WO2010034145A1 - Mechanically actuated hybrid diffractive-refractive variable-focus liquid lens - Google Patents

Mechanically actuated hybrid diffractive-refractive variable-focus liquid lens Download PDF

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Publication number
WO2010034145A1
WO2010034145A1 PCT/CN2008/002128 CN2008002128W WO2010034145A1 WO 2010034145 A1 WO2010034145 A1 WO 2010034145A1 CN 2008002128 W CN2008002128 W CN 2008002128W WO 2010034145 A1 WO2010034145 A1 WO 2010034145A1
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Prior art keywords
liquid
fiber
substrate
frame
transparent
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PCT/CN2008/002128
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French (fr)
Chinese (zh)
Inventor
张薇
田维坚
鲍赟
Original Assignee
中国科学院西安光学精密机械研究所
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Publication of WO2010034145A1 publication Critical patent/WO2010034145A1/en

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    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1876—Diffractive Fresnel lenses; Zone plates; Kinoforms
    • G02B5/189—Structurally combined with optical elements not having diffractive power
    • G02B5/1895—Structurally combined with optical elements not having diffractive power such optical elements having dioptric power

Definitions

  • the invention relates to a liquid variable-definition fiber, in particular to a ⁇ -driven type of folding and mixing old body fiber c
  • Liquid varifocal is a new type of optical component based on the principle of bionics in the world. It mainly has a variable tunable range based on the change of the curvature of the surface of the filled liquid using the change of the angle of the electrowetting flow #3 ⁇ 4. It has the characteristics of strong ability, smoothness, considerableity, easy processing and so on, and has a good application prospect.
  • a conventional conventional "driving type liquid 3 ⁇ 4" is mainly composed of a substrate 3 ⁇ 43 ⁇ 4 plate 111, a ⁇ true filling liquid 112, a transparent elastic film 113, a frame 114, a hollow body 116, and a piston 115.
  • One step! ⁇ Stepping the air pressure, ffi, etc. to drive the piston 115 to move, so that the filling liquid 112 in the hollow body 116 is only divided; the cloth changes, causing the radius of curvature R of the surface of the transparent elastic film 113 to change, thereby Destroy the driving fluid.;
  • the focal length/change of the body The focal length / variation meets the following:
  • ⁇ is the power of the liquid fiber
  • / is the focal length of the liquid fiber
  • n is 3 ⁇ 4 ⁇ body 116
  • the refractive index of the filling liquid 112 is judged by the curvature of the surface of the elastic film 113.
  • the liquid fiber has a 3 ⁇ 43 ⁇ 4 light aperture, and the AV is the amount of change caused by the movement of the piston 115.
  • the curvature R of the other transparent transparent film 113 must be constant, so that the light required is real.
  • the power is ⁇ , so the degree of freedom for image quality optimization in optical design is zero.
  • the object of the present invention is to solve the technical problem that the common liquid in the background art has no design freedom and cannot be imaged in a single piece of liquid m 3 ⁇ 4.
  • the design of the present invention is as follows:
  • a paste-type split-mixing zoom liquid comprising a cage frame 214, further comprising a substrate 211 and a transparent # «213, which are embedded in the annular groove 216 inside the S3 ⁇ 4 frame 214 and sealingly connected to the substrate frame 214.
  • the sealing chamber 217 formed by the « 211 and the transparent bomb ' « 213 of the household M is filled with a filling liquid 212, and the chamber sealing portion 217 of the household and the control piston 215 are in a secluded period «t: the «211 is The diffractive surface is 3 ⁇ 43 ⁇ 4.
  • the diffractive surface of the above legs can be finely ground and then plasticized.
  • the filling liquid 212 in the above-mentioned household M sealing chamber 217 is a transparent liquid which is incompatible with the transparent bomb «213 and does not undergo a chemical reaction.
  • the filling liquid 212 in the above-mentioned household M sealing chamber 217 can be used to extinguish oil and the like.
