CN114690366A - Zoom lens - Google Patents
Zoom lens Download PDFInfo
- Publication number
- CN114690366A CN114690366A CN202210330964.7A CN202210330964A CN114690366A CN 114690366 A CN114690366 A CN 114690366A CN 202210330964 A CN202210330964 A CN 202210330964A CN 114690366 A CN114690366 A CN 114690366A
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- China
- Prior art keywords
- lens
- end plate
- annular end
- barrel
- optical axis
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
Abstract
The present invention provides a zoom lens, including: a first lens barrel having a first fixing portion; the first lens is fixed in the first lens barrel; the second lens cone is provided with a first slide rail, wherein the first fixing part is arranged on the first slide rail in a sliding manner; a second lens fixed in the second barrel, an optical axis of the second lens being configured to coincide with an optical axis of the first lens; the first piezoelectric motor is fixed on the first lens barrel or the second lens barrel and used for driving the first fixing part to move along the first slide rail so as to increase or decrease the distance between the first lens and the second lens. The zoom lens ensures that the zoom lens can realize the zooming function, and simultaneously can ensure that the volume of the zoom lens is smaller.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of optics, in particular to a zoom lens.
[ background ] A method for producing a semiconductor device
The existing zoom lens usually adopts a voice coil motor or a stepping motor to drive a lens to move in cooperation with a mechanical structure, so that the zoom function is realized.
However, the voice coil motor and the stepping motor are large in size, and both the voice coil motor and the stepping motor need complicated mechanical structures to cooperate with the voice coil motor and the stepping motor to drive the lens to move, so that the zoom lens equipped with the voice coil motor or the stepping motor is large in size.
Therefore, it is necessary to provide a zoom lens which can be made smaller while ensuring that the zoom lens can achieve a zooming function.
[ summary of the invention ]
The invention aims to provide a zoom lens, which can ensure that the zoom lens can realize a zooming function and can also ensure that the volume of the zoom lens is small.
The technical scheme of the invention is that the zoom lens comprises: a first lens barrel having a first fixing portion; the first lens is fixed in the first lens barrel; the second lens cone is provided with a first slide rail, wherein the first fixing part is arranged on the first slide rail in a sliding manner; the second lens is fixed in the second lens barrel, and the optical axis of the second lens is configured to be coincident with the optical axis of the first lens; the first piezoelectric motor is fixed on the first lens cone or the second lens cone and used for driving the first fixing part to move along the first slide rail, so that the distance between the first lens and the second lens is increased or decreased.
The invention has the beneficial effects that: the piezoelectric motor with small volume is used as a driving source, and the piezoelectric motor does not need to be matched with a complex mechanical structure and only needs to be matched with a fixing part which is arranged on the sliding rail in a sliding way, so that the zoom function of the zoom lens can be realized, and the volume of the zoom lens is small; in addition, when the lens needs to be stored, the first piezoelectric motor can drive the first fixing part to move along the first slide rail and reduce the distance between the first lens and the second lens, so that the overlapping part of the first lens barrel and the second lens barrel in the optical axis direction is increased, and the volume of the zoom lens is further reduced.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of a zoom lens according to the present invention;
FIG. 2 is an exploded view of a zoom lens provided in the present invention;
fig. 3 is a schematic structural diagram of a first lens barrel according to the present invention;
fig. 4 is a schematic structural diagram of a second lens barrel according to the present invention;
fig. 5 is a schematic structural diagram of another view angle of the second barrel according to the present invention;
fig. 6 is a schematic structural diagram of a third lens barrel according to the present invention.
[ detailed description ] embodiments
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1 to 5, a zoom lens provided by the present invention includes: a first barrel 110 having a first fixing portion 111; a first lens 120 fixed in the first barrel 110; a second barrel 130 having a first slide rail 131, wherein the first fixing portion 111 is slidably disposed on the first slide rail 131; a second lens 140 fixed in the second barrel 130, an optical axis of the second lens 140 being configured to coincide with an optical axis of the first lens 120; the first piezoelectric motor 150 is fixed to the first barrel 110 or the second barrel 130 and is used for driving the first fixing portion 111 to move along the first slide rail 131, so that the distance between the first lens 120 and the second lens 140 is increased or decreased.
