CN112505876B - Lens, image capturing device and electronic equipment - Google Patents
Lens, image capturing device and electronic equipment Download PDFInfo
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- CN112505876B CN112505876B CN201910801600.0A CN201910801600A CN112505876B CN 112505876 B CN112505876 B CN 112505876B CN 201910801600 A CN201910801600 A CN 201910801600A CN 112505876 B CN112505876 B CN 112505876B
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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
Abstract
The invention relates to a lens, comprising a lens barrel, wherein a first lens unit and a second lens unit are arranged in the lens barrel, a driving piece is arranged on the first lens unit, 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 direction of an optical axis; the second lens unit comprises a liquid lens, and the liquid lens is filled with a transparent solution, and the transparent solution is heated and expanded during zooming or focusing or is cooled and contracted during zooming or focusing so as to regulate the optical power of the liquid lens. The lens can avoid the use of a motor rotor and an induction coil, and effectively reduce the thickness of the lens module. The invention also relates to an image capturing device and electronic equipment.
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 device.
Background
The current zooming of the lens is realized by applying a voice coil motor, utilizing the magnetic induction effect of a coil to enable a motor rotor to move up and down under current control, and then realizing the aim of adjusting the far and near focus of the lens by a method of carrying a lens on the rotor.
However, the inventors found in the course of implementing the conventional technique that: the thickness of the lens module determines the thickness of the mobile phone, but the thickness of the lens module is easily increased because the lens needs a motor for zooming and the internal structure of the motor needs to be wound with a coil to realize electromagnetic induction.
Disclosure of Invention
Based on this, it is necessary to provide an improved lens against the problem of thicker module when the conventional lens is used to realize zooming.
A lens includes a lens barrel in which a first lens unit and a second lens unit are disposed, 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 includes a liquid lens filled with a transparent solution that expands thermally during zooming or focusing or contracts cold during zooming or focusing to regulate the optical power of the liquid lens.
The lens realizes adjustment of zooming and focusing by using the first lens unit capable of moving along the optical axis direction and the liquid lens with adjustable focal power, wherein the first lens unit is driven by a driving piece 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 further eliminated, and the module thickness of the lens can be effectively reduced; and the transparent solution with the thermal expansion and contraction properties 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 the far focus end to the near focus end is from the image side to the object side.
By moving the first lens unit from the image side to the object side, the lens can be adjusted from far focus to 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, at least two heat shrinkage pieces are arranged on one surface of the protective sleeve, which is close to the object side, one end of each heat shrinkage piece is connected with the protective sleeve, and the other end of each heat shrinkage piece, which is far away from the protective sleeve, extends along the direction parallel to the optical axis and is connected with the inner wall of the lens barrel.
The axial movement of the first lens unit on the optical axis is realized through the heated 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, 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 influence on imaging caused by direct contact between the heat shrinkage piece and the first lens unit can be avoided, and the collision suffered by the first lens unit can be buffered.
In one embodiment, the heat shrink member is rotationally symmetrically disposed on the protective sleeve with the optical axis as a rotation axis.
By the mode, the first lens unit can be kept horizontal in the process of being pulled by the heat shrinkage piece, inclination is avoided, and therefore imaging quality of the lens is improved.
In one embodiment, the inner wall of the lens barrel is provided with a groove along the direction parallel to the optical axis, and the groove is provided with a first groove wall parallel to the optical axis direction and a second groove wall perpendicular to the optical axis direction 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 contacted with the first groove wall and can move relative to the first groove wall; one end of the heat shrinkage piece 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, and 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 piece, the limiting elastic piece 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 distance between the limiting part and the second groove wall can be regulated and controlled by adjusting the length of the connecting part, so that accurate focusing can be realized on the lens.
In one embodiment, the liquid lens includes a transparent sheet connected to the inner wall of the lens barrel and close to the object side, and the curvature of the transparent sheet is not zero; the elastic transparent diaphragm is connected to the inner wall of the lens barrel and is close to the image side, and the curvature of the transparent diaphragm is adjustable;
the transparent thin sheet, the transparent membrane and the inner wall of the lens barrel form an accommodating space, the accommodating space is filled with the transparent solution, and the transparent solution is heated to expand to press the transparent membrane to deform or is cooled to shrink to press the transparent membrane to deform during zooming or focusing.