  • the present invention uses the planar base of the liquid as the diffractive optical surface, and does not increase the weight of the liquid 3 ⁇ 4 and the two pieces of the cake which do not affect the liquid structure and stability, and the design of the liquid fiber is 3 ⁇ 4E. According to different imaging and zooming requirements, different diffraction surface parameters can be reasonably designed, and the image quality optimization design can be earned according to the needs, and the imaging quality of a single liquid fiber can be improved.
  • the invention of the optical optical component is directly in the liquid «substrate, so that the liquid» can be designed in the miniature and dexterous zoom giant system, and has the image quality MF, # ⁇ , light, ⁇ wax simple and easy to control. .
  • the present invention makes it possible to have a smaller lazy optical system, so that a single-piece or two-piece diffractive liquid crystal fiber can achieve perfect imaging zooming.
  • Fig. 1 is a schematic view showing the structure of a conventional conventional "driving type liquid".
  • FIG. 2 is a schematic view showing the system structure of a folding-mixing mechanically driven liquid lens according to the present invention.
  • Fig. 3 is a schematic diagram showing the modulation function (MTF) curve of a conventional ordinary mechanically driven liquid in a short focal length.
  • FIG. 4 is a transfer function (MTF) of a hybrid mechanically driven liquid of the present invention under short focus 5 is a modulation curve (MTF) curve of a conventional general-purpose liquid type liquid at a long focal length.
  • FIG. 6 is a schematic diagram of a modulation transfer function (MF) curve of a divergent hybrid mechanically driven liquid 3tH at a long focal length according to the present invention. .
  • Figure 7 is a schematic diagram of the change in focal length of a conventional mechanically driven liquid» at different wavelengths.
  • Fig. 8 is a schematic view showing the change of the focal length of the mixed-distribution-driven liquid at different wavelengths according to the present invention.
  • the binary phase function is shaped such that the aberrations and numbers of the liquid lens are constructed as follows:
  • -Sv is the five aberrations and numbers that reflect the spherical aberration, coma, astigmatism, curvature of field and distortion.
  • a fourth-order aspheric coefficient A 2 appears in the surface astigmatism and the number.
  • This aspheric coefficient gives the liquid fiber system a design freedom Degree, so that a single liquid fiber achieves a fiber-like design.
  • the fourth-order aspherical coefficient can be used for spherical aberration correction of liquid fibers.
  • the achromaticity of the W1 driven liquid lens may be due to the negative dispersion characteristic of the diffractive surface.
  • the tree-emitting optical component of the present invention is directly on the liquid iiH substrate, that is, the tree-line optical surface is a main structural part of the liquid lens, and the method can be used for the liquid to be evacuated without changing the liquid invitation, size and stability.
  • the degree of freedom in the design of the difference correction, from the Li needs to optimize the design of the image quality, to improve the quality of liquid fiber imaging.
  • the present invention makes it possible to use a single or two-fold mixed liquid «to achieve a perfect imaging zoom system «. Different diffraction surface parameters can be reasonably designed according to different imaging and zooming requirements.
  • FIG. 2 is a schematic structural view of the system of the invention, in which the inner side of the frame 214 has an annular groove 216, and the periphery of the frame 214 is embedded in the ring groove 216 by the periphery of the bullet 213. And sealingly connected with the fiber frame 214.
  • Transparent bomb 'Jin 213 Optically transparent elastic film, required to be incompatible with the filling liquid 212 and no chemical reaction.
  • the sealing chamber 217 composed of the fiber 211 and the transparent bomb 'with 213 is filled with a filling liquid 212, a filling liquid 212-! a transparent liquid which is incompatible with the transparent elastic film 213 by water, oil or the like and does not undergo a chemical reaction.
  • Fiber 211 is a diffractive surface ship, and the diffractive surface is a diffractive optical element. Specifically, it can be used for brittle materials, such as optical plastics.
  • the diffractive surface fiber of the present invention can partially eliminate the spherical aberration of the mixed-mixed liquid-driven liquid fiber and the primary mixing and driving liquid ⁇ « obtain a more perfect image on the image surface.

