CN112505876A - Lens, image capturing device and electronic equipment - Google Patents
Lens, image capturing device and electronic equipment Download PDFInfo
- Publication number
- CN112505876A CN112505876A CN201910801600.0A CN201910801600A CN112505876A CN 112505876 A CN112505876 A CN 112505876A CN 201910801600 A CN201910801600 A CN 201910801600A CN 112505876 A CN112505876 A CN 112505876A
- Authority
- CN
- China
- Prior art keywords
- lens
- lens barrel
- transparent
- lens unit
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/004—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/12—Fluid-filled or evacuated lenses
- G02B3/14—Fluid-filled or evacuated lenses of variable focal length
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
本发明涉及一种镜头，包括镜筒，镜筒内设置有第一透镜单元和第二透镜单元，其中，第一透镜单元上设置有驱动件，在变焦或对焦期间，驱动件在温度的作用下收缩或膨胀，以带动第一透镜单元沿光轴方向移动；第二透镜单元包括液体透镜，液体透镜内充满透明溶液，透明溶液在变焦或对焦期间受热膨胀，或是在变焦或对焦期间受冷收缩，以调控液体透镜的光焦度。上述镜头，可以避免马达动子与感应线圈的使用，有效降低镜头模组的厚度。本发明还涉及一种取像装置及电子设备。
The present invention relates to a lens, comprising a lens barrel, a first lens unit and a second lens unit are arranged in the lens barrel, wherein a driving member is arranged on the first lens unit, and during zooming or focusing, the driving member is affected by the temperature The second lens unit includes a liquid lens, the liquid lens is filled with a transparent solution, and the transparent solution is heated and expanded during zooming or focusing, or is subjected to Cold shrinkage to adjust the optical power of the liquid lens. The above-mentioned lens can avoid the use of a motor mover and an induction coil, thereby effectively reducing the thickness of the lens module. The invention also relates to an imaging device and an electronic device.
Description
Technical Field
The present invention relates to the field of optical imaging technologies, and in particular, to a lens, an image capturing device and an electronic apparatus.
Background
In the existing lens zooming, a voice coil motor is applied, a motor mover is moved up and down by using the magnetic induction effect of a coil under the control of current, and then the purpose of adjusting the distance and the near focus of a lens is achieved by a method of carrying a lens on the mover.
However, the inventors found in the process of implementing the conventional technique that: the thickness of the lens module determines the thickness of the mobile phone, but since the lens needs a motor for zooming and the internal structure of the motor needs to be wound with a coil for electromagnetic induction, the thickness of the lens module is easily increased.
Disclosure of Invention
Accordingly, there is a need for an improved lens system for achieving zoom with a thicker module.
A lens barrel including a first lens unit and a second lens unit provided therein, wherein,
the first lens unit is provided with a driving piece, and the driving piece contracts or expands under the action of temperature during zooming or focusing so as to drive the first lens unit to move along the optical axis direction;
the second lens unit comprises a liquid lens, wherein the liquid lens is filled with a transparent solution, and the transparent solution is heated to expand during zooming or focusing or is cooled to contract during zooming or focusing so as to regulate and control the focal power of the liquid lens.
In the lens, the first lens unit capable of moving along the optical axis direction and the liquid lens with adjustable focal power are used for realizing the adjustment of zooming and focusing of the lens, wherein the first lens unit is driven by the driving part which contracts or expands under the action of temperature, so that the use of a motor rotor is avoided, the arrangement of an induction coil is eliminated, and the thickness of a module of the lens can be effectively reduced; and the transparent solution with the properties of expansion with heat and contraction with cold is used for filling the liquid lens, so that the focal power of the liquid lens can be conveniently regulated and controlled, and the preparation cost of the lens is reduced.
In one embodiment, the first lens unit includes at least one lens, and a moving direction of the at least one lens from a far-focus end to a near-focus end is from an image side to an object side.
By moving the first lens unit from the image side to the object side, the lens can be adjusted from a telephoto to a near focus.
In one embodiment, the edge of the first lens unit is covered with a protective sleeve, a gap is formed between the protective sleeve and the inner wall of the lens barrel, one surface of the protective sleeve, which is close to the object side, is provided with at least two heat shrinkable members, one end of each heat shrinkable member is connected with the protective sleeve, and the other end, which is far away from the protective sleeve, extends in a direction parallel to the optical axis and is connected with the inner wall of the lens barrel.
The first lens unit is axially moved on the optical axis through the heat shrinkage property of the heat shrinkage piece, so that the use of a motor rotor can be avoided, an electromagnetic induction coil is not required to be arranged, and the thickness of the lens can be further reduced; meanwhile, the protective sleeve is coated on the edge of the first lens unit, so that the imaging influence caused by direct contact between a heat shrinkage piece and the first lens unit can be avoided, and the collision of the first lens unit can be buffered.
In one embodiment, the heat shrinkable part is rotationally symmetrically arranged on the protective sleeve by taking an optical axis as a rotating axis.
Through the mode, the first lens unit can be kept horizontal in the process of being pulled by the heat shrinkage piece, so that the first lens unit is prevented from being inclined, and the imaging quality of the lens is improved.
