Optical imaging system, assembly method thereof, and optical design compensation method

Abstract

The present invention provides an optical imaging system, comprising: a lens barrel; a first optical assembly, mounted within the lens barrel, for optical imaging; a second optical assembly, mounted within the lens barrel and disposed on the image side of the first optical assembly, for optical imaging; and a waterproof stabilization assembly, comprising: a waterproof structure E1, disposed on the object side, image side, and / or surrounding the first optical assembly, for sealing and waterproofing the optical imaging system; and a temperature drift compensation structure, disposed on the object side and / or image side of the first optical assembly, for maintaining the lens barrel, the first optical assembly, and the second optical assembly in a compressed state when the ambient temperature changes. The waterproof stabilization assembly of the present invention, in conjunction with the optical compensation structure, can effectively address the problem of loosening or displacement of components in the optical imaging system caused by thermal expansion differences under high temperature conditions, thereby improving imaging quality.

Description

Technical Field

[0001] The present disclosure relates to the field of lens technology, and in particular to an optical imaging system, an assembly method of an optical imaging system, and an optical design compensation method. Background Art

[0002] In hot weather or when the environment switches between overheating and overcooling, such as in areas near the equator, the optical imaging system of electronic camera equipment (such as vehicle-mounted, surveillance, etc.) will be affected by thermal expansion, which will affect the internal optical lenses, spacers and other components. Due to the difference in expansion of different materials, gaps of random position and size will be generated between the optical lenses, spacers and other components inside the lens. Due to the randomness of the gaps and factors such as vibration and collision in the external environment, the internal optical lenses, spacers and other components will become loose or irreversibly displaced, which will lead to the failure of the optical compensation solution. At the same time, due to the generation of gaps, the lens will lose its sealing, causing water to enter the lens on rainy days or when water droplets splash, resulting in a decrease in the image quality of the lens or even loss of function of the optical imaging system, causing damage to personal safety or property.

[0003] Currently, existing optical imaging systems only offer simple optical compensation for temperature drift, while the mechanical structure lacks the ability to stabilize this compensation. This can lead to the aforementioned issues, resulting in the optical compensation for temperature drift not matching actual conditions or even leading to the failure of the optical compensation, resulting in serious consequences. Therefore, there is an urgent need to develop an optical imaging system with a mechanical structure that stabilizes temperature drift to address these issues.

[0004] The contents of the background technology section merely disclose the technologies known to the inventors and do not necessarily represent the existing technologies in this field. Summary of the Invention

[0005] Under high temperature conditions, the lens of an optical imaging system forms gaps of random positions and sizes due to the thermal expansion difference between the lens barrel and internal components (optical lens, spacer, etc.), causing the internal components of the lens to loosen or irreversibly shift, thereby leading to the failure of the optical compensation scheme and the loss of lens sealing performance, resulting in a decrease in the imaging quality of the lens, seriously affecting the operation of the optical imaging system. In view of this, the present invention relates to an optical imaging system, comprising: a lens barrel; a first optical assembly installed in the lens barrel for optical imaging; a second optical assembly installed in the lens barrel and arranged on the image side of the first optical assembly for optical imaging; and a waterproof stabilization assembly, comprising: a waterproof structure arranged on the object side, image side and / or surrounding of the first optical assembly for sealing and waterproofing the optical imaging system; and a temperature drift compensation structure arranged on the object side and / or image side of the first optical assembly for keeping the lens barrel, the first optical assembly and the second optical assembly in a compressed state at all times when the ambient temperature changes.

[0006] According to a preferred embodiment of the present invention, the lens barrel includes a front ring, which is sleeved on the first optical component and is used to compress the lens barrel, the first optical component and the second optical component. The waterproof structure can be arranged between the first optical component and the inner wall of the lens barrel and / or between the first optical component and the front ring.

[0007] According to a preferred embodiment of the present invention, the second optical component includes at least one spacer, which is arranged on the image side of the first optical component and is used for supporting between the first optical component and the second optical component and / or between the second optical components, and the temperature drift compensation structure is arranged in one or more of the following positions: between the first optical component and the second optical component; between the first optical component and the spacer; and between the first optical component and the front ring.

[0008] According to a preferred embodiment of the present invention, the temperature drift compensation structure is provided on the image side of the second optical component and between the second optical component and the inner wall of the lens barrel.

[0009] According to a preferred embodiment of the present invention, the waterproof stabilizing component is integrally formed.

[0010] According to a preferred embodiment of the present invention, the temperature drift compensation structure is compressed along the optical axis at room temperature and assembled in the optical imaging system, and the compression amount ΔDw of the temperature drift compensation structure along the optical axis satisfies the conditional formula:

[0011] (ΔH b-max -ΔH n-max )<ΔDw<5(ΔH b-max -ΔHn-max );

[0012] Where ΔH b-max It represents the absolute value of the maximum expansion of the lens barrel along the optical axis when the temperature changes, ΔH n-max It represents the absolute value of the maximum expansion of the first optical component and the second optical component along the optical axis when the temperature changes.

[0013] According to a preferred embodiment of the present invention, the waterproof structure and the temperature drift compensation structure are compressed along the optical axis at room temperature and assembled in the optical imaging system, and the compression amount ΔDf of the waterproof structure along the optical axis and the compression amount ΔDw of the temperature drift compensation structure along the optical axis satisfy the conditional formula:

[0014] 2ΔDf<ΔDw<5ΔDf.

[0015] According to a preferred embodiment of the present invention, the temperature drift compensation structure is compressed along the optical axis at room temperature and assembled in the optical imaging system, and the compression amount ΔDw of the temperature drift compensation structure along the optical axis satisfies the conditional formula:

[0016] 0.1Dw<ΔDw<0.9Dw;

[0017] Wherein, Dw represents the length of the temperature drift compensation structure along the optical axis at room temperature and without force.

[0018] According to a preferred embodiment of the present invention, the waterproof structure is compressed along the optical axis at room temperature and assembled in the optical imaging system, and the compression amount ΔDf of the waterproof structure along the optical axis satisfies the conditional formula:

[0019] 0.1Df<ΔDf<0.9Df;

[0020] Wherein, Df represents the length of the waterproof structure along the optical axis at room temperature and without force.

[0021] According to a preferred embodiment of the present invention, the expansion amount ΔH of the lens barrel along the optical axis at different temperatures is b Satisfy the conditions:

[0022] ΔH b =α b (T-T0)H0;

[0023] Wherein, T0 represents the design temperature of the optical imaging system, T represents the temperature of the environment where the optical imaging system is located, and α b represents the linear expansion coefficient of the lens barrel material, and H0 represents the length of the lens barrel along the optical axis at the design temperature.

[0024] According to a preferred embodiment of the present invention, the first optical component includes n lenses, n ≥ 1, the second optical component includes m lenses, m ≥ 1, the second optical component includes x spacers, x ≥ 0, and the expansion amount ΔH of the first optical component and the second optical component along the optical axis at different temperatures is nm Satisfy the conditions:

[0025] ΔH nm =(T-T0)(α n1 L n1 +…+α nn L nn +α m1 L m1 +…+α mm L mm )+(T-T0)(α x1 L x1 +…+α xx L xx );

[0026] Wherein, T0 represents the design temperature of the optical imaging system, T represents the temperature of the environment where the optical imaging system is located, and α n1 ,…,α nn , α m1 ,…,α mm They represent the linear expansion coefficients of the lenses arranged sequentially from the object side to the image side, L n1 ,…,L nn , L m1 ,…,L mm They represent the edge thickness of each lens arranged from the object side to the image side along the optical axis at the design temperature, α x1 ,…,α xx They represent the linear expansion coefficients of the spacers arranged sequentially from the object side to the image side, L x1 ,…,L xx They respectively represent the length of each spacer arranged sequentially from the object side to the image side along the optical axis at the design temperature.

[0027] According to a preferred embodiment of the present invention, at the same temperature, the expansion amount ΔH of the lens barrel along the optical axis is b and the expansion amount ΔH of the first optical component and the second optical component along the optical axis direction nm Satisfy the conditions:

[0028] ΔH b -ΔH nm >0.

[0029] According to a preferred embodiment of the present invention, the waterproof structure and the temperature drift compensation structure are both annular structures, and the annular structure includes one or more of the following cross sections: circular, elliptical, rectangular, and trapezoidal.

[0030] According to a preferred embodiment of the present invention, part or all of the optical imaging system is made of heat-conducting material.

[0031] According to a preferred embodiment of the present invention, one or more of the lens barrel, the front ring, the first optical assembly and the second optical assembly is provided with a groove for installing and positioning the waterproof structure and / or the temperature drift compensation structure.

[0032] According to a preferred embodiment of the present invention, the present invention further comprises:

[0033] The image sensor is arranged on the image side of the second optical component and is used to acquire a digital image.

[0034] The present invention also relates to an assembly method of an optical imaging system, comprising: at room temperature, compressing a temperature drift compensation structure along an optical axis according to preset conditions and assembling the structure into the optical imaging system as described above.

[0035] According to a preferred embodiment of the present invention, the method includes: at room temperature, compressing the waterproof structure along the optical axis according to preset conditions and assembling the waterproof structure into the optical imaging system as described above.

[0036] The present invention also relates to an optical design compensation method, which performs optical design compensation on the imaging position of the optical imaging system based on the installation position of the temperature drift compensation structure in the above-mentioned optical imaging system, the compression amount along the optical axis at room temperature, and the current ambient temperature.

