All-weather imaging lens device

Abstract

The utility model relates to the technical field of optical lenses, in particular to an all-weather imaging lens device. Comprising a mounting sleeve, the left side of the mounting sleeve is an incident end, and the right side of the mounting sleeve is an emergent end; the fixing sleeve, the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the filter lens are linearly arrayed on the mounting sleeve. Through the lens distribution, all-weather use can be realized, and the manufacturing cost of the lens device is low; by integrating all the lenses and arranging and installing the lenses in an embedding mode, the whole size is small, and the camera is especially suitable for all-weather monitoring. By adopting the structure of the utility model, on the premise that the small view field and higher detail resolution capability of the lens are maintained, and the lens is small in size, light in weight and low in cost, the confocal effect of visible light, infrared light and near-infrared light is realized, and the imaging quality requirements of all weather, environmental factor interference resistance and high resolution are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical lenses, and particularly relates to an all-weather imaging lens device. Background Art

[0002] Patent No. CN115793209B discloses a monitoring lens, wherein: a monitoring lens includes a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power, an aperture, a fifth lens with positive refractive power, a first flat glass, and a second flat glass, which are arranged in sequence from the object side to the image side; wherein, -2 ≤ f2 / f < -0.5, 1.5 ≤ f5 / < 2; wherein, f is the total focal length of the lens, f2 is the focal length of the second lens, and f5 is the focal length of the fifth lens. The present invention realizes a monitoring lens with low cost and high imaging quality.

[0003] The above-mentioned monitoring lens has a large volume, a small target surface, a high manufacturing cost, and is not suitable for day and night use, so it is not suitable for all-weather monitoring. Content of the Utility Model

[0004] The utility model provides an all-weather imaging lens device to solve the technical problems such as large volume, small target surface, high cost, and non-day-and-night sharing in the prior art.

[0005] To achieve the above object, the utility model is realized through the following technical solutions:

[0006] The present application provides an all-weather imaging lens device, which includes an incident end, an exit end, and further includes an installation sleeve arranged on the connection line between the incident end and the exit end, and

[0007] a fixing sleeve, located on the side close to the incident end;

[0008] a first lens, located on the side of the fixing sleeve away from the incident end;

[0009] a second lens, located on the side of the first lens away from the fixing sleeve;

[0010] a third lens, located on the side of the second lens away from the first lens;

[0011] a filter, located on the side close to the exit end;

[0012] a fourth lens, located on the side of the filter away from the exit end;

[0013] a fifth lens, located between the fourth lens and the filter,

[0014] Among them, the third lens is a convex-convex lens, the fourth lens is a concave-concave lens, and the side of the third lens close to the fourth lens is embedded in the side of the fourth lens close to the third lens.

[0015] An all-weather imaging lens device of the present utility model can solve the problems of large volume and small target surface in the prior art. Moreover, through the above lens distribution, it can be used all-weather, and the manufacturing cost of this lens device is low; by integrating each lens and arranging and installing the lenses in an inlaid manner, the overall volume is small, which is especially suitable for all-weather monitoring.

[0016] In some embodiments, the first lens is a concave-concave lens, including a first concave portion and a second concave portion distributed in the direction from the incident end to the exit end.

[0017] Thus, the first lens is composed of the above structure.

[0018] In some embodiments, the second lens is a convex-concave lens, including a third concave portion and a first convex portion distributed in the direction from the incident end to the exit end.

[0019] Thus, the second lens is composed of the above structure.

[0020] In some embodiments, an all-weather imaging lens device further includes a first bracket, and the first bracket is arranged in the mounting sleeve and located between the second lens and the third lens.

[0021] The first convex portion on the side of the second lens close to the third lens is embedded in the first bracket.

[0022] Thus, the lens device is provided with a first bracket, and the relative relationship between the second lens and the third lens is adjusted through the first bracket.

[0023] In some embodiments, the third lens includes a second convex portion and a third convex portion distributed in the direction from the incident end to the exit end;

[0024] The third convex portion is embedded in the side of the fourth lens.

