CN215006027U

CN215006027U - Lens, image pickup device and vehicle

Info

Publication number: CN215006027U
Application number: CN202121480187.1U
Authority: CN
Inventors: 乐宇明; 阮桂; 任婷婷; 其他发明人请求不公开姓名
Original assignee: Tianjin OFilm Opto Electronics Co Ltd
Current assignee: Jiangxi Oufei Optics Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-12-03
Anticipated expiration: 2031-06-30

Abstract

The utility model discloses a camera lens, camera device and vehicle, the camera lens includes: the lens comprises a lens barrel, a heat sealing ring and a fixing device, wherein one end of the lens barrel is provided with a fixing surface, the heat sealing ring is arranged around the fixing surface, and the heat sealing ring extends towards the direction far away from the fixing surface along the optical axis direction of the lens barrel; the optical filter, one side and the stationary plane laminating of optical filter, the one end that the stationary plane was kept away from to the heat-seal ring can be buckled to the direction that is close to the optical filter to make the heat-seal ring become the state of buckling by the state of standing vertically, when the heat-seal ring was in the state of buckling, the heat-seal ring becomes the bending part, the optical filter centre gripping is between kink and stationary plane, and respectively with kink and stationary plane butt, the kink has sticky part, be provided with glue in the sticky part, with the butt department of sealed kink and optical filter. The application provides a camera lens can avoid the condition that the light filter drops from the lens cone to take place, also can avoid steam or dust etc. to get into the inside condition of camera lens through the gap between light filter and the lens cone and take place.

Description

Lens, image pickup device and vehicle

Technical Field

The utility model relates to a camera device technical field especially relates to a camera lens, camera device and vehicle.

Background

In the related art, a lens generally includes a lens barrel and a filter mounted on the lens barrel, however, after the conventional lens is used for a long time, the filter may fall off the lens barrel, or moisture or dust may enter the inside of the lens through a gap between the filter and the lens barrel, which seriously affects the normal use of the lens.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a camera lens, camera device and vehicle, it can avoid steam or the inside condition emergence of entering camera lens such as dust.

In order to achieve the above object, in one aspect, the present invention discloses a lens barrel, including:

the lens comprises a lens barrel, wherein one end of the lens barrel is provided with a fixing surface, a heat seal ring is arranged around the fixing surface, the heat seal ring extends along the direction of an optical axis of the lens barrel towards the direction far away from the fixing surface, and the heat seal ring comprises a heat seal ring outer wall, a heat seal ring inner wall and a heat seal ring end face connected between the heat seal ring outer wall and the heat seal ring inner wall;

the optical filter is characterized in that one side of the optical filter is attached to the fixing surface, one end, far away from the fixing surface, of the heat seal ring can be bent towards the direction close to the optical filter, so that the heat seal ring is changed from an upright state to a bent state, when the heat seal ring is in the bent state, the heat seal ring forms a bent part, the optical filter is clamped between the bent part and the fixing surface and is respectively abutted against the bent part and the fixing surface, the bent part is provided with an adhesive part, and the adhesive part is provided with glue to seal the abutted part of the bent part and the optical filter.

Because the heat-seal ring is arranged around the circumference of the fixing surface of the lens cone and extends towards the direction far away from the fixing surface along the optical axis direction of the lens cone, when the heat-seal ring is in an upright state, a semi-closed bowl-shaped space can be formed between the heat-seal ring and the fixing surface, the fixing surface is equivalent to a bowl bottom, and the heat-seal ring is equivalent to a bowl wall. When the heat-sealing ring is in the bent state, specifically, after the end of the heat-sealing ring away from the fixing surface is bent in the direction close to the optical filter to form the bent portion, it can be understood that a spacing space can be formed between the bent portion and the fixing surface, and the optical filter can be clamped in the spacing space between the bent portion and the fixing surface. It can be understood that, because the bending portion is formed by bending the heat-sealing ring towards the direction close to the optical filter, the strength of the bending portion is high, and the bending portion is not easily affected by high temperature, therefore, the optical filter can be firmly fixed between the bending portion and the fixing surface by clamping the optical filter in the spacing space between the bending portion and the fixing surface, and the optical filter can be prevented from falling off from the lens barrel.

In addition, the bent part is provided with the adhesive part, and the abutting part of the bent part and the optical filter can be sealed by glue by arranging the glue on the adhesive part, so that the situation that water vapor or dust enters the inside of the lens through a gap between the optical filter and the lens barrel can be avoided.

Optionally, when the heat seal ring is in the bent state, a distance between the side wall of the optical filter and the end face of the heat seal ring in the radial direction of the heat seal ring is w, a thickness of the optical filter is RI, and w > 0.3 RI.

