Underwater camera

Abstract

The present invention mainly relates to an underwater camera device, including a camera and a lamp head device. The lighting device cannot be installed at the same horizontal plane as the camera light intake area in front of the camera. The lamp head device is arranged on the top of the camera, and the lamp head device includes a main body and a lamp plate and a light guide groove installed on the main body, so that the illumination light can be emitted from the light guide groove on the top of the camera out of the main body and toward the shooting direction of the camera. With the underwater camera device described in the present invention, the illumination light can be irradiated onto the object being photographed on the front of the lens by diffuse reflection at multiple angles, forming soft diffuse reflection light, so that the brightness of the object being photographed in the shooting picture is uniform, and the details of the shooting content are displayed more completely. Since the large light ratio phenomenon generated by direct light during the shooting process is avoided, the problem of dust particles in the water blocking the line of sight can be effectively solved, so that the picture details of the object being photographed are richer, and better underwater video monitoring effect is achieved.

Description

Technical Field

[0001] The invention belongs to the field of video surveillance devices, and in particular relates to an underwater camera device that can be used for underwater detection and surveillance. Background Art

[0002] With the increasing number of underwater exploration activities in daily life, underwater cameras designed specifically for underwater videography are becoming increasingly popular. Due to the harsh underwater environment, particularly the lack of light, ambient brightness decreases dramatically with increasing depth. Therefore, underwater cameras typically feature a ring of infrared fill lights surrounding the lens to capture objects in the dark. For conventional fill-light cameras, when light directly illuminates objects in the dark underwater environment from the front of the camera, the image appears to be partially overly bright and with excessive contrast, a phenomenon known as a high-contrast visual effect. This creates a sharp contrast between objects close to the lens and the more distant background, significantly reducing the effective viewing range of the captured image. In particular, if a large number of dust particles are present in the underwater environment, the dust particles close to the lens appear excessively bright, while the ambient brightness farther away is too low. The excessively bright dust particles can obscure the overall image, resulting in poor visibility and hindering the observer's ability to monitor the scene in real time. At the same time, since the light is concentrated in front of the camera, the shooting range of the underwater camera is small. The visible range is only concentrated in the center of the shooting picture, and a large number of black corners appear on the screen, which greatly wastes screen resources. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention provides an underwater camera device with good visual effect, simple structure and easy use.

[0004] The present invention provides an underwater camera device, including a camera and a lamp head device. No lighting device is installed at the same horizontal plane as the front of the camera and the light input area of the camera. The lamp head device is arranged on the top of the camera. The lamp head device includes a main body and a light board. The light board is installed on the main body, and the light emitted by the light board is toward the shooting direction of the camera, so that the illumination light can be emitted from the top of the camera toward the shooting direction of the camera.

[0005] Preferably, the front face of the main body is consistent with the front face of the camera, and a lamp holder surface and a light guide groove are provided on the main body, the lamp board is mounted on the lamp holder surface, and the light guide groove is connected to the lamp holder surface, so that the light emitted by the lamp board can be emitted from the main body through the light guide groove; the light guide groove is composed of a first side surface, a top surface, a second side surface and a bottom surface connected and enclosed in sequence, and the horizontal edges of the top surface and the bottom surface away from the end of the lamp holder surface are parallel to each other, forming a rectangular main light port, so that light can be emitted from the main light port on the front face of the main body; the first side surface and the second side surface are symmetrically arranged on both sides of the lamp holder surface, and the first side surface, the lamp holder surface and the second side surface are connected in sequence; the first side surface and the second side surface are respectively connected to the lamp holder surface The angle formed is a side angle, and the angle of the side angle is greater than 90 degrees, so that the first side surface, the second side surface and the lamp holder surface together form an isosceles trapezoidal structure; when the lamp holder device is placed vertically, there is an angle between the top surface and the horizontal plane, and there is also an angle between the bottom surface and the horizontal plane; the oblique edge of the first side surface away from the lamp holder surface is respectively connected to the top surface side edge and the bottom surface side edge to form a first side light port, and the oblique edge of the second side surface away from the lamp holder surface is respectively connected to the top surface side edge and the bottom surface side edge to form a second side light port, and the first side light port and the second side light port are respectively located on the two side surfaces of the main body, so that light can be emitted from the two side light ports on both sides of the main body.

