CN112198744A

CN112198744A - Optical device and application thereof

Info

Publication number: CN112198744A
Application number: CN201910699837.2A
Authority: CN
Inventors: 黄虎钧; 罗东; 叶裕庆
Original assignee: Ningbo Sunny Automotive Optech Co Ltd
Current assignee: Ningbo Sunny Automotive Optech Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2021-01-08
Anticipated expiration: 2039-07-31
Also published as: CN113917768A; CN112198744B; CN113917768B

Abstract

The invention provides an optical device and application thereof, the optical device comprises at least one lens, a lens cone, at least one heating element and at least two conductive elements, wherein the lens is mounted to the lens barrel, wherein the heating element is disposed at the lens, wherein the heating element has at least two terminals, wherein the at least two conductive elements are respectively fixed in a position to be in contact electrical connection with the corresponding terminals, wherein the electrically conductive member has an electrically conductive contact surface, wherein the electrically conductive contact surface is electrically connected to the terminal of the heating element in a surface contact manner, wherein the at least two conductive elements are used for connecting a power supply device so that the power supply device provides electric quantity to the heating element to heat the lens, and the problem of uneven heating of the heating element caused by connection of the heating element and the lead in a welding mode and the like is avoided.

Description

Optical device and application thereof

Technical Field

The present invention relates to the field of optics, and in particular, to an optical device and an application thereof.

Background

With the development of science and technology, optical devices such as vehicle-mounted lenses, optical lamp covers and the like are increasingly applied to daily life of people. For example, in order to provide comfort and safety for driving a car, the vehicular lens is widely used in the fields of front view, rear view, surround view, interior view, side view, and the like of the car. Meanwhile, with the continuous development of automobile technology, the number and performance of the vehicle-mounted lenses required on the automobile are greatly improved, and the requirement on the weather resistance of the vehicle-mounted lenses is more severe.

When a vehicle runs in a continuous rainy, icy or cold-hot alternate environment, the inner and outer surfaces of the near-object side lens of the vehicle-mounted lens are easily fogged or frosted, the optical performance of the vehicle-mounted lens is seriously affected, and the driving safety of people is harmed.

In order to ensure driving safety, the current common means is mainly to adopt a mode of arranging a heating element in the vehicle-mounted lens to heat and evaporate water attached to the surface of the lens or prevent fogging or frosting and the like. However, the heating element inside the existing vehicle-mounted lens is mainly connected by a wire in a tin soldering manner, and the area of the welding point of the heating element is large, so that when the heating element is electrified to heat the lens, the resistance at the position of the welding point is different from the resistance at other positions of the heating element, so that the heating element is not uniform in overall heating, the lens is not uniformly heated, and the optical performance of the vehicle-mounted lens is affected.

Generally, the heating element usually adopts a heating wire, and the line width of the wire is extremely small, so that the welding area between the wire and the heating wire is extremely small in the manufacturing process of the vehicle-mounted lens, the difficulty of welding between the wire and the heating wire is high, the yield is low, and the cost is relatively high.

Disclosure of Invention

One of the main advantages of the present invention is to provide an optical device and an application thereof, which can avoid the problem of uneven heating of a heating element caused by welding or the like between the heating element and a lead, so that the heating element can uniformly heat a lens of the optical device, i.e., accelerate the dissipation of water attached to the surface of the lens or prevent the surface of the lens from fogging or frosting, and ensure the optical performance of the optical device.

Another advantage of the present invention is to provide an optical device and its application, in which the wires are indirectly and electrically connected to the positive and negative terminals of the heating element at the outer side of the lens, so that the heating temperature of the heating element is uniformly distributed, or the heating temperature at the terminals of the heating element is uniformly maintained with the heating temperature at other positions, so that the lens is uniformly heated.

Another advantage of the present invention is to provide an optical device and an application thereof, which can achieve easy assembly, reduce the difficulty of connecting wire ends, and reduce the manufacturing cost.

Another advantage of the present invention is to provide an optical device and an application thereof, in which the area of the contact electrical connection between the heating element and the conductive element can be preset according to actual requirements, thereby avoiding a problem of a difficult welding between the wire and the heating wire due to a very small welding area, and improving a yield of products.

Another advantage of the present invention is to provide an optical device and an application thereof, which can ensure the stability of the circuit and prevent the heating efficiency of the heating element from being affected by the looseness generated when the optical device is heated or moved.

Another advantage of the present invention is to provide an optical device and its application that allows the positive and negative terminals of the heating element to be indirectly electrically connected to the conductive lines on the side or bottom wall of the lens, thereby providing a versatile manufacturing solution.

Another advantage of the present invention is to provide an optical device and its application, which can improve the heat generation efficiency and reduce the heat loss.

Another advantage of the present invention is to provide an optical device and an application thereof, which can realize the arrangement of wires of a plastic module by injecting conductive paste without additional assembly of wires, so that the assembly of the optical device is simple, the appearance is optimized, and the optical performance is not affected.

Another advantage of the present invention is to provide an optical device and an application thereof, which can realize multi-angle or multi-position access of a wire, have wide applicability, and reduce the manufacturing difficulty of the optical device.

Another advantage of the present invention is to provide an optical device and its application, which has simple structure, simple process and low cost.

Additional advantages and features of the invention will be set forth in the detailed description which follows and in part will be apparent from the description, or may be learned by practice of the invention as set forth hereinafter.

In accordance with one aspect of the present invention, the foregoing and other objects and advantages are achieved in an optical device comprising:

at least one lens;

a lens barrel, wherein the lens is mounted to the lens barrel;

at least one heating element; and

at least two conductive elements, wherein the heating element is disposed on the lens, wherein the heating element has at least two terminals, wherein the at least two conductive elements are respectively fixed at positions in contact and electrical connection with the corresponding terminals, wherein the conductive elements have a conductive contact surface, wherein the conductive contact surface is electrically connected to the terminals of the heating element in a surface contact manner, and wherein the at least two conductive elements are used for connecting a power supply device so that the power supply device provides power to the heating element to heat the lens.

In some embodiments wherein the area of the conductive contact surface is equal to or greater than the area of the terminal.

In some embodiments, the power supply device further comprises at least two wires, wherein the at least two wires are electrically connected with the corresponding conductive elements respectively, so that the conductive elements are connected to the power supply device through the wires.

In some embodiments, the conductive elements are adhesively secured in position for electrical connection with corresponding ones of the terminal contacts.

In some embodiments, the optical device further comprises a conductive adhesive, wherein the conductive contact surface of the conductive element is adhesively secured in place by the conductive adhesive in electrical contact with the terminal of the heating element.

In some embodiments, wherein the conductive glue is dispensed between the conductive contact surface of the conductive element and the lens and in electrical contact with the terminal of the heating element.

In some embodiments, the optical device further comprises at least one fixing element, wherein the conductive element is fixedly held by the fixing element in a position in contact electrical connection with the terminal of the heating element.

In some embodiments, the lens barrel has at least one fixing cavity and at least one wire passage, wherein the fixing cavity is located between the lens and a barrel wall of the lens barrel, wherein the conductive element is mounted in the fixing cavity and electrically contacts the terminal of the heating element, wherein the fixing element is mounted between the conductive element and the barrel wall and provides a force to keep the conductive element and the lens relatively fixed, and wherein the wire passage communicates with the fixing cavity and extends outward along the barrel wall, so that the wire extends outward from the conductive element along the wire passage.