Specifically, since the first fixing portion 111 is slidably disposed on the first slide rail 131, the first fixing portion 111 belongs to the first barrel 110, and the first slide rail 131 belongs to the second barrel 130, the first fixing portion 111 can slide along the extending direction of the first slide rail 131 relative to the second barrel 130.
The arrangement position of the first piezoelectric motor 150 is not limited, when the first piezoelectric motor 150 is fixed to the first lens barrel 110, the first piezoelectric motor 150 can be attached to the second lens barrel 130, and when the first piezoelectric motor 150 is driven, the first piezoelectric motor 150 slides along the extension direction of the first slide rail 131 relative to the second lens barrel 130 and drives the first lens barrel 110 to move; when the first piezoelectric motor 150 is fixed to the second barrel 130, the first piezoelectric motor 150 can be attached to the first barrel 110, and when the first piezoelectric motor 150 is driven, the first barrel 110 is driven by the first piezoelectric motor 150 to slide along the extending direction of the first slide rail 131.
In the present invention, when the zoom lens needs to be zoomed, the first piezoelectric motor 150 is powered to drive the first fixing part 111 to move along the first slide rail 131 by the first piezoelectric motor 150, so that the distance between the first lens 120 and the second lens 140 is increased or decreased.
With continued reference to fig. 1 to 5, in some embodiments, the second barrel 130 includes a first cylindrical sidewall 133 enclosing a first accommodating space 132, a first object-side annular end plate 134 extending from an object-side edge of the first cylindrical sidewall 133 to bend toward the optical axis, and a first image-side annular end plate 135 extending from an image-side edge of the first cylindrical sidewall 133 to bend toward the optical axis, wherein the first object-side annular end plate 134 and the first image-side annular end plate 135 are disposed opposite to each other in the optical axis direction and form a first piezoelectric motor accommodating groove 136 located in the first accommodating space 132 therebetween; at least part of the first barrel 110 is placed into the first accommodating space 132 from the inner hole of the first object-side annular end plate 134; the second lens 140 is fixed in the inner hole of the first image-side annular end plate 135; the first piezoelectric motor 150 is fixed in the first piezoelectric motor accommodating groove 136 and attached to the first barrel 110.
In the arrangement where the first object-side annular end plate 134 and the first image-side annular end plate 135 are opposite to each other in the optical axis direction, the optical axis may be the optical axis of the first lens 120 or the optical axis of the second lens 140; in fact, since the optical axis of the second lens 140 is configured to coincide with the optical axis of the first lens 130, the optical axis is the optical axis of the first lens 120 and also the optical axis of the second lens 140.
The first piezoelectric motor accommodating groove 136 may be the entire region between the first object-side ring end plate 134 and the first image-side ring end plate 135, or may be a partial region between the first object-side ring end plate 134 and the first image-side ring end plate 135.
The first piezoelectric motor 150 is fixed in the first piezoelectric motor accommodating groove 136, that is, the first piezoelectric motor 150 is fixed in the second lens barrel 130; by attaching the first piezoelectric motor 150 to the first lens barrel 110, when the first piezoelectric motor 150 is driven, the first fixing portion 111 of the first lens barrel 110 is pushed to move along the extending direction of the first slide rail 131 by the wavy creeping motion of the surface of the first piezoelectric motor 150 in contact with the first lens barrel 110, so that the first lens barrel 110 moves relative to the second lens barrel 130, and the first lens barrel 110 drives the first lens 120 to move relative to the second lens 140, so as to increase or decrease the distance between the first lens 110 and the second lens 140, and zoom the zoom lens.
In addition, when the zoom lens needs to be stored, the first barrel 110 moves relative to the second barrel 130 through the first piezoelectric motor 150, and the distance between the first lens 120 and the second lens 140 is reduced, so that more parts of the first barrel 110 can be stored in the first storage space 132, the overlapping part of the first barrel 110 and the second barrel 140 in the optical axis direction is increased, and the volume of the zoom lens is further reduced.
