200940250 六、發明說明： 【發明所屬之技術領域】 本發明是關於用來硏磨透鏡等的球面的球面硏磨裝置 ，尤其是有關適合於：不必要求熟練度即可製得圓球度很 高的硏磨加工面的球面硏磨裝置。 【先前技術】 0 近年來，隨著數位技術的進展，高精細的攝影系統的 需求增加。因此，對於依據光學設計、機構設計的各種透 鏡元件的精度要求也愈趨嚴格。 再者，隨著高倍率伸縮鏡頭系統的普及化，構成該伸 縮鏡頭系統的透鏡元件的需求也不斷增大。因此，期待能 夠獲得價廉的高精度透鏡元件。 專利文獻1的透鏡硏磨裝置就是對應這種需求的硏磨 裝置的其中一例。這種透鏡硏磨裝置，是將作爲硏磨對象 Q 的透鏡載置於會旋轉的硏磨皿的上面，利用擺動機構使得 該透鏡進行前後左右擺動來對於透鏡進行硏磨。 [專利文獻1]日本特開2004-25 5492號公報 【發明內容】 [發明所欲解決的課題] 前述的傳統硏磨裝置，用來硏磨以往所要求的程度的 精度的透鏡，是能夠對應並無太大的問題。 但是，隨著所要求的精度愈趨嚴格，前述的硏磨裝置 -4- 200940250 就無法對應了。這種硏磨裝置的情況，是讓透鏡在硏磨皿 的上面朝前後左右做往復運動來進行硏磨，這種情況下， 其運動的方向會改變。因此，在往復運動的兩端部會產生 兩個靜止點，而成爲不連續的運動。而且在往復運動的中 途與兩端部，加諸在透鏡的壓力也會微妙地改變，不會正 確地維持在一定値。 在透鏡加工的過程中，想要提高透鏡球面的精度的重 0 要事項是不要讓局部性的應力加諸到透鏡身上，然而，傳 統的硏磨裝置’除了透鏡的運動不連續之外，加諸在透鏡 的壓力也會微妙地改變，因此難以對應於嚴格的精度要求 ，這是其問題點。 [用以解決課題的手段] 本發明是爲了解決前述課題而開發完成的，是一種將 光學元件的表面在球面硏磨皿進行磨合，以將光學元件的 Φ 表面硏磨成球面狀的球面硏磨裝置，其特徵在於： 具備有：硏磨軸桿，是用來支承前述光學元件使其保 持抵靠在前述球面硏磨皿的狀態；旋轉驅動部，是用來使 前述硏磨軸桿旋轉’且該旋轉驅動部的軸心是通過前述光 學元件的表面的硏磨目標球面的曲率中心；支承機構，是 設在該旋轉驅動部與前述硏磨軸桿之間，具有以前述硏磨 目標球面的曲率中心作爲中心的球面狀或圓筒狀的曲面， 藉由將前述硏磨軸桿沿著這個曲面挪移，而將該硏磨軸桿 傾斜支承成使得該硏磨軸桿的軸心或軸心的延長線隨時都 -5- 200940250 是通過前述曲率中心’隨著該硏磨軸桿的旋轉而使得被支 承在該硏磨軸桿上的前述光學元件沿著前述硏磨目標球面 進行移動。 [發明的效果] 根據本發明，能夠使得透鏡之類的光學元件的運動變 成連續性的運動’並且加諸於光學元件的壓力也保持一定 ，因而能夠以很高的精度來硏磨球面。 【實施方式】 [發明之最佳實施方式] 茲佐以圖面來詳細説明本發明之一實施方式的球面硏 磨裝置。第1圖是顯示本實施方式的球面硏磨裝置的槪略 結構圖。第2圖是顯示球面硏磨裝置的動作的示意圖。 本實施方式的球面硏磨裝置，是用來將光學元件的表 φ 面在球面硏磨皿進行磨合，以將光學元件的表面硏磨成球 面狀的裝置。進行硏磨的光學元件，是有球面透鏡、球面 鏡等。此處將以透鏡作爲說明例。又，本發明的特徵在於 :以將透鏡的表面予以精製硏磨後的狀態的表面（因應於 透鏡的旋轉速度等的各種條件而稍微改變目標尺寸的情況 下，則是指該尺寸的表面）也就是硏磨目標球面的曲率中 心作爲中心，來配設硏磨軸桿、球面硏磨皿等的這些方面 。因此，其他的構成部分是可以採用習知的所有的球面硏 磨裝置。 -6 - 200940250 本實施方式的球面硏磨裝置1是如第1圖所示，主要 是由：硏磨軸桿2、旋轉驅動部3、支承機構4、硏磨皿旋 轉驅動部5所構成的。 此外，將被硏磨透鏡7的表面的前述硏磨目標球面的 曲率中心當作爲中心G。此處，因爲支承機構4具有後述 的滑動面，因此，中心G將成爲前述硏磨目標球面的球心 〇 ^ 硏麿軸桿2是用來支承被硏磨透鏡7，而且是將被硏 磨透鏡7支承成抵靠在球面硏磨皿8的狀態。這個硏磨軸 桿2是被設定成：使得其軸心或者軸心的延長線隨時都通 過前述中心G。在硏磨軸桿2的前端，設有支承銷12，該 支承銷12是嵌合在透鏡固定夾具10的支承凹部11，以單 點方式來支承被硏磨透鏡7。硏磨軸桿2是做成可伸縮。 如此一來，當被硏磨透鏡7是凸透鏡的情況下，是要硏磨 其凸面，在這種情況下是如第1圖中的實線所示般地，硏 φ 磨軸桿2是伸展成較之前述硏磨目標球面的曲率中心也就 是前述中心G更長。此外，當被硏磨透鏡7是凹透鏡的情 況下，則是如第1圖中的假想線所示般地，硏磨軸桿2是 縮短成較之前述中心G更短。 旋轉驅動部3是用來令硏磨軸桿2旋轉的驅動部。這 個旋轉驅動部3是被設定成：其旋轉軸（未圖示）的軸心 通過前述中心G。旋轉驅動部3是具備有驅動馬達等而構 成的。此外，亦可採用各種習知的裝置來當作旋轉驅動部 3。例如：亦可採用從外部的驅動源經由皮帶等來傳遞轉 200940250 矩的構造。在這個旋轉驅動部3設置了加壓裝置（未圖示 )。作爲這個加壓裝置，是可以採用設在既有的球面硏磨 裝置上的所有的加壓裝置。 藉由這個旋轉驅動部3，硏磨軸桿2將會以中心G作 爲基準來進行旋轉，並且被加諸了預先設定好的的壓力。 這個設定壓力是因應於被硏磨透鏡7、硏磨軸桿2的旋轉 速度等的各種條件而被適度地設定。 0 支承機構4是藉由將前述硏磨軸桿2予以挪移，而令 這個硏磨軸桿2以前述中心2作爲中心，來產生傾斜的機 構。更具體地說明，支承機構4，是設在旋轉驅動部3與 硏磨軸桿2之間，具有以前述硏磨目標球面的曲率中心作 爲中心的球面狀的曲面，藉由將硏磨軸桿2沿著這個曲面 挪移，而將該硏磨軸桿2傾斜支承成使得該硏磨軸桿2的 軸心或軸心的延長線隨時都是通過前述曲率中心，隨著由 旋轉驅動部3所驅動的硏磨軸桿2的旋轉而使得被支承在 Q 該硏磨軸桿2上的被硏磨透鏡7沿著前述硏磨目標球面進 行移動的機構。 支承機構4主要是由：基板4A和可動板4B所構成的 。基板4A是用來支承可動板4B，而且將其支承成可以滑 動的構件。基板4A是連結在旋轉驅動部3的旋轉軸，受 到旋轉驅動部3的驅動而在一固定位置進行旋轉。在基板 4A的下側面形成可與可動板4B做滑動接觸的基板側滑動 面4C。這個基板側滑動面4C是形成：以前述硏磨目標球 面S 1的曲率中心也就是中心G作爲中心的曲面狀。基板 -8 - 200940250 側滑動面4C更具體地說明的話，是形成球面狀（作爲球 面S2的一部分）。 可動板4B是可滑動地被支承於基板4A，是相對於這 個基板4A進行滑動而可使得硏磨軸桿2以中心G作爲中 心來進行傾斜的構件。在可動板4B的上側面形成：用來 可與基板4 A的基板側滑動面4C進行滑動接觸的可動板側 滑動面4D。這個可動板側滑動面4D是與基板4A的基板 0 側滑動面4C同樣地，形成以前述硏磨目標球面的曲率中 心也就是中心G作爲中心的球面狀。在可動板4B的下側 面，成一體地固定著硏磨軸桿2。這個硏磨軸桿2是被設 定安裝成：其軸心通過前述硏磨目標球面的曲率中心也就 是中心G。 基板4A與可動板4B之間是利用結合手段而結合在一 起。這個結合手段是可採用各種物品。例如可採用由：貫 穿螺栓和墊圈所構成的。在基板4A與可動板4B上，穿設 φ 其內徑大於貫穿螺栓的直徑的螺栓孔，將基板4A與可動 板4B靠合成可以互相挪移，以安裝了較螺栓孔更大的墊 圈的貫穿螺栓來將基板4A與可動板4B互相結合在一起。 