1296052 14021twf.doc 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種透鏡之加工夾具以及加工方法， 且特別是有關於一種透鏡之芯取加工夾具以及芯取加工方 法0 【先前技術】 目前常見之光學儀裔中’例如投影機(projector)、照 相機(camera)、顯微鏡(microscope)以及望遠鏡(telesc〇pe) 荨’大多係以多個透鏡來組成其鏡頭。因此，這些光學儀 器的精準度係與透鏡的加工準確度息息相關的。其中，又 以透鏡的芯取加工最為重要。 圖1、％示為習知球面透鏡在芯取加工夾具中的剖面示 意圖。請參照圖1，在球面透鏡102的芯取加工過程中 通常是先利用夾具100夾持球面透鏡搬，再藉由夾且刚 帶動球面透鏡102旋轉。由於球面透鏡1〇2之曲面⑽鱼 曲面Η)5的軸心係相互重合❸，因此當夾具⑽及球面透 鏡ί rm :之中心轴c為軸心做穩定旋轉(—ie 她,，球面魏i〇2之鏡芯係位於夾具的中心軸上， 也就疋說’球面透鏡102之曲面103與曲面 …轉°此時’即可進行球面== 的加工，而加工後的球面透鏡102之幾何中心將，二 透鏡==與曲面⑼之轴^ 面的軸心之間通常會具: 1296052 14021twf.doc 面透鏡的鏡芯’因而無法有效地控制 非球面透鏡的心取加工，而無法使加工後的非球面透鏡之 幾何中心可位於非球面透鏡之二曲面的軸心上。 【發明内容】 有鑑於此，本發明的目的就是在提供-種透鏡的芯取 加工方法，以提高透鏡之芯取加工的準麵。 取 本發明的另—目的是提供一種透鏡之芯取加工夾呈， :使透鏡精準地對位於其上，以便於進行透鏡的芯取加 本毛月提出-種透鏡的芯取加玉 =此透鏡係具有第—表面與第二表面，且 主曲面之外緣，構成。其中’接觸面係位於 供第-夾持元件區而與主曲面連接。接著，提 第-央持:；第-夹持元件包括 持部且有一夾持=一夹持兀件包括第二夾持部，且第-夾 ’ 又持面。之後，令第一忐ii $ /土七Μ 承靠於透叙接糾±。在 之 夾持部 與第-夹持元件之旋轉軸二。透鏡之弟一表面的軸心係 :、、;後々苐一失持元件承靠透鏡之第_ & -夾持元件共同夾持 =之弟-表面’以與第 夾持元件_帶_、^接者再u —讀元件與第二 轉動，以對透鏡==弟一夹持元件之旋轉轴為中心作 於透工夾具係藉其第-夾持部來承靠 接觸面，因此本發明之透鏡芯取加工夹具可^ 1296052 14021twf.doc ，與透鏡（甚至是非球面透鏡）完成對位，進而使透鏡之 弟一表面的軸心與第—夾持元件的旋轉軸重合。 為讓本發明之上述和其他目的、特徵和優點能更明顯 易懂’下文特舉較佳實施例，並配合_ 作詳細說 明如下。 【實施方式】 —本电明可使透鏡輕易定位於加工夾具上，以便於進行 二^加=製程。以下將以單面光學敏感度較高的非球面透 =列4本發明，但其並非用以限定本發明。熟習此技 二Γ依&本發明之精神而對下述之實施觸做變化，惟 具仍屬於本發明之範圍内。 在進行非球面透鏡的芯取加工製程之前，必須先提供 玉、面透鏡以及用以夾持非球面透鏡的透鏡芯取加工央 ς °以下將先賴本發明所烟之透鏡芯取加工央具以及 得加工之非球面透鏡。 ，2Α及圖2Β㈣為本發明中欲進行芯取加工的非 =透鏡之剖視圖及其俯視圖。請參照圖2 Α及圖2β， 透鏡2〇0具有第一表面210以及第二表面220，且 所構ί面Γ係由主曲面212、接觸面214以及轉折區216 其中，接觸面214係位於主曲面212的外緣，而 則係連接於主曲面212與接觸面214之間，以 觸面214與主曲面212相對於透鏡200之軸心係具有 而^曲度。以本實施例為例，主曲面212係非球面曲面， 而接觸面214通常為環狀平面。此外，接觸面214之内徑 1296052 14021twf.doc 工u六外寻於王曲面212的 特觸是，非球面透鏡2〇〇的第一表面別與非球面^ 200弟一表面22G相較之下，其具有較高的 = (photo sensitivity)。 予破感度 圖3繪示為本發明之透鏡芯取加工夹具的 立 圖。請參照圖3，透鏡芯取加工夹具3〇〇主㈣二邑 持元件310與第二夾持元件汹所構成。其中 元件3W包括第一夾持部312，其例 以持 並具有夾持面3H。第二夾持元件32〇則包括第 322、用以與第一夾持元件31。共同夾持待加卫之二# 例如是圖2所繪示之非球面透鏡2〇〇。 、見 元#=具_的第—夹持 疋件310可設有一抽氣孔316， 、 藉由抽氣孔316抽出第—夹持元件训與待 件310上 進而使待加工透鏡可吸附於第—夾持元 工泣^ Μ至圖4B繪不為本發明之非球面透鏡之芯取力 4Α·二各步驟的剖面示意圖。請同時參照圖2、圖3及η口 4Α，共圖2所繪示之非球面透鏡 ？：圖 =奴取加工夾具獨之後，接著令第 上。才t持!:312承靠於非球面透鏡的接觸面m 鏡的轉折區川卜^疋承罪於非球面透 乂使非球面透鏡2〇〇與第—夾持 1296052 14021twf.doc 位/此時’非球面透鏡200之第-表面2i。 弟一夾持元件310之旋轉軸R上。 就4 球面透鏡200之接觸面214的内徑D(也 ί=m )近似於第—夹持料細之第一 ==::Γ，因而使第—夹持部312之内緣318 兀：地承罪在非球面透鏡的轉折區216，以維持非球 面透= 200與第一夾持元件31〇的相對位置。其中:非球 觸面214的内徑D與第-夾持元件31〇 =，:广例如是在非球面模造之模具設丄 W吏用起純度加工機，即可將魏面透鏡· 叫的内徑D與第-夾持元件31〇之第一夹持部312 = 的^㈣在G.G()lmm叫，此精度對幾何求芯 疋非常佳的。 請繼續參照圖4A ’第-夾持部312之夹持面314通 本疋貼合於非球面魏200賴觸φ 214，以於加 中確實固定非球面透鏡在第—續元件則上的位 置，避免非球面透鏡200在加工過程中發生傾斜。值得注 意的是，雖然圖4Α所繪示之夾持面314係垂直㈣ 持元件3Η)的旋轉軸R (也就是說非球面透鏡2〇〇的接觸 面214係為水平面），然而在本發明之其他實施例中 -央持部312之夾持面314也可以是—斜面（如圖5所 示）。因此’本發明並不限定第-失持部阳之夾持面314 與水平面之失角角度，只要其可與待加1之透鏡的接觸面 1296052 14021twf.doc (例如是非球面透鏡200的接觸面214)貼合即可。 ，別的疋’在本發明之—較佳實施例中，還可以在將 200 2凡件31G的第—失持部312承靠於非球面透鏡 2!4^", 附^第=形成負壓空間317 ’以使非球面透鏡200吸 31G上，且其例如是第一夾持元件 200之間Γ^16、Ϊ抽出第—夾持元件31G與非球面透鏡 曰的工氣，進而形成負壓空間Μ?。 第發明還可以在令第一夾持元件310的 _ +寺邛312承罪於非球面透鏡2〇〇的接觸面214 ΐ免ΓΤΓ亀示）塗佈在非球面透鏡上，以 200造成刮傷。芯取加工製程中對非球面透鏡 細'而、#於 在後績形成負壓空間317的過程t， 面透鏡之間的氣體量，】= ；J增加非球面透鏡與第—夾持元件3U)之間的吸附 ，參照圖4B’在完_ 4A之組 弟二夾持元件320之第二夾持邻 接者便疋々 之第二表面22。，第一 元件。換言之，第為軟f央持 形:依據其所接觸之曲面而有所變化， 面透鏡之第二表面22。的過对因施 1296052 14021twf.doc 球面透鏡2〇〇的偏移或傾斜，進而影響非球面透鏡，之 芯取加工的精確度。 —請繼續參照圖4B，當非球面透鏡綱已藉由第一失 ，凡件310與第二夾持元件KG將其夾持住後，接著便令 第-夾持το件310、非球面透鏡以及第二夾持元件伽 以方疋轉軸R曰為中〜作旋轉，以進行非球面透鏡的芯 意的是’在加工完成之後，非球面透鏡200 心:°〜將、似於非球面透鏡2⑽之第-表面210的轴 由上述可知，本發明之透鏡芯取加工夾具 夾持部的内緣來承靠於非球面透鏡的轉折區，因上本發明 取加工夾具可輕易地與非球面透鏡完成對位：進 =球面透鏡之第-表面的軸心與第一夾持元件的旋轉 二而且’本發明之第二趙元件較佳暇軟質夹持 兀件’因此在非球面透鏡與第-夾持元件完成對位之德、 ==夹持元件承靠在非球面透鏡之第 後可 避免因施力不均而導致非球面透鏡偏移或傾斜。 