With continued reference to fig. 1 to 5, in some embodiments, the first object-side annular end plate 134 is provided with a first notch 137 extending from an inner hole edge thereof to the first cylindrical side wall 133 along a direction perpendicular to the optical axis, and the first notch 137 forms two notch edges on the first object-side annular end plate 134, which are oppositely disposed in a direction surrounding the optical axis; the second barrel 130 further has two parallel first guide plates 138 extending from the edge of the first notch 137 toward the first image-side annular end plate 135 in the optical axis direction and disposed opposite to each other in the direction around the optical axis, and the two first guide plates 138 and the first cylindrical sidewall 133 together enclose a first slide rail 131; the first barrel 110 further has a cylindrical main body 113 enclosing a lens accommodating space 112, at least a portion of the cylindrical main body 113 is disposed in the first accommodating space 132, and the first fixing portion 111 is fixed on the cylindrical main body 113 and embedded in the first slide rail 131.
Specifically, since the first notch 137 is located on the first object-side annular end plate 134, and the two first guide plates 138 and the first cylindrical side wall 133 together enclose the first slide rail 131, one end of the first slide rail 131 is disposed at the first notch 137 on the first object-side annular end plate 134, and the other end of the first slide rail 131 is located at one end of the first guide plate 138 away from the first object-side annular end plate 134.
In one embodiment, the first guiding plate 138 extends from the edge of the first notch 137 to the first image-side annular end plate 135, and the other end of the first sliding rail 131 is located at the connection point of the first image-side annular end plate 135 and the first guiding plate 138.
In this way, after the first piezoelectric motor 150 is powered on, the first barrel 110 is driven to move, so that the first fixing portion 111 slides between the first slide rails 131 formed by the two first guide plates 138 and the first cylindrical side wall 133, and the first barrel 110 moves relative to the second barrel 130, thereby increasing or decreasing the distance between the first lens 110 and the second lens 140.
In some embodiments, the first lens 110 is fixed to the object-side end of the cylindrical body portion 113.
With continued reference to fig. 1-5, in some embodiments, the zoom lens further comprises: a first ball 160; the first guide plate 138 is provided with a first ball receiving groove 139, the first fixing portion 111 is provided with a second ball receiving groove 114 opposite to the first ball receiving groove 139, a part of the first balls 160 is located in the first ball receiving groove 139, another part of the first balls 160 is located in the second ball receiving groove 114, and the first fixing portion 111 is slidably disposed on the first slide rail 131 via the first balls 160.
Specifically, the first guide plate 138 extends from the edge of the first notch 137 toward the first image-side annular end plate 135, and the first ball receiving groove 139 provided in the first guide plate 138 extends in the same direction as the first guide plate 138. The first balls 160 located in the first ball receiving grooves 139 can move along the extending direction of the first ball receiving grooves 139, so that the second ball receiving grooves 114 can move along the extending direction of the first ball receiving grooves 139 through the first balls 160, and the first fixing portion 111 can move along the extending direction of the first guide plate 138.
In one embodiment, the second ball-receiving groove 114 is sized larger than the portion of the first ball 160 located in the second ball-receiving groove 114, such that the first ball 160 can move within the second ball-receiving groove 114.
In yet another embodiment, the second ball-receiving groove 114 is sized to fit the portion of the first ball 160 located within the second ball-receiving groove 114 such that the first ball 160 is confined within the second ball-receiving groove 114 and the first ball 160 cannot move relative to the second ball-receiving groove 114. Thus, the first balls 160 can be prevented from moving relative to the second ball receiving grooves 114, which is beneficial to improving the stability of the first barrel 110 moving relative to the second barrel 130.
After the first balls 160 are disposed, when the first fixing portion 111 slides on the first slide rail 131, the first balls 160 can rotate in the first ball receiving grooves 139 and the second ball receiving grooves 114, so as to reduce friction when the first fixing portion 111 slides on the first slide rail 131, thereby prolonging the service life of the first fixing portion 111 and the first slide rail 131, and reducing the driving force required by the first piezoelectric motor 150 when driving the first lens barrel 110 to move, so as to further reduce the volume of the first piezoelectric motor 150, and further reduce the size of the zoom lens.
With continued reference to fig. 1-5, in some embodiments, the first piezoelectric motor 150 is a plurality in number; the number of the first piezoelectric motor accommodation grooves 136 is plural, the plural first piezoelectric motor accommodation grooves 136 are distributed around the optical axis at equal intervals, and at least one first piezoelectric motor 150 is fixed in each first piezoelectric motor accommodation groove 136.