[0037] The optical imaging system provided by the present invention compensates for temperature drift in its mechanical structure. The waterproof stabilization component is in a deeply compressed state at room temperature. When the temperature rises, a certain gap appears between the lens barrel (front ring) and the internal components due to the expansion difference. The waterproof stabilization component will rebound in the gap, which can ensure that the internal components (optical lens, spacer, etc.) of the optical imaging system are always in a compressed state when the temperature changes. That is, the gap between the lens barrel (front ring) and the internal components (optical lens, spacer, etc.) is stable in size and fixed in position, thereby ensuring that the internal structure of the optical imaging system will not undergo serious or irreversible displacement at high temperatures or after returning to room temperature after experiencing high temperatures. The combination of the temperature drift compensation structure described in the present invention and the optical design compensation can effectively ensure the temperature drift stability and waterproof effect of the optical imaging system, thereby ensuring the imaging quality of the optical imaging system. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings, which constitute part of this disclosure, are used to provide a further understanding of the disclosure. The exemplary embodiments of the disclosure and their descriptions are used to explain the disclosure and do not constitute an improper limitation of the disclosure. In the accompanying drawings:

[0039] Figure 1 A schematic diagram showing the internal structure of a general lens without a waterproof stabilization component at room temperature is shown;

[0040] Figure 2 A schematic diagram showing the internal structure of a general lens without a waterproof stabilization component at high temperature is shown;

[0041] Figure 3 Schematic cross-sectional views of waterproof and stable assemblies according to various embodiments of the present invention are shown (corresponding to the waterproof and stable assemblies according to the first to ninth embodiments, respectively);

[0042] Figure 4 FIG2 is a schematic diagram showing an optical imaging system 100 according to a first embodiment of the present invention;

[0043] Figure 5 A schematic diagram showing the change in compression of the waterproof stabilizing assembly in the first embodiment of the present invention at room temperature and high temperature;

[0044] Figure 6 FIG2 is a schematic diagram showing an optical imaging system 200 according to a second embodiment of the present invention;

[0045] Figure 7 A schematic diagram showing the change in compression of the waterproof stabilizing assembly in the second embodiment of the present invention at room temperature and high temperature;

[0046] Figure 8 FIG2 is a schematic diagram showing an optical imaging system 300 according to a third embodiment of the present invention;

[0047] Figure 9 A schematic diagram showing the change in compression of the waterproof stabilizing assembly at room temperature and high temperature in the third embodiment of the present invention;

[0048] Figure 10 FIG4 shows an assembly diagram of an optical imaging system 400 according to a fourth embodiment of the present invention;

[0049] Figure 11 A schematic diagram showing changes in compression of the waterproof stabilizing assembly at room temperature and high temperature in the fourth embodiment of the present invention;

[0050] Figure 12 FIG2 is a schematic diagram showing an optical imaging system 500 according to a fifth embodiment of the present invention;

[0051] Figure 13 A schematic diagram showing the change in compression of the waterproof stabilizing assembly in the fifth embodiment of the present invention at room temperature and high temperature;

[0052] Figure 14 FIG. 5 is a schematic diagram showing an optical imaging system 600 according to a sixth embodiment of the present invention;

[0053] Figure 15 A schematic diagram showing the change in compression of the waterproof stabilizing assembly at room temperature and high temperature in the sixth embodiment of the present invention;

[0054] Figure 16 FIG2 is a schematic diagram showing an optical imaging system 700 according to a seventh embodiment of the present invention;

[0055] Figure 17 A schematic diagram showing the change in compression of the waterproof stabilizing assembly at room temperature and high temperature in the seventh embodiment of the present invention;

[0056] Figure 18 FIG2 is a schematic diagram showing an optical imaging system 800 according to an eighth embodiment of the present invention;

[0057] Figure 19 A schematic diagram showing changes in compression of the waterproof stabilizing assembly at room temperature and high temperature in the eighth embodiment of the present invention;

[0058] Figure 20 FIG2 is a schematic diagram showing an optical imaging system 900 according to a ninth embodiment of the present invention;

[0059] Figure 21 A schematic diagram showing the change in compression of the waterproof stabilizing assembly in the ninth embodiment of the present invention at room temperature and high temperature;

[0060] Figure 22 FIG2 is a schematic diagram showing an optical imaging system 1000 according to a tenth embodiment of the present invention;

[0061] Figure 23 FIG2 is a schematic diagram showing an optical imaging system 1100 according to an eleventh embodiment of the present invention;

[0062] Figure 24 FIG2 is a schematic diagram showing an optical imaging system 1200 according to a twelfth embodiment of the present invention;

[0063] Description of reference numerals:

[0064] A: lens barrel; B1: first optical component; B11: first lens;

[0065] B2: second optical assembly; B21: second lens; B2m: m-th lens (m is a positive integer, representing the number of lenses in the second optical assembly B2 and the serial number of the last lens);

[0066] Cx: spacer (x is a positive integer, indicating the sequence of the spacers from the object side to the image side);

[0067] C1: First spacer; D: Front ring; E: Waterproof stabilization component; E1: Waterproof structure; E2: Temperature drift compensation structure; F: Filter. DETAILED DESCRIPTION

[0068] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0069] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for the purpose of facilitating the description of the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of the aforementioned features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0070] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical, electrical, or intercommunication connections; direct or indirect connections through an intermediary; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0071] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0072] Currently, most lens temperature drift compensation technologies on the market utilize optical compensation within the lens assembly itself. This relies on the temperature-dependent refractive index (dn / dt) of the lens. This changes the refractive index at high and low temperatures, thereby altering the effective focal length of the entire lens to compensate for temperature drift caused by components such as the lens barrel and spacers. However, due to the varying coefficients of thermal expansion of different materials (glass, metal, etc.), the lens barrel and internal components expand differently at high temperatures, resulting in gaps between lens components at high temperatures.

[0073] Figure 1 The diagram shows the internal structure of a general lens without waterproof stabilization components at room temperature. At room temperature of 25°, the front ring, lens barrel, optical lenses, and spacers are in a compressed state, and there is no air gap between the optical lenses and the spacers.

[0074] Figure 2 The figure shows the internal structure of a general lens without waterproof stabilization components at high temperature. At a high temperature of 125°, due to the difference in thermal expansion of various components, an air gap is generated between the optical lens and the spacer, as shown in the figure. Figure 2 As shown in the black block in the middle, the positions and sizes of these gaps are randomly distributed, causing the components to loosen or produce irreversible positions, resulting in the failure of the optical compensation solution and the loss of sealing performance, resulting in a decrease in imaging quality.

[0075] Specifically, at high temperatures, the expansion of the lens barrel is greater than the combined expansion of the internal components (such as optical lenses and spacers), resulting in axial clearance between the components. The location and size of this clearance are random and uncontrollable. Furthermore, when the lens is operating at high temperatures, vibrations from the camera (such as from a moving car, strong winds impacting the surveillance camera, collisions during extreme sports, etc.) can cause irreversible displacement of the lens' internal components, resulting in a decrease in image quality when the lens is at high temperatures or after returning to normal temperature after experiencing high temperatures, seriously affecting the operation of the camera module. Therefore, purely optical compensation alone cannot solve the above problems.

[0076] The gap referred to in the present invention refers to the air gap generated by the thermal expansion difference at the contact part of the internal components of the optical imaging system, and does not include the air gap between internal components, such as the gap between optical lenses. Figure 2 The black block position is shown.

[0077] Figure 4 A schematic diagram of an optical imaging system 100 according to one embodiment of the present invention is shown, with the left side representing the object side and the right side representing the image side. Optical imaging system 100 includes a lens barrel A, a first optical assembly B1, a second optical assembly B2, and a waterproof stabilization assembly E. The first optical assembly B1 is mounted within lens barrel A for optical imaging; the second optical assembly B2 is mounted within lens barrel A on the image side of the first optical assembly B1 for optical imaging; the waterproof stabilization assembly E includes a waterproof structure E1 and a thermal drift compensation structure E2. The waterproof structure E1 is mounted on the object side, image side, and / or surrounding area (the periphery or sidewall of the optical lens) of the first optical assembly B1 to seal and waterproof the optical imaging system; the thermal drift compensation structure E2 is mounted on the object side and / or image side of the first optical assembly B1 to maintain a tight connection between the lens barrel A, the first optical assembly B1, and the second optical assembly B2 during temperature fluctuations. The waterproof stabilization assembly of the present invention, combined with the optical compensation structure, can effectively address the problem of loosening or displacement of components in optical imaging systems caused by thermal expansion differences at high temperatures, thereby improving imaging quality.

[0078] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0079] The first optical assembly B1 includes at least one optical lens. For example, the first optical assembly B1 includes two optical lenses of any surface shape that form a cemented lens. The present invention does not limit parameters such as the type, optical power, and number of lenses in the first optical assembly B1. The second optical assembly B2 is disposed on the image side of the first optical assembly B1 and includes at least one optical lens. For example, the second optical assembly B2 includes six optical lenses, two of which form a cemented lens. The present invention does not limit parameters such as the type, optical power, and number of lenses in the second optical assembly B2.

[0080] The waterproof stabilization assembly E includes a waterproof structure E1 and a temperature drift compensation structure E2. The waterproof structure E1 can be located on either the object side or the image side of the first optical assembly B1. If the waterproof stabilization assembly E includes two waterproof structures E1, one can be located on the object side and the other on the image side of the first optical assembly B1. The present invention does not limit the number of waterproof structures E1; any structure that can provide a waterproof seal for the optical imaging system falls within the scope of protection of the present invention.

[0081] The thermal drift compensation structure E2 can be located on the object side of the first optical assembly B1 or on the image side of the first optical assembly B1. If the waterproof stabilization assembly E includes two thermal drift compensation structures E2, one can be located on the object side of the first optical assembly B1 and the other on the image side of the first optical assembly B1. "Deployed on the image side of the first optical assembly B1" includes being located immediately adjacent to the first optical assembly B1 or further away from the first optical assembly B1, such as on the image side of the second optical assembly B2. The present invention does not limit the number of thermal drift compensation structures E2; as long as they can maintain the lens barrel A, the first optical assembly B1, and the second optical assembly B2 in a consistently compressed state despite changes in ambient temperature, they are within the scope of protection of the present invention.

[0082] According to a preferred embodiment of the present invention, the lens barrel A includes a front ring D, which is mounted on the first optical component B1 and is used to compress the lens barrel A, the first optical component B1 and the second optical component B2. The waterproof stabilization component E can be arranged between the first optical component B1 and the inner wall of the lens barrel A and / or between the first optical component B1 and the front ring D.

[0083] According to a preferred embodiment of the present invention, the second optical assembly B2 includes at least one spacer ring Cx, where x is a positive integer representing the order of the spacers from the object side to the image side. For example, the second optical assembly B2 includes C1, C2, ..., Cx. At least one spacer ring Cn is disposed on the image side of the first optical assembly B1 to provide support between the first optical assembly B1 and the second optical assembly B2 and / or between the optical lenses of the second optical assembly B2. The temperature drift compensation structure E2 is disposed at one or more of the following locations:

[0084] between the first optical component B1 and the second optical component B2;

[0085] between the first optical component B1 and the spacer Cn; and

[0086] Between the first optical component B1 and the front ring D.

[0087] According to a preferred embodiment of the present invention, the waterproof stabilization assembly E is integrally formed. Specifically, when the distance between the waterproof structure E1 and the thermal drift compensation structure E2 is small, an integral molding process can be employed. For example, the waterproof structure E1 is positioned between the first optical assembly B1 and the inner wall of the lens barrel A, while the thermal drift compensation structure E2 is positioned between the first optical assembly B1 and the second optical assembly B2. Another example is when the waterproof structure E1 is positioned between the first optical assembly B1 and the front ring D, while the thermal drift compensation structure E2 is positioned between the first optical assembly B1 and the first spacer C1. In both cases, the distance between the waterproof stabilization assembly E and the thermal drift compensation structure E2 is small, making an integral molding process preferred.