In some embodiments, wherein the terminals of the heating element are disposed at a peripheral region of the inner surface of the lens, wherein the securing element provides a force to fixedly retain the conductive element at the peripheral region of the inner surface of the lens and in electrical contact with the terminals.

In some embodiments, wherein the terminal of the heating element is disposed on a side surface of the lens, wherein the securing element provides a force to secure the conductive element to the barrel wall, wherein the conductive element is extended to the side surface of the lens and is in electrical contact with the terminal.

In some embodiments, wherein the conductive element comprises a first conductive element and a second conductive element, wherein the securing element secures the first conductive element and the second conductive element to the barrel wall, wherein the first conductive element is extended to the side surface of the lens and is in electrical contact with the terminal.

In some embodiments, the first conductive element and the second conductive element are adhesively connected by a conductive adhesive.

In some embodiments, wherein the first conductive element and the second conductive element are implemented as the same or different conductive materials.

In some embodiments, wherein the fixation element is implemented as an elastic element.

In some embodiments, the optical device further comprises a thermal shield, wherein the thermal shield is disposed on the lens in a manner that reduces heat dissipation from the heating element.

In some embodiments, wherein the thermal insulator is mounted between the lens and a barrel wall of the lens barrel and provides a force to keep the conductive element and the lens relatively fixed, wherein the thermal insulator insulates and insulates.

In some embodiments, the fixing element is disposed between the conductive element and the thermal insulator in a manner to enhance the coupling effect.

In some embodiments, wherein the contact surface between the conductive element and the terminal of the heating element is predetermined according to the shape and position of the terminal of the heating element.

In some embodiments, wherein the conductive elements are implemented as dot-like structures.

In some embodiments, two of said terminals are located on opposite sides of said lens, wherein one of said conductive elements is fixedly held in electrical contact with one of said terminals and wherein the other of said conductive elements is fixedly held in electrical contact with the other of said terminals.

In some embodiments, wherein the two terminals are on the same side of the lens and do not contact each other, one of the conductive elements is fixedly held in electrical contact with one of the terminals, and the other of the conductive elements is fixedly held in electrical contact with the other of the terminals, wherein the two conductive elements do not contact each other.

In some embodiments, both of the conductive elements are implemented as arc-shaped structures and do not contact each other, wherein one of the conductive elements extends along one side of the lens periphery and is in electrical contact with one of the terminals of the heating element, and wherein the other conductive element extends along the other side of the lens periphery and is in electrical contact with the other of the terminals of the heating element.

In some embodiments, one of the conductive elements is implemented as a point-like structure and the other conductive element is implemented as an arc-shaped structure.

In some embodiments, each of the terminals of the heating element is reserved for electrical contact connection with the corresponding conductive element, wherein the remainder of the heating element is insulated.

In some embodiments, the lens barrel has a barrel wall, wherein the barrel wall is made of an electrically non-conductive material, wherein the barrel wall has at least two conductive wire channels that are not communicated with each other, wherein the at least two conductive wire channels are respectively extended to the terminals of the corresponding heating element, and wherein the at least two conductive elements are cured and formed by respectively injecting conductive paste into the at least two conductive wire channels, so that the at least two conductive elements are respectively electrically connected with the corresponding terminals.

In some embodiments, wherein the terminal of the heating element is located at a side surface of the lens, wherein the wire channel is extended to a side surface of the lens, wherein the conductive contact surface of the conductive element is electrically connected to the terminal at the location of the side surface of the lens.

In some embodiments, wherein the terminals of the heating element are located at a peripheral region of the inner surface of the lens, wherein the wire channels are extended to the peripheral region of the inner surface of the lens, wherein the electrically conductive contact surface is electrically connected to the terminals at the location of the peripheral region of the inner surface of the lens.

According to another aspect of the present invention, the present invention further provides a method for manufacturing an optical device, comprising the steps of:

A. arranging at least one heating element on at least one lens, wherein the heating element is provided with two terminals;

B. mounting the lens on a lens barrel; and

C. fixedly holding at least two conductive elements in respective electrical contact positions with the terminals of the heating elements, wherein the conductive elements have a conductive contact surface, wherein the conductive contact surface is electrically connected to the terminals of the heating elements in a surface contact manner, wherein the at least two conductive elements are used for connecting a power supply device so that the power supply device supplies power to the heating elements to heat the lenses, wherein step A and step B can be interchanged.

In some embodiments, in step C, the conductive element is fixed in place in electrical contact with the terminal of the heating element by a conductive adhesive.

In some embodiments, wherein step C, the conductive element is held in place in electrical contact with the terminals by at least one securing element.

In some embodiments, wherein in step C, the terminals of the heating element are disposed at a peripheral region of the inner surface of the lens, wherein the securing element provides a force to fixedly retain the conductive element at the peripheral region of the inner surface of the lens and in electrical contact with the terminals.

In some embodiments, wherein in step C, the terminal of the heating element is disposed on a side surface of the lens, wherein the fixing element provides a force to fix the conductive element to a barrel wall of the lens barrel, wherein the conductive element is extended to the side surface of the lens and is in electrical contact with the terminal.

In some embodiments, wherein the step C, further comprises the steps of: and fixing the conductive element in the position of electrical contact with the terminal of the heating element by a conductive adhesive.

In some embodiments, further comprising a step of: a thermal insulator is disposed on the lens to reduce heat dissipation of the heating element.

In some embodiments, in the step C, the lens barrel has a barrel wall, wherein the barrel wall is made of an electrically non-conductive material, wherein the barrel wall has at least two conductive wire channels that are not communicated with each other, and wherein the at least two conductive elements are respectively formed by curing by injecting conductive paste into the at least two conductive wire channels.

Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the claims.

Drawings

FIG. 1 is a schematic cross-sectional view of an optical device according to a preferred embodiment of the present invention.

Fig. 2 is a schematic structural view of the optical device according to the above preferred embodiment of the present invention in which the heating element is disposed on the lens and the conductive element.

Fig. 3 is a schematic structural view of the contact connection between the conductive contact surface of the conductive element of the optical device and the terminal of the heating element according to the above preferred embodiment of the present invention.

Fig. 4A is an enlarged schematic view of an a region of the optical device according to the above preferred embodiment of the present invention.

Fig. 4B is an enlarged schematic view of an a-region of the optical device according to the above preferred embodiment of the present invention using both conductive paste and fixing member.

Fig. 4C is an enlarged schematic view of region a of the first variant embodiment of the optical device according to the above preferred embodiment of the present invention.

Fig. 4D is an enlarged schematic view of the a region using a conductive paste of the first variation of the optical device according to the above preferred embodiment of the present invention.

Fig. 5A is a schematic cross-sectional view of a heat insulator according to a second variation of the optical apparatus according to the above preferred embodiment of the present invention.

Fig. 5B is a schematic cross-sectional view of a fixing member and a heat insulator according to a second variation of the optical apparatus according to the above preferred embodiment of the present invention.

Fig. 5C is a schematic sectional view in which a heat insulator according to a second variation of the optical apparatus according to the above preferred embodiment of the present invention is implemented in a cylindrical structure.

Fig. 5D is a structural view illustrating that the heat insulator of the second variation of the optical apparatus according to the above preferred embodiment of the present invention is implemented in a ring structure.

Fig. 6A is a schematic partial cross-sectional view of a third variant implementation of the optical device according to the above preferred embodiment of the invention.