The object side surface material of the liquid lens is set to be a light-transmitting sheet, the image side surface material is set to be an elastic transparent film, and the transparent solution is filled in the accommodating space, so that the transparent film is pressed to deform when the transparent solution expands, or the transparent film is pressed to deform when the transparent solution is compressed by cold shrinkage external air pressure, so that the curvature of the transparent film is changed, and at the moment, the focal power of the liquid lens is also changed, and the zoom or focusing requirements of the lens can be met.
In one embodiment, the inner wall of the lens barrel is provided with a solution tank, and the light-transmitting sheet, the solution tank and the light-transmitting membrane are sequentially connected to form the accommodating space.
The expansion or contraction of the transparent solution can be buffered through the solution tank, so that the deformation of the transparent membrane due to the overlarge expansion and contraction amplitude of the transparent solution is avoided.
In one embodiment, the solution tank includes an annular groove extending in a direction parallel to the optical axis.
By arranging the solution tank as the annular groove, the expansion and contraction of the transparent solution can be more uniform, so that the transparent membrane is prevented from irregularly deforming.
In one embodiment, the solution tank includes a plurality of strip-shaped grooves, the plurality of strip-shaped grooves extend along a direction parallel to the optical axis, and are rotationally symmetrically disposed on the inner wall of the lens barrel with the optical axis as a rotation axis.
Through setting up the solution groove into a plurality of bar grooves that use the optical axis as rotation axis rotational symmetry setting, can make transparent solution's inflation shrink is more even, avoids transparent diaphragm takes place irregular deformation.
In one embodiment, the lens barrel is provided with a first power port and a second power port, the outer wall of the solution tank is provided with a resistance wire, and the resistance wire is connected between the first power port and the second power port.
The resistance wire heats through the thermal effect of the current, so that the transparent solution is heated, and the expansion amplitude of the transparent solution is conveniently regulated and controlled by utilizing a system program, so that precise zooming or focusing adjustment is realized.
In one embodiment, the resistance wire is wound around the solution tank.
The resistance wire is wound around the solution tank, so that the transparent solution can be heated and expanded uniformly, and irregular deformation of the transparent membrane is avoided.
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 into 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 zooming or focusing adjustment of the lens is facilitated.
In one embodiment, the lens barrel is made of a heat insulating material.
By setting the material of the lens barrel as a heat insulating material, the influence of the ambient temperature on the 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 the optical axis, and the second lens unit is located between the first lens unit and the third lens unit.
The imaging requirement of the lens can be further met by arranging the third lens unit, meanwhile, the aberration of the lens can be adjusted, and the imaging quality is improved.
The application also provides an image capturing device.
An image capturing device comprises a lens as described above; and the photosensitive element is arranged on the image side of the lens to receive the light carrying the image information formed by the lens.
According to the image capturing device, the lens is utilized to reduce the thickness of the module of the image capturing device, and meanwhile, the adjustment of zooming and focusing can be realized rapidly, so that the imaging quality is improved.
The application also provides electronic equipment.
An electronic device comprises a shell and an image capturing device, wherein the image capturing device is arranged on the shell and used for capturing images.
According to the electronic equipment, scene images with different distances can be obtained by using the imaging device, meanwhile, the imaging quality is improved, and the specialized shooting requirements of people are met.
Drawings
FIG. 1 is a schematic diagram of a lens assembly according to an embodiment of the present invention when the lens assembly is adjusted to a telephoto end;
FIG. 2 is an enlarged schematic view of part X of the embodiment shown in FIG. 1;
FIG. 3 is a schematic view illustrating a lens assembly according to an embodiment of the present invention when the lens assembly is adjusted to a near-focus end;
fig. 4 is an enlarged schematic view of a portion Y of the embodiment shown in fig. 3.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. 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 "fixed 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. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," "circumferential," and the like as used herein are based on the orientation or positional relationship shown in the drawings and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the 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 herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The motor mover in the conventional lens generally needs to use a coil to generate magnetic force for driving, so the lens module of the lens is generally made thicker. In addition, most of the motor movers cannot be completely kept horizontal in the vertical movement process, so that the mounted lens is inclined relative to the photosensitive element, and problems such as dark angle, distortion, increased phase difference, increased spherical aberration, poor resolution and the like are easily caused on imaging. In addition, because of the magnetization of the motor and other external factors, the problems that the motor rotor moves obliquely and the rated current does not reach the rated stroke and the like easily occur in the lens moving process, and the imaging effect of the lens is further affected.