[0088] According to a preferred embodiment of the present invention, the thermal drift compensation structure E2 is disposed on the image side of the second optical assembly B2 and between the second optical assembly B2 and the inner wall of the lens barrel A. Specifically, when the distance between the waterproof structure E1 and the thermal drift compensation structure E2 is large, an independent processing method can be adopted. For example, if the waterproof structure E1 is disposed between the first optical assembly B1 and the front ring D, and the thermal drift compensation structure E2 is disposed between the second optical assembly B2 and the inner wall of the lens barrel A, and the distance between the waterproof structure E1 and the thermal drift compensation structure E2 is large, an independent processing method is preferred. This will be further described below through specific embodiments.

[0089] According to a preferred embodiment of the present invention, both the waterproof structure E1 and the thermal drift compensation structure E2 are annular structures, and the annular structures may have one or more of the following cross-sections: circular, elliptical, rectangular, or trapezoidal. The waterproof structure E1 and the thermal drift compensation structure E2 may be designed as annular structures with various cross-sections. Those skilled in the art will appreciate that the annular structures may also have cross-sectional shapes such as a rectangular arc surface or a wavy surface, all of which fall within the scope of the present invention.

[0090] According to a preferred embodiment of the present invention, part or all of the optical imaging system is made of heat-conducting materials. For example, part or all of the front ring D, lens barrel A, spacer ring Cx, and optical lens are made of heat-conducting materials.

[0091] According to a preferred embodiment of the present invention, the waterproof stabilizing component E is made of a heat-conducting material.

[0092] According to a preferred embodiment of the present invention, the waterproof stabilizing component E is made of a material with relatively large elastic deformation, such as a rubber material or a plastic material.

[0093] Figure 3 Schematic cross-sectional views of waterproof stabilization components E according to various embodiments of the present invention are shown. Figure 3 Figures (1) to (9) correspond to the waterproof stabilization component structures in the first to ninth embodiments below, respectively. The nine waterproof stabilization components are all integrally formed structures.

[0094] According to a preferred embodiment of the present invention, the temperature drift compensation structure E2 is compressed along the optical axis at room temperature and assembled in the optical imaging system. The compression amount ΔDw of the temperature drift compensation structure E2 along the optical axis satisfies the conditional formula:

[0095] (ΔH b-max -ΔH n-max )<ΔDw<5(ΔH b-max -ΔH n-max ); (a)

[0096] Where ΔH b-maxΔH represents the absolute value of the maximum expansion of the lens barrel A along the optical axis when the temperature changes. n-max It represents the absolute value of the maximum expansion of the first optical component B1 and the second optical component B2 along the optical axis when the temperature changes.

[0097] After being assembled into the optical imaging system, the drift compensation structure E2 is in a deeply compressed state. When the temperature fluctuates, a gap forms between the lens barrel A and the internal components (optical lenses, spacers, etc.) due to differential expansion. At this point, the drift compensation structure E2, due to compression and rebound, generates sufficient axial elastic force to squeeze the internal components (optical lenses, spacers, etc.), compensating for the expansion gap between the lens barrel A (front ring D) and the internal components in the axial direction. This ensures that the internal components of the optical imaging system remain compressed during temperature fluctuations, preventing severe or irreversible displacement. To ensure that the drift compensation structure E2 effectively compensates for this gap during temperature fluctuations, its compression along the optical axis preferably satisfies condition (a).

[0098] Satisfying the above-mentioned conditional equation (a) allows the drift compensation structure E2 to have a reasonable amount of compression and rebound space when the temperature changes, effectively ensuring that the drift compensation structure E2 stabilizes the internal structure of the imaging lens during temperature changes. If the amount of compression of the drift compensation structure E2 along the optical axis exceeds the lower limit of the above-mentioned conditional equation (a), the amount of compression of the drift compensation structure E2 along the optical axis may be less than the expansion difference between the lens barrel (front ring D) and the internal structure, which may result in gaps within the optical imaging system during temperature changes, affecting the imaging quality of the optical imaging system. If the amount of compression of the drift compensation structure E2 along the optical axis exceeds the upper limit of the above-mentioned conditional equation (a), the elastic force of the drift compensation structure E2 may be too large, easily causing deformation of other components. Conditional equation (a) is a preferred embodiment of the present invention.

[0099] According to a preferred embodiment of the present invention, the waterproof structure E1 and the temperature drift compensation structure E2 are compressed along the optical axis at room temperature and assembled in the optical imaging system. The compression amount ΔDf of the waterproof structure E1 along the optical axis and the compression amount ΔDw of the temperature drift compensation structure E2 along the optical axis preferably satisfy the conditional formula:

[0100] 2ΔDf<ΔDw<5ΔDf. (b)

[0101] Satisfying the above conditional expression (b) ensures that both the drift compensation structure E2 and the waterproof structure E1 function properly, preventing interference between the two structures, which could lead to failure of either. Exceeding the upper limit of the above conditional expression (b) may result in excessive compression of the drift compensation structure E2, making it susceptible to aging and failure. Furthermore, insufficient compression of the waterproof structure E1 during temperature fluctuations could result in loss of waterproofing functionality. Exceeding the lower limit of the above conditional expression (b) may lead to interference between the drift compensation structure E2 and the waterproof structure E1 in certain structures, potentially leading to failure of either structure, thus impacting the optical performance of the optical imaging system.

[0102] According to a preferred embodiment of the present invention, the temperature drift compensation structure E2 is compressed along the optical axis at room temperature and assembled in the optical imaging system. The compression amount ΔDw of the temperature drift compensation structure E2 along the optical axis satisfies the conditional formula:

[0103] 0.1Dw<ΔDw<0.9Dw; (c)

[0104] Wherein, Dw represents the length of the temperature drift compensation structure E2 along the optical axis at room temperature and without force.

[0105] Satisfying the above conditional expression (c) ensures that the thermal drift compensation structure E2 is sufficiently compressed and does not suffer from over-compression. If the lower limit of the above conditional expression (c) is exceeded, the thermal drift compensation structure E2 will not be fully compressed, which may result in insufficient elasticity and rebound to control the generation of gaps during temperature changes, affecting the stability of the optical imaging system. Since the thermal drift compensation structure E2 itself has a certain length, if the upper limit of the above conditional expression (c) is exceeded, the thermal drift compensation structure E2 will be over-compressed, which may cause aging failure of the thermal drift compensation structure E2, affecting the stability of the optical imaging system.

[0106] According to a preferred embodiment of the present invention, the waterproof structure E1 is compressed along the optical axis at room temperature and assembled in the optical imaging system. The compression amount ΔDf of the waterproof structure E1 along the optical axis satisfies the conditional formula:

[0107] 0.1Df<ΔDf<0.9Df; (d)

[0108] Wherein, Df represents the length of the waterproof structure E1 along the optical axis at room temperature and without force.

[0109] Satisfying the above conditional expression (d) ensures that the waterproof structure E1 is sufficiently compressed to maintain its waterproof performance without over-compression. If the lower limit of the above conditional expression (d) is exceeded, the waterproof structure E1 will not be fully compressed, which may cause the waterproof performance of the waterproof structure E1 to deteriorate or even fail, causing water to enter the lens and affect the imaging performance of the optical imaging system. If the upper limit of the above conditional expression (d) is exceeded, the waterproof structure E1 will be over-compressed, which may cause aging and failure of the waterproof structure E1, affecting the waterproof performance of the optical imaging system.

[0110] According to a preferred embodiment of the present invention, the expansion amount ΔH of the lens barrel along the optical axis at different temperatures is b Satisfy the conditions:

[0111] ΔH b =α b (T-T0)H0; (e)

[0112] Where T0 represents the design temperature of the optical imaging system, T represents the temperature of the environment where the optical imaging system is located, and α b It represents the linear expansion coefficient of the lens barrel material, and H0 represents the length of the lens barrel along the optical axis at the design temperature.

[0113] According to a preferred embodiment of the present invention, the first optical component includes n lenses, n ≥ 1, the second optical component includes m lenses, m ≥ 1, the second optical component includes x spacers, x ≥ 0, and the expansion amount ΔH of the first optical component and the second optical component along the optical axis at different temperatures nm Satisfy the conditions:

[0114] ΔH nm =(T-T0)(α n1 L n1 +…+α nn L nn +α m1 L m1 +…+α mm L mm )+(T-T0)(α x1 L x1 +…+α xx L xx ); (f)

[0115] Where T0 represents the design temperature of the optical imaging system, T represents the temperature of the environment where the optical imaging system is located, and α n1 ,…,α nn , α m1 ,…,α mm They represent the linear expansion coefficients of the lenses arranged sequentially from the object side to the image side, L n1 ,…,Lnn , L m1 ,…,L mm They represent the edge thickness of each lens arranged from the object side to the image side along the optical axis at the design temperature, α x1 ,…,α xx They represent the linear expansion coefficients of the spacers arranged sequentially from the object side to the image side, L x1 ,…,L xx They respectively represent the length of each spacer arranged sequentially from the object side to the image side along the optical axis at the design temperature.

[0116] According to a preferred embodiment of the present invention, at the same temperature, the expansion amount ΔH of the lens barrel along the optical axis is b and the expansion amount ΔH of the first optical component and the second optical component along the optical axis nm Satisfy the conditions:

[0117] ΔH b -ΔH nm >0. (g)

[0118] The waterproof stabilization assembly provided by the present invention can stabilize the internal structure of the optical imaging system when the temperature changes, thereby eliminating the randomness of the gap generated by the lens barrel (front ring) and internal components (optical lens, spacer, etc.), ensuring the stability of the size of the gap (compensated by the temperature drift compensation structure) and the fixation of the position, and effectively preventing the internal components of the optical imaging system from loosening or irreversibly displacing due to external environmental vibrations, collisions, etc. or the internal expansion and contraction of the lens when in a high temperature state or after returning to normal temperature after experiencing high temperature. This effectively ensures the temperature drift stability and waterproof function of the optical imaging system, improves the environmental stability and safety of the optical imaging system, and is suitable for many fields such as vehicle-mounted lenses, outdoor monitoring, and sports cameras.

[0119] The waterproof stabilization component designed in the present invention can effectively stabilize the expansion difference of the optical imaging system at high temperature, eliminate the randomness of the gaps between the internal components of the optical imaging system, make the internal components of the optical imaging system more tightly connected, and thus ensure that vibrations under high temperature conditions will not have a serious impact on the internal components of the optical imaging system, effectively ensuring the temperature drift stability and waterproof function of the optical imaging system.

[0120] According to a preferred embodiment of the present invention, one or more of the lens barrel A, front ring D, first optical assembly B1, and second optical assembly B2 are provided with grooves for mounting and positioning the waterproof structure E1 and / or the temperature drift compensation structure E2. For example, the lens barrel A, front ring D, or the edge of the optical lens and platform may be provided with grooves for mounting and positioning the waterproof stabilization assembly.

[0121] According to a preferred embodiment of the present invention, the optical imaging system further comprises: an image sensor disposed on the image side of the second optical component, for acquiring a digital image.

[0122] The present invention also relates to a method for assembling an optical imaging system, comprising: at room temperature, compressing a thermal drift compensation structure E2 along the optical axis according to preset conditions and assembling the structure within the optical imaging system described above. The preset conditions refer to the conditions that the thermal drift compensation structure E2 must meet in order to be compressed along the optical axis.