當然也可以設置其他的結構的結合手段，所有的公知手段 都可以採用。 此外，在硏磨皿旋轉驅動部5設有傾斜機構（未圖示 )，用來使其旋轉軸適度地傾斜。這種傾斜機構是製作成 可使得安裝在硏磨皿旋轉驅動部5的球面硏磨皿8的硏磨 面沿著以中心G作爲中心的前述硏磨目標球面S 1進行移 -9- 200940250 動。傾斜機構的具體的結構是可採用：能夠進行這種動作 的所有已知的機構。 球面硏磨皿8爲了配合被硏磨透鏡7的前述硏磨目標 球面的曲率的不同，以及表面的凹凸的不同，而預先準備 了複數種球面硏磨皿8。各種球面硏磨皿8可以適度地更 換安裝到硏磨皿旋轉驅動部5。 具有上述結構的球面硏磨裝置1是以下列說明的方式 ^ 來使用。 〇 首先，配合被硏磨透鏡7的硏磨目標球面S1的曲率 來調整硏磨軸桿2的長度。亦即，以使被硏磨透鏡7的硏 磨目標球面S1的曲率半徑與從中心G起迄被硏磨透鏡7 的硏磨面爲止的距離趨於一致的方式，來設定硏磨軸桿2 的長度。然後，令支承機構4的基板側滑動面4C與可動 板側滑動面4D進行滑動，以使得可動板4B相對於基板 4A進行挪移，進而使得硏磨軸桿2的角度傾斜。這個硏 φ 磨軸桿2的傾斜角度是被設定成：可使得被硏磨透鏡7在 進行磨合時’在完全不會超越出球面硏磨皿8的硏磨面的 範圍內，被硏磨透鏡7的整個被硏磨面都可以受到磨合的 角度。 此外’以硏磨皿旋轉驅動部5來調整球面硏磨皿8的 高度’使得從中心G至球面硏磨皿8的硏磨面爲止的距離 與前述硏磨目標球面S1的曲率半徑趨於一致。球面硏磨 皿8的傾斜角度可以設定成兼作爲硏磨軸桿2的傾斜角度 -10- 200940250 在這種狀態下’將已經安裝在透鏡固定夾具10上的 被硏磨透鏡7設置到球面硏磨皿8，將硏磨軸桿2的支承 銷12嵌合到透鏡固定夾具1〇的支承凹部π。 在這種狀態下，令旋轉驅動部3與硏磨皿旋轉驅動部 5進行作動。藉此，硏磨軸桿2將會以第2圖（A) 、( b )、（C)所示的方式進行作動。具體而言，支承機構4 的基板4A受到旋轉驅動部3的驅動而旋轉的話，位在與 0 這個基板4A互相錯開的位置上的可動板4B將會以旋轉驅 動部3的旋轉軸作爲中心來進行公轉。如此一來，安裝在 可動板4 B上的硏磨軸桿2將會以中心G作爲基點，以傾 斜的狀態進行旋轉。 從第2圖（A)旋轉90度將會變成第2圖（B)，旋 轉180度將會變成第2圖（C)。然而，在這種旋轉的過 程中，在中心G的位置處，硏磨軸桿2將不會偏向而會在 該位置進行旋轉。如此一來，硏磨軸桿2的支承銷12將 Q 會以中心G作爲中心來進行旋轉。亦即，如第3圖所示般 地，硏磨軸桿2的支承銷12將會以中心G作爲中心來進 行旋轉，其旋轉動作是宛如從中心G垂吊下來的鐘擺沿著 以中心G作爲球心的球面來畫出圓軌跡般地進行旋轉。 如此一來，被硏磨透鏡7的被硏磨面將會一面與球面 硏磨皿8進行磨合，一面沿著前述硏磨目標球面S1進行 旋轉。 將這個動作顯示於第4圖。第4圖是顯示出將硏磨軸 桿2利用旋轉驅動部3予以旋轉90度、180度、270度、 -11 - 200940250 360度後的4種狀態。第4圖中的圓14是表斥 進行右旋轉的球面硏磨皿8。第4圖中的圓15 心G作爲中心來做鐘擺運動而進行旋轉的被硏 動作。此處’因爲硏磨皿旋轉驅動部5被設定 點傾斜的狀態，所以相對於球面硏磨皿8的旋 1 4 ’以中心G作爲中心來做鐘擺運動的被硏磨 15是呈偏心。亦即，被硏磨透鏡7是在對於均 呈偏心的位置進行公轉。 相對於這個球面硏磨皿8的旋轉運動，被 是如圓1 5所示般地，以中心G作爲中心來做 因此對於被硏磨透鏡7的被硏磨面是加諸均等 且是沿著前述硏磨目標球面，一邊移動一邊受 此外，被硏磨透鏡7爲凹透鏡的情況，雖 1圖的假想線所示，但是，基本的動作是與上 全相同。 如此一來，可使得被硏磨透鏡7的硏磨面 磨目標球面S1正確地移動，而可將被硏磨透; 面保持高圓球度而予以高精度地精製硏磨完成 熟練度就可以很容易獲得高圓球度的硏磨加工 在透鏡加工過程中，不要讓透鏡承受到局 的做法，對於提高透鏡球面的精度上是很重要 面硏磨裝置1是可令被硏磨透鏡7的硏磨面’ 磨目標球面S1正確且連續地移動’所以透鏡 有不連續的現象’加諸在透鏡的壓力也保持一 :在固定位置 是表示以中 磨透鏡7的 :成稍微有一 :轉運動的圓 透鏡7的圓 €面硏磨皿8 :硏磨透鏡7 鐘擺運動， 的壓力，而 到硏磨。 然是變成第 述的情況完 沿著前述硏 鏡7的硏磨 。不必要求 面。 部性的應力 的。根據球 沿著前述硏 的運動不會 定，因此能 -12 - .200940250 夠以高精度來硏磨球面。 [變形實施方式] 在前述實施方式中，雖然是將支承機構4的基板4A 的基板側滑動面4C以及可動板4B的可動板側滑動面4D 作成球面狀，但也可以由：以前述硏磨目標球面的曲率中 心G作爲中心的圓筒面的一部分來構成。硏磨軸桿2只要 是能夠以中心G作爲基準來進行傾斜的結構的話即可’所 〇 以並不限於球面，亦可爲圓筒面。這種情況也是可以達到 與前述同樣的作用和效果。 此外，雖然是將支承銷12設在硏磨軸桿2的前端， 但是亦可採用其他的結構來作爲支承手段。只要是能夠支 承被硏磨透鏡7的所有的結構都可以採用。 【圖式簡單說明】 Q 第1圖是顯示本發明的實施方式的球面硏磨裝置的槪 略結構圖。 第2圖是顯示本發明的實施方式的球面硏磨裝置的硏 磨軸桿的動作的示意圖。 第3圖是顯示本發明的實施方式的球面硏磨裝置以硏 磨軸桿的中心G作爲基準時的動作的示意圖。 第4圖是顯示本發明的實施方式的球面硏磨裝置，依 據硏磨軸桿的動作時，被硏磨透鏡相對於球面硏磨皿的相 對運動的示意圖。 -13- 200940250 【主要元件符號說明】 1 :球面硏磨裝置 2 :硏磨軸桿 3 :旋轉驅動部200940250 VI. Description of the Invention: [Technical Field] The present invention relates to a spherical honing device for honing a spherical surface of a lens or the like, and particularly suitable for: a sphericity is high without requiring proficiency A honing device for honing the machined surface. [Prior Art] 0 In recent years, with the advancement of digital technology, the demand for high-definition photographic systems has increased. Therefore, the accuracy requirements for various lens elements based on optical design and mechanism design are becoming stricter. Furthermore, with the popularization of high-magnification