Thus, the plurality of first piezoelectric motors 150 can be distributed along the direction around the optical axis, so that the stress of the first barrel 110 is more uniform when the first barrel 110 is driven to move relative to the second barrel 130.
In one embodiment, two first piezoelectric motors 150 are fixed in each first piezoelectric motor accommodation groove 136, and the two first piezoelectric motors 150 are respectively located at two ends of the first piezoelectric motor accommodation groove 136 in the direction around the optical axis.
In one example, the number of first piezoelectric motors 150 is 6; the number of the first piezo motor receiving grooves 136 is 3.
With continued reference to fig. 1 to 5, in some embodiments, the first image-side ring-shaped end plate 135 includes a fixing ring 101 surrounding the second lens 140 and fixedly connected to a peripheral edge of the second lens 140, a plate-shaped main body portion 102 surrounding the fixing ring 101 and connected to the image-side edge of the first cylindrical sidewall 133, and a connecting portion 103, the fixing ring 101 and the plate-shaped main body portion 102 are disposed opposite to each other in the radial direction of the second barrel 130 with a gap 104 left therebetween, and the connecting portion 103 is fixedly connected to the plate-shaped main body portion 102 and the fixing ring 101, respectively; an avoiding groove 115 is formed at an image side edge of the first barrel 110, the image side edge of the first barrel 110 is disposed in the first accommodating space 132 and extends into the gap 104, and the avoiding groove 115 accommodates at least part of the connecting portion 103.
Thus, when the zoom lens needs to be stored, the first barrel 110 is moved relative to the second barrel 130 by the first piezoelectric motor 150, and the distance between the first lens 120 and the second lens 140 is reduced, so that more parts of the first barrel 110 can be stored in the first storage space 132 until the image-side edge of the first barrel 110 extends into the space 104, thereby further increasing the overlapping portion of the first barrel 110 and the second barrel 140 in the optical axis direction, and further reducing the volume of the zoom lens.
With continued reference to fig. 1-5, in some embodiments, the zoom lens further comprises: the first dust-proof member 170, the first dust-proof member 170 is fixed to the inner hole edge of the first object-side annular end plate 134 and is disposed adjacent to the first barrel 110. Thus, dust can be prevented from entering the first accommodating space 132 from between the inner hole edge of the first object-side annular end plate 134 and the first lens barrel 110.
In addition, the first dust-proof part 170 is disposed adjacent to the first lens barrel 110 without contacting the first lens barrel 110, so that when the first lens barrel 110 moves relative to the second lens barrel 130, the first dust-proof part 170 is prevented from being separated from the second lens barrel 130 due to friction generated between the first lens barrel 110 and the first dust-proof part 170.
In an embodiment, the number of the first dust-proof members 170 is plural, and the plural first dust-proof members 170 are respectively disposed in each space provided between the inner hole edge of the first object-side annular end plate 134 and the first lens barrel 110.
In one embodiment, the first dust-proof member 170 is engaged with the engaging groove on the inner hole edge of the first object-side annular end plate 134, so that the first dust-proof member 170 is fixed to the inner hole edge of the first object-side annular end plate 134.
In another embodiment, the first dust-proof component 170 is fixed to the inner hole edge of the first object-side annular end plate 134 by glue adhesion, so that the first dust-proof component 170 is fixed to the inner hole edge of the first object-side annular end plate 134.
With continued reference to fig. 1-5, in some embodiments, the extending direction of the first sliding rail 131 is parallel to the optical axis of the first lens 120. Thus, when the first piezoelectric motor 150 drives the first fixing portion 150 to slide along the extending direction of the first slide rail 131, the first lens barrel 110 moves a longer distance relative to the second lens barrel 130, and the increased or decreased distance between the first lens 120 and the second lens 140 is larger.
In some other embodiments, the first slide rail 131 extends in a screw shape around the optical axis. In this way, when the first piezoelectric motor 150 drives the first fixing portion 111 to move along the extending direction of the first slide rail 131, the distance between the first lens 120 and the second lens 140 can also be increased or decreased.
