Imaging component and camera device

Abstract

The present invention discloses an imaging assembly and a camera device, wherein the imaging assembly comprises: a lens barrel, wherein the lens barrel comprises a heat-conducting shell and a conductive heating element, wherein the heat-conducting shell is formed into a cylindrical shape with openings at both ends, wherein one end of the conductive heating element is embedded in the barrel wall of the heat-conducting shell, and the other end is exposed to the outer surface of the barrel wall of the heat-conducting shell; and a lens, wherein the lens is fixed to the first end of the heat-conducting shell, wherein the lens comprises a light-transmitting area located in the central area and a connection area surrounding the periphery of the light-transmitting area and connected to the heat-conducting shell; the heat-conducting shell generates heat in response to the current loaded on the other end of the conductive heating element, so as to form a heat-conducting path for heating the lens via the connection area, so as to control the temperature of the lens to have a temperature difference with the ambient temperature that is less than a first threshold value.

Description

Technical Field

[0001] The present invention relates to the technical field of camera devices, and in particular to an imaging component and a camera device. Background Art

[0002] When the freezer camera is opened, due to the large temperature difference between the outside environment and the environment inside the freezer, the hot air outside the box condenses into fog on the outer surface of the camera lens glass when it encounters cold air, affecting the image. In order to solve this problem, the commonly used solution is to heat the window glass. One solution is to wrap a PI heating film around the lens, and transfer the heat generated by the PI heating film to the glass through the heat conduction of the lens itself and the heat diffusion between the contact surfaces. Since there is a gap between the heating film and the lens, external water vapor will enter the body through the gap, making it difficult to design the whole machine waterproof; the heating film is attached to the lens with adhesive, and when the adhesive fails or is not attached in place, the heating effect will be greatly affected; and the conventional plastic lens has poor thermal conductivity, and after adding heating to the front end of the lens, the temperature gradient in the height direction of the lens is large, showing a temperature distribution of hot front and cold back. When the moisture content in the lens cavity is high, the temperature difference between the front and back may cause water vapor to condense at a relatively low temperature in the lens cavity, causing fogging when powered on, affecting the image effect. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide an imaging component and a camera device, which do not adjust the structure and fixing method of the lens, but change the heating object and heat conduction path of the heating element, so as to achieve good defog function and sealing effect of the lens.

[0004] One embodiment of the present invention provides an imaging assembly, comprising:

[0005] A lens barrel, the lens barrel comprising a heat-conducting shell and a conductive heating element, the heat-conducting shell is formed into a cylindrical shape with openings at both ends, one end of the conductive heating element is embedded in the barrel wall of the heat-conducting shell, and the other end is exposed to the outer surface of the barrel wall of the heat-conducting shell; and

[0006] A lens, the lens being fixed to the first end of the heat-conducting housing, the lens comprising a light-transmitting area located in a central area and a connection area surrounding a periphery of the light-transmitting area for connecting with the heat-conducting housing;

[0007] The heat-conductive housing generates heat in response to the current loaded on the other end of the conductive heating element to form a heat-conductive path for heating the lens through the connecting area, so as to control the temperature of the light-transmitting area to have a temperature difference with the ambient temperature less than a first threshold.

[0008] In one embodiment, the first end of the heat-conducting housing has a step portion that is recessed inward, the lens is mounted on the step portion, and the connection area of ​​the lens is in contact with the step portion;

[0009] The inner diameter of the step portion is greater than or equal to the diameter of the light-transmitting area.

[0010] In one embodiment, the diameter of the lens is smaller than the inner diameter of the heat-conducting housing.

[0011] The peripheral outer edge of the connection area of ​​the lens is fixedly connected to the inner wall of the heat-conducting housing by an adhesive.

[0012] In one embodiment, the conductive heating element comprises a pair of electrode sheets spaced apart along the axial direction of the heat-conductive housing, and the lens is located between the pair of electrode sheets in the axial direction of the heat-conductive housing.

[0013] In one embodiment, it further comprises: a lens mount, the second end of the heat-conducting housing is mounted on the lens mount;

[0014] The thermal conductivity of the lens is greater than the thermal conductivity of the lens mount.

[0015] In one embodiment, further comprising:

[0016] A heat insulating portion is isolated between the second end of the heat-conducting housing and the lens mount.

