Optical athermalization lens with anti-fog function

Abstract

The utility model discloses an optical athermalization lens with an anti-fog function, which comprises a lens cone, a shell and a dehumidification mechanism, fixing mechanisms which are distributed front and back are arranged in the shell, a heating bag is arranged between the interiors of the two fixing mechanisms, a heating wire is arranged in the heating bag, and the heating bag is arranged outside the lens cone in a sleeving mode; and the dehumidification mechanism is arranged at the front end of the shell. The optical athermalization lens further comprises a protective shell, the protective shell is arranged at the upper end of the outer arc face of the shell, a single-chip microcomputer is arranged on the bottom wall of the protective shell, the input end of the single-chip microcomputer is electrically connected with an external power source, the input end of the heating wire is electrically connected with the output end of the single-chip microcomputer, and the fixing mechanism comprises a fixing bolt. The antifogging of the optical athermalized lens is realized by automatically controlling the heating of the shell and the dehumidification of the outside of the lens.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lenses, in particular to an optically athermalized lens with an anti-fog function. Background Technique

[0002] An athermalized infrared lens, as the name implies, is an infrared lens that does not generate heat. Ordinary infrared lenses generate heat during operation, which may affect the accuracy of experiments or observations. The athermalized infrared lens adopts special designs and materials, which can effectively avoid heat generation, thus maintaining the stability of the ambient temperature.

[0003] The anti-fog treatment of optically athermalized lenses is rather troublesome. When the lens is taken out and comes into contact with the outside world, and there is a large temperature difference, water mist is generated inside the lens barrel. It needs to be directly exposed to the sun to remove the fog, which takes a long time and there is a possibility of burning out internal components. The anti-fog of the lens usually uses anti-fog spray, but improper use may leave water marks on the outside of the lens, affecting photography. For this reason, we propose an optically athermalized lens with an anti-fog function. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide an optically athermalized lens with an anti-fog function. By automatically controlling the heating of the outer shell and the dehumidification outside the lens, the anti-fog of the optically athermalized lens is realized, which is more convenient and worry-free, and can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An optically athermalized lens with an anti-fog function, including a lens barrel, a lens is arranged inside the lens barrel, and further includes an outer shell and a dehumidification mechanism;

[0006] Outer shell: A fixing mechanism is arranged inside it and distributed front and back. Between the two fixing mechanisms, a heating bag is arranged. A heating wire is arranged inside the heating bag, and the heating bag is sleeved outside the lens barrel;

[0007] Dehumidification mechanism: It is arranged at the front end of the outer shell.

[0008] Among them: It further includes a protective shell, the protective shell is arranged at the upper end of the outer arc surface of the outer shell, a single-chip microcomputer is arranged on the bottom wall of the protective shell, the input end of the single-chip microcomputer is electrically connected to an external power supply, and the input end of the heating wire is electrically connected to the output end of the single-chip microcomputer. By automatically controlling the heating of the outer shell and the dehumidification outside the lens, the anti-fog of the optically athermalized lens is realized.

[0009] Furthermore, the fixing mechanism includes fixing bolts, and the front and rear ends of the outer shell are both threadedly connected with evenly distributed fixing bolts to realize the fixation of the lens barrel.

[0010] Further, the fixing mechanism further includes spring pieces and positioning grooves. Positioning grooves are provided at both the front and rear ends of the inner wall of the housing. Symmetrically distributed spring pieces are clamped inside the positioning grooves. The studs of the fixing bolts are respectively in contact with the outer arc surfaces of the adjacent spring pieces. The heating bag is located between the two positioning grooves to prevent the fixing bolts from pressing on the heating wire.

[0011] Further, the fixing mechanism further includes positioning rings. Positioning rings are provided at both the front and rear ends of the inner wall of the housing. The positioning grooves are both located inside the two positioning rings. The heating bag is located inside the two positioning rings to achieve air circulation at the lens position.

[0012] Further, the dehumidifying mechanism includes a sleeve and an air duct cover. The front end of the housing is externally threadedly connected with a sleeve. The front end of the sleeve is fixedly connected with an air duct cover. An annular air duct is formed inside the whole formed by the air duct cover and the sleeve.