[0006] Preferably, a reflective cover is further provided at a horizontal edge position of the top surface away from one end of the lamp holder surface, and the reflective cover is formed by the horizontal edge structure of the top surface extending horizontally toward the outer side of the front surface of the main body.

[0007] Preferably, a concave platform structure is provided at a position near the camera on the lower front of the main body, and the outermost vertical plane of the main body front is located in the same plane as the edge of the camera front shell in the vertical direction.

[0008] Preferably, when the lamp holder device is placed vertically, the angle between the top surface and the horizontal plane is the top surface angle, and its angle range is 25 degrees to 35 degrees; the angle between the bottom surface and the horizontal plane is the bottom surface angle, and its angle range is 20 degrees to 30 degrees.

[0009] Preferably, there is an angle between the plane where the top surface is located and the plane where the bottom surface is located.

[0010] Preferably, when the lamp holder device is placed vertically, the angle of the top surface is 29 degrees, and the angle of the bottom surface is 24 degrees.

[0011] Preferably, the distance between the horizontal edge of the bottom surface away from the lamp holder surface and the oblique edge of the first side surface away from the lamp holder surface is in a range of 5 mm to 8 mm.

[0012] Preferably, the first side surface, the second side surface, the top surface, the bottom surface, the inner surface of the reflective cover and the outer surface of the main body are all provided with a reflective coating.

[0013] Preferably, a plurality of lightless infrared lamps or LED lamps are evenly arranged on the lamp board.

[0014] With the underwater camera device described in the present invention, since the light is emitted from the light guide groove obliquely upward on the upper part of the lens, it is finally irradiated onto the object being photographed in front of the lens through diffuse reflection at multiple angles, forming soft diffuse reflected light, so that the brightness of the object being photographed in the shooting picture is uniform, and the details of the shooting content are more complete. Because the projection of the main light port in the vertical direction is a rectangular shape, the illumination range formed by the light source is also a rectangular area, which is more consistent with the observation range of the display screen. The side light port structure on the main body can better cooperate with the use of wide-angle lenses and cover the shooting range of the lens in the horizontal space. Since the large light ratio phenomenon generated by direct light during the shooting process is avoided, the problem of floating dust particles in the water blocking the line of sight can be effectively solved, greatly increasing the visibility range of underwater shooting. In summary, with the underwater camera device described in the present invention, the visual range is wider, the picture details of the object being photographed are richer, and better underwater video monitoring effects are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the left-view structure of an underwater camera device according to an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the main viewing direction structure of the underwater camera device according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of the lamp head device of the underwater camera device according to an embodiment of the present invention in the main viewing direction;

[0018] Figure 4 This is a schematic diagram of the internal structure of the lamp head device of the underwater camera device according to an embodiment of the present invention when viewed from the left;

[0019] In the figure, 1 is the camera, 2 is the lamp head device, 3 is the main body, 4 is the lamp board, 5 is the lamp holder surface, 6 is the first side surface, 7 is the top surface, 7 is the top surface angle, 8 is the second side surface, 9 is the bottom surface, 9 is the bottom surface angle, 10 is the reflective cover, 11 is the first side light port, and 12 is the inner concave platform. DETAILED DESCRIPTION Example

[0020] Depend on Figure 1 and Figure 2As shown, an underwater camera device includes a camera 1 and a lamp head device 2. A lighting device cannot be installed at the same horizontal plane as the light intake area of the camera 1 in front of the camera 1. The lamp head device 2 is arranged on the top of the camera 1. The lamp head device 2 includes a main body 3 and a light board 4. The light board 4 is mounted on the main body 3, and the light emitted by the lamp board 4 is directed in the shooting direction of the camera 1, so that the illumination light can be emitted from the top of the camera 1 in the shooting direction of the camera 1. The light board 4 is evenly arranged with multiple lightless infrared lamps or LED lamps for shooting illumination in a dark environment.

