KR102575810B1 - Dehumaification optical lens module - Google Patents

Abstract

A dehumidifying optical system lens module according to an embodiment includes a lens assembly having a plurality of lens units aligned along an axial direction therein; and a holder arranged to surround and fix at least a portion of the lens assembly and communicating with the inner space of the lens assembly, wherein the lens assembly is formed in a tubular shape, and the plurality of lens units are positioned therein. , A case having a first wall channel and a second wall channel communicating with the inner space; a cover lens disposed in front of the case; a retainer surrounding a portion of the front edge of the cover lens and coupled to the case; and a sealing member disposed between the cover lens and the retainer, wherein the holder includes: an inlet passage communicating with a first wall passage of the case; and an outlet channel communicating with the second wall channel of the case.

Description

Dehumidification optical system lens module {DEHUMAIFICATION OPTICAL LENS MODULE}

A dehumidifying optical system lens module is disclosed. Specifically, a dehumidifying optical system lens module that is sealed from the outside and satisfies waterproof conditions is disclosed.

Recently, a lens assembly having a waterproof treatment has been used, such as a camera or a lamp.

Such a lens assembly forms an optical image using the properties of light, and is mainly used in automobile cameras and the like. In particular, these lens assemblies have recently been widely used as auxiliary devices for automobiles, and are often exposed to the outside, so waterproofing (typically, IP69K 100BAR level) is required.

Such a waterproof optical system lens assembly blocks ventilation with the outside due to its waterproof nature, and accordingly, the humidity in the lens assembly is determined according to the environment when the lens assembly is manufactured.

For example, when such a lens assembly is used in an automobile or the like, it is mainly applied to a digital side mirror. When the vehicle is driven, the lens assembly is cooled by cold wind, thereby causing condensation to form on the lens inside the lens assembly. This dew condensation obstructs the sensing of the sensor by clouding the lens in the lens assembly.

In order to solve this problem, a lens assembly having a structure for removing internal moisture is disclosed in Korean Patent Publication No. 2019-0102724 "Camera Module for Vehicles".

However, the above-mentioned “vehicle camera module” solves the dew condensation problem by applying heat to the lens, and must continuously keep the lens warm, and it is impossible to fundamentally remove internal moisture.

A first object of the present invention is to provide a dehumidifying optical system lens module capable of preventing dew condensation in a lens assembly.

A second object of the present invention is to provide a dehumidifying optical system lens module that can be assembled while preventing waterproof defects of the lens assembly.

A third object of the present invention is to provide a dehumidifying optical system lens module for solving the accumulation tolerance of a plurality of lenses disposed inside a lens assembly.

In order to achieve the first object of the present invention, the dehumidification optical system lens module of the present invention includes a lens assembly having a plurality of lens units aligned along an axial direction therein; and a holder arranged to surround and fix at least a portion of the lens assembly and communicating with the inner space of the lens assembly, wherein the lens assembly is formed in a tubular shape, and the plurality of lens units are positioned therein. , A case having a first wall channel and a second wall channel communicating with the inner space; a cover lens disposed in front of the case; a retainer surrounding a portion of the front edge of the cover lens and coupled to the case; and a sealing member disposed between the cover lens and the retainer, wherein the holder includes: an inlet passage communicating with a first wall passage of the case; and an outlet channel communicating with the second wall channel of the case.

In order to achieve the second object of the present invention, the retainer of the dehumidifying optical system lens module of the present invention includes a first retainer formed in a tubular shape to cover a side surface of the cover lens and a front portion of the case; and a second retainer formed in an annular shape, an outer circumferential surface of which is interdigitated with an inner circumferential surface of the first retainer, and disposed behind the cover lens, wherein the second retainer is coupled to the first retainer, so that the second retainer is coupled to the first retainer. 1 retainer supports the cover lens from a rear side of the cover lens to fix the position of the cover lens, and the second retainer has a plurality of ventilation grooves communicating with the first wall channel and the second wall channel. can

In order to achieve the second object of the present invention, the first retainer of the dehumidifying optical system lens module of the present invention includes a protruding jaw protruding in a centrifugal direction from an inner circumferential surface of the first retainer in front of the first retainer; a first inner end having a larger diameter than the diameter of the opening formed by the protruding jaw and formed behind the protruding jaw in an axial direction of the first retainer; a second inner end having a larger diameter than that of the first inner end and formed behind the first inner end in an axial direction of the first retainer; and a third inner end having a larger diameter than the diameter of the second inner end and formed behind the second inner end in an axial direction of the first retainer, wherein the outer diameter of the cover lens is the third inner end. 1 corresponds to the diameter of the inner end, the cover lens is inserted into an area surrounded by the first inner end of the first retainer, and the diameter of the outer circumferential surface of the second retainer corresponds to the diameter of the second inner end The second retainer is inserted into an area surrounded by the second inner end of the first retainer and coupled to the first retainer, and an outer diameter of at least a part of the case corresponds to a diameter of the third inner end. At least a portion of the case may be inserted into an area surrounded by the third inner end of the first retainer and coupled to the first retainer.

In order to achieve the second object of the present invention, the second inner end of the first retainer of the dehumidifying optical system lens module of the present invention has a screw thread, and the outer peripheral surface of the second retainer has a screw thread of the second inner end. Corresponding threads are formed so that the first retainer and the second retainer can be screwed together.

In order to achieve the first object of the present invention, the second retainer of the dehumidifying optical system lens module of the present invention has a plurality of through passages, the plurality of ventilation grooves communicate with the plurality of through passages, and the second retainer It is formed on the retainer in the direction of the cover lens, and the plurality of through passages may communicate with the first wall passage and the second wall passage, respectively.

In order to achieve the third object of the present invention, the second retainer of the dehumidifying optical system lens module of the present invention is disposed in front of the case, the case and the second retainer are spaced apart from each other, and the plurality of through passages The first wall channel and the second wall channel may communicate with each other through a space formed between a front side of the case and a rear side of the second retainer.

In order to achieve the first object of the present invention, the case of the dehumidifying optical system lens module of the present invention is surrounded by the retainer and the holder, and the first wall passage and the second wall passage are formed on the outer circumferential surface of the case It may be defined by a recess, and an inner circumferential surface of the holder and the retainer in contact with the outer circumferential surface of the case.

In order to achieve the first object of the present invention, the case of the dehumidifying optical system lens module of the present invention includes a first connection passage and a second connection passage penetrating at least a portion of the case in a radial direction, and the plurality of lenses The units are aligned along an inner circumferential surface of the tubular case, the lens assembly further includes a spacer disposed between the plurality of lens units to separate the plurality of lens units, and the first wall channel and the second The wall channel is defined by a recess formed on an inner circumferential surface of the case, the spacer disposed in the case, and the plurality of lens units, the first connection channel connects the first wall channel and the inlet channel, and A second connection passage may connect the second wall passage and the outlet passage.

In order to achieve the first object of the present invention, the dehumidifying optical system lens module of the present invention includes a fluid supply line connected to the inlet passage; and a fluid recovery line connected to the outlet passage, wherein the fluid supply line supplies low-humidity gas to the holder, and the fluid recovery line recovers the gas circulating through the lens assembly through the holder. and can be discharged to the outside.

In order to achieve the first object of the present invention, the holder of the dehumidifying optical system lens module of the present invention may further include stoppers for closing the inlet passage and the outlet passage, respectively.

The effects of the present invention obtained through the above solutions are as follows.