The applicant researches and discovers that when the thickness of the optical filter is RI, the distance w between the side wall of the optical filter and the end face of the heat-sealing ring in the radial direction of the heat-sealing ring is larger than 0.3RI, so that the optical filter can be well fixed between the bent part and the fixing surface by the bent part 0, and the optical filter can be prevented from falling off the lens barrel.

Optionally, when the heat seal ring is in the upright state, the junction of the end face of the heat seal ring and the outer wall of the heat seal ring forms an outer chamfer.

When the junction of heat-seal ring terminal surface and heat-seal ring outer wall formed outer chamfer, can be so that the heat-seal ring roughly is the toper structure, specifically, along the direction of keeping away from the stationary plane, the external diameter of heat-seal ring will reduce gradually, like this, for follow-up one end of keeping away from the stationary plane with the heat-seal ring to the direction of being close to the light filter buckle ready, be more useful for and keep away from the one end of stationary plane with the heat-seal ring and buckle to the direction of being close to the light filter, make the operation that becomes the bending state with the heat-seal ring by the state of not buckling become succinct.

Optionally, the outer chamfer is an oblique angle, when the heat seal ring is in the upright state, an included angle between the oblique edge of the oblique angle and an extension line of the outer wall of the heat seal ring is alpha, and alpha is more than or equal to 15 degrees and less than or equal to 20 degrees.

When the included angle between the bevel edge of the bevel angle and the extension line of the outer wall of the heat seal ring is alpha and alpha is more than or equal to 15 degrees and less than or equal to 20 degrees, the applicant researches and finds that the included angle can enable the heat seal ring to have a better guiding effect on the one hand, and the operation of changing the unbent state of the heat seal ring into the bending state becomes concise. On the other hand, the angle can also ensure that the thickness of the whole heat seal ring in the radial direction is not too thin, so that the strength of the heat seal ring is strong, and the situation that the optical filter falls off from the lens barrel due to the fact that the strength of a bending part formed by the heat seal ring is too weak after the heat seal ring is in a bending state can be avoided.

Optionally, when the heat seal ring is in an upright state, a distance between a midpoint of a bevel edge of the outer chamfer and an inner wall of the heat seal ring is d, and d is greater than or equal to 0.4mm and less than or equal to 0.6 mm.

When the distance between the middle point of the bevel edge of the outer chamfer and the inner wall of the heat seal ring is d, the applicant researches and discovers that the strength of the whole heat seal ring can be ensured to be stronger by enabling d to be more than or equal to 0.4mm and less than or equal to 0.6mm, and further the situation that the optical filter falls off from the lens barrel due to the fact that the strength of a bending part formed by the heat seal ring is too weak after the optical filter is in a bending state can be avoided.

Optionally, the joint of the end face of the heat seal ring and the inner wall of the heat seal ring forms an inner chamfer.

Through making the junction of heat-seal ring terminal surface and heat-seal ring inner wall form interior chamfer, on the one hand, can avoid the junction of seal ring terminal surface and heat-seal ring inner wall to form sharp-pointed edge, and then can make whole heat-seal ring can not appear the condition of scratch user. On the other hand, when the heat seal ring is in a bent state, a gap can be formed at the contact position of the inner chamfer and the optical filter, the gap can be used for containing more glue, and then the effect of better sealing the gap between the optical filter and the lens barrel can be achieved, so that the situation that water vapor or dust and the like enter the inside of the lens through the gap between the optical filter and the lens barrel can be better avoided.

Optionally, the optical filter has a thickness RI, the optical filter has a first surface and a second surface that are opposite to each other, the first surface is a surface that is abutted to the fixing surface, when the heat seal ring is in the upright state, an axial distance between an end surface of the heat seal ring and the second surface is b, and b is greater than or equal to 0.8RI and less than or equal to 1.2 RI.

When the thickness of the optical filter is RI and the axial distance between the end face of the heat seal ring and the second face is b, the applicant researches and discovers that when the heat seal ring is in a bent state, the bent part formed by the heat seal ring can well fix the optical filter between the bent part and the fixed face, and further the optical filter can be prevented from falling off the lens barrel.

Optionally, a gap between the inner wall of the heat seal ring and the side wall of the optical filter is e, and e is greater than or equal to 0.03mm and less than or equal to 0.08 mm.

