CN112015025A - Lens cone, lens and lens cone manufacturing mold - Google Patents
Lens cone, lens and lens cone manufacturing mold Download PDFInfo
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- CN112015025A CN112015025A CN202010950381.5A CN202010950381A CN112015025A CN 112015025 A CN112015025 A CN 112015025A CN 202010950381 A CN202010950381 A CN 202010950381A CN 112015025 A CN112015025 A CN 112015025A
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- light blocking
- hole
- light
- lens
- positioning
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- 238000004519 manufacturing process Methods 0.000 title claims description 21
- 230000000903 blocking effect Effects 0.000 claims abstract description 159
- 230000003287 optical effect Effects 0.000 claims description 26
- 239000007787 solid Substances 0.000 claims description 8
- 238000001746 injection moulding Methods 0.000 abstract description 22
- 239000003292 glue Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 230000004888 barrier function Effects 0.000 description 5
- 230000035515 penetration Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B11/00—Filters or other obturators specially adapted for photographic purposes
- G03B11/04—Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The invention discloses a lens cone, which comprises a lens cone main body and a light blocking piece, wherein the light blocking piece and the lens cone main body are of a split structure, the light blocking piece is fixed at a light inlet hole of the lens cone main body, the light blocking piece comprises a light blocking part, the light blocking part is annular and is positioned in the light inlet hole, an area formed by the surrounding of the light blocking part is a light blocking hole, the aperture of the light blocking hole is smaller than the minimum inner diameter of the light inlet hole, and the aperture of the light blocking hole is the light passing aperture of the lens cone. This application is through setting up a piece that is in the light that has the light-blocking hole in light entrance department to on transferring the design that leads to the light hole to the piece that is in the light by the lens cone main part, avoided lens cone plastic injection moulding in-process to lead to the light hole glue position too thin to the fashioned problem. This application still provides a camera lens and lens cone preparation mould simultaneously.
Description
Technical Field
The application relates to the technical field of lenses, in particular to a lens barrel, a lens and a lens barrel manufacturing mold.
Background
The lens barrel is used as a device for accommodating lenses in the lens, and the design of the light through hole is directly related to the shooting quality of the lens. In the actual lens manufacturing process, in order to achieve higher optical performance, the processing requirement on the light through hole is very high, for example, the light through hole cannot have burrs, notches and the like. The general lens cone is a plastic injection molding part, and the stability of the production quality of the lens cone is influenced because the molding of the plastic injection molding part is difficult due to the too thin glue position.
Disclosure of Invention
The application provides a lens cone, through set up the piece that is in the light that has the light hole that keeps off in light hole department, avoided lens cone plastic injection moulding time to lead to the problem that the glue position of light hole department is too thin to be fashioned.
In a first aspect, the present application provides a lens cone includes lens cone main part and the piece that is in the light, be in the light with the lens cone main part is split type structure, just the piece that is in the light is fixed the income unthreaded hole of lens cone main part, the piece that is in the light is including the portion that is in the light, the portion that is in the light is cyclic annular and is located go into the unthreaded hole, the portion that is in the light encloses the hole of establishing the formation in the area for being in the light, the aperture that keeps off the unthreaded hole is less than go into the minimum internal diameter of unthreaded hole, the aperture that keeps off the unthreaded hole does the clear. The lens cone in the embodiment comprises a lens cone main body and a light blocking part, wherein the light blocking part is arranged at the light inlet of the lens cone main body and comprises an annular light blocking part, a round hole is arranged around the light blocking part, when the aperture of the round hole is smaller than the minimum inner diameter of the light inlet, the round hole is a light through hole, and the aperture of the round hole is a light through aperture. Through the design of the light blocking piece, the light through hole which should be formed in the lens barrel body in an injection molding mode originally is converted into the light blocking hole formed in the light blocking piece. The design can avoid specially designing the glue position of the light through hole in the injection molding process of the lens cone main body, and the processing difficulty of the injection molding process of the lens cone main body is reduced. It should be noted that the axis of the light blocking hole and the optical axis of the lens barrel body need to be collinear, and since the optical axis of the lens barrel body represents the optical axis of the lens accommodated therein, the axis of the light blocking hole needs to coincide with the optical axis of the lens barrel body in order to match the light blocking hole with the lens.