First, according to the dehumidifying optical system lens module according to the present invention, the dehumidifying optical system lens module has a passage through which a fluid can be circulated, and low-humidity air can be selectively supplied to the passage. Low-humidity air is continuously supplied to the dehumidifying optical system lens module, and a flow of fluid can be generated in the inner space of the dehumidifying optical system lens module, which causes condensation to occur on the inner lens units and the rear of the cover lens of the dehumidifying optical system lens module. that can be prevented

Specifically, in the use environment, the flow path is opened so that the air in the dehumidifying optical system lens module can be naturally exhausted and circulated. Accordingly, condensation caused by the temperature difference between the inside and outside of the dehumidifying optical system lens module can be prevented, and low-humidity air can be artificially introduced. It is possible to prevent dew condensation by removing moisture in the passage by supplying air to the passage, and after supplying low-humidity air to the passage, the passage is closed through a stopper to maintain an internal low-humidity environment.

In addition, after the dehumidifying optical system lens module is manufactured, a low-humidity fluid may be provided to the inner space of the dehumidifying optical system lens module to remove moisture that may be introduced from the manufacturing environment. Thereafter, the humidity of the internal space may be kept low by sealing the dehumidifying optical system lens module.

Second, according to the dehumidifying optical system lens module according to the present invention, the retainer and the cover lens are compressed by first pressing the retainer and the cover lens so that the O-ring or sealing member disposed between the retainer and the cover lens is not damaged. It is possible to combine the retainer and the cover lens in . Accordingly, damage or breakage of the O-ring or sealing member can be prevented, thereby reducing the waterproof defect rate of the dehumidifying optical system lens module. In addition, since this retainer fixes the O-ring or the sealing member, a design compressibility of the O-ring or the sealing member can be achieved regardless of the accumulated tolerance caused by the overlapping of the plurality of lens units.

Third, according to the dehumidifying optical system lens module according to the present invention, the retainer includes a pillar element protruding in the direction of the case, and when the retainer and the case are coupled, the retainer may be drawn into the tubular shape of the case. A plurality of lens units are arranged in the inner tube of the case, and the pillar element pushes the plurality of lens units to the rear of the lens of the waterproof optical system to fix the plurality of lenses.

1 is a front perspective view of a dehumidifying optical system lens module of the present invention.
FIG. 2 is a rear perspective view of the dehumidifying optical system lens module shown in FIG. 1 .
3 is a cross-sectional view of the dehumidifying optical system lens module according to the first embodiment.
FIG. 4 shows a state in which dew condensation occurs in the dehumidifying optical system lens module shown in FIG. 3 .
FIG. 5 illustrates fluid flow in the dehumidifying optics lens module shown in FIG. 3 .
FIG. 6 is a rear perspective view in which a stopper is applied to the dehumidifying optical system lens module shown in FIG. 5 .
7 is a cross-sectional view of a dehumidifying optical system lens module according to a second embodiment.
FIG. 8 shows a state in which dew condensation occurs in the dehumidifying optical system lens module shown in FIG. 7 .
FIG. 9 illustrates fluid flow in the dehumidifying optics lens module shown in FIG. 7 .
10 is a cross-sectional view of a dehumidifying optical system lens module according to a third embodiment.
FIG. 11 illustrates dew condensation in the dehumidifying optical system lens module shown in FIG. 10 .
FIG. 12 illustrates fluid flow in the dehumidifying optical system lens module shown in FIG. 10 .
13 is a cross-sectional view of a dehumidifying optical system lens module according to a fourth embodiment.
14 is a cross-sectional view of a dehumidifying optical system lens module according to a fifth embodiment.
15 is a partial cross-sectional view of a dehumidifying optical system lens module according to a sixth embodiment.

Hereinafter, the dehumidification optical system lens module according to the present invention will be described in more detail with reference to the drawings. The accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes and equivalents included in the spirit and technical scope of the present invention are included. It should be understood to include water or substitutes.

Singular expressions used herein include plural expressions unless the context clearly dictates otherwise.

In this specification, when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but there may be other elements in the middle. It should be understood that it may be On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

In addition, the terms "comprise" or "have" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features or numbers However, it should be understood that it does not preclude the presence or addition of steps, operations, components, parts, or combinations thereof.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. When an element is described as being “connected,” “coupled to,” or “connected” to another element, that element may be directly connected or connected to the other element, but there may be another element between the elements. It should be understood that may be "connected", "coupled" or "connected".

Components included in one embodiment and components having common functions will be described using the same names in other embodiments. Unless stated to the contrary, descriptions described in one embodiment may be applied to other embodiments, and detailed descriptions will be omitted to the extent of overlap.

Incidentally, components having the same structural reference numerals may be recognized as identical or similar components in other embodiments unless otherwise specified. For example, elements having reference numerals 1320 and similar names may be the same as or similar to elements 320, 2320, 3320, and the like, unless otherwise specified.

1 is a front perspective view of the dehumidifying optical system lens module of the present invention, and FIG. 2 is a rear perspective view of the dehumidifying optical system lens module shown in FIG. 1 .

Referring to FIGS. 1 and 2 , the dehumidifying optical system lens module includes a lens assembly 100 and a holder 200 .

The lens assembly 100 is formed in a cylindrical shape having a space therein, and the holder 200 is formed to surround at least a part of the rear of the lens assembly 100. That is, as shown in FIGS. 1 and 2, the front portion of the lens assembly 100 (the central axis of the lens assembly 100 formed in a cylindrical shape) defines the direction of the cover lens 130 shown in the drawing as the front, The direction of the holder 200, the fluid supply line 300, and the fluid recovery line 400 is defined as backward) is exposed, and a rear part of the lens assembly 100 is surrounded by the holder 200.

An opening is formed on the front surface of the lens assembly 100, and a portion of the cover lens 130 protrudes and is exposed through the opening.

The holder 200 is coupled to the lens assembly 100 and communicates with the inner space of the lens assembly 100 .

Specifically, the holder 200 includes an inlet passage 202 and an outlet passage 204 formed to communicate with the outside, and each of the inlet passage 202 and the outlet passage 204 is of the lens assembly 100. It is connected to and communicates with the openings formed on the side surfaces. The rear of the holder 200 may be provided in an open state, whereby outdoor air is naturally circulated to prevent dew condensation caused by a temperature difference or excessive moisture.

Alternatively, the fluid supply line 300 and the fluid recovery line 400 may be connected to the rear of the holder 200, and the fluid supply line 300 may supply fluid to the inner space of the lens assembly 100, The fluid recovery line 400 may recover fluid in the inner space of the lens assembly 100 . Accordingly, the fluid in the inner space of the lens assembly 100 is circulated.

FIG. 3 is a cross-sectional view of the dehumidifying optical system lens module according to the first embodiment, FIG. 4 shows dew condensation in the dehumidifying optical system lens module shown in FIG. 3, and FIG. 5 is the dehumidifying optical system lens module shown in FIG. 6 is a rear perspective view of a cap applied to the dehumidifying optical system lens module shown in FIG. 5 .

1 to 5 , the lens assembly 100 of the dehumidifying optical system lens module according to the first embodiment includes a plurality of lens units 120 and a plurality of lens units 120 aligned along an axial direction. It includes a tubular case 110 for accommodating. In addition, as described above, the lens assembly 100 surrounds the cover lens 130 disposed in front of the case 110 and a part of the front edge of the cover lens 130, and the first coupled to the case 110. The retainer 140, the second retainer 150 interlockingly coupled with the inner circumferential surface of the first retainer 140 inside the first retainer 140, and a seal disposed between the first retainer 140 and the cover lens 130 It includes member 160.

The lens units 120 have a diameter corresponding to the inner diameter of the tubular case 110 and are arranged along the inner circumferential surface of the case 110, and a plurality of spacers 170 are provided between the lens units 120. It may be placed in contact with the inner circumferential surface of the case 110 . The spacer 170 may fix the position of each lens unit 120 and may additionally align the plurality of lens units 120 while leaving them spaced apart. A protrusion may be formed on the rearmost side of the case 110 in the direction of a central axis of the case 110, and the protrusion may be formed on the lens unit 120 disposed rearward in the inside of the case 110 among the lens units 120. The escaping to the outside can be prevented, and the position of the rearmost lens unit 120 can be fixed. The lens unit 120 may come into contact with the protrusion to seal the case.

