CN112105104A

CN112105104A - Optical device and application thereof

Info

Publication number: CN112105104A
Application number: CN201910520733.0A
Authority: CN
Inventors: 黄虎钧; 刘荣伟; 叶裕庆
Original assignee: Ningbo Sunny Automotive Optech Co Ltd
Current assignee: Ningbo Sunny Automotive Optech Co Ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-12-18

Abstract

The invention provides an optical device and application thereof, comprising: the lens comprises at least one lens, a lens barrel and at least one heating element, wherein the lens barrel is provided with a mounting cavity, the lens is mounted in the mounting cavity of the lens barrel, the heating element can be electrified to generate heat to contact the surface of the lens arranged on the near side so as to heat the lens, so that the lens is heated to accelerate and disperse moisture attached to the surface, the active defogging and defrosting functions are achieved, and fogging, frosting and the like can be prevented.

Description

Optical device and application thereof

Technical Field

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

Background

An optical device, such as a lens or an optical protective cover. For example, the optical device is applied to a vehicle, wherein the lens is a vehicle-mounted lens, a photographic lens, a radar lens, a laser lens, or the like, wherein the lens generally includes at least one lens, wherein the lens may be classified as a glass lens, a resin lens, a PC lens, or the like according to different materials, and the optical protection cover is a front cover or a side turn cover of the vehicle, or the like. As is well known, when the lens is in a large temperature difference between the inside and the outside of the environment, or alternatively cooled and heated, or in a freezing environment in winter, moisture such as fog or frost is generated on the inner surface or the outer surface of the lens on the object-near side of the lens, which affects the transparency of the lens, and results in unclear imaging of the lens.

In an existing optical lens with a defogging function, the optical lens adopts a heating wire to heat the lens, wherein the heating wire is embedded into the side edge of the lens, and the heating wire is respectively connected to the positive electrode and the negative electrode of a power supply through positive and negative electrode leads at two sides of the lens, so that the heating wire generates heat. The heating wire has pins connected with the positive and negative leads, wherein the pins of the heating wire are usually arranged at relatively fixed positions on the lens barrel wall or in the lens barrel cavity of the optical lens. Because the internal structure of the optical lens is compact, the shape and distribution of the traditional heating element are greatly limited by the structure of the vehicle-mounted lens, and the connection angle of the pins of the electric heating wire is limited during production and manufacturing, so that the installation difficulty is high, and the installation failure rate is high.

In addition, in the conventional optical lens defogging technology, since the size of the lens is relatively fixed, the installation position of the heating element is limited, so that the installation length of the heating element is limited, and further, the resistance value of the heating element is limited or substantially not changed, so that the adjustment of the heating power of the heating element under the condition of the same voltage or current cannot be realized.

In addition, since the conventional vehicular lens has low light transmittance of the heating element, in order to ensure the optical performance of the first lens, the heating element is directly attached to a peripheral region (i.e., a non-light-transmitting region) of the first lens in contact with the first lens, and the heating element cannot be disposed in the light-transmitting region (i.e., a central region) of the first lens. Particularly, for the first lens with a large size, since the heating element can only directly heat the non-light-transmitting region of the first lens, heat is diffused from the non-light-transmitting region (i.e., the peripheral region) to the light-transmitting region (i.e., the central region), i.e., the light-transmitting region of the first lens cannot be directly heated, or the central light-transmitting region cannot be completely heated, so that the first lens is heated unevenly, the defogging and defrosting effects are poor, the optical axis of the on-vehicle lens is easy to deviate from the geometric central axis, and the eccentricity index and the imaging quality of the on-vehicle lens are seriously affected.

Disclosure of Invention

One of the primary advantages of the present invention is to provide an optical device and its application, wherein at least one lens of the optical device can be heated to accelerate the effect of dispersing the moisture attached to the surface of the lens, and prevent the surface of the lens from fogging or frosting.

Another advantage of the present invention is to provide an optical device and its application, in which the lens of the optical device is uniformly heated, and the optical axis of the lens is not easily deviated from the geometric central axis, so as to ensure the performance index and the imaging quality of the optical device.

Another advantage of the present invention is to provide an optical device and its use in which the shape of the member for heating the lens is arranged in a manner that is less limited by the structure of the optical device itself, thereby meeting the defogging requirements of different types of optical devices.

Another advantage of the present invention is to provide an optical device and an application thereof, wherein the non-light-transmission region and the light-transmission region of the lens can be set with different types of heating methods, so that the lens can be uniformly heated, thereby ensuring the performance index of the optical device.

Another advantage of the present invention is to provide an optical device and its application, wherein the means for heating the lens can meet any angle of lead wire access, thereby reducing installation difficulties.

It is another advantage of the present invention to provide an optical device and applications thereof in which the leads can be accessed symmetrically or asymmetrically to achieve uniform heating.

Another advantage of the present invention is to provide an optical device and its application that enable the heating power to be adjusted at the same voltage or current.

Another advantage of the present invention is to provide an optical device and its application, wherein the optical device requires less power consumption and lower cost compared to the conventional defogging method.

Another advantage of the present invention is to provide an optical device and its use in which the light-transmitting area of the lens can be heated in direct contact, and in particular for larger size lenses, the light-transmitting area of the lens can be heated substantially completely, thereby satisfying the effect of defogging or accelerating the dissipation of water in the light-transmitting area while preventing fogging or frosting.

Another advantage of the present invention is to provide an optical device and its application, which has a simple structure and a good defogging effect.

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 barrel has a mounting cavity, wherein the lens is mounted in the mounting cavity of the lens barrel; and

at least one heating element, wherein the heating element is electrically and thermally contactable with a surface of the lens disposed on the proximal side to heat the lens, wherein a pin of the heating element is disposed in a non-light-transmitting region of the lens.