[0013] Further, the dehumidifying mechanism includes an air pump, a filter screen and a filter screen fixing plate. The upper end of the outer arc surface of the sleeve is fixedly connected with an air pump. The air outlet of the air pump is communicated with the annular air duct. The upper end of the air pump is connected with a filter screen fixing plate by bolts. A filter screen is arranged on the top wall of the filter screen fixing plate. The input end of the air pump is electrically connected to the output end of the single-chip microcomputer to realize the feeding of external clean air.

[0014] Further, the upper end of the protective shell is fixedly connected with an end cover. A temperature and humidity sensor is arranged on the upper surface of the end cover. The temperature and humidity sensor is bidirectionally electrically connected to the single-chip microcomputer to detect the external temperature and humidity.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: This optical athermalized lens with an anti-fog function has the following advantages:

[0016] After the power is turned on, the temperature and humidity sensor detects the external temperature and humidity and feeds it back to the single-chip microcomputer. If the external temperature is relatively high, the single-chip microcomputer turns on the heating wire, and the heating wire heats the lens barrel, quickly raising the temperature of the lens barrel to prevent water vapor from condensing inside the lens barrel. When the humidity is relatively high, the single-chip microcomputer turns on the air pump to send the clean external air passing through the filter screen into the annular air duct. Then the air blows out from the annular air duct, accelerating the air circulation speed at the lens at the front end of the lens barrel, reducing the residence time of moisture. The outlet of the annular air duct faces away from the lens to prevent the humid air from directly blowing on the lens, realizing anti-fog on the outside of the lens barrel. Through the automatic control of the single-chip microcomputer to quickly heat the lens barrel or dehumidify the outside of the lens barrel, the anti-fog of the optical athermalized lens is realized, which is more worry-free and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2Schematic cross-sectional structure diagram of the present utility model;

[0019] Figure 3 Schematic cross-sectional structure diagram of the outer shell of the present utility model;

[0020] Figure 4 Schematic structure diagram of the heating bag of the present utility model.

[0021] In the figure: 1 lens, 2 lens barrel, 3 outer shell, 4 fixing mechanism, 41 fixing bolt, 42 spring piece, 43 positioning groove, 44 positioning ring, 5 dehumidifying mechanism, 51 sleeve, 52 air pump, 53 filter screen, 54 filter screen fixing plate, 55 air duct cover, 6 protective shell, 7 single-chip microcomputer, 8 end cover, 9 temperature and humidity sensor, 10 heating bag, 11 heating wire. Specific implementation manners

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4 , this embodiment provides a technical solution: an optical athermalized lens with an anti-fog function, including a lens barrel 2, a lens 1 is arranged inside the lens barrel 2, and further includes an outer shell 3 and a dehumidifying mechanism 5;

[0024] Outer shell 3: A fixing mechanism 4 is arranged inside it and is distributed front and back. Between the interiors of the two fixing mechanisms 4, a heating bag 10 is arranged. Inside the heating bag 10, a heating wire 11 is arranged. The heating bag 10 is sleeved outside the lens barrel 2. The fixing mechanism 4 includes fixing bolts 41. Fixing bolts 41 evenly distributed are threadedly connected to both the front and rear ends of the outer shell 3. The fixing mechanism 4 further includes spring pieces 42 and positioning grooves 43. Positioning grooves 43 are provided at both the front and rear ends of the inner wall of the outer shell 3. Symmetrically distributed spring pieces 42 are clamped inside the positioning grooves 43. The studs of the fixing bolts 41 are in contact with the outer arc surfaces of the adjacent spring pieces 42. The heating bag 10 is located between the two positioning grooves 43. The fixing mechanism 4 further includes positioning rings 44. Positioning rings 44 are provided at both the front and rear ends of the inner wall of the outer shell 3. The positioning grooves 43 are all located inside the two positioning rings 44. The heating bag 10 is located inside the two positioning rings 44. The outer shell 3 is sleeved outside the lens barrel 2. After determining the position of the lens barrel 2 inside the outer shell 3, the fixing bolts 41 are tightened. The studs of the fixing bolts 41 push the spring pieces 42 inward towards the central axis position of the outer shell 3. The spring pieces 42 press the heating bag 10 tightly, and the heating bag 10 clings to the outside of the lens barrel 2, realizing the fixation of the lens barrel 2. The spring pieces 42 prevent the studs of the fixing bolts 41 from pressing and damaging the heating bag 10. After the power is turned on, the temperature and humidity sensor 9 detects the external temperature and humidity and feeds it back to the single-chip microcomputer 7. If the external temperature is relatively high, the single-chip microcomputer 7 turns on the heating wire 11, and the heating wire 11 heats the lens barrel 2, quickly increasing the temperature of the lens barrel 2 and preventing water vapor from condensing inside the lens barrel 2;