[0123] According to a preferred embodiment of the present invention, the assembly method further includes: compressing the waterproof structure along the optical axis according to a preset condition at room temperature and assembling the waterproof structure into the optical imaging system described above. The preset condition refers to the condition that the waterproof structure must meet in terms of compression along the optical axis.

[0124] The present invention also relates to an optical design compensation method, which performs optical design compensation on the imaging position of the optical imaging system according to the installation position of the temperature drift compensation structure E2 in the above-mentioned optical imaging system, the compression amount along the optical axis at room temperature, and the current ambient temperature.

[0125] The waterproof stabilization component designed in the present invention compensates for temperature drift through a mechanical structure. Compared to existing purely optical compensation technologies, this component offers the advantage of ensuring the stability of the optical imaging system. Traditional purely optical compensation solutions are affected by lens fit. If the lenses shift at high temperatures, this affects the optical compensation effect and the imaging quality of the optical imaging system. The addition of the waterproof stabilization component in the present invention allows the internal components of the optical imaging system to be more tightly joined at high temperatures, ensuring that these components do not shift, or that their displacement is minimized, at high temperatures. Combined with optical design compensation technology, this effectively ensures the temperature drift stability and waterproof performance of the optical imaging system at high temperatures or when returning to room temperature after experiencing high temperatures, preventing variations in the optical imaging system, thereby ensuring the imaging quality of the optical imaging system and improving its safety and reliability.

[0126] The present invention is further described below with reference to a number of examples. The following examples are merely preferred embodiments of the present invention, but the present invention is not limited thereto. Any other changes, substitutions, combinations, or simplifications that do not deviate from the novelties of the present invention shall be deemed equivalent replacements and shall be included within the scope of protection of the present invention.

[0127] First embodiment (temperature drift compensation structure E2 is located between the image side surface of the first lens B11 and the first spacer C1)

[0128] See also Figures 4 and 5This embodiment provides an optical imaging system 100 with waterproofing and temperature drift compensation, comprising at least: a lens barrel A, a first optical assembly B1, a second optical assembly B2, a front ring D, a waterproof stabilization assembly E, and a filter F. The first optical assembly B1 includes a first lens B11, and the second optical assembly B2 includes, for example, six optical lenses, such as a second lens B21. This embodiment does not limit the number, optical power, surface shape, or whether the second optical assembly B2 comprises a cemented lens. The second optical assembly B2 also includes spacers Cx, such as first spacers C1, ..., Cx, etc., where x represents the number of spacers, and this embodiment does not limit the number of spacers.

[0129] In this embodiment, the waterproof stabilization assembly E is composed of a waterproof structure E1 with a circular cross-section and a temperature drift compensation structure E2 with a roughly rectangular cross-section. Both the waterproof structure E1 and the temperature drift compensation structure E2 are made of rubber, which can provide strong elasticity. The waterproof structure E1 of the waterproof stabilization assembly E is located between the edge of the image side of the first lens B11 and the step on the inner wall of the lens barrel A. The temperature drift compensation structure E2 is located between the edge of the image side of the first lens B11 and the first spacer C1. The first spacer C1 is located between the first lens B11 and the second lens B21, and is used to support the lenses and control the distance between the lenses, such as Figure 4 .

[0130] The state of waterproof structure E1 at room temperature and high temperature is as follows Figure 5 At room temperature, the waterproof structure E1 and the temperature drift compensation structure E2 assembled in the lens barrel A are in a deep compression state (the dotted structure in the figure is the natural state of the waterproof structure E1 at room temperature and without force). At this time, the lens barrel A and the various components are tightly combined without any gaps. When the temperature changes (such as rising), due to the difference in expansion, there is a gap between the lens barrel A and the internal components. At this time, the waterproof structure E1 and the temperature drift compensation structure E2 in a deep compression state can generate enough elastic force to squeeze the optical lens, spacer and other components inside the lens to both sides due to the generation of the gap, thereby making the position of the internal components of the optical imaging system relatively stable. Specifically, at high temperatures, due to the difference in materials between the various components, the maximum expansion amount ΔH of the internal components (lenses, spacers, etc.) of the optical imaging system n-max It should be smaller than the maximum expansion of the lens barrel A ΔH b-max Therefore, there will be gaps between the components inside the optical imaging system, and the maximum size of the gap is ΔH b-max -ΔH n-max The compression of the temperature drift compensation structure E2 at room temperature is ΔDw>(ΔH b-max -ΔH n-max), so when the temperature changes, the temperature drift compensation structure E2 can generate sufficient elastic force to squeeze the optical lens, spacer and other components inside the optical imaging system to both sides, and the squeezing force of the temperature drift compensation structure E2 to both sides is sufficient to keep the components stable under vibration. At this time, the position of the gap generated by the expansion difference between the lens barrel A and the internal structure can be guaranteed to be controlled between the image-side plane of the first lens B11 and the first spacer C1, and the size can be guaranteed to be consistent. At the same time, since the compression amount of the waterproof structure E1 and the temperature drift compensation structure E2 in the waterproof stabilization component E along the optical axis meets the condition 2ΔDf<ΔDw<5ΔDf, it can not only ensure that the temperature drift compensation structure E2 can be fully compressed to provide sufficient elastic force, but also ensure that the rebound amount of the temperature drift compensation structure E2 during high-temperature expansion will not be too large, causing the waterproof structure E1 to completely relax and fail, thereby ensuring the stable waterproof performance of the optical imaging system, thereby effectively ensuring that the optical system of the optical imaging system remains unchanged in a high-temperature environment or after experiencing high temperatures and returning to normal temperature, and effectively ensuring the imaging quality of the optical imaging system under environmental changes. It is suitable for many fields such as adjustable-focus vehicle lenses, outdoor monitoring, and sports cameras.

[0131] Furthermore, in this embodiment, the waterproof stabilizing component E can be made of plastic material, which effectively improves the mechanical strength of the waterproof stabilizing component E and effectively ensures the stability of the waterproof stabilizing component E.

[0132] Furthermore, in this embodiment, the waterproof structure E1 and the temperature drift compensation structure E2 of the waterproof stabilizing component E are not easily separated using an integrated molding technology, which can effectively ensure the structural stability of the waterproof stabilizing component E. Figure 3 Figure (1) in .

[0133] Furthermore, as a preferred embodiment but not a limitation, the waterproof stabilizing assembly E and the first spacer C1 can be secured with glue for greater stability. Furthermore, in this embodiment, to ensure that the waterproof stabilizing assembly E can effectively squeeze the optical lens, spacer, and other components within the optical imaging system, the lens barrel A can be replaced with a copper material to further reduce its expansion.

[0134] Second Embodiment (Temperature Drift Compensation Structure E2 Located Between the Image-Side of the First Lens B11 and the Object-Side of the Second Lens B21)

[0135] See also Figures 6 and 7This embodiment provides an optical imaging system 200 with waterproofing and temperature drift compensation, comprising at least: a lens barrel A, a first optical assembly B1, a second optical assembly B2, a front ring D, a waterproof stabilization assembly E, and a filter F. The first optical assembly B1 includes a first lens B11, and the second optical assembly B2 includes, for example, six optical lenses, such as a second lens B21. This embodiment does not limit the number, optical power, surface shape, or whether the second optical assembly B2 comprises a cemented lens. The second optical assembly B2 also includes spacers Cx, such as first spacers C1, ..., Cx, etc., where x represents the number of spacers, and this embodiment does not limit the number of spacers.

[0136] In this embodiment, the waterproof stabilization assembly E is composed of a waterproof structure E1 with a circular cross-section and a temperature drift compensation structure E2 with a rectangular cross-section. Both the waterproof structure E1 and the temperature drift compensation structure E2 are made of rubber material, which can provide strong elasticity. The waterproof structure E1 of the waterproof stabilization assembly E is located between the edge of the image side of the first lens B11 and the step on the inner wall of the lens barrel A. The temperature drift compensation structure E2 is located between the edge of the image side of the first lens B11 and the edge of the object side of the second lens B21. It is used to support the lenses and control the distance between the lenses, such as Figure 6 The state of the waterproof structure E1 at room temperature and high temperature is as follows Figure 7 , due to temperature changes, the maximum expansion of the internal components of the optical imaging system (lenses, spacers, etc.) ΔH n-max It should be smaller than the maximum expansion of the lens barrel A ΔH b-max Therefore, there will be gaps between the components inside the optical imaging system, and the maximum size of the gap is ΔH b-max -ΔH n-max The compression of the temperature drift compensation structure E2 at room temperature is ΔDw>(ΔH b-max -ΔH n-max), so when the temperature changes, the temperature drift compensation structure E2 can generate sufficient elastic force to squeeze the optical lens, spacer and other components inside the optical imaging system to both sides, and the squeezing force of the temperature drift compensation structure E2 to both sides is sufficient to keep the components stable under vibration. At this time, the position of the gap generated by the expansion difference between the lens barrel A and the internal structure can be guaranteed to be controlled between the image-side plane of the first lens B11 and the object-side plane of the second lens B21, and the size can be guaranteed to be consistent. At the same time, since the compression amount of the waterproof structure E1 and the temperature drift compensation structure E2 in the waterproof stabilization component E along the optical axis satisfies the relationship 2ΔDf<ΔDw<5ΔDf, it can not only ensure that the temperature drift compensation structure E2 can be fully compressed to provide sufficient elastic force, but also ensure that the rebound amount of the temperature drift compensation structure E2 during high-temperature expansion will not be too large, causing the waterproof structure E1 to completely relax and fail, thereby ensuring the stable waterproof performance of the optical imaging system, thereby effectively ensuring that the optical system of the optical imaging system remains unchanged in a high-temperature environment or after returning to normal temperature after experiencing high temperatures, and effectively ensuring the imaging quality of the optical imaging system under environmental changes. It is suitable for many fields such as adjustable-focus vehicle lenses, outdoor monitoring, and sports cameras.

[0137] Furthermore, in this embodiment, the waterproof stabilizing component E can be made of plastic material, which effectively improves the mechanical strength of the waterproof stabilizing component E and effectively ensures the stability of the waterproof stabilizing component E.

[0138] Furthermore, in this embodiment, the waterproof structure E1 and the temperature drift compensation structure E2 of the waterproof stabilizing component E are not easily separated using an integrated molding technology, which can effectively ensure the structural stability of the waterproof stabilizing component E. Figure 3 Figure (2) in .

[0139] Furthermore, as a preferred embodiment but not a limitation, the waterproof stabilizing assembly E and the lens barrel A can be secured with glue for greater stability. Furthermore, in this embodiment, to ensure that the waterproof stabilizing assembly E can effectively squeeze the optical lens, spacer, and other components within the optical imaging system, the lens barrel A can be replaced with a copper material to further reduce its expansion.