In some embodiments, the heating element comprises a first heating element and at least two first pins electrically connected to the first heating element, wherein the first heating element has optical transparency, wherein the first heating element is disposed in an optical transmission region of the lens, and wherein the at least two first pins are disposed in a non-optical transmission region of the lens separately from each other.

In some embodiments, two of the first pins are disposed on two sides of the non-light-transmitting area of the lens to uniformly heat the heating element.

In some embodiments, the first pin is implemented as an arc structure, a dot structure, or a combination of an arc structure and a dot structure.

In some embodiments, the position where the first pin is disposed in the non-light-passing region of the lens is selected from a group consisting of: one of an upper position, a middle position, and a lower position.

In some embodiments, wherein the first heating element is further disposed in the non-light-passing region of the lens.

In some embodiments, the position in which the first heating element is arranged at the light transmission region of the lens is selected from the group consisting of: an inner surface, an outer surface, and one of the inner surface and the outer surface.

In some embodiments, wherein the first heating element is implemented as an ITO film.

In some embodiments, the optical device further comprises at least a second heating element, wherein the second heating element is disposed in a non-light-passing region of the lens.

In some embodiments, the second heating element is covered on a part of or the whole of the non-light-passing area.

In some embodiments, the second heating element has at least one second pin, wherein the second pin is disposed on both sides of the second heating element.

In some embodiments, the second heating element has a plurality of circular columns of protrusions, wherein the number of protrusions is preset according to the resistance value of the second heating element.

In some embodiments, the second heating element is implemented as a multi-loop structure of multiple heating elements connected in parallel.

In some embodiments, wherein the polycyclic structure is selected from the group consisting of: one of two-ring, three-ring, four-ring and five-ring.

In some embodiments, wherein the second heating element is implemented as a multi-loop structure of a plurality of heating elements connected in series.

In some embodiments, wherein the polycyclic structure is selected from the group consisting of: one of tricyclic, pentacyclic and heptacyclic.

In some embodiments, the second heating element is implemented as an arc structure extending in a single direction, wherein two ends of the second heating element are respectively provided with a second pin.

In some embodiments, the second heating element includes a wide heating element and a narrow heating element, wherein two ends of the wide heating element are connected to two ends of the narrow heating element to form an annular structure attached to the non-light-transmitting region, and two ends of the wide heating element respectively have a second pin.

In some embodiments, the position where the second heating element is arranged in the non-light-transmitting region of the lens is selected from the group consisting of: one or more combinations of side surfaces, a peripheral floor of the inner surface, and a peripheral region of the outer surface.

In some embodiments, wherein the second heating element is implemented as a heating wire.

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. providing a lens barrel and at least one lens, wherein the lens is mounted in a mounting cavity of the lens barrel; and

B. arranging at least one heating element on the surface of the lens on the near object side in a manner that the heating element can generate heat by electricity so as to heat the lens, wherein the pin of the heating element is arranged in a non-light-transmission area of the lens.

In some embodiments, wherein said step B comprises step B1: at least one first heating element is arranged in a light-transmitting area of the lens, and at least two first pins are arranged in a non-light-transmitting area of the lens in a mutually separated mode, wherein the first pins are electrically connected with the first heating element.

In some embodiments, it further comprises a step C: at least two leads are respectively extended from the first pin to a power supply unit.

In some embodiments, wherein said step B comprises step B2: at least one second heating element is arranged in a non-light-transmission area of the lens.

In some embodiments, wherein in the step C, the shape of the second heating element is preset according to the resistance value of the second heating element.

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 plan view of an optical device according to a preferred embodiment of the present invention.

Fig. 2A is a schematic structural diagram of the first lens of the optical device according to the above preferred embodiment of the present invention, which has a convex-concave structure from the outer surface to the inner surface.

Fig. 2B is a schematic structural diagram of another embodiment of the first lens of the optical device according to the above preferred embodiment of the present invention, which has a convex-concave structure from the outer surface to the inner surface.

Fig. 2C is a schematic structural view of the first lens of the optical device according to the above preferred embodiment of the present invention, which has a concave-convex structure from the outer surface to the inner surface.

Fig. 2D is a schematic structural diagram of the first lens of the optical device according to the above preferred embodiment of the present invention, which has a biconvex structure from the outer surface to the inner surface.

Fig. 2E is a schematic structural diagram of another embodiment of the first lens of the optical device according to the above preferred embodiment of the present invention, which has a biconvex structure from the outer surface to the inner surface.

Fig. 2F is a schematic structural diagram of the first lens of the optical device having a double concave structure from the outer surface to the inner surface according to the above preferred embodiment of the present invention.

Fig. 3 is a schematic plan view of a first pin of a first heating element of the optical device according to the above preferred embodiment of the present invention implemented in an arc-shaped structure.

Fig. 4 is a schematic plan view of the first pin of the first heating element of the optical device according to the above preferred embodiment of the present invention implemented in a dot-shaped structure.

Fig. 5A is a schematic plan view of a second heating element of the optical device according to the above preferred embodiment of the present invention, in which adjacent protrusions are spaced apart by a normal distance D1.

Fig. 5B is a schematic plan view of the optical device according to the above preferred embodiment of the present invention in which adjacent protrusions of the second heating element are spaced apart by a large distance D2.

Fig. 5C is a schematic plan view of the optical device according to the above preferred embodiment of the present invention in which adjacent protrusions of the second heating element are spaced apart by a small distance D3.

Fig. 6A is a schematic plan view illustrating a structure of a triple loop in which the second heating element of the optical apparatus according to the above preferred embodiment of the present invention is implemented with three heating wires connected in parallel.

Fig. 6B is a schematic plan view of the optical apparatus according to the above preferred embodiment of the present invention in which the second heating element is implemented as a four-loop structure in which four heating wires are connected in parallel.

Fig. 7A is a schematic plan view of the optical device according to the above preferred embodiment of the present invention, in which the second heating element is implemented as a three-loop structure in which three heating wires are connected in series.