Abstract

A mechanically actuated hybrid diffractive-refractive variable-focus liquid lens comprises a substrate frame (214), a substrate (211) and a transparent elastic film (213). A ring-shape concave groove (216) is provided on the inside of the substrate frame (214), the peripheries of the substrate (211) and the transparent elastic film (213) are embedded in the ring-shape concave groove (216), the substrate (211) and the transparent elastic film (213) are hermetically connected with the substrate frame (214). The substrate (211) and the transparent elastic film (213) form a sealed cavity (217), the sealed cavity (217) is filled with filling liquid (212). The sealed cavity (217) is connected to the cavity of a control piston (215). The substrate (211) has a diffraction surface.

Description

纖驱动型折衍混合变焦液体纖 领域  Fiber-driven folding-mixing zoom liquid fiber
本发明涉及一种液体可变焦纖， 具體及一种繊驱动型折衍混合变舊体 纖 c  The invention relates to a liquid variable-definition fiber, in particular to a 繊-driven type of folding and mixing old body fiber c
背景 Background
液体可变焦 在国际上是一种新型的依据仿生学原理提出的光学元件， 主要 有利用电润湿流 #¾ 角变化的可变 基于填充液体表面曲率变化的 纖， 它们具有宽的可调谐范围、 能力强、变 平滑、颇随、加工容易等 特点， 具有很好的应用前景。  Liquid varifocal is a new type of optical component based on the principle of bionics in the world. It mainly has a variable tunable range based on the change of the curvature of the surface of the filled liquid using the change of the angle of the electrowetting flow #3⁄4. It has the characteristics of strong ability, smoothness, considerableity, easy processing and so on, and has a good application prospect.
普通液体通， 无论是利用电润湿流 ^角变化的可 于填充 液体表面曲率变化的可变焦 ¾， 根据像差方程， 所需的光焦度一旦确定， m 表面曲率或两种互不相溶液体间界面曲率就 确定。 因此， 需光焦度确定的 情况下， 一个剃虫的液体戀鉢身并不具备校正像差的自由度， 这使得纖械像 过程中不能清晰成像。液体 MS用于变焦系统的设计时， 由于液体透 身不能 校正像差， 如果要求系统清晰成像， ^ , 镜片数目增多， 不利于变噍系 统的微型化、灵巧化。  Ordinary liquid pass, whether it is a zoomable 3⁄4 that can change the curvature of the surface of the filled liquid by using the change of the electrowetting flow angle. According to the aberration equation, once the required power is determined, the m surface curvature or the two surfaces are not in phase. The curvature of the interface between the solutions is determined. Therefore, in the case where the power is determined, the liquid love body of a shaving insect does not have the degree of freedom of correcting aberrations, which makes it impossible to clearly image the mechanical image. When the liquid MS is used in the design of the zoom system, since the liquid can not correct the aberration, if the system is required to be clearly imaged, ^, the number of lenses increases, which is not conducive to the miniaturization and dexterity of the system.
