Lens with lens plated with IR infrared cut-off film layer

Abstract

The utility model discloses a lens with a lens plated with an IR infrared cut-off film layer, which comprises a shell, a first lens is fixedly connected in the shell, an infrared cut-off film is arranged on the outer wall of one side of the first lens, a second lens is arranged on one side of the first lens, and a third lens is arranged on one side of the second lens. A fourth lens is arranged on the other side of the first lens, a fifth lens is arranged on one side of the fourth lens, and a sixth lens is arranged on one side of the fifth lens; anti-reflection films are arranged on the outer walls of the two sides of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens, and infrared cut-off films are arranged on the anti-reflection films; according to the utility model, the infrared cut-off film is plated on the lens to replace an optical filter in an existing lens, so that the structure of the lens is simplified, the size of the lens is reduced, the production procedures of the lens are reduced, the production time is shortened, and the manufacturing cost of the lens is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lenses, and particularly relates to a lens with an IR infrared cut-off film layer coated on the lens. Background Technique

[0002] The main function of the filter is to filter out ultraviolet light and infrared light that cannot be observed by the human eye. This process reflects the unnecessary light, removes stray light to prevent color cast, and reduces stray light. The structure of the existing vehicle-mounted optical lens generally adopts a separate design of the lens and the infrared cut-off IR (filter), and places the IR at the bottom or the front end of the lens mechanism. This design will add a component to the lens, increase the volume of the lens, and also lead to an increase in multiple processes and production time during the production process of the lens, thus increasing the manufacturing cost. Content of the Utility Model

[0003] The purpose of the utility model is to provide a lens with an IR infrared cut-off film layer coated on the lens to solve the problems raised in the above background technique.

[0004] To solve the above technical problems, the utility model provides the following technical solution: A lens with an IR infrared cut-off film layer coated on the lens, including a housing, a first lens fixedly connected inside the housing, a second lens arranged on one side of the first lens, a third lens arranged on one side of the second lens, a fourth lens arranged on the other side of the first lens, a fifth lens arranged on one side of the fourth lens, a sixth lens arranged on one side of the fifth lens, and antireflection films are arranged on the outer walls on both sides of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens. Among them, an infrared cut-off film (10) is provided on any one or more light-effective transmission surfaces of any one or more of the first lens (2), the second lens (3), the third lens (4), the fourth lens (5), the fifth lens (6) and the sixth lens (7), and the antireflection film (9) is no longer provided on the lens surface provided with the infrared cut-off film (10).

[0005] As a preferred technical solution, an infrared cut-off film is provided on one light-effective transmission surface of the first lens.

[0006] As a preferred technical solution, the surface of the first lens provided with the infrared cut-off film is one of a plane or a curved surface;

[0007] As a preferred technical solution, the wavelength range of light transmission of the antireflection film is 420 - 680 nm, and the wavelength range of the infrared cut-off film (10) is 400 nm - 1100 nm.

[0008] As a preferred technical solution, the wavelength coating specification of the infrared cut-off film is: the maximum light transmittance T max< 5%, the transmission wavelength range is 350 - 380 nm; the transmittance T = 50%, the transmission wavelength range is 400 + 10 nm; the average transmittance T ave > 95% and the minimum transmittance T min > 92%, the transmission wavelength range is 420 - 630 nm; the transmittance T = 50%, the transmission wavelength range is 650 + 10 nm; the average transmittance T ave < 3%, the transmission wavelength range is 720 - 1050 nm; the transmittance T < 5%, the transmission wavelength range is 1050 - 1100 nm.

[0009] As a preferred technical solution, the second lens, the fourth lens, the fifth lens and the sixth lens are all fixedly connected inside the housing.

[0010] As a preferred technical solution, a housing is sleeved on the third lens, and the housing is threadedly connected to the housing.

[0011] An IR infrared cut-off film layer lens provided by the present utility model has the advantages that: by plating an infrared cut-off film on the lens to replace the filter in the existing lens, the structure of the lens is simplified, the volume of the lens is reduced, and it is beneficial to reduce the production process of the lens and shorten the production time, thereby effectively reducing the manufacturing cost of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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 drawings in the following description are 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.

[0013] Figure 1 It is a schematic diagram of the overall front view sectional structure of the present utility model;