Fig. 7B is a schematic plan view of the optical device according to the above preferred embodiment of the present invention, in which the second heating element is implemented as a five-ring structure in which five heating wires are connected in parallel.

Fig. 8 is a schematic plan view of the second heating element of the optical device according to the above preferred embodiment of the present invention implemented as a unidirectionally extending arc-shaped structure.

Fig. 9 is a schematic plan view of the optical device according to the above preferred embodiment of the present invention in which the second heating element is implemented as a ring structure having different widths.

Fig. 10 is a schematic plan view of the optical device according to the above preferred embodiment of the present invention, in which the second heating element is disposed at four different positions of the bottom non-light-transmitting area of the first lens.

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 10 show an optical device 100 according to a preferred embodiment of the present invention, wherein the optical device 100 is preferably implemented as an on-board lens or module for a vehicle. The optical device 100 includes at least one lens 10, a lens barrel 20 and at least one heating element 30, wherein the lens barrel 20 has a mounting cavity 201, wherein the lens 10 is mounted in the mounting cavity 201 of the lens barrel 20, wherein the lens 10 has a light-transmitting region 101 and a non-light-transmitting region 102, wherein the heating element 30 is disposed in the light-transmitting region 101 and the non-light-transmitting region 102 of the lens 10 for generating heat to enable the light-transmitting region 101 and the non-light-transmitting region 102 of the lens 10 to be directly heated, thereby achieving defogging or accelerating dissipation of moisture attached to the surface of the lens 10, and ensuring optical performance of the optical device.

Preferably, the pins (the first pin 311 and the second pin 321) of the heating element 30 are both arranged in the non-light-transmitting area 102 of the lens 10 on the proximal side, wherein the pins of the heating element 30 are preferably two pins separated from each other, and wherein the pins of the heating element 30 are used for connecting to a power supply unit such as a power supply through positive and negative leads (leads). In the manufacturing process, the heating element 30 and the pins of the heating element 30 can be arranged in advance on the lens 10, and then the lens 10 with the heating element 30 and the pins thereof is mounted on the lens barrel 20, and the pins of the heating element 30 can be arbitrarily arranged at any position of the non-light-transmission area 102 of the lens 10, and the pins of the heating element 30 can have a certain area to realize the access of any angle of the lead, so that the mounting difficulty is reduced, and the yield is improved.

As shown in fig. 1, it is understood that the lens 10 includes a first lens 11 located on an object side (outermost side) of the lens barrel 20, wherein the first lens 11 is axially mounted to the lens barrel 20, wherein the first lens 11 is basically implemented in a structure that a shape from an outer surface to an inner surface is a convex-concave shape, and may also be implemented in a structure that a shape from an outer surface to an inner surface is a convex-concave shape, a double-convex shape, or the like, without limitation, wherein a periphery of the first lens 11 is embedded in an inner wall of the mounting cavity 201 of the lens barrel 20. It can be seen that the peripheral portion of the first lens 11 contacts the lens barrel 20 to form the non-light-transmission region 102, wherein the upper surface and the lower surface of the first lens 11 do not contact the lens barrel 20 to form the light-transmission region 101.

In the present embodiment, the optical device 100 is mounted to a vehicle. In the driving process of the vehicle, under the influence of an external environment, such as a high temperature environment, a low temperature environment, a rain and snow environment, etc., the inner surface or the outer surface of the first lens 11 on the object side of the optical device 100 is most prone to condense moisture, form fog or frost, etc. The heating element 30 is disposed on the first lens 11, wherein the heating element 30 is configured to generate heat to heat the first lens 11, so as to accelerate and disperse moisture, fog, frost, or the like attached to an inner surface or an outer surface of the first lens 11, and has an active defogging and defrosting function, or prevent the inner surface or the outer surface of the first lens 11 from forming fog, frost, or the like, so as to ensure an optical performance of the optical device 100.

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. In the present embodiment, the arrangement manner in which the heating element 30 is disposed on the light-transmissive cover may be replaced with the arrangement manner in which the heating element 30 is disposed on the lens 10, which is not limited herein.

Further, the heating element 30 comprises at least one first heating element 31, wherein the first heating element 31 is disposed in the light passing region 101 of the first lens 11 for heating the light passing region 101 of the first lens 11 in direct contact therewith, so as to accelerate dissipation of moisture on the surface of the light passing region 101 or prevent fogging and the like.

Preferably, the first heating element 31 is implemented as an ITO film, wherein the light-transmitting region 101 of the first lens 11 is selectively coated with the first heating element 31 by sputtering or evaporation. The first heating element 31 has at least two first pins 311, wherein the first pins 311 are disposed in the non-light-transmitting region 102 of the first lens 11, wherein the first pins 311 are electrically connected to a power supply unit by a lead (or a wire), wherein the power supply unit provides power for the first heating element 31, and the first heating element 31 converts electrical energy into thermal energy and heats the light-transmitting region 101 of the first lens 11 in a direct contact manner. It can be understood that the first heating element 31 has high light transmittance, and the first pin 311 of the first heating element 31 is retracted from the light transmission region 101, so as to ensure the optical performance of the light transmission region 101 of the first lens 11. Especially for the first lens 11 with a larger size, the light-passing area 101 of the first lens 11 can be completely or completely heated, so that the defogging or moisture diffusion acceleration effect of the light-passing area 101 is satisfied.

It can be understood that the power supply unit can always provide power to the first heating element 31, so that the first heating element 31 can continuously and stably generate a certain temperature to continuously heat the first lens, and the first lens 11 can be always maintained at a certain temperature, thereby preventing the surface of the first lens from fogging or frosting.

That is, the first heating element 31 extends from the light-transmitting region 101 to the non-light-transmitting region 102, and the first pin 311 is formed in the non-light-transmitting region 102, so that the installation is facilitated and the structural rationality is ensured.

