f 經濟部中央標準局員工消費合作社印掣 P432 3 7 9 五、發明説明（/ ) 本發明之創作内容係有關於一種可將相變位光記錄光 碟初始化的裝置，特別指的是一種具有特殊設計之機構 及光學系統，快速地將原來光碟上非晶質化狀態的相變 位光記錄材料轉變為晶質化狀態的相變位光記錄光碟初 始化裝置。 ' 目前已商業化的相變位光記錄光碟的典型結構，由具 有微細溝紋1_2或0.6釐米的PC基材、第一介電層、相 變位光記錄材料、第二介電層、鍍鋁反射層及紫外線硬 化塗層所组成。其令相變位光記錄材料利用濺鍵或其他 鍍膜程序鍍膜後，由於目前通用之各種鍍膜製程限制， 此鍍膜乃以非晶質的形態均勻鍍在光碟基材上。經過鍍 層處理後的每一片相變位光記錄光碟必須經過初始化程 序’利用加熱方式’將相變化材料加熱至超過攝氏2〇〇 度以上的晶質化溫度’使非晶質化的相變位光記錄材料 轉變為晶質化形態，提高相變位光記錄光碟反射率’如 此才能提供光學拾取頭足夠反射光強度，使光學拾取頭 之自動尋轨及自動對焦機制能正常運作，達到資料寫入 之目的。目前將相變位光記錄材料由非晶質化狀態轉變 為晶質化形態的方法有全域加熱及局部加熱兩種方式。 由於一般PC基材的玻璃溫度均在攝氏15〇度至2〇〇度之 間’因此全域加熱方式無法應用在相變位光記錄材料的 初始化’至於局部加熱方式，在不超過PC基材的玻璃溫 度且能在相變位光記錄材料面上產生攝氏約200度以上 溫度’最佳的方式是利用高功率二極體雷射，此一作法 係將焉功率二極體雷射光經由高數值孔徑的透鏡將光束 本紙張尺度適财關家(2‘2-97·^) ---------.装------訂------東 (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 432379 五、發明説明（E ) 能量聚焦在相變位光記錄材料面上，將記錄材料層局部 瞬間加熱，達到初始化的目的。此時由於聚焦光束投影 在pc基材的面積比聚焦在相變位光記錄材料層的光點大 許多’因此投影在pc基材的光強度較低，所以當聚焦光 束聚焦在相變位光記錄材料層局部瞬間加熱做初始化時 ’ PC基材的溫度仍可維持低於玻璃溫度以下，不會有相 變位光記錄光碟變形翹曲的問題產生。 相變位光記錄光碟的可擦拭能力直接影響碟片的重覆 讀寫的次數’而相變位光記錄光碟的可擦拭能力又與初 始化條件直接相關，此所指的初始化條件特別指的是雷 射光點在光碟之相變位光記錄層對碟片每一位置局部加 熱’使光碟片上每個位置接收到同樣的能量，使得晶質 化的相變位光記錄材料層的結晶顆粒具有一致性，也就 是說經初始化後的相變位光記錄光碟具有一致的反射率 ’此時相變位光記錄光碟的可擦拭能力便可相對的提高 。而要提高相變位光記錄光碟反射率的均勻度，主要的 關鍵為初始化所使用高能量雷射聚焦在相變位光記錄材 料之光點的大小及能量密度的變異度。在能量密度維持 不變的情形之下’若聚焦在相變位光記錄材料之光點寬 度愈寬，經具有此光點特性之高能量雷射初始化的相變 位光記錄光碟，將可提高相變位光記錄光碟的可 , 释執能 力’而且初始化線速度也可相對提高，增加產能。 [P技藝 圖（一）為習知的相變位光記錄光碟之初始化裝署 1 ’此 ---------裝------訂------懷 (諳先聞讀背'&之';1意事項再填寫本頁} 本紙張用中國國家標隼（CNSM4規格（2丨0乂297公釐） ' ^<一 — A7 鼷43237 9 五、發明説明（3) ' 一 (請先閲讀背而之注意事項#填寫本萸) 經濟部中央標準局員工消費合作衽印製 裝置主要包含有單一旋轉主軸i〇3、線性位移平台】及 包含自動對焦系統與初始化光源的光學頭1〇】所組成， 相變位光記錄光碟104以真空吸附或其它機械固定方式 被固定在旋轉主轴103上一起轉動，光學頭1〇〗係固定 在線性位移平台1〇2，而且光學頭1〇1内之自動對焦系統 與初始化光源均來自同一高功率二極體雷射，部份雷射 光源用於自動對焦系統，其餘的雷射功率被聚焦後，在 相變位光記錄材料層形成約寬丨微米長96微米的細長條 光點，當線性位移平台102載著雷射頭沿著相變位光記 錄光碟1 04 #半徑方向移動，配合自動對焦系統在相變 位光記錄材料層維持一定大小光點及旋轉主軸】〇3之轉 動達到相變位光記錄光碟104初始化的目的。在此習 知作法的光學系統，係在相變位光記錄材料層形成約寬！ 微米長96微米的細長條光點2〇1，如圖（二）所示，由於 此做法利用一對一對應的光學方式，將高功率二極體雷 射約寬1微米長100微米的發射開口，去掉100微米方 向兩端強度不均勻區後，直接成像聚焦在相變位光記錄 材料層形成約tl微来長96微采的細長條光點，此一做 法因為有效聚焦深度較短，使得自動對焦系統及光點大 小對於系統振動、光碟片轴向偏擺及其它外界擾動較為 敏感，造成自動對焦不穩定及聚焦在相變位光記錄材料 層光點之能量密度具有變異量，此些負面效應將直接降 低初始化裝置的初始化能力；另外，此一習知作法之初 始化與自動對焦光源均利用同一支高功率二極體雷射， 並整舍在整個光學頭中，由於一般的高功率二極體雷射 本紙張尺度適用中國國家標準（CNS)A4規格（2]0;<297公尨） Λ 7 Β7 ,432 3 7 9 五、發明説明（斗 的壽命-般在2_至3G⑽小時mm統 的運作時間超過雷射壽命期後，必需將整顆含有自動對 焦系統的雷射頭整組太換掉，而無法只汰換高功率二極 體雷射：因此:广習知作法較不具經濟效益。再者，此 習知作去採用單—旋轉主軸’系統的初始化速度又將因 主抽啟動與停止時間而更為降低。 創作內容詳細說明 為解決習知做法的問靡4 古丄 化品質及速度，本發明變位光記錄光碟初始 始化的裝置，其Π = 相變位光記錄光碟初 丹卞尤干系統具有整合一支以上高功率二 的ΐ力’可將輻射方向入射的高功率二極體雷 射u、在-微小反射多面鏡後，所有的反射光將 —方向光路前進，最狳山w ^ 取便由自動對焦系統之聚焦透鏡聚焦 目變位光記錄材料層。由於此光學系統的特殊設計， :::ί Γ位光記錄材料層可形成較大區域的先點且維 :照射在相變位光記錄材料層足夠雷射能量密度，使肩 ::晶質態鑛層能在短時間内轉變為晶質態鍍層，得到 ::南擦执率的相變位光記錄光碟；另外本發明 =的獨特設計’初始化光源及自動對焦光源係採用 如:始化光源與部份光學元件設計成為初 。化先源模組，與自動對焦系統形成 :發明初始化裝置之光學系統的特殊設：獨=用组2 光學成像轉換過程使得光學系統聚焦光 ， 習知作法提高了約九倍，並且使得系重的聚焦深度只 '先對於初始化光溻 本紙張尺縣（CNS )Λ4— (7^χ297 λ$ (請先閱讀背面之注意事項再填寫本页) ---------襄---- ___ Τ 每濟郎中央標準局員工消f合作祍印製 rP432379 五、發明説明（5 ) 模組及自動對焦系統在機械定位上的誤差容忍度提高許 多’此一特性除可增強初始化裝置在初始化時抗外界擾 動能力，當利用本發明之初始化裝置對不同基材厚度 (1.2mm及〇.6mm)的相變位光碟片做初始化時，對於因基 材厚度所衍生的球面像差具有較佳之抗像差能力，使系 統運作更加穩定；而且，當高功率二極體雷射到達2000 至3000小時的使用壽命時，只需單獨更換含有高功率二 極體雷射的初始化光源模組即可，而不必如習知作法連 良動對焦系統一起更換整組光學頭，在時效及經濟效益 方面之考量’本發明之作法確比習知系统具有更優良的 產業可利用價值性。另外，本發明之初始化裝置除可採 用習知系統之單一主軸架設外，尚可採用雙旋轉主軸或 更多旋轉主軸的機構設計，來避免如習知做法之單一雙 旋轉主軸設計因主軸啟動與停止所浪費的等待時間（约1〇 秒左右），因此本發明之初始化裝置可有效提高系统初始 化速度’增加產能。為求說明簡便，以下之說明均以雙 旋轉主軸為基本架構進行說明。 經濟部中央標準局員工消費合作社印裝 (請先閲讀背面之注意事項再填寫本頁) 圖（二）所不為本發明相變位光記'錄光碟初始化裝置的 裝置圖，其中主要包括有一個光學頭3〇1、一個直線位移 平台302與兩個旋轉主軸303及304，相變位光記錄光碟 3 05及306係以真空吸附方式被分別固定在旋轉主軸3〇3 及304上，而光學頭301係被適當固定在線性位移平台3〇2 上，與相變位光記錄光碟依等線性速度（CLV)或等角速度 (CAV)做相對運動。當線性位移平台3〇2載著雷射頭沿著 旋轉主軸303上之相變位光記錄光碟3〇5的丰徑方向 本紙張尺度適用中國國家標孪（CNS ) A4说格（210X297公楚> A? 動進行初始化’另外一個旋 態，當旋轉主轴303上之相锝主軸304開始進行準備狀 初始化後’線性位移平二3〇f位光記錄光碟305的完成 主軸303及304之中心途始由馬達307驅動延著旋轉 快速移動到旋轉主# 304上線/士向運動，載著光學頭301 初始化，此時旋轉主軸3〇3 2變位光錄光碟遍進行 的循環式動作，進行本發進行準備狀態，如此 ^ S 5Λ1 初始化裝置的初始化程序。 ::，…Λ上六支~瓦特的高功率二極體雷射，可 微米、長約180微米的聚焦 P4 32 3 7 9 五、發明説明（6 ) 在相變位材料層產生寬約 光點，此時相變位光記錄奸Μ ^ 球材枓層具有如習知作法一樣的 雷射能量密度，則同樣每~ Κ古^ 月直馒120mm的相變位光記 可在15 運用本發明相 變位光記錄光碟初始化裝置’由於聚焦在相變位村料層 的光點範圍比習知方法提高六倍左右，而且在大區域光 點内仍可維持與習知作法一樣的能量密度’因此經由本 發明的初始化裝置初始化的相變位光記錄光碟可得到最 佳的結果’也就是說可以得到可擦拭率較高的相變位光 s己錄光碟。以下將對本發明之初始化裝置光學頭中光學 系統之架構做一說明。 圖（四）所示為本發明初始化裝置中光學頭301之光學 系統架設圖之一實施例’其中包括有初始化光源系統401 與自動對焦系統4 0 2兩部份。在此實施例中之初始化光 源系統401具有六支南功率·—極體雷射403、404、405、 406、407及408，以微小反射多面鏡409為中心沿約輻 射狀排列，每支高功率二極體雷射分別對應到一組含有 本紙張尺度適用中國國家標準（CNS ) A4規格（21〇〆297公嫠） ---------装------訂------懷 (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 A7 B7 ^Ji4 32 3 7 9 '— 〜 ι、·. 五、發明説明（7 多個光學元件的光學系統410, 411、412、413、414及4 15 ’每一組光學元件的作用為調整每支高功率二極體雷射 發射開口之數值孔徑使得垂直及平行於發射開口的數值 孔徑相當’並且補償因矯正數值孔徑所產生之像散像差 ’使得每道先形成近乎平行化光束。