrared light from being strung to the imaging region 21 to some extent, thereby reducing the influence of infrared light on the imaging of the lens 4 to some extent.

The imaging area 21 refers to a portion that passes through the transparent cover 2 when the light of the object enters the lens 4. The infrared permeable region 22 refers to an area other than the imaging area 21 on the transparent cover 2, such as the infrared ray area 22, which is located at the back of the camera. That is to say, the imaging area 21 is used to image the required light through the camera 30, and the infrared-transparent area 22 is capable of monitoring the infrared light emitted by the infrared lamp 50 through the night vision.

In the specific embodiment, the injection molding of the image forming area 21 and the infrared ray transmitting area 22 means that the two are sequentially injection molded. In one example, at the time of injection molding, the image forming area 21 is first injected, and the injection molding liquid of the image forming area 21 is solidified and then injected into the infrared ray region 22. Since the area of the imaging area 21 is smaller than the area of the infrared-transmissive area 22 under normal circumstances, the operation is convenient and labor-saving. At the time of injection molding, the image forming area 21 and the infrared ray transmitting area 22 use different molds to facilitate injection molding.

When the image forming area 21 and the infrared ray transmitting area 22 are injection molded, the two can be injection molded into a one-piece structure to facilitate processing. That is, after the injection of the imaging region 21, when the infrared ray transmissive region 22 needs to be injection molded, the injection molding liquid connected to the imaging region 21 of the infrared ray transmissive region 22 is attached to the imaging region 21 to be solidified. With this arrangement, the formed transparent cover 2 has better strength, higher sealing property, simple structure, and convenient setting. When the image forming area 21 and the infrared ray transmitting area 22 are injection molded, the same injection molding liquid (the composition of the injection molding liquid is the same) can be used for the image forming area 21 and the infrared ray transmitting area 22 to further improve the convenience in operation. After the transparent cover 2 is injection molded, the thickness of the imaging region 21 and the infrared permeable region 22 may be the same.

The outer cover can be a one-shot injection structure. That is, when the outer cover is processed, the outer cover is injection molded at one time. Since the outer cover has less influence on the infrared light, the influence of the outer cover on the imaging of the lens 4 is small, and the structure is simple, the processing is convenient, and the work is labor-saving.

9 and FIG. 10, FIG. 9 is a schematic structural view showing a case where the transparent cover of the image pickup apparatus of FIG. 7 is separated from the movement, and FIG. 10 is a schematic structural view of the image pickup apparatus of FIG. 7 when the transparent cover is removed.

The mounting bracket 3 includes: a first portion 31 of the mounting bracket, is connected to the movement 6, is substantially spherical, and is provided with a receiving hole in the middle; and a second portion 32 of the mounting bracket is disposed in the receiving hole of the first portion 31 of the mounting frame, The hole is mounted, and after the second portion 32 of the mounting bracket is mounted, the second portion 32 of the mounting bracket is rotatable about the axis of the receiving opening of the first portion 31 of the mounting bracket. Infrared lamp 5 is fixed on the mounting frame first In the portion 31, the lens 4 is fixed in the mounting hole of the second portion 32 of the mounting bracket, so as to make the infrared lamp 5 correspond to the infrared-transmissive region 22 of the transparent cover 2, so that the lens 4 corresponds to the imaging region 21 of the transparent cover 2, Thereby, the possibility that the light emitted from the infrared lamp 5 is irradiated to the image capturing area of the lens 4 is reduced. Negotiation with the lens 4. When the second portion 32 of the mounting bracket is disposed, the shape of the second portion 32 of the mounting bracket can be complementary to the shape of the first portion 31 of the mounting bracket to enable the second portion 32 of the mounting bracket to be wrapped around the first portion 31 of the mounting bracket by shape constraints. The axis of the receiving hole is rotated. Further, the mounting bracket 3 can also be arranged to rotate about the axis of the body 1, and at the same time can swing along the axis of the body 1 (swinging toward or away from the base 11) to facilitate adjustment of the angle of view of the lens 4. The installation method of the mounting frame 3 and the movement 6 is the same as the existing installation method, and will not be described herein.

When the second portion 32 of the mounting frame rotates about the axis of the receiving hole of the first portion 31 of the mounting frame, the second portion 32 of the mounting frame drives the lens 4 to also rotate about the axis of the receiving hole of the first portion 31 of the mounting frame. A portion 31, the infrared lamp 5, the movement 6 and the transparent cover 2 are not moved relative to the body 1. When the mounting frame 3 is rotated about the axis of the body 1, the lens 4, the infrared lamp 5, the movement 6, and the transparent cover 2 are also rotated about the axis of the body 1. When the mounting frame 3 is swung along the axis of the body 1, the driving lens 4 and the infrared lamp 5 are also swung along the axis of the body 1, and the movement 6 and the transparent cover 2 are not moved with respect to the body 1.

When the lens 4 needs to be adjusted, it is necessary to disassemble the cover and the transparent cover 2, and then adjust the angle of view of the lens 4. After the lens 4 is adjusted into position, the transparent cover 2 and the outer cover are mounted. When the mounting frame 3 is rotated about the axis of the body 1, since the movement 6 rotates around the axis of the body 1 with the mounting frame 3, the imaging area of the transparent cover 2 when the transparent cover 2 is mounted on the movement 6 21 still corresponds to lens 4. Since the lens 4 can be swung along the axis of the body 1, when the imaging region 21 is disposed, the imaging region 21 can be set in a strip shape so that the lens 4 corresponds to the imaging region 21 when swung along the axis of the body 1. . By setting in the above manner, the structure is simple, the adjustment is convenient, and the work is saved.