Optionally, the first heating element 31 is further disposed in the non-light-transmitting region 102 of the first lens 11 to heat the light-transmitting region 101 and the non-light-transmitting region 102 of the first lens 11 at the same time. Alternatively, the first heating element 31 may be disposed only in a partial region or all regions of the light-transmitting region 101, and heat can be diffused to all regions of the light-transmitting region 101 and the non-light-transmitting region 102, and effects of accelerating dissipation of surface-attached moisture or preventing fogging can be achieved, without being limited thereto.

Further, the heating element 30 further comprises at least one second heating element 32, wherein the second heating element 32 is disposed in the non-light-transmitting area 102 of the first lens 11 for directly contacting or thermally radiating the non-light-transmitting area 102 of the first lens 11, so that the non-light-transmitting area 102 of the first lens 11 is heated directly by contact or thermally radiating, and the heat can diffuse into the light-transmitting area 101, thereby achieving the effects of accelerating dissipation of surface-attached moisture or preventing surface fogging.

Preferably, the second heating element 32 is implemented as a heating wire, such as a metal or alloy material, such as silver wire, copper wire, iron chromium wire, chromium nickel, etc., wherein the heating wire material may also be conductive paste, conductive silver paste, conductive carbon paste, etc. The second heating element 32 is selected and arranged on the surface of the non-light-transmitting area 102 of the first lens 11 by silk-screen printing or dispensing. The second heating element 32 has at least one second pin 321, wherein the second pin 321 is connected to a power supply unit through a lead (or a wire), wherein the power supply unit provides power for the second heating element 32, and the second heating element 32 converts the power into heat and transmits the heat to the non-light-transmission region 102 of the first lens 11 in a direct contact or heat radiation manner, so as to heat the first lens 11.

Accordingly, the power supply unit can always provide power to the second heating element 32, so that the second heating element 32 can continuously and stably generate a certain temperature to continuously heat the first lens 11, and the first lens 11 can be always maintained at a certain temperature, thereby preventing the surface of the first lens from fogging or frosting. Optionally, the first heating element 31 and the second heating element 32 can be connected to the same power supply unit at the same time to achieve simultaneous control, and specifically, the first heating element 31 and the second heating element 32 may share two pins, wherein the two pins are connected to the same power supply unit through wires. Alternatively, the first heating element 31 and the second heating element 32 are respectively connected to different power supply units to realize separate control, and the first heating element 31 and the second heating element 32 may respectively have two pins (two first pins 311 and two second pins 321), where the two first pins 311 and the two second pins 321 are respectively connected to two different power supply units through wires.

It should be noted that the second heating element 32 is not disposed in the light-transmitting region 101 of the first lens 11, so as to prevent the optical performance of the first lens 11 from being affected.

Compared with the conventional defogging method, the heating element 30 of the optical device 100 can be directly disposed on the surface of the light-transmitting region 101 or the non-light-transmitting region 102 of the first lens 11, so that the power consumption for defogging or accelerating the process of dispersing moisture is less and the cost is lower.

As shown in fig. 2A, the light transmission region 101 of the first lens 11 further includes an outer light transmission region 1011 and an inner light transmission region 1012, wherein the outer light transmission region 1011 is located on an outer surface (e.g., a convex surface) of the light transmission region 101 of the first lens 11, and the inner light transmission region 1012 is located on an inner surface (e.g., a convex surface) of the light transmission region 101 of the first lens 11. The non-light-transmitting area 102 of the first lens 11 includes a side non-light-transmitting area 1021 and a bottom non-light-transmitting area 1022, where the side non-light-transmitting area 1021 is located on a side surface (e.g., a circular side surface) of the non-light-transmitting area 102 of the first lens 11, and the bottom non-light-transmitting area 1022 is located on a peripheral bottom surface (e.g., a circular bottom surface) of an inner surface of the non-light-transmitting area 102 of the first lens 11 or a peripheral bottom surface of the inner surface.

Alternatively, as shown in fig. 2B, the first lens 11 is implemented as a convex-concave structure from the outer surface to the inner surface. Alternatively, as shown in fig. 2C, the first lens 11 is formed to have a concave-convex structure from the outer surface to the inner surface. Alternatively, as shown in fig. 2D and 2E, the first lens 11 is formed in a biconvex structure from the outer surface to the inner surface. Alternatively, as shown in fig. 2F, the first lens 11 is implemented as a double concave structure from the outer surface to the inner surface. As shown in fig. 2B, 2C, 2D, and 2F, the outer light-transmitting region 1011 of the first lens 11 is located in the middle of the outer surface of the first lens 11, wherein the periphery of the outer surface of the first lens 11 is supported against the wall of the lens barrel 20 and forms the non-light-transmission area 102, or the periphery of the outer surface of the first lens 11 may be fixed by at least one fixing member to form the non-light-transmitting region 102, wherein the fixing element is a pressing ring, or the periphery of the outer surface of the first lens 11 can be fixed by the pressing ring, or the periphery 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, wherein the periphery of the outer surface of the first lens 11 is supported against the inner pressing ring, the periphery of the outer surface of the first lens 11 is the non-light-transmitting region 102. Or the periphery of the outer surface of the first lens 11 is fixed by an outer pressing ring, wherein the outer pressing ring is screwed on the outer wall of the lens barrel 20, and the periphery of the outer surface of the first lens 11 is supported against the outer pressing ring, so that the periphery of the outer surface of the first lens 11 is the non-light-transmission area 102. The non-light-transmitting area 102 is formed by bearing the periphery of the inner surface of the first lens 11 against the wall of the lens barrel 20, or by bearing the periphery of the inner surface of the first lens 11 against a spacer such as a spacer or a washer, or by directly bearing the periphery of the inner surface of the first lens 11 against the periphery of the adjacent lens inside the first lens 11, without limitation.