In one embodiment, a groove is formed in the inner wall of the lens barrel along a direction parallel to the optical axis, and the groove has a first groove wall parallel to the optical axis and a second groove wall perpendicular to the optical axis and close to the object side; a ball is arranged between the protective sleeve and the first groove wall, the ball is rotatably embedded in the protective sleeve, and the ball is in contact with the first groove wall and can move relative to the first groove wall; one end of the thermal shrinkage piece, which is far away from the protective sleeve, is fixed on the second groove wall.
The ball is arranged on the protective sleeve and moves along the first groove wall, so that the first lens unit can be further ensured to move stably, the problems of dark angle, distortion, spherical aberration, poor resolution and the like during imaging are reduced or avoided, and the imaging quality of the lens is improved.
In one embodiment, the second groove wall is further provided with a limiting elastic sheet, the limiting elastic sheet comprises a connecting portion connected with the second groove wall and a limiting portion connected with one end of the connecting portion away from the second groove wall and parallel to the second groove wall, and the limiting portion is used for limiting the moving distance of the first lens unit along the optical axis direction.
The first lens unit can be limited in moving distance along the optical axis direction by the limiting elastic sheet, and the distance between the limiting portion and the second groove wall can be regulated and controlled by adjusting the length of the connecting portion, so that accurate focusing of the lens can be achieved.
In one embodiment, the liquid lens includes a transparent sheet connected to an inner wall of the lens barrel and close to the object side, and a curvature of the transparent sheet is not zero; the elastic transparent diaphragm is connected to the inner wall of the lens cone and is close to the image side, and the curvature of the transparent diaphragm is adjustable;
the transparent sheet, the transparent membrane and the inner wall of the lens cone form an accommodating space, the accommodating space is filled with the transparent solution, and during zooming or focusing, the transparent solution is compressed by thermal expansion to deform the transparent membrane or compressed by external air pressure due to cold contraction to deform the transparent membrane.
Through with the object side material of liquid lens sets up to the printing opacity thin slice, and like the side material sets up to the transparent diaphragm of elasticity, and pack into transparent solution in the accommodation space, can make oppression when transparent solution expands transparent diaphragm warp, perhaps transparent solution receives the external atmospheric pressure oppression of cold contraction transparent diaphragm warp, thereby changes the camber of transparent diaphragm, this moment the focal power of liquid lens also changes thereupon, can satisfy the zooming of camera lens or the requirement of focusing.
In one embodiment, a solution tank is disposed on an inner wall of the lens barrel, and the transparent sheet, the solution tank and the transparent membrane are sequentially connected to form the accommodating space.
The expansion or contraction of the transparent solution can be buffered through the solution tank, and the transparent membrane is prevented from being deformed due to overlarge expansion and contraction amplitude of the transparent solution.
In one embodiment, the solution tank comprises an annular groove extending in a direction parallel to the optical axis.
Through with the solution tank sets up to the ring channel can be so that transparent solution's breathing is more even, thereby avoids transparent diaphragm takes place irregular deformation.
In one embodiment, the solution tank includes a plurality of strip-shaped grooves, and the plurality of strip-shaped grooves extend in a direction parallel to the optical axis and are rotationally and symmetrically disposed on the inner wall of the lens barrel with the optical axis as a rotation axis.
Through inciting somebody to action the solution tank sets up to a plurality of bar grooves that use the optical axis to set up as rotation axis rotational symmetry, can make transparent solution's breathing is more even, avoids transparent diaphragm takes place irregular deformation.
In one embodiment, the lens barrel is provided with a first power supply port and a second power supply port, the outer wall of the solution tank is provided with a resistance wire, and the resistance wire is connected between the first power supply port and the second power supply port.
The resistance wire is heated by the heat effect of the current, so that the transparent solution is heated, the expansion amplitude of the transparent solution is conveniently regulated and controlled by using a system program, and accurate zooming or focusing adjustment is realized.
In one embodiment, the resistance wire is arranged around the solution tank in a winding manner.
The resistance wire is wound around the solution tank, so that the transparent solution can be uniformly heated and expanded, and the transparent membrane is prevented from being irregularly deformed.
In one embodiment, the driver includes a memory metal interposed between the first power port and the second power port.
The driving piece is made of memory metal, so that the memory metal and the resistance wire can be connected to the same control circuit, the contraction stroke of the memory metal and the expansion amplitude of the transparent solution are regulated and controlled through the same rated current, and the zoom or focus adjustment of the lens is facilitated.
In one embodiment, the lens barrel is made of a heat insulating material.
The material of the lens barrel is set to be heat-insulating material, so that the influence of the ambient temperature on zooming or focusing adjustment of the lens can be avoided.
In one embodiment, a third lens unit is further disposed in the lens barrel, the third lens unit is located at a fixed position on an optical axis, and the second lens unit is located between the first lens unit and the third lens unit.
The third lens unit can further meet the imaging requirement of the lens, and meanwhile, the aberration of the lens can be adjusted, so that the imaging quality is improved.
The application also provides an image capturing device.
An image capturing device comprises the lens barrel as described above; and the photosensitive element is arranged on the image side of the lens and used for receiving light which is formed by the lens and carries image information.
