CN112859277B - Lens module - Google Patents
Lens module Download PDFInfo
- Publication number
- CN112859277B CN112859277B CN202110216785.6A CN202110216785A CN112859277B CN 112859277 B CN112859277 B CN 112859277B CN 202110216785 A CN202110216785 A CN 202110216785A CN 112859277 B CN112859277 B CN 112859277B
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- Prior art keywords
- bearing seat
- lens module
- carrier
- accommodating space
- seat
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- 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
- G02B7/028—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The invention provides a lens module, which comprises a first bearing seat, a second bearing seat, a third bearing seat, a plurality of lenses and an actuator. The second bearing seat is configured in the first accommodating space of the first bearing seat. The third bearing seat is configured in the second accommodating space of the second bearing seat. The heat conduction coefficient of the second bearing seat is different from that of the third bearing seat. One of the second bearing seat and the third bearing seat has a heat conduction coefficient between 0.9W/(m.K) and 20W/(m.K). The lens is configured in the third accommodating space of the third bearing seat. One of the coil assembly and the magnet assembly of the actuator is arranged on the first bearing seat and is positioned in the first accommodating space. The other one of the coil assembly and the magnet assembly of the actuator is arranged on the second bearing seat, and the coil assembly and the magnet assembly are arranged correspondingly to each other. The lens module has better heat dissipation effect and imaging resolution.
Description
Technical Field
The present disclosure relates to optical modules, and particularly to a lens module.
Background
In the conventional lens module, when the lens module is focused, the motor is powered on, so that the motor-bearing lens component moves to a position with the best resolution. However, the amount of current required to be supplied to the motor coil varies according to the position, so that the motor coil becomes a key of the heat source. Generally, the motor coils are located on the left and right sides of the lower half of the lens, so that when the motor is powered on, the lens on the upper half of the lens is heated differently from the lens on the lower half of the lens, which causes the lens to shrink differently in the X-Y direction, thereby affecting the imaging resolution of the lens. In addition, the lens and the bearing moving part inside the motor are mostly made of plastic materials, wherein the heat conduction coefficient of the plastic materials is about 0.2W/(m.k) to 0.3W/(m.k), and the heat dissipation effect is poor.
Disclosure of Invention
The invention is directed to a lens module, which has better heat dissipation effect and imaging resolution.
According to an embodiment of the invention, a lens module includes a first carrying seat, a second carrying seat, a third carrying seat, a plurality of lenses and an actuator. The first bearing seat is provided with a first accommodating space. The second bearing seat is configured in the first accommodating space of the first bearing seat and is provided with a second accommodating space. The third bearing seat is configured in the second containing space of the second bearing seat and is provided with a third containing space. The second carrier supports a third carrier, wherein the thermal conductivity of the second carrier is different from the thermal conductivity of the third carrier, and the thermal conductivity of one of the second carrier and the third carrier is between 0.9W/(m.K) and 20W/(m.K). The lens is configured in the third accommodating space of the third bearing seat. The actuator includes a coil assembly and a magnet assembly. One of the coil assembly and the magnet assembly is arranged on the first bearing seat and is positioned in the first accommodating space. The other one of the coil assembly and the magnet assembly is arranged on the second bearing seat, and the coil assembly and the magnet assembly are arranged correspondingly to each other.
In the lens module according to the embodiment of the invention, the coil assembly is disposed on the first bearing seat and located in the first accommodating space, and the magnet assembly is disposed on the second bearing seat.
In the lens module according to the embodiment of the invention, the thermal conductivity of the third carrying seat is greater than that of the second carrying seat.
In the lens module according to the embodiment of the invention, the thermal conductivity coefficient of the second carrying seat is greater than the thermal conductivity coefficient of the third carrying seat.
In the lens module according to the embodiment of the invention, one of the second carrying seat and the third carrying seat is made of plastic, and the other of the second carrying seat and the third carrying seat is made of one of plastic mixed carbon, graphite, or high thermal conductivity particles, or a combination thereof.
In the lens module according to the embodiment of the invention, the lens module further includes a fourth carrying seat and a prism. The fourth bearing seat is arranged above the first bearing seat and is provided with a fourth containing space. The prism is configured in the fourth accommodating space of the fourth bearing seat and is arranged corresponding to the lens.
In the lens module according to the embodiment of the invention, the first carrying seat has a first opening, and the fourth carrying seat has a second opening, and the first opening is communicated with the second opening.
In the lens module according to the embodiment of the invention, the lens module further includes a circuit carrier, a sensor, a fixing member, and a filter glass. The circuit carrier plate is arranged below the first bearing seat. The sensor is configured on the circuit carrier plate. The fixing piece is arranged on the circuit carrier plate and defines a space with the circuit carrier plate. The filter glass is arranged on the fixing piece and corresponds to the sensor and the lens, wherein a vertical distance is formed between the filter glass and the sensor.