Example 4

The imaging device in the fourth embodiment differs from the imaging device in the third embodiment only in the number of lenses and the specific structure. For the sake of brevity, only the number of lenses and the specific structure in Embodiment 4 will be described below.

Please refer to FIG. 11 , which is a schematic structural diagram of an image pickup apparatus provided in Embodiment 4.

As shown in FIG. 11, more than one lens 4 can be disposed on the mounting frame 3 to increase the infrared The camera's surveillance field of view A. At this time, the transparent cover 2 is provided with an imaging area 21 corresponding to each lens 4.

In addition, each of the infrared lamps 5 includes a light source for emitting infrared light, a cylindrical light-transmitting mirror (not shown) disposed at a light-emitting position of the light source, and an infrared light that covers the light source and the cylindrical light-transmitting mirror. Shell 51. Wherein, the extending direction of the cylindrical light transmitting mirror is substantially perpendicular to the emitting direction of the infrared light for concentrating the infrared light into a rectangular spot, thereby reducing the possibility of infrared light being irradiated to the imaging region 21. The infrared light is further concentrated by the infrared lamp housing 51, and the light source and the cylindrical light transmission mirror are protected by the infrared lamp housing to improve the service life of the light source and the cylindrical light transmission mirror.

It should be noted that, in this context, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply such entities or operations. There is any such actual relationship or order between them. Furthermore, the term "comprises" or "comprises" or "comprises" or any other variations thereof is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that comprises a plurality of elements includes not only those elements but also Other elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

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

Claims

A protective cover is applied to an image pickup device, comprising: a transparent cover and a light shielding tape, the light shielding tape extending on the transparent cover, and separating the transparent cover into an imaging area and an infrared-transmissive area to block Light is reflected by the infrared permeable region to the imaging region.
The protective cover according to claim 1, wherein said light shielding tape has a U shape and both ends extend to an edge of said transparent cover.
The protective cover according to claim 2, wherein the transparent cover is a hemispherical casing, and a central portion of the light shielding tape is adjacent to a top end of the transparent cover.
The protective cover according to any one of claims 1 to 3, wherein the transparent cover comprises the image forming area and the infrared permeable area spliced together, and the light shielding tape is embedded in the image forming area And a light-shielding strip in the seam of the infrared-transmissive region.
The protective cover according to claim 4, wherein the light shielding strip is a sheet-like structure, and an outer surface of the light shielding strip is flush with an outer surface of the transparent cover.
The protective cover according to claim 4, wherein the thickness of the light shielding strip is greater than the thickness of the transparent cover.
The protective cover according to claim 4, wherein the dam strip is further provided with ribs that fit the inner surface of the transparent cover in the width direction.
A protective cover according to claim 7 wherein said ribs are bonded to said transparent cover.
The protective cover according to any one of claims 1 to 3, characterized in that the outer surface of the transparent cover is provided with a groove, and the light shielding tape comprises a light-shielding coating provided in the groove.
The protective cover according to any one of claims 1 to 3, characterized in that the outer surface of the transparent cover is provided with a groove, and the light shielding tape is a frosted layer of the outer surface of the groove.
The protective cover according to any one of claims 1 to 3, wherein the imaging region and the infrared-transmissive region are injection molded structures, and the light shielding tape is the imaging region and the infrared permeable region. Connect the gap.
The protective cover of claim 11 wherein said imaging area and said infrared permeable area are unitary injection molded structures.
The protective cover according to claim 11, wherein the material of the image forming area The material is the same as the material of the infrared transmissive region.
An image pickup apparatus comprising a camera and a protective cover, the camera being housed in the protective cover, wherein the protective cover is specifically the protective cover according to any one of claims 1 to 13.
The image pickup apparatus according to claim 14, wherein the image pickup device further comprises a light shielding ring, the light shielding ring is set at one end of the camera provided with a lens, the light shielding ring accommodates a lens, and the light shielding ring Located in a region enclosed by the protective cover on the protective cover.
The image pickup apparatus according to claim 14, wherein the image pickup apparatus further comprises a body and a movement disposed in the body, and an infrared lamp and a mounting frame, the infrared lamp and the camera A lens is disposed on the movement through the mounting bracket.
The image pickup apparatus according to claim 16, wherein said mounting bracket includes a first portion connected to said movement and provided with a receiving chamber, and is disposed in said receiving portion of said first portion and rotatable around said A second portion of the axis of rotation of the receiving chamber, wherein the infrared lamp is fixed to the first portion and the lens is fixed to the second portion.
The image pickup apparatus according to claim 16, wherein the mounting frame can drive the lens to rotate about an axis of the body, and can drive the lens toward the movement or away from the movement The direction of the swing.
The image pickup apparatus according to any one of claims 14 to 18, wherein the body includes a base, and a cover that is coupled to the base and covers the outer side of the transparent cover, wherein the cover is One injection molding structure.
The image pickup apparatus according to any one of claims 14 to 18, wherein the image pickup device is provided with at least two of the lenses, wherein the transparent cover is provided with the image corresponding to each of the lenses region.
The image pickup apparatus according to any one of claims 14 to 18, wherein the infrared lamp comprises a light source, a cylindrical light transmissive mirror and an infrared lamp housing; and the cylindrical light projecting mirror is disposed at the light source of the light source Positioning and concentrating light of the light source, the infrared lamp housing is provided with the light source and a cylindrical light transmissive mirror.