According to the image capturing device, the thickness of the module of the image capturing device can be reduced by using the lens, and meanwhile, the adjustment of zooming and focusing can be quickly realized, so that the imaging quality is improved.
The application also provides an electronic device.
An electronic device comprises a housing and the image capturing device as described above, wherein the image capturing device is mounted on the housing for capturing an image.
Above-mentioned electronic equipment utilizes like aforementioned image capture device can shoot and obtain the scenery image of far and near difference, and imaging quality also obtains promoting simultaneously, satisfies people's specialized shooting demand.
Drawings
Fig. 1 is a schematic structural diagram of a lens barrel according to an embodiment of the present invention when the lens barrel is adjusted to a far focus end;
FIG. 2 is an enlarged schematic view of a portion X of the embodiment of FIG. 1;
FIG. 3 is a schematic structural diagram of a lens barrel adjusted to a near-focus end according to an embodiment of the present invention;
fig. 4 is an enlarged view of the embodiment Y shown in fig. 3.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," "circumferential," and the like are based on the orientation or positional relationship shown in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
A motor mover in a conventional lens generally needs to be driven by a magnetic induction force generated by a coil, and thus a lens module of the lens is generally thicker. In addition, most of the motor rotors cannot be kept completely horizontal in the process of moving up and down, so that the mounted lens is inclined relative to the photosensitive element, and problems such as dark angle, distortion, phase difference increase, spherical aberration increase and poor resolution are caused in imaging. In addition, due to the existence of motor magnetization and other external factors, the problems of motor mover movement inclination, rated current not reaching the rated stroke and the like easily occur in the lens movement process, and further the imaging effect of the lens is influenced.
The defects existing in the above solutions are the results obtained after the inventor has practiced and studied carefully, so the discovery process of the above problems and the solutions proposed by the following embodiments of the present application for the above problems should be the contribution of the inventor to the present application in the process of the present application.
Referring to fig. 1, an embodiment of the present application provides a lens barrel 100, which includes a lens barrel 10, and a first lens unit 20, a second lens unit and a third lens unit 40 disposed in the lens barrel 10, wherein the second lens unit is located between the first lens unit 20 and the third lens unit 40. For example, as shown in fig. 1, the first lens unit 20, the second lens unit and the third lens unit 40 are arranged along an optical axis in order from an object side to an image side.
The first lens unit 20 is provided with a driving member, and the driving member contracts or expands under the temperature during zooming or focusing, thereby moving the first lens unit 20 in the optical axis direction. Specifically, the first lens unit 20 includes at least one lens movably connected to the inner wall of the lens barrel 10 and having a non-zero focal power, and the moving direction of the at least one lens from the far focus end to the near focus end is moving from the image side to the object side. Preferably, when one lens is used as the first lens unit 20, the thickness of the lens module of the lens 100 can be further reduced. The contraction or expansion of the driving member is affected by the temperature, so that the material can be selected from a heat-shrinkable material or a material with a memory effect.
The second lens unit is connected to the inner wall of the lens barrel 10 and includes a liquid lens 30, the liquid lens 30 is filled with a transparent solution 32, and the transparent solution 32 is heated to expand during zooming or focusing or is cooled to contract during zooming or focusing so as to adjust and control the focal power of the liquid lens 30. Specifically, at least one of the object side material and the image side material of the liquid lens 30 is provided as a transparent elastic material. For example, when the transparent solution 32 expands due to heat, the at least one transparent elastic material may deform, so that the curvature of the transparent elastic material changes, thereby adjusting the optical power of the liquid lens 30. The transparent solution 32 may be a polyester-based compound solution having a thermal expansion property in consideration of a refractive index, a transmittance, an expansion rate, and the like. Of course, the clear solution 32 may be a single solution.
The third lens unit 40 is disposed at a fixed position on the optical axis, and the power of the third lens unit 40 is not zero. It should be noted that the third lens unit 40 may be arranged according to the imaging requirements of the lens 100, for example, the aberration of the lens 100 may be improved by arranging the third lens unit 40, so as to improve the imaging quality. In an embodiment, the third lens unit 40 may be a combination of a plurality of lenses. Of course, in another embodiment, if the first lens unit 20 and the second lens unit 30 have achieved the required basic imaging requirements, the third lens unit 40 may not be provided, so that the total length of the optical system may be reduced and the lens 100 may be miniaturized.
When adjusting the focal length of the lens 100, the circuit control system can be used to control the moving distance of the first lens unit 20 and the swelling degree of the transparent solution 32 (i.e. to control the focal power of the liquid lens 30). The adjustment of the zoom and focus of the lens 100 can be more accurately realized by the circuit control system.
Specifically, as shown in fig. 1 and 3, an upper side of the lens 100 (i.e., a side close to the first lens unit 20) is an object side, and a lower side of the lens 100 (i.e., a side close to the third lens unit 40) is an image side. For example, taking fig. 3 as an example, when the focal length of the lens 100 is adjusted from the far-focus end to the near-focus end, the first lens unit 20 is raised along the optical axis, the transparent solution 32 is heated and expanded in the liquid lens 20, so that the object side surface and/or the image side surface of the liquid lens 30 is expanded and protruded, and the optical power of the liquid lens 30 is changed.