With continuing reference to fig. 1-5 and with concurrent reference to fig. 6, in some embodiments, the zoom lens further comprises: a third barrel 180, a third lens 190, and a second piezoelectric motor 200; the third barrel 180 has a second slide rail 181; the third lens 190 is fixed in the third lens barrel 180, and the first lens 120, the second lens 140 and the third lens 190 are sequentially arranged on the optical axis of the first lens 120; the second barrel 130 further has a second fixing portion 105, the second fixing portion 105 is slidably disposed on the second slide rail 181; the second piezoelectric motor 200 is fixed to the second barrel 130 or the third barrel 180 and is used for driving the second fixing portion 105 to move along the second slide rail 181, so that the distance between the second lens 140 and the third lens 190 is increased or decreased.
Specifically, since the second fixing portion 105 is slidably disposed on the second slide rail 181, the second fixing portion 105 belongs to the second lens barrel 130, and the second slide rail 181 belongs to the third lens barrel 180, the second fixing portion 105 can slide along the extending direction of the second slide rail 181 relative to the third lens barrel 180.
The arrangement position of the second piezoelectric motor 200 is not limited, when the second piezoelectric motor 200 is fixed to the second barrel 130, the second piezoelectric motor 200 can be attached to the third barrel 180, and when the second piezoelectric motor 200 is driven, the second piezoelectric motor 200 slides along the extension direction of the second slide rail 181 relative to the third barrel 180 and drives the second barrel 130 to slide along the extension direction of the second slide rail 181; when the second piezoelectric motor 200 is fixed to the third barrel 180, the second piezoelectric motor 200 can be attached to the second barrel 130, and when the second piezoelectric motor 200 is driven, the second barrel 130 is driven by the second piezoelectric motor 200 to slide along the extending direction of the second slide rail 181.
In the present invention, when the zoom lens needs to be zoomed, the second piezoelectric motor 200 is driven, and the second piezoelectric motor 200 drives the second fixing portion 105 to move along the second slide rail 181, so that the distance between the second lens 140 and the third lens 190 is increased or decreased. Of course, while the spacing between the second mirror plate 140 and the third mirror plate 190 is increased or decreased by the second piezoelectric motor 200, the spacing between the first mirror plate 120 and the second mirror plate 140 may also be increased or decreased by the first piezoelectric motor 150.
More specifically, the optical axis of the first lens 120, the optical axis of the second lens 140, and the optical axis of the third lens 190 all coincide.
In some embodiments, the third barrel 180 includes a second cylindrical sidewall 183 enclosing a second accommodating space 182, a second object-side annular end plate 184 bending and extending from an object-side edge of the second cylindrical sidewall 183 toward the optical axis, and a second image-side annular end plate 185 bending and extending from an image-side edge of the second cylindrical sidewall 183 toward the optical axis, wherein the second object-side annular end plate 184 and the second image-side annular end plate 185 are disposed opposite to each other in the optical axis direction and form a second piezoelectric motor accommodating groove 186 located in the second accommodating space 182 therebetween; at least part of the second barrel 130 is placed into the second accommodating space 182 from the inner hole of the second object-side annular end plate 184; the third lens 190 is fixed in the inner hole of the second image-side annular end plate 135; the second piezo motor 200 is fixed in the second piezo motor receiving groove 186 and attached to the second barrel 180.
The second piezoelectric motor accommodation space 186 may be the entire area between the second object-side annular end plate 184 and the second image-side annular end plate 185 or may be a partial area between the second object-side annular end plate 184 and the second image-side annular end plate 185.
In these embodiments, the moving manner of the second piezoelectric motor 200 fixed in the third barrel 180 and driving the second barrel 130 to move is the same as the moving manner of the first piezoelectric motor 150 fixed in the second barrel 130 and driving the first barrel 110 to move, and is not repeated herein.
In addition, when the zoom lens needs to be stored, the second barrel 130 moves relative to the third barrel 180 through the second piezoelectric motor 200, and the distance between the second lens 140 and the third lens 190 is reduced, so that more parts of the second barrel 130 can be stored in the second storage space 182, the overlapping part of the second barrel 130 and the third barrel 180 in the optical axis direction is increased, and the volume of the zoom lens is further reduced.