Fig. 6B is a schematic cross-sectional view of the conductive element of the third variant embodiment of the optical device according to the above preferred embodiment of the present invention.

Fig. 7 is a schematic sectional view of the lead wire of the optical device according to the above preferred embodiment of the present invention drawn out from the side wall of the lens barrel.

Fig. 8A is a schematic plan view of two conductive elements of the dot-shaped structure of the optical device according to the above preferred embodiment of the present invention symmetrically located on two sides of the lens.

Fig. 8B is a schematic plan view of the point-like structure of the optical device according to the above preferred embodiment of the present invention, wherein two conductive elements are located on the same side of the lens.

Fig. 8C is a schematic plan view of two conductive elements of equal arc configuration of the optical device according to the above preferred embodiment of the present invention on both sides of the lens.

Fig. 8D is a schematic plan view of two conductive elements of the optical device according to the above preferred embodiment of the present invention, which are located on both sides of the lens, and have arc-shaped structures with different arc lengths.

Fig. 9 is a schematic cross-sectional view of an optical device according to a first variant embodiment of the invention.

Fig. 10 is a schematic cross-sectional view of another implementation of the optical device according to the first variant example of the invention described above.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Fig. 1 to 8D show an optical device 100 according to a preferred embodiment of the present invention, wherein the optical device 100 is an on-board lens, an optical lampshade, etc., and the optical device 100 has the functions of actively removing fog and frost and preventing fog. That is, when the optical device 100 is in a continuous rainy, icy or alternating hot and cold environment, the optical device 100 can actively defrost and defog to ensure reliability of optical performance.

As shown in fig. 1, fig. 2 and fig. 3, preferably, the optical device 100 includes at least one lens 10, a lens barrel 20, at least one heating element 30 and at least two conductive elements 40, wherein the lens 10 is mounted on the lens barrel 20, wherein the heating element 30 is disposed on the lens 10, wherein the heating element 30 has at least two terminals 31 (including a positive terminal and a negative terminal), and wherein the at least two conductive elements 40 are respectively fixed at positions where the corresponding at least two terminals 31 are electrically connected. The at least two conductive elements 40 each have a wire connecting end 41, wherein the wire connecting end 41 of the at least two conductive elements 40 is used for connecting a power supply device through at least two wires 50, so that the power supplied by the power supply device is conducted to the heating element 30 through the conductive element 40 via the wires 50, wherein the heating element 30 can convert the electric energy into heat energy and heat the lens 10 to accelerate dissipation of moisture attached to the surface of the lens 10, thereby achieving defogging or defrosting and preventing fogging effects.

Alternatively, the optical device 100 may be implemented as an optical protection cover, wherein the optical protection cover has a light-transmitting cover, wherein the light-transmitting cover may be made of a plastic material, a glass material, a crystal material, or the like, and wherein the heating element 30 is disposed on the light-transmitting cover to accelerate dispersion of moisture, fog, frost, or the like attached to an inner surface or an outer surface of the light-transmitting cover, to have an active defogging and defrosting function, or to prevent formation of fog, frost, or the like on the inner surface or the outer surface of the light-transmitting cover.

Further, the lens 10 includes a first lens 11 located on a proximal side of the lens barrel 20, wherein the heating element 30 is preferably implemented as an electric heating wire, such as a metal or an alloy material, such as silver wire, copper wire, iron chromium wire, chromium nickel, etc., wherein the electric heating wire material may also be a conductive adhesive, a conductive silver paste, or a conductive carbon paste, etc., wherein the heating element 30 is disposed in the non-light-transmitting area 102 of the first lens 11, and wherein the at least two terminals 31 of the heating element 30 are disposed in the non-light-transmitting area 102 of the first lens 11 without overlapping each other. Optionally, the heating element 30 may further include an ITO film, wherein the heating element 30 is disposed in a light-transmitting region 101 of the first lens 11, and wherein the at least two terminals 31 of the heating element 30 are disposed in a non-light-transmitting region 102 of the first lens 11 without overlapping each other.

Alternatively, the first lens 11 may be basically implemented as a structure in which the shape from the outer surface to the inner surface is a convex-concave shape, or may be implemented as a structure in which the shape from the outer surface to the inner surface is a convex-concave shape, or a double-convex shape, and the like, wherein the peripheral region 1021 of the outer surface, the side surface 1022, or the peripheral region 1023 of the inner surface of the first lens 11 is supported against the wall of the lens barrel 20 to form the non-light-transmission region 102. The non-light-transmitting region 102 is formed by either the peripheral region 1023 of the inner surface of the first lens 11 bearing against a spacer such as a spacer or washer, or the periphery of the inner surface of the first lens 11 bearing directly against the peripheral region of an adjacent lens on the inside of the first lens 11. Alternatively, the peripheral area 1021 of the outer surface of the first lens 11 is fixed by an inner pressing ring, wherein the inner pressing ring is threaded on the inner wall of the lens barrel 20, and the peripheral area 1021 of the outer surface of the first lens 11 is supported by the inner pressing ring, so that the peripheral area 1021 of the outer surface of the first lens 11 is the non-light-transmitting area 102. Or the peripheral area 1021 of the outer surface of the first lens 11 is fixed by an outer pressing ring, wherein the outer pressing ring is threaded on the outer wall of the lens barrel 20, and the peripheral area edge of the outer surface of the first lens 11 is supported against the outer pressing ring, so that the peripheral area 1021 of the outer surface of the first lens 11 is the non-light-transmitting area 102. That is, the non-light-transmitting area 102 of the first lens 11 is selected from one or more combinations of a peripheral area 1021 on the outer surface, a peripheral area 1022 on the side surface, and a peripheral area 1023 on the inner surface of the first lens 11, and accordingly, the terminal 31 of the heating element 30 is disposed on the first lens 11 at a position selected from one or more combinations of a peripheral area 1021 on the outer surface, a peripheral area 1022 on the side surface, and a peripheral area 1023 on the inner surface of the first lens 11.

It will be appreciated that one of the electrically conductive elements 40 is electrically connected to the positive terminal 31 of the heating element 30, and that the wire connection terminal 41 of the positive electrically conductive element 40 is connected to the positive terminal of the power supply unit via one of the wires 50. The other conductive element 40 is electrically connected to the terminal 31 of the negative electrode of the heating element 30, and the lead connecting end 41 of the conductive element 40 of the negative electrode is connected to the negative electrode of the power supply device through the other lead 50, so that the terminals 31 of the positive electrode and the negative electrode of the heating element 30 are respectively connected to the positive electrode and the negative electrode of the power supply device through the conductive element 40 and the lead 50, respectively, so that the power supply device can smoothly supply power to the heating element 30.

That is, the heating element 30 is indirectly electrically connected to the wire 50 via the conductive element 40, wherein the wire 50 is electrically connected to the wire connecting end 41 of the conductive element 40, wherein the conductive element 40 is electrically connected to the terminal 31 of the heating element 30. Preferably, the wire 50 is soldered to the wire connecting end 41 of the conductive element 40, wherein the conductive element 40 is connected to the terminal 31 of the heating element 30 by means of contact electrical connection without soldering, and the wire 50 is not directly connected (e.g. soldered) to the terminal 31 of the heating element 30, thereby reducing the difficulty of the manufacturing process. The resistance value of the terminal 31 of the heating element 30 of the optical device 100 according to this embodiment can be substantially the same as that of the other positions, so that the heating element 30 can generate heat uniformly. In other words, the conductive element 40 serves as a transition element for indirect connection between the heating element 30 and the wire 50, so that the problem of uneven heating of the heating element 30 caused by welding or the like between the heating element 30 and the wire 50 is avoided, the heating element 30 can uniformly heat the lens 10 of the optical device 100, that is, the diffusion of water attached to the surface of the lens 10 is accelerated, or fogging or frosting of the surface of the lens 10 is prevented, and the optical performance of the optical device 100 is ensured.