[0025] Dehumidifying mechanism 5: It is arranged at the front end of the outer shell 3. The dehumidifying mechanism 5 includes a sleeve 51 and an air duct cover 55. The sleeve 51 is threadedly connected to the outside of the front end of the outer shell 3. The front end of the sleeve 51 is fixedly connected to the air duct cover 55. An annular air duct is formed inside the whole formed by the air duct cover 55 and the sleeve 51. The dehumidifying mechanism 5 includes an air pump 52, a filter screen 53, and a filter screen fixing plate 54. The upper end of the outer arc surface of the sleeve 51 is fixedly connected to the air pump 52. The air outlet of the air pump 52 is communicated with the annular air duct. The upper end of the air pump 52 is connected to the filter screen fixing plate 54 by bolts. A filter screen 53 is arranged on the top wall of the filter screen fixing plate 54. The input end of the air pump 52 is electrically connected to the output end of the single-chip microcomputer 7. When the humidity is relatively high, the single-chip microcomputer 7 turns on the air pump 52 to send the clean external air passing through the filter screen 53 into the annular air duct. Then the air blows out from the annular air duct, accelerating the air circulation speed at the front end of the lens 1 of the lens barrel 2, reducing the residence time of moisture, and the outlet of the annular air duct faces away from the lens 1, preventing the wet air from directly blowing on the lens 1, realizing anti-fogging outside the lens barrel 2.

[0026] Among them: It further includes a protective shell 6, which is arranged at the upper end of the outer arc surface of the outer shell 3. A single-chip microcomputer 7 is arranged on the bottom wall of the protective shell 6. The input end of the single-chip microcomputer 7 is electrically connected to an external power supply, and the input end of the heating wire 11 is electrically connected to the output end of the single-chip microcomputer 7. The upper end of the protective shell 6 is fixedly connected with an end cover 8, and a temperature and humidity sensor 9 is arranged on the upper surface of the end cover 8. The temperature and humidity sensor 9 is bidirectionally electrically connected to the single-chip microcomputer 7.

[0027] The working principle of an optical athermalized lens with an anti-fog function provided by the present invention is as follows: The outer shell 3 is sleeved outside the lens barrel 2. After determining the position of the lens barrel 2 inside the outer shell 3, the fixing bolt 41 is tightened. The stud of the fixing bolt 41 pushes the spring piece 42 inward towards the central axis position of the outer shell 3, and the spring piece 42 presses the heating bag 10 tightly. The heating bag 10 is closely attached to the outside of the lens barrel 2 to fix the lens barrel 2. The spring piece 42 prevents the stud of the fixing bolt 41 from pressing and damaging the heating bag 10. After the power is turned on, the temperature and humidity sensor 9 detects the external temperature and humidity and feeds it back to the single-chip microcomputer 7. If the external temperature is relatively high, the single-chip microcomputer 7 turns on the heating wire 11, and the heating wire 11 heats the lens barrel 2 to quickly increase the temperature of the lens barrel 2 and prevent the condensation of water vapor inside the lens barrel 2. When the humidity is relatively high, the single-chip microcomputer 7 turns on the air pump 52 to send the clean external air passing through the filter screen 53 into the annular air duct. Then the air blows out from the annular air duct to accelerate the air flow speed at the lens 1 at the front end of the lens barrel 2 and reduce the residence time of moisture. The outlet of the annular air duct faces away from the lens 1 to prevent the humid air from directly blowing on the lens 1, thus realizing anti-fogging outside the lens barrel 2.