In the lens module according to the embodiment of the invention, the first bearing seat has a first opening, and the fixing member has a second opening. The second opening exposes a part of the filter glass, and the first opening is communicated with the second opening.
In an embodiment of the lens module, the lens module further includes at least one metal sheet embedded in the second carrying seat.
In view of the above, in the design of the lens module of the invention, the thermal conductivity of the second carrying seat is different from the thermal conductivity of the third carrying seat, and the thermal conductivity of one of the second carrying seat and the third carrying seat is between 0.9W/(m.k) and 20W/(m.k). That is, one of the second bearing seat and the third bearing seat comprises a material other than a plastic material, so that the heat dissipation effect of the lens module can be improved, and the lens module can have better imaging resolution.
Drawings
Fig. 1A is a schematic cross-sectional view of a lens module according to an embodiment of the invention;
FIG. 1B is a schematic cross-sectional view of the lens module of FIG. 1A at another viewing angle;
fig. 2 is a schematic cross-sectional view of a lens module according to another embodiment of the invention;
fig. 3 is a schematic cross-sectional view of a lens module according to another embodiment of the invention.
Description of the reference numerals
100a, 100b, 100c, a lens module;
110 is a first bearing seat;
112, a first accommodating space;
114, an opening;
116, an opening;
120, a second bearing seat;
122, a second accommodating space;
130, a third bearing seat;
132, a third accommodating space;
140, a lens;
145, a padding part;
150a, 150b an actuator;
152a, 152b coil assemblies;
154a, 154b a magnet assembly;
160, a fourth bearing seat;
162 a fourth accommodating space;
164, an opening;
165: a prism;
170, a circuit carrier board;
175, a sensor;
180, a fixing piece;
185 filter glass;
186 is an opening;
190, a metal sheet;
g, vertical spacing;
s, space.
Detailed Description
Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.
Fig. 1A is a schematic cross-sectional view of a lens module according to an embodiment of the invention. Fig. 1B is a schematic cross-sectional view of the lens module of fig. 1A from another viewing angle. It should be noted that fig. 1A is a front cross-sectional view of the lens module, and fig. 1B is a side cross-sectional view of the lens module.
Referring to fig. 1A and fig. 1B, in the present embodiment, a lens module 100a includes a first carrier 110, a second carrier 120, a third carrier 130, a plurality of lenses 140, and an actuator 150 a. The first bearing seat 110 has a first accommodating space 112. The second bearing seat 120 is disposed in the first accommodating space 112 of the first bearing seat 110 and has a second accommodating space 122. The third bearing seat 130 is disposed in the second accommodating space 122 of the second bearing seat 120 and has a third accommodating space 132. The second carrier 120 carries the third carrier 130, wherein the thermal conductivity of the second carrier 120 is different from the thermal conductivity of the third carrier 130, and one of the second carrier 120 and the third carrier 130 has a thermal conductivity between 0.9W/(m.k) and 20W/(m.k). The lens 140 is disposed in the third accommodating space 132 of the third bearing seat 130. The actuator 150a is, for example, a motor, and includes a coil assembly 152a and a magnet assembly 154 a. One of the coil assembly 152a and the magnet assembly 154a is disposed on the first carrier 110 and located in the first accommodating space 112. The other of the coil assembly 152a and the magnet assembly 154a is disposed on the second carrier 120, and the coil assembly 152a and the magnet assembly 154a are disposed corresponding to each other.
In detail, in the present embodiment, the first carrier 110 is embodied as a carrier on the motor fixing side for carrying the coil assembly 152a or the magnet assembly 154a of the actuator 150 a. Here, the magnet assembly 154a of the actuator 150a is disposed on the first carrier 110 and located in the first accommodating space 112. The second carrying base 120 is embodied as a lens carrying base of a motor moving part for carrying the lens carrying base. The third carrying seat 130 is embodied as a lens carrying seat for carrying a lens 140 of a lens. In the present embodiment, the lens component includes a third carrier 130, a lens 140, and a padding 145 disposed between the lens 140. The motor-carrying lens component includes a first carrying seat 110, a second carrying seat 120, a coil assembly 152a and a magnet assembly 154 a. When the lens module 100a is in focus, the actuator 150a is energized to move the motor-carrying lens component to the optimal resolution position.