telescopic lens systems, the demand for lens elements constituting the expansion lens system has also increased. Therefore, it is expected that a high-precision lens element which is inexpensive can be obtained. The lens honing device of Patent Document 1 is an example of a honing device corresponding to such a demand. In this lens honing device, a lens as a honing object Q is placed on the top of a rotating honing dish, and the lens is honed by the oscillating mechanism so that the lens is swung back and forth and left and right. [Problem to be Solved by the Invention] The conventional honing device described above is capable of honing a lens having a precision required in the past. There are not too many problems. However, as the required accuracy becomes stricter, the aforementioned honing device -4-200940250 cannot be matched. In the case of such a honing device, the lens is honed by reciprocating the front, back, left, and right sides of the honing dish, in which case the direction of movement changes. Therefore, two stationary points are generated at both ends of the reciprocating motion, and become discontinuous motion. Moreover, in the middle and both ends of the reciprocating motion, the pressure applied to the lens also subtly changes and does not properly maintain a certain enthalpy. In the process of lens processing, the important thing to improve the accuracy of the spherical surface of the lens is to not allow local stress to be applied to the lens. However, the conventional honing device 'except for the discontinuity of the movement of the lens, plus The pressures on the lenses also subtly change, so it is difficult to correspond to strict accuracy requirements, which is the problem. [Means for Solving the Problems] The present invention has been developed to solve the above problems, and is a spherical surface in which a surface of an optical element is ground in a spherical honing dish to honing a Φ surface of the optical element into a spherical shape. a grinding device, comprising: a honing shaft for supporting the optical element to be held against the spherical honing vessel; and a rotary driving portion for rotating the honing shaft And the axis of the rotation driving portion is a center of curvature of the honing target spherical surface passing through the surface of the optical element; the supporting mechanism is provided between the rotation driving portion and the honing shaft, and has the honing target a spherical or cylindrical curved surface centered on the center of curvature of the spherical surface, and the honing shaft is tilted and supported by the honing shaft along the curved surface so that the axis of the honing shaft or The extension of the axis is always -5 to 200940250. The aforementioned optical element supported on the honing shaft along the aforementioned 曲率 by the rotation of the honing shaft Spherical target moves. [Effects of the Invention] According to the present invention, the movement of the optical element such as a lens can be made into a continuous motion 'and the pressure