[0017] In one embodiment, the heating power of the conductive heating element is associated with a width ratio coefficient between the connection area and the lens, and is proportional to the width ratio coefficient.

[0018] In one embodiment, the diffusion thermal resistance of the lens is associated with a width ratio coefficient between the connection area and the lens, and is inversely proportional to the width ratio coefficient; and / or

[0019] The diffusion thermal resistance of the lens is associated with the thickness and radius of the lens, and is inversely proportional to both the thickness and radius.

[0020] In one embodiment, the width ratio coefficient is greater than or equal to 0.2.

[0021] Another embodiment of the present invention further provides a camera device, comprising the imaging component as described above.

[0022] It can be seen from the above technical solution that the imaging component of this embodiment does not adjust the structure and fixing method of the lens, but changes the heating object and heat conduction path of the heating element, which will not affect the sealing structure of the entire imaging component. Therefore, the defog function can be achieved by heating the lens, and no additional spacing structure such as a heating element is set between the lens and the heat-conducting shell, so the sealing structure of the imaging component will not be destroyed, and the sealing function is well achieved.

[0023] The imaging assembly of this embodiment uses the heat-conducting housing of the lens as a heating object. Specifically, the heat-conducting housing can be made of heat-conducting plastic, and the heat-conducting housing is heated as a whole by a conductive heating element embedded in the heat-conducting housing. The lens is connected and contacted with the heat-conducting housing through the connection area. Therefore, the connection area serves as a heat-conducting path between the lens and the heat-conducting housing, and the lens is heated through the heat-conducting housing.

[0024] In the imaging assembly of this embodiment, the heating power consumption requirement of the conductive heating element, the size of the lens barrel, the related size of the lens and the lens barrel, the material resistivity, etc. can be constrained to meet different application requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following drawings are only used to schematically illustrate and explain the present invention, and do not limit the scope of the present invention.

[0026] Figure 1 It is a schematic structural diagram of the first embodiment of the imaging component of the present invention.

[0027] Figure 2 It is a regional distribution diagram of the lens in the present invention.

[0028] Figure 3 It is a schematic structural diagram of the second embodiment of the imaging component of the present invention.

[0029] Figure 4 Schematic diagram of an exploded view of a second embodiment of an imaging assembly of the present invention.

[0030] Figure 5 It is a schematic diagram of dimension marking of the second embodiment of the imaging assembly of the present invention.

[0031] Figure 6 The figure is a proportional relationship diagram between the thermal resistance of the lens in the imaging assembly of the present invention and the width of the connection area.

[0032] Figure 7 4 is a proportional relationship diagram between the thermal resistance of the lens in the imaging assembly of the present invention and the width proportionality coefficient g. DETAILED DESCRIPTION

[0033] In order to have a clearer understanding of the technical features, purposes and effects of the invention, the specific embodiments of the invention are now described with reference to the accompanying drawings, in which the same reference numerals represent the same parts.

[0034] In this document, “exemplary” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “exemplary” should not be interpreted as a more preferred or more advantageous technical solution.

[0035] In order to simplify the drawings, only the parts related to the present invention are schematically shown in each figure, and do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked.

[0036] In order to solve the problem of poor sealing effect caused by the defog structure of the imaging component in the prior art, the purpose of the present invention is to provide an imaging component and a camera device, which do not adjust the structure and fixing method of the lens, but change the heating object and heat conduction path of the heating element, so as to achieve good defog function and sealing effect of the lens.

[0037] Figure 1 It is a schematic structural diagram of the imaging component of the present invention. Figure 2 is the regional distribution diagram of the lens in the present invention. Figure 1 and Figure 2 As shown, one embodiment of the present invention provides an imaging assembly, comprising:

[0038] The lens barrel 10 includes a heat-conducting housing 11 and a conductive heating element 12. The heat-conducting housing 11 is formed into a cylindrical shape with openings at both ends. One end of the conductive heating element 12 is embedded in the cylinder wall of the heat-conducting housing 11, and the other end is exposed to the outer surface of the cylinder wall of the heat-conducting housing 11; and

[0039] The lens 20 is fixed to the first end of the heat-conducting housing 11, and the lens 20 includes a light-transmitting area 21 located in the central area and a connection area 22 surrounding the periphery of the light-transmitting area 21 and connected to the heat-conducting housing 11;

[0040] The heat-conductive housing 11 generates heat in response to the current loaded on the other end of the conductive heating element 12 to form a heat-conductive path for heating the lens 20 via the connecting area 22 to control the temperature of the light-transmitting area 21 to be less than a first threshold value from the ambient temperature.