[0140] Third embodiment (temperature drift compensation structure E2 is located between the front ring D and the object side of the first lens B11)

[0141] See also Figures 8 and 9 This embodiment provides an optical imaging system 300 with waterproofing and temperature drift compensation, comprising at least: a lens barrel A, a first optical assembly B1, a second optical assembly B2, a front ring D, and a waterproof stabilization assembly E. The first optical assembly B1 includes a first lens B11, and the second optical assembly B2 includes spacers Cx, where x represents the number of spacers, and this embodiment does not limit the number of spacers.

[0142] In this embodiment, the waterproof stabilization component E is composed of a waterproof structure E1 with a trapezoidal cross section and a temperature drift compensation structure E2 with a rectangular cross section. Both the waterproof structure E1 and the temperature drift compensation structure E2 are made of plastic materials, which can provide strong mechanical strength. The waterproof stabilization component E is located between the front ring D and the edge of the object side of the first lens B11. Figure 8 The state of the waterproof structure E1 at room temperature and high temperature is as follows Figure 9 , due to temperature changes, the maximum expansion of the internal components of the optical imaging system (lenses, spacers, etc.) ΔH n-max It should be smaller than the maximum expansion of the lens barrel A ΔH b-max Therefore, there will be gaps between the components inside the optical imaging system, and the maximum size of the gap is ΔH b-max -ΔH n-max The compression of the temperature drift compensation structure E2 at room temperature is ΔDw>(ΔH b-max -ΔH n-max ), so when the temperature changes, the temperature drift compensation structure E2 can generate sufficient elastic force to squeeze the optical lens, spacer and other components inside the optical imaging system toward the image side, and the squeezing force of the temperature drift compensation structure E2 toward the image side is sufficient to keep the components stable under vibration. At this time, the position of the gap between the lens barrel A and the internal structure caused by the expansion difference can be guaranteed to be controlled between the object side plane of the first lens B11 and the front ring D, and the size can be guaranteed to be consistent. At the same time, since the compression amount of the waterproof structure E1 and the temperature drift compensation structure E2 in the waterproof stabilization component E along the optical axis satisfies the relationship 2ΔDf<ΔDw<5ΔDf, it can not only ensure that the temperature drift compensation structure E2 can be fully compressed to provide sufficient elastic force, but also ensure that the rebound amount of the temperature drift compensation structure E2 during high-temperature expansion will not be too large, causing the waterproof structure E1 to completely relax and fail, thereby ensuring the stable waterproof performance of the optical imaging system, thereby effectively ensuring that the optical system of the optical imaging system remains unchanged in a high-temperature environment or after returning to normal temperature after experiencing high temperatures, and effectively ensuring the imaging quality of the optical imaging system under environmental changes. It is suitable for many fields such as adjustable-focus vehicle lenses, outdoor monitoring, and sports cameras.

[0143] Furthermore, as a specific implementation rather than a limitation, a groove may be provided inside the front ring D for placing the waterproof stabilizing component E, which has a simple structure and is easy to process and assemble.

[0144] Furthermore, in this embodiment, the waterproof stabilizing component E may be made of rubber material, which can provide greater elasticity to ensure the squeezing force of internal components when the temperature changes.

[0145] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 and the temperature drift compensation structure E2 of the waterproof stabilization component E are not easily separated by using an integrated molding technology, which can effectively ensure the structural stability of the waterproof stabilization component E. Figure 3 Figure (3) in .

[0146] Furthermore, as a preferred embodiment but not a limitation, the grooves of the waterproof stabilizing component E and the front ring D are interference fit, which can effectively fix the waterproof stabilizing component E and facilitate assembly.

[0147] Furthermore, as a preferred embodiment but not a limitation, the waterproof stabilizing component E and the groove of the front ring D can be fixed with glue to make it more stable.

[0148] Furthermore, in this embodiment, in order to ensure that the waterproof stabilization component E can effectively squeeze the optical lens, spacer and other components inside the optical imaging system, the lens barrel A can be replaced with a metal copper material to further reduce the expansion of the lens barrel A.

[0149] Fourth Embodiment (Temperature Drift Compensation Structure E2 Located Between the Image-Side Surface of the First Lens B11 and the First Spacer C1)

[0150] See also Figures 10 and 11 This embodiment provides an optical imaging system 400 with waterproofing and temperature drift compensation, comprising at least: a lens barrel A, a first optical assembly B1, a second optical assembly B2, a front ring D, and a waterproof stabilization assembly E. The first optical assembly B1 includes a first lens B11, and the second optical assembly B2 includes spacers Cx, such as first spacers C1, ..., Cx, etc., where x represents the number of spacers, and this embodiment does not limit the number of spacers.

[0151] In this embodiment, the waterproof stabilization assembly E is composed of a waterproof structure E1 with a circular cross-section and a temperature drift compensation structure E2 with a rectangular cross-section. The waterproof structure E1 is made of rubber, and the temperature drift compensation structure E2 is made of plastic. The two are bonded together via a connecting component. The waterproof structure E1 of the waterproof stabilization assembly E is located between the front ring D and the object side edge of the first lens B11. The temperature drift compensation structure E2 is located between the image side edge of the first lens B11 and the first spacer C1. The first spacer C1 is located between the first lens B11 and the second lens B21, and is used to support the lenses and control the distance between the lenses. Figure 10 The state of the waterproof structure E1 at room temperature and high temperature is as follows Figure 11 , due to temperature changes, the maximum expansion of the internal components of the optical imaging system (lenses, spacers, etc.) ΔH n-max It should be smaller than the maximum expansion of the lens barrel A ΔH b-max Therefore, there will be gaps between the components inside the optical imaging system, and the maximum size of the gap is ΔH b-max -ΔH n-max The compression of the temperature drift compensation structure E2 at room temperature is ΔDw>(ΔH b-max -ΔH n-max), so when the temperature changes, the temperature drift compensation structure E2 can generate sufficient elastic force to squeeze the optical lens, spacer and other components inside the optical imaging system to both sides, and the squeezing force of the temperature drift compensation structure E2 to both sides is sufficient to keep the components stable under vibration. At this time, the position of the gap generated by the expansion difference between the lens barrel A and the internal structure can be guaranteed to be controlled between the image-side plane of the first lens B11 and the first spacer C1, and the size can be guaranteed to be consistent. At the same time, since the compression amount of the waterproof structure E1 and the temperature drift compensation structure E2 in the waterproof stabilization component E along the optical axis satisfies the relationship 2ΔDf<ΔDw<5ΔDf, it can not only ensure that the temperature drift compensation structure E2 can be fully compressed to provide sufficient elastic force, but also ensure that the rebound amount of the temperature drift compensation structure E2 will not be too large when the temperature changes, causing the waterproof structure E1 to be over-compressed and aged, thereby ensuring the stable waterproof performance of the optical imaging system, thereby effectively ensuring that the optical system of the optical imaging system remains unchanged in a high temperature environment or after experiencing high temperature and returning to normal temperature, and effectively ensuring the imaging quality of the optical imaging system under environmental changes. It is suitable for many fields such as adjustable focus vehicle lenses, outdoor monitoring, and sports cameras.

[0152] Furthermore, as a specific implementation rather than a limitation, a groove may be provided inside the front ring D for accommodating the waterproof structure E1 of the waterproof stabilizing assembly E. The structure is simple and easy to process and assemble.

[0153] Furthermore, in this embodiment, the temperature drift compensation structure E2 of the waterproof stabilizing component E may be made of a plastic material, which can provide greater mechanical strength and ensure the stability of the temperature drift compensation structure E2.

[0154] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 of the waterproof stabilization component E can be made of rubber material, which can provide greater elastic deformation and ensure good waterproof performance.

[0155] Furthermore, as a preferred embodiment but not limitation, the temperature drift compensation structure E2 and the waterproof structure E1 of the waterproof stabilization component E can be bonded to each other through a connecting component.

[0156] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 of the waterproof stabilizing component E and the groove of the front ring D are interference fit, which can effectively fix the waterproof structure E1 of the waterproof stabilizing component E and facilitate assembly.

[0157] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 of the waterproof stabilizing component E and the groove of the front ring D can be fixed with glue to make it more stable.

[0158] Furthermore, in this embodiment, in order to ensure that the waterproof stabilization component E can effectively squeeze the optical lens, spacer and other components inside the optical imaging system, the lens barrel A can be replaced with a metal copper material to further reduce the expansion of the lens barrel A.

[0159] Fifth embodiment (temperature drift compensation structure E2 is located between the front ring D and the object side of the first lens B11)

[0160] See also Figures 12 to 13 This embodiment provides an optical imaging system 500 with waterproofing and temperature drift compensation, comprising at least: a lens barrel A, a first optical assembly B1, a second optical assembly B2, a front ring D, and a waterproof stabilization assembly E. The first optical assembly B1 includes a first lens B11, and the second optical assembly B2 includes spacers Cx, where x represents the number of spacers, and this embodiment does not limit the number of spacers.

[0161] In this embodiment, the waterproof stabilization assembly E is composed of a waterproof structure E1 with a circular cross-section and a temperature drift compensation structure E2 with a square cross-section. Both the waterproof structure E1 and the temperature drift compensation structure E2 are made of rubber, which can provide strong elastic deformation. The waterproof structure E1 of the waterproof stabilization assembly E is located between the edge of the image side of the first lens B11 and the lens barrel A, and the temperature drift compensation structure E2 is located between the front ring D and the edge of the object side of the first lens B11. Figure 12 The state of the waterproof structure E1 at room temperature and high temperature is as follows Figure 13 , due to temperature changes, the maximum expansion of the internal components of the optical imaging system (lenses, spacers, etc.) ΔH n-max It should be smaller than the maximum expansion of the lens barrel A ΔH b-max Therefore, there will be gaps between the components inside the optical imaging system, and the maximum size of the gap is ΔH b-max -ΔH n-max The compression of the temperature drift compensation structure E2 at room temperature is ΔDw>(ΔH b-max -ΔH n-max), so when the temperature changes, the temperature drift compensation structure E2 can generate sufficient elastic force to squeeze the optical lens, spacer and other components inside the optical imaging system toward the image side, and the squeezing force of the temperature drift compensation structure E2 toward the image side is sufficient to keep the components stable under vibration. At this time, the position of the gap between the lens barrel A and the internal structure caused by the expansion difference can be guaranteed to be controlled between the object side plane of the first lens B11 and the front ring D, and the size can be guaranteed to be consistent. At the same time, since the compression amount of the waterproof structure E1 and the temperature drift compensation structure E2 in the waterproof stabilization component E along the optical axis satisfies the relationship 2ΔDf<ΔDw<5ΔDf, it can not only ensure that the temperature drift compensation structure E2 can be fully compressed to provide sufficient elastic force, but also ensure that the rebound amount of the temperature drift compensation structure E2 will not be too large when the temperature changes, causing the waterproof structure E1 to be over-compressed and aged, thereby ensuring the stable waterproof performance of the optical imaging system, thereby effectively ensuring that the optical system of the optical imaging system remains unchanged in a high temperature environment or after experiencing high temperature and returning to normal temperature, and effectively ensuring the imaging quality of the optical imaging system under environmental changes. It is suitable for many fields such as adjustable focus vehicle lenses, outdoor monitoring, and sports cameras.