参见如图 1，现有普通«驱动型液体 ¾，主要由基底 ¾¾板111、 ±真充液体 112、透明弹性薄膜 113、框架 114、空腔体 116以及活塞 115构成。其一! ^步 进电滅气压、 ffi等驱动活塞 115运动， 使空腔体 116内的填充液体 112 #|只分； 布发生变化， 引起透明弹性薄膜 113表面的曲率半径 R变化， 从而使枳滅驱动型液.; 体職的焦距 /变化。焦距 /的变化满足下列方麵：  Referring to Fig. 1, a conventional conventional "driving type liquid 3⁄4" is mainly composed of a substrate 3⁄43⁄4 plate 111, a ± true filling liquid 112, a transparent elastic film 113, a frame 114, a hollow body 116, and a piston 115. One step! ^Stepping the air pressure, ffi, etc. to drive the piston 115 to move, so that the filling liquid 112 in the hollow body 116 is only divided; the cloth changes, causing the radius of curvature R of the surface of the transparent elastic film 113 to change, thereby Destroy the driving fluid.; The focal length/change of the body. The focal length / variation meets the following:
Λ 1 η - \ Λ 1 η - \
Φ =— = ；  Φ =— = ;
f、 R  f, R
△ π( - ?2 -r0 2 )2 [2R + ^R2 - r0 2 ]； 其中， Φ是液体纖的光焦度， /是液体纖的焦巨， n是¾ ^体 116内填充液体 112的折射率， R ^ig明弹性薄膜 113表面的曲率判 r。是液体纖有¾¾光口径 的 ， AV是活塞 115运动引起術只的变化量。对应于一定的光焦度 Φ, 由于机 械驱动型液体t竟的一^ ¾面基底 板 111是平面，另一^ ¾面透明弹性薄膜 113 的曲率 R必须一定，这样才能实¾»需的光焦度 Φ， 因此在光学设计中用于像 质优化的自由度为零。 △ π( - ? 2 -r 0 2 ) 2 [2R + ^R 2 - r 0 2 ]; where Φ is the power of the liquid fiber, / is the focal length of the liquid fiber, and n is 3⁄4 ^ body 116 The refractive index of the filling liquid 112 is judged by the curvature of the surface of the elastic film 113. The liquid fiber has a 3⁄43⁄4 light aperture, and the AV is the amount of change caused by the movement of the piston 115. Corresponding to a certain power Φ, since the mechanically driven liquid t is a flat surface, the curvature R of the other transparent transparent film 113 must be constant, so that the light required is real. The power is Φ, so the degree of freedom for image quality optimization in optical design is zero.
近年，对于難元件的研究多集中在成像原理艇以 ¾Μ结构及稳定性方面， 对于邀铖像质量的提高与完善尚未见研究报导。  In recent years, research on difficult components has focused on the structure and stability of the imaging principle. The improvement and improvement of the quality of the image has not been reported.
目前， Philip公司、三星公司、朗 if^碰有限公司等对液体纖的设计研究技 术进展较快， 一麵究机构如福罗里达中心大学等对棚麵的液体纖也开展 了研究， 主要包括液体纖的结构形式、 ±真充液体、控制方式等。但是， 作为单个 确 认 本 可变焦元件， 如何 ¾IE液体纖的像差、提高 »^像质量、使嫌霞与脾l 小的情况下获得 ί¾ 成像质量方面的技术研究迄今未见有报导。 国内的上海 ai大 学、清华大学等近年来也开展了液体纖方面的研究， 但大多都是针赚体纖的 成像机職制作工艺方面的研究， 也未见关于提高单个液体纖成像质量的报导。 发明内容 At present, Philip, Samsung, Longif^ Touch Co., Ltd. have made rapid progress in the design and research of liquid fiber, and research institutes such as the University of Florida Center have also studied the liquid fiber on the shed. Including the structural form of liquid fiber, ± true liquid, control method, etc. However, as a single confirmation The varifocal components, technical studies on the aberrations of the 3⁄4 IE liquid fiber, the improvement of the image quality, and the acquisition of ί3⁄4 imaging quality in the case of the spleen and the spleen have not been reported so far. In recent years, Shanghai Ai University and Tsinghua University have also carried out research on liquid fiber, but most of them are researches on the production process of imaging machine for needle-making, and there is no report on improving the quality of single liquid fiber imaging. . Summary of the invention
本发明的目的在于衛共一种 «¾¾动型折衍混合变 液体 ， 其解决了背景 技术中普通液体 没有设计自由度， 无法在单片液体 m ¾行像^；化的技术 问题。  The object of the present invention is to solve the technical problem that the common liquid in the background art has no design freedom and cannot be imaged in a single piece of liquid m 3⁄4.