applied to the optical element is also kept constant, so that the spherical surface can be honed with high precision. [Embodiment] BEST MODE FOR CARRYING OUT THE INVENTION A spherical honing device according to an embodiment of the present invention will be described in detail with reference to the drawings. Fig. 1 is a schematic structural view showing a spherical honing device of the present embodiment. Fig. 2 is a schematic view showing the operation of the spherical honing device. The spherical honing device of the present embodiment is a device for honing the surface of the optical element in a spherical honing dish to honing the surface of the optical element into a spherical shape. The optical elements to be honed are spherical lenses, spherical mirrors, and the like. A lens will be taken as an illustrative example here. Further, the present invention is characterized in that the surface of the lens is polished and polished (the surface of the size is changed when the target size is slightly changed depending on various conditions such as the rotational speed of the lens). That is, honing the center of curvature of the target spherical surface as a center, and arranging these aspects of the honing shaft, the spherical honing dish, and the like. Therefore, other components can be used with all known spherical honing devices. -6 - 200940250 The spherical honing device 1 of the present embodiment is mainly composed of a honing shaft 2, a rotation driving unit 3, a support mechanism 4, and a honing wheel rotation driving unit 5 as shown in Fig. 1 . . Further, the center of curvature of the aforementioned honing target spherical surface of the surface of the honing lens 7 is taken as the center G. Here, since the support mechanism 4 has a sliding surface to be described later, the center G will be the center of the honing target spherical surface. The shaft 2 is used to support the honed lens 7, and is to be honed. The lens 7 is supported in a state of abutting against the spherical grindstone 8. This honing shaft 2 is set such that an extension of its axis or axis passes through the aforementioned center G at any time. At the front end of the honing shaft 2, a support pin 12 is provided, which is fitted to the support recess 11 of the lens fixing jig 10, and supports the honing lens 7 in a single point. The honing shaft 2 is made telescopic. In this case, when the honing lens 7 is a convex lens, the convex surface is honed, in this case, as shown by the solid line in Fig. 1, the 硏φ grinding shaft 2 is stretched. The center of curvature of the aforementioned honing target spherical surface is longer than the aforementioned center G. Further, when the honing lens 7 is a concave lens, the honing shaft 2 is shortened to be shorter than the center G as indicated by the imaginary line in Fig. 1. The rotation drive unit 3 is a drive unit for rotating the honing shaft 2 . This rotation drive unit 3 is set such that the axis of the rotation axis (not shown) passes through the center G. The rotary drive unit 3 is configured to include a drive