CN2706779Y - Vari-focal lens module - Google Patents

Vari-focal lens module Download PDF

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CN2706779Y
CN2706779Y CN 200420044385 CN200420044385U CN2706779Y CN 2706779 Y CN2706779 Y CN 2706779Y CN 200420044385 CN200420044385 CN 200420044385 CN 200420044385 U CN200420044385 U CN 200420044385U CN 2706779 Y CN2706779 Y CN 2706779Y
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lens
zoom
lens module
zoom lens
piezoelectric
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CN 200420044385
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Chinese (zh)
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黄全德
黄文正
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鸿富锦精密工业(深圳)有限公司
鸿海精密工业股份有限公司
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Abstract

The utility model provides a varifocal lens module, which can be positioned in the cell phone and the digital camera with a function for taking a picture. The varifocal lens module comprises a first lens and a plurality of piezoelectric elements and a lens barrel. The first lens is positioned in the lens barrel, and the piezoelectric elements are respectively positioned at the circumference of the first lens. The electric field controls the piezoelectric elements to generate deformation, and under the combined action of the lens barrel, the tension or the tension can be generated. Thus the first lens is deformed to change the curvature radius of the first lens in order to change the focal length of the lens. The focal length changing method does not need to change the position of the lens to economize the increased telescopic space, which is favorable for the cell phone and the digital camera to realize the light and small degree.

Description

变焦透镜模组 The zoom lens module

【技术领域】本实用新型关于一种变焦透镜模组,尤指一种适用于具拍照功能的手机和数码相机的变焦透镜模组。 TECHNICAL FIELD The present invention relates to a zoom lens module, especially mobile phones and digital cameras zoom lens module suitable for having a camera function.

【背景技术】随着多媒体技术的发展,数码相机已被人们广泛应用,具有广大的市场需求,且近年来手机也快速向高性能、多功能化方向发展,数码相机与手机的结合已经成为发展移动多媒体技术的关键。 BACKGROUND With the development of multimedia technology, digital cameras have been widely used, has a large market demand, and in recent years, the rapid development of mobile phones to high-performance, multi-functional direction, combined with digital cameras and mobile phones have become the development the key mobile multimedia technology. 数码相机的变焦方式有两种,即光学变焦和数字变焦:光学变焦是通过镜片的组合改变焦距以达到变焦的目的;而数字变焦为将影像感测器所撷取的影像加以剪裁并通过插值算法还原成原图大小。 Two digital camera zoom mode, i.e., the optical and digital zoom: optical zoom focal length is changed by a combination of lenses to achieve the purpose of zooming; digital zoom and the image sensor to be tailored to the images captured by the interpolation and algorithm reduced to the original size.

相机镜头模组是具拍照功能的手机和数码相机的关键零组件,利用光学变焦的镜头模组为了进行对焦,需改变物镜组、光圈及目镜组之间的距离,故需一垂直的伸缩空间,其所占空间较大,增加了具拍照功能的手机或数码相机的厚度,不利于其朝轻小方向发展。 A camera module having a camera phones and digital cameras function key components using an optical zoom lens module in order to perform focusing, the need to change the distance between the objective lens group, an aperture, and the eyepiece, it takes a telescopic vertical space its footprint is larger, increasing the thickness of the phone or a digital camera with a camera function, detrimental to their development towards small and light direction. 目前消费者对相机成像品质要求越来越高,而利用数字变焦的镜头模组所得影像画质较差,不能适应市场要求。 Currently consumers are increasingly demanding high-quality imaging camera, and the use of poor digital zoom lens module resulting image quality can not meet the market requirements.