In a possible embodiment, the light blocking member further includes a positioning portion connected to the light blocking portion, the positioning portion is disposed around the outside of the light blocking portion, the inner wall of the lens barrel body at the light incident hole is partially recessed to form a positioning groove, and the positioning portion is embedded into the positioning groove to fix the light blocking member to the lens barrel body. Specifically, in this embodiment, a positioning groove is formed in the inner wall of the lens barrel body, and the positioning groove is used for accommodating the positioning portion of the light blocking member. The fixed connection of the light blocking piece on the light inlet hole can be realized through the positioning groove, and the distance between the light inlet hole and the lens accommodated in the lens cone body can be adjusted by changing the position height of the positioning groove in the actual operation.
In a possible embodiment, the light blocking member is an annular sheet, the positioning groove is an annular groove, and the positioning portion is accommodated in the positioning groove. The light blocking piece in the embodiment is a circular ring sheet, the light blocking part and the positioning part are both circular rings, the outer ring edge of the light blocking part is connected to the inner ring edge of the positioning part, the light blocking part and the positioning part form a large circular ring sheet, and the positioning groove designed on the inner wall of the light inlet hole is also a circular groove.
In one possible embodiment, the light blocking portion and the positioning portion are integrally formed. The integrally formed light blocking part and the positioning part form a complete circular ring sheet, the light blocking part is designed into a large circular ring sheet which belongs to the processing of a regular structure, the manufacturing cost is low in efficiency and high in efficiency, meanwhile, the design of the circular ring sheet is convenient for size measurement, an inner ring and an outer ring of the circular ring sheet are concentric circles, and due to the fact that the outer ring corresponds to the bottom surface of the positioning groove, the size and the position of the positioning groove are limited, and the coincidence of the axis of the light blocking hole in the light blocking part and the optical axis of the lens barrel main body can be completed.
In one possible embodiment, the thickness of the light blocking portion in the optical path direction is in a range of 0.01-0.03 mm. The thickness of the light blocking part is selected in the range of 0.01mm to 0.03mm, so that the requirement of light blocking can be met, incident light penetration caused by too thin light blocking part is avoided, and miniaturization design is also achieved, and the problem that the size is too thick and is not beneficial to miniaturization design of a lens is avoided.
In a possible embodiment, the circular hole on the object side surface of the light blocking member is a first circular hole, the circular hole on the image side surface of the light blocking member is a second circular hole, a first aperture of the first circular hole is smaller than a second aperture of the second circular hole, and the first aperture is a clear aperture. In the embodiment, the light blocking member has a certain thickness, the sizes of the first round hole on the object side surface and the second round hole on the image side surface can have various size relationships, and for the whole light blocking member, the size of the light-transmitting aperture is the minimum value of the first round hole and the second round hole.
In a possible embodiment, the light barrier comprises two surfaces perpendicular to the optical path direction, the roughness VDI of said surfaces being in the order of 5 to 24. The roughness VDI standard is a grading of the roughness of the finished surface of the product, where the grade is chosen to be in the range of 5 to 24 grades of relatively rough surface in order to reduce the reflection of light from the sides of the light-blocking part and the sides of the image.
In a possible embodiment, the positioning groove is provided at the minimum inner diameter of the light inlet hole. The inner wall of the lens cone main body is not parallel to the optical axis usually, so the inner wall apertures at different positions of the inner wall are different, if the positioning groove is not arranged at the minimum inner diameter of the light inlet, the minimum position of the inner wall aperture can form partial shielding of the light blocking part, thereby causing secondary reflection of light, influencing the penetration of the light from the light inlet, and reducing the imaging effect of the lens.
In a second aspect, the present application provides a lens barrel, which includes a lens and the lens barrel, wherein the lens is fixed in the accommodating space of the lens barrel. The lens barrel is adopted in the lens in the embodiment, the glue position of the light through hole formed by direct injection molding is avoided by utilizing the design of the light blocking piece, and the manufacturing difficulty of injection molding processing is reduced.