By using the above manner, when the first lens unit 20 is driven to move along the optical axis direction, the use of a motor mover is avoided, so that the arrangement of the induction coil can be eliminated, and the module thickness of the lens 100 is effectively reduced; meanwhile, the transparent solution 32 with thermal expansion property is used for filling the liquid lens 30 to regulate and control the focal power of the liquid lens 30, which is beneficial to reducing the preparation cost of the lens 100.
In an exemplary embodiment, as shown in fig. 2, an edge of the first lens unit 20 is coated with a protective sleeve 21, a gap is formed between the protective sleeve 21 and an inner wall of the lens barrel 10, one surface of the protective sleeve 21 close to the object side is provided with at least two heat shrink pieces 22, one end of each heat shrink piece 22 is connected with the protective sleeve 21, and the other end far away from the protective sleeve 21 extends in a direction parallel to the optical axis and is connected with the inner wall of the lens barrel 10. When the zoom lens 100 is adjusted to the near-focus end, as shown in fig. 4, the heat shrinkage member 22 shrinks under the action of temperature so as to drive the first lens unit 20 to rise. When the temperature returns to the original temperature, the thermal shrinkage member 22 expands to drive the first lens unit 20 to reset. Specifically, the material of the heat shrinkable member 22 may be a polymer material that shrinks when heated, or may be a metal with heat shrinkable property, such as antimony, gallium, or nickel-iron alloy.
The axial movement of the first lens unit 20 on the optical axis is realized through the heat-shrinkable property of the heat-shrinkable member 22, so that the use of a motor mover is avoided, an electromagnetic induction coil is not required to be arranged, and the thickness of the module of the lens 100 can be further reduced; meanwhile, the protective sleeve 21 is coated on the edge of the first lens unit 20, so that the thermal shrinkage piece 22 is prevented from being in direct contact with the first lens unit 20 to influence imaging, and the collision of the first lens unit 20 can be buffered.
Further, the heat shrinkable members 22 are provided on the protective cover 21 in rotational symmetry with the optical axis as a rotation axis. Taking fig. 1 as an example, four heat shrinkable members 22 (only two are shown in fig. 1) are provided on the protective cover 21 with the optical axis as the rotation axis and the rotation angle of 90 °, in other words, any one of the heat shrinkable members 22 can be overlapped with another heat shrinkable member after being rotated 90 ° around the optical axis. The first lens unit 20 can be kept horizontal in the process of being pulled by the heat shrinkage piece 22 by the four-corner connection manner, so that the first lens unit is prevented from being inclined, and the imaging quality of the lens 100 is improved. Of course, in other embodiments, the heat shrink may be provided in two, three, five, etc., and the rotational angle may correspond to 180 °, 120 °, 72 °, etc.
In an exemplary embodiment, as shown in fig. 2, a groove 11 is formed in an inner wall of the lens barrel 10 along a direction parallel to the optical axis, the groove 11 has a first groove wall 111 parallel to the optical axis and a second groove wall 112 perpendicular to the optical axis and close to the object side, a ball 211 is disposed between the protective sleeve 21 and the first groove wall 111, the ball 211 is rotatably embedded in the protective sleeve 21, the ball 211 contacts with the first groove wall 111 and can move relative to the first groove wall 111, and one end of the heat shrinkable member 22 away from the protective sleeve 21 is fixed to the second groove wall 112. When the zoom lens 100 is adjusted to the near-focus end, as shown in fig. 4, the ball 211 ascends along the first groove wall 111 along with the first lens unit 20, which improves the stability of the first lens unit 20 during the ascent.
Specifically, the groove 11 also has two or more than two corresponding to the heat shrinkable member 22, and further, the groove 11 may be a strip-shaped groove, and the opening width of the strip-shaped groove is slightly larger than the diameter of the ball 211, so as to reduce friction between the ball 211 and the groove wall of the strip-shaped groove.
By providing the ball 211 on the protective cover 21 and restraining the ball 211 in the groove 11, the ball 211 can smoothly move along the first groove wall 111, thereby ensuring smooth movement of the first lens unit 20. Preferably, the balls 211 may be provided in plural corresponding to each of the grooves 11 and arranged in a direction parallel to the optical axis to further secure the movement stability of the first lens unit 20. Since whether the first lens unit 10 moves smoothly or not affects the imaging of the lens 100, the problems of dark corners, distortion, spherical aberration, poor resolution and the like during imaging can be reduced or avoided, and the imaging quality of the lens 100 can be improved.
Further, as shown in fig. 2, the second groove wall 112 is further provided with a limiting elastic sheet 23, the limiting elastic sheet 23 includes a connecting portion 231 connected to the second groove wall 112, and a limiting portion 232 connected to an end of the connecting portion 231 far away from the second groove wall 112 and parallel to the second groove wall 112, and the limiting portion 232 is used for limiting a moving distance of the first lens unit 20 along the optical axis direction. When the zoom lens 100 is adjusted to the near-focus end, as shown in fig. 3, the elastic sheet 23 contacts the object-side surface of the first lens unit 20, thereby preventing the first lens unit 20 from moving further.