[0014] Figure 2 is Figure 1 the enlarged view of the structure of area A in

[0015] In the figure: 1 - housing; 2 - first lens; 3 - second lens; 4 - third lens; 5 - fourth lens; 6 - fifth lens; 7 - sixth lens; 8 - housing; 9 - antireflection film; 10 - infrared cut-off film. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0017] Please refer to the attached Figure 1 - attached Figure 2 , an embodiment provided by the present utility model: A lens coated with an IR infrared cut-off film layer lens, including a housing 1, a first lens 2 is fixedly connected inside the housing 1, an infrared cut-off film 10 is provided on the outer wall of one side of the first lens 2, a second lens 3 is provided on one side of the first lens 2, a third lens 4 is provided on one side of the second lens 3, a fourth lens 5 is provided on the other side of the first lens 2, a fifth lens 6 is provided on one side of the fourth lens 5, a sixth lens 7 is provided on one side of the fifth lens 6, the infrared cut-off film 10 is used to filter infrared light, and the first lens 2, the second lens 3, the third lens 4, the fourth lens 5, the fifth lens 6, and the sixth lens 7 are used to refract light to construct the required optical path; antireflection films 9 are provided on the outer walls on both sides of the first lens 2, the second lens 3, the third lens 4, the fourth lens 5, the fifth lens 6, and the sixth lens 7, and the infrared cut-off film 10 is provided on the antireflection film 9, and the antireflection film 9 is used to reduce reflected light; the surface of the first lens 2 where the infrared cut-off film 10 is provided is one of a plane or a curved surface, and the radian of the curved surface is greater than 9.0. The larger the radian, the flatter it is and the simpler the process requirements are; the wavelength range of light transmission of the antireflection film 9 is 420 - 680 nm; the wavelength range of the infrared cut-off film (10) is 400 nm - 1100 nm. The wavelength coating specification of the infrared cut-off film 10 is: the maximum light transmittance T max < 5%, the light transmission wavelength range is 350 - 380 nm; the light transmittance T = 50%, the light transmission wavelength range is 400 + 10 nm; the average light transmittance T ave > 95% and the minimum light transmittance T min > 92%, the light transmission wavelength range is 420 - 630 nm; the light transmittance T = 50%, the light transmission wavelength range is 650 + 10 nm; the average light transmittance T ave < 3%, the light transmission wavelength range is 720 - 1050 nm; the light transmittance T < 5%, the light transmission wavelength range is 1050 - 1100 nm; the second lens 3, the fourth lens 5, the fifth lens 6, and the sixth lens 7 are all fixedly connected inside the housing 1; a housing 8 is sleeved on the third lens 4, and the housing 8 is threadedly connected to the housing 1. The housing 8 is used to install the third lens 4, and the housing 1 and the housing 8 form the housing part of the lens.

[0018] Working principle: In the present utility model, the first lens 2, the second lens 3, the third lens 4, the fourth lens 5, the fifth lens 6, and the sixth lens 7 are used to refract light rays to construct the required optical path. The infrared cut-off film 10 is used to filter out infrared light, and the anti-reflection film 9 is used to reduce reflected light. The housing 1 and the casing 8 form the housing part of the lens.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, 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 components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0020] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A lens having an IR cut-off film layer coated on the lens, comprising a housing (1), characterized in that: A first lens (2) is fixedly connected inside the housing (1), a second lens (3) is arranged on one side of the first lens (2), a third lens (4) is arranged on one side of the second lens (3), a fourth lens (5) is arranged on the other side of the first lens (2), a fifth lens (6) is arranged on one side of the fourth lens (5), and a sixth lens (7) is arranged on one side of the fifth lens (6), and anti-reflection films (9) are arranged on the outer walls of both sides of the first lens (2), the second lens (3), the third lens (4), the fourth lens (5), the fifth lens (6) and the sixth lens (7), wherein an infrared cut-off film (10) is arranged on any one or more effective light transmission surfaces of any one or more lenses of the first lens (2), the second lens (3), the third lens (4), the fourth lens (5), the fifth lens (6) and the sixth lens (7), and the anti-reflection film (9) is no longer arranged on the lens surface provided with the infrared cut-off film (10).

2. The lens coated with an IR cut-off film according to claim 1, characterized in that: An infrared cut-off film (10) is provided on an effective light transmission surface of the first lens (2).

3. The lens coated with an IR cut-off film according to claim 1, characterized in that: The surface of the first lens (2) on which the infrared cut-off film (10) is arranged is a plane or a curved surface, and the curvature of the curved surface is greater than 9.

0.

4. The lens coated with an IR cut-off film according to claim 1, characterized in that: The transmission wavelength range of the antireflection film (9) is 420-680 nm, and the wavelength range of the infrared cutoff film (10) is 400 nm-1100 nm.

5. The lens coated with an IR cut-off film according to claim 1, characterized in that: The wavelength coating specification of the infrared cut-off film (10) is: maximum light transmittance T max <5%, the transmission wavelength range is 350-380nm; transmittance T = 50%, the transmission wavelength range is 400 + 10nm; average transmittance T ave >95% and minimum transmittance T min >92%, the transmission wavelength range is 420-630nm; transmittance T=50%, the transmission wavelength range is 650+10nm; average transmittance T ave <3%, the transmission wavelength range is 720-1050nm; transmittance T<5%, the transmission wavelength range is 1050-1100nm.

6. The lens coated with an IR cut-off film according to claim 1, characterized in that: The second lens (3), the fourth lens (5), the fifth lens (6) and the sixth lens (7) are all fixed in the housing (1).

7. The lens coated with an IR cut-off film according to claim 1, characterized in that: The third lens (4) is sleeved with a shell (8), and the shell (8) is threadedly connected to the outer shell (1).

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