[0041] Most existing imaging components with defog functions directly heat the lens through a heating element. However, no matter how it is set up, the presence of the heating element will affect the light-transmitting area of ​​the lens. Therefore, the lens structure or the heating structure needs to be modified accordingly, resulting in an increase in the modification cost.

[0042] The imaging assembly of this embodiment uses the heat-conducting housing 11 of the lens 10 as a heating object. Specifically, the heat-conducting housing 11 can be made of heat-conducting plastic, and the heat-conducting housing 11 is heated as a whole by the conductive heating element 12 embedded in the heat-conducting housing 11. The lens 20 in this embodiment can be fixed to the heat-conducting housing 11 in a similar manner to the lens in the existing imaging assembly, that is, fixed by a fixing groove or bonding.

[0043] Usually, the lens is connected and fixed to the housing through its edge portion, which does not affect the light passing area in the center of the lens. Figure 2 As shown, the lens 20 of this embodiment also includes a light-transmitting area 21 located at the center of the lens 20 and a connection area 22 surrounding the periphery of the light-transmitting area 21 and connected to the heat-conducting housing 11. Of course, the light-transmitting area 21 and the connection area 22 are just definitions of different positions on the surface of the lens 20, rather than limiting the lens 20 to a structure formed by connecting two different parts. Figure 2 As shown, the light-transmitting area 21 is located at the center of the lens 20, and it can occupy most of the area of ​​the lens 20 to allow light to pass through. The annular area located at the edge of the lens 20 can be used as the connecting area 22, which is located at the edge of the lens 20 and can only occupy a small part of the area of ​​the lens 20, which will not affect the passage of light and can also achieve a stable connection with the heat-conducting housing 11.

[0044] The lens 20 is connected and in contact with the heat-conducting housing 11 via the connection area 22 . Therefore, the connection area 22 serves as a heat-conducting path between the lens 20 and the heat-conducting housing 11 , thereby heating the lens 20 via the heat-conducting housing 11 .

[0045] In the imaging assembly of the present embodiment, the structure and fixing method of the lens 20 are not adjusted, but the heating object and heat conduction path of the heating element are changed, which will not affect the sealing structure of the entire imaging assembly. Therefore, not only can the defog function be achieved by heating the lens, but also no additional spacing structure such as a heating element is provided between the lens and the heat-conducting shell, which will not damage the sealing structure of the imaging assembly, thereby achieving a good sealing function.

[0046] In a low-temperature use environment, when the ambient temperature suddenly rises, fogging is likely to occur on the outer surface of the lens. Heating the temperature of the lens 20 can prevent the generation of fog. The control target of the temperature of the lens 20 is to control the temperature of the light-transmitting area 21 to a temperature difference with the ambient temperature that is less than a first threshold. For example, the first threshold may be 0.

[0047] Specifically, for example, the lowest temperature in the freezer is T Low , the maximum temperature of the freezer environment THigh In order to meet the anti-fogging requirements of the lens 20, according to the relative humidity of 100% in the outdoor extreme high humidity environment, it is necessary to ensure that the temperature T at the center of the lens 20 Center Not lower than the maximum temperature T of the freezer environment High , that is, the temperature rise requirement (ΔT) at the center of the lens 20 is not less than T High -T Low (If the relative humidity of the outdoor environment is lower, the dew point can be calculated accordingly to confirm the temperature rise requirement). Low =-20℃, outdoor ambient temperature T High =30℃ is used for calculation and explanation. The temperature rise of the center of the glass is ΔT, which is 50℃, Tcenter=30℃. There is forced convection in the cabinet. The forced convection heat transfer coefficient is h=30W / m 2 *K is used for calculation and explanation. The heat flux Q1=h×A required when the temperature of the lens 20 is stable p ×ΔT=30*50*A p , where A p is the area of ​​the lens 20,