The first retainer 140 may be formed in a tubular shape to cover a side surface of the cover lens 130 and a front portion of the case 110 . An opening may be formed in front of the first retainer 140 , and a protrusion 142 protruding in a centrifugal direction of the first retainer 140 may be formed in the front of the first retainer 140 .

Specifically, the first retainer 140 has an annular cross section with a hole in the middle, and the first retainer 140 extends to the rear so that the annular diameter gradually increases, so that the front and rear openings have different sizes. can be formed as The protruding jaw 142 may protrude from the front inner circumferential surface of the first retainer 140 toward an imaginary central axis of the first retainer 140, and the protruding jaw 142 may protrude from the inner circumferential surface of the first retainer 140. Therefore, it can protrude and form an annular shape. Accordingly, the protruding jaw 142 may define an opening positioned in front of the first retainer 140 . The protruding jaw 142 may be formed to have an oblique cross section with a diameter gradually increasing from the rear to the front of the lens assembly 100 . That is, the protruding jaw 142 may be inclined so that its diameter gradually widens from the rear to the front, and the rear of the protruding jaw 142 may be formed flat in the cross-sectional shape of the first retainer 140 .

An inner circumferential surface of the first retainer 140 may be formed with a plurality of stages. Specifically, the inner circumferential surface of the first retainer 140 may include a first inner end 144 , a second inner end 146 , and a third inner end 148 . The diameter of the first inner end 144 is greater than or equal to the diameter of the opening defined by the protruding jaw 142, and the diameter of the second inner end 146 is greater than or equal to the diameter of the first inner end 144. And, the diameter of the third inner end 148 may be greater than or equal to the diameter of the second inner end 146.

As described above, the inner circumferential surface of the first retainer 140 may be formed to gradually increase from the front to the rear, and thus the protruding jaw 142 formed on the inner circumferential surface of the first retainer 140, the first inner end ( 144), the second inner end 146 and the third inner end 148 are the first inner end 144, the second inner end 146 and the third inner end ( 148) can be formed sequentially from the front to the rear.

More specifically, a protruding jaw 142 is formed on the inner circumferential surface on the front side of the first retainer 140, and the first inner end 144 is defined as the protruding jaw 142 on the inner circumferential surface of the first retainer 140. It is larger than the diameter of one opening and is formed at the rear of the protruding jaw 142, the second inner end 144 is formed at the rear of the first inner end 144 on the inner circumferential surface of the first retainer 140, and the third inner end The end 148 may be formed behind the second inner end 146 on the inner circumferential surface of the first retainer 140 .

The second retainer 150 may be formed to be coupled with the first retainer 140 . Specifically, the second retainer 150 may be coupled at the second inner end 146 of a portion of the inner circumferential surface of the first retainer 140, and specifically, the outer circumferential diameter of the second retainer 150 is the second inner end Corresponding to the diameter of 146, the second retainer 150 may be inserted into an area surrounded by the second inner end 146 and coupled with the first retainer 140.

Like the first retainer 140, the second retainer 150 may be formed in an annular shape with a hole in the center and extend rearward. That is, the second retainer 150 may have an opening, and the opening of the first retainer 140 and the opening of the second retainer 150 are formed by the central axis of the first retainer 140 and the second retainer 150. The same virtual axis as the central axis of may be formed (the virtual axis connecting the centrifugal center of the opening of the first retainer 140 and the centrifugal center of the second opening is the virtual axis of the first retainer 140 and the second retainer 150, respectively). coincides with the central axis of ).

A screw thread may be disposed on an outer circumferential surface of the second retainer 150 in a radial direction. In addition, a thread may be formed on a portion of an inner circumferential surface of the first retainer 140 , that is, a surface of the second inner end 146 of the first retainer 140 coupled to the second retainer 150 . Accordingly, the first retainer 140 and the second retainer 150 may be screwed together.

A part of the second retainer 150 extends rearward, so that when the first retainer 140 and the case 110 are coupled, a part of the second retainer 150 is disposed within the case 110. The lens unit 120 can come into contact with

Specifically, a portion of the second retainer 150 that is smaller than or equal to the inner diameter of the case 110 may additionally be extended rearward, so that the inner diameter of the second retainer 150 may be smaller than or equal to the inner diameter of the case 110, and thus the second retainer 150 Some may be drawn into case 110 . A part of the second retainer 150 may come into contact with the lens unit 120 positioned at the front of the lens units 120 disposed in the case 110 .

Conversely, another part of the second retainer 150 may be disposed to be spaced apart from the front end of the case 110, and thus a space may be formed between the second retainer 150 and the front end of the case 110. there is.

The cover lens 130 may be disposed between the protruding jaw 142 of the first retainer 140 and a portion of the edge portion of the second retainer 150 . Specifically, the protruding jaw 142 of the first retainer 140, the cover lens 130, and parts of the second retainer 150 may be sequentially aligned in a direction from the front to the rear. The side surface of the cover lens 130 may be disposed to come into contact with the inner circumferential surface of the first retainer 140 , and in particular, the cover lens 130 may be seated in an area surrounded by the first inner end 144 . More specifically, the diameter of the outer circumferential surface of the cover lens 130, that is, the outer diameter corresponds to the diameter of the first inner end 144, and the cover lens 130 is attached to the first inner end 144 of the first retainer 140. can be inserted into the area covered by

A part of one front surface of the cover lens 130 may be formed convexly, and a part of the other rear surface in the opposite direction may be formed concavely. The convex portion of the cover lens 130 may be convexly exposed to the outside by fitting into an opening defined by the protruding jaw 142 . An opening of the second retainer 150 is disposed behind the cover lens 130, and the cover lens 130 is defined as a protruding jaw 142 to prevent the opening of the second retainer 150 from communicating with the outside The opening and the opening of the second retainer 150 may be blocked.

Also, the circumference of the cover lens 130 may be formed flat. A flat portion around the cover lens 130 may correspond to the rear of the protruding jaw 142 . Specifically, the size and shape of the circumferential portion of the cover lens 130 correspond to that of the protruding jaw 142 so that they may come into contact with each other.

Additionally, an annular groove (not shown) may be formed on one side of the cover lens 130 in the direction of the protruding jaw 142 . That is, such an annular groove may be disposed along a flat surface of the cover lens 130 formed in an annular shape.

In the drawings and detailed description herein, the cover lens 130 is illustrated and described as including a convex portion, but is not necessarily limited thereto. The cover lens may be disposed so as to be exposed from the front, for example, it may be formed flat or concave at the front.

The sealing member 160 has elasticity and may be disposed between the front of the circumference of the cover lens 130 and the rear of the protruding jaw 142 . When an annular groove is provided around the cover lens 130, a portion of the sealing member 160 may be inserted into the annular groove. The annular groove may fix the position of the sealing member 160 when the lens assembly 100 is assembled. Specifically, before assembling the first retainer 140 and the second retainer 150, the sealing member 160 and the circumferential portion of the cover lens 130 are separated from the rear of the protruding jaw 142 of the first retainer 140 and the second retainer 140. It may be disposed between the front of the two retainers 150. The sealing member 160 may be disposed in front of the cover lens 130, that is, the protruding jaw 142, the sealing member 160, the cover lens 130, and the second retainer 150 are moved from the front to the rear. Can be sorted sequentially.