了 玫面=f於本㈣H持元件的内徑係近似於非 =魏吸附於第一夹持元件上。而且，為使第—央ί非 於於鏡面上蝴_，以使透絲面與纽_ 更: 12 1296052 σ，本發明可有效地將 ，以避免非球面透鏡在 可/閏滑而防刮傷透鏡表面。由此可知 非球面透鏡固定於第一夾持元件上， 芯取力:工製財發生偏移或傾斜而影響加工的精準度。 、，“上所述，本發明可在進行芯取加工時，快速將鏡片 對位吸附，以制自動化作冑之功效，進而提高透鏡之芯取 加工的精確度，以有效地㈣加工制透鏡錢何中心與 曲面軸心之間的偏移量，進而改善透鏡的生產良率。而且， 利用本U之方法加;^而成的非球面透鏡來組裝光學 的鏡頭組亦可獲得較佳的組裝良率。 叩 ρρ 本發明[贿佳實施_露如上，料並非甩以 ^明咳何熟習此技藝者，在不脫離本發明之精神 二粑圍内’當可作些狀更動與卿，因此本發明之保講 犯圍當視後附之申請專利範_界定者為準。 …又 【圖式簡單說明】 圖1繪示為習知球面透鏡在芯取加工1296052 14021twf.doc IX. Description of the Invention: [Technical Field] The present invention relates to a processing jig for a lens and a processing method thereof, and more particularly to a core processing jig for a lens and a core processing method. Technology] At present, optical instruments such as projectors, cameras, microscopes, and telescopes are mostly composed of a plurality of lenses to form their lenses. Therefore, the accuracy of these optical instruments is closely related to the processing accuracy of the lens. Among them, the core processing of the lens is the most important. Figure 1 and % are schematic cross-sectional views of a conventional spherical lens in a core processing jig. Referring to Fig. 1, in the core processing of the spherical lens 102, the spherical lens is normally held by the jig 100, and the spherical lens 102 is rotated by the clamping. Since the axis of the spherical lens 1〇2 (10) is perpendicular to the axis of the fish surface, the center axis c of the jig (10) and the spherical lens ί rm is a stable rotation (—ie she, spherical Wei) The mirror core of i〇2 is located on the central axis of the fixture, that is to say, the curved surface 103 and the curved surface of the spherical lens 102 can be processed by the spherical surface ==, and the processed spherical lens 102 can be processed. The geometric center, between the two lenses == and the axis of the surface of the curved surface (9), usually has: 1296052 14021twf.doc The mirror core of the surface lens' thus cannot effectively control the core processing of the aspheric lens, and cannot The geometric center of the processed aspherical lens may be located on the axis of the two curved surfaces of the aspherical lens. SUMMARY OF THE INVENTION In view of the above, the object of the present invention is to provide a core processing method for a lens to improve the lens. The core of the core processing is taken. Another object of the present invention is to provide a lens core processing clip, which is such that the lens is accurately positioned thereon, so as to facilitate the core picking of the lens. Core extraction plus jade = this lens system There is a first surface and a second surface, and the outer surface of the main curved surface is formed, wherein the 'contact surface is located in the region for the first clamping element and is connected to the main curved surface. Then, the first-phase: the first clamping The component includes a holding portion and has a clamping member = a clamping member includes a second clamping portion, and the first clamping member holds the surface. Thereafter, the first 忐 ii $ / 土七Μ is supported by the transparent sensing In the clamping portion and the rotating shaft of the first clamping member, the axis of the surface of the lens is:,; the rear bearing and the holding member are supported by the lens _ & Holding the younger brother-surface with the first clamping element _, _, ^ then re-reading the component and the second