[0025] Thus, the third lens is composed of the above structure.

[0026] In some embodiments, the fourth lens includes a fourth concave portion and a fifth concave portion distributed in the direction from the incident end to the exit end;

[0027] The side of the third lens close to the fourth lens is embedded in the fourth concave portion.

[0028] Thus, the fourth lens is composed of the above structure.

[0029] In some embodiments, the fifth lens is a convex-convex lens, including a fourth convex portion and a fifth convex portion distributed in the direction from the incident end to the exit end;

[0030] A part of the fourth convex portion on the side of the fifth lens close to the fourth lens is embedded in the fifth concave portion on the fourth lens close to the fifth lens.

[0031] Thus, the fifth lens is composed of the above structure.

[0032] In some embodiments, an all-weather imaging lens device further includes a second bracket, and the second bracket is disposed in the mounting sleeve and located between the fourth lens and the fifth lens;

[0033] A part of the fourth convex portion on the side of the fifth lens close to the fourth lens is embedded in the second bracket.

[0034] Thus, the lens device is provided with a second bracket, and the relative relationship between the fourth lens and the fifth lens is adjusted through the second bracket.

[0035] In some embodiments, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are all plastic lenses.

[0036] Thus, plastic lenses are preferably used.

[0037] The specific embodiment of the beneficial effect of the present utility model is as follows: adopting the structure of the present utility model can meet the imaging quality requirements of all-weather, anti-environmental factor interference, and high resolution while maintaining the high detail resolution ability of the small field of view of the lens and the small size and light weight of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0039] Figure 1 It is a schematic three-dimensional structure diagram of an all-weather imaging lens device of the present utility model.

[0040] Figure 2 It is a schematic plan structure diagram of an all-weather imaging lens device of the present utility model.

[0041] Figure 3 It is a schematic three-dimensional structure diagram of an all-weather imaging lens device of the present utility model in an exploded state.

[0042] Figure 4It is a schematic cross-sectional structure diagram in the A-A direction of an all-weather imaging lens device of the present utility model.

[0043] Reference numerals in the figure: 000 - mounting sleeve, 100 - first lens, 101 - first concave portion, 102 - second concave portion,

[0044] 200 - second lens, 201 - third concave portion, 202 - first convex portion, 300 - third lens, 301 - second convex portion, 302 - third convex portion, 400 - fourth lens, 401 - fourth concave portion, 402 - fifth concave portion, 500 - fifth lens, 501 - fourth convex portion, 502 - fifth convex portion, 600 - fixing sleeve, 700 - filter, 800 - first bracket, 900 - second bracket. Specific embodiments

[0045] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0046] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application.

[0047] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "plurality" is two or more.

[0048] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "mounting", "connecting", and "coupling" should be understood in a broad sense. For example, it can be welding, bolt connection, or riveting; it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0049] Figures 1-3It shows the technical problems in the prior art that an all-weather imaging lens device needs to solve, such as large volume, small target surface, high cost, and not being shared day and night. An all-weather imaging lens device includes a mounting sleeve 000, a fixing sleeve 600, a first lens 100, a second lens 200, a third lens 300, a fourth lens 400, a fifth lens 500, and a filter lens 700. The incident end is on the left side of the mounting sleeve 000, and the exit end is on the right side of the mounting sleeve 000; the fixing sleeve 600, the first lens 100, the second lens 200, the third lens 300, the fourth lens 400, the fifth lens 500, and the filter lens 700 are all arranged on the mounting sleeve 000.

[0050] Combined with Figure 3 , the fixing sleeve 600 is located on the side close to the incident end, and the filter lens 700 is located on the side close to the exit end; the first lens 100, the second lens 200, the third lens 300, the fourth lens 400, and the fifth lens 500 are located between the fixing sleeve 600 and the filter lens 700; the first lens 100, the second lens 200, the third lens 300, the fourth lens 400, and the fifth lens 500 are linearly arrayed in the direction from the incident end to the exit end.