[0021] Depend on Figure 3 and Figure 4 As shown, in this embodiment, the front face of the main body 3 is aligned with the front face of the camera 1, and a lamp holder surface 5 and a light guide groove are provided within the main body 3. The lamp holder surface 5 serves as the mounting surface for the light board 4, allowing the light board 4 to be mounted on the lamp holder surface 5 facing the outside of the main body 3. The light guide groove is connected to the lamp holder surface 5, allowing light emitted by the light board 4 to be emitted from the main body 3 through the light guide groove. In this embodiment, the light board 4 uses eight 940 lightless infrared lamps as the illumination source. The eight infrared lamps are arranged in two rows of four lamps, one above the other. The light guide groove is composed of a first side surface 6, a top surface 7, a second side surface 8, and a bottom surface 9, which are connected and enclosed in sequence. The horizontal edges of the top surface 7 and the bottom surface 9 at the end away from the lamp holder surface 5 are parallel to each other, forming a rectangular main light port, allowing light to be emitted from the main light port on the front face of the main body 3. Because the main light port has a rectangular light output range, the illumination range covered by the light emitted by the light board 4 is also rectangular, which better matches the observation range of the display screen. The illumination range of the ordinary camera 1 is usually circular, which causes the display screen to appear bright in the middle and dark around, greatly reducing the use efficiency of the display screen.

[0022] A reflective cover 10 is also provided at the horizontal edge of the top surface 7, distal from the lamp holder surface 5. This reflective cover 10 extends horizontally from the horizontal edge of the top surface 7 toward the front exterior of the main body 3, with the extension measuring 4.5 mm. Due to the presence of the reflective cover 10, a portion of the light emitted from the light guide groove is emitted directly out of the main body 3, while another portion is reflected by the inner surface of the reflective cover 10 before being emitted out of the main body 3. This effectively increases the illumination distance and range of the light, ensuring optimal visual quality for subjects within a 20 cm shooting range in front of the lens.

[0023] The first side surface 6 and the second side surface 8 are symmetrically arranged on both sides of the lamp holder surface 5, and the first side surface 6, the lamp holder surface 5 and the second side surface 8 are connected in sequence. The angles formed between the first side surface 6 and the second side surface 8 and the lamp holder surface 5 are side angles, and the angles of the side angles are greater than 90 degrees, so that the first side surface 6, the second side surface 8 and the lamp holder surface 5 together form an isosceles trapezoidal structure; when the lamp holder device 2 is placed vertically, there is a top surface angle 71 between the top surface 7 and the horizontal plane, and the angle range of the top surface angle 71 is 25 degrees to 35 degrees; there is also a bottom surface angle 91 between the bottom surface 9 and the horizontal plane, and the angle range of the bottom surface angle 91 is 20 degrees to 30 degrees, wherein the angles of the top surface angle 71 and the bottom surface angle 91 should be calculated and set according to the lens parameters of the camera 1, the installation position of the lamp board 4 and the light outlet structure of the lamp holder device 2. In this embodiment, to achieve the best illumination effect of the infrared lamp, the top surface angle 71 is 29 degrees, and the bottom surface angle 91 is 24 degrees. At this time, the emitted light not only has a wider illumination range, but also has the most appropriate brightness within the effective shooting range. The top surface 7 and the bottom surface 9 are not parallel, that is, there is an angle between the plane where the top surface 7 and the plane where the bottom surface 9 are located. The farther away from the lamp holder surface 5, the greater the distance between the top surface 7 and the bottom surface 9. At the same time, the first side surface 6 and the second side surface 8 each have a side angle greater than 90 degrees with the lamp holder surface 5, so that the light emitted through the light guide groove can be emitted in a trumpet shape, which can effectively expand the illumination area of the lamp board 4.