That is, the non-light-transmitting region 102 includes a peripheral region located on the outer surface of the first lens 11, a side surface region located on the first lens 11, and a peripheral bottom surface located on the inner surface of the first lens 11. It is understood that the second heating element 32 or the pins (the first pin 311 or the second pin 312) can be disposed in the non-light-transmitting area 102 at one or more positions selected from a peripheral area on the outer surface of the first lens 11, a side surface area of the first lens 11, and a peripheral bottom surface on the inner surface of the first lens 11. As shown in fig. 2E, the outer light-transmitting area 1011 of the first lens 11 is located on the outer surface of the first lens 11, and the non-light-transmitting area of the first lens 11 includes a side surface area located on the first lens 11 and a peripheral bottom surface located on the inner surface of the first lens 11. Accordingly, the position where the second heating element 32 or the pins (the first pin 311 or the second pin 312) can be disposed in the non-light-transmitting area 102 is selected from one or more of a side surface area of the first lens 11 and a peripheral bottom surface of the inner surface of the first lens 11, which is not limited herein.

It can be understood that after the first lens 11 is mounted on the lens barrel 20, neither the outer light-transmitting area 1011 nor the inner light-transmitting area 1012 is blocked by the lens barrel 20 for transmitting light. The side non-light-transmitting area 1021 and the bottom non-light-transmitting area 1022 are both blocked by the lens barrel 20 and cannot transmit light.

Preferably, the first heating element 31 is arranged in the outer light-transmitting region 1011, wherein the first heating element 31 substantially completely covers the outer light-transmitting region 1011. The first heating element 31 extends to two sides of the side non-light-transmitting area 1021 and forms two symmetrical and mutually separated first pins 311, that is, the two first pins 311 are respectively arranged at two sides of the side non-light-transmitting area 1021 and are electrically connected with the first heating element 31, so that 180-degree symmetrical access of leads is satisfied, and the first heating element 31 generates heat uniformly. Alternatively, the two first pins 311 may be asymmetrically arranged in the non-light-transmitting region of the lens 10, and uniform heating of the first heating element 31 may also be achieved, which is not limited herein. It can be seen that, since the first heating element 31 substantially completely covers the first lens 11, the first lens 11 can be uniformly heated, that is, the effect of accelerating the dissipation of moisture or defogging attached to the surface of the first lens 11 is achieved, and the lens 10 in the optical device 100 is uniformly heated, the optical axis of the lens 10 is not easily deviated from the geometric central axis, so as to ensure the performance index and the imaging quality of the optical device 100.

As shown in fig. 3, further, the first leads 311 are implemented as an arc structure attached to the side non-light-transmitting area 1021, wherein two of the first leads 311 are separated from each other and do not contact each other to prevent short circuit, wherein the arc length of the first leads 311 is shorter than the half perimeter of the first lens 11, and the width of the first leads 311 is smaller than the width of the side non-light-transmitting area 1021.

In the present embodiment, the first heating element 31 is extended to the contact edge of the upper side position of the side non-light-transmitting region 1021 and the light-transmitting region 1011. Alternatively, the first heating element 31 may be extended to cover a middle position of the side non-light-transmitting region 1021. Alternatively, the first heating element 31 may be extended to cover a lower side position of the side non-light-transmitting region 1021.

It can be understood that the two first pins 311 have a certain arc length and width, so that the first heating element 31 substantially meets the requirement of any angle access of the lead (or wire), thereby reducing the installation difficulty.

It should be noted that the position of the first pin 311 in the side non-light-transmitting area 1021 can be preset and adjusted. In other words, the first pin 311 may be preset to be located at an upper side position of the side non-light-transmitting area 1021 and adjacent to the outer light-transmitting area 1011, but not adjacent to the bottom non-light-transmitting area 1022, wherein the first heating element 31 is not disposed in the side non-light-transmitting area 1021. Optionally, the first heating element 31 extends to cover a middle position of the side non-light-transmitting region 1021, wherein the first pin 311 can be preset to be located at the middle position of the side non-light-transmitting region 1021, i.e. not adjacent to the outer light-transmitting region 1011 and not adjacent to the bottom non-light-transmitting region 1022. Optionally, the first heating element 31 extends to cover the lower position of the side non-light-transmitting region 1021, wherein the first pin 311 can be preset to be located at the lower position of the side non-light-transmitting region 1021 and adjacent to the bottom non-light-transmitting region 1022, but not adjacent to the outer light-transmitting region 1011. Alternatively, the first pin 311 may be preset to be located in the side non-light-transmitting area 1021 and have the same width as the side non-light-transmitting area 1021, that is, the first pin 311 is adjacent to both the outer light-transmitting area 1011 and the bottom non-light-transmitting area 1022. It is known to those skilled in the art that the predetermined position or shape and size of the first pin 311 can be adjusted arbitrarily to adapt to the optical device 100 with different structural shapes, so as to meet the requirement of accessing the lead at any angle and reduce the difficulty of installation, which is not limited herein.

As shown in fig. 4, in the first modified embodiment of the present preferred embodiment, the first lead 311 is implemented as a one-dot structure. The two first pins 311 may be respectively preset at any position of the side non-light-transmitting area 1021 and not overlap with each other. Further, the first pin 311 may be preset to be located at an upper side position of the side non-light-transmitting area 1021 and adjacent to the outer light-transmitting area 1011, or the first pin 311 may be preset to be located at a middle position of the side non-light-transmitting area 1021, or the first pin 311 may be preset to be located at a lower side position of the side non-light-transmitting area 1021 and adjacent to the bottom non-light-transmitting area 1022, and so on, which are not limited herein.

In a second variant of this embodiment, the first heating element 31 is arranged in the inner light-transmitting region 1012, wherein the first heating element 31 substantially completely covers the inner light-transmitting region 1012. The first heating element 31 extends to two sides of the bottom non-light-transmitting area 1022 and forms two symmetrical and mutually separated first pins 311, that is, the two first pins 311 are respectively arranged at two sides of the bottom non-light-transmitting area 1022 and electrically connected with the first heating element 31. It can be seen that the first heating element 31 can substantially completely cover the first lens 11, so that the first lens 11 can be uniformly heated, thereby achieving the effect of accelerating the dissipation of moisture or defogging attached to the surface of the first lens 11, and ensuring that the lens 10 in the optical device 100 is uniformly heated, and the optical axis of the lens 10 is not easily deviated from the geometric central axis, thereby ensuring the performance index and the imaging quality of the optical device 100.