In some embodiments, the second-side annular end plate 184 defines a second notch 187 extending from the inner hole edge thereof to the second cylindrical side wall 183 along a direction perpendicular to the optical axis, and the second notch 187 defines two notch edges on the second-side annular end plate 184 that are oppositely disposed in a direction around the optical axis; the third barrel 180 further includes two second guide plates 188 extending from the edge of the second notch 187 toward the second image-side annular end plate 185 in the optical axis direction and disposed opposite to each other in the direction around the optical axis, the two second guide plates 188 and the second cylindrical side wall 183 enclosing a second slide rail 181; the second fixing portion 105 of the second barrel 130 is fixed to the outer side surface of the first cylindrical sidewall 133, at least a portion of the first cylindrical sidewall 133 is disposed in the second accommodating space 182, and the second fixing portion 105 is embedded in the second slide rail 181.
Specifically, since the second notch 187 is located on the second object-side annular end plate 184, and the two second guide plates 188 and the second cylindrical side wall 183 together enclose the second slide rail 181, one end of the second slide rail 181 is disposed at the second notch 187 on the second object-side annular end plate 184, and the other end of the second slide rail 181 is located at one end of the second guide plate 188 away from the second object-side annular end plate 184.
In one embodiment, the second guide plate 188 extends from the edge of the second notch 187 to the second image-side annular end plate 185, and the other end of the second slide rail 181 is located on the second image-side annular end plate 185 and connected to the second guide plate 188.
In this way, after the second piezoelectric motor 200 is powered on, the second barrel 130 is driven to move, so that the second fixing portion 105 slides between the second slide rails 181 formed by the two second guide plates 188 and the second cylindrical side wall 183, and the second barrel 130 moves relative to the third barrel 180, thereby increasing or decreasing the distance between the second lens 140 and the third lens 190.
In some embodiments, the zoom lens further includes: a second ball 210; the second guide plate 188 is provided with a third ball receiving groove 189, the second fixing portion 105 is provided with a fourth ball receiving groove 106 opposite to the third ball receiving groove 189, a part of the second balls 210 are located in the third ball receiving groove 189, another part of the second balls 210 are located in the fourth ball receiving groove 105, and the second fixing portion 105 is slidably disposed on the second slide rail 181 via the second balls 210.
The matching manner of the second balls 210, the third ball-receiving grooves 189 and the fourth ball-receiving grooves 106 is the same as that of the first balls 160, the first ball-receiving grooves 139 and the second ball-receiving grooves 114 in the above description, and the details are not repeated herein.
The number relationship and the matching manner between the second piezoelectric motor 200 and the second piezoelectric motor receiving groove 186 are the same as those between the first piezoelectric motor 150 and the first piezoelectric motor receiving groove 136 in the above description, and are not repeated herein.
In some embodiments, the first slide rail 131 and the second fixing portion 105 are disposed in a staggered manner in a radial direction of the second barrel 130. Thus, the zoom lens can be prevented from shaking during zooming due to the accumulation of the production tolerance of the first slide rail 131 and the production tolerance of the second fixing part 105.
In some embodiments, the zoom lens further includes: and the second dust-proof piece 220, wherein the second dust-proof piece 220 is fixed on the inner hole edge of the second object-side annular end plate 184 and is arranged adjacent to the second lens barrel 130.
The second dust-proof member 220 is engaged with the second object-side annular end plate 184 in the same manner as the first dust-proof member 170 is engaged with the first object-side annular end plate 134 in the above description, and the details are not repeated herein.
In some embodiments, the extending direction of the second sliding rail 181 is parallel to the optical axis of the first lens 120. In this way, when the second piezoelectric motor 200 drives the second fixing portion 105 to slide along the extending direction of the second slide rail 181, the second barrel 130 moves a longer distance relative to the third barrel 180, so that the increased or decreased distance between the second lens 140 and the third lens 190 is larger. Of course, in other embodiments, the extending direction of the second slide rail 181 may also be threaded around the optical axis.
In some embodiments, the second barrel 130 further has a limiting portion 107 fixedly connected to the outer side surface of the first cylindrical sidewall 133 and disposed in the second piezo motor accommodating groove 186, and the limiting portion 107 is configured to limit the second barrel 130 to move in a direction away from the third lens 190 after the distance between the second lens 140 and the third lens 190 is increased. Thus, the second barrel 130 and the third barrel 180 can be prevented from being separated from each other.
Specifically, after the distance between the second lens 140 and the third lens 190 is increased by the driving of the second piezoelectric motor 200, the limiting portion 107 abuts against the second object-side annular end plate 184, so as to limit the second barrel 130 from moving in the direction away from the third lens 190.
