Camera lens satisfying day and night imaging

Abstract

The utility model discloses a camera lens satisfying day and night imaging, which is applied to the field of camera lenses, and comprises a shell, two ends of the shell are fixedly provided with end heads, an inner cavity is formed in the shell, the bottom of the shell is communicated with a cylinder, the inner part of the cylinder is slidably connected with a piston, and the piston is connected with a piston rod. An adjusting hole is formed in the bottom of the barrel body, when the camera lens is used, the inner cavity is a cavity between the two end heads and forms a whole with air in the cavity, and along with the change of weather temperature, the air in the inner cavity and the cavity expands with heat and contracts with cold, and the adjusting hole is matched with the adjusting cavity to adjust the air for use, so that the service life of the camera lens is prolonged. By means of the arrangement, the sealing effect of the inner cavity is guaranteed, meanwhile, gas adjustment can be conveniently conducted according to thermal expansion and cold contraction, the state of the lens is guaranteed, the barrel is arranged on the surface of the shell, and imaging use of the lens is not affected.

Description

Technical Field

[0001] The utility model relates to the field of camera lenses, in particular to a camera lens that meets day and night imaging requirements. Background Art

[0002] As video surveillance is used more and more widely in the civilian field, the application environment is becoming more and more complex. One of the most important application requirements is 24-hour uninterrupted monitoring. Since color imaging generally requires higher brightness, and the actual environment may not be able to meet this requirement, the camera low-light technology (also called night vision technology) has emerged accordingly, and cameras that can achieve day and night conversion have been born. Due to different monitoring needs, different application technologies have emerged.

[0003] At present, there is a Chinese utility model with the announcement number CN208076900U. The utility model discloses a camera lens, which solves the problem that the camera lens in the prior art will produce water vapor due to the loose sealing of the sealed chamber due to the alternation of cold and warm, which will affect the normal use of the camera lens and is inconvenient to use at night or in a dark light environment. The utility model includes a camera lens body and a fill light mechanism; the camera lens body is provided with a lens cover, a lens, a packaged breathable membrane cover, an annular cylinder barrel, a cylinder piston, a sealed chamber, a breathable chamber and a mounting groove, and the fill light mechanism includes a protective cover, a transparent glass and a fill light LED lamp. The utility model has a simple structure, a scientific and reasonable design, and is easy to use. Long-term use in a cold and warm alternating environment can effectively maintain the sealing performance of the sealed chamber, and it can be conveniently used at night or in a dark light environment.

[0004] The camera lens has the beneficial effect of effectively maintaining the sealing performance of the sealing chamber when used in a cold and warm alternating environment for a long time. However, during use, lenses are installed layer by layer inside the camera lens. The existence of the annular cylinder barrel and the cylinder piston will affect the imaging effect of the camera lens. At the same time, when the protective cover is used, the lens is often removed for use, which leads to the accidental loss of the protective cover, increasing the cost of frequently purchasing the protective cover, and also brings certain hidden dangers to the lens that loses the protective cover. Utility Model Content

[0005] The utility model aims to provide a camera lens that can meet the requirements of day and night imaging, which has the advantages of reducing the influence on the lens imaging and facilitating the removal of the protective cover to reduce accidental loss.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: a camera lens that meets the requirements of day and night imaging, including a shell, both ends of the shell are fixedly installed with end heads, an inner cavity is formed inside the shell, the bottom of the shell is connected to a cylinder, a piston is slidably connected to the inside of the cylinder, an adjustment hole is opened at the bottom of the cylinder, a protective cover is sleeved on the surface of the end head located at one end of the shell, both ends of one side of the protective cover are fixedly installed with connecting rods, one end of the connecting rod is provided with a tube body fixedly connected to the surface of the shell, the inside of the tube body is provided with a guide rod that penetrates to one end of the tube body, and the surface of the guide rod is fixedly sleeved with a spring that is fixedly connected to the inside of the tube body.

[0007] By adopting the above technical scheme, when the camera lens is used, the inner cavity is the cavity between the two ends, and forms a whole with the air in the cavity. As the weather temperature changes, the inner cavity and the air in the cavity expand and contract with each other, and the adjustment hole cooperates with the adjustment cavity to adjust the gas. While ensuring the sealing effect of the inner cavity through this arrangement, it is also convenient to adjust the gas according to thermal expansion and contraction to ensure the state of the lens. The cylinder is arranged on the surface of the shell and does not affect the imaging use of the lens. When the camera lens is used for imaging, the protective cover is pulled to one side so that the connecting rod drives the guide rod to move inside the tube body, and the spring contracts at the same time. After the protective cover is removed from the end surface, the connecting rod and the protective cover can be rotated at the shaft to bend the protective cover upward. At this time, the lens is exposed to achieve imaging use, and when the force on the protective cover is cancelled, the spring is extended, the protective cover contacts the bottom of the end, and the protective cover is prevented from shaking.

[0008] The utility model is further configured as follows: a lens is embedded in the interior of the end.

[0009] By adopting the above technical solution, the lens is used in conjunction with the camera lens for imaging.