The moving distance of the first lens unit 20 can be limited by the limiting elastic sheet 23, so that the first lens unit 20 is prevented from colliding with the second groove wall 112, and meanwhile, the distance between the limiting part 232 and the second groove wall 112 can be regulated and controlled by adjusting the length of the connecting part 231, so that the moving distance of the first lens unit 20 in the optical axis direction is regulated and controlled, and the lens 100 is accurately focused.
In the exemplary embodiment, the liquid lens 30 includes a transparent sheet 31, the transparent sheet 31 is connected to the inner wall of the lens barrel 10 and is close to the object side, and the curvature of the transparent sheet 30 is not zero; and an elastic transparent film 33 connected to the inner wall of the lens barrel 10 and close to the image side, wherein the curvature of the transparent film 33 is adjustable, wherein the transparent sheet 31, the transparent film 33 and the inner wall of the lens barrel 10 form an accommodating space, the accommodating space is filled with a transparent solution 32, during zooming or focusing, the transparent solution 32 is heated to expand and press the transparent film 33 to deform, or the transparent solution 32 is cooled to contract and the external air pressure presses the transparent film 33 to deform.
Specifically, the transparent sheet 31 may be a hard thin lens, which is not affected by the swelling of the transparent solution 32; the transparent membrane 33 may be an elastic high-permeability nano-film capable of expanding with the expansion of the transparent solution 32 and contracting with the contraction of the transparent solution 32. It should be noted that the transparent solution 32 has corresponding expansion limits corresponding to different focal lengths of the lens 100, so that the transparent membrane 33 expands to different degrees corresponding to different focal lengths when the lens 100 is adjusted from the far-focus end to the near-focus end. Taking fig. 3 as an example, the thermal shrinkage member 22 has moved the maximum distance, and the expansion of the transparent film 33 is also the maximum, which indicates that the focal length of the lens 100 has been adjusted to the near-focus end.
By arranging the object side material of the liquid lens 30 as the transparent sheet 31, arranging the image side material as the elastic transparent film 33 and filling the accommodating space with the transparent solution 32, the transparent film 33 can deform along with the transparent film 33 when the transparent solution 32 expands or contracts, so that the curvature of the transparent film 33 is changed, the focal power of the liquid lens 30 is changed at the moment, and the zooming or focusing requirements of the lens 100 can be met.
Further, the inner wall of the lens barrel 10 is provided with a solution tank 12, and the transparent sheet 31, the solution tank 12 and the transparent membrane 33 are sequentially connected to form an accommodating space capable of accommodating the transparent solution 32. Specifically, the solution tank 12 has an open end to which the transparent sheet 31 and the transparent membrane 33 are connected, respectively, so that the space between the transparent sheet 31 and the transparent membrane 32 communicates with the solution tank 12, thereby forming the above-mentioned accommodating space. The expansion or contraction of the transparent solution 32 can be buffered by the solution tank 12, and the transparent film 33 is prevented from being deformed due to an excessively large expansion and contraction width of the transparent solution 32. Preferably, a device for heating the transparent solution 32 may be disposed around the solution tank 12, so as to prevent the transparent solution between the transparent sheet 31 and the transparent film 33 from being directly heated, so that the transparent film 33 is not deformed by an excessive expansion amplitude. The material of the surface of the solution tank 12 is a material that does not change with the expansion of the transparent solution 32, such as a carbon fiber material.
Further, the solution tank 12 includes an annular groove extending in a direction parallel to the optical axis. The expansion and contraction of the transparent solution 32 can be more uniform in the above manner, so that irregular deformation of the transparent membrane 33 is avoided.
In another embodiment, the solution tank 12 includes a plurality of strip-shaped tanks extending in a direction parallel to the optical axis and disposed on the inner wall of the lens barrel 10 in rotational symmetry with the optical axis as a rotation axis. Wherein the bar groove can set up to two, three, four, and its rotation angle that corresponds can be 180 °, 120 or 90 °, and the quantity of bar groove can set up according to the actual demand through setting up a plurality of bar grooves, can make transparent solution 32's breathing more even, avoids transparent diaphragm 33 to take place irregular deformation, also can reduce the consumption of lens cone material simultaneously, makes lens cone 10 more solid.
Further, as shown in fig. 1 and 3, a first power port 13 and a second power port 14 are provided on the lens barrel 10, a resistance wire 121 is provided on an outer wall of the solution tank 12, and the resistance wire 121 is connected between the first power port 13 and the second power port 14. Taking fig. 1 and 3 as an example, the first power supply port 13 is set as a positive electrode, the second power supply port 14 is set as a negative electrode, and the resistance wire 121 is heated by the thermal effect of the current after the energization, so as to heat the transparent solution in the solution tank 12. Furthermore, the current can be regulated and controlled by a system program, so that the expansion amplitude of the transparent solution 32 is regulated and controlled, and more accurate zooming or focusing adjustment is realized.
Further, the resistance wire 121 is provided in a winding manner around the solution tank 12. Specifically, the resistance wire 121 may be directly wound around the outer wall of the solution tank 12, or may be arranged around the solution tank 12 in a groove winding manner. By winding and contacting the resistance wire 121 and the solution tank 12, the transparent solution 32 can be heated more uniformly, and the irregular deformation of the transparent membrane 33 is avoided.