一种变焦透镜,如公开于2002年9月18日的中国专利第02102560.6号,其利用两组凸轮机构来移动透镜组从而达到变焦的目的。 A zoom lens, as disclosed on September 18, 2002 the China Patent No. 02102560.6, which uses two sets of cam mechanism to move the group to achieve the objective lens zoom. 其中,第一凸轮机构包括旋转圆筒、凸轮销、第一凸轮圆筒连接板,旋转圆筒的外表面设有圆周肋,第一凸轮圆筒上具有螺旋凸轮槽;第二凸轮机构包括第二凸轮圆筒,第二凸轮圆筒又包括两个螺旋槽道和两纵向槽道;凸轮机构用来实现将转动转变成平动,故旋转凸轮机构即可通过透镜组与凸轮圆筒上的螺旋凸轮槽的配合使透镜组沿光轴方向平移,从而实现变焦。 Wherein the first cam mechanism includes a rotating cylinder, a cam pin, a cylindrical web, the outer surface of the first cam rotating cylinder provided with a circumferential rib having a first spiral cam groove on the cam cylinder; second cam mechanism includes a first second cam barrel, and a second cylindrical cam track comprises two helical grooves and two longitudinal channels; a cam mechanism for realizing the translation into rotation, so that by rotation of the cam mechanism to the cylindrical lens group and the helical cam with the cam groove of the lens group in the optical axis direction translation, in order to achieve zoom. 这种利用凸轮机构来移动透镜组的变焦结构,由于需改变透镜组之间的距离,故透镜模组尺寸势必较大,且该凸轮机构结构较为复杂,各圆筒上的螺旋槽道加工较为困难,造成其制造成本较高,同时,机械移动也有不可靠、精度较差的缺点。 This use of a cam mechanism to move the zoom lens group of the structure, due to the need to change the distance between the lens groups, it is bound to the lens module size larger, and more complex structure of the cam mechanism, the spiral grooves on the cylindrical working channel more difficult, resulting in higher manufacturing cost, while there are no moving mechanical reliability, the disadvantage of poor precision.

现有变焦透镜,如美国专利申请第US20030227599号于2003年12月11日所公开的变焦透镜,其利用压电材料变形带动透镜移动来实现变焦。 Conventional zoom lens, a zoom lens as described in US Patent Application No. US20030227599 on 11 December 2003 as disclosed in which a piezoelectric material deforms to drive the zoom lens is moved is achieved. 该变焦透镜包括一可动套筒、一固定套筒、压电部分及一系列其他附属结构,元件较多,且其压电部分的结构与制程较复杂,增加了制造成本;该发明需通过改变透镜位置而变焦,故需一垂直伸缩空间,所占空间较大,增加了具拍照功能的手机和数码相机的尺寸,不利于其朝轻小方向发展。 The zoom lens includes a movable sleeve, a fixing sleeve, and a series of piezoelectric portion other accessory structures, more element, and the piezoelectric elements of the structure and process more complex, increasing manufacturing costs; required by this invention, changing the zoom lens position and therefore need a large vertical telescopic space, occupied space, increasing the size of mobile phones and digital cameras with a camera function, detrimental to their development towards small and light direction.

鉴于以上缺点,有必要提供一种整体尺寸较小、结构较为简单且成像效果较好的透镜模组。 In view of the above disadvantages, it is necessary to provide a unitary small size, simple structure and better imaging lens module.

【发明内容】本实用新型的目的在于提供一种数码相机变焦透镜模组,其可减小具拍照功能的手机或数码相机的尺寸,并能获得较好的图像效果。 SUMMARY OF THE INVENTION The present invention aims to provide a zoom camera lens module, which may be reduced with the size of a mobile phone or a digital camera photographing function, and to obtain better image quality.

一种数码相机变焦透镜模组,可置于移动电话内,其包括第一透镜、多个压电元件和一镜筒,该压电元件又包括第一电极、第二电极和压电材料。 One kind of zoom camera lens module, can be placed in a mobile phone, which includes a first lens, a lens barrel and a plurality of piezoelectric elements, the piezoelectric element further comprises a first electrode, a second electrode and a piezoelectric material. 该第一透镜为可变形透明透镜,由可塑性塑胶材料制成,压电元件置于该第一透镜的圆周上,其可为3个以上之任意数量,压电元件的压电材料部分在电场作用下通过压电效应而发生形变,同时在镜筒的共同作用下产生拉力或张力,使该第一透镜变形,改变其曲率半径,从而改变其焦距。 The first deformable lens is a clear lens, made of a thermoplastic plastic material, a piezoelectric element disposed on the circumference of the first lens, which may be any number of three or more, the piezoelectric material portion of the piezoelectric element in an electric field It occurs under the action of deformation by the piezoelectric effect, while a tensile force or tension under the action of the lens barrel, so that the first deformable lens to change its radius of curvature so as to change its focal length.

