1323349 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種光學系統中之透鏡，並且係特別關於一種 可調整焦距之透鏡。 【先前技術】1323349 IX. Description of the Invention: [Technical Field] The present invention relates to a lens in an optical system, and more particularly to a lens capable of adjusting a focal length. [Prior Art]
一般而言，可變焦的光學系統之鏡頭大致區分為機械式變焦 和電子式變焦兩種。機械式變焦的鏡頭係利用鏡頭本身前後伸縮 的變化來達成變焦的目的。由於對愈來愈輕薄短小的數位相機或 具拍照功能的手機來說，機械式變焦的鏡頭太厚、體積太大，許 多輕薄型相機係採用電子式變焦的鏡頭。 、 ° 、在習知技藝中，電子式變焦技術係以液珠(dropiet)為鏡片， 並利用電濕效應(electrowetting)控制液珠的形狀和曲率，藉此改變 液珠的焦距(focal length)，該液珠必須為可導電的水或^ ，第US 6,545,815號專利的内容即為一相關範例，其中所之 =裝置係將-透明導電之液珠置於—潤滑層和絕緣層上 、、、邑緣層下方有複數健繼極和—液珠電極 〗 = 並提供電壓給該液珠。利用調整 接觸角度，進而改變嫌珠的雜和焦^=之_介面特性和 之外 外 ，- 的問題 【發明内容】 透鏡問題’本發明提供—種可調焦距之透鏡及應用該 被極化口=-透鏡。該透鏡包含-可 置該液體微滴並且包含一組笫 。該底板係用以放 置方式使該組第—電極可被選摆二第—電極之一第一配 體微滴與各個該第-電極^間^^„bias)，藉此在該液 該液體微滴與各個該第—電弋電位’透過改變在 平行於該第—表面之 電位，該液體微滴與 透鏡之焦距為可調整的之間的一角度係為可調整的，亦即該 統包含f31# ϋ圭具體實施例為-光學系統。該光學系 傳送器和接接=(二叫’和-透鏡。該 被極化的液體微滴和」包含L第。該透鏡包含-可 罢姑3第一表面的底板。該底板係用以放 電極之一第一配 藉此在該液體微 體微滴與各個該[rj二U心第2位兮透過改變在該液 之隹、距為可憐缝係為可罐的，亦即該透鏡 之”、、巨為了縦的。猎此，該光學纽即可提供魏的功能。 點與精射叫由以下㈣卿述及所附 被極化的液體微: 一…- 置=2⑤組第-電極。該組第-電極之-第-配 滴與各個該第-電極之輯塵’藉此在該液體微 圖式得 到進一步的瞭解 1323349 【實施方式】 透鏡主要目的在於提供—種可調焦距之透鏡及應用該 ，材質都會有-定的介電特性，也就是在外加下， 加2的方向來排列。進一步而言，如果外加電 =的:粒在不均勻“加電場7:生度的τ dtim彳ί的㈣微滴中會包含許多電偶極制 該液體微滴相互接觸，因此可避免先前技藝中的諸多=Γ。需要和 透鏡:#f(A)為根據本發明之第一較佳具體實施例之 ί鏡：二:5=以⑽，和-底板 m ·刀〜衣不禾又電％影響則和受電場影響後的 ^體域二t板24係用以放置該液體微滴並且包 藉此在該㈣可觀雜地杨㈣的偏磨’ 焦距可透舰歧斩雕的，'脚該透鏡之 所亍為:增ίίί，調變的效果’上述之底板24可如圖二⑻ 所不進-步包含一濁滑層26。潤滑層26係放置於該液體^滴） 1323349 iVii 電之間並且可以為包含鐵氟龍(Teflon)的一斥液體 二二 麵26的作㈣祕^ 來。二。圖三((:)係緣示圖二⑷之透鏡的另一種變 ‘第:進一步包含一頂板(upperpIate)27。頂板27包含一 28紐第二電極28之配置方式亦使馳第二電極 倾’藉此在該賴與各麵第二電極 Ύ械—第二電位。同時使用該組第二電極28和該組 第一電極25囉可達成改變該液蠢滴之形狀的效果。 請=圖三。圖三為根據本發明之第二較佳具體實施例之透 f的L。透鏡3G包含—液體微滴(32A、32B)、-底板34和 旦線32A和32B分別表示未受電場影響前和受電場 二滴之形狀。第二較佳具體實施例與第—較佳具體 i 差別在於透鏡3G中的底板34僅供放置該液體微 ^產生電場、改舰距的功能係由頂板37巾的複數個電極38 貝貝。 ^參_四。圖四鱗示制根據本發明之透鏡的光學系統 =圖。光學系統4〇包含—傳送器42、—接收$ Μ，和一透 =46。傳送器42和接收器44係分別用以提供和接收一光學信 透鏡4β則疋居中將該光學信號由傳送器42引導至接收器 。透鏡46包含一可被極化的液體微滴46Α和一底板46β。^ 氐々46Β係用以放置該液體微滴46八並且包含一組第一電極。該 =二電極之配置方式使該㈣—電極可被選擇性地施加偏壓， 精此在該液體微滴46Α與各個該第一電極之間分別形成一第一電 =，透過改變在該液體微滴46Α與各個該第一電極間之該等第一 該液體微滴46Α與平行於該第一表面之一平面之間的 調整的’亦即該透鏡46之焦距為可調整的。藉此，該 九予糸統40即可提供變焦的功能。 了 發明之可齡'距的透鏡及應贱魏之光學系統提供 蓺之變焦方式。由於根據本發明之電極不需要如先前技 應與液體微滴直接接觸，因此可減少耗電量，亦不具 則技π中液珠可能被加熱、分解’或是蒸發的諸多問題。。 發明具體實施例之詳述，係希望能更加清楚描述本 本發明之kr ’’而並非以上賴揭露陳佳具體實施例來對 ΰ ，反地，其目的是希望能涵蓋各種改變 八 排於本發明所欲申請之專利範圍的範嘴内。 【圖式簡單說明】 =鱗示1糊靖_透鏡之示意圖。 圖。θ為根據本發明之第—較佳具體實闕之透鏡的示意 圖。）騎第-祕具體實施例進-步包含-潤滑層的示意 圖。° (c)為4第-較佳具體實施例進—步包含—頂板的示意 圖-為根據本發明之第二較佳具體實施例之透鏡的示意圖。 圖四係綠示採用根據本發明之透鏡的光學系統之示意圖。 【主要元件符號說明】 W:透鏡 11 :液珠 U :絕緣層 14 :底板 :控制電極 16 ··液珠電極 20 :透鏡 22Α、22Β :液體微滴 24 .底板 25 :第一電極 26 :潤滑層 27 :頂板 28 :第二電極 30 :透鏡 32Α、32Β :液體微滴 34 :底板 1323349 37 :頂板 40 :光學系統 44 :接收器 46A :液體微滴 38 :電極 42 :傳送器 46 :透鏡 46B :底板In general, the lenses of a zoomable optical system are roughly classified into mechanical zoom and electronic zoom. The mechanical zoom lens achieves the purpose of zooming by utilizing changes in the front and rear of the lens itself. Due to the increasingly thin and light digital cameras or camera-equipped mobile phones, the mechanical zoom lens is too thick and too large, and many thin and light cameras use electronic zoom lenses. In the conventional technique, the electronic zoom technique uses a dropiet as a lens, and uses electrowetting to control the shape and curvature of the bead, thereby changing the focal length of the bead. The liquid bead must be electrically conductive water or ^. The content of the patent No. 6,545,815 is a related example, wherein the device is to place a transparent conductive