1344945 [0001] [0002] [0003] [0004] 094125757 100年04月18日梭正替換頁 發明說明： 【發明所屬之技術領域】 本發明係關於一種玻璃鏡片模造方法及一種玻璃鏡片模 造裝置。 【先前技術】 光學元件的應用繁多，其中以影像產品中最為常見，包 括眼鏡、望遠鏡、相機等產品，其餘光電產品如掃描器 、傳真機、影印機、光碟機等，也需光學元件的搭配， 因此光學鏡片、鏡頭及各類光學元件實為光電產業不可 或缺的零組件。光學產業已經具有百年的歷史，近幾年 藉著數位相機、影像手機及數位影像的應用普及，造就 光學元件的市場呈現蓬勃的發展。 基本上，任何影像輸出輸入裝置幾乎都需要各式的光學 鏡片或鏡頭，包括眼鏡、傳統相機、數位相機、望遠鏡 、顯微鏡、影印機、傳真機、雷射印表機、掃描器、條 碼掃描器、電腦相機、攝影機、保全攝影機、投影機及 影像手機等，其他包括各式光碟機和光通訊元件裡也都 需要光學鏡片。 光學產品若依據各項作用及技術原理來分類，大致上可 分做幾何光學元件、繞射光學元件、干涉光學元件及偏 振光學元件等產品，若以鏡片的形狀分類則大致區分為 球面鏡片、複合鏡片與非球面鏡片等，若以材質區分， 大約可分為玻璃與塑膠兩類。 在鏡片材質的選擇上，在追求成本效益與外觀尺寸等考 量下，大部份的光電產品會同時運用玻璃鏡片與塑膠鏡 表單編號A0101 第3頁/共14頁 1003130931-0 [0005] 1344945 ___ 100年04月18日按正替換頁’ 片，雖然塑夥鏡片具有量產成本低、重量輕等優點，並 有逐漸取代玻璃鏡片的趨勢，但受到塑膠材質有先天致 命的缺點影響，如熱膨脹、易吸水、不耐有機溶劑、光 學系數範圍狹窄等缺點，仍難以取代玻璃鏡片在部分講 求光學特性產品的應用。由於玻璃的透光性能極佳，長 久以來就是光學產品的重要原材料。在非球面玻璃鏡片 的製造方面’大體可分為研磨玻璃鏡片及模造玻璃鏡片 兩種。研磨主要適用於少量鏡片的生產，而大批量生產 仍以模造方法居多。 [0006]如第一圖所示’模造玻璃鏡片是利用玻璃隨溫度升高黏 滯度降低之特性’首先’將玻璃坯料13製成截面為橢圓 形的玻璃預型體lb ;然後，再將玻璃預型體ib置於精密 加工成形的模具内，在適當的環境氣氛下升溫至玻璃軟 化點附近，藉由模仁表面施壓使玻璃變形，轉造模仁形 狀，形成玻璃鏡片lc的形狀；最後，將已成形的玻璃鏡 • 片1c冷卻後去除壓力、分模，取出成品。由於玻璃坯料 la與最後需獲得的玻璃鏡片ic之間的形狀差異較大，故 通常會先將玻璃坯料la製成與玻璃鏡片lc形狀較為接近 的玻璃預型體lb，然後再將玻璃預型體lb加工成玻璃鏡 片1 c的形狀。 [〇〇〇7]然而，在將玻璃預成型體lb放入模仁中加工成玻璃鏡片 lc的過程中，橢球形的玻璃預成型體lb易出現放置歪斜 的情況，如第二圖中所示。此時，加工成的玻璃鏡片品 質受損’且不良品出現概率高。 【發明内容】 094125757 表單編號A0101 第4頁/共14頁 1003130931-0 1^44945 « I [0008] [0009] [0010] [0011] [0012] 094125757 100年04月18日接正替換頁 有繁於此，有必要提供一種成型品質高之玻璃鏡片模造 方法及一種使用該方法模造玻璃鏡片之裝置。 —種玻璃鏡片模造方法’包括以下步驟：將玻璃原料製 成特定形狀之預成型體；將該預成型體放於成型模具之 下模仁上；提供〆可與該下模仁構成較該預成型體大之 容置空間之夾具與成型下模仁共同收容該預成型體；使 該夾具與成型下模仁攜上述預成型體共同繞該成型了模 仁之成型面之軸線旋轉；將成型模具之成型上模仁壓下 與上述成型下模仁合模以成型玻璃鏡片。 一種玻璃鏡片模造裝置’包括一成型模具，該成型模具 包括一上模仁、一下模仁，該下模仁用於承載一預成型 體，該上模仁與下模仁一同將該預成型體成型為玻璃鏡 片之形狀，其改良在於：該模造玻璃裝置還包括一可高 逮旋轉之轉台及一夾具，上述下模仁固定於該轉台上， 該轉台之旋轉軸與模仁之成型表面之軸線重合，該夾具 可與下模仁一同構成一容置預成型體之空間。 與習知技術相比’所述玻璃鏡片模造方法以旋轉的方式 ’利用預成型體自身的離心、力作絲實現糾正預成型體 放置於成型下模仁上時發生歪斜的現象，從而能確保為 其後成型步驟模壓坡璃鏡片時的準確性。 【實施方式】 模造玻璃鏡片為利用玻璃在高溫下軟化，以精密模具壓 製成鏡片的技術。為克服在模造玻璃鏡片時，預成型體 放置歪斜對鏡片成型品質所造成的影響，本發明採用高 迷旋轉離心的方式來解決上述問題。 表單編號A0101 笛口 1003130931-0 [0013] 如第- 1100年04月18日修正替换頁， 造方’其為本發明—較佳實施例之玻璃鏡片模 )L之不思圖，本方法中玻璃材料以二氧化矽（Si〇2 "人（Ba0)及二氧化二硼（B2〇3)的混合物為原 '’該坡填鏡片模造方法包括若干工步，第一工步A為玻 、'、料置入階段，第二工步B為預成型階段，第三工步C 為迴轉階段’第四工步。為成型階段。 [0014] νΑ中，球形玻璃坯料1〇a被置入預成型模具 之預成型下模仁12上，並隨同該預成型下模仁12一起 熱至約640 C。在第二工步，預成型模具1〇之一預 成型上模仁14在一預成型引導件16的引導下壓下，已加 熱的玻璃㈣心純職虹壯14與誠訂模仁12 持續擠壓的情況下’随成型上模彳：14_成型下模仁 12的成型面雜變化，形成蚊形狀（如财所示之橢 球形）之預成型體10b。在第三工步W，加工成的預成 i體10b被置入成型模具2〇之一成型下模仁22上，此時一 成型夾具24從上方壓下，並與成型下模仁22構成一閉合 空間26 »該閉合空間26較預成型體1〇b大，故預成搜體 l〇b可在該閉合空間26内移動。待央具24與成型下模仁 22構成閉合空’後’該夾具24與成型下模仁22攜同其 内之預成型體l〇b繞成型下模仁22成型表面之轴線高速旋 轉。此時’在離心力的作用下，密閉空間26内的預成型 體10b將調整其在成型下模仁22上的位置，並最後達到與 預成型體i〇b的軸線與成型下模仁22的成型表面的軸線重 合’即預成型體i〇b與成型下模仁22成型表面同袖。待成 型下模仁22與其上之預成型體1〇b完全靜止後，進入第四 094125757 表單編號A0101 第6頁/共14頁 1003130931-0 1344945 ---- 100年04月18日梭正 工步。在第四工步D中，預型體10b將跟成型下模仁22分 別加熱至玻璃軟化點110〇°C附近的溫度，成型模具20之 成型上模仁28在一成型引導件29的引導下壓下，並對持 • 續加壓將成型下模仁22溫度降至玻璃化溫度即450°C之下 ，則預成型體10b被擠壓成玻璃鏡片10c之形狀。當成型 模具20溫度降至玻璃化溫度以下時，玻璃鏡片10c定形之 後便可移去成型上模仁28對玻璃鏡片10c去壓，並快速降 溫至300°C左右。取出後的玻璃鏡片10c成品可再進行退 火處理，以消除内應力。 [0015] 模造用的玻璃，應選用低軟化點、低色散值、高折射率 的玻璃。模造步驟開始之前，一般須先將玻璃做成特定 形狀的預成型體，預成型體的重量誤差需控制在〇. 5%之 内，以確保成型後鏡片厚度。預成型體在製造時便要有 光學等級的表面，通常要求粗糙度需小於一定數值。所 以，在上述第三工步C之前可採用冷拋光（coldpolishing) 或火拋光 （fire-polishing) 等方式對預 成型體進行表面處理，以確保成品的光學特性。 [0016] 上述方法以二氧化矽（Si02)、氧化钡（BaO)及三氧化 二硼（B203 )混合材料為例說明本發明玻璃鏡片模造方 法，該方法可根據原料的不同而改變各個步驟中的預定 溫度。 [0017] 如第四圖所示，為實現上述迴轉過程，所述之玻璃鏡片 模造裝置100包括一轉台30，其用於承載並固定上述成型 模具20，該轉台30之轉軸與成型模具20之成型下模仁22 之成型表面之軸線重合。同時，玻璃鏡片模造裝置100還 094125757 表單编號A0101 第7頁/共14頁 1003130931-0 1344945 /ι± 一 100年04月18日俊正替換頁· ，該成型炎具24用於與^^ ==成型體_密閉空間26,該密閉· 而較預成&體1Gb大，以使預成型體 %目t & .