Further, the heat shrinkage member 22 includes a memory metal, and the memory metal is inserted between the first power supply port 13 and the second power supply port 14. Specifically, the memory metal may be antimony, gallium, or nickel-iron alloy. By setting the thermal shrinkage member 22 as memory metal, the memory metal and the resistance wire 121 can be connected to the same control circuit, and the shrinkage stroke of the memory metal and the expansion amplitude of the transparent solution 32 can be regulated and controlled by the same rated current, which is convenient for the zoom or focus adjustment of the lens 100.
In an exemplary embodiment, the material of the lens barrel 10 is a heat insulating material. By setting the material of the lens barrel 10 as a heat insulating material, the influence of the ambient temperature on the zoom or focus adjustment of the lens barrel 100 can be avoided.
The present application further provides an image capturing apparatus, which includes the lens 100 and the photosensitive element, disposed at the image side of the lens 100, for receiving the light carrying the image information formed by the lens 100.
Specifically, the photosensitive element may employ a Complementary Metal Oxide Semiconductor (CMOS) image sensor or a Charge-coupled Device (CCD) image sensor.
The image capturing device can reduce the thickness of the module of the image capturing device by using the lens 100, and can also quickly realize the adjustment of zooming and focusing, thereby improving the imaging quality. The image capturing apparatus can be adapted to an apparatus having a limited size such as a portable electronic device.
The present application further provides an electronic device, which includes a housing and the image capturing device as described above, wherein the image capturing device is mounted on the housing for capturing an image.
Specifically, get for instance the device setting in the casing and expose from the casing in order to acquire the image, the casing can provide protection such as dustproof, waterproof falling for getting for instance the device, has seted up the hole that corresponds with getting for instance the device on the casing to make light penetrate or wear out the casing from the hole.
Above-mentioned electronic equipment utilizes like the above-mentioned image capture device can shoot and obtain the scenery image of far and near difference, and imaging quality also obtains promoting simultaneously, satisfies people's specialized shooting demand. Note that the electronic device according to the embodiment of the present application includes, but is not limited to, an information terminal device such as a mobile phone, an automotive lens, a personal tablet, a personal digital assistant, a game machine, a personal computer, a camera, and a smart watch, a home appliance having a photographing function, and the like.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (17)
1. A lens barrel including a lens barrel, characterized in that a first lens unit and a second lens unit are provided in the lens barrel, wherein,
the first lens unit is provided with a driving piece, and the driving piece contracts or expands under the action of temperature during zooming or focusing so as to drive the first lens unit to move along the optical axis direction;
the second lens unit comprises a liquid lens, wherein the liquid lens is filled with a transparent solution, and the transparent solution is heated to expand during zooming or focusing or is cooled to contract during zooming or focusing so as to regulate and control the focal power of the liquid lens.
2. The lens barrel according to claim 1, wherein the first lens unit includes at least one lens, and a moving direction of the at least one lens from the telephoto end to the telephoto end is moving from the image side to the object side.
3. The lens barrel according to claim 2, wherein an edge of the first lens unit is covered with a protective cover, a gap is formed between the protective cover and an inner wall of the lens barrel, one surface of the protective cover, which is close to the object side, is provided with at least two heat shrinkable members, one end of each heat shrinkable member is connected to the protective cover, and the other end of each heat shrinkable member, which is far away from the protective cover, extends in a direction parallel to the optical axis and is connected to the inner wall of the lens barrel.
4. The lens barrel according to claim 3, wherein the heat shrinkage member is provided on the protective sleeve in rotational symmetry with an optical axis as a rotation axis.
5. The lens barrel according to claim 3, wherein the inner wall of the lens barrel is formed with a groove along a direction parallel to the optical axis, the groove having a first groove wall parallel to the optical axis and a second groove wall perpendicular to the optical axis and close to the object side;
a ball is arranged between the protective sleeve and the first groove wall, the ball is rotatably embedded in the protective sleeve, and the ball is in contact with the first groove wall and can move relative to the first groove wall;
one end of the thermal shrinkage piece, which is far away from the protective sleeve, is fixed on the second groove wall.
6. The lens barrel according to claim 5, wherein a position-limiting elastic sheet is further disposed on the second groove wall, the position-limiting elastic sheet includes a connecting portion connected to the second groove wall, and a position-limiting portion connected to an end of the connecting portion away from the second groove wall and parallel to the second groove wall, the position-limiting portion is configured to limit a moving distance of the first lens unit along the optical axis direction.
7. The lens barrel as claimed in claim 1, wherein the liquid lens includes:
the light-transmitting sheet is connected to the inner wall of the lens barrel and is close to the object side, and the curvature of the light-transmitting sheet is not zero; and the number of the first and second groups,
the elastic transparent diaphragm is connected to the inner wall of the lens cone and is close to the image side, and the curvature of the transparent diaphragm is adjustable;
the transparent sheet, the transparent membrane and the inner wall of the lens cone form an accommodating space, the accommodating space is filled with the transparent solution, and during zooming or focusing, the transparent solution is compressed by thermal expansion to deform the transparent membrane or compressed by external air pressure due to cold contraction to deform the transparent membrane.