In some embodiments, the first lens 120, the second lens 140, and the third lens 190 are each 8mm in diameter; the diameter of the zoom lens is 22.6 mm; when the zoom lens is stored, the length of the zoom lens in the axial direction of the optical axis is 5.5 mm; the distance between the first lens 120 and the second lens 140 can be increased by 3mm under the driving of the first piezoelectric motor 150; the spacing between the second mirror 140 and the third mirror 190 can be increased by 3.5mm under the driving of the second piezo motor 200.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (10)
1. A zoom lens, comprising:
a first lens barrel having a first fixing portion;
the first lens is fixed in the first lens barrel;
the second lens cone is provided with a first slide rail, wherein the first fixing part is arranged on the first slide rail in a sliding manner;
a second lens fixed in the second barrel, an optical axis of the second lens being configured to coincide with an optical axis of the first lens;
the first piezoelectric motor is fixed on the first lens barrel or the second lens barrel and used for driving the first fixing part to move along the first slide rail so as to increase or decrease the distance between the first lens and the second lens.
2. The zoom lens according to claim 1,
the second lens cone comprises a first cylindrical side wall, a first object side annular end plate and a first image side annular end plate, wherein the first cylindrical side wall is encircled to form a first containing space, the first object side annular end plate bends and extends from the object side edge of the first cylindrical side wall towards the optical axis, the first image side annular end plate bends and extends from the image side edge of the first cylindrical side wall towards the optical axis, and the first object side annular end plate and the first image side annular end plate are oppositely arranged in the optical axis direction and form a first piezoelectric motor containing groove which is positioned between the first object side annular end plate and the first image side annular end plate and is positioned in the first containing space;
at least part of the first lens barrel is arranged in the first accommodating space from an inner hole of the first object-side annular end plate;
the second lens is fixed in an inner hole of the first image side annular end plate;
the first piezoelectric motor is fixed in the first piezoelectric motor accommodating groove and is attached to the first lens barrel.
3. The zoom lens according to claim 2,
the first object side annular end plate is provided with a first notch extending from the edge of an inner hole of the first object side annular end plate to the first cylindrical side wall along the direction perpendicular to the optical axis, and the first notch is formed in the first object side annular end plate and comprises two notch edges oppositely arranged in the direction surrounding the optical axis;
the second lens cone is also provided with two first guide plates which extend from the edge of the first notch to the annular end plate on the first image side in the optical axis direction and are arranged oppositely in the direction surrounding the optical axis, and the two first guide plates and the first cylindrical side wall jointly enclose a first slide rail;
the first lens barrel is further provided with a cylindrical main body part which is enclosed to form a lens accommodating space, at least part of the cylindrical main body part is arranged in the first accommodating space, and the first fixing part is fixed on the cylindrical main body part and is embedded in the first sliding rail.
4. The zoom lens according to claim 3, further comprising: a first ball bearing; the first guide plate is provided with a first ball containing groove, the first fixing portion is provided with a second ball containing groove opposite to the first ball containing groove, one part of the first ball is located in the first ball containing groove, the other part of the first ball is located in the second ball containing groove, and the first fixing portion is arranged on the first slide rail through the first ball in a sliding mode.
5. The zoom lens according to claim 2,
the number of the first piezoelectric motors is multiple;
the number of the first piezoelectric motor accommodating grooves is multiple, the multiple first piezoelectric motor accommodating grooves surround the optical axis and are distributed at equal intervals, and at least one first piezoelectric motor is fixed in each first piezoelectric motor accommodating groove.
6. The zoom lens according to claim 2,
the first image side annular end plate comprises a fixing ring surrounding the second lens and fixedly connected with the periphery of the second lens, a plate-shaped main body surrounding the fixing ring and connected with the image side edge of the first cylindrical side wall, and a connecting part, wherein the fixing ring and the plate-shaped main body are oppositely arranged in the radial direction of the second lens cone with a gap, and the connecting part is fixedly connected with the plate-shaped main body and the fixing ring respectively;
an avoiding groove is formed in the edge of the image side of the first lens barrel, the edge of the image side of the first lens barrel is placed into the first accommodating space and extends into the gap, and at least part of the connecting portion is accommodated in the avoiding groove.
