CN114556901A - Lens assembly and shooting equipment with same - Google Patents
Lens assembly and shooting equipment with same Download PDFInfo
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- CN114556901A CN114556901A CN202080073559.0A CN202080073559A CN114556901A CN 114556901 A CN114556901 A CN 114556901A CN 202080073559 A CN202080073559 A CN 202080073559A CN 114556901 A CN114556901 A CN 114556901A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/55—Details of cameras or camera bodies; Accessories therefor with provision for heating or cooling, e.g. in aircraft
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
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- Engineering & Computer Science (AREA)
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Abstract
A lens assembly and a photographing apparatus having the same, wherein the lens assembly includes: the light-transmitting device comprises a shell, wherein an accommodating cavity is formed in the shell, and a light-transmitting hole is formed in the shell; the lens module is arranged in the accommodating cavity and comprises a lens, and the light hole is positioned on the front side of the lens; the glass subassembly sets up in light trap department and with the pore wall sealing connection of light trap, the glass subassembly includes: the glass body is provided with an avoidance area for avoiding the field range of the lens; the transparent conducting layer at least partially covers the avoidance area of the glass body; the first electrode and the second electrode are arranged on the glass body and located outside the avoidance area, and the first electrode and the second electrode can be connected with electricity through the transparent conducting layer to heat the glass body. Above-mentioned camera lens subassembly can reach defogging/anti-fogging effect in the short time to then local or the overheated condition of whole can not appear with heating power control in reasonable scope, effectively avoid glass body or camera lens to take place to explode and split.
Description
The present disclosure claims priority to the chinese patent application filed on 09.10.2020 of china patent office, having application number 202022229537.9 entitled "lens assembly and photographing device having the same," the entire contents of which are incorporated by reference in the present disclosure.
The application relates to the technical field of lens devices, in particular to a lens assembly and shooting equipment with the same.
When a shooting device (such as a pan-tilt camera, a surveillance camera, etc.) is in a use scene with high humidity, temperature changes easily cause fogging phenomena to occur on the inner and outer sides of a lens and lens protection glass of the shooting device. Fog on the outer side of the lens protective glass can be wiped off or quickly and naturally dissipated, fog on the inner sides of the lens and the lens protective glass cannot be wiped, the natural dissipation speed is low, and normal use of shooting equipment is seriously affected.
In prior art, some shooting equipment set up defogging glass in the camera lens front side, and defogging glass includes glass panels and heating structure, and heating structure is the annular and is located the periphery of glass panels towards the side of camera lens, can heat glass panels after the heating structure circular telegram to carry out the defogging.
In the course of research on the existing defogging lens, the inventors found that at least the following problems existed:
above-mentioned heating structure carries out the direct heating to glass panels's periphery, and the heat conducts the middle part to glass panels again, and this kind of mode heating is not even enough, and glass panels middle part intensification is slow to lead to defogging speed slower. If the heating is accelerated by increasing the power of the heating structure, the periphery of the glass panel is easily overheated, and especially in a low-temperature environment, the temperature difference is too large, so that the risk of cracking the glass panel and even the lens is increased.
BRIEF SUMMARY OF THE PRESENT DISCLOSURE
The embodiment of the application provides a lens assembly and shooting equipment with the same.
In a first aspect, an embodiment of the present application provides a lens assembly, including: the light-transmitting device comprises a shell, wherein an accommodating cavity is formed in the shell, and a light-transmitting hole is formed in the shell; the lens module is arranged in the accommodating cavity and comprises a lens, and the light hole is positioned at the front side of the lens; the glass subassembly sets up in light trap department and with the pore wall sealing connection of light trap, the glass subassembly includes: the glass body is provided with an avoidance area for avoiding the field range of the lens; the transparent conducting layer at least partially covers the avoidance area of the glass body; the first electrode and the second electrode are arranged on the glass body and located outside the avoidance area, and the first electrode and the second electrode can be connected with electricity through the transparent conducting layer to heat the glass body.
Furthermore, the first electrode and the second electrode are respectively arranged at two opposite sides outside the avoidance area, the transparent conducting layer at least covers the part of the glass body between the first electrode and the second electrode, and the transparent conducting layer is electrically connected with the first electrode and the second electrode.
Further, the transparent conductive layer includes a conductive film formed on the surface of the glass body through a plating process.
Further, the conductive film includes a metal ion film or a semiconductor film.
Further, the first electrode and the second electrode are symmetrically arranged with respect to the center of the glass body; alternatively, the first electrode and the second electrode are both disposed along an edge of the glass body.
Furthermore, the lens module further comprises a circuit board, the lens assembly further comprises an electric conduction structure, and the first electrode and the second electrode are electrically connected with the circuit board through the electric conduction structure.
Furthermore, the electric conduction structure comprises two first conductive transmission pieces, the first electrode and the second electrode are positioned on the inner side surface of the glass body, the first ends of the two first conductive transmission pieces are respectively electrically connected with the first electrode and the second electrode, and the second ends of the two first conductive transmission pieces are respectively electrically connected with the circuit board.
Furthermore, a first matching area independent of the avoiding area is arranged on the outer side face of the glass body and connected with the inner side of the shell, the first matching area is arranged along the edge of the glass body, the first electrode and the second electrode are arranged on the inner side face of the glass body, and the positions of the first matching area and the second matching area on the outer side face of the glass body correspond to each other.