bead on the lubricating layer and the insulating layer, There is a plurality of healthy relays and liquid bead electrodes below the edge layer of the rim, and a voltage is supplied to the beads. By adjusting the contact angle, thereby changing the miscellaneous and coke characteristics of the bead and the external and external, the problem of the lens [the invention provides a lens with adjustable focal length and the application of the polarized lens Mouth = - lens. The lens contains - the liquid droplet can be placed and contains a set of 笫. The bottom plate is arranged such that the first electrode of the group can be selected as one of the first ligand droplets of the first electrode and the first electrode of the first electrode, whereby the liquid is in the liquid The droplet and each of the first electric potentials are permeable to change at a potential parallel to the first surface, and the angle between the liquid droplet and the focal length of the lens is adjustable, that is, the system Including f31# The specific embodiment is an optical system. The optical system transmitter and the connection = (two called 'and-lens. The polarized liquid droplet and the sum contains L. The lens contains - can be a bottom plate of the first surface of the culvert 3. The bottom plate is used for firstly arranging one of the electrodes, whereby the liquid micro-body droplets and each of the [rj two U-cores are transmitted through the liquid and the distance between the liquids For the poor sewing, it can be canned, that is, the lens is "," for the sake of smashing. Hunting this, the optical button can provide the function of Wei. The point and the fine shot are called the following (4) and the attached pole The liquid micro: one...-set=25 sets of the first electrode. The set of the first-electrode-the first-matching droplet and the dust of each of the first-electrode The liquid micrograph is further understood. 1323349 [Embodiment] The main purpose of the lens is to provide a lens with adjustable focal length and the application, the material will have a certain dielectric property, that is, under the addition, the direction of adding 2 To arrange further. Further, if the external charge =: the grain is unevenly "adding electric field 7: the τ dtim彳ί of the (4) droplets will contain many electric dipoles, the liquid droplets are in contact with each other, so Avoid many of the prior art = need and lens: #f (A) is the mirror according to the first preferred embodiment of the present invention: two: 5 = to (10), and - the bottom plate m · knife ~ clothing is not The influence of the electricity and the electricity is affected by the electric field. The body of the body is used to place the liquid droplets and is used to make the eccentricity of the (four) observable hybrids (four). , the foot of the lens is: increase the thickness of the effect of the 'the bottom plate 24 can be as shown in Figure 2 (8) does not include a turbid layer 26. Lubricating layer 26 is placed in the liquid ^ drop 1323349 iVii between electricity and can be a liquid-repellent two-sided 26 containing Teflon (4) Secret ^ Come. two. Fig. 3 ((:) another change of the lens of the diagram (Fig. 2 (4)): further includes an upper plate (upperpIate) 27. The top plate 27 includes a 28-new second electrode 28 disposed in such a manner that the second electrode is tilted. 'Therefore, the second potential is applied to the second electrode of each surface. The second electrode 28 and the set of first electrodes 25 are simultaneously used to achieve the effect of changing the shape of the liquid stupid droplet. 