本发明的设计方案如下：  The design of the present invention is as follows:
一种糊区动型折衍混合变焦液体職， 包括籠框架 214， 还包括周边嵌于 S¾框架 214内侧的环状凹槽 216内、与基板框架 214密封连接的基板 211及透明 #« 213, 戶 M的 « 211与透明弹 '« 213构成的密封腔体 217内填充有填充 液 212， 戶满的密封腔体 217与控制活塞 215的腔僻目 期 «t处在于： 所 述的 « 211为衍射面 ¾¾。  A paste-type split-mixing zoom liquid, comprising a cage frame 214, further comprising a substrate 211 and a transparent #«213, which are embedded in the annular groove 216 inside the S3⁄4 frame 214 and sealingly connected to the substrate frame 214. The sealing chamber 217 formed by the « 211 and the transparent bomb '« 213 of the household M is filled with a filling liquid 212, and the chamber sealing portion 217 of the household and the control piston 215 are in a secluded period «t: the «211 is The diffractive surface is 3⁄43⁄4.
以上腿的衍射面纖基底可細麵才料纖 学塑料観等。  The diffractive surface of the above legs can be finely ground and then plasticized.
以上戶 M密封腔体 217内的填充液 212是与透明弹«213互不相溶且不发生 化学反应的透明液体。  The filling liquid 212 in the above-mentioned household M sealing chamber 217 is a transparent liquid which is incompatible with the transparent bomb «213 and does not undergo a chemical reaction.
以上戶 M密封腔体 217内的填充液 212可¾^滅油等。  The filling liquid 212 in the above-mentioned household M sealing chamber 217 can be used to extinguish oil and the like.
本发明具有如下优点：  The invention has the following advantages:
1.增加了液体 «的设计自由度， 使得单片液体職可实现消 球差。 1. Increased the design freedom of the liquid « so that the single liquid job can achieve the aspherical difference.
2.本发明以液体 的平面基 接作为衍射光学面， 在不增加液体 ¾的重 量与俩只、 不影响液体職结构及稳定性的餅下为液体纖撤像差 ¾E的设计' 自由度， 根据不同的成像及变焦要求， 可以合理设计不同的衍射面参数， 根据需要 赚体戀細亍像质优化设计， 提高单个液体纖的成像质量。 2. The present invention uses the planar base of the liquid as the diffractive optical surface, and does not increase the weight of the liquid 3⁄4 and the two pieces of the cake which do not affect the liquid structure and stability, and the design of the liquid fiber is 3⁄4E. According to different imaging and zooming requirements, different diffraction surface parameters can be reasonably designed, and the image quality optimization design can be earned according to the needs, and the imaging quality of a single liquid fiber can be improved.
3.本发明榭行射光学元件直^ ¾于液体 «基底， 使液体 »可以 于微 型、灵巧化变焦巨系统设计中， 具有成像质 MF、 # 小、 轻、 Φ腊简单、 易 于控制的特点。  3. The invention of the optical optical component is directly in the liquid «substrate, so that the liquid» can be designed in the miniature and dexterous zoom giant system, and has the image quality MF, #小, light, Φ wax simple and easy to control. .
4. 本发明可使变 ^光学系统具有更小的懒只与 , 使得单^ —片或 两片折衍混合式液体纖实现完善成像的变焦系滅为可能。  4. The present invention makes it possible to have a smaller lazy optical system, so that a single-piece or two-piece diffractive liquid crystal fiber can achieve perfect imaging zooming.
5.可¾/^泛地扩展到各种对成像质量碰高要求， 同时: ¾(ί系 寸有严鞭 求的系统中， 可确保系统的微型化。  5. It can be extended to various requirements for imaging quality, and at the same time: 3⁄4 (systems with strict requirements can ensure the miniaturization of the system.
附图说明 DRAWINGS
图 1为现有普通«驱动型液体 it竟的结构示意图。  Fig. 1 is a schematic view showing the structure of a conventional conventional "driving type liquid".
图 2为本发明折衍混合机械驱动型液体透镜的系统结构示意图。  2 is a schematic view showing the system structure of a folding-mixing mechanically driven liquid lens according to the present invention.