、n 趙1〇b在該密閉空間26 時1成Lr間。在成型模具2°隨轉台3◦-同轉動 、24隨之1轉動轉台30可通過-驅 動馬達灘制其高輕轉，其啟缺停 圖未示）控制。 ㈣电路（ [0018] 上述玻璃鏡片模造方法，採用成型模具2G之成型下模仁 22攜同放置於其上之預成型體1〇卜同高速旋轉的方式， 利用預成魏lGb自身的離心力作用來實現糾正預成型體 1〇b放置於成型下模仁22上時發生科的現象，從而能確 保為其後成型步騾模壓玻璃鏡片時的準確性。 [0019] 綜上所述，本發明符合發明專利要件，爰依法提出專利 申凊。惟，以上所述者僅為本發明之較佳實施例，舉凡 熟悉本案技藝之人士，在依本案發明精神所作之等效修 飾或變化，皆應包含於以下之申請專利範圍内。 【圖式簡單說明】 [0020] [0021] [0022] [0023] [0024] 第一圖係習知之模造玻璃鏡片步驟之示意圖β 第二圖係玻璃預成型體出現放置歪斜時之示意圖。 第三圖係本發明之玻璃鏡片模造方法之示意圖。 第四圖係本發明之玻璃鏡片模造裝置之示意圖。 【主要元件符號說明】 預成型模具：10 094125757 表單編號Α0101 第8頁/共14頁 1003130931-0 1344945 [0025] 玻璃这料. 10a [0026] 預成型體： 10b [0027] 玻璃鏡片： 10c [0028] 預成型下模仁：12 [0029] 預成型上模仁：14 [0030] 預成型引導件：16 [0031] 成型模具： 20 [0032] 成型下模仁 ：22 [0033] 成型央具： 24 [0034] 密閉空間： 26 [0035] 成型上模仁 ：28 [0036] 成型引導件 ：29 [0037] 轉台：30 [0038] 驅動馬達： 40 [0039] 玻璃鏡片模造裝置：100 094125757 表單編號A0101 第9頁/共14頁 100年04月18日核正替換頁 1003130931-0BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass lens molding method and a glass lens molding apparatus. [Prior Art] There are many applications of optical components, among which the most common in image products, including glasses, telescopes, cameras, etc., and other optoelectronic products such as scanners, fax machines, photocopiers, CD players, etc., also need optical components Therefore, optical lenses, lenses and various optical components are indispensable components of the optoelectronic industry. The optical industry has a history of 100 years. In recent years, the market for optical components has flourished through the popularization of digital cameras, video phones and digital imaging applications. Basically, almost any image output input device requires a variety of optical lenses or lenses, including glasses, conventional cameras, digital cameras, telescopes, microscopes, photocopiers, fax machines, laser printers, scanners, and bar code scanners. , computer cameras, cameras, security cameras, projectors and video phones, etc., including optical lenses are also required in all types of optical drives and optical communication components. Optical products, if classified according to various functions and technical principles, can be roughly classified into geometric optical components, diffractive optical components, interference optical components, and polarizing optical components. If the shape of the lens is classified, it is roughly classified into a spherical lens. Composite lenses and aspherical lenses, etc., can be divided into glass and plastic if they are distinguished by materials. In the choice of lens materials, in the pursuit of cost-effectiveness and appearance size, most of the optoelectronic products will use glass lenses and plastic mirrors at the same time. Form No. A0101 Page 3 of 14 Page 1003130931-0 [0005] 1344945 ___ On April 18th, 100, according to the positive replacement page, although the plastic lens has the advantages of low production cost and light weight, and has a tendency to gradually replace the glass lens, it is affected by the inherent fatal defects of the plastic material, such as thermal expansion. It is easy to absorb water, is not resistant to organic solvents, and has a narrow range of optical coefficients. It is still difficult to replace the application of glass lenses in some optical properties. Due to its excellent light transmission properties, glass has long been an important raw material for optical products. In the manufacture of aspherical glass lenses, there are generally two types of abrasive glass lenses and molded glass lenses. Grinding is mainly used for the production of a small number of lenses, while mass production is still dominated by molding methods. [0006] As shown in the first figure, 'molded glass lens is characterized by decreasing the viscosity of the glass with increasing temperature. 