It is worth mentioning that the shape structure of the conductive element 40 can be adjusted adaptively according to the shape structure of the heating element 30 and the arrangement position of the terminals 31, wherein the shape structure of the conductive element 40 is preset in a manner that the conductive element 40 can be fixed and maintained at a position where it is electrically connected with the terminals 31 of the heating element 30 in a matching manner, and meanwhile, the connection manner between the conductive element 40 and the conductive wire 50 can realize multi-angle or multi-position access of the conductive wire 50, thereby reducing the process difficulty. In the present embodiment, the conductive element 40 may be made of a conductive material such as a metal material, an alloy material such as a copper alloy or an aluminum alloy material, a composite metal material, a conductive filler, a carbon material, or a polymer conductive material, wherein the conductive element 40 may be a block-shaped structure, a dot-shaped structure, an arc-shaped structure, a sheet-shaped structure, a strip-shaped structure, a body-shaped structure, an irregular shape, or any combination thereof made of a conductive material, and is not limited herein.

It can be understood that, since the conductive contact area of the conductive element 40 is significantly larger than the joint area of a common wire, the conductive element 40 and the terminal 31 of the heating element 30 can be electrically connected together by direct contact, and the conductive element 40 has a certain volume and is easy to fix without performing a soldering connection with the terminal 31 of the heating element 30, which not only reduces the process difficulty, but also ensures the connection reliability.

As shown in fig. 2 and 3, further, the conductive element 40 has a conductive contact surface 401, wherein the conductive contact surface 401 is electrically connected to the terminal 31 in a surface contact manner, wherein the conductive contact surface 401 has a certain area, wherein the terminal 31 of the heating element 30 is a pad, and wherein the conductive contact surface 401 and the terminal 31 are just capable of being in contact connection with each other in a matching manner. Alternatively, the terminal 31 of the heating element 30 may also be implemented as a point structure, wherein the conductive contact surface 401 is electrically connected to the terminal 31 in a point-surface contact manner, wherein the conductive contact surface 401 may be implemented as a surface-to-surface contact with the first lens 11. Compared with the conventional method of directly welding the wire to the heating element, the conductive contact surface 401 of the conductive element 40 of the present invention is significantly larger than the cross section of the wire, wherein a certain contact area is provided between the conductive contact surface 401 of the conductive element 40 and the terminal 31 of the heating element 30, so as to improve the connection stability between the conductive contact surface 401 of the conductive element 40 and the terminal 31 of the heating element 30.

In the manufacturing process, the conductive contact surface 401 is electrically connected to the terminal 31 in a surface contact manner, so that the connection accuracy between the heating element 40 and the terminal 31 of the heating element 30 is improved, the mounting difficulty is reduced, and the product yield is improved. Moreover, a large area of solder joint such as a solder joint is not formed between the conductive contact surface 401 and the terminal 31, thereby ensuring that the resistance at the position of the terminal 31 of the heating element 30 is not significantly increased, thereby ensuring the uniformity of heat generation of the heating element 30.

It is worth mentioning that the shape and size of the conductive contact surface 401 of the conductive element 40 can be preset according to actual requirements, so that the area of the contact electrical connection between the conductive contact surface 401 of the conductive element 40 and the terminal 31 of the heating element 30 can be preset according to actual requirements, thereby avoiding the problem of great welding difficulty caused by extremely small welding area between the traditional lead and the heating wire, and improving the yield of products.

Optionally, the conductive element 40 is fixed by a conductive adhesive 60 in a bonding manner at a position electrically contacting the terminal 31 of the heating element 30, so that the conductive element 40 and the heating element 30 on the first lens 11 are relatively fixed, and the conductive element has conductive reliability, thereby achieving easy assembly and reducing the connection cost of the terminal 31 of the heating element 30. In other words, the conductive adhesive 60 is dispensed between the conductive contact surface 401 of the conductive element 40 and the terminal 31 of the heating element 30 of the first lens 11, or the conductive adhesive 60 is dispensed between the conductive contact surface 401 of the conductive element 40 and the surface of the first lens 11 and electrically connected to the terminal 31 of the heating element 30, so that a conductive adhesive layer is formed between the conductive contact surface 401 of the conductive element 40 and the heating element 30 of the first lens 11, wherein the conductive adhesive 40 is an adhesive having a certain conductivity after being cured or dried, and the conductive adhesive may be a silver-based conductive adhesive, a gold-based conductive adhesive, a copper-based conductive adhesive, a carbon-based conductive adhesive, and the like, which are not limited herein.

As shown in fig. 4A, optionally, the optical device 100 further includes at least one fixing element 70, wherein the conductive element 40 is fixed and held by the fixing element 70 at a position in contact and electrical connection with the terminal 31 of the heating element 30 located on the first lens 11, so that the conductive element 40 and the heating element 30 located on the first lens 11 are relatively fixed, and the conductive contact surface 401 of the conductive element 40 is just kept in contact with the terminal 31 of the heating element 30. Preferably, the fixing element 70 is implemented as an elastic element such as a spring, a wave spring, an elastic ring, or the like, and the fixing element 70 may be made of an electrically conductive material or an electrically non-conductive material, wherein the fixing element 70 tightly adheres the conductive element 40 to the terminal 31 of the heating element 30 by elasticity. Specifically, the fixing element 70 is disposed between the wall of the lens barrel 20 and the conductive element 40 with a certain elastic force, wherein one end of the fixing element 70 is disposed on the wall of the lens barrel 20, and the other end of the fixing element 70 is disposed on the conductive element 40, wherein the elastic force generated by the fixing element 70 tightly contacts the conductive contact surface 401 of the conductive element 40 to the terminal 31 of the heating element 30 and keeps relatively fixed with the first lens 11, thereby ensuring the stability of the circuit and preventing the heating efficiency of the heating element 30 from being affected by the looseness generated when the optical device 100 is heated or moved.

As shown in fig. 4B, in this embodiment, in order to further enhance the connection reliability between the conductive contact surface 401 of the conductive element 40 and the terminal 31 of the heating element 30, the conductive element 40 is fixed and held by the fixing element 70 at a position where the terminal 31 of the heating element 30 is electrically connected, and at the same time, the conductive contact surface 401 of the conductive element 40 and the terminal 31 of the heating element 30 are adhesively connected by the conductive adhesive 60, so as to further prevent the conductive element 40 and the heating element 30 of the first lens 11 from loosening at high temperature and further affecting the heating of the heating element 30.