[0048] in,

[0049] A p =π*a 2 , a is the radius of the lens 20. Formula (2)

[0050] Generally, the shape of the lens 20 is circular, and the shape of the connecting area 22 is annular. The width ratio coefficient g of the connecting area 22 and the lens 20 can be determined as the ratio of the ring width of the connecting area 22 to the radius of the lens 20. Correspondingly, the area A of the connecting area 22 is s Can be determined as:

[0051] A s =π*a 2 *(2*gg 2 ). Formula (1)

[0052] Combination Figure 1 As shown, the first end of the heat-conducting housing 11 has an inwardly recessed step portion 111, the lens 20 is mounted on the step portion 111, and the connecting area 22 of the lens 20 is in contact with the step portion 111; the inner diameter of the step portion 111 is greater than or equal to the diameter of the light-transmitting area 21.

[0053] In a preferred embodiment, the diameter of the lens 20 is smaller than the inner diameter of the heat-conducting housing 11 , and the circumferential outer edge of the connection region 22 of the lens 20 is fixedly connected to the inner wall of the heat-conducting housing 11 by an adhesive.

[0054] As can be seen from the above technical solution, the lens 20 can be bonded to the step portion 111 through the inner surface of the connection area 22 (i.e., the side surface facing the inside of the heat-conducting shell 11), then the area of ​​the lens 20 that overlaps with the step portion 111 can be regarded as the connection area 22, and the area of ​​the lens 20 that corresponds to the hollow cavity of the heat-conducting shell 11 can be called the light-transmitting area 21. The inner surface of the connection area 22 and the step portion 111 can be connected only by bonding to avoid other structures causing a gap between the connection area 22 and the step portion 111. Optionally, the connection area 22 can be firmly connected to the step portion 111 through the circumferential outer edge of the lens 20. For example, if the diameter of the lens 20 is smaller than the inner diameter of the heat-conducting shell 11, there is a gap between the outer edge 20a (circumferential outer edge) of the lens 20 in the radial direction and the inner wall of the heat-conducting shell 11. The gap can be filled and connected by glue dispensing or other methods, and the adhesive can seal the inside of the heat-conducting housing 11 from the circumferential outer edge of the lens 20, and the dust, moisture, etc. outside the heat-conducting housing 11 need to pass through the gap between the circumferential outer edge of the lens 20 and the inner wall of the heat-conducting housing 11, and the gap between the inner surface of the connection area 22 and the step portion 111 in turn to enter the inside of the heat-conducting housing 11. This fixing method of the lens 20 can seal from the entrance of the gap, so even if the glue dispensing fails to fall off, the lens 20 can still achieve sealing by relying on the fit between the inner surface of the connection area 22 and the step portion 111.

[0055] like Figure 1 As shown, the conductive heating element 12 includes a pair of electrode sheets 12 a and 12 b spaced apart along the axial direction of the heat-conducting housing 11 , and the lens 20 is located between the pair of electrode sheets 12 a and 12 b in the axial direction of the heat-conducting housing 11 .

[0056] The electrode sheets 12a and 12b can be connected to the positive and negative electrodes of the applied voltage respectively, so as to form a closed loop based on the heat-conducting housing 11 to achieve a good discharge heating function. Among them, the lens 20 should be located between the electrode sheets 12a and 12b so that the lens 20 can be located in the main heat dissipation path of the heating element 12, thereby ensuring the heating efficiency of the lens 20.

[0057] Figure 3 Schematic diagram of the structure of the second embodiment of the imaging assembly of the present invention. Figure 3 As shown, the imaging assembly of this embodiment includes:

[0058] The lens barrel 10 includes a heat-conducting housing 11 and a conductive heating element 12. The heat-conducting housing 11 is formed into a cylindrical shape with openings at both ends. One end of the conductive heating element 12 is embedded in the cylinder wall of the heat-conducting housing 11, and the other end is exposed to the outer surface of the cylinder wall of the heat-conducting housing 11.