motor or the like. Further, various conventional devices can be employed as the rotary drive unit 3. For example, it is also possible to transmit a structure in which the torque of 200940250 is transmitted from an external driving source via a belt or the like. A pressurizing device (not shown) is provided in this rotary drive unit 3. As the pressurizing means, all of the pressurizing means provided on the existing spherical honing means can be employed. With this rotary drive unit 3, the honing shaft 2 is rotated with reference to the center G and is applied with a predetermined pressure. This set pressure is appropriately set in accordance with various conditions such as the honing lens 7 and the rotational speed of the honing shaft 2. The support mechanism 4 is a mechanism for causing the honing shaft 2 to be tilted by centering the center 2 by moving the honing shaft 2 described above. More specifically, the support mechanism 4 is provided between the rotation drive unit 3 and the honing shaft 2, and has a spherical curved surface centering on the center of curvature of the honing target spherical surface, and the honing shaft is 2 is moved along the curved surface, and the honing shaft 2 is obliquely supported such that the axis of the shaft or the axis of the honing shaft 2 passes through the aforementioned center of curvature at any time, with the rotation driving portion 3 The rotation of the driven honing shaft 2 causes the honed lens 7 supported on the honing shaft 2 to move along the honing target spherical surface. The support mechanism 4 is mainly composed of a substrate 4A and a movable plate 4B. The substrate 4A is a member for supporting the movable plate 4B and supporting it to be slidable. The substrate 4A is a rotating shaft that is coupled to the rotation driving unit 3, and is rotated at a fixed position by being driven by the rotation driving unit 3. A substrate-side sliding surface 4C slidably in contact with the movable plate 4B is formed on the lower side surface of the substrate 4A. This substrate-side sliding surface 4C is formed in a curved shape centering on the center of curvature of the honing target spherical surface S1, that is, the center G. Substrate -8 - 200940250 The side sliding surface 4C is more specifically formed to form a spherical shape (as a part of the spherical surface S2). The movable plate 4B is slidably supported by the substrate 4A, and is a member that slides with respect to the substrate 4A so that the honing shaft 2 is tilted with the center G as a center. On the upper side surface of the movable plate 4B, a movable plate side sliding surface 4D for sliding contact with the substrate side sliding surface 4C of the substrate 4A is formed. In the same manner as the substrate 0 side sliding surface 4C of the substrate 4A, the movable plate side sliding surface 4D has a spherical shape in which the curvature center of the honing target spherical surface, that is, the center G is centered. On the lower side of the movable plate 4B, the honing shaft 2 is integrally fixed. This honing shaft 