Particularly, in the embodiment, the thermal conductivity of the third carrier 130 is greater than that of the second carrier 120, wherein the second carrier 120 is made of plastic, and the third carrier 130 is made of one or a combination of plastic mixed carbon, graphite, or high thermal conductivity particles. That is, compared to the material of the second carrier 120, the material of the third carrier 130 of the present embodiment is a high thermal conductive material, which can effectively and rapidly dissipate heat to reduce or prevent the heat generated by the coil assembly 152a from being transferred to the lens 140. In another embodiment, the thermal conductivity of the second carrier 120 may also be greater than the thermal conductivity of the third carrier 130, wherein the second carrier 120 is made of one or a combination of plastic mixed carbon, graphite, or high thermal conductivity particles, and the third carrier 130 is made of plastic. In short, in the embodiment, one of the second carrier 120 and the third carrier 130 is made of plastic, and the other of the second carrier 120 and the third carrier 130 is made of one of plastic mixed carbon, graphite, or high thermal conductivity particles, or a combination thereof. Therefore, the heat generated by the coil assembly 152a is quickly taken away by the high thermal conductive material and is not transferred to the lens 140, so that the phenomenon of uneven heating of the existing lens can be avoided, and the imaging resolution of the lens module 100a can be improved.
Moreover, the lens module 100a of the present embodiment further includes a fourth carrying seat 160 and a prism 165. The fourth carrying seat 160 is disposed above the first carrying seat 110 and has a fourth accommodating space 162. The prism 165 is disposed in the fourth accommodating space 162 of the fourth carrier 160 and corresponds to the lens 140. Further, the first carrier 110 has an opening 114 (i.e., a first opening), and the fourth carrier 160 has an opening 164 (i.e., a second opening), wherein the opening 114 of the first carrier 110 is communicated with the opening 164 of the fourth carrier 160.
In addition, the lens module 100 of the present embodiment further includes a circuit carrier 170, a sensor 175, a fixing member 180, and a filter glass 185. The circuit carrier 170 is disposed under the first carrier 110, and the sensor 175 is disposed on the circuit carrier 170. The fixing member 180 is disposed on the circuit carrier 170, and defines a space S with the circuit carrier 170. The filter glass 185 is disposed on the fixing member 180 and disposed corresponding to the sensor 175 and the lens 140, wherein a vertical distance G is formed between the filter glass 185 and the sensor 175. Here, the sensor 175 is embodied as a complementary metal oxide semiconductor, and the filter glass 185 is embodied as an infrared light filter glass. In addition, the first carrier block 110 has an opening 116 (i.e., a first opening), and the fixing member 180 has an opening 186 (i.e., a second opening), wherein the opening 186 exposes a portion of the filter glass 185, and the opening 116 is communicated with the opening 186.
In short, the lens module 100a of the present embodiment is embodied as a periscopic lens module, which uses one of the second bearing seat 120 and the third bearing seat 130, which is made of a high thermal conductive material (with a thermal conductivity coefficient ranging from 0.9W/(m.k) to 20W/(m.k)) other than plastic material, to quickly take away heat generated by the coil assembly 152a, so as to avoid the problem of uneven heating of the lens 140 caused by heat transfer to the lens 140, thereby improving the imaging resolution of the lens module 100 a.
It should be noted that the following embodiments follow the reference numerals and parts of the contents of the foregoing embodiments, wherein the same reference numerals are used to indicate the same or similar elements, and the description of the same technical contents is omitted. For the description of the omitted parts, reference may be made to the foregoing embodiments, and the following embodiments will not be repeated.
Fig. 2 is a schematic cross-sectional view of a lens module according to another embodiment of the invention. Referring to fig. 1A and fig. 2, the lens module 100b of the present embodiment is similar to the lens module 100a, and the difference between the two is: in the lens module 100b of the present embodiment, the coil assembly 152b of the actuator 150b is disposed on the first carrying seat 110 and located in the first accommodating space 112, and the magnet assembly 154b is disposed on the second carrying seat 120. Therefore, the heat source (i.e., the coil assembly 152b) is far away from the lens, so as to prevent the lens 140 from being heated unevenly due to the heat generated by the coil assembly 152b, and further enable the lens module 100b to have a better imaging resolution.
Fig. 3 is a schematic cross-sectional view of a lens module according to another embodiment of the invention. Referring to fig. 1A and fig. 3, the lens module 100c of the present embodiment is similar to the lens module 100a, and the difference between the two is: in the lens module 100c of the present embodiment, the lens module 100c further includes at least one metal sheet 190 embedded in the second bearing seat 120, so as to improve the heat dissipation effect, and the lens module 100c can have a better imaging resolution. Here, the number of the metal pieces 190 may be one, for example, ring-shaped; alternatively, the number of the metal sheets 190 is plural, and the metal sheets are dispersedly disposed in the second bearing seat 120, which all fall within the protection scope of the present invention.