When the gap between the inner wall of the heat seal ring and the side wall of the optical filter is e, the applicant researches and discovers that the gap between the inner wall of the heat seal ring and the side wall of the optical filter is not more than 0.03mm and not more than 0.08mm, so that the situation that water vapor or dust enters the lens due to the overlarge gap between the inner wall of the heat seal ring and the side wall of the optical filter can be avoided. On the other hand, the situation that the filter is difficult to assemble due to the fact that the gap between the inner wall of the heat seal ring and the side wall of the filter is too small can not occur.

Optionally, the weight of the glue is g, and g is more than or equal to 0.7mg and less than or equal to 1.5 mg.

The applicant researches and discovers that when the weight of the glue is g, the g is more than or equal to 0.7mg and less than or equal to 1.5mg, on one hand, the sealing of the abutted part of the bent part and the optical filter can be well realized, and on the other hand, the waste of the glue is not caused.

Optionally, when the heat seal ring is in the bent state, the glue forms a glue ring at the end face of the heat seal ring and at the position of the optical filter close to the end face of the heat seal ring, the ring width of the glue ring is k, and k is greater than or equal to 0.6mm and less than or equal to 1 mm.

Through making glue form the glue ring in heat-seal ring terminal surface and the light filter department that is close to the heat-seal ring terminal surface, when the ring width of glue ring was k, through making 0.6mm be less than or equal to k be less than or equal to 1mm, on the one hand, the glue ring can be fine realize the sealed of kink and light filter butt department, on the other hand, can not cause the waste to glue yet.

On the other hand, the utility model discloses a camera device, camera device includes above-mentioned one side the camera lens.

Because the kink of camera lens is formed by the direction bending that the heat-seal ring is close to the optical axis, intensity is higher, and is difficult to receive the influence of high temperature, consequently, through with the light filter centre gripping in the spacing space between kink and stationary plane, can make the very firm fixing of light filter between kink and stationary plane, and then can avoid the condition that the light filter dropped from the lens cone to take place. In addition, because the abutting part of the bending part and the optical filter is sealed by glue, the situation that water vapor or dust enters the inside of the lens through the gap between the optical filter and the lens barrel can be avoided.

Based on this, when camera device includes the camera lens, can make camera device more durable, and can not appear because the inside condition emergence that gets into steam or dust etc. and influence camera device's shooting quality of lens cone for camera device's shooting effect is better.

In another aspect, the present invention discloses a vehicle, including the camera device of the above another aspect.

Because camera device is more durable, and can not appear because the inside condition emergence that gets into steam or dust etc. and influence camera device's shooting quality of lens cone for camera device's shooting effect is better. Based on this, when the vehicle includes camera device, can make the life of vehicle longer, the shooting effect is better.

Compared with the prior art, the beneficial effects of the utility model reside in that:

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a sectional view (hatching is not shown) of a lens barrel according to an embodiment of the present application with a heat seal ring in an upright state;

fig. 2 is a sectional view (hatching is not shown) of the lens barrel in fig. 1 with the heat seal ring in a folded state;

fig. 3 is a partially enlarged view of the lens in fig. 2 at a position a;

fig. 4 is a partially enlarged view of the lens in fig. 1 at a position B;

fig. 5 is a sectional view (hatching is not shown) of another lens barrel provided in an embodiment of the present application with a heat seal ring in an erected state;

fig. 6 is a partially enlarged view of the lens in fig. 5 at a position C;

fig. 7 is a schematic structural diagram of an image pickup apparatus according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a vehicle according to an embodiment of the present application.

Description of reference numerals:

1-a lens barrel; 11-a fixed surface; 12-heat seal ring; 120-bending part; 121-heat sealing the outer wall of the ring; 122-inner wall of heat seal ring; 123-end face of heat seal ring;

2-an optical filter; 21-a side wall; 22-a first side; 23-a second face;

3-glue; 31-glue ring;

z-optical axis direction; r 1-outer chamfer; r 2-inner chamfer; m-midpoint;

100-lens; 200-camera device.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The technical solution of the present application will be further described with reference to the following embodiments and accompanying drawings.

Fig. 1 is a sectional view (hatching is not shown) of a lens provided in an embodiment of the present application when a heat seal ring is in an upright state, fig. 2 is a sectional view (hatching is not shown) of the lens in fig. 1 when the heat seal ring is in a folded state, and fig. 3 is a partially enlarged view of the lens in fig. 2 at a position a.