The third aspect, the application provides a lens cone preparation mould, including the solid side mold insert and the tube-shape of being in the light of a positioning mold insert, the relative tube-shape solid side mold insert and the tube-shape of setting move side mold insert, the relative solid side mold insert and the tube-shape of setting move side mold insert, first through-hole has been seted up to the solid side mold insert, the solid side mold insert is located inside the first through-hole, the second through-hole is seted up to the side mold insert that moves, the third through-hole is seted up to the side mold insert that moves, the piece positioning mold insert that is in the light is located the third through-hole is inside, first through-hole, institute second through-hole with the third through-hole coaxial line, the first locating surface of solid side mold insert with the second locating surface of moving side mold insert sets up relatively for press from both sides and establish the piece that is in the light, the piece positioning mold insert that is in the light wears to. In the lens barrel manufacturing mold in the embodiment, the light blocking piece is positioned in the axis direction through the fixed side insert and the movable side insert, and the positioning of the light blocking piece on a plane perpendicular to the axis is ensured by utilizing the light blocking piece positioning insert, so that the position connection relation between the light blocking piece and the lens barrel main body is determined.
The lens cone provided by the application is provided with the light blocking piece for arranging the light blocking hole at the light inlet hole, so that the design of the light blocking hole is transferred to the light blocking piece through the lens cone main body, and the problem that the glue position at the light inlet hole is too thin to be molded during the injection molding of the lens cone plastic is avoided. Simultaneously this application still provides the camera lens that contains this lens cone and the mould of preparation this lens cone.
Drawings
Fig. 1 is a sectional view of a lens barrel in an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view taken along section line A-A in FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
FIG. 4 is a top view of a flag in an embodiment of the present application;
FIG. 5 is a schematic cross-sectional view taken along section line C-C in FIG. 4;
FIG. 6 is a top view of a flag in another embodiment of the present application;
fig. 7 is a sectional view showing the structure of a lens barrel manufacturing mold according to an embodiment of the present application;
fig. 8 is a partial enlarged view at E in fig. 7.
Detailed Description
The following description of the embodiments of the present application will be made with reference to the accompanying drawings.
In a conventional lens manufacturing process, a lens barrel of a lens is usually formed by injection molding, but the lens barrel formed by injection molding usually has a manufacturing difficulty, namely how to form a light through hole with a thin glue position at a light inlet of the lens barrel by injection molding. The application provides a lens cone, through set up a light blocking piece in light entrance department to this forms the logical unthreaded hole that satisfies the needs, avoids forming by the injection molding process.
Referring to fig. 1 to 4, a lens barrel 50 according to the present invention includes a barrel body 20 and a light blocking member 10, where the light blocking member 10 is disposed at a light entrance 25 of the barrel body 20, and as can be seen from the figures, the barrel 50 further includes an accommodating space 26, and in a manufacturing process of a lens, a plurality of lenses are usually required to be fixed in the accommodating space 26 of the barrel 50. In the embodiment, the light blocking member 10 is fixed to the light entrance hole 25 in various ways, and may be fixed and connected by bonding, embedding, and the like, specifically, the embedding manner is adopted in the embodiment. In fig. 2, the light blocking member 10 is a sheet structure with a light blocking hole 15 formed in a central region, and referring to fig. 1 and fig. 5, an axis Y of the light blocking hole 15 is collinear with an optical axis X of the lens barrel body 20, and an aperture D1 of the light blocking hole 15 is smaller than a minimum inner diameter D2 of the light entrance hole 25, where an inner diameter D1 of the light entrance hole 25 is changed, and inner diameters D1 of the light entrance hole 25 at different positions of the light entrance hole 25 are also different, where the minimum inner diameter is D2, when there is no light blocking member 10, the minimum inner diameter D2 is an injection-molded light passing aperture, but through the design of the light blocking member 10, the aperture of the light blocking hole 15 surrounded by the light blocking portion 11 is smaller than the minimum inner diameter D2 of the light entrance hole 25, and an aperture D1 of the light blocking hole 15 is a light passing aperture of the lens barrel body. The lens barrel 50 in the embodiment includes two components, namely a lens barrel main body 20 and a light blocking member 10, the light blocking member 10 is disposed at the light entrance 25 of the lens barrel main body 20 in an embedded manner, and through the design of the light blocking member 10, a light through hole which should be originally formed in the lens barrel main body 20 is converted into a light blocking hole 15 which is formed in the light blocking member 10, where the light blocking hole 15 is a light through hole of the whole lens barrel 50. Therefore, the glue position of the light through hole can be prevented from being specially designed in the injection molding process of the lens cone main body 20, and the processing difficulty of the injection molding process of the lens cone main body 20 is reduced. Here, the axis Y of the light blocking hole 15 and the optical axis X of the lens barrel body 20 need to be collinear, and since the optical axis X of the lens barrel body 20 represents the optical axis of the lens accommodated therein, in order to fit the light blocking hole 15 serving as a light passing hole with the lens, the axis Y of the light blocking hole 15 needs to be overlapped with the optical axis X of the lens barrel body 20. For convenience of explanation, the optical axis direction in the following examples coincides with the extending direction of the optical axis X, and the extending direction of the optical axis X is also the mold opening direction of the mold.