Furthermore, a second matching area independent of the avoiding area is arranged on the inner side face of the glass body, the second matching area is connected with the outer side of the shell, and at least part of the first electrode and at least part of the second electrode are located between the second matching area and the avoiding area.
Furthermore, the shell is provided with two spaced metal conduction parts, the electric conduction structure comprises two metal conduction parts and two second conductive transmission parts, the first ends of the two second conductive transmission parts are respectively and electrically connected with the two metal conduction parts, the second ends of the two second conductive transmission parts are respectively and electrically connected with the circuit board, a third matching area independent of the avoiding area is arranged on the glass body, at least part of the first electrode and at least part of the second electrode are located in the third matching area, and when the third matching area is connected with the shell, the first electrode and the second electrode are respectively and electrically connected with the two metal conduction parts.
Furthermore, an installation step is arranged on the hole wall of the light hole, the glass assembly is installed at the installation step, the bottom surface of the installation step is bonded with the glass assembly, and the side surface of the installation step is in contact with or in clearance fit with the edge of the glass assembly.
Furthermore, the side surface of the installation step is provided with at least one positioning surface, and the edge of the glass component is provided with a positioning matching surface matched with the positioning surface.
Further, still include: the dustproof ring is arranged between the lens and the glass component, and the inner wall of the dustproof ring, the lens and the glass component form a sealed cavity together.
In a second aspect, an embodiment of the present application provides a shooting device including the lens assembly described above.
After the lens of lens subassembly and/or glass subassembly produced the fog, heat the glass body through switching on to first electrode, transparent conducting layer and second electrode to realize the defogging. Of course, the first electrode, the transparent conductive layer, and the second electrode may be energized before the temperature of the usage scene changes, and the glass body may be heated in advance to prevent the generation of the mist.
Because dodge the regional middle part that roughly is located the glass body, transparent conducting layer covers on dodging the region, can carry out the direct heating to dodging the region after transparent conducting layer circular telegram, thereby make the whole heating of glass body more even, under certain heating power, the glass body rapid heating is to the temperature that can defogging/prevent fogging, reach defogging/prevent fogging effect in the short time, and with heating power control in reasonable within range, then local or whole overheated condition can not appear, effectively avoid glass body or camera lens to take place to explode and split.
FIG. 1 is an exploded view of a lens assembly according to one embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of the lens assembly of FIG. 1 as applied to a pan-tilt camera;
FIG. 3 is a partial enlarged view of the lens assembly of FIG. 2;
FIG. 4 is a schematic view of a glass assembly of the lens assembly of FIG. 2;
FIG. 5 is a schematic view of another angled configuration of the glass assembly of FIG. 4;
FIG. 6 is a schematic view of the glass subassembly of FIG. 4 mated with a housing and a first conductive transmission member;
FIG. 7 is a schematic diagram of a glass assembly of a lens assembly according to another embodiment of the present application;
FIG. 8 is a schematic diagram of a glass assembly of a lens assembly according to another embodiment of the present application;
fig. 9 is a schematic structural view of the glass assembly of fig. 8 after being matched with the housing, the metal conductive part and the second conductive transmission member.
It is noted that the drawings are not necessarily to scale and are merely illustrative in nature and not intended to obscure the reader.
Description of reference numerals:
10. a housing; 11. an accommodating cavity; 12. a light-transmitting hole; 121. mounting a step; 1211. positioning the surface; 20. a lens module; 21. a lens; 30. a glass component; 31. a glass body; 311. an avoidance area; 312. a first mating area; 313. a second mating area; 314. a third mating area; 32. a first electrode; 33. a second electrode; 34. a conductive film; 35. positioning a matching surface; 41. a first conductive transmission member; 42. a metal conduction part; 43. a second conductive transmission member; 50. a dust ring; 60. sealing the cavity; 100. a fuselage.
In order to make the objects, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be described below in detail and completely with reference to the accompanying drawings of the embodiments of the present application. It should be apparent that the described embodiment is one embodiment of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.
It is to be noted that, unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. If the description "first", "second", etc. is referred to throughout, the description of "first", "second", etc. is used only for distinguishing similar objects, and is not to be construed as indicating or implying a relative importance, order or number of technical features indicated, it being understood that the data described in "first", "second", etc. may be interchanged where appropriate. If "and/or" is presented throughout, it is meant to include three juxtapositions, exemplified by "A and/or B" and including either scheme A, or scheme B, or schemes in which both A and B are satisfied. Furthermore, spatially relative terms, such as "above," "below," "top," "bottom," and the like, may be used herein for ease of description to describe one element or feature's spatial relationship to another element or feature as illustrated in the figures, and should be understood to encompass different orientations in use or operation in addition to the orientation depicted in the figures.
The embodiment of the application provides a lens assembly, and the lens assembly can be applied to various shooting equipment needing to have defogging and anti-fogging functions, such as a pan-tilt camera, a motion camera, a vehicle-mounted camera, a monitoring camera and the like, and can be even applied to conventional cameras and video cameras. The following description will be made in detail taking an example in which the lens assembly is applied to a pan-tilt camera.
Fig. 1 is an exploded view of a lens assembly according to an embodiment of the present application. Fig. 2 shows a schematic cross-sectional view of the lens assembly of fig. 1 applied to a pan-tilt camera. Fig. 3 shows a partially enlarged view of the lens assembly of fig. 2. Fig. 4 shows a schematic view of the inner side of the glass member 30 of the lens assembly of fig. 2.