相较现有技术,本实用新型变焦透镜模组仅包括多个透镜、多个压电材料及一镜筒,结构简单,附属元件较少,制程也较简单,故生产成本较低;另外,本实用新型在变焦时通过透镜本身曲率半径的变化改变其焦距,因此无须改变物镜、光圈及像镜之间的距离,故可节省其伸缩空间,从而减小电子产品的体积;本实用新型透镜模组采用光学变焦,其图像效果较好。 Compared with the prior art, the present invention is a zoom lens module includes only a plurality of lenses, a barrel and a plurality of piezoelectric materials, simple structure, less accessory elements, is also relatively simple process, lower production costs; Further, when the present invention is a zoom lens itself is changed by the radius of curvature changes its focal length, it is not necessary to change, and the distance between the objective lens aperture mirror image, which can be saved scalable space, thereby reducing the volume of electronic products; lens according to the present invention module using an optical zoom, an image that is better.

【附图说明】图1是本发明实施例变焦透镜模组的结构示意图;图2是本发明实施例变焦透镜模组结构的II-II剖视图。 BRIEF DESCRIPTION FIG. 1 is a schematic structural diagram of a zoom lens module embodiment of the present invention; FIG. 2 is a module configuration of a zoom lens of Embodiment II-II cross-sectional view of the embodiment of the present invention.

【具体实施方式】 【Detailed ways】

请参阅图1和图2,本实用新型变焦透镜模组包括第一透镜1、四个压电元件2、透镜组和镜筒4。 Please refer to FIG. 1 and FIG. 2, the zoom lens module according to the present invention comprises a first lens 1, four piezoelectric element 2, the lens group 4 and the lens barrel. 该四个压电元件2均匀分布于第一透镜1的圆周上,位于镜筒与第一透镜之间。 The four piezoelectric element 2 evenly distributed on the circumference of the first lens 1, positioned between the first lens barrel. 透镜组3位于第一透镜1之后,且其主轴与第一透镜1的主轴重合。 A first lens group 3 is located after the lens 1, and the main spindle 1 of the first lens coincides. 第一透镜1和透镜组3置于镜筒4内,且与镜筒4内壁接触。 The first lens group 1 and the lens 3 placed in the tube 4, the inner wall 4 and in contact with the barrel. 第一透镜1为可变形弹性透镜,由可塑性塑料材料制成,其侧面形状可为凹凸透镜、平凸透镜、双凸透镜、凸凹透镜、平凹透镜和双凹透镜等之中的任一种,优选平凸透镜和平凹透镜。 The first lens 1 to be elastically deformable lens, made of a thermoplastic plastic material, which may be a side surface shape of the meniscus, either plano-convex lens, a lenticular lens, meniscus lens, plano-concave, and the like among biconcave lens, preferably a plano-convex plano-concave lens.

压电元件2包括第一电极21、压电材料22和第二电极23,在本实施例中,压电元件2为圆柱体,第一电极21、第二电极23分别置于压电材料22的两端,其可直接接可正负变换的直流电源,改变正负极或电源电压即可实现通过电场控制压电材料22变化,从而在压电材料22与镜筒4的共同作用下产生拉力或张力。 The piezoelectric element 2 includes a first electrode 21, a piezoelectric material 22 and the second electrode 23, in this embodiment, the piezoelectric element 2 is cylindrical, the first electrode 21, second electrode 23 of the piezoelectric material 22 are disposed both ends, it can be directly connected to the positive and negative DC power conversion can change the positive or negative voltage supply 22 can be realized by changing the electric field control of the piezoelectric material, resulting in the joint action of the piezoelectric material 22 and the barrel 4 pulling or tension. 压电材料22的材料可为任何具压电特性的材料,优选锆钛酸铅(PZT[Pb(Zr,Ti)O3])。 Material of the piezoelectric material 22 may be any material having piezoelectric properties, preferably lead zirconate titanate (PZT [Pb (Zr, Ti) O3]). 压电元件2是由压电材料22与第一电极21和第二电极23烧结为一体而成,压电元件2粘贴于该第一透镜1上,其也可在该第一透镜1成型时,直接镶入第一透镜1的圆周上,且压电元件2均匀分布于第一透镜1的圆周上。 The piezoelectric element 2 is composed of a piezoelectric material 22 and the first electrode 21 and second electrode 23 formed integrally sintered, the piezoelectric element 2 attached to the first lens 1, which may be at the time of molding of the first lens 1 , directly into the circumferential insert 1 of the first lens, the piezoelectric element 2 and distributed uniformly on the circumference of the first lens 1.