Referring to fig. 1, 2 and 3, the lens barrel includes a lens barrel 1 and a filter 2. Wherein, lens cone 1's one end has stationary plane 11, is provided with heat-seal ring 12 around the a week of stationary plane 11, and heat-seal ring 12 extends towards the direction of keeping away from stationary plane 11 along lens cone 1's optical axis direction Z, and heat-seal ring 12 includes heat-seal ring outer wall 121, heat-seal ring inner wall 122 and connects the heat-seal ring terminal surface 123 between heat-seal ring outer wall 121 and heat-seal ring inner wall 122. One side of the optical filter 2 is attached to the fixing surface 11, one end of the heat-sealing ring 12, which is far away from the fixing surface 11, can be bent towards the direction close to the optical filter 2, so that the heat-sealing ring 12 can be changed from an upright state to a bent state, when the heat-sealing ring 12 is in the bent state, the heat-sealing ring 12 forms a bent portion 120, the optical filter 2 is clamped between the bent portion 120 and the fixing surface 11 and respectively abutted against the bent portion 120 and the fixing surface 11, the bent portion 120 is provided with an adhesive part, and the adhesive part is provided with glue 3 so as to seal the abutted part of the bent portion 120 and the optical filter 2.

In the embodiment of the present application, since the heat seal ring 12 is disposed around a circumference of the fixing surface 11 of the lens barrel 1 and extends along the optical axis direction Z of the lens barrel 1 toward a direction away from the fixing surface 11, when the heat seal ring 12 is in an upright state, a semi-closed "bowl" shaped space can be formed between the heat seal ring 12 and the fixing surface 11, the fixing surface 11 is equivalent to a "bowl bottom", and the heat seal ring 12 is equivalent to a "bowl wall". After the heat-seal ring 12 is bent, specifically, after the end of the heat-seal ring 12 away from the fixing surface 11 is bent in the direction of approaching the optical filter 2 to form the bent portion 120, it can be understood that a spacing space can be formed between the bent portion 120 and the fixing surface 11, and the optical filter 2 can be clamped in the spacing space between the bent portion 120 and the fixing surface 11. It can be understood that, since the bending portion 120 is formed by bending the heat-sealing ring 12 toward the direction close to the optical filter 2, the bending portion 120 has high strength and is not easily affected by high temperature, so that the optical filter 2 can be firmly fixed between the bending portion 120 and the fixing surface 11 by clamping the optical filter 2 in the spacing space between the bending portion 120 and the fixing surface 11, and the optical filter 2 can be prevented from falling off the lens barrel 1.

In addition, since the bending part 120 has an adhesive part, the abutting part of the bending part 120 and the optical filter 2 can be sealed by the adhesive 3 by disposing the adhesive 3 on the adhesive part, and therefore, the situation that water vapor or dust enters the inside of the lens through the gap between the optical filter 2 and the lens barrel 1 can be avoided.

The joint of the bending part 120 and the optical filter 2 can be sealed by glue 3 in multiple possible ways, in one possible implementation manner, referring to fig. 2 and 3, the adhesive part can be understood as the end face 123 of the heat-seal ring, so that when the heat-seal ring 12 is in the bending state, the glue 3 can be applied to the position of the optical filter 2 close to the end face 123 of the heat-seal ring, and the glue 3 is respectively contacted with the optical filter 2 and the end face 123 of the heat-seal ring, so that the purpose of sealing the joint of the bending part 120 and the optical filter 2 can be achieved.

In another possible implementation manner, the adhesive part may be understood as the inner wall 122 of the heat sealing ring, so that when the heat sealing ring 12 is in the upright state, the glue 3 may be pre-applied on the position of the inner wall 122 of the heat sealing ring corresponding to the optical filter 2, and then the heat sealing ring 12 may be changed from the upright state to the bent state, so that the heat sealing ring 12 forms the bent part 120, at this time, the glue 3 may be located just at the abutting position of the bent part 120 and the optical filter 2, and obviously, the glue 3 may achieve the purpose of sealing the abutting position of the bent part 120 and the optical filter 2 at this time.

Of course, the adhesive part may also be another part of the bent part 120, and only when the glue 3 is disposed on the adhesive part, the purpose of sealing the abutting part of the bent part 120 and the optical filter 2 can be achieved, which is not limited in the embodiment of the present application.

In addition, in order to make glue 3 more stable and sticky part bond, can be provided with the concave-convex line on the sticky part, like this, under the effect of concave-convex line, can make glue 3 more stable bond to sticky part on, and then make the bonding between glue 3 and the kink 120 more firm.

In practical application scenarios, the temperature around the optical filter 2 is usually as high as about 120 ℃ due to the heat generated by the lens, which makes it difficult to fix the optical filter 2 on the lens barrel 1, and after the optical filter 2 in the related art is fixed on the lens barrel 1 by glue, the glue is often melted due to high temperature, which causes the optical filter 2 to fall off the lens barrel 1. According to the technical scheme provided in the embodiment of the application, the optical filter 2 is clamped in the limiting space between the bending part 120 and the fixing surface 11, and obviously, the situation that the optical filter 2 falls off from the lens barrel 1 can be well avoided.