Further, as shown in fig. 1 to 4, the inner wall 21 of the lens barrel main body 20 at the light entrance 25 is partially recessed to form a positioning groove (not shown in the figure), the light blocking member 10 includes a light blocking portion 11 and a positioning portion 12 connected to each other, the positioning portion 12 is disposed around the outside of the light blocking portion 11, the light blocking portion 11 is provided with a circular hole as the light blocking hole 15, and the positioning portion 12 is embedded into the positioning groove to fix the light blocking member 10 to the lens barrel main body. Specifically, in the present embodiment, a positioning groove is provided inside the light inlet, and the positioning groove is used for accommodating the positioning portion 12 of the light blocking member 10. The fixed connection of the light blocking member 10 at the light entrance 25 can be realized by the positioning groove, and the distance between the light entrance (the light blocking hole 15) and the lens accommodated in the lens barrel body 20 can be adjusted by changing the position height of the positioning groove in the actual operation.
It should be noted that, in the specific embodiment, since the lens barrel body 20 is formed by injection molding, when the lens barrel body 20 is manufactured, the light blocking member 10 only needs to be disposed at a desired predetermined position, and then the light blocking member 10 can be fixed at a corresponding position of the lens barrel body 20, that is, the light entrance hole 25, through an injection molding process. The method avoids the situation that a positioning groove is formed on the inner wall 21 of the lens cone main body 20 independently, and saves the manufacturing cost.
In a specific embodiment, as shown in fig. 1 to 4, the light blocking part 11 and the positioning part 12 are both circular ring sheets, and the outer ring edge of the light blocking part 11 is connected to the inner ring edge of the positioning part 12. Correspondingly, as shown in fig. 2, the positioning groove (not shown) is an annular groove, and the positioning portion 12 is accommodated in the positioning groove. In the embodiment, the light blocking part 11 and the positioning part 12 are both circular ring sheets, the outer ring edge of the light blocking part 11 is connected to the inner ring edge of the positioning part 12, the two form a large circular ring sheet, and the positioning groove designed on the inner wall 21 of the light inlet 25 is also a circular groove. Specifically, the light blocking portion 11 and the positioning portion 12 in the embodiment are integrally molded. The integrally formed light blocking part 11 and the positioning part 12 form a complete circular sheet, the light blocking part 10 is designed into a large circular sheet, the processing of a regular structure is achieved, the manufacturing cost is low, the efficiency is high, meanwhile, the design of the circular sheet is convenient for size measurement, the inner ring and the outer ring are concentric circles, and due to the fact that the outer ring corresponds to the groove bottom surface of the positioning groove, the size and the position of the positioning groove are limited, and the coincidence of the axis Y of the light blocking hole 15 on the light blocking part 10 and the optical axis X of the lens barrel main body 20 can be achieved.
In another specific embodiment, as shown in fig. 6, the light blocking part 11 is a circular sheet, the positioning part 12 disposed at the periphery thereof is a square hollow sheet, the light blocking member 10 formed by combining the circular sheet and the positioning part is a square sheet, a light blocking hole 15 is disposed at the center of the sheet, and the light blocking hole 15 is a light through hole of the entire lens barrel. Different from the embodiment of fig. 4 in which the light blocking member 10 is a circular ring sheet, the difference between the two is the difference of the positioning portion 12, for different embodiments, different shape designs of the positioning portion 12 can meet the requirements of the present application, and the selection of the specific shape can be determined according to actual requirements.
In a specific embodiment, as shown in fig. 5, the thickness d6 of the light-blocking portion 11 in the optical path direction (extending direction of the optical axis X) is in the range of 0.01-0.03 mm. The thickness d6 of the light blocking part 11 is selected in the range of 0.01mm to 0.03mm, so that the requirement of light blocking can be met, incident light penetration caused by too thin light blocking part 11 is avoided, and the miniaturization design of a lens which is not beneficial to overlarge size can be avoided. In a specific embodiment, since the light blocking part 11 and the positioning part 12 are integrally molded as the light blocking member 10, the thickness d6 of the light blocking part 11 is the thickness d6 of the light blocking member 10.