[0010] The utility model is further configured as follows: a cavity and an adjusting cavity are respectively formed inside the cylinder and on both sides of the piston.

[0011] By adopting the above technical solution, the cavity and the regulating cavity are respectively used in conjunction with the piston for movement.

[0012] The utility model is further configured that: the cavity and the inner cavity are communicated with each other.

[0013] By adopting the above technical solution, the air in the cavity and the inner cavity form a whole through mutual communication.

[0014] The utility model is further configured that: the adjustment cavity and the adjustment hole are used in coordination with each other.

[0015] By adopting the above technical solution, the regulating hole cooperates with the regulating cavity to regulate the gas.

[0016] The utility model is further configured as follows: the guide rod and the connecting rod are rotatably connected to each other via a rotating shaft.

[0017] By adopting the above technical solution, the rotational connection enables the angle rotation adjustment between the guide rod and the connecting rod.

[0018] The utility model is further configured as follows: a contact ring is fixedly adhered to the inner side of the protection cover.

[0019] By adopting the above technical solution, the contact ring increases the contact between the protective cover and the terminal.

[0020] The utility model is further configured as follows: an anti-skid convex ring is fixedly sleeved on the surface of the protection cover.

[0021] By adopting the above technical solution, the anti-skid convex ring increases the friction force on the surface of the protective cover.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. When the camera lens of the utility model is used, the inner cavity is a cavity between two ends, and forms a whole with the air in the cavity. With the change of weather temperature, the inner cavity and the air in the cavity expand and contract with each other. The adjustment hole cooperates with the adjustment cavity to adjust the gas. This arrangement ensures the sealing effect of the inner cavity and facilitates the gas adjustment according to the thermal expansion and contraction to ensure the state of the lens. The cylinder is arranged on the surface of the shell and does not affect the imaging use of the lens.

[0024] 2. When the camera lens is used for imaging, the utility model pulls the protective cover to one side, so that the connecting rod drives the guide rod to move inside the tube body, and the spring contracts at the same time. After the protective cover is removed from the surface of the end, the connecting rod and the protective cover can be rotated at the shaft to bend the protective cover upward. At this time, the lens is exposed to achieve imaging. When the force on the protective cover is cancelled, the spring is stretched, the protective cover contacts the bottom of the end, and shaking of the protective cover is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a front view cross-sectional schematic diagram of the utility model;

[0027] Figure 3 It is a top view cross-sectional schematic diagram of the utility model;

[0028] Figure 4It is a front view schematic diagram of the protective cover in the utility model.

[0029] Figure numerals: 1. shell; 2. inner cavity; 3. cylinder; 4. cavity; 5. piston; 6. adjusting chamber; 7. adjusting hole; 8. protective cover; 9. contact ring; 10. tube body; 11. guide rod; 12. spring; 13. connecting rod; 14. anti-slip convex ring; 15. lens; 16. end. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0031] Embodiment 1:

[0032] refer to Figures 1 to 4 A camera lens that meets the requirements of day and night imaging includes a shell 1, both ends of the shell 1 are fixedly mounted with end caps 16, an inner cavity 2 is formed inside the shell 1, the bottom of the shell 1 is connected with a cylinder 3, the inside of the cylinder 3 is slidably connected with a piston 5, and an adjustment hole 7 is opened at the bottom of the cylinder 3. When the camera lens is used, the inner cavity 2 is a cavity between the two end caps 16, and forms a whole with the air in the cavity 4. With the change of weather temperature, the air in the inner cavity 2 and the cavity 4 expands and contracts with heat, and the adjustment hole 7 cooperates with the adjustment cavity 6 to adjust the gas. Through this arrangement, the sealing effect of the inner cavity 2 is ensured, and the gas is adjusted according to the thermal expansion and contraction, so as to ensure the state of the lens 15. Moreover, the cylinder 3 is arranged on the surface of the shell 1, and does not affect the imaging use of the lens 15.

[0033] refer to Figure 2 A lens 15 is embedded in the end 16, and the lens 15 is used in conjunction with the camera lens for imaging.

[0034] refer to Figure 2 A cavity 4 and an adjusting cavity 6 are formed inside the cylinder 3 and on both sides of the piston 5, respectively. The cavity 4 and the adjusting cavity 6 cooperate with the piston 5 for movement.

[0035] refer to Figure 2 The cavity 4 and the inner cavity 2 are interconnected, and the air in the cavity 4 and the inner cavity 2 form a whole through the interconnection.

[0036] refer to Figure 2 The regulating chamber 6 and the regulating hole 7 cooperate with each other, and the regulating hole 7 cooperates with the regulating chamber 6 to regulate the gas.