As the lens assembly 100 is assembled, the sealing member 160 disposed between the protruding jaw 142 and the cover lens 130 is protruded by the coupling of the first retainer 140 and the second retainer 150, that is, It can be compressed in the axial direction by the jaw 142 and the cover lens 130 . Accordingly, fine ventilation holes formed between the first retainer 140 and the cover lens 130 may be blocked by the sealing member 160, and thus waterproof performance may be improved.

Referring back to FIG. 3 , the diameter of the third inner end 148 of the first retainer 140 corresponds to the front outer diameter of the case 110, and the third inner end 148 is the front outer circumferential surface of the case 110. may come into contact with some. That is, the case 110 may be inserted into an area surrounded by the third inner end 148 of the first retainer 140 and coupled to the first retainer 140 .

Specifically, at least a portion of the front of the case 110 and at least a portion of the third inner end 148 of the first retainer 140 may contact and be coupled to each other, for example, at least a portion of the front of the case 110 Threads are formed on at least a portion of the third inner end 148 of the first retainer 140, respectively, so that the first retainer 140 and the case 110 can be screwed together. Alternatively, intaglios or embossments may be formed on at least a portion of the front side of the case 110, and intaglios or embossments matching them may be formed on the third inner end 148 of the first retainer 140, and the two intaglios and The first retainer 140 and the case 110 may be coupled by the embossed fastening.

Likewise, the holder 200 may be formed to surround a rear portion of the case 110, that is, the rear portion of the case 110 may be inserted wrapped around the holder 200 and coupled to the holder.

Referring to FIGS. 4 and 5 , as described above, the holder 200 may receive external fluid and deliver it to the lens assembly 100, and the fluid flowing into the inner space of the lens assembly 100 is the lens assembly. After circulating inside (100), it passes through the holder 200 and is discharged to the outside, and the fluid in the inner space of the lens assembly 100 can be circulated.

For example, air is stored in the inner space of the lens assembly 100 , and the holder 200 may receive low-humidity gas from the fluid supply line 300 connected thereto and transfer the gas to the lens assembly 100 . Thereafter, the low-humidity gas delivered to the lens assembly 100 may flow into the lens assembly 100, and the air stored in the inner space of the lens assembly 100 passes through the holder 200 and is connected to the holder 200. It may be discharged to the outside by the fluid recovery line 400 .

Specifically, as shown in FIGS. 4 and 5 , a case 110 of the lens assembly 100 , a first retainer 140 , a second retainer 150 , and a flow path through which fluid circulates are formed.

The case 110 may include a first wall passage 112 and a second wall passage 114 formed to communicate with the inner space of the lens assembly 100 .

In the first embodiment of the present application, the first wall channel 112 and the second wall channel 114 are recesses formed on the outer circumferential surface of the case 110 and the holder 200 contacting the outer circumferential surface of the case 110 and the first wall channel 112. Defined by retainer 140 .

More specifically, at least two recesses (grooves) are formed on the outer circumferential surface of the case 110, and these grooves extend from the rear end of the case 110 to the front end. The front end of the holder 200 and the rear end of the first retainer 140 are formed to contact each other, and a closing member 180 may be disposed between the contact surfaces. When the holder 200 and the first retainer 140 are disposed to cover both the exterior of the case 110, the closing member 180 blocks a fine ventilation hole that may be formed between the holder 200 and the first retainer 140 to seal the inner space of the dehumidifying optical system lens module. achieve

When the holder 200 and the first retainer 140 are coupled so as to cover the entire surface of the case 110 where at least two recesses are formed, the open side of these recesses is separated from the inner circumferential surface of the holder 200. A flow path may be formed by being blocked by the inner circumferential surface of the first retainer 140 . That is, at least two recesses are defined as the first wall channel 112 and the second wall channel 114 by the case 110 , the holder 200 , and the first retainer 140 .

The first wall passage and the second wall passage are illustrated and described as being formed on the outer surface of the case, but are not necessarily limited thereto. For example, the recess constituting the first wall channel and the second wall channel may be formed on inner circumferential surfaces of the holder and the first retainer, or may be formed to penetrate the case in an axial direction. Also, as will be described below in another embodiment, a recess may be formed on the inner circumferential surface of the case to define the first wall channel and the second wall channel.

The first wall channel 112 and the second wall channel 114 may communicate with a space formed according to the separation between the second retainer 150 and the front end of the case 110 described above.

In addition, a ventilation groove 152 is formed on the front surface of the second retainer 150, and one surface of the ventilation groove 152 opened by the cover lens 130 is blocked so that a flow path may be formed in a portion thereof. A plurality of such ventilation grooves 152 may be provided. Additionally, a plurality of through passages 154 formed to pass through the second retainer 150 may be included so that the front space of the second retainer 150 and the rear space of the second retainer 150 communicate with each other. That is, the plurality of through passages 154 are connected to the ventilation grooves 152 so that the space behind the cover lens 130 and the space behind the second retainer 150 can communicate with each other.

That is, the first wall channel 112 may communicate with the space behind the cover lens 130 through the through channel 154 and the ventilation groove 152, and the rear space of the cover lens 130 may be in communication with the ventilation groove. It may communicate with the second wall passage 114 through the passage 152 and the through passage 154 .

Alternatively, when the rear surface of the second retainer 150 and the frontmost lens unit 120 are in contact, ventilation grooves may be selectively formed on the rear surface and side surface of the second retainer 150 . One surface of the ventilation groove developed by the lens unit 120 may be blocked, and a flow path may be formed in a portion thereof. A plurality of such ventilation grooves may be provided, and the plurality of ventilation grooves are formed between the second retainer 150 and the inner circumferential surface of the case 110 and between the second retainer 150 and the foremost lens unit 120 to The first wall passage 112 and the second wall passage 114 may communicate with a space behind the cover lens 130 .

The second retainer 150 is described and illustrated as having a ventilation groove 152 at the front and a through channel 154 continuous with the ventilation groove 152, but is not necessarily limited thereto. Ventilation grooves may be provided on the side and rear surfaces of the second retainer 150 as described above, and the through passage 154 may be omitted.

The first wall channel 112 is connected to the inlet channel 202 of the holder 200 and communicates with each other, and the second wall channel 114 is connected to the outlet channel 204 of the holder 200 and communicates with each other. It can be.

The inlet passage 202 leads to the outside of the holder 200 and may be connected in communication with the fluid supply line 300 connected to the holder 200, and accordingly, the fluid supplied from the fluid supply line 300 (eg For example, low-humidity gas) may be supplied to the first wall passage 112 of the lens assembly 100 through the inlet passage 202 of the holder 200 .

In addition, the outlet passage 204 leads to the outside of the holder 200 and can be connected in communication with the fluid recovery line 400 connected to the holder 200, and thus circulates the inner space of the lens assembly 100. The fluid passing through the outlet passage 204 from the second wall passage 114 may be discharged to the fluid recovery line 400 .

That is, as shown in FIG. 5 , the fluid supplied from the fluid supply line 300 flows through the inlet passage 202, the first wall passage 112, the through passage 154, the vent 152, and the cover lens 130. ), the ventilation groove 152, the through passage 154, the second wall passage 114, and the outlet passage 204 in sequence, and then discharged to the fluid recovery line 400.

Alternatively, when the ventilation groove is formed at the rear of the second retainer 150, the fluid supplied from the fluid supply line 300 flows through the inlet channel 202, the first wall channel 112, the ventilation groove, and the cover lens 130. ), the ventilation groove, the second wall passage 114, and the outlet passage 204 are sequentially circulated, and then discharged to the fluid recovery line 400.

Referring to FIG. 4, the moisture inside the lens assembly 100 is dewed at the rear of the cover lens 130 disposed on the outermost front side of the lens assembly 100 by the cool air outside the lens assembly 100, (Condensation phenomenon) To reduce the sensing performance of the dehumidifying optical system lens module, as shown in FIG. 5 , when a low-humidity gas is supplied to the inside of the lens assembly 100, this condensation phenomenon can be reduced.