Accordingly, the first lead 311 may be implemented as an arc structure or a point structure. The first heating element 31 can be extended to the contact edge of the bottom non-light-transmitting region 1022 and the inner light-transmitting region 1012, or the first heating element 31 can be extended to cover a part or all of the bottom non-light-transmitting region 1022. Accordingly, the first lead 311 can be disposed in the middle or both sides of the bottom non-light-transmitting region 1022, or at any position without overlapping with each other, which is not limited herein.

It is understood that the first heating element 31 may be disposed only in the outer light-transmitting region 1011 of the first lens 11. The first heating element 31 may be disposed only in the inner light-transmitting region 1012 of the first lens 11. The first heating element 31 may be disposed in both the outer light-transmitting region 1011 and the inner light-transmitting region 1012 of the first lens 11. Further, the first heating element 31 may also be selectively disposed in a partial region or a whole region of the side non-light-transmitting region 1021 or the bottom non-light-transmitting region 1022 of the first lens 11, which is not limited herein.

Alternatively, the first pins 311 may also be implemented as an arc structure or a combination structure of point structures, for example, the first pins 311 on one side are point structures, the first pins 311 on the other side are arc structures, and the like, which is not limited herein.

As shown in fig. 10, further, the second heating element 32 is disposed in the bottom non-light-transmitting area 1022 of the first lens 11, wherein the second heating element 32 is preferably implemented as a circular ring-shaped structure fitting to the bottom non-light-transmitting area 1022, and the width of the second heating element 32 is smaller than the width of the bottom non-light-transmitting area 1022. It is understood that the second heating element 32 can be disposed at a position near the outer diameter (i.e., outer circumference position), or at the center, or near the inner diameter (i.e., inner circumference position), or at all the regions of the bottom non-light-transmitting region 1022 of the first lens 11, so as to mount the second heating element 32 at different positions of the bottom non-light-transmitting region 1022 of the first lens 11, and provide more optional positions or angles for the access leads, thereby reducing the difficulty of mounting, and is not limited herein.

Alternatively, the width of the second heating element 32 may be substantially equal to the width of the bottom non-light-transmitting region 1022, i.e., the second heating element 32 substantially completely covers the entire region of the bottom non-light-transmitting region 1022. At this time, all the areas of the bottom non-light-transmitting area 1022 of the first lens 11 can be uniformly heated, and the effects of defogging or accelerating dispersion of moisture are better, and it is ensured that the lens 10 in the optical device 100 is uniformly heated, and the optical axis of the lens 10 is not easily deviated from the geometric central axis, so as to ensure the performance index and the imaging quality of the optical device 100.

In this embodiment, the second heating element 32 is disposed in a symmetrical structure, wherein two second pins 321 are respectively symmetrically located on two sides of the second heating element 32, that is, the two second pins 321 are symmetrically disposed at 180 °, so that the leads are symmetrically connected to two sides of the second heating element 32 at 180 °, the second heating element 32 can uniformly generate heat, and the lens 10 in the optical device 100 is uniformly heated, and the optical axis of the lens 10 is not easily deviated from the geometric central axis. Optionally,. Alternatively, the two second pins 311 may be asymmetrically disposed on the second heating element, and uniform heating of the second heating element 32 may also be achieved, which is not limited herein.

As shown in fig. 5A to 5C, the second heating element 32 is preferably implemented as a wavy annular structure, wherein the second heating element 32 has a plurality of annular protrusions 322, and wherein the protrusions 322 are sequentially connected to form an annular structure. Further, the two second pins 321 can be disposed at any position of the second heating element 32 and do not overlap with each other, that is, the radian of the interval between the two second pins 321 may be less than or equal to 180 ° but does not overlap with each other.

It is worth mentioning that the number of the protrusions 322 is preset to change the resistance of the second heating element 32, so as to adjust the heating power of the second heating element 32 under the same voltage or current. That is, if the number of the protrusions 322 is increased, the interval between the adjacent protrusions 322 is decreased, and the total length of the second heating element 32 is increased, thereby increasing the resistance of the second heating element 32. If the number of the protrusions 322 is decreased, the distance between the adjacent protrusions 322 is increased, and the total length of the second heating element 32 is decreased, so that the resistance of the second heating element 32 is decreased.

As shown in fig. 5A, the distance between the adjacent protrusions 322 of the second heating element 32 is preset to a normal distance D1, wherein the resistance value of the second heating element 32 is the first resistance value. As shown in fig. 5B, the distance between the adjacent protrusions 322 of the second heating element 32 is preset to a larger distance D2, wherein the resistance value of the second heating element 32 is a second resistance value. As shown in fig. 5C, the distance between the adjacent protrusions 322 of the second heating element 32 is preset to a smaller distance D3, wherein the resistance value of the second heating element is a third resistance value. It can be seen that the first resistance value is greater than the second resistance value, wherein the third resistance value is greater than the first resistance value. It will be understood by those skilled in the art that the distance between adjacent protrusions 322 can be arbitrarily set, wherein the number of protrusions 322 is not limited.