2 is set such that its axis passes through the aforementioned center of curvature of the honing target spherical surface, that is, the center G. The substrate 4A and the movable plate 4B are joined together by a joining means. This combination means that various items can be used. For example, it can be composed of: a through bolt and a washer. On the substrate 4A and the movable plate 4B, a bolt hole having an inner diameter larger than the diameter of the through bolt is bored, and the substrate 4A and the movable plate 4B are combined to be mutually movable to install a through bolt of a washer having a larger bolt hole. The substrate 4A and the movable plate 4B are bonded to each other. Of course, other combinations of structures can be provided, and all known means can be employed. Further, a tilting mechanism (not shown) is provided in the grinding wheel rotation driving unit 5 for appropriately tilting the rotating shaft. This tilting mechanism is formed such that the honing surface of the spherical honing dish 8 mounted on the honing wheel rotation driving portion 5 is moved along the aforementioned honing target spherical surface S 1 centered on the center G - 200940250 . The specific structure of the tilt mechanism can be employed: all known mechanisms capable of performing such an action. In order to match the curvature of the honing target spherical surface of the honing lens 7, and the difference in the unevenness of the surface, the spherical honing plate 8 is prepared in advance with a plurality of spherical honing stones 8. The various spherical honing stones 8 can be appropriately replaced and mounted to the honing wheel rotation driving portion 5. The spherical honing device 1 having the above structure is used in the following manner. First, the length of the honing shaft 2 is adjusted in accordance with the curvature of the honing target spherical surface S1 of the honing lens 7. That is, the honing shaft 2 is set such that the radius of curvature of the honing target spherical surface S1 of the honed lens 7 and the distance from the center G to the honing surface of the honing lens 7 tend to coincide with each other. length. Then, the substrate-side sliding surface 4C of the support mechanism 4 and the movable-plate-side sliding surface 4D are slid so that the movable plate 4B is moved relative to the substrate 4A, and the angle of the honing shaft 2 is inclined. The inclination angle of the 硏φ grinding shaft 2 is set such that the honed lens 7 is honed in the range of the honing surface that does not completely exceed the spherical honing plate 8 during the running-in. The entire honed surface of 7 can be subjected to a wear-in angle. Further, 'the height of the spherical honing plate 8 is adjusted by the honing wheel rotation driving portion 5' so that the distance from the center G to the honing surface of the spherical honing plate 8 tends to coincide with the radius of curvature of the aforementioned honing target spherical surface S1. . The inclination angle of the spherical honing dish 8 can be set to also