[0059] A lens 20, the lens 20 is fixed to the first end of the heat-conducting housing 11, and the lens 20 includes a light-transmitting area 21 located in the central area and a connection area 22 surrounding the periphery of the light-transmitting area 21 and connected to the heat-conducting housing 11; and

[0060] A lens mount 30, the second end of the heat-conducting housing 11 is mounted on the lens mount 30;

[0061] Among them, the thermal conductivity of the lens 20 is greater than the thermal conductivity of the lens holder 30, and the heat-conductive housing 11 generates heat in response to the current loaded at the other end of the conductive heating element 12 to form a heat-conductive path for heating the lens 20 via the connecting area 22, so as to control the temperature of the light-transmitting area 21 to a temperature difference with the ambient temperature that is less than a first threshold.

[0062] The lens 20 and the lens holder 30 are respectively mounted at both ends of the heat-conducting housing 11, wherein the thermal conductivity of the lens 20 is greater than that of the lens holder 30, so that the lens 20 serves as the main direction of heat dissipation, and the heat dissipation direction of the heat-conducting housing 11 is toward the side where the lens 20 is mounted.

[0063] Optionally, a heat insulating portion 40 may be further included between the second end of the heat-conducting housing 11 and the lens mount 30 to ensure that the heat dissipation direction of the heat-conducting housing 11 is toward the side where the lens 20 is installed.

[0064] Furthermore, in the imaging assembly of this embodiment, the heating power consumption requirement of the conductive heating element 12, the size of the lens barrel 10, the related sizes of the lens 20 and the lens barrel 10, the material resistivity, etc. can be constrained to meet different application requirements.

[0065] Specifically, for example, the lowest temperature in the freezer is T Low , the maximum temperature of the freezer environment T High In order to meet the anti-fogging requirements of the lens 20, according to the relative humidity of 100% in the outdoor extreme high humidity environment, it is necessary to ensure that the temperature T at the center of the lens 20 Center Not lower than the maximum temperature T of the freezer environment High , that is, the temperature rise requirement (ΔT) at the center of the lens 20 is not less than T High -T Low (If the relative humidity of the outdoor environment is lower, the dew point can be calculated accordingly to confirm the temperature rise requirement). Low =-20℃, outdoor ambient temperature T High =30℃ is used for calculation and explanation. The temperature rise of the center of the glass is ΔT, which is 50℃, Tcenter=30℃. There is forced convection in the cabinet. The forced convection heat transfer coefficient is h=30W / m 2 *K is used for calculation and explanation. The heat flux Q1=h×A required when the temperature of the lens 20 is stable p×ΔT=30*50*A p , where A p is the area of ​​the lens 20, A p =π*a 2 , a is the radius of the lens 20.

[0066] The heat lost by the lens 20 to the air in the refrigerator through forced convection is Q2 = h*A p *ΔT, Q2 is positively correlated with the area of ​​the lens 20. For example, a lens 20 with a radius of a and a thickness of H is used as an example. The width of the connecting area 22 (the part overlapping the lens barrel) of the lens 20 is g*a. The area A of the lens 20 and the heat-conducting housing 11 is s =π×(2g-g 2 )×a 2 There is a gap between the lens 20 and the heat-conducting shell 11 in the radial direction, and they are not directly bonded. The heat flow is guided from the normal contact surface (connection area 22) between the heat-conducting shell 11 and the lens 20 to the lens 20, and then diffuses from the connection area 22 to the light-transmitting area 21. The total thermal resistance is composed of the following two parts: Ra = Rc (normal heat conduction thermal resistance) + Rsp (diffusion thermal resistance).

[0067] Among them, the normal thermal resistance is: In this formula, k is the thermal conductivity of the lens 20;

[0068] Thermal resistance: Where k is the thermal conductivity of the lens 20

[0069] Substituting formula (1) and formula (2) in the article into the above, we can get:

[0070]

[0071] According to formula (3) and formula (4), and the above determination of thermal resistance, formula (5) can be obtained, from which it is determined that the thermal resistance is related to the thermal conductivity k of the lens, the radius a of the lens, the thickness H of the lens, and the width of the connection area 22. Among them, taking the lens 20 with thermal conductivity k = 1W / m*K, radius a = 6mm, and conventional thickness H = 1.1mm as an example, as the width of the connection area 22 increases, the total thermal resistance decreases, that is, the diffusion thermal resistance R of the lens 20 sp is related to the width ratio coefficient g of the connection area 22 and the lens 20 and is inversely proportional to the width ratio coefficient g. Also, the diffusion thermal resistance R of the lens 20 sp It is associated with the thickness H and the radius a of the lens 20 , and is inversely proportional to both the thickness H and the radius a.

[0072] For the lens with k=1, g≥0.2 is determined. At the same time, due to the limitations of structural installation, field of view, etc., the proportional coefficient g is taken as 0.2, that is, the width of the connecting area 22 is 1.2 mm, and the total thermal resistance Ra=42.9 K / W.

[0073] Furthermore, the thermal conductivity temperature difference = the amount of heat Q1*the thermal conductivity resistance Ra, and the temperature of the lens T = Tcenter+Q1*Ra=37.3° C. When the thermal conductivity temperature difference is determined, the amount of heat (i.e., the heating power loaded on the conductive heating element 12) is associated with the width proportionality coefficient g of the connection area 22 and the lens 20, and is proportional to the width proportionality coefficient g.

[0074] For module products (imaging components + motherboard 50), the imaging components are exposed to the cabinet environment and forced to dissipate heat through convection with the air in the cabinet: the heat dissipation outside the lens Q' = h × A × ΔT = 30 × A × (37.3-(-20)) = 57.3A, then for an imaging component with a diameter R1 of 14mm and a height L of 15mm, Q' = 1.13W. Theoretically calculated heat generation of the imaging component P = heat dissipation of the imaging component Q' + heat dissipation of the lens 20 Q = 1.3W, according to the 85% design margin, the lens heating requirement P = 1.53W.

[0075] According to P=U 2 / R, calculated according to the corresponding 5V power supply voltage, resistance R = 16.3Ω, resistance ρ is the resistivity, l is the length between the electrode sheets 12a and 12b, 12 mm, and S is the cross-sectional area of ​​the heat-conducting housing 11, 41 mm 2 The resistivity of the heat-conducting housing 11 is ρ=5.6Ω*cm. Corresponding to different power supply voltages or lens sizes, the resistivity of the selected material needs to be adjusted accordingly.

[0076] It can be determined that the heating power of the conductive heating element 12 is related to the lens size, material resistivity, etc.

[0077] Another embodiment of the present invention also provides a camera device, which uses Figures 1 to 4 The imaging component shown in any of the figures is used to provide shooting with a defog function.

[0078] It can be seen from the above technical solution that the imaging component of this embodiment does not adjust the structure and fixing method of the lens, but changes the heating object and heat conduction path of the heating element, which will not affect the sealing structure of the entire imaging component. Therefore, the defog function can be achieved by heating the lens, and no additional spacing structure such as a heating element is set between the lens and the heat-conducting shell, so the sealing structure of the imaging component will not be destroyed, and the sealing function is well achieved.

[0079] The imaging assembly of this embodiment uses the heat-conducting housing of the lens as a heating object. Specifically, the heat-conducting housing can be made of heat-conducting plastic, and the heat-conducting housing is heated as a whole by a conductive heating element embedded in the heat-conducting housing. The lens is connected and contacted with the heat-conducting housing through the connection area. Therefore, the connection area serves as a heat-conducting path between the lens and the heat-conducting housing, and the lens is heated through the heat-conducting housing.

[0080] In the imaging assembly of this embodiment, the heating power consumption requirement of the conductive heating element, the size of the lens barrel, the related size of the lens and the lens barrel, the material resistivity, etc. can be constrained to meet different application requirements.

[0081] Herein, “a” or “an” does not mean limiting the number of the relevant parts of the present invention to “only one”, and “a” or “an” does not mean excluding the situation where the number of the relevant parts of the present invention is “more than one”.

[0082] Unless otherwise stated, the numerical ranges herein include not only the entire range within its two endpoints but also include several sub-ranges contained therein.

[0083] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention, and are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention, such as combination, division or repetition of features, should be included in the scope of protection of the present invention.