Preferably, the terminal 31 of the heating element 30 is disposed at a peripheral region 1023 (located in the non-light-transmission region 102) of the inner surface of the first lens 11, wherein the lens barrel 20 has at least one fixing cavity 201 and at least one wire channel 202, wherein the fixing cavity 201 is located between the peripheral region 1023 of the inner surface of the first lens 11 and the barrel wall 21 of the lens barrel 20, and wherein the wire channel 202 communicates with the fixing cavity 210 and extends along the interior of the barrel wall 21 to the bottom 211 of the barrel wall 21. The conductive element 40 is mounted in the fixing cavity 201 and the conductive contact surface 401 abuts against the terminal 31 of the heating element 30, wherein the conductive contact surface 401 of the conductive element 40 and the terminal 31 of the heating element 30 are connected by the adhesive connection of the conductive adhesive 60, wherein the fixing element 70 is mounted in the fixing cavity 201 between the conductive element 40 and the cylindrical wall 21, wherein the fixing element 70 provides a force for keeping the conductive element 40 fixed to the terminal 31 of the heating element 30. Optionally, the fixing element 70 is installed in the fixing cavity 201 and located between the conductive element 40, the cylinder wall 21 and the first lens 11, and provides the acting force. That is, the force provided by the securing element 70 holds the conductive element 40 securely in the peripheral region 1023 of the inner surface of the first lens 11 and in proper electrical contact with the terminal 31, thereby preventing loosening. The lead wire 50 extends from the lead wire terminal 41 of the conductive element 40 in the fixing cavity 201 to the bottom 211 of the cylinder wall 21 along the lead wire channel 202, and is connected with the power supply device, so that the power supply rationality is realized.

Further, the fixing element 70 is implemented as an elastic element, wherein one end of the fixing element 70 is mounted on the conductive element 40, and the other end is mounted on the cylindrical wall 21 or on the lens adjacent to the inner side of the first lens 11, wherein the fixing element 70 provides a certain elastic force to fixedly hold the conductive contact surface 401 of the conductive element 40 on the terminal 31 of the heating element 30, or the fixing element 70 is in a compressed state between the conductive element 40 and the cylindrical wall 21, so that the fixing element 70 can always provide an elastic force to act on the fixing element 70, thereby always keeping the fixing element 70 in a position of electrically contacting with the terminal 31 of the conductive element 30.

Alternatively, the conductive adhesive 60 may not be disposed between the conductive element 40 and the terminal 31 of the heating element 30, and the conductive contact surface 401 of the conductive element 40 can be fixedly held by the fixing element 70 at a position that is always in electrical contact with the terminal 31 of the heating element 30, so that the conductive reliability can be achieved, and the heating efficiency of the heating element 30 is prevented from being affected by loosening when the optical device 100 is heated or moved.

Alternatively, the conductive contact surface 401 of the conductive element 40 and the terminal 31 of the heating element 30 may be connected by the conductive adhesive 60 only without providing the fixing element 70, and the conductive reliability may be achieved, so as to prevent the heating efficiency of the heating element 30 from being affected by the loosening generated when the optical device 100 is heated or moved.

In a first variation of this embodiment, as shown in fig. 4C, the terminal 31 of the heating element 30 is disposed on the side surface 1022 of the first lens 11, wherein the conductive element 40 includes a first conductive element 42 and a second conductive element 43, wherein the first conductive element 42 has the conductive contact surface 401, wherein the first conductive element 42 is fixed between the side surface 1022 of the first lens 11 and the barrel wall 21 and the conductive contact surface 401 is in electrical contact with the terminal 31, wherein the second conductive element 43 is disposed in the fixing cavity 201, wherein the first conductive element 42 is extended to the second conductive element 43 and electrically connected together, and wherein the conductive wire 50 is extended from the second conductive element 43 along the conductive wire passage 202. The securing element 70 is disposed between the second conductive element 43 and the barrel wall 21, wherein the securing element 70 provides a force, such as a spring force, to fixedly retain the first conductive element 42 and the second conductive element 43 in a position in contact electrical connection with the terminal 31 of the conductive element 30. In other words, the fixing element 70 provides a spring force to press the first conductive element 42 and the second conductive element 43 against the cylinder wall 21 in the fixing cavity 201, wherein the first conductive element 42 is extended to the side surface 1022 of the first lens 11 and electrically connected to the terminal 31 of the heating element 30.

As shown in fig. 4D, it is understood that the first conductive element 42 and the second conductive element 43 may be implemented by the same or different conductive materials, wherein the first conductive element 42 and the second conductive element 43 are in contact with each other and electrically connected, or, to ensure the conductive performance, the first conductive element 42 and the second conductive element 43 may be integrally connected, or welded, or snapped, or bonded by the conductive adhesive 60, etc., without being limited thereto. Alternatively, the first conductive element 42 and the terminal 31 of the heating element 30 may be adhesively connected by the conductive adhesive 60. Alternatively, the first conductive element 42 and the second conductive element 43 may be implemented as a single conductive element, but is not limited thereto.

As shown in fig. 5A, in a second modified embodiment of the present embodiment, the optical apparatus 100 further includes a heat insulating member 80, wherein the heat insulating member 80 is disposed on the first lens 11 in a manner of reducing heat loss of the heating element 30, and the heat insulating member 80 is made of an insulating material, has a heat insulating effect and is non-conductive, so as to improve the heat generating efficiency of the heating element 30 and reduce heat loss. Further, the terminals 31 of the heating element 30 are disposed in a peripheral area 1023 of the inner surface of the first lens 11, wherein the thermal shield 80 holds the conductive contact surface 401 of the conductive element 40 in a position to be in electrical contact with the terminal 31 of the heating element 30, wherein the thermal insulation member 80 is preferably implemented as a ring structure, wherein the thermal insulation member 80 is fixedly held outside the non-light-transmission region 102 of the first lens 11, wherein the thermal insulator 80 is installed between the first lens 11 and the barrel wall 21 of the lens barrel 20 and provides a force to keep the conductive element 40 and the first lens 11 relatively fixed, wherein the conductive element 40 is fixedly held between the thermal shield 80 and the first lens 11 and is in electrical contact with the terminal 31 of the heating element 30. It is understood that the contact surface between the conductive contact surface 401 of the conductive element 40 and the terminal 31 of the heating element 30 can be designed according to practical requirements, for example, the area of the conductive contact surface 401 is substantially equal to the area of the terminal 31 of the heating element 30, so as to increase the conductive contact area, and the application range is wide, and is not limited herein.

It can be seen that in the second variant embodiment, the conductive element 40 can be held in electrical contact with the terminal 31 of the heating element 30 only by the thermal insulator 80, and at the same time, the thermal insulator 80 also has the effect of reducing the heat dissipation of the heating element 30.

As shown in fig. 5B, optionally, in the second modified embodiment, the wire connecting end 41 of the conductive element 40 and the wire 50 may be connected by dispensing or welding, wherein the fixing element 70 is disposed between the conductive element 40 and the thermal insulator 80 in a manner of enhancing the connection effect, wherein the fixing element 70 is an elastic element, wherein two ends of the fixing element 70 are respectively connected to the conductive element 40 and the thermal insulator 80, and wherein the fixing element 70 provides a force, such as an elastic force, to relatively fix the conductive element 40 and the thermal insulator 80, so as to prevent the loosening from occurring when the optical device 100 is moved or the heating element 30 is heated up and thus the heating efficiency is not affected.

Further, the thermal insulator 80 is made of an insulating material, and for some metal lenses, for example, the cylinder wall 21 of the lens barrel 20 is made of a metal material, wherein the thermal insulator 80 is used for blocking the conduction of electricity between the conductive element 40 and the cylinder wall 21, so as to ensure the reliability of the circuit.