rotation to center on the rotation axis of the lens == brother-clamping element By the first clamping portion to bear the contact surface, the lens core processing tool of the present invention can be aligned with the lens (or even the aspheric lens), thereby making the surface of the lens The axis coincides with the axis of rotation of the first clamping element. To make the above and other objects, features and advantages of the present invention more apparent The following is a detailed description of the preferred embodiment, and is described in detail below. [Embodiment] - The present invention can easily position the lens on the processing jig to facilitate the process of adding 2 = the following process. The invention relates to the present invention, but it is not intended to limit the present invention. It is familiar with the spirit of the present invention and the following implementations are changed, but still It is within the scope of the present invention. Before performing the core processing process of the aspherical lens, it is necessary to provide a jade, a surface lens, and a lens core for holding the aspherical lens. The lens core takes the machining center and the processed aspheric lens. 2Α and Fig. 2Β(4) are cross-sectional views of a non-lens to be subjected to core processing in the present invention and a plan view thereof. Referring to FIG. 2 and FIG. 2β, the lens 2〇0 has a first surface 210 and a second surface 220, and the surface is formed by a main curved surface 212, a contact surface 214, and a turning area 216, wherein the contact surface 214 is located. The outer edge of the main curved surface 212 is connected between the main curved surface 212 and the contact surface 214, and the contact surface 214 and the main curved surface 212 have a curvature with respect to the axis of the lens 200. Taking the present embodiment as an example, the main curved surface 212 is an aspherical curved surface, and the contact surface 214 is generally an annular flat surface. In addition, the inner surface of the contact surface 214 has an inner diameter of 1 290 605 14021 twf. The special surface of the aspherical lens 212 is that the first surface of the aspherical lens 2 is not compared with the surface of the aspheric surface , which has a higher = (photo sensitivity). The degree of damage is shown in Fig. 3 as an elevation of the lens core processing jig of the present invention. Referring to Fig. 3, the lens core picking jig 3 is composed of a main (four) two holding member 310 and a second holding member. The element 3W includes a first clamping portion 312 that holds and has a clamping surface 3H. The second clamping element 32 包括 includes a 322 for use with the first clamping element 31. The common holding of the two to be added is, for example, the aspherical lens 2 图 shown in FIG. 2 . The first clamping member 310 can be provided with a suction hole 316, and the first clamping member and the holding member 310 are extracted by the air discharging hole 316, so that the lens to be processed can be adsorbed to the first portion. The clamper is crying to Fig. 4B to draw a cross-sectional view of the steps of the core of the aspherical lens of the present invention. Please refer to Figure 2, Figure 3 and η port 4Α at the same time, the aspheric lens shown in Figure 2? : Figure = After the slave machining fixture is alone, then the first step. Only t!! 312 