The present invention is directed to a method for manufacturing a semiconductor device, and a semiconductor device manufactured by the method.
Referring to fig. 1, an embodiment of the present application provides a lens 100, including 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. As illustrated in fig. 1, the first lens unit 20, the second lens unit, and the third lens unit 40 are disposed in order from the object side to the image side along the optical axis.
The first lens unit 20 is provided with a driving member which contracts or expands under the influence of temperature during zooming or focusing, thereby driving the first lens unit 20 to move 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 power different from zero, and the moving direction of the at least one lens from the far focal end to the near focal end is from the image side to the object side. Preferably, the thickness of the lens module of the lens 100 can be further reduced when the first lens unit 20 adopts one lens. The shrinkage or expansion of the driving member is affected by temperature, so that the material can be selected from heat shrinkage material or material with memory effect.
The second lens unit is connected to the inner wall of the lens barrel 10, and comprises a liquid lens 30, wherein the liquid lens 30 is filled with a transparent solution 32, and the transparent solution 32 is heated and expanded during zooming or focusing or is cooled and contracted during zooming or focusing so as to regulate the optical power of the liquid lens 30. Specifically, at least one of the object-side surface material and the image-side surface material of the liquid lens 30 is provided as a transparent elastic material. For example, when the transparent solution 32 expands under heating, the at least one transparent elastic material deforms, so that the curvature of the transparent elastic material changes, and the optical power of the liquid lens 30 is adjusted. The transparent solution 32 may be a polyester-based compound solution having a thermal expansion property in consideration of factors such as refractive index, transmittance, and expansion rate. Of course, the transparent solution 32 may be a single solution.
The third lens unit 40 is disposed at a fixed position on the optical axis, and the optical power of the third lens unit 40 is not zero. It should be noted that the third lens unit 40 may be disposed according to the imaging requirement of the lens 100, for example, the aberration of the lens 100 may be improved and the imaging quality may be improved by disposing the third lens unit 40. 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 overall length of the optical system may be reduced, and miniaturization of the lens 100 may be achieved.
When adjusting the focal length of the lens 100, the movement distance of the first lens unit 20 and the expansion degree of the transparent solution 32 (i.e., the optical power of the liquid lens 30 is controlled) can be controlled by a circuit control system. The adjustment of the zoom and focus of the lens 100 can be more precisely achieved by means of the circuit control system.
Specifically, as shown in fig. 1 and 3, the upper side of the lens 100 (i.e., the side close to the first lens unit 20) is the object side, and the lower side of the lens 100 (i.e., the side close to the third lens unit 40) is the image side. For example, as shown in fig. 3, when the focal length of the lens 100 is adjusted from the far focal end to the near focal end, the first lens unit 20 rises along the optical axis, and the transparent solution 32 expands in the liquid lens 20 due to heat, so that the object side and/or the image side of the liquid lens 30 expands and protrudes, and the optical power of the liquid lens 30 is changed.
By utilizing the mode, the use of a motor rotor is avoided when the first lens unit 20 is driven to move along the optical axis direction, so that the arrangement of an induction coil can be removed, 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, so that the focal power of the liquid lens 30 can be regulated and controlled, and the preparation cost of the lens 100 can be reduced.
In an exemplary embodiment, as shown in fig. 2, the edge of the first lens unit 20 is coated with a protective sleeve 21, a gap is provided between the protective sleeve 21 and the 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 shrinkage pieces 22, one end of each heat shrinkage piece 22 is connected with the protective sleeve 21, and the other end far from the protective sleeve 21 extends along 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 to drive the first lens unit 20 to rise. When the temperature returns to the original temperature, the heat shrinkage member 22 expands to drive the first lens unit 20 to reset. Specifically, the heat-shrinkable member 22 may be made of a polymer material that shrinks when heated, or may be made of a metal having heat-shrinkable properties, such as antimony, gallium, or nickel-iron alloy.