[0162] Furthermore, as a specific implementation rather than a limitation, a groove may be provided inside the front ring D for accommodating the temperature drift compensation structure E2 of the waterproof stabilization component E. The structure is simple and easy to process and assemble.

[0163] Furthermore, in this embodiment, the waterproof stabilizing component E may be made of plastic material, which can provide greater mechanical strength and ensure the stability of the temperature drift compensation structure E2.

[0164] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 and the temperature drift compensation structure E2 of the waterproof stabilization component E are not easily separated by using an integrated molding technology, which can effectively ensure the structural stability of the waterproof stabilization component E. Figure 3 Figure (5) in .

[0165] Furthermore, as a preferred embodiment but not limitation, the temperature drift compensation structure E2 of the waterproof stabilization component E and the groove of the front ring D are interference fit, which can effectively fix the temperature drift compensation structure E2 of the waterproof stabilization component E and facilitate assembly.

[0166] Furthermore, as a preferred embodiment but not a limitation, the temperature drift compensation structure E2 of the waterproof stabilization component E and the groove of the front ring D can be fixed with glue to make it more stable.

[0167] Furthermore, in this embodiment, in order to ensure that the waterproof stabilizing assembly E can effectively squeeze the optical lens, spacer and other components inside the optical imaging system, the lens barrel A can be replaced with stainless steel to further reduce the expansion of the lens barrel A.

[0168] Sixth embodiment (temperature drift compensation structure E2 is located between the image-side surface of the first lens B11 and the object-side surface of the second lens B21)

[0169] See also Figures 14 and 15 This embodiment provides an optical imaging system 600 with waterproofing and temperature drift compensation, comprising at least: a lens barrel A, a first optical assembly B1, a second optical assembly B2, a front ring D, and a waterproof stabilization assembly E. The first optical assembly B1 includes a first lens B11, and the second optical assembly B2 includes, for example, six optical lenses, including a second lens B21. This embodiment does not limit the number, optical power, surface shape, or whether the second optical assembly B2 comprises a cemented lens. The second optical assembly B2 also includes spacers Cx, where x represents the number of spacers. This embodiment does not limit the number of spacers.

[0170] In this embodiment, the waterproof stabilization assembly E is composed of a waterproof structure E1 with a circular cross-section and a temperature drift compensation structure E2 with a rectangular cross-section. Both the waterproof structure E1 and the temperature drift compensation structure E2 are made of rubber materials, which can provide strong elastic deformation. The waterproof structure E1 of the waterproof stabilization assembly E is located between the edge of the object side of the first lens B11 and the front ring D, and the temperature drift compensation structure E2 is located between the edge of the image side of the first lens B11 and the edge of the object side of the second lens B21. Figure 14 The state of the waterproof structure E1 at room temperature and high temperature is as follows Figure 15 , due to temperature changes, the maximum expansion of the internal components of the optical imaging system (lenses, spacers, etc.) ΔH n-max It should be smaller than the maximum expansion of the lens barrel A ΔH b-max Therefore, there will be gaps between the components inside the optical imaging system, and the maximum size of the gap is ΔH b-max -ΔH n-max The compression of the temperature drift compensation structure E2 at room temperature is ΔDw>(ΔH b-max -ΔH n-max), so when the temperature changes, the temperature drift compensation structure E2 can generate sufficient elastic force to squeeze the optical lens, spacer and other components inside the optical imaging system to both sides, and the squeezing force of the temperature drift compensation structure E2 to both sides is sufficient to keep the components stable under vibration. At this time, the position of the gap generated by the expansion difference between the lens barrel A and the internal structure can be guaranteed to be controlled between the image-side plane of the first lens B11 and the object-side platform of the second lens B21, and the size can be guaranteed to be consistent. At the same time, since the compression amount of the waterproof structure E1 and the temperature drift compensation structure E2 in the waterproof stabilization component E along the optical axis satisfies the relationship 2ΔDf<ΔDw<5ΔDf, it can not only ensure that the temperature drift compensation structure E2 can be fully compressed to provide sufficient elastic force, but also ensure that the rebound amount of the temperature drift compensation structure E2 will not be too large when the temperature changes, causing the waterproof structure E1 to be over-compressed and aged, thereby ensuring the stable waterproof performance of the optical imaging system, thereby effectively ensuring that the optical system of the optical imaging system remains unchanged in a high temperature environment or after experiencing high temperature and returning to normal temperature, and effectively ensuring the imaging quality of the optical imaging system under environmental changes. It is suitable for many fields such as adjustable focus vehicle lenses, outdoor monitoring, and sports cameras.

[0171] Furthermore, as a specific implementation rather than a limitation, a groove may be provided inside the front ring D for accommodating the waterproof structure E1 of the waterproof stabilizing assembly E. The structure is simple and easy to process and assemble.

[0172] Furthermore, in this embodiment, the waterproof stabilizing component E may be made of plastic material, which can provide greater mechanical strength and ensure the stability of the temperature drift compensation structure E2.

[0173] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 and the temperature drift compensation structure E2 of the waterproof stabilization component E are not easily separated by using an integrated molding technology, which can effectively ensure the structural stability of the waterproof stabilization component E. Figure 3 Figure (6) in .

[0174] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 of the waterproof stabilizing component E and the groove of the front ring D are interference fit, which can effectively fix the waterproof structure E1 of the waterproof stabilizing component E and facilitate assembly.

[0175] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 of the waterproof stabilizing component E and the groove of the front ring D can be fixed with glue to make it more stable.

[0176] Furthermore, in this embodiment, in order to ensure that the waterproof stabilizing assembly E can effectively squeeze the optical lens, spacer and other components inside the optical imaging system, the lens barrel A can be replaced with stainless steel to further reduce the expansion of the lens barrel A.

[0177] Seventh Embodiment (Temperature Drift Compensation Structure E2 Located Between the Image-Side Surface of the First Lens B11 and the First Spacer C1)

[0178] See also Figures 16 and 17 This embodiment provides an optical imaging system 700 with waterproofing and temperature drift compensation, comprising at least: a lens barrel A, a first optical assembly B1, a second optical assembly B2, a front ring D, and a waterproof stabilization assembly E. The first optical assembly B1 includes a first lens B11, and the second optical assembly B2 includes, for example, six optical lenses, including a second lens B21. This embodiment does not limit the number, optical power, surface shape, or whether the second optical assembly B2 comprises a cemented lens. The second optical assembly B2 also includes spacers Cx, such as first spacers C1, ..., Cx, etc., where x represents the number of spacers, and this embodiment does not limit the number of spacers.

[0179] In this embodiment, the waterproof stabilization assembly E is composed of a waterproof structure E1 with a circular cross-section and a temperature drift compensation structure E2 with a circular cross-section. Both the waterproof structure E1 and the temperature drift compensation structure E2 are made of rubber materials and can provide strong elastic deformation. The waterproof structure E1 of the waterproof stabilization assembly E is located between the periphery (side wall) of the first lens B11 and the lens barrel A. The temperature drift compensation structure E2 is located between the image side edge of the first lens B11 and the first spacer C1. The first spacer C1 is located between the first lens B11 and the second lens B21 and is used to support the lenses and control the distance between the lenses, such as Figure 16 The state of the waterproof structure E1 at room temperature and high temperature is as follows Figure 17 , due to temperature changes, the maximum expansion of the internal components of the optical imaging system (lenses, spacers, etc.) ΔH n-max It should be smaller than the maximum expansion of the lens barrel A ΔH b-max Therefore, there will be gaps between the components inside the optical imaging system, and the maximum size of the gap is ΔH b-max -ΔH n-max The compression of the temperature drift compensation structure E2 at room temperature is ΔDw>(ΔH b-max -ΔH n-max), so when the temperature changes, the temperature drift compensation structure E2 can generate sufficient elastic force to squeeze the optical lens, spacer and other components inside the optical imaging system to both sides, and the squeezing force of the temperature drift compensation structure E2 to both sides is sufficient to keep the components stable under vibration. At this time, the position of the gap generated by the expansion difference between the lens barrel A and the internal structure can be guaranteed to be controlled between the image-side plane of the first lens B11 and the first spacer C1, and the size can be guaranteed to be consistent. At the same time, since the compression amount of the waterproof structure E1 and the temperature drift compensation structure E2 in the waterproof stabilization component E along the optical axis satisfies the relationship 2ΔDf<ΔDw<5ΔDf, it can not only ensure that the temperature drift compensation structure E2 can be fully compressed to provide sufficient elastic force, but also ensure that the rebound amount of the temperature drift compensation structure E2 will not be too large when the temperature changes, causing the waterproof structure E1 to be over-compressed and aged, thereby ensuring the stable waterproof performance of the optical imaging system, thereby effectively ensuring that the optical system of the optical imaging system remains unchanged in a high temperature environment or after experiencing high temperature and returning to normal temperature, and effectively ensuring the imaging quality of the optical imaging system under environmental changes. It is suitable for many fields such as adjustable focus vehicle lenses, outdoor monitoring, and sports cameras.

[0180] Furthermore, as a specific implementation but not limitation, the inner wall of the lens barrel A can be grooved for accommodating the waterproof structure E1 of the waterproof stabilization assembly E. The structure is simple and easy to process and assemble.

[0181] Furthermore, in this embodiment, the waterproof stabilizing component E may be made of plastic material, which can provide greater mechanical strength and ensure the stability of the temperature drift compensation structure E2.

[0182] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 and the temperature drift compensation structure E2 of the waterproof stabilization component E are not easily separated by using an integrated molding technology, which can effectively ensure the structural stability of the waterproof stabilization component E. Figure 3 Figure (7) in .

[0183] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 of the waterproof stabilizing component E and the groove of the lens barrel A are interference fit, which can effectively fix the waterproof structure E1 of the waterproof stabilizing component E and facilitate assembly.

[0184] Furthermore, as a preferred embodiment but not a limitation, the waterproof structure E1 of the waterproof stabilizing assembly E and the groove of the lens barrel A can be fixed with glue to make them more stable.

[0185] Furthermore, in this embodiment, in order to ensure that the waterproof stabilization component E can effectively squeeze the optical lens, spacer and other components inside the optical imaging system, the lens barrel A can be replaced with a metal copper material to further reduce the expansion of the lens barrel A.