[0051] Through the above lens distribution, it can be used all-weather, and the manufacturing cost of this lens device is low; by integrating each lens and arranging and installing the lenses in an inlaid manner, the overall volume is small, especially suitable for all-weather monitoring.

[0052] Combined with Figures 3-4 , in some embodiments, the first lens 100 is a concave-concave lens, including a first concave portion 101 and a second concave portion 102 distributed in the direction from the incident end to the exit end. The first lens 100 is composed of the above structure.

[0053] Combined with Figures 3-4 , in some embodiments, the second lens 200 is a convex-concave lens, including a third concave portion 201 and a first convex portion 202 distributed in the direction from the incident end to the exit end. The second lens 200 is composed of the above structure.

[0054] Combined with Figures 3-4 , an all-weather imaging lens device further includes a first bracket 800. The first bracket 800 is arranged on the mounting sleeve 000 and is located between the second lens 200 and the third lens 300. The first convex portion 202 on the side of the second lens 200 close to the third lens 300 is embedded in the first bracket 800. This lens device is provided with the first bracket 800 to adjust the relative relationship between the second lens 200 and the third lens 300 through the first bracket 800.

[0055] Combined with Figures 3-4, the third lens 300 includes a second convex portion 301 and a third convex portion 302 distributed in the direction from the incident end to the exit end. The third lens 300 is composed of the above structure.

[0056] Combine Figures 3-4 , the fourth lens 400 includes a fourth concave portion 401 and a fifth concave portion 402 distributed in the direction from the incident end to the exit end. The fourth lens 400 is composed of the above structure.

[0057] Combine Figures 3-4 , the third convex portion 302 on the third lens 300 is inserted into the fourth concave portion 401 by approaching the side surface of the fourth lens 400.

[0058] Combine Figures 3-4 , the fifth lens 500 is a convex-convex lens, including a fourth convex portion 501 and a fifth convex portion 502 distributed in the direction from the incident end to the exit end; a part of the fourth convex portion 501 on the side surface of the fifth lens 500 close to the fourth lens 400 is inserted into the fifth concave portion 402 on the fourth lens 400 close to the fifth lens 500. The fifth lens 500 is composed of the above structure.

[0059] Combine Figures 3-4 , an all-weather imaging lens device further includes a second bracket 900, and the second bracket 900 is disposed in the mounting sleeve 000 and located between the fourth lens 400 and the fifth lens 500; a part of the fourth convex portion 501 on the side surface of the fifth lens 500 close to the fourth lens 400 is inserted into the second bracket 900. The lens device is provided with the second bracket 900, and the relative relationship between the fourth lens 400 and the fifth lens 500 is adjusted through the second bracket 900.

[0060] Preferably, the first lens 100, the second lens 200, the third lens 300, the fourth lens 400, and the fifth lens 500 are all plastic lenses.

[0061] Combine Figure 4 , the fixing sleeve 600, the first lens 100, the second lens 200, the third lens 300, the fourth lens 400, the fifth lens 500, and the filter 700 are in a linear array relationship, the axis lines of the fixing sleeve 600, the first lens 100, the second lens 200, the third lens 300, the fourth lens 400, the fifth lens 500, and the filter 700 are located on the connection line of the incident end and the exit end, and the center points of the convex / concave portions of the first lens 100, the second lens 200, the third lens 300, the fourth lens 400, and the fifth lens 500 are all on this axis line.

[0062] In this embodiment, the total length S1 of the mounting sleeve 000 is 13.69 mm; the distance m1 between the surface of the first lens 100 near the incident end and the farthest end of the sleeve is 12.82 mm; the distance m2 between the center point of the second concave portion 102 of the first lens 100 and the center point of the third concave portion 201 of the second lens 200 is 2.06 mm; the distance S2 between the center point of the third concave portion 201 of the second lens 200 and the farthest end of the sleeve is 9.20 mm; the distance m3 between the center point of the first convex portion 202 of the second lens 200 and the center point of the second convex portion 301 of the third lens 300 is 2.1 mm; the distance S3 between the center point of the second convex portion 301 of the third lens 300 and the farthest end of the sleeve is 4.80 mm; the distance m4 between the center point of the third convex portion 302 of the third lens 300 and the center point of the fourth concave portion 401 of the fourth lens 400 is 0.08 mm; the distance m5 between the center point of the fifth concave portion 402 of the fourth lens 400 and the center point of the fourth convex portion 501 of the fifth lens 500 is 0.08 mm.