bearing the contact surface of the aspherical lens m Mirror's turning area Chuanbu ^ 疋 疋 于 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 When the 'aspherical lens 200 is the first surface 2i. The first one of the clamping elements 310 is on the axis of rotation R. The inner diameter D (also ί=m ) of the contact surface 214 of the 4-spherical lens 200 approximates the first ==::Γ of the first-thickness, so that the inner edge 318 of the first clamping portion 312 is: The sin is in the turning area 216 of the aspherical lens to maintain the aspherical penetration = 200 relative to the first clamping element 31A. Wherein: the inner diameter D of the aspherical contact surface 214 and the first-clamping element 31〇=,: for example, in a mold of aspherical molding, using a purity processing machine, the Wei-face lens can be called The inner diameter D and the ^(4) of the first clamping portion 312 of the first clamping member 31 are called at GG() lmm, and this precision is very good for the geometric core. Continuing to refer to FIG. 4A, the clamping surface 314 of the first clamping portion 312 is attached to the aspherical surface of the abutting surface φ 214 so as to accurately fix the position of the aspherical lens on the first component. The aspherical lens 200 is prevented from tilting during processing. It should be noted that although the clamping surface 314 shown in FIG. 4A is perpendicular to the rotation axis R of the component (3) (that is, the contact surface 214 of the aspherical lens 2 is a horizontal plane), the present invention is In other embodiments, the clamping surface 314 of the central portion 312 can also be a bevel (as shown in Figure 5). Therefore, the present invention does not limit the angle of declination of the clamping surface 314 of the first-missing portion with respect to the horizontal plane as long as it can be in contact with the lens to be added 1 1290652 14021 twf.doc (for example, the contact surface of the aspherical lens 200) 214) Fit it. In the preferred embodiment of the present invention, it is also possible to bear the first missing portion 312 of the member 31G against the aspherical lens 2! 4^" The negative pressure space 317' is such that the aspherical lens 200 is sucked into the 31G, and is, for example, between the first clamping elements 200, and the first clamping element 31G and the aspherical lens Ϊ are extracted, thereby forming Negative pressure space? The first invention can also be applied to the aspherical lens by causing the _ + 邛 312 of the first clamping member 310 to spoof the contact surface 214 of the aspherical lens 2 , to cause scratching at 200 . In the core processing process, the process of the aspherical lens is thin, and #, in the process of forming the negative pressure space 317, the amount of gas between the surface lenses, ??? =; J increases the aspherical lens and the first clamping element 3U The second surface 22 of the adjacent holder note is clamped to the second of the group 2 clamping members 320 of FIG. 4B'. , the first component. In other words, the first soft-figure shape: the second surface 22 of the face lens varies depending on the curved surface it contacts. The offset or tilt of the spherical lens 2〇〇 of the 1296052 14021twf.doc spherical lens, which affects the accuracy of the aspherical lens. - With continued reference to FIG. 4B, when the aspherical lens has been clamped by the first