As shown in fig. 5D, in the second modified embodiment, the heat insulator 80 is implemented as a ring structure that is attached to the peripheral area 1023 or the side surface of the inner surface of the first lens 11, wherein the heat insulator 80 is fixed between the first lens 11 and the barrel wall 21 of the lens barrel 20, and the conductive contact surface 401 of the conductive element 40 slightly protrudes from the attachment surface of the heat insulator 80, so as to prevent the conductive element 30 from melting and adhering to the heat insulator 80 at high temperature to cause the conductive element 30 to break, thereby ensuring process reliability.

That is, when the heating element 30 is disposed on the peripheral region 1023 of the inner surface of the first lens 11, the thermal insulator 80 is attached to the peripheral region 1023 of the inner surface of the first lens 11, so as to cover the heating element 30 as much as possible to reduce heat dissipation, wherein the conductive elements 40 are disposed at local positions of the thermal insulator 80 separately from each other, wherein the conductive contact surfaces 401 of the conductive elements 40 just contact the terminals 31 connected to the corresponding heating elements 30. When the heating element 30 is disposed on the side surface 1022 of the first lens 11, the thermal insulator 80 is attached to the side surface 1022 of the first lens 11 and covers the heating element 30 as much as possible to reduce heat loss, wherein the conductive elements 40 are disposed at local positions of the thermal insulator 80 separately from each other, and the conductive contact surfaces 401 of the conductive elements 40 just contact the terminals 31 connected to the corresponding heating elements.

As shown in fig. 5C, the thermal insulator 80 is optionally implemented as a cylindrical structure wrapped around the outside of the conductive element 40, wherein the conductive element 40 is used to reduce heat dissipation at the connection between the conductive contact surface 401 of the conductive element 40 and the terminal 31 of the heating element 30. Optionally, the front end of the conductive element 40 has an elastic body 402, wherein the elastic body 402 forms the conductive contact surface 401, wherein the elastic body 402 is a pogo pin, so as to enhance the conductive reliability between the conductive contact surface 401 of the conductive element 40 and the terminal 31 of the heating element 30, and wherein the conductive wire 50 and the conductive wire connection end 41 of the conductive element 40 are adhesively fixed by the conductive adhesive 60.

In the second embodiment, the conductive contact surface 401 of the conductive element 40 slightly protrudes from the surface of the thermal insulation member 80 to prevent the conductive element 30 from melting at high temperature and adhering to the thermal insulation member 80 to cause the conductive element 30 to break. The thermal insulator 80 is made of an insulating material to block the conduction of electricity between the conductive member 40 and the cylindrical wall 21, thereby ensuring the reliability of the circuit.

It is noted that the area of the wire connection end 41 may substantially coincide with the cross-section of the wire 50 and be smaller than the area of the conductive contact surface 401 of the conductive element 40. In other words, the contact area between the wire connection end 41 and the wire 50 is smaller than the contact area between the conductive contact surface 401 and the terminal 31 of the heating element 30. Alternatively, the wire connecting end 41 of the conductive element 40 may be integrally connected to the wire 50, so that the conductive element 40 and the wire 50 form an integral conductor.

It is worth mentioning that in the manufacturing process, a worker can weld the lead 50 and the lead connecting end 41 of the conductive element 40 together in advance, and then align and connect the conductive contact surface 401 of the conductive element 40 to the terminal 31 of the corresponding heating element 30 mounted on the lens 10, so as to reduce the mounting difficulty and improve the product yield.

In a third variant of this embodiment, as shown in fig. 6A and 6B, the heating element 30 is disposed in a peripheral region 1023 of the inner surface of the first lens 11, wherein the terminal 31 of the heating element 30 extends to the side surface 1022 of the first lens 11, wherein the first conductive element 42 of the conductive element 40 is disposed between the side surface 1022 of the first lens 11 and the cylindrical wall 21 and the conductive contact area 401 is in electrical contact with the terminal 31, wherein the second conductive element 43 is fixedly held in the fixing cavity 201, and wherein the first conductive element 42 and the second conductive element 43 are integrally connected to form an L-shaped structure. The thermal insulation 80 is disposed outside the heating element 30 in a manner to reduce heat loss, thereby reducing heat loss from the heating element 30. Further, the thermal insulation member 80 is installed between the second conductive element 43 and the heating element 30, and fixedly holds the second conductive element 43 in the fixing cavity 201, so as to prevent the heating efficiency of the heating element 30 from being affected by looseness generated when the optical device 100 is moved or the temperature is increased by heating.

In this embodiment, optionally, the wire passage 202 extends from the fixing cavity 201 to the bottom 211 of the cylinder wall 21 along the inside of the cylinder wall 21, so that the wire 50 is led out from the bottom 211 of the cylinder wall 21 and connected to the power supply device. As shown in fig. 7, optionally, the wire channel 202 leads from the fixing cavity 201 to the outside of the sidewall of the cylinder wall 21, so that the wire 50 leads from the side 212 of the cylinder wall 21 and is connected to the power supply device.

It is understood that the lead passage 202 may be implemented as one, wherein the lead 50 of the positive pole and the lead 50 of the negative pole both extend outwardly along the lead passage 202. Alternatively, the two wire passages 202 may be implemented as two, wherein the two wire passages 202 may be preferably symmetrically disposed on two sides of the barrel wall 21 of the lens barrel 20, wherein the positive wire 50 extends outward along one of the wire passages 202, and the negative wire 50 extends outward along the other wire passage 202, although the two wire passages 202 may not be symmetrically disposed, and are not limited herein.

As shown in fig. 8A, in the present embodiment, the two terminals 31 of the heating element 30 are symmetrically disposed on two sides of the non-light-passing area 102 of the first lens 11, one of the conductive elements 40 is fixedly held at a position in electrical contact with one of the terminals 31, the other conductive element 40 is fixedly held at a position in electrical contact with the other terminal 31, the conductive contact surfaces 401 of the two conductive elements 40 are each implemented in a point-like surface structure, and the area of the conductive contact surface 401 substantially matches the area of the terminal 31 of the heating element 30.

As shown in fig. 8B, optionally, the two terminals 31 of the heating element 30 are separately disposed on the same side of the non-light-passing region 102 of the first lens 11, one of the conductive elements 40 is fixedly held in a position of electrical contact connection with one of the terminals 31, the other conductive element 40 is fixedly held in a position of electrical contact connection with the other terminal 31, and the conductive contact surfaces 401 of the two conductive elements 40 are both implemented in a point-shaped surface structure and do not contact each other.

As shown in fig. 8C, optionally, the conductive contact surfaces 401 of the two conductive elements 40 are implemented as arc-shaped surface structures, and are not in contact with each other, wherein one of the conductive elements 40 extends along one side of the periphery of the first lens 11 and is electrically connected to one of the terminals 31 of the heating element 30, and the other conductive element 40 extends along the other side of the periphery of the first lens 11 and is electrically connected to the other terminal 31 of the heating element 30. As shown in fig. 8D, it can be understood that the arc lengths of the conductive contact surfaces 401 of the two conductive elements 40 can be arbitrarily preset without contacting each other, but do not exceed the non-light-transmitting area 102 of the lens 10, wherein the area of the conductive contact surfaces 401 can be greater than or equal to the area of the terminals 31 of the heating element 30, so that the contact surface between the conductive contact surfaces 401 of the conductive elements 40 and the terminals 31 of the heating element 30 can be pre-designed according to the shape and position of the terminals 31 of the heating element 30 according to practical requirements, and the application range is wide.