然後此些光束再分 別經過聚焦透鏡416、417、418、419、420及421聚焦 後’每支高功率二極體雷射寬1微米長1〇〇微米之發射 開口經對應光學系統後’可分別在微小反射多面鏡409 的附近成像聚焦’此六道高功率二極體雷射光經微小反 射多面鏡4〇9反射後的等效成像聚焦位置具有共平面的 特性’而且每支高功率二極體雷射發射開口的影像經上 述光學系統後’在長及寬方向將分別被放大約5 〇倍及6 6 倍’也就是說經微小反射多面鏡4 09反射後的每一高功 率二極體雷射在微小反射多面鏡409處之成像共平面的 光點大小均為50微米及660微米，在此之微小反射多面 鏡409的作用係將六道高功率二極餿雷射光匯集成六道 主光束互為平行的光源並且可精確控制每道高功率二極 體雷射光反射後的光束長度區域大小，此六道主光束互 為平行的光源再經過具有等效放大倍率為〇〇6的預先聚 焦透鏡422及自動對焦系統中之聚焦透鏡616(請參閱圖 六）的光學組合，將光束聚焦在相變位光記錄材料層Η、 =閱圖六），在此光學架構之下，每支高㈣二極體雷 射在相變位光記錄材料層產生如圖（五）所示之寬3微米、 長約30冑米的光點，光點5〇2、5〇3、5〇4、5〇5、鳩及 依序橫向排列形成長約18〇微米的光點，為六支高功 ---------裝------訂------線 (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標隼局員工消费合作社印製 本纸張尺度適用中國國家樣準（CNS )八4瓦格（2丨〇\297公廣） 經濟部中央標準局員工消费合作社印製 顙4 32 3 7 9 a? ______ B7 _ 五、發明説明（8) 率二極體雷射在相變位光記錄材料層所形成寬約3微米 、長約1 8 0微米的光點5 0 1。其中在相變位光記錄材料層 光點大小之長度方向由原來的約40微米變成30微米， 乃因微小反射多面鏡409控制每道高功率二極體雷射光 反射後的光束長度區域大小的結果圖（六）所示為自動對 焦系統402的光學設計示意圖，所採用之低功率雷射光 源601的波長係與高功率二極體雷射不同，雷射光源6〇1 經平行化透鏡602將光束平行化後，經偏極分光鏡603 的反射後入射至透鏡聚焦616 —側，與高功率二極體雷 射光束423 —同聚焦在相變位光記錄材料層6 1 5，所產生 的反射光再經由聚焦透鏡616的另一侧回到偏極分光鏡 603，反射後的光束經直角稜鏡604折射後，再由聚焦透 鏡.6.0 5將光訊號聚在光偵測器60 6，由光镇測器606所檢 知的信號回授控制音圈馬達607調整透鏡聚焦616位置 ’使得自動對焦雷射與高功率二極體雷射在相變化光碟 在進行初始化時得以保持聚焦狀態。另外，在本發明中 之自動對焦系統中，内建有位置檢知光學60 8，此一農置 具有檢知透鏡聚焦616位置的功能，其原理為—發光二 極體609及610發光照射在聚焦透鏡616的之固定套筒613 外圍之刻割線6 1 4上’成像透鏡6 11用以將刻劃線6 1 4影 像成像在光偵測器6 1 2上’當相變化光碟6 1 5與聚焦透 鏡616之間具有相對變動量時，光偵測器612將可得到 與位置直接相關的訊號，由此訊號便可得知相變化光碟 615與聚焦透鏡616之間相對位置變動量，所以當相變化 光碟在進行初始化時可利用此一位置檢知光學6〇8得知 本紙張尺度適用中國國家標準{ CNS ) A4現格（210Χ297公釐） --------——装------訂------涑 (請先閱讀背面之注項再填艿本頁) 五、發明説明（ A7 B7 經濟部中央標準局員工消費合作社印製 光碟片的垂直偏擺量是否超出規範，因此 能可做為相變化光碟偏擺品質之監視作用。 圖（七）所示為本發明之初始化裝置光學系統之實施例 之二，在此系統中部份的光學元件配置，與圖（四）所示大 致相同，但在圖（四）中的微小反射多面鏡409，在此係以 —個平面繞射式光學元件409a所取代，在此繞射式光學 元件409a之細密光柵條紋平面，係區格成六個區域，利 用細密光柵繞射方法，取代圖（四）中微小反射多面鏡409 所利用的反射原理’將六道高功率二極體雷射光匯集成 六道主光束互為平行的光源，並且可由半導體或其他製 私控制繞射式光學元件4〇9a每一區域之大小，精確控制 每道高功率二極體雷射光反射後的光束長度區域大小， 圖（七）之局部放大圖為此繞射式光學元件4〇9a的運作示 意圖，其中之繞射式光學元件4〇9a分為幾個區域，每一 個區域依據入射光及繞射光方向具有各自先柵間距；至 於繞射式光學元件409a光柵的剖面形狀可以是二元化、 正弦或鋸齒狀，但為了使經繞射式光學元件409a之繞射 效率提高，在本發明令係採用鋸齒狀設計， 光學疋件409a繞射後的出射光強度得到最大。—^ 圖（八）所示為本發明之初始化裝置另一種 ::二在此系統中採用與圖(四)中每個高功率二極體雷 二;St學系統，樣’在圖(八)中’高功率二極體雷 古功率^^光學兀件模組410後由聚焦透鏡416將 :透之發射開口成像在光路空間中，並直 接透過預先聚焦魏422⑨自動對焦系統術中 此一附加功 (請先閲讀背面之注項再填寫本頁) 束f Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs P432 3 7 9 V. Description of the Invention (/) The content of the invention relates to a device that can initialize a phase-change optical recording disc, especially a device with a special The designed mechanism and optical system can quickly transform the original phase change position optical recording material on the optical disc into a crystal change state phase change position optical recording disc initialization device. '' The typical structure of commercially available phase change optical recording discs consists of a PC substrate with fine grooves 1_2 or 0.6 cm, a first dielectric layer, a phase change optical recording material, a second dielectric layer, and a plated It consists of an aluminum reflective layer and a UV-cured coating. After the phase-change optical recording material is coated by sputtering or other coating procedures, due to the current limitations of various coating processes, the coating is uniformly plated on the optical disc substrate in an amorphous form. Each phase-shifting optical recording disc that has undergone the plating process must undergo an initialization procedure 'using a heating method' to heat the phase-change material to a crystallization temperature above 200 ° C to cause the amorphous phase shift. The optical recording material is transformed into a crystalline form, and the reflectivity of the phase-change optical recording disc is improved, so as to provide the optical pickup with sufficient reflected light intensity, so that the automatic tracking and auto-focusing mechanism of the optical pickup can operate normally and achieve data writing. Into the purpose. At present, there are two methods of changing the phase-change position optical recording material from an amorphous state to a crystalline state by global heating and local heating. Because the glass temperature of general PC substrates is between 150 ° C and 200 ° C, the global heating method cannot be used for the initialization of phase change optical recording materials. As for the local heating method, The temperature of the glass and the temperature of the phase-change optical recording material can produce a temperature above about 200 degrees Celsius. The best way is to use a high-power diode laser. This method involves passing the high-power diode laser light through a high value. Aperture lens will adjust the beam size to this paper (2'2-97 · ^) ---------. Install -------- Order ------ East (Please read first Note on the back, please fill in this page again.) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 432379 V. Description of the invention (E) The energy is focused on the phase-change optical recording material surface, and the recording material layer is locally heated instantaneously to achieve the initialization. purpose. At this time, because the area of the focused beam projected on the pc substrate is much larger than the light spot focused on the phase-change position recording material layer, so the light intensity projected on the pc substrate is lower, so when the focused beam is focused on the phase-change position light When the localized instantaneous heating of the recording material layer is performed for initialization, the temperature of the PC substrate can still be maintained below the glass temperature, and the problem of deformation and warping of the phase change position optical recording disc will not occur. The erasability of a phase-change optical recording disc directly affects the number of repeated reads and writes of the disc, and the erasable ability of a phase-change optical recording disc is directly related to the initialization conditions. The initialization conditions referred to here specifically refer to The laser spot in the phase change position optical recording layer of the optical disc locally heats each position of the disc, so that each position on the optical disc receives the same energy, so that the crystal particles of the crystallized phase change position optical recording material layer have uniformity. In other words, the initialized phase-change position recording optical disc has a uniform reflectivity. At this time, the erasability of the phase-change position recording optical disc can be relatively improved. In order to improve the uniformity of the reflectivity of the phase-change optical recording disc, the main key is to initialize the size of the light spot and the variability of the energy density of the high-energy laser used to focus on the phase-change optical recording material. Under the condition that the energy density remains the same, 'If the spot width of the phase-change optical recording material is focused, the phase-change optical recording disc initialized by the high-energy laser with this light spot characteristic will improve The phase change position of the optical recording disc can be released, and the initializing line speed can be relatively increased, increasing production capacity. [PTechnical Figure (1) is the initial installation of the conventional phase change bit optical recording disc 1 'This --------- installation ---- order --- Huai (谙First read and read the '&之'; 1 items before filling out this page} This paper uses the Chinese national standard (CNSM4 specification (2 丨 0 乂 297mm) '^ < 一 — A7 鼷 43237 9 V. Invention Explanation (3) 'One (please read the back of the note #Fill this 萸) The consumer cooperation of the Central Standards Bureau of the Ministry of Economic Affairs 衽 The printing device mainly includes a single rotating spindle i03, a linear displacement platform] and includes autofocus The system is composed of an optical head 10 for initializing the light source. The phase-change position optical recording disc 104 is fixed and rotated on the rotating main shaft 103 by vacuum suction or other mechanical fixing methods. The optical head 10 is fixed on the linear displacement platform 1 〇2, and both the autofocus system and the initialization light source in the optical head 101 are from the same high-power diode laser. Some laser light sources are used for the autofocus system. After the remaining laser power is focused, The displacement optical recording material layer forms an elongated light spot with a width of about 丨 micron and a length of 96 micron. The platform 102 carries the laser head along the phase change position optical recording disc 1 04 # in the radius direction, and cooperates with the autofocus system to maintain a certain size of light spot and rotating main axis on the phase change position optical recording material layer. The purpose of the initialization of the bit-optical recording disc 104. The optical system known here is formed in the phase-change position optical recording material layer to form a width of about 100 micrometers long and 96 micrometers in length, as shown in Figure (II). It is shown that, because this method uses a one-to-one corresponding optical method, the high-power diode laser is about 1 micrometer wide by 100 micrometers long, and the emission opening is removed. The displacement optical recording material layer forms an elongated light spot with a length of about tl micrometers to a length of 96 micrometers. This method has a short effective focusing depth, which makes the autofocus system and the size of the optical point to the system vibration, the axial deviation of the optical disc, and Other external disturbances are more sensitive, causing the autofocus to be unstable and the energy density of the light spot focused on the phase-change optical recording material layer to have a variation. These negative effects will directly reduce the Initialization ability; In addition, the initialization and autofocus light sources of this conventional practice both use the same high-power diode laser, and are rounded up in the entire optical head. Due to the general high-power diode laser paper size Applicable to China National Standard (CNS) A4 specification (2) 0; < 297 males) Λ 7 Β7, 432 3 7 9 V. Description of the invention (the life of the bucket-generally in the range of 2_ to 3G / hour mm) After the life of the laser, it is necessary to replace the entire laser head with an autofocus system, so it is not possible to replace only high-power diode lasers: therefore: widely known practices are less economical. Furthermore This practice is to reduce the initialization speed of the single-rotary spindle system by the start and stop time of the main pump. The content of the creation details explains that in order to solve the problem of the conventional practice, the quality and speed of ancientization, the device for the initial initialization of the displacement optical recording disc of the present invention, its Π = phase-change displacement optical recording disc. The above high-power two forces can direct the high-power diode laser incident in the direction of the radiation u. After the micro-reflection polygon mirror, all the reflected light will advance in the direction of the optical path. The focusing lens of the focusing system focuses the layer of optically displaced optical recording material. Due to the special design of this optical system, ::: ί Γ position optical recording material layer can form a large area of the first point and dimension: irradiate the phase change position optical recording material layer with sufficient laser energy density, so that the shoulder :: crystalline The state ore layer can be transformed into a crystalline state coating in a short time, and the phase change position optical recording disc with the south rubbing rate is obtained; in addition, the unique design of the present invention = the initial light source and the autofocus light source are adopted as initiation The design of the light source and some optical components became preliminary. The original source module is formed with the autofocus system: the special setting of the optical system of the initialization device is invented: only = the optical imaging conversion process of group 2 is used to focus the optical system, and the conventional method has increased about nine times and made the system weight The depth of focus is only for the initial optical paper ruler (CNS) Λ4— (7 ^ χ297 λ $ (Please read the precautions on the back before filling this page) --------- XIANG-- -___ Τ The cooperation of the staff of the Central Standards Bureau of Perjilang printed rP432379. 5. Description of the invention (5) The tolerance of the module and the autofocus system on the mechanical positioning is improved. This feature can enhance the initialization device. The ability to resist external disturbances during initialization. When the initialization device of the present invention is used to initialize phase change discs with different substrate thicknesses (1.2mm and 0.6mm), it has a spherical aberration derived from the substrate thickness. Better anti-aberration capability makes the system more stable; moreover, when the high-power diode laser reaches a service life of 2000 to 3000 hours, only the initial light source module containing the high-power diode laser needs to be replaced separately It is not necessary to replace the entire set of optical heads together with a good moving focusing system as in the conventional practice, considering the time and economic benefits. The method of the present invention has better industrial availability value than the conventional system. In addition, In addition to the single-spindle setup of the conventional system, the initialization device of the present invention may also adopt a dual-spindle spindle or more rotary-spindle mechanism design to avoid the single-spindle spindle design of the conventional practice due to the spindle startup and The wasted waiting time (about 10 seconds) for stopping, so the initialization device of the present invention can effectively increase the system initialization speed and increase productivity. For simplicity, the following descriptions are based on the dual-rotary spindle as the basic structure. Economy Printed by the Consumer Standards Cooperative of the Ministry of Standards of the People's Republic of China (please read the precautions on the back before filling this page) Figure (II) The device diagram of the initialization device for the phase-change optical recording 'recording disc of the present invention, which mainly includes a Optical head 301, a linear displacement stage 302 and two rotating spindles 303 and 304, phase-change position optical recording discs 3 05 and 306 The system is fixed on the rotating spindles 303 and 304 by vacuum suction, respectively, while the optical head 301 is properly fixed on the linear displacement platform 302, and is in line with the phase-change optical recording disc at a linear velocity (CLV) or The constant angular velocity (CAV) makes relative movement. When the linear displacement platform 3202 carries the laser head along the phase change position of the rotating spindle 303, the direction of the optical path of the optical axis of the optical disc 3005 is used. CNS) A4 grid (210X297)> A? Initialize 'another spin state, when the main axis 304 of the rotating spindle 303 starts to perform the initialization initialization' linear displacement flat 30f-bit optical recording disc The completion of 305 The center of the main shafts 303 and 304 is driven by the motor 307 and moves quickly to the rotation main shaft. 304 goes online / in the direction of movement. It is initialized with the optical head 301. At this time, the rotating main shaft 302 is shifted. The circular motion of the optical disc is performed in a cyclical manner, and the present state is prepared. In this way, the initialization process of the device is initialized. ::,… Λ 6-watt high-power diode lasers can focus on micrometers and 180 micrometers long P4 32 3 7 9 V. Description of the invention (6) Generate broad light in the phase-change material layer At this time, the phase-change position recording light ^ ^ ball material layer has the same laser energy density as the conventional method, then the phase-change position record of 120mm straight ~ 120mm can be used at 15 Invented a device for initializing a phase-change position optical recording disc 'Because the range of the light spot focused on the material layer of the phase-change position is about six times higher than the conventional method, and the same energy density can be maintained in the light spot in a large area as in the conventional method 'Therefore, the phase change position recording optical disc initialized by the initialization device of the present invention can obtain the best result', that is, a phase change position recording optical disc having a high erasable rate can be obtained. The structure of the optical system in the optical head of the initialization device of the present invention will be described below. Figure (4) shows an embodiment of an optical system setup diagram of the optical head 301 in the initialization device of the present invention, which includes an initialization light source system 401 and an autofocus system 402. The initialized light source system 401 in this embodiment has six south powers—polar body lasers 403, 404, 405, 406, 407, and 408. The micro reflective polygon mirror 409 is arranged in a radial pattern around the center. Power diode lasers correspond to a set of paper sizes that are applicable to China National Standards (CNS) A4 specifications (21〇〆297 cm) --------- installation ------ order- ----- Huai (Please read the notes on the back before filling this page) Printed by the Consumers Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs A7 B7 ^ Ji4 32 3 7 9 '— ~ ι, ... V. Description of the invention (7 Optical systems 410, 411, 412, 413, 414, and 4 15 'of multiple optical elements. The function of each group of optical elements is to adjust the numerical aperture of each high-power diode laser emission opening so that it is perpendicular and parallel to the emission opening. The numerical aperture is equivalent to 'and compensates for the astigmatic aberrations caused by the correction of the numerical aperture', so that each channel first forms a nearly parallel beam. Then these beams are focused by the focusing lenses 416, 417, 418, 419, 420, and 421, respectively. After 'each high power diode laser is 1 micron wide and 100 micron long After the emission opening passes the corresponding optical system, 'the imaging focus can be achieved near the micro-reflective polygon mirror 409, respectively'. The equivalent imaging focus positions of the six high-power diode laser lights reflected by the micro-reflective polygon mirror 409 have a coplanar Characteristics' And the image of each high-power diode laser emission opening after passing through the above-mentioned optical system 'will be placed approximately 50 times and 6 6 times in the length and width directions respectively', that is to say through a micro-reflective polygon mirror 4 09 The size of the imaging coplanar light spot of each high-power diode laser reflected at the micro-reflective polygon mirror 409 is 50 microns and 660 microns. The role of the micro-reflective polygon mirror 409 is to transmit six high powers. Dipole 馊 laser light is collected into six main light beams which are parallel to each other and can accurately control the length of the beam after each high power diode laser light reflects. The six main light beams which are parallel to each other are equivalent. Optical combination of a pre-focus lens 422 with a magnification of 0.06 and a focus lens 616 (see Figure 6) in the autofocus system, which focuses the light beam on the phase-change position light record Material layer (see Figure 6). Under this optical architecture, each high-㈣ diode laser produces a phase-change optical recording material layer with a width of 3 microns and a length of about 30 as shown in Figure (5). The light spot of the barley, the light spots 502, 503, 504, 505, doves, and horizontally arranged in order to form a light spot with a length of about 180 microns, which is six high powers -------- ---- Install ------ Order ------ line (please read the precautions on the back before filling this page) Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs This paper is applicable to China Sample Standard (CNS) 8 4 watts (2 丨 〇 \ 297 public broadcasting) Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 4 32 3 7 9 a? ______ B7 _ V. Description of the invention (8) Rated diode A laser spot 501 having a width of about 3 micrometers and a length of about 180 micrometers is formed by the laser in the phase change position optical recording material layer. Among them, the length direction of the spot size of the phase-change optical recording material layer changed from about 40 micrometers to 30 micrometers, because the micro-reflective polygon mirror 409 controls the size of the beam length region after each high-power diode laser light reflects. The result diagram (6) shows the optical design of the autofocus system 402. The wavelength of the low-power laser light source 601 is different from that of the high-power diode laser. The laser light source 601 is parallelized by a lens 602. After the beams are parallelized, they are reflected by the polarizing beam splitter 603 and incident on the focusing 616 side of the lens, and are focused on the phase-change position optical recording material layer 6 1 5 together with the high-power diode laser beam 423. The reflected light is returned to the polarizing beam splitter 603 through the other side of the focusing lens 616. The reflected beam is refracted by the right angle 稜鏡 604 and then focused by the focusing lens. 6.0 5 The optical signal is focused on the light detector 60 6 The signal feedback control detected by the optical ballast tester 606 controls the voice coil motor 607 to adjust the lens focus 616 position, so that the autofocus laser and the high-power diode laser can maintain the focus state during the phase change disc during initialization. . In addition, in the autofocus system of the present invention, a position detection optic 60 8 is built in. This farm has the function of detecting the position of the lens focus 616. The principle is that the light-emitting diodes 609 and 610 emit light on The fixing sleeve 613 of the focusing lens 616 is surrounded by a scribe line 6 1 4 on the periphery of the imaging lens 6 11 for imaging the scribe line 6 1 4 on the photodetector 6 1 2 'when the phase change disc 6 1 5 When there is a relative amount of change from the focusing lens 616, the light detector 612 can obtain a signal directly related to the position, and the signal can know the relative position of the phase change disc 615 and the focusing lens 616. When the phase-change disc is initialized, this position detection optics 608 can be used to know that the paper size is applicable to the Chinese national standard {CNS) A4 (210 × 297 mm). ------ Order ------ 涑 (Please read the note on the back before filling this page) V. Description of the invention (A7 B7 Vertical deviation of the optical discs printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Whether the swing amount exceeds the specification, so it can be used as a monitor of the quality of the phase change disc Figure (7) shows the second embodiment of the optical system of the initialization device of the present invention. The configuration of some optical components in this system is roughly the same as that shown in Figure (4), but in Figure (4) The small reflective polygon mirror 409 is replaced by a plane diffraction optical element 409a. Here, the fine grating fringe plane of the diffractive optical element 409a is divided into six regions, and the fine grating diffraction is used. Method instead of the reflection principle used by the micro-reflective polygon mirror 409 in Figure (4), which combines six high-power diode lasers into six light sources whose main beams are parallel to each other, and can be controlled by semiconductors or other private control diffraction The size of each area of the optical element 409a accurately controls the size of the beam length area after the reflection of each high-power diode laser light. The partial enlarged view of Figure (VII) is the operation of the diffractive optical element 409a. Schematic diagram, where the diffractive optical element 409a is divided into several regions, each of which has its own grid pitch according to the direction of incident light and diffracted light; as for the diffractive optical element 409a The cross-sectional shape of the grid can be binary, sinusoidal, or zigzag. However, in order to improve the diffraction efficiency of the diffractive optical element 409a, the zigzag design is adopted in the present invention. The light intensity is maximized.-^ Figure (8) shows another kind of initialization device of the present invention: 2: In this system, each high-power diode Thunder II shown in Figure (4) is used; 'In the figure (eight)' high-power diode Legu power ^^ After the optical element module 410, the focusing lens 416 images the transmitting opening through the optical path space and directly focuses through the pre-focused Wei 422⑨ autofocus This additional work in the system (please read the note on the back before filling this page)
Iff I 本紙張尺度適標準（CNS ) Α4ίΐϋ〇Χ297公釐) ---- 酽4 32 3 7 9 A7 B7 五、發明説明（/0 ) 透鏡616’在相變位光記錄材料層615產生寬3微米、長 40微米的聚焦光點。在圖（八）令之光學系統若適當調整 聚焦透鏡416及預先聚焦透鏡42 2的尺寸及位置，可在 相變位光記錄材料層6丨5產生不同長寬比例（例如：宽3 微米、長100微米）的聚焦光點。由於圓（八）之光學設計 仍是利用兩次聚焦成像轉換過程’使光學系統的品質對 光學元件機械定位誤差容忍度提高，因此在本實施例中 的光學設計仍具有圖（四）設計所具有之高功率二極趙雷射 模組因光學特性容忍機械定位具有較大的誤差度，因此 可整個初始化模組單獨汰換不需做特殊調校程序，並且 整體系統對外界抗干擾能力同樣具有優異性能。 以上所述之創作内容係用以闡述本發明之工作原理而不 在限制本發明的範圍。對於習於本技藝之士皆可瞭解的 是’在該些說明或描述中仍可以進行其他形態或細節上 的變化，而仍不偏離本發明的範疇之外。 圖示說明： 圖（一）習知相變位光記錄光碟之初始化裝置 圖（二）習知作法的光學系統在相變位光記錄材料層形成 約寬1微米長96微米的細長條光點 圖（二）本發明相變位光記錄光碟初始化裝置的裝置圖 圓（四）本發明初始化裝置光學頭中之光學系統架設圖實 施例之一 圖（五）高功率二極體雷射在相變位光記錄材料層所形成 寬約3微米、長約i 8〇微米的光點 本尺度適用中國國家標準 ---------装------ —訂------咪 (請先閲讀背面之注意事項再填寫本頁) 經濟部中央樣準局員X消費合作社印¾ ^4 32 3 7 9 五、發明説明（丨）） 圖（六）本發明自動對焦系統的光學設計示意圖 圖（七）本發明之初始化裝置光學頭中之光學系統之實施 例之二 圖（八）本發明之初始化裝置光學頭中之光學系統之實施 例之三 元件符號說明\ 101 光 學 頭 102 線 性 位 移 平 台 103 旋轉 主 軸 104 相 變 位 光 記 錄光碟 201 寬 1 微 米 長 9 6微米的細長條光點 301 光 學 頭 、 302 直 線 位 移 平 台 (請先閲讀背面之注意事項再填寫本I) 經濟部中央標準局員工消費合作社印製 303及304 :旋轉主軸 305及306:相變位光記錄光碟 307 :馬達 401 :初始化光源系統 402 :自動對焦系統 4 03、4 04、405、4 06、407及408:高功率二極體雷射 409 :微小反射多面鏡 410、411、412、413、414及415:多個光學元件的光學系統 416、417、418、419、420 及 421 :聚焦透鏡 422 :預先聚焦透鏡 423 :高功率二極體雷射光束 本紙張尺度適用中國國家標芈（CNS ) A4規格（210X297公釐） 經濟部中央標率局負工消費合作社印製 _SA32-3-l-2_ll_五、發明説明（) 501 :寬約3微米、長約180微米的光點 502 、 503 、 504 、 505 、 506 及 507 :光點 601 :低功率雷射光源 602 :平行化透鏡 603 :偏極分光鏡 604 :直角稜鏡 605 :聚焦透鏡 606 :光偵測器 607 :音圈馬達 6Ό8 :位置檢知光學 609及610 :發光二極體 6 11 :成像透鏡 6U :光偵測器 613 :固定套筒 614 :刻劃線 615:相變位光記錄材料層 6 1 6 :聚焦透鏡 ---------士衣--------訂------味！ (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準{ CNS ) A4规格（210X297公釐）Iff I Standard for this paper (CNS) Α4ίΐϋ〇 × 297mm) ---- 酽 4 32 3 7 9 A7 B7 V. Description of the invention (/ 0) The lens 616 'produces a wide width in the phase change position optical recording material layer 615 Focused spot of 3 microns and 40 microns in length. If the size and position of the focusing lens 416 and the pre-focusing lens 42 2 are adjusted appropriately in the optical system shown in Figure (8), different aspect ratios (eg, 3 micron width, 3 micron width, 100 μm) focused spot. Since the optical design of the circle (eight) is still using the two focus imaging conversion process to make the quality of the optical system tolerant to the mechanical positioning error of the optical element, the optical design in this embodiment still has the diagram (d) The high-power two-pole Zhao laser module has a large tolerance for mechanical positioning due to its optical characteristics. Therefore, the entire initialization module can be replaced independently without special calibration procedures, and the overall system has the same ability to resist external interference. Has excellent performance. The above-mentioned creative content is used to explain the working principle of the present invention without limiting the scope of the present invention. It will be understood by those skilled in the art that ‘other forms or details may be changed in these descriptions or descriptions without departing from the scope of the present invention. Graphic description: (a) Initialization device of the conventional phase-change optical recording disc (two) The optical system of the conventional method forms an elongated light spot with a width of about 1 micrometer and a length of 96 micrometers in the phase-change optical recording material layer Figure (II) Device diagram of the initialization device of the phase-change optical recording disc of the present invention Circle (IV) One of the embodiments of the optical system setup diagram of the optical head of the initialization device of the present invention (F) High-power diode laser in the phase The light spot formed by the layer of displacement optical recording material has a width of about 3 microns and a length of about 80 microns. This standard is applicable to Chinese national standards. --Mi (please read the precautions on the back before filling this page) Printed by the Central Procurement Bureau of the Ministry of Economic Affairs X Consumer Cooperatives ^ 4 32 3 7 9 V. Description of the invention (丨) Figure (6) The autofocus system of the present invention (7) The second embodiment of the optical system in the optical head of the initialization device of the present invention (eight) The eighth embodiment of the optical system in the optical head of the initialization device of the present invention Head 102 linear displacement platform 103 Rotary spindle 104 Phase-change position optical recording disc 201 Width 1 micron long 9 6 micron slender light spot 301 optical head, 302 linear displacement platform (please read the precautions on the back before filling in this I) Staff consumption of the Central Standards Bureau of the Ministry of Economic Affairs Cooperatives printed 303 and 304: Rotating spindles 305 and 306: Phase change position optical recording discs 307: Motor 401: Initial light source system 402: Autofocus system 4 03, 4 04, 405, 4 06, 407, and 408: High power two Polar body laser 409: micro-reflective polygon mirrors 410, 411, 412, 413, 414, and 415: optical systems of multiple optical elements 416, 417, 418, 419, 420, and 421: focusing lens 422: pre-focus lens 423: High Power Diode Laser Beam This paper is scaled to the Chinese National Standard (CNS) A4 (210X297 mm). Printed by the Consumers ’Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs_SA32-3-l-2_ll_V. Invention Explanation () 501: Light spots 502, 503, 504, 505, 506, and 507 of about 3 microns wide and 180 microns long: light spot 601: low-power laser light source 602: parallel lens 603: polarizing beam splitter 604 : Right angle 稜鏡 605: Focusing lens 606: photodetector 607: voice coil motor 6Ό8: position detection optics 609 and 610: light emitting diode 6 11: imaging lens 6U: photodetector 613: fixed sleeve 614: scribe line 615: Phase change position optical recording material layer 6 1 6: Focusing lens -------- Shiyi -------- Order -------- Taste! (Please read the precautions on the back before filling this page) This paper size is applicable to the Chinese National Standard {CNS) A4 specification (210X297 mm)