member, the member 310 and the second clamping member KG, and then the first clamping member 310, the aspheric lens And the second clamping element is oscillated with the rotation axis R曰 being medium to rotate, so that the core of the aspherical lens is 'after the machining is completed, the aspheric lens 200: °~ will be like an aspheric lens 2(10) The axis of the first surface 210 is known from the above, the lens core of the present invention takes the inner edge of the clamping portion of the processing jig to bear the turning region of the aspherical lens, and the processing jig can be easily aspherical with the processing jig of the present invention. The lens completes the alignment: the axis of the first surface of the spherical lens and the rotation of the first clamping element and the 'second Zhao element of the invention is preferably a soft clamping element'. Therefore, in the aspheric lens and the - The clamping element completes the alignment, and the == clamping element bears against the aspherical lens to avoid offset or tilt of the aspheric lens due to uneven application. The inner diameter of the element is similar to that of the non-welding element on the first clamping element. Moreover, in order to make the first-side 非 非 , , , , , , , , , , , , , 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 Injure the lens surface. It can be seen that the aspherical lens is fixed on the first clamping element, and the core takes force: the offset or inclination of the industrial property affects the precision of the processing. "In the above, the present invention can quickly align the lens in position during core processing, thereby improving the efficiency of the core processing of the lens, thereby effectively (4) processing the lens. The offset between the center of the money and the axis of the curved surface, thereby improving the production yield of the lens. Moreover, the aspherical lens formed by the method of the present invention can also be used to assemble an optical lens group.组装ρρ The present invention [bribe implementation _ dew as above, is not expected to know how to familiarize yourself with this skill, without departing from the spirit of the invention, when it is possible to make some changes and Qing, Therefore, the instalment of the invention is defined by the patent application model defined in the following paragraphs. [And the simple description of the drawing] Figure 1 shows the conventional spherical lens in the core processing.
圖3紛示為本發明之透鏡芯取加工夾具的剖面示意 圖4Α至圖4Β繪示為 工潘鞋夂I圧抱，，l ^ 為本發明之非球面透鏡之芯取加FIG. 3 is a schematic cross-sectional view of the lens core processing jig of the present invention. FIG. 4A to FIG. 4Β are diagrams showing the work of the aspherical lens of the present invention.
13 1296052 14021twf.doc 100 :夾具 102 :球面透鏡 103、105 :曲面 200 :非球面透鏡 210 :第一表面 212 :主曲面 214 :接觸面 216 :轉折區 220 :第二表面 300 :透鏡之芯取加工夾具 310 :第一夾持元件 312 :第一夾持部 314 :夾持面 316 :抽氣孔 317 :負壓空間 318 :内緣 320 :第二夾持元件 322 :第二夾持部 1413 1296052 14021twf.doc 100 : Fixture 102 : Spherical lens 103 , 105 : Curved surface 200 : Aspherical lens 210 : First surface 212 : Main curved surface 214 : Contact surface 216 : Transition region 220 : Second surface 300 : Core of the lens Processing jig 310: first clamping member 312: first clamping portion 314: clamping surface 316: suction hole 317: negative pressure space 318: inner edge 320: second clamping member 322: second clamping portion 14