As shown in fig. 1 to 4, the lens assembly includes a housing 10, a lens module 20, and a glass assembly 30. The housing 10 has a receiving cavity 11 therein. The housing 10 is provided with a light hole 12, and the light hole 12 is communicated with the accommodating cavity 11. The lens module 20 is disposed in the accommodating cavity 11. The lens module 20 includes a lens 21, and the light hole 12 is located at a front side of the lens 21. The glass assembly 30 is disposed at the light-transmitting hole 12 and is hermetically connected with the wall of the light-transmitting hole 12.
The glass assembly 30 includes a glass body 31, a transparent conductive layer, a first electrode 32, and a second electrode 33. The glass body 31 has an escape area 311 for escaping from the field of view of the lens 21. It can be understood that the avoiding region 311 faces the lens 21, the field of view of the lens 21 should be located in the avoiding region 311 at the position of the glass body 31, and there is no any obstruction in the avoiding region 311 that can block the lens 21. The transparent conductive layer at least partially covers the relief area 311 of the glass body 31. The first electrode 32 and the second electrode 33 are disposed on the glass body 31 and outside the avoidance region 311, thereby avoiding shielding the lens 21. The first electrode 32 and the second electrode 33 can be electrically connected through the transparent conductive layer, and the glass body 31 is heated after the electricity is applied.
When the lens 21 of the lens assembly and/or the glass assembly 30 generates fog, the first electrode 32, the transparent conductive layer and the second electrode 33 are electrified to heat the glass body 31, so as to realize defogging. Of course, the first electrode 32, the transparent conductive layer, and the second electrode 33 may be energized before the temperature of the usage scene changes, and the glass body 31 may be heated in advance to prevent the generation of the mist.
Because dodge regional 311 and roughly be located the middle part of glass body 31, transparent conducting layer covers on dodging regional 311, transparent conducting layer can carry out the direct heating to dodging regional 311 after the circular telegram, thereby make glass body 31 bulk heating more even, under certain heating power, glass body 31 heats fast to the temperature that can defogging/prevent fogging, reach defogging/prevent fogging effect in the short time, and with heating power control in reasonable range, then local or whole overheated condition can not appear, effectively avoid glass body 31 or camera lens 21 to take place to explode and split.
It should be noted that the heating power can be selected according to the size of the glass body 31, the specific material of the transparent conductive layer, and other factors, and it is sufficient to ensure that the temperature of the heated glass body 31 can reach the defogging/anti-fogging temperature and is not too high.
In addition, the lens assembly shown in fig. 1 and 2 is particularly applied to a pan-tilt camera. As shown in fig. 1 and 2, the pan-tilt camera includes a body 100 and a lens assembly provided on the body 100, and a housing 10 of the lens assembly is configured to be adapted to the body 100. Specifically, when the lens assembly is assembled with the body 100, the housing 10 may serve as a front case of the body 100. It will be understood by those skilled in the art that if the lens assembly is applied to other types of photographing apparatuses, the structure of the housing 10 of the lens assembly should also be adjusted according to the specific type of photographing apparatus. For example, when the lens assembly is applied to a video camera, the lens assembly of the video camera includes a lens 21 and a light guide tube sleeved on the lens 21, and the light guide tube serves as the housing 10.
In this embodiment, the glass assembly 30 is hermetically connected to the wall of the light hole 12, instead of the original lens protection glass. Of course, in other embodiments, the glass assembly 30 and the original lens protection glass may be disposed at the light-transmitting hole 12 at the same time, and the glass assembly 30 is located between the lens protection glass and the lens 21. However, this arrangement has a larger number of components than the present embodiment, and the double glazing provided on the front side of the lens 21 may affect the imaging effect of the lens 21.
As shown in fig. 1 and 4, in some embodiments of the present application, the first electrode 32 and the second electrode 33 are respectively disposed at two opposite sides of the outside of the avoiding region 311. The transparent conductive layer covers at least a portion of the glass body 31 between the first electrode 32 and the second electrode 33. The transparent conductive layer is electrically connected to the first electrode 32 and the second electrode 33. When energized, current flows from the first electrode 32 to the second electrode 33 or from the second electrode 33 to the first electrode 32, in the process, the current passes through the transparent conductive layer between the first electrode 32 and the second electrode 33. By providing the first electrode 32 and the second electrode 33 on opposite sides of the relief region 311, the distance over which current flows through the transparent conductive layer can be increased as much as possible, thereby increasing heat generation of the transparent conductive layer and further improving the heating effect on the glass body 31.
It should be noted that the first electrode 32 and the second electrode 33 are not limited to be disposed on two opposite sides of the avoiding region 311, and in other embodiments of the present application, the first electrode 32 and the second electrode 33 may be disposed in other manners as long as a space is ensured between the first electrode 32 and the second electrode 33. For example, the first electrode 32 is located at the side of the avoiding region 311, the second electrode 33 is located below the avoiding region 311, and when current flows between the first electrode 32 and the second electrode 33, the current can still flow through a part of the transparent conductive layer, so as to heat the glass body 31, but the heating effect is relatively poor compared with the manner in which the first electrode 32 and the second electrode 33 are located at the opposite sides of the avoiding region 311.