[0028] It should be noted that, in the above embodiments, the single-chip microcomputer 7 disclosed can be an STM32F103VET6 microcontroller, the air pump 52 can be an MZB3004T04 micro fan, and the temperature and humidity sensor 9 can be an HDC1080DMBR temperature and humidity sensor. The single-chip microcomputer 7 controls the heating wire 11, the air pump 52, and the temperature and humidity sensor 9 to work using common methods in the prior art.

[0029] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. An optical athermal lens with anti-fog function, comprising a lens barrel (2), wherein a lens (1) is arranged inside the lens barrel (2), characterized in that: It also includes a housing (3) and a dehumidification mechanism (5); The housing (3) is provided with fixing mechanisms (4) arranged front and back, a heating bag (10) is arranged between the two fixing mechanisms (4), a heating wire (11) is arranged inside the heating bag (10), and the heating bag (10) is sleeved on the outside of the lens barrel (2); Dehumidification mechanism (5): it is arranged at the front end of the housing (3); The invention further comprises a protective shell (6), wherein the protective shell (6) is arranged at the upper end of the outer arc surface of the outer shell (3), and a single-chip computer (7) is arranged on the bottom wall of the protective shell (6), the input end of the single-chip computer (7) is electrically connected to an external power supply, and the input end of the heating wire (11) is electrically connected to the output end of the single-chip computer (7).

2. The optical athermal lens with anti-fog function according to claim 1, characterized in that: The fixing mechanism (4) comprises fixing bolts (41), and the front and rear ends of the housing (3) are both threadedly connected with evenly distributed fixing bolts (41).

3. The optical athermal lens with anti-fog function according to claim 2, characterized in that: The fixing mechanism (4) further comprises a spring sheet (42) and a positioning groove (43). The front and rear ends of the inner wall of the housing (3) are provided with positioning grooves (43). The interiors of the positioning grooves (43) are clamped with symmetrically distributed spring sheets (42). The studs of the fixing bolts (41) are respectively in contact with the outer arc surfaces of adjacent spring sheets (42). The heating bag (10) is located between the interiors of the two positioning grooves (43).

4. The optical athermal lens with anti-fog function according to claim 2, characterized in that: The fixing mechanism (4) further comprises a positioning ring (44), the front and rear ends of the inner wall of the outer shell (3) are both provided with a positioning ring (44), the positioning grooves (43) are both located inside the two positioning rings (44), and the heating bag (10) is located inside the two positioning rings (44).

5. The optical athermal lens with anti-fog function according to claim 1, characterized in that: The dehumidification mechanism (5) comprises a sleeve (51) and an air duct cover (55); the front end of the housing (3) is externally threadedly connected to the sleeve (51); the front end of the sleeve (51) is fixedly connected to the air duct cover (55); the air duct cover (55) and the sleeve (51) form a circular air duct inside the whole.

6. The optical athermal lens with anti-fog function according to claim 5, characterized in that: The dehumidification mechanism (5) comprises an air pump (52), a filter (53) and a filter fixing plate (54); the upper end of the outer arc surface of the sleeve (51) is fixedly connected to the air pump (52); the air outlet of the air pump (52) is connected to the annular air duct; the upper end of the air pump (52) is connected to the filter fixing plate (54) by bolts; the top wall of the filter fixing plate (54) is provided with a filter (53); and the input end of the air pump (52) is electrically connected to the output end of the single-chip computer (7).

7. The optical athermal lens with anti-fog function according to claim 1, characterized in that: The upper end of the protective shell (6) is fixedly connected to an end cover (8), the upper surface of the end cover (8) is provided with a temperature and humidity sensor (9), and the temperature and humidity sensor (9) is bidirectionally electrically connected to the single-chip computer (7).

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