'Firstly' the glass blank 13 is made into a glass preform lb having an elliptical cross section; then, The glass preform ib is placed in a precision-molded mold, and is heated to a temperature near the softening point of the glass in an appropriate atmosphere, and the glass is deformed by pressing the surface of the mold to transform the shape of the mold to form the shape of the glass lens lc. Finally, the formed glass mirror 1c is cooled, the pressure is removed, the mold is removed, and the finished product is taken out. Since the shape difference between the glass blank la and the glass lens ic to be finally obtained is large, the glass blank la is usually first made into a glass preform lb which is relatively close to the shape of the glass lens lc, and then the glass preform is prepared. The body lb is processed into the shape of the glass lens 1 c. [〇〇〇7] However, in the process of processing the glass preform lb into the mold to form the glass lens lc, the ellipsoidal glass preform lb is liable to be placed in a skewed state, as shown in the second figure. Show. At this time, the quality of the processed glass lens is impaired, and the probability of occurrence of defective products is high. SUMMARY OF THE INVENTION 094125757 Form No. A0101 Page 4 of 14 1003130931-0 1^44945 « I [0008] [0009] [0011] [0012] 094125757 April 18, 100, the replacement page has In this case, it is necessary to provide a glass lens molding method with high molding quality and a device for molding glass lenses using the method. - a glass lens molding method 'includes the steps of: forming a glass material into a preform of a specific shape; placing the preform on a mold core under the molding die; providing a crucible with the lower mold core The jig of the large space of the molded body and the molded lower mold coexist the preform; the jig and the molded lower mold are carried together with the preform to rotate around the axis of the molding surface of the molded mold; The molded upper mold is pressed and molded with the above-mentioned molded lower mold to form a glass lens. A glass lens molding apparatus includes a molding die including an upper mold core and a lower mold core for carrying a preform, the upper mold core and the lower mold core together with the preform Formed into the shape of a glass lens, the improvement is that the mold glass device further comprises a rotating table capable of high rotation and a clamp, wherein the lower mold core is fixed on the turntable, and the rotating shaft of the turntable and the axis of the molding surface of the mold core In the case of coincidence, the jig can be combined with the lower mold to form a space for accommodating the preform. Compared with the prior art, the glass lens molding method uses a centrifugal method and a centrifugal force of the preform itself to correct the occurrence of skew when the preform is placed on the molded lower mold, thereby ensuring The subsequent molding step is used to mold the accuracy of the glass lens. [Embodiment] A molded glass lens is a technique in which a glass is softened at a high temperature and pressed into a lens by a precision mold. In order to overcome the influence of the pre-formed body placement skew on the