As shown in fig. 1 and 4, in some embodiments of the present application, a transparent conductive layer covers the entire side surface of the glass body 31, and the first electrode 32 and the second electrode 33 are connected to the transparent conductive layer, so that the first electrode 32, the second electrode 33 and the transparent conductive layer are electrically connected. Of course, in other embodiments, the transparent conductive layer may cover a portion of the glass body 31, and in this case, it is only necessary to ensure that the transparent conductive layer can cover the region between the first electrode 32 and the second electrode 33. In addition, the way of electrically connecting the first electrode 32 and the second electrode 33 with the transparent conductive layer is not limited to the above way, and the first electrode 32 and the second electrode 33 may be first disposed on the glass body 31, and then the transparent conductive layer may be covered between the first electrode 32 and the second electrode 33 or the whole side surface of the glass body 31, and the transparent conductive layer may be in contact with the first electrode 32 and the second electrode 33; or conducting through other middle conductive pieces.
Preferably, the transparent conductive layer includes a conductive film 34 formed on the surface of the glass body 31 through a plating process. The conductive film 34 is directly formed on the surface of the glass body 31 through a coating process, so that the conductive film 34 is combined with the glass body 31 more firmly, and the service life of the conductive film 34 is prolonged. It should be noted that the entire side surface of the glass body 31 may be coated, or a part of the glass body 31 where the transparent conductive layer is required to be disposed may be coated. Of course, the conductive film 34 may not be formed by the plating process, and in other embodiments, the conductive film 34 may be attached to the surface of the glass body 31.
The type of the conductive film 34 formed by the plating process may be various transparent films having conductive characteristics. For example, the conductive film 34 includes, but is not limited to, a metal ion film or a semiconductor film. The metal ion film can be an ITO metal conductive film, an AZO metal conductive film and the like. The semiconductor film may be a silicon conductive film or the like.
The type of the transparent conductive layer is not limited to the conductive film 34, and in other embodiments, the transparent conductive layer may have another structure that can be conductive and transparent. For example, the transparent conductive layer includes a layer structure formed of a resistance wire, a silver nanowire, a carbon nanowire, and the like, and the layer structure is covered on the glass body 31 to be heated by energization. Since these materials have small sizes and can reach the nanometer level, the formed layer structure can be regarded as transparent, and can not generate shielding to the lens 21.
As shown in fig. 1 and 4, in some embodiments of the present application, the first electrode 32 and the second electrode 33 are symmetrically disposed with respect to the center of the glass body 31, and at this time, the distance between the first electrode 32 and the second electrode 33 is relatively long, that is, the distance that the current flows through the transparent conductive layer between the first electrode 32 and the second electrode 33 is long, so that the heat generation of the transparent conductive layer is further increased, and the heating effect on the glass body 31 is improved. Of course, in other embodiments, the first electrode 32 and the second electrode 33 may be disposed asymmetrically.
As shown in fig. 1 and 4, in some embodiments of the present application, the first electrode 32 and the second electrode 33 are disposed along the edge of the glass body 31, so that the space between the first electrode 32 and the second electrode 33 can be increased as much as possible, and thus the heating region formed by the transparent conductive layer between the first electrode 32 and the second electrode 33 is sufficiently large, thereby improving the heating effect. If the first electrode 32 and the second electrode 33 are also symmetrically disposed with respect to the center of the glass body 31, the distance between the first electrode 32 and the second electrode 33 is the largest, the distance that the current flows through the transparent conductive layer is the longest, and the heat generation effect of the transparent conductive layer is the best. Of course, in other embodiments, at least one of the first electrode 32 and the second electrode 33 may not be disposed at the edge of the glass body 31, as long as the first electrode 32 and the second electrode 33 are ensured to be located outside the avoiding region 311.
In some embodiments, the lens module 20 further includes a circuit board, and the lens assembly further includes an electrically conductive structure, and the first electrode 32 and the second electrode 33 are electrically connected to the circuit board through the electrically conductive structure. The circuit board inside the lens module 20 is connected with the first electrode 32 and the second electrode 33, and the glass assembly 30 is powered through the circuit board without additionally arranging a power supply, so that the arrangement is more convenient. Of course, in other embodiments, a power source may be additionally added to supply power to the glass assembly 30 as long as the installation space allows.
Fig. 6 shows a schematic structural view of the glass assembly 30 of fig. 4 after being matched with the housing 10 and the first conductive transmission member 41.
As shown in fig. 6, in some embodiments of the present application, the electrically conductive structure includes two first conductive transmission members 41, the first electrode 32 and the second electrode 33 are located on the inner side surface of the glass body 31, first ends of the two first conductive transmission members 41 are electrically connected to the first electrode 32 and the second electrode 33, respectively, and second ends of the two first conductive transmission members 41 are electrically connected to the circuit board by soldering or the like. The first conductive transmission member 41 may be a conductive wire, a flexible conductive sheet, or other conductive transmission structures.
Through the design of the installation mode of the glass body 31 and the positions of the first electrode 32 and the second electrode 33, the two first conductive transmission members 41 can be smoothly guided to the circuit board, and the specific mode will be described in detail below in conjunction with the installation mode of the glass body 31 and the positions of the first electrode 32 and the second electrode 33.
Fig. 5 shows a schematic structural view of the outer side of the glass component 30 of fig. 4.