8. The lens barrel according to claim 7, wherein a solution tank is formed in an inner wall of the lens barrel, and the transparent sheet, the solution tank and the transparent film are sequentially connected to form the accommodating space.
9. The lens barrel according to claim 8, wherein the solution tank includes an annular groove extending in a direction parallel to the optical axis.
10. The lens barrel according to claim 8, wherein the solution tank includes a plurality of strip-shaped grooves extending in a direction parallel to the optical axis and disposed on the inner wall of the barrel in rotational symmetry with the optical axis as a rotation axis.
11. The lens barrel according to claim 8, wherein a first power port and a second power port are provided on the lens barrel, and a resistance wire is provided on an outer wall of the solution tank, and the resistance wire is connected between the first power port and the second power port.
12. The lens barrel as claimed in claim 11, wherein the resistance wire is provided wound around the solution tank.
13. The lens barrel as claimed in claim 11, wherein the driving member includes a memory metal interposed between the first power port and the second power port.
14. The lens barrel according to claim 1, wherein the lens barrel is made of a heat insulating material.
15. A lens barrel according to any one of claims 1 to 14, wherein a third lens unit is further provided in the lens barrel, the third lens unit being located at a fixed position on the optical axis, and the second lens unit being located between the first lens unit and the third lens unit.
16. An image capturing apparatus, comprising:
a lens barrel as claimed in any one of claims 1 to 15; and the number of the first and second groups,
the photosensitive element is arranged on the image side of the lens and used for receiving light which is formed by the lens and carries image information.
17. An electronic device, comprising:
a housing; and the number of the first and second groups,
the image capturing device as claimed in claim 16, wherein the image capturing device is mounted on the housing for capturing images.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910801600.0A CN112505876B (en) | 2019-08-28 | 2019-08-28 | Lenses, imaging devices and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910801600.0A CN112505876B (en) | 2019-08-28 | 2019-08-28 | Lenses, imaging devices and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112505876A true CN112505876A (en) | 2021-03-16 |
| CN112505876B CN112505876B (en) | 2024-01-16 |
Family
ID=74923602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910801600.0A Expired - Fee Related CN112505876B (en) | 2019-08-28 | 2019-08-28 | Lenses, imaging devices and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112505876B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113315896A (en) * | 2021-05-20 | 2021-08-27 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN113406841A (en) * | 2021-06-23 | 2021-09-17 | 罗小红 | Automatic focusing device for digital camera lens and lens |
| CN113489876A (en) * | 2021-07-26 | 2021-10-08 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN113759637A (en) * | 2021-09-30 | 2021-12-07 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN113985687A (en) * | 2021-09-30 | 2022-01-28 | 歌尔光学科技有限公司 | Lens assembly and projector |
| CN114114484A (en) * | 2021-11-09 | 2022-03-01 | 珠海格力电器股份有限公司 | Lens, zoom lens, terminal and lens zooming control method |
| CN114755831A (en) * | 2022-04-25 | 2022-07-15 | 浙江徕智家未来科技有限公司 | Stable imaging optical lens for floating virtual imaging |
| WO2023010350A1 (en) * | 2021-08-04 | 2023-02-09 | 北京小米移动软件有限公司 | Zoom imaging lens, camera device, and electronic device |
| CN116661184A (en) * | 2023-05-31 | 2023-08-29 | 绵阳惠科光电科技有限公司 | Display panel, manufacturing method thereof and display device |
| CN119024538A (en) * | 2024-10-31 | 2024-11-26 | 上海信智精密光学有限公司 | Fisheye lens for vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408658A (en) * | 2007-10-09 | 2009-04-15 | 一品光学工业股份有限公司 | Lens shift mechanism with shape memory alloy |
| CN101836135A (en) * | 2007-10-08 | 2010-09-15 | 黑眼睛光学有限公司 | Liquid optics zoom lens and imaging apparatus |
| CN203164572U (en) * | 2013-04-24 | 2013-08-28 | 蔡陆青 | Dual automatic zoom lens, image capture module group thereof and mobile communication apparatus |
| US20140183264A1 (en) * | 2012-12-26 | 2014-07-03 | Cognex Corporation | Constant magnification lens for vision system camera |
| TW201514659A (en) * | 2013-10-08 | 2015-04-16 | Wistron Corp | Lens module and speaker module |
| KR20180074873A (en) * | 2016-12-23 | 2018-07-04 | 재단법인대구경북과학기술원 | Focusble fluid lens |
-
2019
- 2019-08-28 CN CN201910801600.0A patent/CN112505876B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101836135A (en) * | 2007-10-08 | 2010-09-15 | 黑眼睛光学有限公司 | Liquid optics zoom lens and imaging apparatus |
| CN101408658A (en) * | 2007-10-09 | 2009-04-15 | 一品光学工业股份有限公司 | Lens shift mechanism with shape memory alloy |
| US20140183264A1 (en) * | 2012-12-26 | 2014-07-03 | Cognex Corporation | Constant magnification lens for vision system camera |
| US20170235027A1 (en) * | 2012-12-26 | 2017-08-17 | Cognex Corporation | Constant magnification lens for vision system camera |