The heat seal ring 12 may be bent in a hot pressing manner to form the bent portion 120, or the bent portion 120 may be formed in other manners, for example, the heat seal ring 12 may be bent in a manner similar to bending a metal plate to form the bent portion 120, which is not limited in the embodiment of the present application.

In addition, the heat-seal ring 12 and the lens barrel 1 may be integrally formed, or may be a split structure, which is not limited in the embodiment of the present application. When the heat-seal ring 12 is integrally formed with the lens barrel 1, on one hand, the number of parts of the lens is small, and further, the assembling processes of the lens can be reduced, and on the other hand, the lens barrel 1 can be made to be more integrated and more robust. On the other hand, the situation that a seam exists between the heat seal ring 12 and the lens barrel 1 can be avoided, so that the whole lens is more attractive.

In addition, the glue 3 may be a waterproof glue. When glue 3 is waterproof glue, can be so that glue 3 can not receive the influence of liquid such as rainwater, and then can avoid steam or dust etc. to take place through the inside condition of gap entering camera lens between light filter 2 and lens cone 1 better.

In some embodiments, the weight of the glue 3 is g, and g is more than or equal to 0.7mg and less than or equal to 1.5 mg. The applicant researches and discovers that when the weight of the glue 3 is g, the g is more than or equal to 0.7mg and less than or equal to 1.5mg, on one hand, the sealing of the abutting part of the bent part 120 and the optical filter 2 can be well realized, and on the other hand, the waste of the glue 3 is not caused.

The weight g of the glue 3 may be specifically 0.7mg, 0.8mg, or 1.5mg, and the like, and only the weight g of the glue 3 needs to be any value from 0.7mg to 1.5mg, which is not limited in the embodiment of the present application.

It should be noted that the glue 3 may be an epoxy glue, a UV glue, and the like, which is not limited in the embodiment of the present application.

In some embodiments, referring to fig. 3, when the heat seal ring 12 is in the folded state, the glue 3 forms a glue ring 31 at the end face 123 of the heat seal ring and the filter 2 close to the end face 123 of the heat seal ring, the ring width of the glue ring 31 is k, and k is greater than or equal to 0.6mm and less than or equal to 1 mm.

Through forming the glue ring 31 on the end face 123 of the heat seal ring and the optical filter 2 close to the end face 123 of the heat seal ring, when the ring width of the glue ring 31 is k, the applicant researches and discovers that k is not less than 0.6mm and not more than 1mm, on one hand, the glue ring 31 can well seal the abutting part of the bent part 120 and the optical filter 2, and on the other hand, waste of glue 3 is not caused. On the other hand, the sealing performance is ensured, and meanwhile, the performance of the optical filter 2 for filtering light rays is not influenced.

Referring to fig. 2 and 3, the thickness of the glue ring 31 in the direction parallel to the optical axis Z can be gradually reduced along the direction gradually approaching the optical axis Z, so that the waste of the glue 3 can be reduced as much as possible while the sealing performance and the sealing strength are ensured.

Specifically, the ring width k may be 0.6mm, 0.7mm, 1mm, or the like, and only the ring width k needs to be any value from 0.6mm to 1mm, which is not limited in this application.

In some embodiments, referring to fig. 3, when the heat seal ring 12 is in the folded state, the distance between the side wall 21 of the filter and the end face 123 of the heat seal ring is w in the radial direction (i.e. up and down direction in fig. 3) of the heat seal ring 12, and the thickness of the filter 2 is RI, where w > 0.3 RI.

The applicant has found that when the thickness of the optical filter 2 is RI, the distance w between the side wall 21 of the optical filter and the end face 123 of the heat-sealing ring in the radial direction of the heat-sealing ring 12 is greater than 0.3RI, so that the folded part 120 can fix the optical filter 2 between the folded part 120 and the fixing surface 11 well, and the optical filter 2 can be prevented from falling off the lens barrel 1.

For example, assuming that the thickness RI of the optical filter 2 is 0.2mm, in order to fix the optical filter 2 well by the bent portion 120, w > 0.3 × 0.2mm may be 0.6mm, that is, w > 0.6mm, so that the optical filter 2 can be fixed well by the bent portion 120.

Specifically, when the thickness RI of the optical filter 2 is 0.2mm, w may be 0.7, or w may be 0.8 or any value larger than 0.6mm, and this is not limited in the embodiment of the present application.

In some embodiments, referring to fig. 4, when the heat seal ring 12 is in the upright position, the junction of the heat seal ring end face 123 and the heat seal ring outer wall 121 forms an outer chamfer r 1.