In a specific embodiment, as shown in fig. 3 to 5, the circular hole on the object-side surface 13 of the light barrier 10 is a first circular hole, the circular hole on the image-side surface 14 of the light barrier 10 is a second circular hole, the first aperture d4 of the first circular hole is smaller than the second aperture d5 of the second circular hole, and the first aperture d4 is the clear aperture 15. In the embodiment of the light barrier 10 having a certain thickness d6, the sizes of the first circular hole on the object side 13 and the second circular hole on the image side 14 can have various size relationships, and the size of the light-transmitting aperture 15 of the light barrier 10 is the minimum, in the embodiment, since the first aperture d4 is smaller than the second aperture d5, the light-transmitting aperture 15 is the first aperture d4 of the first circular hole on the object side 13. In other embodiments, if the first aperture d4 is larger than the second aperture d5, then the clear aperture 15 is now the second aperture d5 of the second circular hole on the image side 14.
In a specific embodiment, as shown in fig. 3, the roughness VDI levels of the surfaces on both sides of the light blocking part 11 range from 5 to 24 levels. The roughness VDI standard is a classification of the roughness (charmie pattern roughness) of the surface of the product, wherein the selected classification is a relatively rough surface of 5 to 24 grades, and the surface within the classification is relatively rough, which can reduce the reflection effect of the surface, and the design is aimed at reducing the reflection of light from the object side and the image side of the light blocking part 11.
In a specific embodiment, as shown in fig. 1 to 3, the diameter of the inner wall 21 in a plane perpendicular to the optical axis X is an inner wall aperture D1, and a positioning groove (not shown) is provided at a position where the inner wall aperture D1 is smallest. In the embodiment, the minimum aperture of the light entrance hole 25 is the minimum inner wall aperture D1 of the inner wall, because the inner wall 21 is not generally parallel to the optical axis, the inner wall apertures at different positions of the inner wall 21 are also different, and if the positioning groove is not disposed at the position where the inner wall aperture D1 is the minimum, i.e., at the position of the inner wall aperture D2, the part of the light blocking portion 11 at the position where the inner wall aperture is the minimum on the inner wall 21 is blocked, so that secondary reflection of light is caused, light penetration from the light blocking hole is affected, and the imaging effect of the lens is reduced.
In a second aspect, the present application further provides a lens barrel, which includes a lens and the lens barrel, wherein the lens is fixed in the accommodating space of the lens barrel. The lens barrel is adopted in the lens in the embodiment, the glue position of the light through hole formed by direct injection molding is avoided by utilizing the design of the light blocking piece, and the manufacturing difficulty of injection molding processing is reduced.
In a third aspect, as shown in fig. 7 and 8, the present application provides a lens barrel manufacturing mold 100, the lens barrel manufacturing mold 100 includes a light blocking member positioning insert 80, a cylindrical fixed side mold core 61 and a cylindrical movable side mold core 62 which are arranged oppositely, and a fixed side insert 71 and a cylindrical movable side insert 72 which are arranged oppositely, the fixed side mold core 61 is provided with a first through hole (not shown in the figure), the fixed side insert 71 is located inside the first through hole, the movable side mold core 62 is provided with a second through hole (not shown in the figure), the movable side insert 72 is located inside the second through hole, the movable side insert 72 is provided with a third through hole (not shown in the figure), the light blocking member positioning insert 80 is located inside the third through hole, the first through hole, the second through hole and the third through hole are coaxial with a Z, the light blocking member 10 is sandwiched between the fixed side insert 71 and the movable side insert 72, the object side surface 13 of the light blocking member 10 is attached to a first positioning surface 715 of the fixed side insert 71 in the mold, the image side surface 14 of the light blocking member 10 is attached to the second positioning surface 725 of the movable insert 72 in the mold opening direction (extending direction of the optical axis X), the first positioning surface 715 and the second positioning surface 725 are disposed opposite to each other, and the light blocking hole 15 of the light blocking member 10 is sleeved on the outer wall 85 of the light blocking member positioning insert 80. In the lens barrel manufacturing mold 100 of the embodiment, the light blocking member 10 is positioned in the optical axis X direction by the fixed side insert 71 and the movable side insert 72, and the light blocking member positioning insert 80 ensures the positioning of the light blocking member 10 on the plane perpendicular to the axis Z, thereby determining the positional connection relationship between the light blocking member 10 and the lens barrel body 20.