serve as the inclination angle of the honing shaft 2-10-200940250. In this state, the honed lens 7 already mounted on the lens fixing jig 10 is set to the spherical surface 硏The grindstone 8 is fitted to the support pin 12 of the honing shaft 2 to the support recess π of the lens fixing jig 1 . In this state, the rotation driving unit 3 and the honing wheel rotation driving unit 5 are operated. Thereby, the honing shaft 2 will be actuated as shown in Figs. 2(A), (b), and (C). Specifically, when the substrate 4A of the support mechanism 4 is rotated by the rotation of the rotary drive unit 3, the movable plate 4B positioned at a position shifted from the substrate 4A of 0 will be centered on the rotation axis of the rotary drive unit 3. Make a revolution. As a result, the honing shaft 2 attached to the movable plate 4 B will rotate with the center G as a base point in a tilted state. Rotation of 90 degrees from Fig. 2 (A) will change to Fig. 2 (B), and rotation of 180 degrees will become 2 (C). However, during this rotation, at the position of the center G, the honing shaft 2 will not be biased and will rotate at this position. As a result, the support pin 12 of the honing shaft 2 rotates Q with the center G as the center. That is, as shown in Fig. 3, the support pin 12 of the honing shaft 2 will be rotated centering on the center G, and the rotation motion is like a pendulum hanging from the center G along the center G Rotate as a circular trajectory as a spherical surface of the center of the sphere. As a result, the honed surface of the honing lens 7 is lapped with the spherical honing stone 8 and rotated along the honing target spherical surface S1. This action is shown in Figure 4. Fig. 4 is a view showing four states in which the honing shaft 2 is rotated by 90 degrees, 180 degrees, 270 degrees, and -11 - 200940250 360 degrees by the rotation driving unit 3. The circle 14 in Fig. 4 is a spherical honing dish 8 which replies to the right rotation. In the circle of Fig. 4, the heart G is used as a center to perform a pendulum motion to rotate the bedding action. Here, since the honing dish rotation driving portion 5 is in a state where the set point is inclined, the honing 15 which makes the pendulum motion with the center G as the center with respect to the rotation 1 4 ' of the spherical honing dish 8 is eccentric. That is, the honed lens 7 revolves at a position that is eccentric. The rotational movement of the spherical honing dish 8 is made with the center G as the center as shown by the circle 15, so that the honed surface of the honed lens 7 is equal and along The honing target spherical surface is subjected to movement while receiving the honing lens 7 as a concave lens. Although the imaginary line of Fig. 1 is shown, the basic operation is the same as above. In this way, the honing surface of the honing lens 7 can be accurately moved by the honing surface S1, and the spheroidal surface S1 can be honed; the surface is maintained at a high sphericity and the honing is performed with high precision to complete the proficiency. It