| CN203164572U (en) * | 2013-04-24 | 2013-08-28 | 蔡陆青 | Dual automatic zoom lens, image capture module group thereof and mobile communication apparatus |
| TW201514659A (en) * | 2013-10-08 | 2015-04-16 | Wistron Corp | Lens module and speaker module |
| KR20180074873A (en) * | 2016-12-23 | 2018-07-04 | 재단법인대구경북과학기술원 | Focusble fluid lens |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113315896A (en) * | 2021-05-20 | 2021-08-27 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN113406841A (en) * | 2021-06-23 | 2021-09-17 | 罗小红 | Automatic focusing device for digital camera lens and lens |
| CN113489876A (en) * | 2021-07-26 | 2021-10-08 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN113489876B (en) * | 2021-07-26 | 2023-05-23 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN116134345A (en) * | 2021-08-04 | 2023-05-16 | 北京小米移动软件有限公司 | Zoom imaging lens, camera device and electronic equipment |
| WO2023010350A1 (en) * | 2021-08-04 | 2023-02-09 | 北京小米移动软件有限公司 | Zoom imaging lens, camera device, and electronic device |
| CN113759637B (en) * | 2021-09-30 | 2022-12-27 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN113985687B (en) * | 2021-09-30 | 2022-08-19 | 歌尔光学科技有限公司 | Lens component and projector |
| CN113985687A (en) * | 2021-09-30 | 2022-01-28 | 歌尔光学科技有限公司 | Lens assembly and projector |
| CN113759637A (en) * | 2021-09-30 | 2021-12-07 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN114114484A (en) * | 2021-11-09 | 2022-03-01 | 珠海格力电器股份有限公司 | Lens, zoom lens, terminal and lens zooming control method |
| CN114755831A (en) * | 2022-04-25 | 2022-07-15 | 浙江徕智家未来科技有限公司 | Stable imaging optical lens for floating virtual imaging |
| CN114755831B (en) * | 2022-04-25 | 2023-08-22 | 浙江徕智家未来科技有限公司 | Stable imaging optical lens for floating virtual imaging |
| CN116661184A (en) * | 2023-05-31 | 2023-08-29 | 绵阳惠科光电科技有限公司 | Display panel, manufacturing method thereof and display device |
| CN116661184B (en) * | 2023-05-31 | 2024-10-11 | 绵阳惠科光电科技有限公司 | Display panel, manufacturing method thereof and display device |
| CN119024538A (en) * | 2024-10-31 | 2024-11-26 | 上海信智精密光学有限公司 | Fisheye lens for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112505876B (en) | 2024-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112505876A (en) | Lens, image capturing device and electronic equipment | |
| US7626621B2 (en) | Solid-state image pickup device and optical instrument using the same for adjusting curvatures of solid-state image pickup device based on focal length of lenses in optical instrument | |
| TWI629531B (en) | Image lens group, image capturing device and electronic device | |
| US7683968B2 (en) | Image-taking apparatus | |
| US8325265B2 (en) | Camera module having extended depth of focus mode and autofocus mode and method of operating the same | |
| JP5292334B2 (en) | Lens barrel and imaging device | |
| CN101373253B (en) | Imaging device, and control method for imaging device | |
| EP3136707A1 (en) | Image shooting terminal and image shooting method | |
| JP5967544B2 (en) | Lens barrel, imaging device, and camera | |
| CN109307922A (en) | Image lens system, image capturing device and electronic device | |
| CN101771816A (en) | Portable electronic device and imaging method | |
| CN111580237A (en) | Electronic equipment and control method thereof | |
| JP2005049536A (en) | Electronic imaging device and portable terminal device having the same | |
| US8791987B2 (en) | Portable electronic device with 3D image capture capability and image difference control method thereof | |
| CN111277740A (en) | Control method, imaging module, electronic device and storage medium | |
| CN101848333B (en) | Imaging device and focusing method thereof | |
| CN214675328U (en) | Camera module and electronic equipment | |
| CN210867915U (en) | Imaging modules and electronic devices | |
| CN103024199A (en) | Smart camera cellphone | |
| US6839190B2 (en) | Optical apparatus and imaging apparatus using the same | |
| CN110456591A (en) | Focal length adjusting device and mobile terminal | |
| US7701507B2 (en) | Digital camera module having linear voice coil actuator | |
| JP2013047731A (en) | Barrel and imaging apparatus | |
| KR102326837B1 (en) | Imaging apparatus and method for operating the same | |
| KR20160003484A (en) | Zoom lens for photographing in omni-direction and photographing apparatus having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210610 Address after: No.7, Shenzhou Road, Science City, Guangzhou New Technology Industrial Development Zone, Guangdong 510000 Applicant after: Guangzhou delta Imaging Technology Co.,Ltd. Address before: 330096 no.1404, Tianxiang North Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Applicant before: Jiangxi Jingrun optics Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20241029 Address after: 519000 Room 105-74257, No. 6 Baohua Road, Hengqin New District, Zhuhai City, Guangdong Province (centralized office area) Patentee after: Zhuhai Delta Technology Co.,Ltd. Country or region after: China Address before: No.7, Shenzhou Road, Science City, Guangzhou New Technology Industrial Development Zone, Guangdong 510000 Patentee before: Guangzhou delta Imaging Technology Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20240116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |