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099^07^ 22B 六、發明說明： 【發明所屬之技術領域】 [麵]本發明係關於一種非球面模造玻璃製造方法，尤其係關 於一種具奈米級表面之非球面模造玻璃製造方法。 【先前技術】 [0002] 隨著科技之不斷發展，具攝像功能之攜帶式電子裝置越 來越受到消費者之喜愛，如數位相機、攝相機等電子產 品已成為當今消費之熱點，而於該類產品中，用於成像 之鏡片亦不斷發展’以滿足不同消費者之需求。 [0003] 習知技術中’鏡片一般係採用玻璃材料，起初因製程之 影響，只能加工球面玻璃鏡片，然隨著科技之發展，現 可通過模造方法加工出各種非球面玻璃。但其模造後之 非球面玻璃表面粗链度難以滿足要求，故尚需表面拋光 處理，因表面為非球面表面，抛光加工較不易。 [0004] 另一習知板造玻璃技術中，係疙玻嗓表面鍍制一層奈米 二氧化鈦Ti〇2催化薄膜，因該材料粒子本身為奈米級， 因此表面具有很好之工藝特性’惟’因非球面玻璃表面 凹凸不平，鍍膜工藝較不易控制，從而影響非球面表面 之精度。 [_ _鑒於此，提供一種表面具奈米級表面之非球面模造玻 璃製造方法實為必要。 【發明内容】 [0006]本發明之目的在於提供一種具奈米級表面之非球面模造 玻璃製造方法。 093135563 表單編號A0101 第4頁/共15頁 0993264001-0 1330619 [0007] [0008] [0009] [0010] [0011] [0012] [0013] [0014] 099年07月22日梭正替換頁] 本發明公開造料製造杨，_造玻璃製造方 法包括：-種非球面模造玻璃之製造方法，其模造過程 如下： 將溫度緩慢升到成形溫度η，該成形溫度'高於玻璃轉 變溫度Tg25-45°C，壓力為常壓，模仁位置為初始位置； 於成形溫度下保溫10-15秒； 壓力升到第一壓力Ρ3，該第一壓力範圍為200_400牛頓， 於成形溫度下保溫保壓5秒，模彳二位置緩慢減小； 壓力升到第二壓力Ρ2 ’該第二壓力範圍為500_7〇〇牛頓， 於成形溫度下保溫保壓10秒，模仁位置緩慢減小； 壓力升到成形壓力P1，該成形壓力範圍為700-900牛頓， 於成形溫度下保溫保壓45秒，模仁位置不變； 壓力降到冷卻壓力P4，該冷卻壓力範圍為300-500牛頓， 進行冷卻15秒，壓力不變，溫度降到冷卻溫度T3，該冷 卻溫度範圍低於玻璃轉變溫度Tg5-25°c ’模仁位置緩慢 增加。 本具奈米級表面之非球面模造玻璃製造方法同時採用溫 度、壓力、冷卻之反饋系統，可'改善模造非球面鏡片表 面之Ra值，使模造表面達到奈米級精度’精度可達到1奈 米到8奈米之間，通過冷卻系統中採用惰性氣體，可使玻 璃模胚與離形膜表面燕損傷分離’從而延長了上下板仁 之壽命。該非球面模造玻璃製造方Ή減少㈣位置之 改變而造成玻璃模胚内之熱_，從而使模造後之破璃 093135563 表單編號Α0101 第5頁/共15頁 0993264001-0 1330619 [0015] 099年07月22日倐正替換頁 模胚有較好之形狀精度。 【實施方式】 本發明為一種具奈米級表面之非球面模造玻璃製造方法 ’以下結合具體圖示來描述該製造方法。 [0016] 請參閱第一圖，縱座標φ(α, Cp，u)函數表示祚球面 模造玻璃之物理、機械性能特性，其中物理參數·· α表 示熱膨脹係數，Cp表示熱容量，u表示玻璃粘度；橫座標 • 表示溫度，該圖曲線中T,表示成形溫度，T9表示轉換溫 度’ Tg表示玻璃化轉變溫度，Τ3表示冷卻溫度，於玻璃 模造過程中，Tg點溫度於模造玻璃中較為重要。模造玻 璃之材質不同’其玻璃化轉變溫度Tg相應不同。通常確 定Tg溫度後，可設定高於Tg溫度25-45°C為成形溫度， 高於了25-15艺為1'2溫度，低於Tg溫度5-25°C為冷卻溫度 0 [0017] 依據第一圖之玻璃物理性能與琿庹孓關係，於模造過程 中’同時對溫度 '壓力、模仁体置進行控制，以下對控 • 制過程結合圖示加以說明。· [0018] 請參見第二圖，本實施例中，取玻璃化轉變溫度Tg為5〇6 °C，成形溫度!^優選範圍為30-35t，最佳值為540。(：。 該第二圖中，縱座標表示溫度，橫座標表示時間。於溫 093135563 度控制過程中，依時間對溫度按第二圖中之曲線加以控 制。先將溫度緩慢加熱到成形溫度'，於該'溫度下， 於、與％時間段内，保溫1〇_15秒，之後於丈 時間内 2 5 ，約60秒情況下，高溫擠壓，其麼力施加過程參見第三 圖，然後於、到%時間段内，於15秒中將溫度從τ緩慢 表單编號Α0101 第6百/共15苜 1 m b η κ 0993264001-0 1330619 099年07月22日梭正替換頁 冷卻到T2，T2優選範圍為10-15°C，再緩慢冷卻到冷卻溫 度T3 ’冷卻溫度優選範圍為10-20°C，最佳值為49(rc。 [0019] 請參見第三圖’其中縱座標表示壓力，橫座標表示時間 。首先’壓力控制從1：2時間開始，增加壓力，使壓力達 到第一壓力P3 ’其為200-400牛頓，優選為300牛頓，同 時於該壓力下’從1：2到1：3時間段内，保壓5秒，再增加壓 力到第二壓力P2，其為500-700牛頓，優選為600牛頓， 於該壓力下，從t3到t4時間段内，保壓1 〇秒，然後將壓 力升到Pi，該壓力？丨為成形壓力，其值為8〇〇牛頓，於該 壓力下，從1：4到1：5時間段内，保壓45秒，之後再瞬間降 壓到P〗’其為300-500牛頓’優選為400牛頓，從t到t 5 6 時間段内，於恆壓Ρ4Τ，在15秒中對模造玻璃進行冷卻 [0020]請參見第四圖，其中縱座標表示模仁位置，橫座標表示 時間t。於溫度和壓力控制過程中，模仁位置於壓力作用 下，位置會發生改變，該位置可為玻璃預形體或模仁位 置。首先，模仁位置具一初始值z，之後從t到七時間 u 2 4 ，15秒時間内，依第二圖和第三圖對溫度和壓力進行控 制，此時模仁位置從Z〇變化到Z! ’再從t到七時間内， 間隔為45秒過程中，模仁位置不發生改變，冷卻過程中 ，因此時玻璃預型體與模仁之間有一定黏性，為避免破 壞玻璃預型體表面之精度，模仁和玻璃預型體需緩慢分 開，因此從、到1；時間段内，ζν緩慢降低到Z ^ ^ 0 [0021] 為實現非球面模造玻璃之製造方法，需要相應之裝置來 完成。請參見第五圖，該模造玻璃之裝置包括上模仁1〇 093135563 表單編號A0101 第7頁/共15頁 0993264001-0 1330619 __ 099年07月22日按正替换頁 • 、下模仁20，上模仁10位於下模仁20上部，上模仁10和 下模仁20之間設有玻璃預型體30。為實現溫度、壓力及 冷卻之自動控制，該模造玻璃之裝置進一步包括熱反饋 系統、冷卻系統及壓力系統，其分別與模造玻璃裝置之 主控制系統相連接。 [0022] 該熱反饋系統可實現溫度自動控制，其包括複數個紅外 加熱器（Infrared radiation heater)40，該紅外加 熱器設置於上模仁10、下模仁20周圍，為使熱量均勻分 ^ 布，可將紅外加熱器40對稱設置於上模仁10與下模仁20 頂部兩側，便於對玻璃預型體30之加熱。該紅外加熱器 40可瞬間加熱到所需之溫度。為測量模仁内玻璃預型體 30是否達到所需之溫度，需要於玻璃預型體30附近設置 一熱電偶（thermal couple)50。常見之熱電偶50通常 有鐵銅合金組成，其對溫度變化較為敏感，而且該熱電 偶50可將所測量之溫度傳遞給主控制系統。 [0023] 熱反饋系統流程參見第六圖，首先由熱電偶50測量溫度 # ，判斷溫度是否達到成形溫度'，如果溫度符合要求， 模造玻璃之裝置進行模造，如果溫度未達到要求，熱反 饋系統將通過主控制系統指示紅外加熱器4 0繼續加熱， 以使溫度符合預定要求。該熱反饋系統主要對成形溫度 Τι加以控制，其為一循環過程。 [0024] 冷卻系統可對冷卻溫度加以控制，冷卻系統由冷卻裝置 60來完成。該冷卻裝置60位於上模仁10與下模仁20之一 側，其包括：冷卻氣體62，流量計（mass flow rate controller)64。其中該冷卻氣體62為氮氣，可以理解 093135563 表單編號A0101 第8頁/共15頁 0993264001-0 1330619 099年07月22日梭正^^頁1 ，該冷卻氣體62亦可為其他惰性氣體如氬氣，氦氣等。 該流量計64用以控制冷卻氣體62之流量。為使玻璃預型 體30冷卻均勻，冷確氣體62均勻分布於玻璃預型體周圍 °於高溫高壓過程中’冷卻氣體62採用氮氣等惰性氣體 [0025] ’可避免上模仁10和下模仁20表面之離型膜被氧化，可 延長上模仁10和下模仁20之壽命。 冷卻系統流程參見第七圖’首先由熱電偶5〇測量玻璃預 型體30之冷卻溫度T3是否達到490°C，如果滿足要求，則 冷卻過程完成；如果未達到要求，將該信息反饋給主控 制系統，藉由調節流量計64來改變冷卻氣體62之流量， 以達到所需之冷卻溫度。 [0026] 壓力系統可對壓力進行控制，該模壓系統包括：模壓機 70，該模壓機70從上模仁1〇施壓，其施壓方式可為氣壓 方式，亦可採用電動加壓，油壓或彈簧壓等。本實施例 中，模壓機70通過氣體對上模仁施壓，該模壓機7〇可 準確測量施壓之載荷，在施壓過程中，為控制模仁不同 位置之施壓情況，在模仁上還需設定一位置感應器，該 位置感應器為一位置感應器，該位置感應器可準媒測量 模仁之位置，被測量後，再將所測量之參數傳遞給主控 制系統，以便完成自動調節上下模仁之位置。099^07^22B VI. Description of the Invention: [Technical Field of the Invention] [Face] The present invention relates to a method for producing an aspherical molded glass, and more particularly to a method for producing an aspherical molded glass having a nano-scale surface. [Prior Art] [0002] With the continuous development of technology, portable electronic devices with camera functions are more and more popular among consumers. Electronic products such as digital cameras and cameras have become hotspots in today's consumption. Among the products, the lenses used for imaging are also constantly evolving to meet the needs of different consumers. [0003] In the prior art, the lens is generally made of a glass material. At first, due to the influence of the process, only spherical glass lenses can be processed. However, with the development of technology, various aspherical glasses can be processed by a molding method. However, the surface of the aspherical glass after the molding is difficult to meet the requirements, so the surface polishing treatment is required, and the surface is an aspherical surface, and the polishing process is not easy. [0004] In another conventional tempering technique, a surface of a ruthenium-glass ruthenium is coated with a nano-titanium dioxide Ti〇2 catalytic film. Since the material itself is nano-scale, the surface has good process characteristics. 'Because the surface of the aspherical glass is uneven, the coating process is less controllable, thus affecting the accuracy of the aspherical surface. [_ _ In view of this, it is necessary to provide a method for producing an aspherical molded glass having a surface having a nanometer surface. SUMMARY OF THE INVENTION [0006] An object of the present invention is to provide a method for producing an aspherical molded glass having a nano-scale surface. 093135563 Form No. A0101 Page 4 / Total 15 Page 0993264001-0 1330619 [0007] [0009] [0010] [0012] [0014] [0014] July 22, 099 shuttle replacement page] The invention discloses a method for manufacturing Yang, and the method for manufacturing glass comprises: a method for manufacturing aspherical molded glass, the molding process is as follows: The temperature is slowly raised to a forming temperature η, which is higher than the glass transition temperature Tg25- 45 ° C, the pressure is normal pressure, the position of the mold is the initial position; the temperature is kept at the forming temperature for 10-15 seconds; the pressure is raised to the first pressure Ρ 3, the first pressure range is 200-400 Newtons, and the holding pressure is maintained at the forming temperature. 5 seconds, the second position of the die is slowly reduced; the pressure rises to the second pressure Ρ 2 ' The second pressure range is 500_7 〇〇 Newton, the pressure is kept at the forming temperature for 10 seconds, the position of the mold is slowly reduced; the pressure rises to Forming pressure P1, the forming pressure range is 700-900 Newtons, holding pressure for 45 seconds at the forming temperature, the position of the mold is unchanged; the pressure is lowered to the cooling pressure P4, and the cooling pressure ranges from 300 to 500 Newtons, and is cooled 15 Seconds, the pressure is constant, the temperature drops to cooling At a temperature T3, the cooling temperature range is lower than the glass transition temperature Tg5-25°c', and the position of the mold is slowly increased. The nano-surface-formed aspherical mold glass manufacturing method adopts a temperature, pressure, and cooling feedback system to improve the Ra value of the surface of the molded aspherical lens, so that the surface of the molded surface reaches the nanometer precision, and the precision can reach 1 nanometer. Between meters and 8 nm, the use of inert gas in the cooling system can separate the glass mold from the surface of the release film, thus prolonging the life of the upper and lower plates. The aspherical molded glass manufacturing method reduces the (four) positional change and causes the heat in the glass mold to be _, so that the glass after the molding is 093135563. Form No. 1010101 Page 5/15 pages 0993264001-0 1330619 [0015] 099 07 On the 22nd of the month, the replacement of the page mold has better shape accuracy. [Embodiment] The present invention is a method for producing aspherical molded glass having a nano-scale surface. The manufacturing method will be described below in conjunction with a specific illustration. [0016] Referring to the first figure, the ordinate φ(α, Cp, u) function represents the physical and mechanical properties of the spheroidal molded glass, wherein the physical parameter·· α represents the coefficient of thermal expansion, Cp represents the heat capacity, and u represents the viscosity of the glass. ; abscissa • indicates temperature, T in the graph indicates the forming temperature, T9 indicates the switching temperature 'Tg indicates the glass transition temperature, and Τ3 indicates the cooling temperature. During the glass molding process, the Tg point temperature is important in the molded glass. The material of the molded glass is different, and its glass transition temperature Tg is different. Usually after determining the Tg temperature, it can be set to a temperature higher than the Tg temperature of 25-45 ° C, which is higher than 25-15 art for 1'2 temperature, and lower than Tg temperature of 5-25 ° C for cooling temperature 0 [0017] According to the relationship between the physical properties of the glass and the crucible in the first figure, the pressure at the same time and the body of the mold are controlled during the molding process. The following describes the control system in combination with the diagram. [0018] Please refer to the second figure. In the present embodiment, the glass transition temperature Tg is 5〇6 °C, and the forming temperature is preferably 30-35t, and the optimum value is 540. (: In the second figure, the ordinate indicates temperature and the abscissa indicates time. During the temperature control process of 093135563 degrees, the temperature is controlled according to the curve in the second figure according to time. The temperature is slowly heated to the forming temperature first. At the 'temperature, during and after the % time period, the temperature is kept for 1 〇 _ 15 seconds, then in the case of 2 5 , about 60 seconds, the high temperature extrusion, the force application process is shown in the third figure. Then, in the % time period, the temperature is τ from the slow form number in 15 seconds Α 0101 6th / 15 苜 1 mb η κ 0993264001-0 1330619 0, 2007, September 22, the shuttle replacement page is cooled to T2 , T2 is preferably in the range of 10-15 ° C, and then slowly cooled to the cooling temperature T3 'The cooling temperature is preferably in the range of 10-20 ° C, and the optimum value is 49 (rc. [0019] See the third figure where the ordinate Indicates pressure, and the abscissa indicates time. First, 'pressure control starts from 1:2, increasing the pressure so that the pressure reaches the first pressure P3' which is 200-400 Newtons, preferably 300 Newtons, and at the same time 'from 1 : 2 to 1:3 period, hold pressure for 5 seconds, then increase the pressure to the second Pressure P2, which is 500-700 Newtons, preferably 600 Newtons, at which pressure is maintained for 1 sec from t3 to t4, and then the pressure is raised to Pi, which is the forming pressure, The value is 8 Newtons. Under this pressure, the pressure is kept for 45 seconds from 1:4 to 1:5, and then the pressure is reduced to P〗, which is 300-500 Newtons, preferably 400 Newtons. For the period from t to t 5 6 , at a constant pressure of 4 Τ, the molded glass is cooled in 15 seconds [0020] Please refer to the fourth figure, wherein the ordinate indicates the position of the mold, and the abscissa indicates the time t. During the pressure control process, the position of the mold is changed under pressure, and the position may be the position of the glass preform or the mold. First, the position of the mold has an initial value z, and then from t to seven times u 2 4 In 15 seconds, according to the second and third figures, the temperature and pressure are controlled. At this time, the position of the mold is changed from Z〇 to Z! 'From t to seven, the interval is 45 seconds. The position of the kernel does not change, during the cooling process, so there is a certain viscosity between the glass preform and the mold core. In order to avoid the damage of the surface of the glass preform, the mold core and the glass preform need to be slowly separated, so ζν slowly decreases to Z ^ ^ 0 from time to time; [0021] To achieve the manufacture of aspherical molded glass The method needs to be completed by the corresponding device. Please refer to the fifth figure, the device for molding glass includes the upper mold 1 〇 093135563 Form No. A0101 Page 7 / Total 15 Page 0993264001-0 1330619 __ July 2, 2008 Replacement page • , lower mold core 20, upper mold core 10 is located at the upper portion of the lower mold core 20, and a glass preform 30 is disposed between the upper mold core 10 and the lower mold core 20. To achieve automatic control of temperature, pressure, and cooling, the molded glass apparatus further includes a thermal feedback system, a cooling system, and a pressure system that are coupled to the main control system of the molded glass unit, respectively. [0022] The thermal feedback system can realize automatic temperature control, which includes a plurality of infrared radiation heaters 40 disposed around the upper mold core 10 and the lower mold core 20 for even heat distribution. The cloth can be symmetrically disposed on both sides of the upper mold core 10 and the lower mold core 20 to facilitate heating of the glass preform 30. The infrared heater 40 is instantly heated to the desired temperature. In order to measure whether the glass preform 30 in the mold reaches the desired temperature, a thermal couple 50 is required in the vicinity of the glass preform 30. A common thermocouple 50 is typically composed of an iron-copper alloy that is sensitive to temperature changes and that the thermocouple 50 transmits the measured temperature to the main control system. [0023] The process of the thermal feedback system is shown in the sixth figure. First, the temperature # is measured by the thermocouple 50 to determine whether the temperature reaches the forming temperature. If the temperature meets the requirements, the device for molding the glass is molded. If the temperature does not meet the requirements, the thermal feedback system The infrared heater 40 will be instructed to continue heating by the main control system to bring the temperature into compliance with predetermined requirements. The thermal feedback system primarily controls the forming temperature Τι, which is a cyclic process. [0024] The cooling system can control the cooling temperature, which is accomplished by the cooling device 60. The cooling device 60 is located on one side of the upper mold core 10 and the lower mold core 20, and includes a cooling gas 62 and a mass flow rate controller 64. Wherein the cooling gas 62 is nitrogen gas, which can be understood as 093135563 Form No. A0101 Page 8 / Total 15 Page 0993264001-0 1330619 On July 22, 2008, the shuttle gas is also the other inert gas such as argon. Gas, suffocating, etc. The flow meter 64 is used to control the flow of the cooling gas 62. In order to cool the glass preform 30 uniformly, the cold gas 62 is evenly distributed around the glass preform. During the high temperature and high pressure process, the cooling gas 62 is made of an inert gas such as nitrogen [0025] to avoid the upper mold 10 and the lower mold. The release film on the surface of the core 20 is oxidized to extend the life of the upper mold core 10 and the lower mold core 20. For the cooling system process, see Figure 7 'Firstly, the cooling temperature T3 of the glass preform 30 is measured by the thermocouple 5〇 to 490 ° C. If the requirements are met, the cooling process is completed; if the requirements are not met, the information is fed back to the main The control system changes the flow of cooling gas 62 by adjusting flow meter 64 to achieve the desired cooling temperature. [0026] The pressure system can control the pressure, and the molding system includes: a molding machine 70, the molding machine 70 applies pressure from the upper mold, and the pressing method can be pneumatic or electric pressing. , oil pressure or spring pressure, etc. In this embodiment, the molding machine 70 applies pressure to the upper mold by gas, and the molding machine 7〇 can accurately measure the load of the pressing force, and in the process of applying pressure, in order to control the pressure of different positions of the mold core, A position sensor is also required on the mold core. The position sensor is a position sensor. The position sensor can measure the position of the mold core, and after being measured, the measured parameter is transmitted to the main control system. Complete the automatic adjustment of the position of the upper and lower molds.
[0027] 综上所述，本發明符合發明專利要件，爰依法提出專利 申晴。惟，以上所述者僅為本發明之較佳實施例，舉凡 熟悉本發明技藝之人士，在援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】 093135563 表單編號A0101 第9頁/共15頁 0993264001-0 1330619 099年07月22日核正巷換頁 [0028] 第一圖係模造玻璃之物理、機械性能特性與溫度之關係 圖， [0029] 第二圖係非球面模造玻璃製造之溫度對時間的曲線； [0030] 第三圖係非球面模造玻璃製造之壓力對時間曲線； [0031] 第四圖係非球面模造玻璃製造之模造位置對時間曲線； [0032] 第五圖係該模造玻璃製造裝置圖。 [0033] 第六圖係非球面模造玻璃製造之溫度控制流程圖； [0034] 第七圖係非球面模造玻璃製造之冷卻控制流程圖； [0035] 第八圖係非球面模造玻璃製造之壓力控制流程圖。 【主要元件符號說明】 [0036] 上模仁：10 [0037] 下模仁：20 [0038] 玻璃預型體：30 [0039] 紅外加熱器：40 [0040] 熱電偶：50 [0041] 冷卻裝置：60 [0042] 冷卻氣體：62 [0043] 流量計：64 [0044] 模壓機：70 093135563 表單編號A0101 第10頁/共15頁 0993264001-0[0027] In summary, the present invention complies with the invention patent requirements, and patents Shen Qing according to law. However, the above-mentioned embodiments are merely preferred embodiments of the present invention, and those skilled in the art will be able to incorporate the equivalent modifications and variations of the invention in the spirit of the invention. [Simple description of the drawing] 093135563 Form No. A0101 Page 9 / Total 15 Page 0993264001-0 1330619 July 22, 2008, Nuclear Front Lane [0028] The first picture shows the relationship between physical and mechanical properties and temperature of molded glass. [0029] The second figure is a temperature versus time curve for aspherical molded glass manufacturing; [0030] The third figure is a pressure versus time curve for aspherical molded glass manufacturing; [0031] The fourth figure is aspherical molded glass Molded position versus time curve of manufacture; [0032] The fifth figure is a diagram of the molded glass manufacturing apparatus. [0033] Figure 6 is a temperature control flow chart for aspherical molded glass manufacturing; [0034] Figure 7 is a cooling control flow chart for aspherical molded glass manufacturing; [0035] Figure 8 is a pressure for aspherical molded glass manufacturing Control flow chart. [Main component symbol description] [0036] Upper mold kernel: 10 [0037] Lower mold core: 20 [0038] Glass preform: 30 [0039] Infrared heater: 40 [0040] Thermocouple: 50 [0041] Cooling Device: 60 [0042] Cooling gas: 62 [0043] Flow meter: 64 [0044] Molding machine: 70 093135563 Form number A0101 Page 10 / Total 15 page 0993264001-0