3. Figure 3 is a perspective view of a second preferred embodiment of the present invention. The lens 3G includes liquid droplets (32A, 32B), a bottom plate 34, and deniers 32A and 32B, respectively, which are unaffected by an electric field. The shape of the front and the second electric field is different. The difference between the second preferred embodiment and the first preferred embodiment is that the bottom plate 34 in the lens 3G is only for placing the liquid to generate an electric field, and the function of changing the ship is from the top plate 37. a plurality of electrodes 38 of the towel. Beibei. Figure 4 shows the optical system of the lens according to the present invention = Fig. Optical system 4 〇 includes - transmitter 42, receives $ Μ, and one through = 46 The transmitter 42 and the receiver 44 are respectively configured to provide and receive an optical letter lens 4β, and then center the light The learning signal is directed to the receiver by a transmitter 42. The lens 46 includes a liquid droplet 46 可 that can be polarized and a bottom plate 46β. The 氐々 46 Β is used to place the liquid droplet 46 and includes a set of first electrodes The second electrode is disposed such that the (four)-electrode can be selectively biased, and a first electric current is formed between the liquid droplet 46 and each of the first electrodes, respectively. The liquid droplets 46 Α and the first liquid droplets 46 各个 between the first electrodes and the adjustment between the plane parallel to a plane of the first surface, that is, the focal length of the lens 46 is adjustable. Therefore, the Jiuyu system 40 can provide a zoom function. The invention of the age-appropriate lens and the optical system of the Wei Wei provide a zoom mode. Since the electrode according to the present invention does not need to be as prior art The liquid droplets are in direct contact, so that the power consumption can be reduced, and there are many problems in which the liquid droplets may be heated, decomposed, or evaporated. The detailed description of the specific embodiments of the invention is intended to more clearly describe the book. Invented kr '' and It is not the case that the specific embodiment of Chen Jia is disclosed, but the purpose is to cover all kinds of changes in the scope of the eight patents in the patent scope of the invention. [Simplified illustration] = scale 1 Schematic diagram of a lens. Fig. θ is a schematic view of a lens according to a preferred embodiment of the present invention.) A schematic diagram of a step-by-step inclusion-lubricating layer. ° (c) is a preferred embodiment of the present invention - a schematic view of a top plate - a schematic view of a lens according to a second preferred embodiment of the present invention. Figure 4 is a schematic illustration of an optical system employing a lens in accordance with the present invention. [Description of main component symbols] W: Lens 11: Liquid bead U: Insulation layer 14: Base plate: Control electrode 16 · · Bead electrode 20: Lens 22Α, 22Β: Liquid droplet 24. Floor plate 25: First electrode 26: Lubrication Layer 27: Top plate 28: Second electrode 30: Lens 32Α, 32Β: Liquid droplet 34: Base plate 1323349 37: Top plate 40: Optical system 44: Receiver 46A: Liquid droplet 38: Electrode 42: Transmitter 46: Lens 46B : bottom plate
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