透镜组3为由多个透镜组合而成,其包括变形透镜及非变形透镜,其材料为玻璃或塑料。 Over three lens groups by a combination of lenses, and anamorphic lens comprising a non-deformed lens material is glass or plastic.

应用变焦透镜模组时,通过改变第一电极21、第二电极23上电源电压或变换其正负从而可通过电场控制压电材料22的形状变化,使压电元件2产生拉伸或压缩。 The zoom lens module application, by changing the first electrode 21, second electrode 23 on the power supply voltage or converting a change in shape so as to be positive and negative control 22 of piezoelectric material by an electric field, the piezoelectric element 2 a tensile or compressive. 该压电元件2产生的拉伸或压缩与镜筒4共同作用,使第一透镜产生形变,从而达到改变第一透镜1曲率半径由此改变整个透镜模组焦距的目的。 4 with barrel tension or compression of the piezoelectric element 2 interacts generated by the first lens deformed to achieve a change of the first radius of curvature of the entire object lens thereby changing the focal length of the lens module. 其中该第一透镜1的曲率半径变化原理如下:透镜成像公式,1/f=1/u+1/v。 Wherein the radius of curvature of the first lens 1 change principle is as follows: Equation imaging lens, 1 / f = 1 / u + 1 / v.

其中u为物距,v为像距。 Where u is the object distance, v is the image distance.

透镜焦距,f=(n-1)(1/r′-1/r″)。 Lens focal distance, f = (n-1) (1 / r'-1 / r ").

其中r′及r″为第一透镜两面的曲率半径,n为折射率,因折射率n对曲率半径不敏感,故可忽略其变化,故改变第一透镜1的曲率半径,即可实现第一透镜1焦距f的变化,由此进行调焦。 Wherein r 'and r "is the radius of curvature of both surfaces of the first lens, n is the refractive index, the refractive index n is not sensitive due to the curvature radius, so the variation can be neglected, so that changing the radius of curvature of the first lens 1, can be realized on 1 changes a focal length f of the lens, thereby performing focusing.

当第一透镜为平凸透镜为例说明其焦距变化原理如下:拉伸时,r″不变,r′变大,则焦距f变大。 When the first lens is a plano-convex lens as an example that the principle of change in the focal length as follows: tensile, r "constant, r 'becomes large, the focal length f becomes large.

放松时,r″不变,r′变小,则焦距f变小。 When relaxed, r "constant, r 'becomes small, the focal length f becomes small.

其中r′为平凸透镜凸面的曲率半径,r″为平凸透镜平面的曲率半径。 Wherein r 'is the radius of curvature of the convex surface of the planoconvex lens, r "is the radius of curvature of planoconvex lens plane.

可以理解,本实用新型变焦透镜模组中第一透镜1的数量可延伸为多个,即可根据需要增加第一透镜1的数量,从而实现数码相机的大范围变焦要求。 It will be appreciated, the number of the first lens 1 of the present invention, the zoom lens module may extend in a plurality of, to increase the number of the first lens 1 as necessary to achieve a wide range zoom digital cameras required. 此外,压电元件2的形状不限于圆柱体,其也可为其它形状如方形等,其数量也可不限于4个,其也可为其它任何3个以上之数目。 The piezoelectric element 2 is not limited to the cylinder shape, it may also be other shapes such as square and the like, the number may not be limited to four, it may also be any other number of three or more.

本实用新型变焦透镜模组可置于具拍照功能的手机和数码相机内。 The zoom lens of the present invention can be placed in the module with camera phones and digital cameras.

Claims (9)