is easy to obtain a high sphericity honing process. In the lens processing process, do not let the lens withstand the local practice. It is very important to improve the precision of the lens spherical surface. The honing device 1 can be used to honing the lens 7. The honing surface 'the grinding target spherical surface S1 moves correctly and continuously' so the lens has a discontinuous phenomenon'. The pressure applied to the lens also remains one: in the fixed position, it is indicated by the medium grinding lens 7: a slight one: the turning motion The circular lens 7 of the round-faced honing dish 8: honing the lens 7 pendulum movement, the pressure, while honing. However, the case of becoming the first is completed along the honing mirror 7 described above. You don't have to ask for it. Partial stress. According to the movement of the ball along the aforementioned cymbal, it is possible to honour the spherical surface with high precision -12 - .200940250. [Modifications] In the above-described embodiment, the substrate-side sliding surface 4C of the substrate 4A of the support mechanism 4 and the movable-plate-side sliding surface 4D of the movable plate 4B are formed in a spherical shape, but the honing may be performed by the aforementioned The center of curvature G of the target spherical surface is formed as a part of the central cylindrical surface. The honing shaft 2 is not limited to a spherical surface as long as it can be inclined with respect to the center G, and may be a cylindrical surface. This situation can also achieve the same effects and effects as described above. Further, although the support pin 12 is provided at the front end of the honing shaft 2, other configurations may be employed as the supporting means. Any structure capable of supporting the honed lens 7 can be employed. BRIEF DESCRIPTION OF THE DRAWINGS Q Fig. 1 is a schematic structural view showing a spherical honing device according to an embodiment of the present invention. Fig. 2 is a schematic view showing the operation of the honing shaft of the spherical honing device according to the embodiment of the present invention. Fig. 3 is a schematic view showing the operation of the spherical honing device according to the embodiment of the present invention when the center G of the honing shaft is used as a reference. Fig. 4 is a view showing the relative movement of the honing lens with respect to the spherical honing dish in accordance with the operation of the honing shaft according to the spherical honing device of the embodiment of the present invention. -13- 200940250 [Explanation of main component symbols] 1 : Spherical honing device 2 : Honing shaft 3 : Rotary drive unit
4 :支承機構 4A :基板 4B :可動板 4C :基板側滑動面 4D :可動側滑動面 5 :硏磨皿旋轉驅動部 7 :被硏磨透鏡 8 :球面硏磨皿 I 0 :透鏡固定夾具 II :支承凹部 1 2 :支承銷 -14-4: support mechanism 4A: substrate 4B: movable plate 4C: substrate side sliding surface 4D: movable side sliding surface 5: honing dish rotation driving portion 7: honed lens 8: spherical honing plate I 0 : lens fixing jig II : Support recess 1 2 : Support pin-14-