图 3为现有普通机械驱动型液体邀竟在短焦距下的调制 函数 (MTF)曲线示 意图。  Fig. 3 is a schematic diagram showing the modulation function (MTF) curve of a conventional ordinary mechanically driven liquid in a short focal length.
图 4为本发明折衍混合机械驱动型液体 在短焦 下的调 专递函数 (MTF) 图 5为现有普通 区动型液体 ίϋΙ在长焦距下的调制 ¾函数 (MTF)曲线示 图 6为本发明折衍混合机械驱动型液体 3tH在长焦距下的调制传递函数 (M F) 曲线示意图。 Figure 4 is a transfer function (MTF) of a hybrid mechanically driven liquid of the present invention under short focus 5 is a modulation curve (MTF) curve of a conventional general-purpose liquid type liquid at a long focal length. FIG. 6 is a schematic diagram of a modulation transfer function (MF) curve of a divergent hybrid mechanically driven liquid 3tH at a long focal length according to the present invention. .
图 7为普通机械驱动型液体»在不同波长下焦距变化的示意图。  Figure 7 is a schematic diagram of the change in focal length of a conventional mechanically driven liquid» at different wavelengths.
图 8为本发明折衍混合积滅驱动型液体 在不同波长下焦距变化的示意图。 附图图面说明： 111-基底玻璃板， 112-填充液体， 113-透明弹 '性薄膜， 114-框 架， 115-活塞； 116-空腔体； 211-¾¾, 212- ±真充液， 213-透明弹 '圏， 214- 纖框架， 215-控制活塞， 216-凹槽， 217-密封腔体。 本发明将现有普通液体∞中的普通平面 ¾ ^基底设计为衍射光学元件即衍射 面籠， 衍射光学元件加入了衍射光学面， 引入了二元面的相位函数： (Γ) =—(Αιγ 2+Α2γ4 +...) Fig. 8 is a schematic view showing the change of the focal length of the mixed-distribution-driven liquid at different wavelengths according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS: 111-base glass plate, 112-filled liquid, 113-clear elastic film, 114-frame, 115-piston; 116-cavity; 211-3⁄43⁄4, 212-± true filling, 213-transparent bomb '圏, 214-fiber frame, 215-control piston, 216-groove, 217-sealed cavity. The invention designs a common planar 3⁄4^ substrate in the conventional liquid helium as a diffractive optical element, that is, a diffractive surface cage, and the diffractive optical element incorporates a diffractive optical surface, introducing a phase function of the binary surface: (Γ) =—(Α Igγ 2 +Α 2 γ 4 +...)
二元相位函数的弓 I入， 使液体透镜的赛得像差和数的构 为如下形式：  The binary phase function is shaped such that the aberrations and numbers of the liquid lens are constructed as follows:
SJJSJJ
Sm = Η 2{φ + φ,) = Η 2φ S m = Η 2 {φ + φ,) = Η 2 φ
Siy =H ^-) S iy =H ^-)
η Sy=0 其中， -Sv 竟的五个像差和数， 分别反映球差、 彗差、像散、场曲和畸变 的大小。 是填充麵构 I^Wf承担的光焦度； 是衍射光学面所承担的光 焦度； ^¾ ^光线与纖交点到光轴的距离； "是填充液的折射率； H是拉氏不变 量； G、 分别是填充、藤构 和衍射面的共縣数， 由戯^ 1填充液 所构^ tit皿或衍射面时入射和出射的孔径角决定； m为对应的衍射级次 另橢明通常 m=l); λ为对应波长； Α是二元面相位函数中的四次项系数， 即四阶非 球面系数。 ^ η S y =0 where -Sv is the five aberrations and numbers that reflect the spherical aberration, coma, astigmatism, curvature of field and distortion. Is the power of the filling surface structure I^Wf; is the power of the diffractive optical surface; ^3⁄4 ^ the distance between the light and the fiber intersection to the optical axis; "is the refractive index of the filling liquid; H is the Lagrangian The variable; G, respectively, is the total number of counts of the filling, the rattan structure and the diffractive surface, which is determined by the aperture angle of the incident and the exit when the filling liquid or the diffractive surface is constructed; the m is the corresponding diffraction order and the other ellipse Ming is usually m=l); λ is the corresponding wavelength; Α is the fourth-order coefficient in the binary surface phase function, that is, the fourth-order aspheric coefficient.