1.一种变焦透镜模组,其包括第一透镜和一镜筒,该第一透镜置于镜筒内,其特征在于:该变焦透镜模组还包括多个压电元件,该第一透镜为变形透镜,该多个压电元件分别置于该第一透镜的圆周上,位于镜筒与第一透镜之间。 1. A zoom lens module including a first and a lens barrel, a first lens disposed within the barrel, wherein: the zoom lens module further comprises a plurality of piezoelectric elements, the first lens a lens deformation, the plurality of piezoelectric elements disposed on the circumference of the first lens, positioned between the first lens barrel.
2.如权利要求1所述的变焦透镜模组,其特征在于:该第一透镜为塑性弹性透镜。 The zoom lens module as claimed in claim 1, wherein: the first lens is a plastic lens elasticity.
3.如权利要求2所述的变焦透镜模组,其特征在于:该第一透镜的材料为塑胶材料。 The zoom lens module according to claim 2, wherein: the material of the first lens is made of plastic material.
4.如权利要求1所述的变焦透镜模组,其特征在于:该压电元件包括压电材料和置于压电材料两端的第一电极、第二电极。 A second electrode of the piezoelectric element includes a piezoelectric material and a first electrode disposed at both ends of a piezoelectric material: The zoom lens module as claimed in claim 1, characterized in that.
5.如权利要求4所述的变焦透镜模组,其特征在于:该压电材料的材料为锆钛酸铅(PZT[Pb(Zr,Ti)O3])。 5. The zoom lens module according to claim 4, wherein: a material of the piezoelectric material is lead zirconate titanate (PZT [Pb (Zr, Ti) O3]).
6.如权利要求4所述的变焦透镜模组,其特征在于:该第一电极、第二电极与直流电源连接。 The zoom lens module as claimed in claim 4, characterized in that: the first electrode, a second electrode connected to a DC power supply.
7.如权利要求1所述的变焦透镜模组,其特征在于:该压电元件为至少3个,且均匀分布于第一透镜的圆周上。 7. The zoom lens module according to claim 1, wherein: the piezoelectric element is at least 3, and uniformly distributed on the circumference of the first lens.
8.如权利要求1所述的变焦透镜模组,其特征在于:该变焦透镜模组进一步包括一透镜组,所述透镜组由多个透镜组成。 8. The zoom lens module according to claim 1, wherein: the zoom lens module further comprises a lens group, a lens group composed of a plurality of lenses.
9.如权利要求8所述的变焦透镜模组,其特征在于:该透镜组包括变形透镜和非变形透镜。 9. The zoom lens module according to claim 8, wherein: the anamorphic lens comprising a lens group and a non-deformed lens.
CN 200420044385 2004-03-30 2004-03-30 Vari-focal lens module CN2706779Y (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100489564C (en) 2005-10-13 2009-05-20 鸿富锦精密工业(深圳)有限公司;鸿海精密工业股份有限公司 Deformable optical lens and its manufacture method and manufacture apparatus
CN101517452B (en) 2006-09-21 2011-06-01 珀莱特公司 Polymer lens
US8045280B2 (en) 2006-10-11 2011-10-25 Polight As Compact adjustable lens
CN101587224B (en) 2008-05-21 2012-08-29 鸿富锦精密工业(深圳)有限公司 Lens module
US8310772B2 (en) 2008-07-11 2012-11-13 Polight As Method and arrangement for reducing thermal effects in compact adjustable optical lenses
US8390939B2 (en) 2007-02-12 2013-03-05 Polight As Flexible lens assembly with variable focal length
CN101661147B (en) 2008-08-29 2013-03-20 鸿富锦精密工业(深圳)有限公司 Lens die set and camera die set using same
CN104049340A (en) * 2014-06-03 2014-09-17 联想(北京)有限公司 Camera lens, electronic device and zooming method
WO2018112883A1 (en) * 2016-12-23 2018-06-28 深圳市柔宇科技有限公司 Optical lens, camera module and terminal

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100489564C (en) 2005-10-13 2009-05-20 鸿富锦精密工业(深圳)有限公司;鸿海精密工业股份有限公司 Deformable optical lens and its manufacture method and manufacture apparatus
CN101517452B (en) 2006-09-21 2011-06-01 珀莱特公司 Polymer lens
US8199410B2 (en) 2006-09-21 2012-06-12 Polight As Polymer lens
US8045280B2 (en) 2006-10-11 2011-10-25 Polight As Compact adjustable lens
US8390939B2 (en) 2007-02-12 2013-03-05 Polight As Flexible lens assembly with variable focal length
CN101587224B (en) 2008-05-21 2012-08-29 鸿富锦精密工业(深圳)有限公司 Lens module
US8310772B2 (en) 2008-07-11 2012-11-13 Polight As Method and arrangement for reducing thermal effects in compact adjustable optical lenses
CN101661147B (en) 2008-08-29 2013-03-20 鸿富锦精密工业(深圳)有限公司 Lens die set and camera die set using same
CN104049340A (en) * 2014-06-03 2014-09-17 联想(北京)有限公司 Camera lens, electronic device and zooming method
WO2018112883A1 (en) * 2016-12-23 2018-06-28 深圳市柔宇科技有限公司 Optical lens, camera module and terminal

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