Axial movement of the first lens unit 20 on the optical axis is realized by the heat shrinkage property of the heat shrinkage piece 22, so that the use of a motor rotor is avoided, an electromagnetic induction coil is not required, and the module thickness 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 heat shrinkage piece 22 can be prevented from directly contacting the first lens unit 20 to influence imaging, and collision on the first lens unit 20 can be buffered.
Further, the heat shrink member 22 is rotationally symmetrically disposed on the protective cover 21 with the optical axis as a rotation axis. Taking the example shown in fig. 1, the heat shrink members 22 are provided with four (only two are shown in fig. 1), and 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 heat shrink member 22 can be overlapped with another heat shrink member after rotating 90 ° around the optical axis. By the four corner connection, the first lens unit 20 can be kept horizontal in the process of being pulled by the heat shrinkage piece 22, so that inclination is avoided, and the imaging quality of the lens 100 is improved. Of course, in other embodiments, the heat shrink member may be provided in two, three, five, etc., and the rotation angle may be 180 °, 120 °, 72 ° or the like, respectively.
In an exemplary embodiment, as shown in fig. 2, the inner wall of the lens barrel 10 is provided with a groove 11 along a direction parallel to the optical axis, the groove 11 has a first groove wall 111 parallel to the optical axis direction and a second groove wall 112 perpendicular to the optical axis direction 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 is in contact with the first groove wall 111 and can move relative to the first groove wall 111, and one end of the heat shrinkage piece 22 away from the protective sleeve 21 is fixed on the second groove wall 112. When the zoom lens 100 is adjusted to the near-focus end, as shown in fig. 4, the balls 211 rise along the first groove wall 111 along with the first lens unit 20, thereby improving the stability during the rising of the first lens unit 20.
Specifically, the grooves 11 also have two or more corresponding to the heat shrink 22, and further, the grooves 11 may be bar-shaped grooves having an opening width slightly larger than the diameter of the balls 211 to reduce friction between the balls 211 and the walls of the bar-shaped grooves.
By providing the balls 211 on the protective cover 21 and restraining the balls 211 in the grooves 11, the balls 211 can be smoothly moved along the first groove wall 111, thereby ensuring smooth movement of the first lens unit 20. Preferably, the balls 211 may have a plurality of grooves corresponding to each groove 11 and are all 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 affects the imaging of the lens 100, the occurrence of problems such as a dark angle, distortion, spherical aberration, and poor resolution in imaging can be reduced or avoided in the above manner, and the imaging quality of the lens 100 can be improved.
Further, as shown in fig. 2, a limiting spring piece 23 is further disposed on the second groove wall 112, the limiting spring piece 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 away from the second groove wall 112 and parallel to the second groove wall 112, where 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 piece 23 contacts the object side surface of the first lens unit 20, thereby preventing the first lens unit 20 from moving further.
The limiting elastic piece 23 is arranged to limit the moving distance of the first lens unit 20, 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 along 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 light-transmitting sheet 31, the light-transmitting 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 light-transmitting 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 film 31, the transparent film 33 and the inner wall of the lens barrel 10 form a containing space, the containing space is filled with a transparent solution 32, and during zooming or focusing, the transparent solution 32 is heated to expand to press the transparent film 33 to deform, or the transparent solution 32 is cooled to shrink to press the transparent film 33 to deform under the external air pressure.
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 nanomembrane 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 expansion degree of the transparent film 33 is different corresponding to different focal lengths when the lens 100 is adjusted from the far focal end to the near focal end. As shown in fig. 3, the heat shrinkage member 22 has moved a maximum stroke, and the expansion of the transparent film 33 is also maximum, which means that the focal length of the lens 100 has been adjusted to the near-focal end.
By setting the object-side surface material of the liquid lens 30 as the light-transmitting sheet 31, setting the image-side surface material as the elastic transparent film 33, and filling the transparent solution 32 into the accommodating space, the transparent film 33 is deformed when the transparent solution 32 expands or contracts, so as to change the curvature of the transparent film 33, and at this time, the optical power of the liquid lens 30 is also changed, so that the zoom or focus requirement of the lens 100 can be satisfied.