When the outer chamfer r1 is formed at the joint of the end face 123 of the heat seal ring and the outer wall 121 of the heat seal ring, the heat seal ring 12 can be made to be substantially in a conical structure, and specifically, along the direction away from the fixing surface 11 (i.e., the direction from left to right in fig. 4), the outer diameter of the heat seal ring 12 will be gradually reduced, so as to prepare for bending the end of the heat seal ring 12 away from the fixing surface 11 toward the direction close to the optical filter 2, and it is more beneficial to bend the end of the heat seal ring 12 away from the fixing surface 11 toward the direction close to the optical filter 2, so that the operation of changing the heat seal ring 12 from the non-bent state to the bent state becomes simple.

Specifically, when the end of the heat seal ring 12 away from the fixing surface 11 needs to be bent in the direction approaching the optical filter 2, the heat seal ring outer wall 121 of the heat seal ring 12 usually needs to be sleeved with a hot pressing jig to perform the above bending operation, so that the outer chamfer r1 is formed at the joint between the heat seal ring end surface 123 and the heat seal ring outer wall 121, and the outer chamfer r1 can serve as a guide for the hot pressing jig, and thus, the operation of changing the heat seal ring 12 from the non-bent state to the bent state can be simplified.

The outer chamfer r1 may be a rounded corner or an oblique corner, which is not limited in the embodiments of the present application.

In some embodiments, referring to FIG. 4, the outer chamfer r1 is a bevel, and when the heat seal ring 12 is in an upright position, the bevel of the bevel forms an angle α with the extension of the outer wall 121 of the heat seal ring, where α is 15 ° or more and 20 ° or less.

When the included angle between the oblique side of the oblique angle and the extension line of the outer wall 121 of the heat seal ring is alpha and alpha is more than or equal to 15 degrees and less than or equal to 20 degrees, the applicant researches and finds that the included angle can enable the heat seal ring 12 to have a better guiding effect on the one hand, and the operation of changing the unbent state of the heat seal ring 12 into the bending state becomes concise. On the other hand, this angle also ensures that the thickness of the entire heat seal ring 12 in the radial direction is not too thin, and therefore, it also ensures that the strength of the heat seal ring 12 is strong, and it can avoid the occurrence of the situation where the optical filter 2 falls off the lens barrel 1 due to too weak strength of the bent portion 120 formed by the heat seal ring 12 after the heat seal ring 12 is in the bent state.

Illustratively, the α may be 15 °, 18 °, 20 °, or the like, and only 15 ° ≦ α ≦ 20 ° is required, which is not limited in the embodiments of the present application.

In some embodiments, with continued reference to FIG. 4, when the heat seal ring 12 is in the upright position, the distance between the midpoint M of the hypotenuse of the outer chamfer r1 and the heat seal ring inner wall 122 is d, 0.4mm ≦ d ≦ 0.6 mm.

When the distance between the midpoint M of the oblique side of the outer chamfer r1 and the inner wall 122 of the heat seal ring is d, the applicant has found that by making d 0.4mm or more and 0.6mm or less, the strength of the entire heat seal ring 12 can be ensured to be strong, and the occurrence of the situation that the optical filter 2 falls off from the lens barrel 1 due to the weak strength of the bent portion 120 formed by the heat seal ring 12 after the optical filter 2 is in the bent state can be avoided. Specifically, the problems of energy waste and filter crush due to the fact that the heat seal ring 12 is not easily bent due to an excessively large d value, and a high pressure and a high temperature are required can be avoided, and the problem of too weak strength of the bent portion 120 due to an excessively small d value can also be avoided.

Illustratively, d can be 0.4mm, 0.5mm, or 0.6mm, etc., and it is only required that d is greater than or equal to 0.4mm and less than or equal to 0.6mm, which is not limited in the embodiment of the present application.

In some embodiments, referring to fig. 5 and 6, the junction of the heat seal ring end surface 123 and the heat seal ring inner wall 122 forms an inner chamfer r 2.

By forming the inner chamfer r2 at the joint of the end face 123 of the heat seal ring and the inner wall 122 of the heat seal ring, on one hand, the sharp edge at the joint of the end face 123 of the heat seal ring and the inner wall 122 of the heat seal ring can be avoided, and the whole heat seal ring 12 can not scratch the optical filter. On the other hand, when the heat seal ring 12 is in a bent state, a gap may be formed at a contact position of the inner chamfer r2 and the optical filter 2, and the gap may be used to accommodate more glue 3, so as to better seal the gap between the optical filter 2 and the lens barrel 1, thereby better avoiding the occurrence of the situation that water vapor or dust enters the inside of the lens through the gap between the optical filter 2 and the lens barrel 1.