As shown in fig. 4 and 5, in some embodiments of the present application, the glass body 31 has a first fitting region 312 on the outer side surface thereof, which is independent of the avoiding region 311, the first fitting region 312 is connected to the inner side of the housing 10, and the glass assembly 30 is fixed to the housing 10 by the connection of the first fitting region 312 to the inner side of the housing 10. However, the surface of the housing 10 facing the lens 21 can be an inner surface and the surface of the housing 10 facing away from the lens 21 can be an outer surface, the "inner side of the housing 10" refers to the inner surface of the housing 10, and the first fitting region 312 is connected to the inner surface of the housing 10. As shown in fig. 6, at this time, the first electrode 32 and the second electrode 33 on the inner side surface of the glass body 31 are completely exposed in the accommodating cavity 11, and the first ends of the two first conductive transmission members 41 can be directly electrically connected to the first electrode 32 and the second electrode 33.
As shown in fig. 4 and 5, the first fitting region 312 is provided along the edge of the glass body 31. The first electrode 32 and the second electrode 33 are both disposed on the inner side of the glass body 31 at positions corresponding to the positions of the first fitting regions 312 on the outer side of the glass body 31. After the glass assembly 30 is assembled on the housing 10, the avoiding region 311 of the glass body 31 needs to be aligned with the lens 21, and the size of the avoiding region 311 needs to meet the requirement of the field range of the lens 21.
Assuming that the avoiding region 311 and the light transmitting hole 12 are both circular, the diameter of the glass body 31 is D1The diameter of the escape area 311 is D2The diameter of the light-transmitting hole 12 is D3In which D is1＞D 2，D 2≤D 3. Since the glass body 31 needs to be effectively fixed to the light hole 12, the glass body 31 can be connected to the inner surface of the housing 10 around the light hole 12, and D is the time1＞D 3. Of course, in other embodiments, the glass body 31 may be connected to the wall of the light-transmitting hole 12, and in this case D1＝D 3。
The annular portion formed between the rim of the glass body 31 and the relief region 311 is used to dispose the first fitting region 312, the first electrode 32, and the second electrode 33. The size of the relief region 311 (i.e., the diameter D of the relief region 311)2) The smaller the above-mentioned annular portion, the smaller the diameter D of the glass body 31, given the fixed condition1The smaller. Therefore, if the first fitting region 312 and the first and second electrodes 32, 33 are disposed on different sides of the glass body 31 and are located at the edges, the radial dimension of the above-mentioned annular portion of the glass body 31 can be as small as possible, so that the overall size of the glass body 31 is as small as possible, which facilitates processing and assembly, and facilitates control of cost and weight.
Specifically, the first electrode 32 and the second electrode 33 are in an arc shape with the same curvature as the glass body 31, the first fitting region 312 is in a ring shape or an arc shape with the same curvature as the glass body 31, the radial dimensions of the first electrode 32 and the second electrode 33 are the same as the radial dimension of the first fitting region 312, so that the first electrode 32 and the second electrode 33 are completely overlapped with the first fitting region 312, and the inner edges of the first electrode 32, the second electrode 33 and the first fitting region 312 are closely adjacent to the outer edge of the avoiding region 311. At this time, the radial dimension of the above-described annular portion of the glass body 31 is minimized, thereby minimizing the overall diameter of the glass body 31.
Preferably, the first fitting region 312 has a ring shape, and the first fitting region 312 is adhered to the inner surface of the housing 10 by an adhesive. Specifically, on the glass body 31 shown in fig. 5, the first matching area 312 is painted black by silk printing, so as to play a role of hiding (for example, hiding the first electrode 32 and the second electrode 33). It is understood that in other embodiments, the first fitting region 312 and the inner surface of the housing 10 can be connected in other manners, for example, the edge of the glass body 31 is engaged with the slot, or the glass body 31 is clamped by a clamp.
The connection mode between the glass body 31 and the case 10 and the positions of the first electrode 32 and the second electrode 33 on the glass body 31 are not limited to these, and in other embodiments, any other mode may be used that can effectively connect the glass body 31 and the case 10 and can facilitate the electrical connection between the first electrode 32 and the second electrode 33.
Fig. 7 is a schematic structural diagram of an inner side surface of the glass component 30 of the lens assembly according to another embodiment of the present application, wherein the first electrode 32 and the second electrode 33 are completely located inside the second fitting region 313.
In other embodiments of the present application, as shown in fig. 7, the glass body 31 has a second fitting region 313 on the inner side independent from the avoiding region 311, the second fitting region 313 is connected to the outer side of the housing 10, and the glass assembly 30 is fixed to the housing 10 by the connection of the second fitting region 313 to the outer side of the housing 10. Likewise, "outside of the housing 10" refers to an outer surface of the housing 10, and the second fitting region 313 is connected to the outer surface of the housing 10. In addition, the specific connection manner of the second fitting region 313 and the outer side surface of the housing 10 is similar to that of the first fitting region 312, and is not described herein again.
The second mating region 313, the first electrode 32 and the second electrode 33 are located on the same side of the glass body 31, and at least a portion of the first electrode 32 and at least a portion of the second electrode 33 are located between the second mating region 313 and the avoiding region 311, i.e., the first electrode 32 and the second electrode 33 are at least partially exposed from the second mating region 313. When the glass assembly 30 is assembled to the housing 10, the second fitting region 313 needs to be connected to the outer surface of the housing 10, and the portions of the first electrode 32 and the second electrode 33 exposed by the second fitting region 313 can be electrically connected without interfering with the connection of the second fitting region 313. Fig. 7 shows a preferred manner of the glass assembly 30 of the above embodiment, that is, the first electrode 32 and the second electrode 33 are completely exposed to the second fitting region 313, so that interference between the first electrode 32 and the second electrode 33 and the second fitting region 313 is avoided to the greatest extent.