7. The zoom lens according to claim 2, further comprising: the first dustproof piece is fixed at the edge of an inner hole of the first object side annular end plate and is arranged close to the first lens barrel.
8. The zoom lens according to claim 1, wherein the first slide rail extends in a direction parallel to the optical axis of the first lens.
9. The zoom lens according to any one of claims 1 to 8, further comprising: a third lens barrel, a third lens and a second piezoelectric motor;
the third lens cone is provided with a second slide rail;
the third lens is fixed in the third lens barrel, and the first lens, the second lens and the third lens are sequentially arranged on the optical axis of the first lens;
the second lens cone is also provided with a second fixing part which is arranged on the second slide rail in a sliding way;
the second piezoelectric motor is fixed to the second lens barrel or the third lens barrel and used for driving the second fixing portion to move along the second slide rail, so that the distance between the second lens and the third lens is increased or decreased.
10. The zoom lens according to claim 9,
the third lens cone comprises a second cylindrical side wall, a second object side annular end plate and a second image side annular end plate, wherein a second accommodating space is formed by the second cylindrical side wall, the second object side annular end plate bends and extends from the object side edge of the second cylindrical side wall to the optical axis, the second image side annular end plate bends and extends from the image side edge of the second cylindrical side wall to the optical axis, and the second object side annular end plate and the second image side annular end plate are arranged oppositely in the optical axis direction and form a second piezoelectric motor accommodating groove which is located between the second cylindrical side wall and the second image side annular end plate and is located in the second accommodating space;
at least part of the second lens barrel is arranged in the second accommodating space from an inner hole of the second object side annular end plate;
the third lens is fixed in an inner hole of the second image side annular end plate;
the second piezoelectric motor is fixed in the second piezoelectric motor accommodating groove and is attached to the second lens barrel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210330964.7A CN114690366A (en) | 2022-03-30 | 2022-03-30 | Zoom lens |
| PCT/CN2022/086990 WO2023184592A1 (en) | 2022-03-30 | 2022-04-15 | Zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210330964.7A CN114690366A (en) | 2022-03-30 | 2022-03-30 | Zoom lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114690366A true CN114690366A (en) | 2022-07-01 |
Family
ID=82141851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210330964.7A Pending CN114690366A (en) | 2022-03-30 | 2022-03-30 | Zoom lens |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114690366A (en) |
| WO (1) | WO2023184592A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100843403B1 (en) * | 2006-12-19 | 2008-07-03 | 삼성전기주식회사 | Device for Lens Transfer |
| JP2013037085A (en) * | 2011-08-04 | 2013-02-21 | Tamron Co Ltd | Zoom lens |
| TWI449983B (en) * | 2011-08-18 | 2014-08-21 | Tdk Taiwan Corp | Piezoelectric driving module for lens |
| CN203299441U (en) * | 2013-04-02 | 2013-11-20 | 嘉兴中润光学科技有限公司 | Intelligent automatic zoom lens and image pick-up module thereof |
| CN203311142U (en) * | 2013-05-28 | 2013-11-27 | 海德星科技（厦门）有限公司 | Automatic focusing optical module driven by micro piezoelectric motor |
| CN209472670U (en) * | 2019-04-15 | 2019-10-08 | 深圳市飞斯贝尔科技有限公司 | A kind of autozoom camera |
| CN111580237A (en) * | 2020-05-20 | 2020-08-25 | Oppo广东移动通信有限公司 | Electronic device and control method thereof |
-
2022
- 2022-03-30 CN CN202210330964.7A patent/CN114690366A/en active Pending
- 2022-04-15 WO PCT/CN2022/086990 patent/WO2023184592A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023184592A1 (en) | 2023-10-05 |
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| PB01 | Publication | ||
| CB02 | Change of applicant information |
Address after: 530031 plant of powder injection workshop, No. 100 Gaoling Road, Nanning City, Guangxi Zhuang Autonomous Region Applicant after: AAC Optics (Nanning) Technologies Co.,Ltd. Address before: 530031 plant of powder injection workshop, No. 100 Gaoling Road, Nanning City, Guangxi Zhuang Autonomous Region Applicant before: Chengrui optics (Nanning) Co.,Ltd. |
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| CB02 | Change of applicant information |