在繊驱动型液体纖系统中加入衍射光学面的设计后， 麵寻像差和数中出 现了一个四阶非球面系数 A2。该非球面系数使液体纖系统具有了一个设计自由 度， 从而使单个液体纖 实现像纖化设计。 四阶非球面系数可用于液体纖 的球差校正。 同时由于衍射面的负色散特性还可能实 W1 驱动型液体透镜的消色 差。 After the design of the diffractive optical surface is added to the 繊-driven liquid fiber system, a fourth-order aspheric coefficient A 2 appears in the surface astigmatism and the number. This aspheric coefficient gives the liquid fiber system a design freedom Degree, so that a single liquid fiber achieves a fiber-like design. The fourth-order aspherical coefficient can be used for spherical aberration correction of liquid fibers. At the same time, the achromaticity of the W1 driven liquid lens may be due to the negative dispersion characteristic of the diffractive surface.
本发明樹 射光学元件直 ¾ ^于液体 iiH基底， 即樹行射光学面作为液体透 镜的一个主要结构 部分， 该方法可以在不改变液体邀 、尺寸、稳定性条 件下为液体邀竟撤像差校正的设计自由度， 从丽根据需要赚体 行像质 优化设计， 提高液体纖成像质量。本发明使得单 一片或两片折衍混合式液 体«实现完善成像的变焦系«为可能。根据不同的成像及变焦要求， 可以合理 设计不同的衍射面参数。  The tree-emitting optical component of the present invention is directly on the liquid iiH substrate, that is, the tree-line optical surface is a main structural part of the liquid lens, and the method can be used for the liquid to be evacuated without changing the liquid invitation, size and stability. The degree of freedom in the design of the difference correction, from the Li needs to optimize the design of the image quality, to improve the quality of liquid fiber imaging. The present invention makes it possible to use a single or two-fold mixed liquid «to achieve a perfect imaging zoom system«. Different diffraction surface parameters can be reasonably designed according to different imaging and zooming requirements.
图 2具体为本发明 折衍混合樹颜动型液体纖的系统结构示意图， « 框架 214内侧具有一环状凹槽 216， « 211以^ t明弹 ' 213的周边嵌于环 凹槽 216内、 并与纖框架 214密封连接。透明弹 '謹 213 光学透明的弹性薄 膜， 要求与填充液 212互不相溶且不发生化学反应。纖 211与透明弹'隨 213构 成的密封腔体 217内填充有填充液 212， 填充液 212—! 用水、 油等与透明弹性 膜 213互不相溶且不发生化学反应的透明液体。密封腔体 217与控制活塞 215的腔 側舰。纖 211为衍射面舰， 衍射面繊为衍射光学元件， 具体可細贿 材料 ¾ ^^它光對才料繊， 如： 光学塑料等。本发明的衍射面纖可以部分消 除折衍混合繊驱动型液体纖的球差与初级 使攝衍混合 驱动型液体■ «在像面上获得更加完善的图像。  2 is a schematic structural view of the system of the invention, in which the inner side of the frame 214 has an annular groove 216, and the periphery of the frame 214 is embedded in the ring groove 216 by the periphery of the bullet 213. And sealingly connected with the fiber frame 214. Transparent bomb 'Jin 213 Optically transparent elastic film, required to be incompatible with the filling liquid 212 and no chemical reaction. The sealing chamber 217 composed of the fiber 211 and the transparent bomb 'with 213 is filled with a filling liquid 212, a filling liquid 212-! a transparent liquid which is incompatible with the transparent elastic film 213 by water, oil or the like and does not undergo a chemical reaction. The chamber 217 is sealed to the side of the control piston 215. Fiber 211 is a diffractive surface ship, and the diffractive surface is a diffractive optical element. Specifically, it can be used for brittle materials, such as optical plastics. The diffractive surface fiber of the present invention can partially eliminate the spherical aberration of the mixed-mixed liquid-driven liquid fiber and the primary mixing and driving liquid ■ « obtain a more perfect image on the image surface.