[0037] Brief description of the use process: when the camera lens is used, the inner cavity 2 is a cavity between the two end heads 16, and forms a whole with the air in the cavity 4. As the weather temperature changes, the air in the inner cavity 2 and the cavity 4 expands and contracts. When the air in the inner cavity 2 and the cavity 4 expands, the piston 5 moves toward the outer end of the cylinder 3, and the adjustment cavity 6 becomes smaller. When the air in the inner cavity 2 and the cavity 4 shrinks, the piston 5 moves toward the end of the shell 1, and the adjustment cavity 6 becomes larger. The adjustment hole 7 cooperates with the adjustment cavity 6 to adjust the gas. This setting ensures the sealing effect of the inner cavity 2 while facilitating gas adjustment according to thermal expansion and contraction to ensure the state of the lens 15. The cylinder 3 is set on the surface of the shell 1 and does not affect the imaging use of the lens 15. In addition, the camera lens that meets day and night imaging has a focal length of 1000mm during use. At the maximum focal length, the MTF50 is greater than 1000, and the F value range is greater than 3.5-16.

[0038] refer to Figure 1 and Figure 4 , a camera lens that meets the requirements of day and night imaging, includes a shell 1, a protective cover 8 is sleeved on the surface of an end head 16 at one end of the shell 1, and connecting rods 13 are fixedly installed on both ends of one side of the protective cover 8. One end of the connecting rod 13 is provided with a tube body 10 fixedly connected to the surface of the shell 1, and the interior of the tube body 10 is provided with a guide rod 11 that penetrates to one end of the tube body 10. The surface of the guide rod 11 is fixedly sleeved with a spring 12 fixedly connected to the inside of the tube body 10. When the camera lens is used for imaging, the protective cover 8 is pulled to one side so that the connecting rod 13 drives the guide rod 11 to move inside the tube body 10, and the spring 12 contracts. After the protective cover 8 is removed from the surface of the end head 16, the connecting rod 13 and the protective cover 8 can be rotated at the rotating shaft to bend the protective cover 8 upward. At this time, the lens 15 is exposed to achieve imaging use, and when the force applied to the protective cover 8 is canceled, the spring 12 is stretched, the protective cover 8 contacts the bottom of the end head 16, and the protective cover 8 is prevented from shaking.

[0039] refer to Figure 1 The guide rod 11 and the connecting rod 13 are rotatably connected to each other via a rotating shaft, and the rotatable connection enables the guide rod 11 and the connecting rod 13 to achieve angular rotation adjustment.

[0040] refer to Figure 3 A contact ring 9 is fixedly bonded to the inner side of the protective cover 8 , and the contact ring 9 increases the contact between the protective cover 8 and the end 16 .

[0041] refer to Figure 4 The surface of the protective cover 8 is fixedly sleeved with an anti-skid convex ring 14, which increases the friction force on the surface of the protective cover 8.

[0042] Brief description of the usage process: When the camera lens is used for imaging, the protective cover 8 is pulled to one side so that the connecting rod 13 drives the guide rod 11 to move inside the tube body 10, and the spring 12 contracts. After the protective cover 8 is removed from the surface of the end 16, the connecting rod 13 and the protective cover 8 can be rotated at the shaft to bend the protective cover 8 upward. At this time, the lens 15 is exposed to achieve imaging. When the force on the protective cover 8 is cancelled, the spring 12 is extended, the protective cover 8 contacts the bottom of the end 16, and the protective cover 8 is prevented from shaking. At the same time, the contact ring 9 increases the contact between the protective cover 8 and the end 16, and the anti-slip convex ring 14 increases the friction on the surface of the protective cover 8.

[0043] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A camera lens that meets day and night imaging requirements, comprising a housing (1), characterized in that: End caps (16) are fixedly mounted at both ends of the shell (1), an inner cavity (2) is formed inside the shell (1), the bottom of the shell (1) is connected to a cylinder (3), a piston (5) is slidably connected inside the cylinder (3), an adjustment hole (7) is provided at the bottom of the cylinder (3), a protective cover (8) is sleeved on the surface of the end cap (16) at one end of the shell (1), connecting rods (13) are fixedly mounted on both ends of one side of the protective cover (8), one end of the connecting rod (13) is provided with a tube body (10) fixedly connected to the surface of the shell (1), the inside of the tube body (10) is provided with a guide rod (11) penetrating to one end of the tube body (10), and the surface of the guide rod (11) is fixedly sleeved with a spring (12) fixedly connected to the inside of the tube body (10).

2. The camera lens that satisfies day and night imaging according to claim 1, characterized in that: A lens (15) is embedded in the interior of the end head (16).

3. The camera lens that satisfies day and night imaging according to claim 1, characterized in that: A cavity (4) and an adjustment cavity (6) are respectively formed inside the cylinder (3) and on both sides of the piston (5).

4. The camera lens that satisfies day and night imaging according to claim 3, characterized in that: The cavity (4) and the inner cavity (2) are communicated with each other.

5. The camera lens that satisfies day and night imaging according to claim 3, characterized in that: The regulating cavity (6) and the regulating hole (7) are used in coordination with each other.

6. The camera lens that satisfies day and night imaging according to claim 1, characterized in that: The guide rod (11) and the connecting rod (13) are rotatably connected to each other via a rotating shaft.

7. The camera lens that satisfies day and night imaging according to claim 1, characterized in that: A contact ring (9) is fixedly bonded to the inner side of the protective cover (8).

8. The camera lens that satisfies day and night imaging according to claim 1, characterized in that: An anti-slip convex ring (14) is fixedly sleeved on the surface of the protective cover (8).

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