As shown in fig. 6A and 6B, in the third modified embodiment of the present embodiment, the second heating element 32 is implemented as a multi-ring structure in which a plurality of heating elements are connected in parallel. Optionally, the second heating element 32 includes a first element 323, a second element 324, and a third element 325, wherein the first element 323, the second element 324, and the third element 325 are sequentially and annularly juxtaposed in the bottom non-light-transmitting area 1022 of the first lens 11, and are connected in parallel with each other. That is, the first element 323, the second element 324, and the third element 325 are implemented as three looped parallel-connected heating wires, wherein the second heating element 32 is in a three-loop configuration with three heating wires connected in parallel. The diameter of the first ring element 323 is larger than the diameter of the second ring element 324, wherein the diameter of the second ring element 324 is larger than the diameter of the third ring element 325, and wherein the two pins 321 are symmetrically disposed on both sides of the first element 323. It can be seen that the second heating element 32 formed by the first element 323, the second element 324 and the third element 325 in parallel effectively reduces the resistance of the second heating element 32, so that the second heating element 32 can meet the requirement of providing heat with larger power under the condition that the voltage is limited to be smaller.

As shown in fig. 6B, the second heating element 32 may further include a fourth element 326, wherein the fourth element 326 is parallel connected to the third element 325, so that the second heating element 32 has a four-ring structure with four parallel heating wires, thereby further changing the resistance of the second heating element 32. It will be understood by those skilled in the art that, in order to change the resistance value of the second heating element 32 to meet different power requirements, the second heating element 32 can also be implemented as a two-ring structure with two heating wires connected in parallel, or a five-ring structure with five heating wires connected in parallel, or a six-ring structure, etc., without limitation.

As shown in fig. 7A and 7B, in a fourth modified embodiment of the present embodiment, the second heating element 32 is implemented as a multi-ring structure in which a plurality of heating elements are connected in series. The difference from the third modified embodiment is that the second heating element 32 is implemented in a multi-ring structure in which two, three, four, or more heating wires are sequentially connected in series, so that the resistance value of the second heating element 32 is changed. As shown in the drawings, the first element 323, the second element 324 and the third element 325 of the second heating element 32 are sequentially connected in series, wherein the second heating element 32 has a three-ring structure formed by connecting three heating wires in series, and the upper and lower sides of the second heating element 32 are respectively provided with a series port 320 so that the outermost heating wire and the innermost heating wire are connected in series. As shown in the figure, the second heating element 32 is a five-ring structure formed by connecting five heating wires in series. It will be understood by those skilled in the art that the second heating element 32 can also be implemented as a seven-ring structure with seven heating wires connected in series, or as a nine-ring structure or other odd-numbered ring structures to adjust the resistance of the second heating element 32.

It can be understood that the resistance values at other positions than the position of the serial port 320 of the second heating element 32 are the same, so that the heating efficiencies of the second heating element 32 in the same arc of the ring shape are substantially the same, and the second pins 321 can be symmetrically arranged to make the bottom non-light-transmitting area 1022 of the first lens 11 heated uniformly.

As shown in fig. 8, in a fifth modified embodiment of this embodiment, the second heating element 32 is implemented as an arc structure extending in one direction, and the arc is less than 360 °, wherein two ends of the second heating element 32 are not in contact and a gap 327 is formed between the two ends, wherein two second pins 321 are respectively disposed at two ends of the second heating element 32, so that the second heating element 32 generates heat uniformly.

In a sixth variant of this embodiment, as shown in fig. 9, the second heating element 32 includes a wide heating element 328 and a narrow heating element 329, wherein the narrow heating element 329 is integrally connected between two ends of the wide heating element 328 to form a ring structure with different widths, wherein the width of the narrow heating element 328 is smaller than that of the second heating element 32, the wide heating element 328 is a heating wire with a larger width, and the narrow heating element 329 is a heating wire with a smaller width. The two second pins 321 are disposed at two ends of the wide heating element 328, so that the second heating element 32 generates heat uniformly, and the bottom non-light-transmitting area 1022 of the first lens 11 is heated uniformly. It is understood that the installation position of the second pin 321 is fixed, and thus, the access position of the lead wire is predetermined when the second heating element 32 is installed, so as to prevent a wire connection failure.

It can be seen that the shape of the second heating element 32 can be arbitrarily set, and is less limited by the structure of the optical device 100, so as to meet the defogging requirements of optical devices with different structural types.

In a seventh modified embodiment of this embodiment, the second heating element 32 is disposed in the side non-light-transmitting area 1021 of the first lens 11 in a manner similar to the manner in which the second heating element 32 is disposed in the bottom non-light-transmitting area 1022 of the first lens 11, which is not described in detail herein. That is, the second heating element 32 can be disposed at an upper position, a middle position, or a lower position of the side non-light-transmitting region 1021, without being limited thereto. The second heating element 32 is implemented as a wavy annular structure with a different number of the protrusions 322. Alternatively, the second heating element 32 may be implemented as a multi-ring structure formed by juxtaposing two, three, four, five or more heating wires, or the second heating element 32 may be implemented as a multi-ring structure formed by serially connecting three, five, seven or more heating wires with odd numbers, wherein the two second pins 321 may be symmetrically disposed at two ends of the second heating element 32, or disposed at any position or angle of the second heating element 32 without overlapping each other. Alternatively, the second heating element 32 is implemented as a one-way extending arc structure, or the second heating element 32 is implemented as a ring structure with different widths, which is not limited herein.

It should be noted that the second heating element 32 may be disposed only in the side non-light-transmitting region 1021 of the first lens 11, or the second heating element 32 may also be disposed in the bottom non-light-transmitting region 1022 of the first lens 11, or the second heating element 32 may also be disposed in both the side non-light-transmitting region 1021 and the bottom non-light-transmitting region 1022 of the first lens 11, which is not limited herein.

It can be seen that the light-transmitting region 101 and the non-light-transmitting region 102 of the first lens 11 can be arranged only with the first heating element 31 without arranging the second heating element 32 in the non-light-transmitting region 102, wherein the first pin 311 is disposed in the non-light-transmitting region 102. Alternatively, the first heating element 31 may be disposed in both the light transmitting region 101 and the side non-light transmitting region 1021, with the second heating element 32 disposed in the bottom non-light transmitting region 1022. Or the first heating element 31 may be disposed in both the light-transmitting region 101 and the bottom non-light-transmitting region 1022, wherein the second heating element 32 is disposed in the side non-light-transmitting region 1021. Alternatively, the first heating element 31 is disposed in the outer light-transmitting region 1011 or the inner light-transmitting region 1012 of the light-transmitting region 101, wherein the second heating element 32 is disposed in the side non-light-transmitting region 1021 or the bottom light-transmitting region 1022 of the non-light-transmitting region 102, without being limited thereto.