[0063] Adopting the structure of the present utility model can achieve confocal of visible light, infrared light and near-infrared light (i.e., dual-purpose day and night) on the premise of maintaining high detail resolution ability of the small field of view of the lens, small volume, light weight and cost reduction of the lens, and meet the imaging quality requirements of all-weather, anti-environmental factor interference and high resolution.

[0064] The above is only the specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope recorded in the present utility model can easily think of changes or substitutions, which should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. An all-weather imaging lens device, comprising an incident end and an exit end, characterized in that, It further includes a mounting sleeve (000) provided on the connection line between the incident end and the exit end, and a fixing sleeve (600) located on the side closer to the incident end; a first lens (100) located on the side of the fixing sleeve (600) away from the incident end; a second lens (200) located on the side of the first lens (100) away from the fixing sleeve (600); a third lens (300) located on the side of the second lens (200) away from the first lens (100); a filter lens (700) located on the side closer to the exit end; a fourth lens (400) located on the side of the filter lens (700) away from the exit end; a fifth lens (500) located between the fourth lens (400) and the filter lens (700), wherein, the third lens (300) is a convex-convex lens, the fourth lens (400) is a concave-concave lens, and the side surface of the third lens (300) close to the fourth lens (400) is embedded into the side surface of the fourth lens (400) close to the third lens (300).

2. The all-weather imaging lens device according to claim 1, wherein The first lens (100) is a concave-concave lens, including a first concave portion (101) and a second concave portion (102) distributed in the direction from the incident end to the exit end.

3. The all-weather imaging lens device according to claim 2, characterized in that, The second lens (200) is a concave-convex lens, including a third concave portion (201) and a first convex portion (202) distributed in the direction from the incident end to the exit end.

4. An all-weather imaging lens device according to claim 3, characterized in that, It further includes a first bracket (800), and the first bracket (800) is provided on the mounting sleeve (000) and located between the second lens (200) and the third lens (300), and the first convex portion (202) on the side surface of the second lens (200) close to the third lens (300) is embedded into the first bracket (800).

5. The all-weather imaging lens device according to claim 1, wherein The third lens (300) includes a second convex portion (301) and a third convex portion (302) distributed in the direction from the incident end to the exit end; the third convex portion (302) is embedded into the side surface of the fourth lens (400).

6. The all-weather imaging lens device according to claim 1, characterized in that, The fourth lens (400) includes a fourth concave portion (401) and a fifth concave portion (402) distributed in the direction from the incident end to the exit end; the side surface of the third lens (300) close to the fourth lens (400) is embedded into the fourth concave portion (401).

7. The all-weather imaging lens device according to claim 6, characterized in that, The fifth lens (500) is a convex-convex lens, including a fourth convex portion (501) and a fifth convex portion (502) distributed in the direction from the incident end to the exit end; a part of the fourth convex portion (501) on the side surface of the fifth lens (500) close to the fourth lens (400) is embedded into the fifth concave portion (402) on the fourth lens (400) close to the fifth lens (500).

8. The all-weather imaging lens device according to claim 7, characterized in that, It further includes a second bracket (900), and the second bracket (900) is provided on the mounting sleeve (000) and located between the fourth lens (400) and the fifth lens (500); a part of the fourth convex portion (501) on the side surface of the fifth lens (500) close to the fourth lens (400) is embedded into the second bracket (900).

9. An all-weather imaging lens device according to any one of claims 1-8, characterized in that, The first lens (100), the second lens (200), the third lens (300), the fourth lens (400), and the fifth lens (500) are all plastic lenses.

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