Specifically, as shown in FIG. 4 , in the case of, for example, a digital side mirror of a vehicle to which a dehumidifying optical system lens module is attached, the external temperature of the digital side mirror may decrease as the vehicle is driven. When the outside temperature decreases in this way, the temperature of the first retainer 140 and the cover lens 130 exposed to the outermost part of the members of the dehumidifying optical system lens module may decrease. Accordingly, dew (D) due to dew condensation may be formed on the rear side of the cover lens 130 and the ventilation groove 152 side. As shown in FIG. 5 , when a low-humidity gas is supplied to prevent such a dew condensation phenomenon, the dew (D) may be removed.

The low-humidity gas may be continuously supplied to the inner space of the dehumidifying optical system lens module in the above manner, or according to the user's selection, after the low-humidity gas is supplied to the inner space of the dehumidifying optical system lens module in the above manner, As such, the inlet passage 202 and the outlet passage 204 may be blocked with a stopper to provide an internal environment with low humidity.

7 is a cross-sectional view of a dehumidifying optical system lens module according to a second embodiment, FIG. 8 illustrates dew condensation in the dehumidifying optical system lens module shown in FIG. 7 , and FIG. 9 is a dehumidifying optical system lens module shown in FIG. 7 . shows the fluid flow in

7 to 9, the case 1110 of the dehumidifying optical system lens module according to the second embodiment is connected to the inner space of the lens assembly 1100 and is formed to communicate with the inner space. and a second wall channel 1114.

In the second embodiment of the present application, the first wall passage 1112 and the second wall passage 1114 include a recess formed on the inner circumferential surface of the tube of the case 1110, a spacer 1170 disposed in the tube, and a plurality of lens units 1120. ) is defined by

More specifically, at least two recesses (grooves) are formed on the inner circumferential surface of the case 1110, and these grooves extend from the rear side to the front end of the case 1110. A plurality of lens units 1120 are formed on the inner circumferential surface of the case 1110 ) and a spacer 1170 are disposed, and the lens units 1120 and the spacer 1170 may be disposed to contact the inner circumferential surface of the case 1110. Accordingly, the inner circumferential surface of the case 1110 is concave. One open surface of the recess formed to enter is blocked by the spacer 1170 and the surface of the lens unit 1120 that contacts the case 1110, so that a flow path can be formed. A first wall channel 1112 and a second wall channel 1114 are defined by the case 1110 , the spacer 1170 , and the lens unit 1120 .

The first wall channel 1112 and the second wall channel 1114 may communicate with a space formed by the separation between the front end of the case 1110 and the second retainer 1150 described in the first embodiment above. there is.

In addition, a ventilation hole 1152 is formed on the front surface of the second retainer 1150, and one surface of the ventilation hole 1152 opened by the cover lens 1130 is blocked to form a flow path. A plurality of such ventilation grooves 1152 may be provided, and a plurality of additionally formed to penetrate the second retainer 1150 so that the front space of the second retainer 1150 and the rear space of the second retainer 1150 communicate with each other. It may include a through passage 1154 of. That is, the plurality of through passages 1154 are connected to the ventilation grooves 1152 so that the space behind the cover lens 1130 and the space behind the second retainer 1150 can communicate with each other.

That is, the first wall channel 1112 may communicate with the space behind the cover lens 1130 through the through channel 1154 and the ventilation groove 1152, and the rear space of the cover lens 1130 may be connected to the ventilation groove. It may communicate with the second wall passage 1114 through the passage 1152 and the through passage 1154 .

The first wall passage 1112 is connected to the inlet passage 1202 of the holder 1200 so as to communicate with each other, and the second wall passage 1114 is also connected to the outlet passage 1204 of the holder 1200. can communicate with each other.

Specifically, the case 1110 may include a first connection passage 1116 and a second connection passage 1118 . The first connection passage 1116 and the second connection passage 1118 are formed to pass through the inner circumferential surface of the case 1110 and the outside of the case 1110, and may be formed on the outer circumferential surface of the case 1110, for example. .

The first connection passage 1116 may communicate the outer surface of the case 1110 and the first wall passage 1112 , and the second connection passage 1118 may communicate the outer surface of the case 1110 and the second wall passage 1112 . (1114) can be communicated.

Also, the first connection passage 1116 may be connected to the inlet passage 1202 formed in the holder 1200 disposed at the rear of the case 1110 . That is, the first connection passage 1116 may pass through the case 1110 and connect the first wall passage 1112 inside the case 1110 and the inlet passage 1202 outside the case 1110 .

Similarly, the second connection passage 1118 may also be connected to the outlet passage 1204 formed in the holder 1200 disposed at the rear of the case 1110, that is, the second connection passage 1118 may be connected to the case 1110. The second wall channel 1114 inside the case 1110 and the outlet channel 1204 of the case 1110 may be connected through the .

The inlet passage 1202 leads to the outside of the holder 1200 and may be connected in communication with the fluid supply line 1300 connected to the holder 1200, and accordingly, the fluid supplied from the fluid supply line 1300 (eg For example, low-humidity gas) may be supplied to the first connection passage 1116 and the first wall passage 1112 of the lens assembly 1100 through the inlet passage 1202 of the holder 1200 .

In addition, the outlet passage 1204 leads to the outside of the holder 1200 and can be connected in communication with the fluid recovery line 1400 connected to the holder 1200, thereby circulating the inner space of the lens assembly 1100. The fluid passing through the second connection passage 1118 and the outlet passage 1204 in the second wall passage 1114 may be discharged to the fluid recovery line 1400 .

That is, as shown in FIG. 9, the fluid supplied from the fluid supply line 1300 flows through the inlet passage 1202, the first connection passage 1116, the first wall passage 1112, the through passage 1154, and the ventilation groove ( 1152), the rear space of the cover lens 1130, the ventilation groove 1152, the through passage 1154, the second wall passage 1114, the second connection passage 1118, and the outlet passage 1204 in sequence. After that, it may be discharged to the fluid recovery line 1400.

Referring to FIG. 8, the moisture inside the lens assembly 1100 is dewed at the rear of the cover lens 1130 disposed at the outermost front of the lens assembly 1100 by the cool air outside the lens assembly 1100. (Condensation phenomenon) To reduce the sensing performance of the dehumidification optical system lens module, as shown in FIG. 9 , when low-humidity gas is supplied to the inside of the lens assembly 1100, this condensation phenomenon can be reduced.

Specifically, as shown in FIG. 8 , in the case of, for example, a digital side mirror of a vehicle to which a dehumidifying optical system lens module is attached, the external temperature of the digital side mirror may decrease as the vehicle is driven. When the outside temperature decreases, the temperature of the first retainer 1140 and the cover lens 1130 exposed to the outermost part of the members of the dehumidifying optical system lens module may decrease. Accordingly, dew (D) due to dew condensation may be formed on the rear side of the cover lens 1130 and the ventilation groove 1152 side. As shown in FIG. 9 , when a low-humidity gas is supplied to prevent such dew condensation, dew (D) may be removed.

The low-humidity gas may be continuously supplied to the inner space of the dehumidifying optical system lens module in the above manner, or according to the user's selection, after the low-humidity gas is supplied to the inner space of the dehumidifying optical system lens module in the above manner, the inlet passage 1202 and the outlet passage 1204 may be closed with a stopper to provide an internal environment with low humidity.

10 is a cross-sectional view of a dehumidifying optical system lens module according to a third embodiment, FIG. 11 illustrates dew condensation in the dehumidifying optical system lens module shown in FIG. 10, and FIG. 12 is a dehumidifying optical system lens module shown in FIG. shows the fluid flow in

10 to 12, the case 1110 of the dehumidifying optical system lens module according to the third embodiment is connected to the inner space of the lens assembly 1100 and is formed to communicate with the inner space. and a second wall channel 1114.