Further, the present embodiment also provides a method for manufacturing the optical device, which includes the following steps:

A. providing the lens barrel 20 and the lens 10, wherein the lens 10 is mounted in the mounting cavity of the lens barrel 20; and

B. the heating element 30 is disposed on the surface of the first lens 11 on the near object side in a manner capable of being electrified to generate heat so as to heat the first lens 11, wherein the heating element 30 is used for connecting a power supply unit and generating heat to heat the lens 10 so as to accelerate dissipation of moisture adhering to the surface, and prevent fogging or frosting of the surface of the first lens 11.

Wherein the step B comprises a step B1: the first heating element 31 is disposed in the light-transmitting region 101 of the first lens 11, and the first lead 311 is disposed in the non-light-transmitting region 102 of the first lens 11 in a mutually separated manner, wherein the first lead 311 is electrically connected to the first heating element 31.

It also includes a step C: at least two lead wires are respectively extended from the first pin 311 to the power supply unit.

In this embodiment, the method further includes a step C: the second heating element 32 is disposed in the non-light-transmitting region 102 of the lens 10.

In this embodiment, an ITO film is coated on the inner surface or the outer surface of the light transmission region 101 of the lens 10.

In the present embodiment, the shape of the second heating element 32 is preset according to the resistance value of the second heating element 32.

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;

2. The optical device of claim 1, wherein the heating element comprises at least a first heating element and at least two first pins electrically connected to the first heating element, wherein the first heating element has optical transparency, wherein the first heating element is disposed in an optical transmission region of the lens, wherein the at least two first pins are disposed in the non-optical transmission region of the lens separately from each other.

3. The optical device according to claim 2, wherein two of the first pins are disposed on both sides of the non-light-transmitting region of the lens in such a manner that the first heating elements uniformly heat.

4. The optical device of claim 2, wherein the first pin is implemented as selected from a group: one of an arc structure, a dot structure, and a combination of an arc structure and a dot structure.

5. The optical device according to claim 2, wherein the first pin is disposed at the non-light-transmitting area of the lens at a position selected from a group consisting of: one of an upper position, a middle position, and a lower position.

6. The optical device of claim 2, wherein the first heating element is further disposed in the non-light-passing region of the lens.

7. The optical device according to claim 2, wherein a first heating element is arranged at a light passing region of the lens selected from the group of: an inner surface, an outer surface, and one of the inner surface and the outer surface.

8. The optical device according to any one of claims 1 to 7, wherein the first heating element is implemented as an ITO film.

9. The optical device according to any one of claims 1 to 7, wherein the heating element comprises at least a second heating element and at least a second pin, wherein the second heating element is arranged in the non-light-transmitting region of the lens, wherein the at least second pin is provided separately from each other to the second heating element.

10. The optical device of claim 9, wherein the second heating element is covered in a portion of the non-light-transmitting region.

11. The optical device of claim 9, wherein the second heating element is coated over the entire area of the non-light transmitting region.

12. The optical device of claim 9, wherein two of the second pins are disposed on both sides of the second heating element in such a manner that the second heating element generates heat uniformly.

13. The optical device of claim 9, wherein the second heating element has a plurality of circumferential rows of protrusions, wherein the number of protrusions is preset according to a resistance value of the second heating element.

14. The optical device of claim 9, wherein the second heating element is implemented as a multi-loop structure of multiple heating elements connected in parallel.

15. The optical device of claim 14, wherein the multi-ring structure is selected from a group consisting of: one of two-ring, three-ring, four-ring and five-ring.

16. The optical device of claim 9, wherein the second heating element is implemented as a multi-ring structure of a plurality of heating elements connected in series.

17. The optical device of claim 16, wherein the multi-ring structure is selected from a group consisting of: one of tricyclic, pentacyclic and heptacyclic.

18. The optical device according to claim 9, wherein the second heating element is implemented as an arc structure extending unidirectionally, wherein two of the second pins are respectively disposed at both ends of the second heating element.

19. The optical apparatus of claim 9, wherein the second heating element comprises a wide heating element and a narrow heating element, wherein two ends of the wide heating element are connected to two ends of the narrow heating element to form a ring structure attached to the non-light-transmitting region, and two of the second pins are respectively disposed at two ends of the wide heating element.

20. The optical device of claim 9, wherein the second heating element is disposed at a location of the non-light transmitting region of the lens selected from a group consisting of: one or more combinations of side surfaces, peripheral regions of the inner surface, and peripheral regions of the outer surface.

21. The optical apparatus of claim 9, wherein the second heating element is implemented as a heating wire.

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

A. providing a lens barrel and at least one lens, wherein the lens is arranged in a mounting cavity of the lens barrel; and

23. The method for manufacturing an optical device according to claim 22, wherein the step B includes a step B1: at least one first heating element is arranged in a light-transmitting area of the lens, and at least two first pins are arranged in a mutually separated mode in the non-light-transmitting area of the lens, wherein the first pins are electrically connected with the first heating element.

24. The method of claim 23, further comprising a step C: at least two leads are respectively extended from the first pin to a power supply unit.

25. The method for manufacturing an optical device according to claim 22 or 23, wherein the step B includes a step B2 of: and arranging at least one second heating element in the non-light-transmission area of the lens.

26. The method of manufacturing an optical device according to claim 23, wherein the first heating element is implemented as an ITO film.

27. The method of manufacturing an optical device according to claim 25, wherein a shape of the second heating element is preset according to a resistance value of the second heating element.