Alternatively, the conductive contact surface 401 of one of the conductive elements 40 is implemented as a point-shaped surface structure, and the conductive contact surface 401 of the other conductive element 40 is implemented as an arc-shaped surface structure, which is not limited herein.

Further, each of the terminals 31 of the heating element 30 is reserved to be electrically connected to the corresponding conductive contact surface 401 of the conductive element 40, and the rest of the heating element 30 is subjected to an insulation treatment, such as a blackening treatment, so that the contact surfaces of the heating element 30 and the conductive element 40 can be arbitrarily arranged, and thus the contact surfaces of the conductive element 40 and the first lens 11 can be preset, or the structure of each of the terminals 31 of the heating element 30 and the structure of the conductive contact surface 401 of the conductive element 40 are designed in a matching manner, thereby improving the heating efficiency of the heating element 30 and reducing the difficulty in manufacturing the optical device 100.

The present embodiment further provides a method for manufacturing the optical device 100, including the following steps:

s01, disposing the heating element 30 on the lens 10;

s02, mounting the lens 10 on the lens barrel 20;

s03, fixedly holding the conductive element 40 in a position to be in electrical contact with the terminal 31 of the heating element 30, wherein the conductive element 40 has the conductive contact surface 401, wherein the conductive contact surface 401 is electrically connected to the terminal 31 of the heating element 30 in a surface contact manner; and

s04, extending the conducting wire 50 from the conducting element 40 to the outside of the lens barrel 20 along the conducting wire channel 202 of the barrel wall 21 for power supply connection to the power supply device.

Optionally, in step S03, the conductive element 40 and the heating element 30 on the first lens 11 are adhered and held relatively fixed by the conductive adhesive 60.

Optionally, in step S03, the conductive element 40 is fixed and held by the fixing element 70 in a position of contacting and electrically connecting with the terminal 31 of the heating element 30 of the first lens 11.

Optionally, in the step S03, the thermal insulator 80 is fixedly held at the outer side of the lens 10, wherein the thermal insulator 80 is installed between the lens 10 and the lens barrel 20 and provides a force to keep the conductive element 40 and the lens 10 relatively fixed, wherein the thermal insulator 80 is insulated and thermally insulated, wherein the conductive element 40 is fixedly held between the thermal insulator 80 and the lens 10 and electrically contacts with the terminal 31.

Fig. 9 and 10 show an optical device 100A according to a first modified embodiment of the present invention, wherein the optical device 100A is different from the optical device 100 according to the present preferred embodiment in that the optical device 100A includes at least one lens 10A, a lens barrel 20A, at least one heating element 30A, and at least two conductive elements 40A, wherein the lens barrel 20A is implemented as a plastic lens barrel or a lens barrel made of a non-conductive material, wherein the lens 10A is mounted on the lens barrel 20A, wherein the heating element 30A is disposed on a first lens 11A on an object-near side of the lens 10A, wherein the heating element 30A has at least two terminals 31A. The lens barrel 20A includes a barrel wall 21A, wherein the barrel wall 21A is made of a plastic material or an electrically non-conductive material, wherein the barrel wall 21A has at least two wire passages 202A, wherein the at least two wire passages 202A are not in communication with each other and extend from the position of the terminal 31A of the heating element 20A to the outside of the bottom or the side of the barrel wall 21A along the inside of the barrel wall 21A, wherein the at least two conductive elements 40A are formed by respectively injecting conductive paste into the at least two wire passages 202A and are electrically connected to the corresponding terminals 31A of the heating element 20A, and wherein the conductive elements 40A are electrically connected to a power supply device at the outside of the barrel wall 21A so that the power supply device supplies power to the heating element 30A. That is to say, the optical device 100A realizes the arrangement of the wires of the plastic module by means of injection molding of the conductive paste without additionally assembling the wires, so that the optical device 100A is simple to assemble, the appearance is optimized, and the optical performance is not affected.

In other words, the conductive element 40A is formed by solidifying a conductive paste in a molten or liquid state, wherein the conductive element 40A does not have a conventional plastic sheath of the outer layer of the conductive wire, and the cylindrical wall 21A is wrapped around the outer side of the conductive element 40A, so that the cylindrical wall 21A and the conductive element 40A integrally form a structure similar to the conductive wire. In the manufacturing process, a molten or liquid conductive paste is injected into the wire passage 202A and extends to the terminal 31A of the heating element 30A, wherein the molten or liquid conductive paste is solidified to form the conductive element 40A electrically connected to the terminal 31A. Compared with the conventional optical device, the conductive element 40A of the present embodiment does not need to be fixedly connected to the terminal 31A of the heating element 30A through a soldering process, so as to avoid the problem of uneven heating of the heating element caused by soldering or the like between the heating element and a lead wire.

Further, as shown in fig. 9, the conductive member 40A has a conductive contact surface 401A, wherein the conductive contact surface 401A is electrically connected to the terminal 31A of the heating element 30A in a surface contact manner. Optionally, the terminal 31A of the heating element 30A is located on a side surface of the first lens 11A, wherein the wire channel 202A is extended to the side surface of the first lens 11A, or the side surface of the first lens 11A is exposed to the wire channel 202A, so that the terminal 31A of the heating element 30A is exposed to the wire channel 202A. When the conductive paste is injected into the wire passage 202A, the conductive paste just extends to contact the terminal 31A of the heating element 30A, so that the conductive element 40A formed by curing the conductive paste just extends to contact the terminal 31A. As shown in fig. 10, optionally, the terminal 31A of the heating element 30A is located at a peripheral area of an inner surface of the first lens, the wire channel 202A is extended to a peripheral area of an inner surface of the first lens 11, or a peripheral area of an inner surface of the first lens 11 is exposed to the wire channel 202A, wherein the terminal 31A of the heating element 30A is exposed to the wire channel 202A, so that the conductive element 40A after the conductive paste is cured and molded extends to just contact with the terminal 31A.

It is worth mentioning that the exposed area of the terminal 31A of the heating element 30A and the area of the wire passage 202A can be preset according to actual requirements, so that the contact area between the conductive contact surface 401A of the conductive element 40A and the terminal 31A formed after the conductive paste is injected into the wire passage 202A can be preset according to actual requirements. In other words, the area shape of the conductive contact surface 401A of the conductive element 40A can be preset according to actual requirements, wherein the contact area between the conductive contact surface 401A and the terminal 31A can be preset. Alternatively, the area of the conductive contact surface 401A substantially coincides with the area of the terminal 31A. Further, the width and the extending direction of the wire channel 202A can be preset, or the area shape of the first lens 11A exposed to the wire channel 202A is preset, so as to guide the conductive paste in a molten state or a liquid state to form the conductive element 40A in a preset shape after being solidified and molded, wherein the area shape of the conductive contact surface 401A of the conductive element 40A is preset, so that the contact area between the conductive contact surface 401A and the terminal 31A of the heating element 30A can be preset according to actual requirements. It is understood that the wire channels 202A are not communicated with each other, so that the injection-molded conductive elements 40A are not short-circuited, wherein the wire channels 202A extend to the corresponding terminals 31A of the heating element 30A, and wherein after the injection-molded wires 40A are injected into the wire channels 202A, the conductive elements 40A are electrically connected to the corresponding terminals 31A of the heating element 30A, respectively, so as to ensure the reasonability of the circuit.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. An optical device, comprising:

at least one lens;

a lens barrel, wherein the lens is mounted to the lens barrel;

at least one heating element; and

2. The optical device of claim 1, wherein the area of the conductive contact surface is equal to or greater than the area of the terminal.