In some embodiments, referring to fig. 6, the thickness of the optical filter 2 is RI, the optical filter 2 has a first surface 22 and a second surface 23 opposite to each other, the first surface 22 is a surface abutting against the fixing surface 11, when the heat seal ring 12 is in an upright state, an axial distance between the end surface 123 of the heat seal ring and the second surface 23 is b, and b is greater than or equal to 0.8RI and less than or equal to 1.2 RI.

In this embodiment, when the thickness of the optical filter 2 is RI and the axial distance between the end surface 123 of the heat seal ring and the second surface 23 is b, the applicant has found through research that when the heat seal ring 12 is in the bent state, the folded portion 120 formed by the heat seal ring 12 can fix the optical filter 2 between the folded portion 120 and the fixing surface 11 well, and thus the optical filter 2 can be prevented from falling off the lens barrel 1.

Illustratively, when RI is 0.2mm, by making 0.8 × 0.2mm ≦ b ≦ 1.2 × 0.2mm, that is, by making 0.16mm ≦ b ≦ 0.24mm, it is possible to avoid the occurrence of a situation in which the optical filter 2 falls off the lens barrel 1 while the heat seal ring 12 is in the bent state.

In some embodiments, the gap between the inner wall 122 of the heat seal ring and the side wall 21 of the filter is e, and 0.03mm ≦ e ≦ 0.08 mm.

When the gap between the inner wall 122 of the heat seal ring and the side wall 21 of the optical filter is e, the applicant researches and discovers that the gap between the inner wall 122 of the heat seal ring and the side wall 21 of the optical filter is not larger than 0.03mm and is not larger than 0.08mm, so that the situation that water vapor or dust enters the lens due to the overlarge gap between the inner wall 122 of the heat seal ring and the side wall 21 of the optical filter can be avoided. On the other hand, the gap between the inner wall 122 of the heat seal ring and the side wall 21 of the filter is not too small, which makes the assembly of the filter difficult.

Wherein e may be 0.03mm, 0.04mm, 0.08mm, etc., and the value of e only needs to be any value within the range of 0.03mm to 0.08mm, which is not limited in the embodiment of the present application.

In summary, in the embodiment of the present application, the heat seal ring 12 is disposed around a circumference of the fixing surface 11 of the lens barrel 1 and extends along the optical axis direction Z of the lens barrel 1 toward a direction away from the fixing surface 11, so that when the heat seal ring 12 is in an upright state, a semi-closed "bowl" shaped space can be formed between the heat seal ring 12 and the fixing surface 11, the fixing surface 11 is equivalent to a "bowl bottom", and the heat seal ring 12 is equivalent to a "bowl wall". After the heat-sealing ring 12 is bent, specifically, after the end of the heat-sealing ring 12 away from the fixing surface 11 is bent to the direction close to the filter 2 to form the bent portion 120, it can be understood that a spacing space can be formed between the bent portion 120 and the fixing surface 11. Since the optical filter 2 is disposed between the bending portion 120 and the fixing surface 11 and is respectively abutted against the bending portion 120 and the fixing surface 11, the optical filter 2 is held in the spacing space between the bending portion 120 and the fixing surface 11. It can be understood that, since the folding portion 120 is formed by bending the heat-seal ring 12 toward the direction close to the optical filter 2, the strength is high, and the optical filter is not easily affected by high temperature, by clamping the optical filter 2 in the spacing space between the folding portion 120 and the fixing surface 11, the optical filter 2 can be firmly fixed between the folding portion 120 and the fixing surface 11, and the optical filter 2 can be prevented from falling off the lens barrel 1.

In addition, since the abutting part of the bending part 120 and the optical filter 2 is also sealed by the glue 3, the situation that water vapor or dust enters the inside of the lens through the gap between the optical filter 2 and the lens barrel 1 can be avoided.

Further, since the outer chamfer r1 is formed at the junction of the heat seal ring end face 123 and the heat seal ring outer wall 121 when the heat seal ring 12 is in the standing state. When the outer chamfer r1 is formed at the joint of the end face 123 of the heat seal ring and the outer wall 121 of the heat seal ring, the heat seal ring 12 can be made to be substantially in a conical structure, specifically, the outer diameter of the heat seal ring 12 is gradually reduced along the direction away from the fixing surface 11, so that preparation is made for subsequently bending the end of the heat seal ring 12 away from the fixing surface 11 towards the direction close to the optical filter 2, and the operation of changing the heat seal ring 12 from the non-bent state to the bent state is simplified.