本发明折衍混合液体 的焦距变化与普通液体^竟焦距变^!程中调 ¾ 函数 (MTF)的对比参见图 3、 4、 5、 6。可见加入衍射面后， 系统在不同焦距下的调: 制传递函数 (MTF)都明显提高， 成像质量被优化。  See Figure 3, 4, 5, and 6 for a comparison of the focal length variation of the folded-mixed liquid of the present invention with the normalized liquid-to-focus (MTF). It can be seen that after the addition of the diffractive surface, the system's modulation at different focal lengths: the transfer function (MTF) is significantly improved, and the imaging quality is optimized.
本发明折衍混合液体 ¾的焦巨变化与普通液体 igf竟焦距变 l程中 的对 比参见图 7、 8。可见加入衍射面后， 系统焦距变化曲线 条波长下重合 ¾¾f， 系 统&¾明显 氐。  The comparison between the focal change of the mixed liquid 3⁄4 of the present invention and the ordinary liquid igf focal length change is shown in Figs. It can be seen that after adding the diffractive surface, the system focal length change curve coincides with the wavelength of 3⁄43⁄4f, and the system &3⁄4 is obviously 氐.

Claims

权利要求书 Claim
1.一种繊驱动型折衍混合变焦液体纖，包括繊框架 (214)，还包括周边嵌于基 板框架 (214)内侧的环 凹槽 (216)内、与«框架 (214)密封连接的 «(211)應明弹 «(213)， 腿的纖 (211)与透明弹'隨 (213)构成的密封腔体 (217)内±銃有 ±銃液 (212) ,纖的密封腔体 (217)与控制活塞 (215)的腔側 «;辦征在于：戶 的繊 (211)为衍射面纖。 What is claimed is: 1. A cymbal driven type of variegated hybrid zoom liquid fiber comprising a cymbal frame (214), further comprising a ring groove (216) peripherally embedded in the inner side of the substrate frame (214), sealingly connected to the frame (214) «(211) should be the bullet «(213), the leg of the fiber (211) and the transparent bomb 'with the (213) formed in the sealed cavity (217) ± 铳 铳 ( (212), the sealed cavity of the fiber (217) and the cavity side of the control piston (215) ; the sign is: the household 繊 (211) is the diffractive surface fiber.
2.根据权利要求 1腿的 驱动型折衍混合^ ^体職， 難征在于: 纖的 衍射面麵基底为麵才料纖¾：学塑料纖。  2. The driving type of the leg according to claim 1 is difficult to lie in: The diffraction surface of the fiber is the surface material 3⁄4: plastic fiber.
3.根据权利要求 1或 2繊的 me动型折衍混合变焦液体纖， 欺寺征在于： 所 述密封腔体 (217)内的填充液 (212)是与透明弹 ' (213)互不相溶且不发生化学反应的 透明液体。  The me moving type divergent zoom liquid crystal according to claim 1 or 2, wherein the filling liquid (212) in the sealed cavity (217) is not in contact with the transparent bomb '(213) A clear liquid that is compatible and does not undergo a chemical reaction.
4.根据权利要求 3腿的机籠动型折衍混合变讎体纖， 難征在于： 腿密 封腔体 (217)内的填充液 (212)为 油。  4. The cage-type split-type mixing and smashing body of the leg according to claim 3, wherein the filling liquid (212) in the leg seal chamber (217) is oil.
PCT/CN2008/002128 2008-09-26 2008-12-30 Mechanically actuated hybrid diffractive-refractive variable-focus liquid lens WO2010034145A1 (en)

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