[0024] During use, when the lamp head device 2 is placed vertically, the light projection angle of the entire light guide groove is set obliquely upward, which can effectively avoid the high light ratio visual interference caused by strong light reflection from the object in front of the lens when the light is directly incident on the object in front of the lens in the horizontal direction. Especially in the underwater area with a lot of floating dust, the high brightness reflection formed by the floating dust in front of the lens will cause a lot of visual interference, seriously affecting the visual effect of the object in the water. By adopting the light irradiation method of oblique upward direction, the light can produce multiple reflections between various media in the water to form a diffuse reflection effect of light, and finally illuminate the object with soft surrounding light. This lighting method can effectively control the contrast of the content captured in the captured image, avoid the visual interference of the overall image caused by the overly bright floating dust image near the lens, and can greatly improve the shooting clarity within the entire shooting range. Compared with the ordinary underwater camera 1, it can reduce the interference of floating dust reflection light by more than 90%.

[0025] The oblique edges of the first side surface 6 at the end away from the lamp holder surface 5 are connected to the side edges of the top surface 7 and the side edges of the bottom surface 9 to form a first side light opening 11. Similarly, the oblique edges of the second side surface 8 at the end away from the lamp holder surface 5 are connected to the side edges of the top surface 7 and the side edges of the bottom surface 9 to form a second side light opening. In the structure of the first side light opening 11, the distance between the horizontal edge of the bottom surface 9 at the end away from the lamp holder surface 5 and the oblique edge of the first side surface 6 at the end away from the lamp holder surface 5 ranges from 5 mm to 8 mm. In this embodiment, the distance is 7 mm. The corresponding second side light opening structure has the same dimensions as the first side light opening 11. Because the first side light opening 11 and the second side light opening are symmetrically arranged on the two side surfaces of the main body 3, part of the light in the light guide groove can be emitted from the two side light openings on both sides of the main body 3. This allows the first side light opening 11 and the second side light opening to effectively increase the horizontal illumination range of the light, better matching the shooting characteristics of the wide-angle lens, allowing the light to cover the effective horizontal shooting range of the wide-angle lens.

[0026] A recessed platform 12 structure is provided at the lower front portion of the main body 3 near the camera 1, and the outermost vertical plane of the main body 3 and the edge of the front shell of the camera 1 are located in the same plane in the vertical direction. The recessed platform 12 structure can avoid the imaging shadow problem caused by the shell structure of the lens itself during the lighting process. In order to achieve better light utilization efficiency, a reflective coating is provided on the first side surface 6, the second side surface 8, the top surface 7, the bottom surface 9, the inner surface of the reflective cover 10 and the outer surface of the main body 3, so that the light irradiated back to the main body 3 can be reflected again, achieving the effect of multi-angle fill light for the shooting environment. Since the first side surface 6, the second side surface 8, the top surface 7 and the bottom surface 9 that constitute the light guide groove all have a reflective effect, after the light is emitted from the light board 4, part of the light can be emitted directly from the main body 3, and the remaining light has been reflected multiple times in the light guide groove before emitting from the main body 3. When it is emitted from the main body 3, the light intensity is also reduced, which can also reduce the contrast of the captured image to a certain extent.