molding quality of the lens when molding the glass lens, the present invention employs a high-speed rotary centrifugation method to solve the above problems. Form No. A0101 笛口1003130931-0 [0013] As a modification of the replacement page on April 18, 1100, the manufacturer's invention is a glass lens mold of the preferred embodiment, which is inconsequential, in the method The glass material is based on a mixture of cerium oxide (Si〇2 "human (Ba0) and boron dioxide (B2〇3)''. The method of molding the slope lens comprises several steps, the first step A is glass , ', material placement stage, the second step B is the preforming stage, the third step C is the turning stage 'the fourth step. It is the forming stage. [0014] In the νΑ, the spherical glass blank 1〇a is placed The pre-formed lower mold core 12 is placed in a pre-formed mold and heated to about 640 C along with the preformed lower mold core 12. In the second step, one of the preformed molds 1 is preformed in the upper mold core 14 Under the guidance of the preformed guide 16 under the guidance of the heated glass (four) heart pure job Hong Zhuang 14 and Cheng Zhuanren 12 continuous extrusion, with the molding of the upper mold: 14_ molding of the lower mold core 12 The surface is mixed to form a preform 10b of a mosquito shape (such as the ellipsoid shown in Fig.). In the third step W, the processed preform 10b is processed. One of the molding dies 2 is placed on the lower mold core 22, at which time a molding jig 24 is pressed from above and forms a closed space with the molded lower mold core 22. The closed space 26 is larger than the preform 1b Large, so the pre-made body l〇b can move within the closed space 26. The fixture 24 and the forming lower mold core 22 constitute a closed empty 'after' the fixture 24 and the molding lower mold core 22 carry the same The molded body 10b is rotated at a high speed around the axis of the molding surface of the lower mold core 22. At this time, under the action of centrifugal force, the preform 10b in the sealed space 26 will adjust its position on the molded lower mold core 22, And finally, it coincides with the axis of the preform i〇b and the axis of the molding surface of the molding lower mold core 22, that is, the preform body i〇b and the molding surface of the molding lower mold core 22 are sleeved together. After the preform 1b is completely still, enter the fourth 094125757 Form No. A0101 Page 6 / Total 14 Page 1003130931-0 1344945 ---- April 18, 100, the shuttle is working. In the fourth step In D, the preform 10b is heated separately from the molded lower mold core 22 to a temperature near the glass softening point of 110 ° C. The molded upper mold core 28 of the mold 20 is pressed under the guidance of the molding guide 29, and is subjected to continuous pressurization to lower the temperature of the molded lower mold core 22 to a glass transition temperature of 450 ° C. The body 10b is extruded into the shape of the glass lens 10c. When the temperature of the molding die 20 falls below the glass transition temperature, the glass lens 10c can be shaped to remove the molded upper mold 28 and depressurize the glass lens 10c, and rapidly cool down to Around 300 ° C. The finished glass lens 10c can be further annealed to eliminate internal stress. [0015] For the glass for molding, a glass having a low softening point, a low dispersion value, and a high refractive index should be used. Before the molding step begins, it is generally necessary