3. The optical device according to claim 1 or 2, further comprising at least two wires, wherein the at least two wires are electrically connected to the corresponding conductive elements respectively, so that the conductive elements are connected to the power supply device through the wires.

4. The optical device of claim 3, wherein said optical device further comprises a conductive adhesive, wherein said conductive contact surface of said conductive element is adhesively secured in position to electrically contact said terminal of said heating element by said conductive adhesive.

5. The optical device of claim 4, wherein the conductive glue is dispensed between the conductive contact surface of the conductive element and the lens and in electrical contact with the terminal of the heating element.

6. The optical device of claim 3, wherein the optical device further comprises at least one securing element, wherein the conductive element is fixedly held by the securing element in a position in contact electrical connection with the terminal of the heating element.

7. The optical apparatus according to claim 6, wherein the barrel has at least one fixing cavity and at least one wire passage, wherein the fixing cavity is located between the lens and a barrel wall of the barrel, wherein the conductive member is mounted in the fixing cavity and electrically contacts the terminal of the heating member, wherein the fixing member is mounted between the conductive member and the barrel wall and provides a force to keep the conductive member and the lens relatively fixed, and wherein the wire passage communicates with the fixing cavity and extends outwardly along the barrel wall for the wire to extend outwardly from the conductive member along the wire passage.

8. The optical device of claim 7, wherein the terminals of the heating element are disposed at a peripheral region of the inner surface of the lens, wherein the securing element provides a force to fixedly retain the conductive element at the peripheral region of the inner surface of the lens and in electrical contact with the terminals.

9. The optical device of claim 7, wherein the terminal of the heating element is disposed on a side surface of the lens, wherein the securing element provides a force to secure the conductive element to the barrel wall, wherein the conductive contact surface of the conductive element is extended to the side surface of the lens and is in electrical contact with the terminal.

10. The optical device of claim 9, wherein the conductive element comprises a first conductive element and a second conductive element, wherein the first conductive element has the conductive contact surface, wherein the securing element secures the first conductive element and the second conductive element to the barrel wall, wherein the conductive contact surface of the first conductive element is extended to the side surface of the lens and is in electrical contact with the terminal.

11. The optical device of claim 3, wherein the optical device further comprises a thermal shield, wherein the thermal shield is disposed on the lens in a manner that reduces heat dissipation from the heating element.

12. The optical apparatus according to claim 11, wherein the thermal insulator is installed between the lens and a barrel wall of the lens barrel and provides a force to keep the conductive member and the lens relatively fixed, wherein the thermal insulator insulates and insulates heat.

13. The optical device of claim 6, wherein said optical device further comprises a thermal shield, wherein said thermal shield is disposed on said lens in a manner that reduces heat dissipation from said heating element, wherein said conductive element is fixedly held between said thermal shield and said lens and in electrical contact with said terminal.

14. The optical device of claim 13, wherein the fixation element is disposed between the conductive element and the thermal shield in a manner that enhances the coupling effect.

15. The optical device of claim 1, wherein an interface between the conductive contact surface of the conductive element and the terminal of the heating element is preset according to a shape and a position of the terminal of the heating element.

16. The optical device according to claim 15, wherein the conductive contact surface of the conductive element is implemented as a point-like surface structure or an arc-like surface structure.

17. The optical device of claim 16, wherein two of said terminals are located on either side or the same side of said lens without contacting each other, wherein one of said conductive elements is fixedly held in electrical contact connection with one of said terminals, and wherein the other of said conductive elements is fixedly held in electrical contact connection with the other of said terminals.

18. The optical device according to any one of claims 15 to 17, wherein each of said terminals of said heating element is reserved for electrical contact connection with said conductive contact surface of the corresponding conductive element, wherein the remainder of said heating element is insulated.

19. The optical apparatus according to claim 1 or 2, wherein the barrel has a barrel wall, wherein the barrel wall is made of an electrically non-conductive material, wherein the barrel wall has at least two conductive traces that are not communicated with each other, wherein the at least two conductive traces are respectively extended to the terminals of the corresponding heating element, wherein the at least two conductive elements are solidified and formed by respectively injecting conductive paste into the at least two conductive traces so as to electrically connect the at least two conductive elements with the corresponding terminals.

20. The optical device of claim 19, wherein the terminals of the heating element are located on a side surface of the lens, wherein the wire channels are extended to a side surface of the lens, wherein the conductive contact surface of the conductive element is electrically connected to the terminals at the location of the side surface of the lens.

21. The optical device of claim 19, wherein the terminals of the heating element are located at a peripheral region of the inner surface of the lens, wherein the wire channels are extended to the peripheral region of the inner surface of the lens, wherein the electrically conductive contact surface is electrically connected with the terminals at the location of the peripheral region of the inner surface of the lens.

22. A method of manufacturing an optical device, comprising the steps of:

B. mounting the lens on a lens barrel; and

C. fixedly holding at least two conductive elements in respective electrical contact positions with the terminals of the heating elements, wherein the conductive elements have a conductive contact surface, wherein the conductive contact surface is electrically connected to the terminals of the heating elements in a surface contact manner, wherein the at least two conductive elements are used for connecting a power supply device so that the power supply device supplies power to the heating elements to heat the lenses, and wherein the sequence of the step A and the step B can be interchanged.

23. The method of claim 22, wherein in step C, the conductive element is adhesively secured in place in electrical contact with the terminal of the heating element by a conductive adhesive.

24. The method of manufacturing an optical device according to claim 22, wherein in the step C, the conductive member is fixedly held in a position in electrical contact with the terminal by at least one fixing member.

25. The method of manufacturing an optical device according to claim 24, wherein in step C, wherein the terminals of the heating element are disposed at a peripheral region of the inner surface of the lens, wherein the securing element provides a force to fixedly retain the conductive element at the peripheral region of the inner surface of the lens and in electrical contact with the terminals.

26. The method of claim 24, wherein in step C, the terminals of the heating element are disposed on a side surface of the lens, wherein the fixing element provides a force to fix the conductive element to a barrel wall of the lens barrel, wherein the conductive element is extended to the side surface of the lens and is in electrical contact with the terminals.

27. The method for manufacturing an optical device according to claim 24, wherein the step C further comprises the steps of: and fixing the conductive element in the position of electrical contact with the terminal of the heating element by a conductive adhesive.

28. A method of manufacturing an optical device according to any of claims 22 to 27, further comprising a step of: a thermal insulator is disposed on the lens to reduce heat dissipation of the heating element.

29. The method of manufacturing an optical device according to claim 28, wherein the thermal insulator is mounted between the lens and the barrel and provides a force to keep the conductive element and the lens relatively fixed, wherein the thermal insulator is insulated and thermally insulated.

30. The method according to claim 22, wherein in the step C, the barrel has a barrel wall, wherein the barrel wall is made of an electrically non-conductive material, wherein the barrel wall has at least two conductive traces that are not connected to each other, and wherein the at least two conductive elements are respectively formed by injection molding of a conductive paste into the at least two conductive traces.