[0027] With the underwater camera device described in the present invention, since the light is emitted from the light guide groove at an angle upward on the upper part of the lens, and finally illuminates the object being photographed in front of the lens through diffuse reflection at multiple angles, soft diffuse reflected light is formed, so that the brightness of the object being photographed in the shooting picture is uniform, the contrast is not high, and the details of the shooting content are displayed more completely. Because the main light port is projected in the vertical direction into a rectangular shape, the illumination range formed by the light source is also a rectangular area, which is more consistent with the observation range of the display screen. The side light port structure on the main body can better cooperate with the use of wide-angle lenses and cover the shooting range of the lens in the horizontal space. Since the large light ratio phenomenon generated by direct light during the shooting process is avoided, the problem of floating dust particles in the water blocking the line of sight can be effectively solved, greatly increasing the visibility range of underwater shooting. In summary, with the underwater camera device described in the present invention, the visual range is wider, the picture details of the object being photographed are richer, and better underwater video monitoring effects are achieved.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified, optimized in appearance, or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An underwater camera device, comprising a camera and a lamp head device, characterized in that: There is no lighting device installed at the same position on the front of the camera as the horizontal plane of the camera light inlet area, the lamp head device is arranged on the top of the camera, the lamp head device includes a main body and a lamp board, the lamp board is installed on the main body, and the light emitted by the lamp board is toward the shooting direction of the camera, so that the illumination light can be emitted from the top of the camera toward the shooting direction of the camera; the front direction of the main body is consistent with the front direction of the camera, and a lamp holder surface and a light guide groove are provided on the main body, the lamp board is installed on the lamp holder surface, and the light guide groove is connected to the lamp holder surface, so that the light emitted by the lamp board can be emitted from the main body through the light guide groove; the light guide groove is composed of a first side surface, a top surface, a second side surface and a bottom surface connected and enclosed in sequence, the horizontal edges of the top surface and the bottom surface away from the lamp holder surface are parallel to each other, forming a rectangular main light port, so that light can be emitted from the main light port on the front of the main body; the first side surface, the top surface, the second side surface and the bottom surface are connected and enclosed in sequence, and the horizontal edges of the top surface and the bottom surface are parallel to each other away from the lamp holder surface, forming a rectangular main light port, so that light can be emitted from the main light port on the front of the main body; A side surface and a second side surface are symmetrically arranged on both sides of the lamp holder surface, and the first side surface, the lamp holder surface and the second side surface are connected in sequence; the angles formed between the first side surface and the second side surface and the lamp holder surface are side angles, and the angles of the side angles are greater than 90 degrees, so that the first side surface, the second side surface and the lamp holder surface together form an isosceles trapezoidal structure; when the lamp holder device is placed vertically, there is an angle between the top surface and the horizontal plane, and there is also an angle between the bottom surface and the horizontal plane; the oblique edge of the first side surface away from the lamp holder surface is connected with the side edge of the top surface and the side edge of the bottom surface respectively to form a first side light port, and the oblique edge of the second side surface away from the lamp holder surface is connected with the side edge of the top surface and the side edge of the bottom surface respectively to form a second side light port, and the first side light port and the second side light port are respectively located on the two side surfaces of the main body, so that light can be emitted from the two side light ports on both sides of the main body.

2. The underwater camera device according to claim 1, wherein: A reflective cover is further provided at a horizontal edge position of the top surface away from one end of the lamp holder surface. The reflective cover is formed by the horizontal edge structure of the top surface extending horizontally toward the outer side of the front surface of the main body.

3. The underwater camera device according to claim 2, wherein: An inner concave platform structure is provided at a position near the camera on the lower part of the front of the main body, and the outermost vertical plane of the front of the main body and the edge of the front shell of the camera are located in the same plane in the vertical direction.

4. The underwater camera device according to claim 3, characterized in that: When the lamp holder device is placed vertically, the angle between the top surface and the horizontal plane is the top surface angle, and its angle range is 25 degrees to 35 degrees. The angle between the bottom surface and the horizontal plane is the bottom surface angle, and its angle range is 20 degrees to 30 degrees.

5. The underwater camera device according to claim 4, characterized in that: There is an angle between the plane where the top surface is located and the plane where the bottom surface is located.

6. The underwater camera device according to claim 5, characterized in that: When the lamp holder device is placed vertically, the angle of the top surface is 29 degrees, and the angle of the bottom surface is 24 degrees.

7. The underwater camera device according to claim 6, characterized in that: The distance between the horizontal edge of the bottom surface away from the lamp holder surface and the oblique edge of the first side surface away from the lamp holder surface is in a range of 5 mm to 8 mm.

8. The underwater camera device according to claim 7, characterized in that: The first side surface, the second side surface, the top surface, the bottom surface, the inner surface of the reflective cover and the outer surface of the main body are all provided with a reflective coating.

9. The underwater camera device according to claim 8, characterized in that: A plurality of lightless infrared lamps or LED lamps are evenly arranged on the lamp board.

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