Fig. 7 is a schematic structural diagram of an image pickup apparatus according to an embodiment of the present application. Referring to fig. 7, the image pickup apparatus includes a lens 100.

The lens 100 may have the same structure as any one of the lens 100 in the embodiments, and may have the same or similar beneficial effects, which may specifically refer to the description of the embodiments above, and the embodiments of the present application are not described herein again.

In the embodiment of the present application, since the bending portion 120 of the lens 100 is formed by bending the heat-sealing ring 12 toward the direction close to the optical filter 2, the strength is high, and the optical filter is not easily affected by high temperature, so that the optical filter 2 can be firmly fixed between the bending portion 120 and the fixing surface 11 by clamping the optical filter 2 in the spacing space between the bending portion 120 and the fixing surface 11, and the optical filter 2 can be prevented from falling off from the lens barrel 1. In addition, since the abutting part of the bending part 120 and the optical filter 2 is also sealed by the glue 3, the situation that water vapor or dust enters the inside of the lens through the gap between the optical filter 2 and the lens barrel 1 can be avoided.

Based on this, when the image pickup apparatus includes the lens 100, the image pickup apparatus can be made more durable, and the occurrence of a situation that the shooting quality of the image pickup apparatus is affected due to the entering of moisture or dust into the inside of the lens barrel does not occur, so that the shooting effect of the image pickup apparatus is better.

Fig. 8 is a schematic structural diagram of a vehicle according to an embodiment of the present application, and referring to fig. 8, the vehicle includes a camera device 200.

The camera device 200 may have the same structure as the camera device 200 in the above embodiments, and can have the same or similar beneficial effects, which are not described in detail in this embodiment.

In the embodiment of the present application, since the image pickup apparatus 200 is relatively durable, the situation that the shooting quality of the image pickup apparatus 200 is affected by the entering of water vapor or dust into the lens barrel does not occur, so that the shooting effect of the image pickup apparatus 200 is better. Based on this, when the vehicle includes the image pickup device 200, the service life of the vehicle can be made longer, and the photographing effect is better.

The lens, the camera device and the vehicle disclosed by the embodiment of the invention are described in detail, and the principle and the implementation mode of the invention are explained by applying a specific example, and the description of the above embodiment is only used for helping to understand the lens, the camera device and the vehicle and the core idea thereof; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, and in summary, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. A lens barrel characterized by comprising:

2. The lens barrel according to claim 1, wherein when the heat seal ring is in the folded state, a distance between a side wall of the optical filter and an end face of the heat seal ring in a radial direction of the heat seal ring is w, a thickness of the optical filter is RI, and w > 0.3 RI.

3. The lens barrel according to claim 1, wherein a junction of the heat seal ring end face and the heat seal ring outer wall forms an outer chamfer when the heat seal ring is in the upright state.

4. The lens barrel according to claim 3, wherein the outer chamfer is an oblique angle, and an angle between the oblique edge of the oblique angle and an extension line of the outer wall of the heat-seal ring is α, and α is not less than 15 ° and not more than 20 °.

5. The lens barrel according to claim 4, wherein a distance d between a midpoint of a bevel edge of the outer chamfer and an inner wall of the heat seal ring is 0.4 mm. ltoreq. d.ltoreq.0.6 mm.

6. The lens barrel according to claim 3, wherein a junction of the heat seal ring end surface and the heat seal ring inner wall forms an inner chamfer.

7. The lens barrel according to claim 1, wherein the optical filter has a thickness RI, the optical filter has a first surface and a second surface opposite to each other, the first surface is a surface abutting against the fixing surface, when the heat seal ring is in the upright state, an axial distance between an end surface of the heat seal ring and the second surface is b, and b is greater than or equal to 0.8RI and less than or equal to 1.2 RI.

8. The lens barrel according to any one of claims 1 to 6, wherein a gap between the inner wall of the heat seal ring and the side wall of the optical filter is e, and 0.03 mm. ltoreq. e.ltoreq.0.08 mm.

9. The lens barrel according to any one of claims 1 to 6, wherein the weight of the glue is g, 0.7mg ≤ g ≤ 1.5 mg.

10. The lens barrel according to claim 1, wherein when the heat seal ring is in the bent state, the glue forms a glue ring at the end face of the heat seal ring and the optical filter close to the end face of the heat seal ring, the glue ring has a ring width k, and k is greater than or equal to 0.6mm and less than or equal to 1 mm.

11. An image pickup apparatus comprising the lens barrel according to any one of claims 1 to 10.

12. A vehicle characterized by comprising the image pickup apparatus according to claim 11.