In summary, in the design of the lens module of the invention, the thermal conductivity of the second carrying seat is different from the thermal conductivity of the third carrying seat, and the thermal conductivity of one of the second carrying seat and the third carrying seat is between 0.9W/(m.k) and 20W/(m.k). That is to say, one of the second bearing seat and the third bearing seat adopts the high heat conduction material containing the plastic material, thereby improving the heat dissipation effect of the lens module and enabling the lens module to have better imaging resolution.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A lens module, comprising:
the first bearing seat is provided with a first accommodating space;
the second bearing seat is configured in the first accommodating space of the first bearing seat and is provided with a second accommodating space;
a third carrying seat disposed in the second accommodating space of the second carrying seat and having a third accommodating space, wherein the second carrying seat carries the third carrying seat, the thermal conductivity of the second carrying seat is different from that of the third carrying seat, and the thermal conductivity of one of the second carrying seat and the third carrying seat is between 0.9W/(m.k) and 20W/(m.k);
a plurality of lenses configured in the third accommodating space of the third bearing seat; and
the actuator comprises a coil component and a magnet component, wherein one of the coil component and the magnet component is arranged on the first bearing seat and is positioned in the first accommodating space, the other one of the coil component and the magnet component is arranged on the second bearing seat, and the coil component and the magnet component are arranged correspondingly to each other.
2. The lens module as claimed in claim 1, wherein the coil assembly is disposed on the first carrier and located in the first receiving space, and the magnet assembly is disposed on the second carrier.
3. The lens module as claimed in claim 1, wherein the thermal conductivity of the third carrier is greater than the thermal conductivity of the second carrier.
4. The lens module as claimed in claim 1, wherein the thermal conductivity of the second carrier is greater than the thermal conductivity of the third carrier.
5. The lens module of claim 1, wherein one of the second and third bearing seats is made of plastic, and the other of the second and third bearing seats is made of one of plastic mixed carbon and graphite or a combination thereof.
6. The lens module as claimed in claim 1, further comprising:
the fourth bearing seat is arranged above the first bearing seat and is provided with a fourth accommodating space; and
and the prism is configured in the fourth accommodating space of the fourth bearing seat and is arranged corresponding to the lenses.
7. The lens module as claimed in claim 6, wherein the first carrier has a first opening and the fourth carrier has a second opening, and the first opening communicates with the second opening.
8. The lens module as claimed in claim 1, further comprising:
the circuit carrier plate is arranged below the first bearing seat;
the sensor is configured on the circuit carrier plate;
the fixing piece is configured on the circuit carrier plate and defines a space with the circuit carrier plate; and
and the filter glass is arranged on the fixing piece and is arranged corresponding to the sensor and the lenses, wherein a vertical distance is formed between the filter glass and the sensor.
9. The lens module as claimed in claim 8, wherein the first carrier has a first opening, and the fixing member has a second opening, the second opening exposes a portion of the filter glass, and the first opening communicates with the second opening.
10. The lens module as claimed in claim 1, further comprising:
at least one metal sheet is embedded in the second bearing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110216785.6A CN112859277B (en) | 2021-02-26 | 2021-02-26 | Lens module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110216785.6A CN112859277B (en) | 2021-02-26 | 2021-02-26 | Lens module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112859277A CN112859277A (en) | 2021-05-28 |
| CN112859277B true CN112859277B (en) | 2022-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110216785.6A Active CN112859277B (en) | 2021-02-26 | 2021-02-26 | Lens module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112859277B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389556A (en) * | 2012-05-07 | 2013-11-13 | 奥林巴斯映像株式会社 | Lens device |
| CN111294496A (en) * | 2020-03-09 | 2020-06-16 | 吴江市旭威电子科技有限公司 | Optical camera lens |
| CN111314590A (en) * | 2020-03-05 | 2020-06-19 | 维沃移动通信有限公司 | Camera module and electronic equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102492626B1 (en) * | 2018-03-20 | 2023-01-27 | 엘지이노텍 주식회사 | A camera module and optical instrument including the same |
-
2021
- 2021-02-26 CN CN202110216785.6A patent/CN112859277B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389556A (en) * | 2012-05-07 | 2013-11-13 | 奥林巴斯映像株式会社 | Lens device |
| CN111314590A (en) * | 2020-03-05 | 2020-06-19 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN111294496A (en) * | 2020-03-09 | 2020-06-16 | 吴江市旭威电子科技有限公司 | Optical camera lens |
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| Publication number | Publication date |
|---|---|
| CN112859277A (en) | 2021-05-28 |
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