to first form the glass into a preform of a specific shape. The weight error of the preform should be controlled within 5% to ensure the thickness of the lens after molding. Preforms are manufactured with an optical grade surface and typically require roughness to be less than a certain value. Therefore, the preform may be surface-treated by coldpolishing or fire-polishing before the third step C to ensure the optical properties of the finished product. [0016] The above method illustrates a method for molding a glass lens of the present invention by using a mixed material of cerium oxide (SiO 2 ), cerium oxide (BaO) and boron trioxide (B203 ), and the method can be changed in each step according to different raw materials. The predetermined temperature. [0017] As shown in the fourth figure, in order to realize the above-described turning process, the glass lens molding apparatus 100 includes a turntable 30 for carrying and fixing the forming mold 20, the rotating shaft of the turntable 30 and the forming mold 20 The axes of the molding surfaces of the molded lower mold cores 22 coincide. At the same time, the glass lens molding device 100 is also 094125757 Form No. A0101 Page 7 / Total 14 pages 1003130931-0 1344945 /ι± A 100-year-old April 18th replacement page ·, the molding device 24 is used with ^^ = = molded body _ confined space 26, which is larger than the pre-formed & 1Gb, so that the preform % t & , n Zhao 1〇b is between 1 and Lr in the sealed space 26. In the molding die 2° with the turntable 3◦-co-rotating, 24 followed by 1 turning the turntable 30 can be controlled by driving the motorized beach to be high and light, and its opening and closing diagram is not shown). (4) Circuit ([0018] The above-mentioned glass lens molding method uses the molding die 2G to form the lower mold core 22 and the preform body 1 placed thereon to rotate at a high speed, and utilizes the centrifugal force of the pre-formed Wei lGb itself. To achieve the phenomenon that the correction occurs when the preform 1b is placed on the molded lower mold core 22, so that the accuracy of molding the glass lens for the post-forming step can be ensured. [0019] In summary, the present invention In accordance with the requirements of the invention patent, the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and those who are familiar with the skill of the present invention should make equivalent modifications or changes in accordance with the spirit of the invention. [0024] [0024] [0024] [0024] [0024] [0024] [0024] [0024] The first figure is a schematic diagram of a conventional method of molding a glass lens. The second picture is a glass preform. The schematic diagram of the glass lens molding method of the present invention is shown in the third figure. The fourth figure is a schematic diagram of the glass lens molding apparatus of the present invention. Pre-formed mold: 10 094125757 Form No. 101 0101 Page 8 / Total 14 pages 1003130931-0 1344945 [0025] Glass material. 10a [0026] Preform: 10b [0027] Glass lens: 10c [0028] Preformed lower mold Ren: 12 [0029] Preformed upper mold: 14 [0030] Preformed guide: 16 [0031] Molding mold: 20 [0032] Forming lower mold: 22 [0033] Forming implement: 24 [0034] Sealed Space: 26 [0035] Forming upper mold: 28 [0036] Forming guide: 29 [0037] Turntable: 30 [0038] Drive motor: 40 [0039] Glass lens molding apparatus: 100 094125757 Form No. A0101 Page 9 / A total of 14 pages, 100 years, April 18, nuclear replacement page 1003130931-0