In the specific manufacturing process, a light blocking piece with the size meeting the requirement is prepared in advance, the light blocking piece is placed in the corresponding position of the lens cone manufacturing mold, the light blocking piece is positioned by the fixed side insert, the movable side insert and the light blocking piece positioning insert, and then injection molding is carried out on the light blocking piece in the mold, so that the position fixing of the light blocking piece at the position of the lens cone light inlet is completed. In the embodiment, a positioning groove does not need to be formed on the light incidence part of the lens barrel for the light blocking part, the light blocking part is located at the corresponding light incidence hole, and when the injection molding process is completed, the light blocking part naturally completes the positioning work.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application with specific examples, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. The lens cone is characterized by comprising a lens cone main body and a light blocking part, wherein the light blocking part and the lens cone main body are of a split structure, the light blocking part is fixed to a light inlet of the lens cone main body, the light blocking part comprises a light blocking part, an area formed by the light blocking part in a surrounding mode is a light blocking hole, the aperture of the light blocking hole is smaller than the minimum inner diameter of the light inlet, and the aperture of the light blocking hole is the light passing aperture of the lens cone.
2. The lens barrel according to claim 1, wherein the light blocking member further includes a positioning portion connected to the light blocking portion, the positioning portion is disposed around an outer side of the light blocking portion, an inner wall portion of the barrel body at the light entrance is recessed to form a positioning groove, and the positioning portion is inserted into the positioning groove to fix the light blocking member to the barrel body.
3. The lens barrel according to claim 2, wherein the light blocking member is an annular sheet, and the positioning groove is an annular positioning groove.
4. The lens barrel according to claim 2, wherein the light blocking portion and the positioning portion are integrally molded.
5. The lens barrel according to claim 1, wherein a thickness of the light blocking portion in the optical path direction is in a range of 0.01mm to 0.03 mm.
6. The lens barrel according to claim 1, wherein the opening of the object side surface of the light blocking member is a first circular hole, the opening of the image side surface of the light blocking member is a second circular hole, a first aperture of the first circular hole is smaller than a second aperture of the second circular hole, and the first aperture is a clear aperture.
7. The lens barrel according to claim 1, wherein the light blocking portion includes two surfaces perpendicular to an optical path direction, the surfaces having a roughness VDI level ranging from 5 to 24 levels.
8. The lens barrel according to claim 2, wherein the positioning groove is provided at the minimum inner diameter of the light entrance hole.
9. A lens barrel according to any one of claims 1 to 8, comprising a lens and a lens barrel, wherein the lens is fixed in a receiving space of the lens barrel.
10. A lens cone manufacturing mold is characterized by comprising a light blocking part positioning insert, a cylindrical fixed side mold core and a cylindrical movable side mold core which are arranged oppositely, a fixed side insert and a cylindrical movable side insert which are arranged oppositely, the solid side mold core is provided with a first through hole, the solid side mold insert is positioned in the first through hole, the movable side mold core is provided with a second through hole, the movable side insert is positioned in the second through hole, the movable side insert is provided with a third through hole, the light blocking part positioning insert is positioned inside the third through hole, the first through hole, the second through hole and the third through hole are coaxial, the first positioning surface of the fixed side insert in the mold opening direction is opposite to the second positioning surface of the movable side insert in the mold opening direction, the light blocking part positioning insert is used for positioning the light blocking part and penetrates through the light blocking hole of the light blocking part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010950381.5A CN112015025A (en) | 2020-09-10 | 2020-09-10 | Lens cone, lens and lens cone manufacturing mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010950381.5A CN112015025A (en) | 2020-09-10 | 2020-09-10 | Lens cone, lens and lens cone manufacturing mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112015025A true CN112015025A (en) | 2020-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010950381.5A Pending CN112015025A (en) | 2020-09-10 | 2020-09-10 | Lens cone, lens and lens cone manufacturing mold |
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| Country | Link |
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| CN (1) | CN112015025A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114488654A (en) * | 2022-03-18 | 2022-05-13 | 福州鑫图光电有限公司 | Diffuse reflection structure of scientific grade CMOS camera and processing method and equipment thereof |
-
2020
- 2020-09-10 CN CN202010950381.5A patent/CN112015025A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114488654A (en) * | 2022-03-18 | 2022-05-13 | 福州鑫图光电有限公司 | Diffuse reflection structure of scientific grade CMOS camera and processing method and equipment thereof |
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