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 film 33 are sequentially connected to form a containing space capable of containing the transparent solution 32. Specifically, the solution tank 12 has an open end to which the transparent sheet 31 and the transparent film 33 are connected, respectively, so that the space between the transparent sheet 31 and the transparent film 32 communicates with the solution tank 12, thereby forming the above-mentioned accommodation space. The expansion or contraction of the transparent solution 32 can be buffered by the solution tank 12, and the transparent membrane 33 is prevented from being deformed due to the excessive expansion or contraction width of the transparent solution 32. Preferably, the means for heating the transparent solution 32 may be disposed around the solution tank 12, so that the transparent solution between the transparent sheet 31 and the transparent film 33 is prevented from being directly heated, so that the transparent film 33 is not deformed beyond the rated value or irregularly due to an excessive expansion amplitude. In addition, the surface material of the solution tank 12 is a material that does not change with 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. In this way, the swelling and shrinking of the transparent solution 32 can be made more uniform, thereby avoiding irregular deformation of the transparent film 33.
In another embodiment, the solution tank 12 includes a plurality of strip-shaped grooves extending in a direction parallel to the optical axis and disposed on the inner wall of the lens barrel 10 in a rotationally symmetrical manner with the optical axis as a rotation axis. The number of the strip-shaped grooves can be two, three or four, the corresponding rotation angles can be 180 degrees, 120 degrees or 90 degrees, the number of the strip-shaped grooves can be set according to actual requirements, the expansion and contraction of the transparent solution 32 can be more uniform, irregular deformation of the transparent membrane 33 is avoided, meanwhile, consumption of lens barrel materials can be reduced, and the lens barrel 10 is firmer.
Further, as shown in fig. 1 and 3, the barrel 10 is provided with a first power port 13 and a second power port 14, the outer wall of the solution tank 12 is provided with a resistance wire 121, and the resistance wire 121 is connected between the first power port 13 and the second power port 14. Taking the example shown in fig. 1 and 3 as an example, the first power port 13 is set as a positive electrode, the second power port 14 is set as a negative electrode, and the transparent solution in the solution tank 12 is heated by heating the resistance wire 121 by the thermal effect of the current after the power is turned on. Further, 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 wound around the solution tank 12. Specifically, the resistance wire 121 may be directly wound on the outer wall of the solution tank 12, or may be disposed around the solution tank 12 by a slot wire arrangement. By winding the resistance wire 121 in contact with the solution tank 12, the transparent solution 32 can be heated more uniformly, and irregular deformation of the transparent film 33 can be avoided.
Further, the heat shrink 22 comprises a memory metal interposed between the first power port 13 and the second power port 14. In particular, the memory metal may be antimony, gallium, nickel-iron alloy, or the like. By setting the heat shrink 22 as memory metal, the memory metal and the resistance wire 121 can be connected into the same control circuit, and the contraction stroke of the memory metal and the expansion amplitude of the transparent solution 32 can be regulated and controlled by the same rated current, thereby facilitating the zooming or focusing adjustment of the lens 100.
In an exemplary embodiment, the lens barrel 10 is made of a heat insulating material. By setting the material of the lens barrel 10 as a heat insulating material, it is possible to avoid the influence of the ambient temperature on the zooming or focusing adjustment of the lens 100.
The present application also provides an image capturing device, including the lens 100 and a photosensitive element, where the photosensitive element is disposed on an image side of the lens 100 to receive light carrying image information formed by the lens 100.
Specifically, the photosensitive element may employ a complementary metal oxide semiconductor (CMOS, complementary Metal Oxide Semiconductor) image sensor or a Charge-coupled Device (CCD) image sensor.
The image capturing device can reduce the module thickness of the image capturing device by using the lens 100, and can also quickly realize adjustment of zooming and focusing, thereby improving the imaging quality. The image capturing device may be adapted to a device of limited size such as a portable electronic apparatus.
The application also provides electronic equipment, which comprises a shell and the image capturing device, wherein the image capturing device is arranged on the shell and used for capturing images.
Specifically, the image capturing device is arranged in the shell and is exposed from the shell to acquire an image, the shell can provide protection such as dust prevention, water prevention, falling prevention and the like for the image capturing device, and the shell is provided with a hole corresponding to the image capturing device so that light rays penetrate into or out of the shell from the hole.