[0186] Eighth Embodiment (Temperature Drift Compensation Structure E2 Located Between Front Ring D and Object-Side Surface of First Lens B11)

[0187] See also Figures 18 and 19 This embodiment provides an optical imaging system 800 with waterproofing and temperature drift compensation, comprising at least: a lens barrel A, a first optical assembly B1, a second optical assembly B2, a front ring D, and a waterproof stabilization assembly E. The first optical assembly B1 includes a first lens B11, and the second optical assembly B2 includes spacers Cx, where x represents the number of spacers, and this embodiment does not limit the number of spacers.

[0188] In this embodiment, the waterproof stabilization assembly E is composed of a waterproof structure E1 with a circular cross-section and a temperature drift compensation structure E2 with a trapezoidal cross-section. The waterproof structure E1 is made of rubber, and the temperature drift compensation structure E2 is made of plastic. The waterproof structure E1 of the waterproof stabilization assembly E is located between the periphery (side wall) of the first lens B11 and the lens barrel A, and the temperature drift compensation structure E2 is located between the edge of the object side of the first lens B11 and the front ring D, as shown in FIG. Figure 18 The state of the waterproof structure E1 at room temperature and high temperature is as follows Figure 19 , due to temperature changes, the maximum expansion of the internal components of the optical imaging system (lenses, spacers, etc.) ΔH n-max It should be smaller than the maximum expansion of the lens barrel A ΔH b-max Therefore, there will be gaps between the components inside the optical imaging system, and the maximum size of the gap is ΔH b-max -ΔH n-max The compression of the temperature drift compensation structure E2 at room temperature is ΔDw>(ΔH b-max -ΔH n-max ), so when the temperature changes, the temperature drift compensation structure E2 can generate sufficient elastic force to squeeze the optical lens, spacer and other components inside the optical imaging system toward the image side, and the squeezing force of the temperature drift compensation structure E2 toward the image side is sufficient to keep the components stable under vibration. At this time, the position of the gap between the lens barrel A and the internal structure caused by the expansion difference can be guaranteed to be controlled between the object side plane of the first lens B11 and the front ring D, and the size can be guaranteed to be consistent. At the same time, since the compression amount of the waterproof structure E1 and the temperature drift compensation structure E2 in the waterproof stabilization component E along the optical axis satisfies the relationship 2ΔDf<ΔDw<5ΔDf, it can not only ensure that the temperature drift compensation structure E2 can be fully compressed to provide sufficient elastic force, but also ensure that the rebound amount of the temperature drift compensation structure E2 will not be too large when the temperature changes, causing the waterproof structure E1 to be over-compressed and aged, thereby ensuring the stable waterproof performance of the optical imaging system, thereby effectively ensuring that the optical system of the optical imaging system remains unchanged in a high temperature environment or after experiencing high temperature and returning to normal temperature, and effectively ensuring the imaging quality of the optical imaging system under environmental changes. It is suitable for many fields such as adjustable focus vehicle lenses, outdoor monitoring, and sports cameras.

[0189] Furthermore, as a specific implementation rather than a limitation, the inner wall of the front ring D can be grooved to accommodate the temperature drift compensation structure E2 of the waterproof stabilization component E. The structure is simple and easy to process and assemble.

[0190] Furthermore, in this embodiment, the temperature drift compensation structure E2 of the waterproof stabilization component E may be made of a rubber material, which can provide a large elastic deformation, thereby ensuring that the temperature drift compensation structure E2 has a large elastic force.

[0191] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 and the temperature drift compensation structure E2 of the waterproof stabilization assembly E are bonded to each other through a connecting component.

[0192] Furthermore, as a preferred embodiment but not limitation, the temperature drift compensation structure E2 of the waterproof stabilization component E and the groove of the front ring D are interference fit, which can effectively fix the temperature drift compensation structure E2 of the waterproof stabilization component E and facilitate assembly.

[0193] Furthermore, as a preferred embodiment but not a limitation, the temperature drift compensation structure E2 of the waterproof stabilization component E and the groove of the front ring D can be fixed with glue to make it more stable.

[0194] Furthermore, in this embodiment, in order to ensure that the waterproof stabilization component E can effectively squeeze the optical lens, spacer and other components inside the optical imaging system, the lens barrel A can be replaced with a metal copper material to further reduce the expansion of the lens barrel A.

[0195] Ninth Embodiment (Temperature Drift Compensation Structure E2 Located Between the Image-Side of the First Lens B11 and the Object-Side of the Second Lens B21)

[0196] See also Figures 20 to 21 The present invention provides an optical imaging system 900 with waterproofing and temperature drift compensation, comprising at least: a lens barrel A, a first optical assembly B1, a second optical assembly B2, a front ring D, and a waterproof stabilization assembly E. The first optical assembly B1 includes a first lens B11, and the second optical assembly B2 includes, for example, six optical lenses, including a second lens B21. This embodiment does not limit the number, optical power, surface shape, or whether the second optical assembly B2 comprises a cemented lens. The second optical assembly B2 also includes spacers Cx, where x represents the number of spacers. This embodiment does not limit the number of spacers.

[0197] In this embodiment, the waterproof stabilization assembly E is composed of a waterproof structure E1 with a square cross-section and a temperature drift compensation structure E2 with a rectangular cross-section. Both the waterproof structure E1 and the temperature drift compensation structure E2 are made of plastic materials, which can provide strong mechanical strength. The waterproof structure E1 of the waterproof stabilization assembly E is located between the periphery (side wall) of the first lens B11 and the lens barrel A, and the temperature drift compensation structure E2 is located between the image side edge of the first lens B11 and the object side edge of the second lens B21, as shown in FIG. Figure 20 The state of the waterproof structure E1 at room temperature and high temperature is as follows Figure 21 , due to temperature changes, the maximum expansion of the internal components of the optical imaging system (lenses, spacers, etc.) ΔH n-max It should be smaller than the maximum expansion of the lens barrel A ΔH b-max Therefore, there will be gaps between the components inside the optical imaging system, and the maximum size of the gap is ΔH b-max -ΔH n-max The compression of the temperature drift compensation structure E2 at room temperature is ΔDw>(ΔH b-max -ΔH n-max ), so when the temperature changes, the temperature drift compensation structure E2 can generate sufficient elastic force to squeeze the optical lens, spacer and other components inside the optical imaging system to both sides, and the squeezing force of the temperature drift compensation structure E2 to both sides is sufficient to keep the components stable under vibration. At this time, the position of the gap generated by the expansion difference between the lens barrel A and the internal structure can be guaranteed to be controlled between the image side plane of the first lens B11 and the image side plane of the second lens B21, and the size can be guaranteed to be consistent. At the same time, since the compression amount of the waterproof structure E1 and the temperature drift compensation structure E2 in the waterproof stabilization component E along the optical axis satisfies the relationship 2ΔDf<ΔDw<5ΔDf, it can not only ensure that the temperature drift compensation structure E2 can be fully compressed to provide sufficient elastic force, but also ensure that the rebound amount of the temperature drift compensation structure E2 will not be too large when the temperature changes, causing the waterproof structure E1 to be over-compressed and aged, thereby ensuring the stable waterproof performance of the optical imaging system, thereby effectively ensuring that the optical system of the optical imaging system remains unchanged in a high temperature environment or after experiencing high temperature and returning to normal temperature, and effectively ensuring the imaging quality of the optical imaging system under environmental changes. It is suitable for many fields such as adjustable focus vehicle lenses, outdoor monitoring, and sports cameras.

[0198] Furthermore, as a specific implementation but not limitation, the inner wall of the lens barrel A can be grooved for accommodating the waterproof structure E1 of the waterproof stabilization assembly E. The structure is simple and easy to process and assemble.

[0199] Furthermore, in this embodiment, the waterproof stabilizing component E may be made of rubber material, which can provide greater elastic deformation and ensure that the waterproof structure E1 has greater elastic force.

[0200] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 and the temperature drift compensation structure E2 of the waterproof stabilization component E are not easily separated by using an integrated molding technology, which can effectively ensure the structural stability of the waterproof stabilization component E. Figure 3 Figure (9) in .

[0201] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 of the waterproof stabilizing component E and the groove of the lens barrel A are interference fit, which can effectively fix the waterproof structure E1 of the waterproof stabilizing component E and facilitate assembly.

[0202] Furthermore, as a preferred embodiment but not a limitation, the waterproof structure E1 of the waterproof stabilizing assembly E and the groove of the lens barrel A can be fixed with glue to make them more stable.

[0203] Furthermore, in this embodiment, in order to ensure that the waterproof stabilizing assembly E can effectively squeeze the optical lens, spacer and other components inside the optical imaging system, the lens barrel A can be replaced with stainless steel to further reduce the expansion of the lens barrel A.

[0204] Tenth Embodiment (Temperature Drift Compensation Structure E2 Located Between the Image-Side Plane of the (m)th Lens B2m and the Inner Wall of the Lens Barrel A)

[0205] See also Figure 22 This embodiment provides an optical imaging system 1000 with waterproofing and temperature drift compensation, comprising at least: a lens barrel A, a first optical assembly B1, a second optical assembly B2, a front ring D, and a waterproof stabilization assembly E. The first optical assembly B1 includes a first lens B11, and the second optical assembly B2 includes, for example, a second lens B21, ..., and an m-th lens B2m, where m represents the number of lenses in the second optical assembly B2 and the sequence number of the last lens. This embodiment does not limit the number, optical power, surface shape, or whether the second optical assembly B2 comprises a cemented lens.

[0206] In this embodiment, the waterproof stabilization assembly E is composed of a waterproof structure E1 with a circular cross-section and a temperature drift compensation structure E2 with a circular cross-section. Both the waterproof structure E1 and the temperature drift compensation structure E2 are made of plastic or rubber materials, which can provide strong mechanical strength. The waterproof structure E1 of the waterproof stabilization assembly E is located between the image side edge of the first lens B11 and the inner wall of the lens barrel A, and the temperature drift compensation structure E2 is located between the image side edge of the m-th lens B2m and the inner wall of the lens barrel A, as shown in FIG. Figure 22At room temperature, the waterproof structure E1 and the temperature drift compensation structure E2 are compressed along the optical axis according to preset conditions and assembled within the optical imaging system. At high temperatures, some of the compression is released to maintain the internal components of the optical imaging system in a compressed state despite changes in ambient temperature. The conditions for each component within the optical imaging system can be referenced in other embodiments and will not be repeated here.

[0207] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 and the temperature drift compensation structure E2 of the waterproof stabilization component E are independently manufactured and formed.

[0208] Furthermore, as a specific implementation but not limitation, the inner wall of the lens barrel A can be grooved for accommodating the waterproof structure E1 of the waterproof stabilization assembly E. The structure is simple and easy to process and assemble.

[0209] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 of the waterproof stabilizing component E and the groove of the lens barrel A are interference fit, which can effectively fix the waterproof structure E1 of the waterproof stabilizing component E and facilitate assembly.

[0210] Furthermore, as a preferred embodiment but not a limitation, the waterproof structure E1 of the waterproof stabilizing assembly E and the groove of the lens barrel A can be fixed with glue to make them more stable.

[0211] Furthermore, in this embodiment, in order to ensure that the waterproof stabilizing assembly E can effectively squeeze the optical lens, spacer and other components inside the optical imaging system, the lens barrel A can be replaced with stainless steel to further reduce the expansion of the lens barrel A.

[0212] Eleventh Embodiment (Temperature Drift Compensation Structure E2 Located Between the Image-Side Surface of the (m)th Lens B2m and the Inner Wall of the Lens Barrel A)

[0213] See also Figure 23 This embodiment provides an optical imaging system 1100 with waterproofing and temperature drift compensation, comprising at least: a lens barrel A, a first optical assembly B1, a second optical assembly B2, a front ring D, and a waterproof stabilization assembly E. The first optical assembly B1 includes a first lens B11, and the second optical assembly B2 includes, for example, a second lens B21, ..., and an m-th lens B2m, where m represents the number of lenses in the second optical assembly B2 and the sequence number of the last lens. This embodiment does not limit the number, optical power, surface shape, or whether the second optical assembly B2 comprises a cemented lens.

[0214] In this embodiment, the waterproof stabilization assembly E is composed of a waterproof structure E1 with a circular cross-section and a temperature drift compensation structure E2 with a square cross-section. Both the waterproof structure E1 and the temperature drift compensation structure E2 are made of plastic or rubber materials, which can provide strong mechanical strength. The waterproof structure E1 of the waterproof stabilization assembly E is located between the object side edge of the first lens B11 and the front ring D, and the temperature drift compensation structure E2 is located between the image side edge of the m-th lens B2m and the inner wall of the lens barrel A, as shown in FIG. Figure 23 At room temperature, the waterproof structure E1 and the temperature drift compensation structure E2 are compressed along the optical axis according to preset conditions and assembled within the optical imaging system. At high temperatures, some of the compression is released to maintain the internal components of the optical imaging system in a compressed state despite changes in ambient temperature. The conditions for each component within the optical imaging system can be referenced in other embodiments and will not be repeated here.

[0215] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 and the temperature drift compensation structure E2 of the waterproof stabilization component E are independently manufactured and formed.

[0216] Furthermore, as a specific implementation rather than a limitation, the inner wall of the front ring D can be grooved for placing the waterproof structure E1 of the waterproof stabilization component E, which has a simple structure and is easy to process and assemble.

[0217] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 of the waterproof stabilizing component E and the groove of the front ring D are interference fit, which can effectively fix the waterproof structure E1 of the waterproof stabilizing component E and facilitate assembly.

[0218] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 of the waterproof stabilizing component E and the groove of the front ring D can be fixed with glue to make it more stable.

[0219] Furthermore, in this embodiment, in order to ensure that the waterproof stabilizing assembly E can effectively squeeze the optical lens, spacer and other components inside the optical imaging system, the lens barrel A can be replaced with stainless steel to further reduce the expansion of the lens barrel A.

[0220] Example 12 (Temperature Drift Compensation Structure E2 Located Between the Image-Side Plane of the (m-th) Lens B2m and the Inner Wall of the Lens Barrel A)

[0221] See also Figure 24This embodiment provides an optical imaging system 1200 with waterproofing and temperature drift compensation, comprising at least: a lens barrel A, a first optical assembly B1, a second optical assembly B2, a front ring D, and a waterproof stabilization assembly E. The first optical assembly B1 includes a first lens B11, and the second optical assembly B2 includes, for example, a second lens B21, ..., and an m-th lens B2m, where m represents the number of lenses in the second optical assembly B2 and the sequence number of the last lens. This embodiment does not limit the number, optical power, surface shape, or whether the second optical assembly B2 comprises a cemented lens.

[0222] In this embodiment, the waterproof stabilization assembly E is composed of a waterproof structure E1 with a square cross-section and a temperature drift compensation structure E2 with a rectangular cross-section. Both the waterproof structure E1 and the temperature drift compensation structure E2 are made of plastic or rubber materials, which can provide strong mechanical strength. The waterproof structure E1 of the waterproof stabilization assembly E is located between the periphery (side wall) of the first lens B11 and the lens barrel A, and the temperature drift compensation structure E2 is located between the image side edge of the m-th lens B2m and the inner wall of the lens barrel A, as shown in FIG. Figure 23 At room temperature, the waterproof structure E1 and the temperature drift compensation structure E2 are compressed along the optical axis according to preset conditions and assembled within the optical imaging system. At high temperatures, some of the compression is released to maintain the internal components of the optical imaging system in a compressed state despite changes in ambient temperature. The conditions for each component within the optical imaging system can be referenced in other embodiments and will not be repeated here.

[0223] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 and the temperature drift compensation structure E2 of the waterproof stabilization component E are independently manufactured and formed.

[0224] Furthermore, as a specific implementation but not limitation, the inner wall of the lens barrel A can be grooved for accommodating the waterproof structure E1 of the waterproof stabilization assembly E. The structure is simple and easy to process and assemble.

[0225] Furthermore, as a preferred embodiment but not limitation, the waterproof structure E1 of the waterproof stabilizing component E and the groove of the lens barrel A are interference fit, which can effectively fix the waterproof structure E1 of the waterproof stabilizing component E and facilitate assembly.

[0226] Furthermore, as a preferred embodiment but not a limitation, the waterproof structure E1 of the waterproof stabilizing assembly E and the groove of the lens barrel A can be fixed with glue to make them more stable.

[0227] Furthermore, in this embodiment, in order to ensure that the waterproof stabilizing assembly E can effectively squeeze the optical lens, spacer and other components inside the optical imaging system, the lens barrel A can be replaced with stainless steel to further reduce the expansion of the lens barrel A.

[0228] In summary of the above embodiments, the present invention stabilizes the internal structure of the optical imaging system during temperature changes by adding a waterproof stabilizing component, thereby eliminating the randomness of the gap between the lens barrel and internal components (optical lens, spacer, etc.), ensuring the stability of the gap size and the fixation of the position, and effectively preventing the internal components of the optical imaging system from loosening or irreversible displacement due to external environmental vibrations, collisions, or the internal expansion and contraction of the optical imaging system when in a high temperature state or after returning to room temperature after experiencing high temperature. This effectively ensures the temperature drift stability and waterproof function of the camera module, and improves the environmental stability and safety of the camera module. It is suitable for many fields such as vehicle-mounted lenses, outdoor monitoring, and sports cameras.

[0229] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An optical imaging system, comprising: lens barrel; A first optical component is installed in the lens barrel and is used for optical imaging; A second optical assembly is installed in the lens barrel and is arranged on the image side of the first optical assembly for optical imaging; and Waterproof and stable components, including: a waterproof structure, provided on the object side, image side and / or around the first optical assembly, for sealing and waterproofing the optical imaging system; and a temperature drift compensation structure, provided on the object side and / or image side of the first optical assembly, for keeping the lens barrel, the first optical assembly, and the second optical assembly in a compressed state at all times when the ambient temperature changes; The temperature drift compensation structure is compressed along the optical axis at room temperature and assembled in the optical imaging system. The compression amount ΔDw of the temperature drift compensation structure along the optical axis satisfies the conditional formula: (ΔH b-max -ΔH n-max )<ΔDw<5(ΔH b-max -ΔH n-max ); Where ΔH b-max It represents the absolute value of the maximum expansion of the lens barrel along the optical axis when the temperature changes, ΔH n-max It represents the absolute value of the maximum expansion of the first optical component and the second optical component along the optical axis when the temperature changes.

2. The optical imaging system according to claim 1, wherein the lens barrel includes a front ring, which is sleeved on the first optical component and is used to compress the lens barrel, the first optical component and the second optical component, and the waterproof structure can be arranged between the first optical component and the inner wall of the lens barrel and / or between the first optical component and the front ring.

3. The optical imaging system according to claim 2, wherein the second optical component comprises at least one spacer, the at least one spacer being disposed on the image side of the first optical component and used for supporting the first optical component and the second optical component and / or the second optical components themselves, and the temperature drift compensation structure being disposed in one or more of the following locations: between the first optical component and the second optical component; between the first optical component and the spacer; and between the first optical component and the front ring. 4 . The optical imaging system according to claim 2 , wherein the temperature drift compensation structure is disposed on the image side of the second optical component and between the second optical component and the inner wall of the lens barrel. The optical imaging system according to claim 3 , wherein the waterproof stabilizing component is integrally formed.

6. The optical imaging system according to claim 1 , wherein the waterproof structure and the temperature drift compensation structure are compressed along the optical axis at room temperature and assembled in the optical imaging system, and a compression amount ΔDf of the waterproof structure along the optical axis and a compression amount ΔDw of the temperature drift compensation structure along the optical axis satisfy the conditional formula: 2ΔDf<ΔDw<5ΔDf.

7. The optical imaging system according to claim 6, wherein the temperature drift compensation structure is compressed along the optical axis at room temperature and assembled in the optical imaging system, and the compression amount ΔDw of the temperature drift compensation structure along the optical axis satisfies the conditional formula: 0.1Dw<ΔDw<0.9Dw; in, Dw represents the length of the temperature drift compensation structure along the optical axis at room temperature and without any force.

8. The optical imaging system according to claim 6, wherein the waterproof structure is compressed along the optical axis at room temperature and assembled in the optical imaging system, and the compression amount ΔDf of the waterproof structure along the optical axis satisfies the conditional formula: 0.1Df<ΔDf<0.9Df; in, Df represents the length of the waterproof structure along the optical axis at room temperature and without any force.

9. The optical imaging system according to any one of claims 1 to 5, wherein the waterproof structure and the temperature drift compensation structure are both annular structures, and the annular structure includes one or more of the following cross-sections: circular, elliptical, rectangular, and trapezoidal.

10. The optical imaging system according to any one of claims 1 to 5, wherein part or all of the optical imaging system is made of a thermally conductive material.

11. The optical imaging system according to any one of claims 2 to 5, wherein one or more of the lens barrel, the front ring, the first optical assembly, and the second optical assembly is provided with a groove for mounting and positioning the waterproof structure and / or the temperature drift compensation structure.

12. The optical imaging system according to any one of claims 1 to 5, further comprising: The image sensor is arranged on the image side of the second optical component and is used to acquire a digital image.

13. A method for assembling an optical imaging system, comprising: At room temperature, the temperature drift compensation structure is compressed along the optical axis according to preset conditions and assembled in the optical imaging system according to any one of claims 1 to 12.

14. The assembly method according to claim 13, comprising: At room temperature, the waterproof structure is compressed along the optical axis according to preset conditions and assembled into the optical imaging system according to any one of claims 1 to 12.

15. An optical design compensation method, comprising: performing optical design compensation on an imaging position of an optical imaging system according to any one of claims 1 to 12, based on the installation position of a temperature drift compensation structure in the optical imaging system, the amount of compression along the optical axis at room temperature, and the current ambient temperature.

Images