Claims

1. An imaging component, characterized in that: include: A lens barrel (10), the lens barrel (10) comprising a heat-conducting shell (11) and a conductive heating element (12), the heat-conducting shell (11) being formed into a cylindrical shape with openings at both ends, one end of the conductive heating element (12) being embedded in the cylinder wall of the heat-conducting shell (11), and the other end being exposed to the outer surface of the cylinder wall of the heat-conducting shell (11); and A lens (20), the lens (20) being fixed to a first end of the heat-conducting housing (11), the lens (20) comprising a light-transmitting area (21) located in a central area and a connection area (22) surrounding the periphery of the light-transmitting area (21) and connected to the heat-conducting housing (11); The conductive heating element (12) comprises a pair of electrode sheets (12a, 12b) arranged at intervals along the axial direction of the heat-conducting housing (11), and the lens (20) is located between the pair of electrode sheets (12a, 12b) in the axial direction of the heat-conducting housing (11); A lens seat (30), the second end of the heat-conducting housing (11) being mounted on the lens seat (30), the thermal conductivity of the lens (20) being greater than the thermal conductivity of the lens seat (30), and the lens seat (30) being located outside the pair of electrode sheets (12a, 12b); a heat insulating portion (40), the heat insulating portion (40) is isolated between the second end of the heat conductive housing (11) and the lens holder (30); the conductive heating element (12) causes the heat conductive housing (11) to heat up as a whole, and the heat conductive housing (11) generates heat in response to the current loaded on the other end of the conductive heating element (12), so as to form a heat conductive path for heating the lens (20) via the connecting area (22), so as to control the temperature of the light-transmitting area (21) to have a temperature difference with the ambient temperature less than a first threshold value; The first end of the heat-conducting housing (11) has an inwardly recessed step portion (111), the lens (20) is mounted on the step portion (111), and the connection area (22) of the lens (20) is in contact with the step portion (111); The inner diameter of the step portion (111) is greater than or equal to the diameter of the light-transmitting area (21); The diameter of the lens (20) is smaller than the inner diameter of the heat-conducting housing (11).

2. The imaging assembly according to claim 1, characterized in that: The heating power of the conductive heating element (12) is associated with a width ratio coefficient (g) between the connection area (22) and the lens (20), and is proportional to the width ratio coefficient (g).

3. The imaging assembly according to claim 1, characterized in that: The diffusion thermal resistance (Rsp) of the lens (20) is associated with a width proportionality coefficient (g) between the connection area (22) and the lens (20), and is inversely proportional to the width proportionality coefficient (g); and / or The diffusion thermal resistance (Rsp) of the lens (20) is associated with the thickness (H) and the radius (a) of the lens (20), and is inversely proportional to both the thickness (H) and the radius (a).

4. The imaging assembly according to claim 2 or 3, characterized in that: The width proportionality coefficient (g) is greater than or equal to 0.

2.

5. An imaging assembly, characterized in that: include: A lens barrel (10), the lens barrel (10) comprising a heat-conducting shell (11) and a conductive heating element (12), the heat-conducting shell (11) being formed into a cylindrical shape with openings at both ends, one end of the conductive heating element (12) being embedded in the cylinder wall of the heat-conducting shell (11), and the other end being exposed to the outer surface of the cylinder wall of the heat-conducting shell (11); and A lens (20), the lens (20) being fixed to a first end of the heat-conducting housing (11), the lens (20) comprising a light-transmitting area (21) located in a central area and a connection area (22) surrounding the periphery of the light-transmitting area (21) and connected to the heat-conducting housing (11); The heat-conducting housing (11) generates heat in response to the current loaded on the other end of the conductive heating element (12), so as to form a heat-conducting path for heating the lens (20) via the connecting area (22), so as to control the temperature of the light-transmitting area (21) to have a temperature difference with the ambient temperature less than a first threshold value; The conductive heating element (12) comprises a pair of electrode sheets (12a, 12b) arranged at intervals along the axial direction of the heat-conducting housing (11), and the lens (20) is located between the pair of electrode sheets (12a, 12b) in the axial direction of the heat-conducting housing (11); The diffusion thermal resistance (R sp ) is associated with the thickness (H) and radius (a) of the lens (20), and is inversely proportional to both the thickness (H) and radius (a), and includes: Wherein g is the ratio coefficient of the width of the connection area (22) and the lens (20), and h is the forced convection heat transfer coefficient in the refrigerator.

6. A camera device, characterized in that: Comprising the imaging component according to any one of claims 1 to 4.

Images