The preferred embodiment of the glass unit 30 shown in fig. 7 will be described as an example. If the diameter D of the light-transmitting hole 12 is larger3Is larger than the diameter D of the escape area 3112At this time, an area formed between the second matching area 313 and the avoiding area 311 at least partially corresponds to the inside of the light-transmitting hole 12, the first electrode 32 and the second electrode 33 are disposed in the area corresponding to the inside of the light-transmitting hole 12, the first ends of the two first conductive transmission members 41 are electrically connected with the first electrode 32 and the second electrode 33, and the second ends of the two first conductive transmission members 41 penetrate through the light-transmitting hole 12 to extend into the accommodating cavity 11 and finally are led to the circuit board.
If the diameter D of the light-transmitting hole 12 is larger3Equal to the diameter D of the escape area 3112At this time, the first electrode 32 and the second electrode 33 are also shielded by the case 10. If there is a gap between the first electrode 32, the second electrode 33 and the outer surface of the housing 10, the gap is enough to accommodate the end of the first conductive transmission member 41, the connection can be made by the first conductive transmission member 41. In addition, if the first electrode 32, the second electrode 33 and the housing are formedThe outer surfaces of the housing 10 are closely attached to each other, and the conduction may be performed by providing a metal conduction portion on the housing 10, which will be described in detail below.
In the above embodiment, in order to facilitate the connection of the first electrode 32 and the second electrode 33 with the first conductive transmission member 41 in the receiving cavity 11, the second matching region 313 is located outside the first electrode 32 and the second electrode 33, and at least a part of the first electrode 32 and at least a part of the second electrode 33 are not overlapped with the second matching region 313, which results in a larger annular portion formed between the edge of the glass body 31 and the relief region 311. In addition, since the materials (e.g., silver) of the first electrode 32 and the second electrode 33 are generally opaque or even if the first electrode 32 and the second electrode 33 are transparent electrodes, the connection position of the first conductive transmission member 41 is also obvious, so that there are some portions of the first electrode 32 and the second electrode 33 that are not good enough to be beautiful, and in order to hide the appearance, these portions of the first electrode 32 and the second electrode 33 need to avoid the light transmission hole 12. For both of the above reasons, the diameter D of the glass body 311It needs to be made large, which is inconvenient for manufacturing, assembly, and cost and weight control. Even so, the manner of the above-described embodiment is still possible.
Fig. 8 shows a schematic structural diagram of the glass assembly 30 of the lens assembly according to another embodiment of the present application, wherein the first electrode 32 and the second electrode 33 completely coincide with the third fitting region 314. Fig. 9 is a schematic structural view of the glass assembly 30 of fig. 8 after being matched with the housing 10, the metal conductive part 42 and the second conductive transmission member 43.
In other embodiments of the present application, as shown in fig. 8 and 9, the housing 10 has two spaced apart metal conductive portions 42. The electrically conductive structure comprises two metallic conductive portions 42 and two second electrically conductive transmission members 43. The first ends of the two second conductive transmission members 43 are electrically connected to the two metal conduction portions 42, respectively. The second ends of the two second conductive transmission members 43 are electrically connected to the circuit board respectively. The second conductive transmission member 43 may be a conductive wire, a flexible conductive sheet, or other conductive transmission structure.
The glass body 31 has a third fitting region 314 independent of the avoiding region 311, and at least a portion of the first electrode 32 and at least a portion of the second electrode 33 are located in the third fitting region 314. The third mating region 314, the first electrode 32, and the second electrode 33 may be located on the inner side of the glass body 31 at the same time, or may be located on the outer side of the glass body 31 at the same time. When the glass assembly 30 is assembled, the third fitting region 314 is connected to the housing 10, and the first electrode 32 and the second electrode 33 are aligned with the two metal conduction parts 42 respectively and electrically connected, so that the first electrode 32 and the second electrode 33 are electrically connected to the circuit board through the metal conduction parts 42 and the second conductive transmission part 43.
Taking the glass component 30 shown in fig. 8 as an example, the first electrode 32 and the second electrode 33 completely coincide with the third mating zone 314. In the present embodiment, the third matching area 314 is adhered to the housing 10 by an adhesive, and the third matching area 314 is overlapped with the first electrode 32 and the second electrode 33, so as to reduce the glass manufacturing process. It should be noted that the size of the metal conduction part 42 can be designed reasonably, and the size is as small as possible while ensuring conduction, so that the heat generation of the metal conduction part 42 can be reduced, and the risk of electric leakage can be reduced. The metal conducting portion 42 may be a metal structure additionally disposed on the housing 10, or may be a part of the housing 10 itself, for example, most of the whole housing 10 is made of metal, and an insulating partition portion is disposed to divide the housing 10 into two spaced metal portions.
As shown in fig. 1 to 3, in some embodiments of the present application, the hole wall of the light-transmitting hole 12 has a mounting step 121 thereon. The glass assembly 30 is mounted at the mounting step 121. The bottom surface of the installation step 121 is adhered to the glass assembly 30, so that the glass assembly 30 is fixedly connected. The side surfaces of the mounting step 121 contact or are in clearance fit with the edges of the glass assembly 30 to provide a certain mounting orientation for the glass assembly 30 during assembly.
Taking the lens assembly shown in fig. 1 to 3 as an example, the housing 10 has a collar projecting inward, and a central hole of the collar forms the light transmission hole 12. The inner wall of the collar (the wall of the light-transmitting hole 12) has a mounting step 121. The bottom surface of the mounting step 121 faces the lens 21, and the bottom surface has a glue groove, and the glue groove is filled with glue to attach the first fitting region 312 on the outer side surface of the glass body 31 to the bottom surface of the mounting step 121, so as to perform bonding. At this time, it can be seen that the first fitting region 312 is connected with the inner surface of the housing 10.
Preferably, the mounting step 121 has at least one positioning surface 1211 on a side surface thereof. The edge of the glass assembly 30 has a locating mating surface 35 that mates with the locating surface 1211. When the glass assembly 30 is mounted on the mounting step 121, the positioning surface 1211 and the positioning mating surface 35 are engaged with each other to achieve positioning. As shown in fig. 1, in the present embodiment, the side surface of the mounting step 121 and the glass body 31 are both circular, the positioning surface 1211 is one and flat, and the positioning surface 1211 is disposed on the top of the side surface of the mounting step 121. Accordingly, the locating mating surface 35 is one and planar, and the locating mating surface 35 is disposed on the top of the glass body 31.
The structure of the convex ring on the housing 10 is not limited to this, and other structures may be used in other embodiments. For example, the convex ring of the housing 10 protrudes outward, the inner wall of the convex ring has a mounting step 121, the bottom surface of the mounting step 121 still faces the lens 21, and the first fitting region 312 on the outer side surface of the glass body 31 is attached to the bottom surface of the mounting step 121, thereby performing bonding. At this time, although the convex ring of the housing 10 is outwardly protruded, the first fitting region 312 is still connected with the inner surface of the housing 10. The structure of the case 10 for connecting the glass body 31 is not limited to the convex ring, and may be another connection structure in another embodiment. For example, the hole wall of the light hole 12 has a slot, and the edge of the glass body 31 is engaged with the slot.
As shown in fig. 1-3, in some embodiments of the present application, the lens assembly further includes a dust ring 50. The dust ring 50 is disposed between the lens 21 and the glass assembly 30. The inner wall of the dust ring 50, the lens 21 and the glass assembly 30 together form a sealed cavity 60, thereby playing a role of sealing and preventing dust. It should be noted that, in order not to affect the imaging effect of the lens 21, the inner circle of the dust ring 50 should be larger than the viewing angle range of the lens 21. Preferably, the dustproof ring 50 is made of dustproof foam, and the dustproof foam has good sealing performance and can play a certain role in buffering and shock absorption. Of course, the material of the dust ring 50 is not limited to this, and in other embodiments, other materials such as rubber may be used for the dust ring 50.
The embodiment of the application also provides shooting equipment, and the shooting equipment specifically comprises the lens assembly. The photographing apparatus may be various photographing apparatuses required to have defogging and anti-fogging functions, such as a pan-tilt camera, a motion camera, a vehicle-mounted camera, a surveillance camera, a conventional type camera, a video camera, and the like. Fig. 2 shows a schematic cross-sectional view of the photographing apparatus as a pan-tilt camera. The shooting equipment of this embodiment is owing to have above-mentioned lens subassembly to can realize quick defogging, prevent the fog, be applicable to various adverse circumstances, and the risk of exploding is low, uses safelyr.
For the embodiments of the present application, it should also be noted that, in a case of no conflict, the embodiments of the present application and features of the embodiments may be combined with each other to obtain a new embodiment.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and the scope of the present application shall be subject to the scope of the claims.
Claims (14)
- A lens assembly, comprising:the light-emitting diode comprises a shell (10), wherein a containing cavity (11) is formed in the shell (10), and a light-transmitting hole (12) is formed in the shell (10);the lens module (20) is arranged in the accommodating cavity (11), the lens module (20) comprises a lens (21), and the light hole (12) is positioned on the front side of the lens (21);a glass assembly (30) disposed at the light-transmitting hole (12) and hermetically connected to a wall of the light-transmitting hole (12), the glass assembly (30) comprising:a glass body (31) having an avoidance region (311) for avoiding a field range of the lens (21);a transparent conductive layer at least partially covering the relief area (311) of the glass body (31);the first electrode (32) and the second electrode (33) are arranged on the glass body (31) and located outside the avoidance area (311), and the first electrode (32) and the second electrode (33) can be connected with electricity through the transparent conductive layer to heat the glass body (31).
- The lens assembly of claim 1,the first electrode (32) and the second electrode (33) are respectively arranged at two opposite sides outside the avoiding region (311), the transparent conducting layer at least covers the part, located between the first electrode (32) and the second electrode (33), of the glass body (31), and the transparent conducting layer is electrically connected with the first electrode (32) and the second electrode (33).
- The lens assembly of claim 1,the transparent conductive layer includes a conductive film (34) formed on a surface of the glass body (31) by a plating process.
- The lens assembly of claim 3,the conductive film (34) includes a metal ion film or a semiconductor film.
- The lens assembly of claim 2,the first electrode (32) and the second electrode (33) are arranged symmetrically with respect to the center of the glass body (31); or,the first electrode (32) and the second electrode (33) are both disposed along an edge of the glass body (31).
- The lens assembly of claim 1,the lens module (20) further comprises a circuit board, the lens assembly further comprises an electric conduction structure, and the first electrode (32) and the second electrode (33) are electrically connected with the circuit board through the electric conduction structure.
- The lens assembly of claim 6,the electric conduction structure comprises two first electric conduction transmission pieces (41), the first electrode (32) and the second electrode (33) are located on the inner side face of the glass body (31), the first ends of the two first electric conduction transmission pieces (41) are respectively electrically connected with the first electrode (32) and the second electrode (33), and the second ends of the two first electric conduction transmission pieces (41) are respectively electrically connected with the circuit board.
- The lens assembly of claim 1,the outer side surface of the glass body (31) is provided with a first matching area (312) independent of the avoiding area (311), the first matching area (312) is connected with the inner side of the shell (10), the first matching area (312) is arranged along the edge of the glass body (31), the first electrode (32) and the second electrode (33) are arranged on the inner side surface of the glass body (31), and the positions of the first matching area (312) and the second matching area correspond to the position of the first matching area (312) on the outer side surface of the glass body (31).
- The lens assembly of claim 1,the inner side surface of the glass body (31) is provided with a second matching area (313) independent of the avoiding area (311), the second matching area (313) is connected with the outer side of the shell (10), and at least part of the first electrode (32) and at least part of the second electrode (33) are positioned between the second matching area (313) and the avoiding area (311).
- The lens assembly of claim 6,the shell (10) is provided with two spaced metal conducting parts (42), the electric conduction structure comprises two metal conducting parts (42) and two second electric conduction transmission pieces (43), first ends of the two second electric conduction transmission pieces (43) are respectively and electrically connected with the two metal conducting parts (42), second ends of the two second electric conduction transmission pieces (43) are respectively and electrically connected with the circuit board,the glass body (31) is provided with a third matching area (314) independent of the avoiding area (311), at least part of the first electrode (32) and at least part of the second electrode (33) are located in the third matching area (314), and when the third matching area (314) is connected with the shell (10), the first electrode (32) and the second electrode (33) are respectively electrically connected with the two metal conducting parts (42).
- The lens assembly of claim 1,the hole wall of the light hole (12) is provided with an installation step (121), the glass assembly (30) is installed at the installation step (121), the bottom surface of the installation step (121) is bonded with the glass assembly (30), and the side surface of the installation step (121) is in contact with or in clearance fit with the edge of the glass assembly (30).
- The lens assembly of claim 11,the side surface of the mounting step (121) is provided with at least one positioning surface (1211), and the edge of the glass component (30) is provided with a positioning matching surface (35) matched with the positioning surface (1211).
- The lens assembly of claim 1, further comprising:the dustproof ring (50) is arranged between the lens (21) and the glass assembly (30), and the inner wall of the dustproof ring (50), the lens (21) and the glass assembly (30) jointly form a sealed cavity (60).
- A photographing apparatus comprising the lens assembly of any one of claims 1 to 13.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020222295379 | 2020-10-09 | ||
| CN202022229537.9U CN212811844U (en) | 2020-10-09 | 2020-10-09 | Lens assembly and shooting equipment with same |
| PCT/CN2020/133749 WO2022073292A1 (en) | 2020-10-09 | 2020-12-04 | Lens assembly and photographing device having same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114556901A true CN114556901A (en) | 2022-05-27 |
Family
ID=75091435
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022229537.9U Expired - Fee Related CN212811844U (en) | 2020-10-09 | 2020-10-09 | Lens assembly and shooting equipment with same |
| CN202080073559.0A Pending CN114556901A (en) | 2020-10-09 | 2020-12-04 | Lens assembly and shooting equipment with same |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022229537.9U Expired - Fee Related CN212811844U (en) | 2020-10-09 | 2020-10-09 | Lens assembly and shooting equipment with same |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN212811844U (en) |
| WO (1) | WO2022073292A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116437173A (en) * | 2023-04-14 | 2023-07-14 | 江苏泽景汽车电子股份有限公司 | Camera shell and camera module |
| CN116609989B (en) * | 2023-07-19 | 2023-10-03 | 杭州目博科技有限公司 | Waterproof anti-fog lens of inspection vehicle |
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| KR102556516B1 (en) * | 2016-08-11 | 2023-07-17 | 엘지이노텍 주식회사 | Camera module |
| US11249372B2 (en) * | 2017-02-13 | 2022-02-15 | Lg Innotek Co., Ltd. | Camera module and vehicle |
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- 2020-10-09 CN CN202022229537.9U patent/CN212811844U/en not_active Expired - Fee Related
- 2020-12-04 CN CN202080073559.0A patent/CN114556901A/en active Pending
- 2020-12-04 WO PCT/CN2020/133749 patent/WO2022073292A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07100043A (en) * | 1993-10-01 | 1995-04-18 | Tatsuguchi Kogyo Glass Kk | Defogging mirror |
| US20120170119A1 (en) * | 2011-01-04 | 2012-07-05 | Chu Yi-Chih | Defogging and defrosting device for protective lens of a camera |
| JP2014218385A (en) * | 2013-05-01 | 2014-11-20 | 株式会社モノハ | Transparent conductive film glass heater |
| CN108064350A (en) * | 2016-12-23 | 2018-05-22 | 深圳市柔宇科技有限公司 | Optical lens, camera module and terminal |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2022073292A1 (en) | 2022-04-14 |
| CN212811844U (en) | 2021-03-26 |
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