According to the electronic equipment, the scenery images with different distances can be obtained by using the image capturing device, meanwhile, the imaging quality is improved, and the specialized shooting requirements of people are met. Note that the electronic devices according to the embodiments of the present application include, but are not limited to, information terminal devices such as mobile phones, car-mounted lenses, personal tablets, personal digital assistants, game machines, personal computers, cameras, and smart watches, home electric appliances having a photographing function, and the like.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (14)
1. A lens comprises a lens barrel, and is characterized in that a first lens unit and a second lens unit are arranged in the lens barrel,
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 and expanded during zooming or focusing or is cooled and contracted during zooming or focusing so as to regulate and control the focal power of the liquid lens;
the edge of the first lens unit is coated with a protective sleeve, a gap is reserved 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 shrinkage pieces, one end of each heat shrinkage piece is connected with the protective sleeve, and the other end of each heat shrinkage piece, which is far away from the protective sleeve, extends along the direction parallel to the optical axis and is connected with the inner wall of the lens barrel;
the inner wall of the lens barrel is provided with a groove along the direction parallel to the optical axis, and the groove is provided with a first groove wall parallel to the optical axis direction and a second groove wall perpendicular to the optical axis direction 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 contacted with the first groove wall and can move relative to the first groove wall;
one end of the heat shrinkage piece far away from the protective sleeve is fixed on the second groove wall;
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; the method comprises the steps of,
an elastic transparent diaphragm connected to the inner wall of the lens barrel and close to the image side, wherein the curvature of the transparent diaphragm is adjustable;
the transparent thin sheet, the transparent membrane and the inner wall of the lens barrel form an accommodating space, the accommodating space is filled with the transparent solution, and the transparent solution is heated to expand to press the transparent membrane to deform or is cooled to shrink to press the transparent membrane to deform during zooming or focusing.
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 far focus end to the near focus end is from the image side to the object side.
3. The lens according to claim 1, wherein the heat shrink member is rotationally symmetrically disposed on the protective cover with the optical axis as a rotation axis.
4. The lens according to claim 1, wherein the second groove wall is further provided with a limiting spring piece, the limiting spring piece includes a connecting portion connected with the second groove wall, and a limiting portion connected with an 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 a moving distance of the first lens unit along the optical axis direction.
5. The lens according to claim 1, wherein the inner wall of the lens barrel is provided with a solution tank, and the light-transmitting sheet, the solution tank and the transparent film are sequentially connected to form the accommodating space.
6. The lens of claim 5, wherein the solution tank includes an annular groove extending in a direction parallel to the optical axis.
7. The lens barrel according to claim 5, 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 lens barrel rotationally symmetrically about the optical axis as a rotation axis.
8. The lens barrel according to claim 5, 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, the resistance wire being interposed between the first power port and the second power port.
9. The lens of claim 8, wherein the resistance wire is windingly disposed around the solution tank.
10. The lens of claim 8, wherein the driver comprises a memory metal interposed between the first power port and the second power port.
11. The lens according to claim 1, wherein the barrel is made of a heat insulating material.
12. The lens barrel according to any one of claims 1 to 11, 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, the second lens unit being located between the first lens unit and the third lens unit.
13. An image capturing apparatus, comprising:
the lens barrel of any one of claims 1-12; the method comprises the steps of,
and the photosensitive element is arranged on the image side of the lens so as to receive the light carrying the image information and formed by the lens.
14. An electronic device, comprising:
a housing; the method comprises the steps of,
the image capturing device of claim 13, mounted on the housing for capturing an image.
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| CN201910801600.0A CN112505876B (en) | 2019-08-28 | 2019-08-28 | Lens, image capturing device and electronic equipment |
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| CN113315896B (en) * | 2021-05-20 | 2023-04-07 | 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 |
| CN113489876B (en) * | 2021-07-26 | 2023-05-23 | 维沃移动通信有限公司 | Camera module 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 |
| CN113985687B (en) * | 2021-09-30 | 2022-08-19 | 歌尔光学科技有限公司 | Lens component and projector |
| CN113759637B (en) * | 2021-09-30 | 2022-12-27 | 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 |
| 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 |
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