In the third embodiment of the present application, the first wall channel 2112 and the second wall channel 2114 are formed in a recess formed on the inner circumferential surface of the tube of the case 2110, a spacer 2170 disposed in the tube, and a plurality of lens units 2120. ) is defined by

More specifically, at least two recesses (grooves) are formed on the inner circumferential surface of the case 2110, and these grooves extend from the rear side to the front end of the case 2110. A plurality of lens units 2120 are formed on the inner circumferential surface of the case 2110. ) and a spacer 2170 are disposed, and the lens units 2120 and the spacer 2170 may be disposed to contact the inner circumferential surface of the case 2110. Accordingly, the inner circumferential surface of the case 2110 is concave. One open surface of the recess formed to be entered may be blocked by the spacer 2170 and the surface of the lens unit 2120 in contact with the case 2110, so that a flow path may be formed. A first wall channel 2112 and a second wall channel 2114 are defined by the case 2110 , the spacer 2170 , and the lens unit 2120 .

The first wall channel 2112 and the second wall channel 2114 may communicate with a space formed by the separation between the front end of the case 2110 and the second retainer 2150 described in the first embodiment above. there is.

In addition, a ventilation hole 2152 is formed on the front surface of the second retainer 2150, and one surface of the ventilation hole 2152 opened by the cover lens 2130 may be blocked to form a flow path. A plurality of such ventilation grooves 2152 may be provided, and a plurality of additionally formed to pass through the second retainer 2150 so that the front space of the second retainer 2150 and the rear space of the second retainer 2150 communicate with each other. It may include a through passage 2154 of. That is, the plurality of through passages 2154 are connected to the ventilation grooves 2152 so that the space behind the cover lens 2130 and the space behind the second retainer 2150 can communicate with each other.

That is, the first wall channel 2112 may communicate with the space behind the cover lens 2130 through the through channel 2154 and the ventilation groove 2152, and the rear space of the cover lens 2130 may be connected to the ventilation groove. 2152 and the through channel 2154 may communicate with the second wall channel 2114 .

Referring back to FIG. 10 , the case 2110 may be formed to be surrounded by the holder 2200 and the first retainer 2140 . Specifically, the first retainer 2140 is formed to surround a portion of the front outer circumferential surface of the case 2110, and the holder 2200 is formed to surround a portion of the rear outer circumferential surface of the case 2110.

The front end of the holder 2200 and the rear end of the first retainer 2140 may be disposed spaced apart from each other, and each is coupled to the case 2110 so that a contact portion with the case 2110 is sealed. 2190) can be attached.

For example, the closing members 2180 and 2190 may be a curable material such as epoxy, and the closing members 2180 and 2190 may be a first closing member disposed on a contact surface between the first retainer 2140 and the case 2110 ( 2180) and a second closing member 2190 disposed on a contact surface between the holder 2200 and the case 2110.

Specifically, the inner circumferential surface of the first retainer 2140 and the outer circumferential surface of the case 2110 each have a screw thread so as to contact each other and are screwed together, and the inner circumferential surface of the holder 2200 and the outer circumferential surface of the case 2110 are also provided with a screw thread, respectively. They can then come into contact with each other and be screwed together. At least one of the inner circumferential surface of the first retainer 2140 and the outer circumferential surface of the case 2110 is disposed with the first finishing member 2180 before being cured, and the inner circumferential surface of the holder 2200 and the outer circumferential surface of the case 2110 are also cured. The second closing member 2190 prior to becoming may be disposed.

These closing members 2180 and 2190 move from the contact surface to the outside of the contact surface according to the combination of each member, that is, the combination of the first retainer 2140 and the case 2110 and the combination of the holder 2200 and the case 2110. can be pushed As shown in FIG. 10, the first closure member 2180 pushed outward from the contact surface is then cured to form a seal between the holder 2200 and the case 2110, respectively, and the second closure member 2190 ) may form a seal between the first retainer 2140 and the case 2110 .

Referring back to FIG. 11 , the first wall channel 2112 may be connected to the inlet channel 2202 of the holder 2200 and communicate with each other, and the second wall channel 2114 may also be an outlet of the holder 2200. It is connected to the flow path 2204 and can communicate with each other.

Specifically, the case 2110 may include a first connection passage 2116 and a second connection passage 2118 . The first connection passage 2116 and the second connection passage 2118 are formed to pass through the inner circumferential surface of the case 2110 and the outside of the case 2110, and may be formed on the outer circumferential surface of the case 2110, for example. .

The first connection passage 2116 may communicate the outer surface of the case 2110 and the first wall passage 2112 , and the second connection passage 2118 may connect the outer surface of the case 2110 and the second wall passage 2112 . (2114) can be communicated.

Also, the first connection passage 2116 may be connected to an inlet passage 2202 formed in the holder 2200 disposed at the rear of the case 2110 . That is, the first connection passage 2116 may pass through the case 2110 and connect the first wall passage 2112 inside the case 2110 and the inlet passage 2202 outside the case 2110 .

Similarly, the second connection passage 2118 may also be connected to the outlet passage 2204 formed in the holder 2200 disposed at the rear of the case 2110, that is, the second connection passage 2118 may be connected to the case 2110. The second wall channel 2114 inside the case 2110 and the outlet channel 2204 of the case 2110 may be connected through the .

The inlet passage 2202 leads to the outside of the holder 2200 and may be connected in communication with the fluid supply line 2300 connected to the holder 2200, and accordingly, the fluid supplied from the fluid supply line 2300 (eg For example, low-humidity gas) may be supplied to the first connection passage 2116 and the first wall passage 2112 of the lens assembly 2100 through the inlet passage 2202 of the holder 2200 .

In addition, the outlet flow path 2204 leads to the outside of the holder 2200 and can be connected in communication with the fluid recovery line 2400 connected to the holder 2200, thereby circulating the inner space of the lens assembly 2100. The fluid passing through the second connection passage 2118 and the outlet passage 2204 in the second wall passage 2114 may be discharged to the fluid recovery line 2400 .

That is, as shown in FIG. 12, the fluid supplied from the fluid supply line 2300 flows through the inlet passage 2202, the first connection passage 2116, the first wall passage 2112, the through passage 2154, and the ventilation groove ( 2152), the rear space of the cover lens 2130, the ventilation groove 2152, the through passage 2154, the second wall passage 2114, the second connection passage 2118, and the outlet passage 2204 in sequence. After that, it may be discharged to the fluid recovery line 2400.

Referring to FIG. 11, the moisture inside the lens assembly 2100 is dewed at the rear of the cover lens 2130 disposed at the outermost front of the lens assembly 2100 by the cool air outside the lens assembly 2100. (Condensation phenomenon) To reduce the sensing performance of the dehumidification optical system lens module, as shown in FIG. 12 , when low-humidity gas is supplied to the inside of the lens assembly 2100, this condensation phenomenon can be reduced.

Specifically, as shown in FIG. 11 , in the case of, for example, a digital side mirror of a car to which a dehumidifying optical system lens module is attached, the external temperature of the digital side mirror may decrease as the vehicle is driven. When the outside temperature decreases, the temperature of the first retainer 2140 and the cover lens 2130 exposed to the outermost part of the members of the dehumidifying optical system lens module may decrease. Accordingly, dew (D) due to dew condensation may be formed on the rear side of the cover lens 2130 and the ventilation groove 2152 side. As shown in FIG. 12 , when a low-humidity gas is supplied to prevent such dew condensation, dew (D) may be removed.

The low-humidity gas may be continuously supplied to the inner space of the dehumidifying optical system lens module in the above manner, or according to the user's selection, after the low-humidity gas is supplied to the inner space of the dehumidifying optical system lens module in the above manner, the inlet passage 2202 and the outlet passage 2204 may be closed with a stopper to provide an internal environment with low humidity.

13 is a cross-sectional view of a dehumidifying optical system lens module according to a fourth embodiment.

Referring to FIG. 13, the first retainer 3140 of the dehumidifying optical system lens module according to the fourth embodiment has a first inner end 3144 on which a cover lens 3130 is seated and a second retainer 3150 are seated therein. A second inner end 3146 and a third inner end 3148 coupled to the outer circumferential surface of the case 3110 may be provided.

Screw threads may be provided on the second inner end 3146 and the third inner end 3148 .

The second retainer 3150 seated on the second inner end 3146 may include a fastening element 3156 and a pillar element 3158 . The fastening element 3156 is formed in an annular shape, and the pillar element 3158 may be formed to protrude backward from the fastening element 3156.

The pillar element 3158 may protrude backward from at least two parts of the rear surface of the fastening element 3156, or may protrude annularly from the rear surface of the fastening element 3156. The pillar element 3158 may also protrude with a smaller outer diameter than the inner diameter of the case 3110 and be introduced into a conduit in the case 3110 .

A screw thread formed to correspond to and engage with a screw thread formed on the second inner end 3146 may be provided on the outer circumferential surface of the fastening element 3156, and accordingly, the second retainer 3150 and the first retainer 3140 are screwed can be combined The outer circumferential surface of the case 3110 may be matched and disposed behind the second inner end 3146 .

Specifically, the case 3110 may include a first outer end 31102 and a second outer end 31104 on an outer circumferential surface. The outer diameter of the first outer end 31102 may match the inner diameter of the third inner end 3148, and the outer diameter of the second outer end 31104 may match a portion of the inner diameter of the second inner end 3146. . That is, the outer diameter of the first outer end 31102 may be larger than the outer diameter of the second outer end 31104.

The first outer end 31102 and the second inner end 3146 may be in contact with each other, and a screw thread is provided in front of the second outer end 31104 so that a screw thread corresponding to the second outer end 31104 is provided. It may be screwed with the third inner end 3148. Accordingly, the case 3110 and the first retainer 3140 may be coupled.

The outer diameter of the pillar element 3158 extending from the rear surface of the fastening element 3156 is smaller than the inner diameter of the case 3110, and thus the pillar element 3158 can be inserted into the conduit of the case 3110.

That is, the pillar element 3158 protrudes from the fastening element 3156 and is inserted into the case 3110 according to the coupling between the first retainer 3140 and the case 3110, and the lens units positioned in the conduit of the case 3110 and, in particular, the first lens unit 3122 positioned at the frontmost of the lens units.

According to the structure described above, the second retainer 3150 , that is, the fastening element 3156 and the pillar element 3158 may be spaced apart from the case 3110 . Specifically, the case 3110 is coupled to the first retainer 3140, and the rear of the pillar element 3158 of the second retainer 3150, the front end of the case 3110, and the pillar element of the second retainer 3150 As shown in FIG. 13 , the outer circumferential surface of 3158 and the inner circumferential surface of case 3110 may be spaced apart from each other.

Such a structure minimizes the contact between the members when the first retainer 3140 and the case 3110 are coupled, thereby reducing an accumulation tolerance caused by cumulative contact between the members.

According to this structure, the external air or injected fluid flows through the inlet passage 3202, the first connection passage 3116, the first wall passage 3112, the rear space of the second retainer 3150, the through passage 3154, It can be supplied to the rear of the cover lens 4130 through the ventilation groove 3152, and the fluid behind the cover lens 4130 is supplied to the ventilation groove 3152, the through passage 3154, and the rear space of the second retainer 3150. , It may be discharged to the outside via the second wall channel 3114, the second connection channel 3118, and the outlet channel 3204.

14 is a cross-sectional view of a dehumidifying optical system lens module according to a fifth embodiment.

Referring to FIG. 14 , the dehumidifying optical system lens module according to the fifth embodiment may have a structure similar to that of the fourth embodiment. The first wall passage 3112 and the second wall passage 3114 of the dehumidifying optical system lens module according to the fourth embodiment are formed on the inner circumferential surface of the case 3110, and the first wall passage 4112 and the second wall passage 4112 of the fifth embodiment The two-wall passage 4114 may be formed on an outer circumferential surface of the case.

That is, the second retainer 4150 of the dehumidifying optical system lens module according to the fifth embodiment may include a fastening element 4156 formed in an annular shape and a pillar element 4158 protruding backward from the fastening element 4156. there is.

The cover lens 4130 may be positioned within the first inner end 4144 of the first retainer 4140, and the second retainer 4150 screwed to the second inner end 4146 of the first retainer 4140. The position can be fixed by the combination of .

A part of the first retainer 4140 and the pillar element 4158 of the second retainer 4150 may protrude to the rear of the first retainer 4140 and the second retainer 4140 fixed in this way, and the first retainer ( 4140) and the case 4110 are coupled, the pillar element 4158 may be inserted into the inner circumferential surface of the case and come into contact with the front of the first lens unit 4122 positioned at the frontmost position in the case 4110. The outer diameter of the pillar element 4158 may be smaller than the inner diameter of the case 4110 , and thus the pillar element 4158 may be spaced apart from the case 110 . Specifically, the case 4110 is coupled to the first retainer 4140, and the rear of the pillar element 4158 of the second retainer 4150 and the front end of the case 3110 and the pillar element of the second retainer 4150 ( As shown in FIG. 14 , the outer circumferential surface of 4158 and the inner circumferential surface of case 4110 may be spaced apart from each other.

Such a structure minimizes contact between the members when the first retainer 4140 and the case 4110 are coupled, thereby reducing an accumulation tolerance caused by cumulative contact between the members.

15 is a partial cross-sectional view of a dehumidifying optical system lens module according to a sixth embodiment.

Referring to FIG. 15 , the second retainer 5150 of the dehumidifying optical system lens module according to the sixth embodiment may include a protruding portion 5156, and the protruding portion 5156 is an annular second retainer 5150. It may locally protrude from a part of the inner circumferential surface of the second retainer 5150 in the direction of the defined virtual central axis.

The protruding portion 5156 of the second retainer 5150 may contact at least one lens unit. An inner diameter of the protruding portion 5156 of the second retainer 5150 may be smaller than an outer diameter of the first lens unit 5122 , which is a lens unit positioned most forward among the plurality of lens units. Also, the first lens unit 5122 may be positioned to protrude forward from the case 5110, and the inner diameter of the second retainer 5156 may be greater than or equal to the outer diameter of the first lens unit 5122.

Accordingly, the front portion of the first lens unit 5122 may be disposed to pass through the inner circumferential surface of the second retainer 5150 and protrude from the inner circumferential surface of the second retainer 5150 within the opening of the second retainer 5150. The position may be fixed by contacting the protruding portion 5156. In this case, the front end of the case 5110 and the rear surface of the second retainer 5150 may be spaced apart from each other. That is, a space through which fluid can flow may be formed between the rear of the second retainer 5150 and the front end of the case 5110 .

A part of the second retainer 5150 protrudes forward or a ventilation groove is formed on the front surface, so that the fluid passing through the first wall passage and the second wall passage 5114 passes through the through passage 5154 of the second retainer 5150. It may pass through the front of the second retainer 6150 and be supplied to the rear of the cover lens 5130, or may be exhausted from the rear of the cover lens 5130.

The dehumidifying optical system lens module described above is not limited to the configuration and method of the above-described embodiments, but the above embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made. .

As described above, the embodiments of the present invention have been described with specific details such as specific components and limited embodiments and drawings, but these are provided only to help a more general understanding of the present invention, and the present invention is limited to the above embodiments. It is not, and those skilled in the art can make various modifications and variations from these descriptions. For example, the described techniques may be performed in an order different from the described method, and/or components of the described structure, device, etc. may be combined or combined in a different form from the described method, or other components or equivalents may be used. Appropriate results can be achieved even if substituted or substituted by Therefore, the spirit of the present invention should not be limited to the described embodiments and should not be determined, and all things equivalent or equivalent to the claims as well as the following claims belong to the scope of the present invention.

100: lens assembly
110: case
112: first wall passage
114: second wall passage
120: lens unit
130: cover lens
140: first retainer
142: protruding jaw
144: first inner end
146: second inner end
148: third inner end
150: second retainer
152: ventilation groove
154: through passage
160: sealing member
170: spacer
180: finishing member
200: holder
202: Inlet Euro
204: outlet euro
300: fluid supply line
400: fluid recovery line
500: stopper
1100: lens assembly
1110: case
1112: first wall passage
1114: second wall passage
1116: first connection flow path
1118: second connection flow path
1120: lens unit
1130: cover lens
1140: first retainer
1142: protruding jaw
1144: first inner end
1146: second inner end
1148: third inner end
1150: second retainer
1152: ventilation groove
1154: Through Euro
1160: sealing member
1170: Spacer
1180: finishing member
1200: holder
1202: Inlet Euro
1204: outlet euro
1300: fluid supply line
1400: fluid recovery line
2100: lens assembly
2110: case
2112: first wall passage
2114: second wall passage
1116: first connection flow path
1118: second connection flow path
2120: lens unit
2130: cover lens
2140: first retainer
2142: protruding jaw
2144: first inner end
2146: second inner end
2148: third inner end
2150: second retainer
2152: ventilation groove
2154: Through Euro
2160: sealing member
2170: Spacer
2180: first finishing member
2190: second finishing member
2200: holder
2202: Inlet Euro
2204: Outlet Euro
2300: fluid supply line
2400: fluid recovery line
3110: case
31102: first outer end
31104: second outer end
3112: first wall passage
3114: second wall passage
3116: first connection flow path
3118: second connection flow path
3122: first lens unit
3130: cover lens
3140: first retainer
3144: first inner end
3146: second inner end
3148: third inner end
3150: second retainer
3152: ventilation groove
3154: Through Euro
3156: fastening element
3158: column element
3202: Inlet Euro
3204 : Outlet Euro
Case (4110)
First lens unit 4122
4110: case
4112: first wall passage
4114: second wall passage
4122: first lens unit
4130: cover lens
4140: first retainer
4144: first inner end
4146: second inner end
4150: second retainer
4152: ventilation groove
4154: Through Euro
4156: fastening element
4158: column element
5110: case
5114: second wall passage
5122: first lens unit
5130: cover lens
5150: second retainer
5154: Through Euro
5156: protruding part
D: Dew

Claims (10)

a lens assembly having a plurality of lens units aligned along an axial direction therein; and
A holder arranged to surround and fix at least a portion of the lens assembly and communicating with the inner space of the lens assembly; includes,
The lens assembly,
a case formed in a tubular shape, having the plurality of lens units positioned therein, and having a first wall channel and a second wall channel communicating with the inner space;
a cover lens disposed in front of the case;
a retainer surrounding a portion of the front edge of the cover lens and coupled to the case; and
And a sealing member disposed between the cover lens and the retainer,
the holder,
an inlet passage communicating with a first wall passage of the case; and
Including; outlet passage communicating with the second wall passage of the case,
The inlet flow path, the first wall flow path, the back of the cover lens, the second wall flow path, and the outlet flow path circulate outside air that enters the inlet flow path and then sequentially passes through the outlet flow path and is discharged out of the lens module. form a flow
The retainer,
a first retainer formed in a tubular shape to cover a side surface of the cover lens and a front portion of the case; and
A second retainer formed in an annular shape, having an outer circumferential surface engaged with an inner circumferential surface of the first retainer, and disposed behind the cover lens;
The second retainer is coupled to the first retainer to support the cover lens in the first retainer from the rear of the cover lens to fix the position of the cover lens;
The second retainer,
a fastening element engagingly engaged with an inner circumferential surface of the first retainer, and a pillar element protruding from the fastening element and being introduced into a conduit of the case to contact a lens unit positioned at the frontmost of the plurality of lens units; The rear of the pillar element and the frontmost end of the case, the outer circumferential surface of the pillar element and the inner circumferential surface of the case are disposed spaced apart from each other, and having a plurality of ventilation grooves communicating with the first wall passage and the second wall passage , dehumidification optical system lens module.
delete According to claim 1,
The first retainer,
a protruding jaw protruding in a centrifugal direction from an inner circumferential surface of the first retainer in front of the first retainer;
a first inner end having a larger diameter than the diameter of the opening formed by the protruding jaw and formed behind the protruding jaw in an axial direction of the first retainer;
a second inner end having a larger diameter than that of the first inner end and formed behind the first inner end in an axial direction of the first retainer; and
a third inner end having a larger diameter than that of the second inner end and formed behind the second inner end in an axial direction of the first retainer;
to provide,
The outer diameter of the cover lens corresponds to the diameter of the first inner end,
the cover lens is inserted into an area surrounded by the first inner end of the first retainer;
The diameter of the outer circumferential surface of the second retainer corresponds to the diameter of the second inner end,
the second retainer is inserted into an area surrounded by the second inner end of the first retainer and coupled with the first retainer;
The outer diameter of at least a portion of the case corresponds to the diameter of the third inner end,
At least a portion of the case is inserted into an area surrounded by the third inner end of the first retainer and coupled to the first retainer, the dehumidifying optical system lens module.
According to claim 3,
The second inner end of the first retainer has a screw thread,
A screw thread corresponding to the screw thread of the second inner end is formed on an outer circumferential surface of the second retainer, so that the first retainer and the second retainer are screwed together.
According to claim 1,
The second retainer has a plurality of through passages,
The plurality of ventilation grooves communicate with the plurality of through passages and are formed on the second retainer in the direction of the cover lens;
The plurality of through passages communicate with the first wall passage and the second wall passage, respectively.
According to claim 5,
The second retainer is disposed in front of the case,
The case and the second retainer are spaced apart from each other,
The plurality of through passages communicate with the first wall passage and the second wall passage through a space formed between the front of the case and the rear of the second retainer.
According to claim 1,
The case is surrounded by the retainer and the holder,
The first wall passage and the second wall passage are defined by a recess formed on an outer circumferential surface of the case, and inner circumferential surfaces of the holder and the retainer in contact with the outer circumferential surface of the case.
According to claim 1,
The case includes a first connection passage and a second connection passage penetrating at least a portion of the case in a radial direction;
The plurality of lens units are aligned along the inner circumferential surface of the tubular case,
The lens assembly further includes a spacer disposed between the plurality of lens units to separate the plurality of lens units from each other,
The first wall channel and the second wall channel are defined by a recess formed on an inner circumferential surface of the case, the spacer disposed in the case, and the plurality of lens units;
The first connection passage connects the first wall passage and the inlet passage,
The second connection passage connects the second wall passage and the outlet passage, the dehumidifying optical system lens module.
According to claim 1,
a fluid supply line connected to the inlet passage; and
It further includes; a fluid recovery line connected to the outlet passage;
The fluid supply line supplies low-humidity gas to the holder,
The fluid recovery line recovers the gas circulating through the lens assembly through the holder and discharges it to the outside.
According to claim 1,
The holder further comprises a stopper for closing the inlet passage and the outlet passage, respectively, the dehumidifying optical system lens module.

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