200912914 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種光學儲存系統(optical storage system)，特別是 種同轴體積全像儲存系統(eollinear volume holographic storage system)。 【先前技術】 體積全像光學儲存(volume holographic optical storage system)技 術為新興之儲存技術，可能會在五年至十年後取代現有之光碟機 (Optical Disc)與數位影音光碟(Digital Video Disc, DVD)機等儲存技 術，成為世界上主流之儲存技術。 同轴全像存取(collinear holographic read and write)架構為 Optware 公司所提出，該架構之特性為紀錄資料時，參考光與訊號光是由平面 波穿透一空間光調制器（Spatial Light Modulator，SLM)所構成，讀取 資料時，只有參考光部分穿透空間光調制器；此架構之優點為機構簡 單且相容於現有之光碟機儲存系統’並且由於相較於離軸架構，同軸 全像存取架構對於角度及位置較不靈敏，所以擁有生產時誤差容忍度 較佳的優點。200912914 IX. Description of the Invention: [Technical Field] The present invention relates to an optical storage system, particularly an eollinear volume holographic storage system. [Prior Art] Volume holographic optical storage system technology is an emerging storage technology that may replace existing optical discs and digital video discs (Digital Video Discs) after five to ten years. Storage technology such as DVD) has become the mainstream storage technology in the world. The collinear holographic read and write architecture is proposed by Optware. The characteristic of the architecture is that when the data is recorded, the reference light and signal light are transmitted by a plane wave through a spatial light modulator (SLM). Constituting, when reading data, only the reference light partially penetrates the spatial light modulator; the advantage of this architecture is that the mechanism is simple and compatible with existing optical disk storage systems' and because of the coaxial holographic image compared to the off-axis architecture The access architecture is less sensitive to angles and positions, so it has the advantage of better tolerance during production.
Optware 公司發表之一篇論文：Tsutomu Shimura，Shotaro Ichimum，A paper published by Optware: Tsutomu Shimura, Shotaro Ichimum,
Ryushi Fujimura, Kazuo Kuroda, Xiaodi Tan and Hideyoshi Horimai, Analysis of a collinear holographic storage system : introduction of pixel spread ftmctkm，’’ 〇pt· Let. 30, 1132 (2005)，其内容介紹同軸全像存取 糸統的像素擴展函數(Pixel Spread Function, SPF)，並探討數種參考光 的圖形，指出徑向條紋分布的參考光圖形會有最好的像素擴展函數。 然而，由於此種參考光圖形犧牲了大部分的能量，能量效率因而大幅 降低，使得提供光源的雷射功率需要大幅提高，所以增加了技術實現 5 200912914 上的難度 在Optware公司擁有之一篇同軸全像存 肅891㈣’參彻職⑽是軸-個_^: ^ 由-個空咖器來力-調制，再經由一:二光： ㈣__ Beam S_ter, PBS)讓兩道 行干涉，此篇專利於參考光部分提出一種對稱式的 、’、 形調制乃是基於使其所提出之存取架構能夠運作為考 素擴展函數並沒㈣刺好處·糾，在咖财公 另j 取架構之美國專利：us㈣882 B2+並沒有針對 【發明内容】 為了解決上述問題，本發明目的之一係提 #^«near volumeh〇l〇graplllc stor^ , 軸全像存取架構之像素擴展函數，不會浪費系統光源的能量，並^ 影響系統_移錄度_lngsensi她y)，所財發日何以改盖習知 技術之像素舰函數、偏移練纽參考光紐靴兼顧的問題。 本發明目的之—係提供_種_體積全像儲存_，在參考 部分加上-透鏡(㈣元件或利用一空間相位言周制器(—a】 哪偷or)進行相位_，因此，本發明之改良架構不但對於角度及 有生產時誤差容忍度較佳的優點，而且不需大幅提 回先源的㈢射功率，所以增加了技術實現的可行性。 因此’本發明之同軸體積全像儲存系统可廣泛應用於光學儲存產 業之各類光學儲雜品，例如各種辆機舰位料光碟機。 ，了，到上述目的，本發明之一實施例提供一種同健積全像儲 存系、克、包括：-光源；一空間光調制器，·其令，空間光調制器的 200912914 中央區域為一資料區，空間m 考區，從光源發出之—光之資料區的邊緣區域為一參 , ±咖疋束入射至空間光調制器，穿透資料區的部分 ㈣部㈣成-第-料絲；-透鏡元 ㈣二參枝束麟透奴件的相位 . λ ^ 采，及—紀錄媒材，其中，資料光束與第二 參考先束人社紀錄騎，存_於罐騎。 在J 述目的，本發明另—實施例提供—種同軸體積全像儲 光源；—空間相位調制器；其中，如相位調制 為-參者二二讀區’空間相位調制器之圍繞資料區的邊緣區域 二 '""源發出之—光束人射至空間相位調糖，穿透資料 3开ΓίΐΓΓ形成—f料光束，穿透參考區的部分經過相位 =:Γ:ΐ;及一紀錄媒材，其中，資料光束與參考光束入 射至紀錄媒材以儲存資料於紀錄媒材。 發明ίΓΐ由ΐ體實施例配合所貼的圖式詳加說明’當更容易瞭解本 發月之目的、技灿容、特點及其所達成之功效。 【實施方式】 明 詳細說明如下，所賴佳實關伽—朗㈣肋限定本發 像儲圖與第2圖’第1圖林發明—實施例之同軸體積全 圖’第2圖是本發明—實施例之空間光調制器 ^間^制㈣的中央區域為資料區22，用以調制訊號光(s卿！ b㈣’工間光調繼2G之_資料區22的邊緣區域為參考區24， =調制參考光㈣⑽cebeam)，光束12穿透資料區22的部分形成 -倉料光束32，即訊號光’光束12穿透參輕24的部分形成一參考 200912914 光束34; -透鏡元件40設於光源1〇與一紀錄媒材(__福⑷％ 之間並緊崎《辆健2G，在—實補巾，親元件4()可設於 空間光侧ϋ 20之前，亦可設於空間光調繼2Q之後，或可前後各 以-透鏡元件40失住空間光調制器2〇，用以進行相位調制⑽咖 modulation) ’參考光束34經過透鏡元件4〇的相位調制後形成一參考 光束36 ;資料光束32與參考光束36入射至紀錄媒材％以儲存資料 於紀錄媒材50。 在一實施例中，光源10可為一雷射二極體(LaserDi〇de,LD);空 20 ^r^-^aaBII^®fe(Liquid Crystal Display, LCD) 〇 透鏡元件40可為任何开>式之透鏡：例如球面透鏡、非球面透鏡、部 分鏤空之球面透鏡、部分鏤空之非球面透鏡、柱狀透鏡、部分縷空之 柱狀透鏡、環雜狀透鏡、中間鏤空環形球面透鏡、中間鏤空環形非 球面透鏡或其組合。 在一實施例中，透鏡元件40可黏附於空間光調制器2〇上。 在一實施例中，透鏡元件40為一環型柱狀透鏡，如第3圖所示。 在一實施例中，透鏡元件40為一中心鏤空透鏡，如第4圖所示。 在一實施例中，透鏡元件40為柱狀透鏡組合，如第5圖所示。 請參考第6圖，第6圖是本發明一實施例之同軸體積全像儲存系 統之部分架構示意圖，如圖所示，一光束處理模組6〇設於光源1〇與 空間光調制器20之間，光束處理模組6〇可包括至少一導光元件62 或至少一分光元件64 ,用以導光或分光，亦即把光束I]導光及分光 成資料光束37與參考光束38後再入射至空間光調制器2〇β在一實施 例中，導光元件62可為一反射鏡(mirror);分光元件64可為一分光器 (Beam Splitter, BS)或一偏極分光器。 請參考第7圖，第7圖是本發明一實施例之同軸體積全像儲存系 統之部分架構示意圖，如圖所示，一光束處理模組70設於透鏡元件 8 200912914 40與紀錄媒材50之間，光束處理模組70可包括至少一導光元件72 或至少一合光元件74，用以導光或合光，亦即把資料光束34及參考 光束36導光或合光成光束42再入射至紀錄媒材5〇。在一實施例中， 導光元件72可為-反射鏡(mirror);合光元件74可為分光器(Β_Ryushi Fujimura, Kazuo Kuroda, Xiaodi Tan and Hideyoshi Horimai, Analysis of a collinear holographic storage system : introduction of pixel spread ftmctkm,'' 〇pt· Let. 30, 1132 (2005), its content introduces coaxial holographic access system Pixel Spread Function (SPF), and explore several kinds of reference light patterns, indicating that the reference light pattern of the radial stripe distribution will have the best pixel expansion function. However, since this reference light pattern sacrifices most of the energy, the energy efficiency is greatly reduced, so that the laser power required to provide the light source needs to be greatly increased, so the technical implementation of the 5 200912914 difficulty is increased in a coaxial system owned by Optware. The full image of Susu 891 (four) 'participation (10) is the axis - a _ ^: ^ by - an empty coffee machine to force - modulation, and then through a: two light: (four) __ Beam S_ter, PBS) let the two lines interfere, this patent In the reference light part, a symmetric, ', and shape modulation is proposed based on the fact that the proposed access architecture can operate as a test extension function and not (four) the benefit of the thorns. Patent: us (four) 882 B2+ is not directed to [invention] In order to solve the above problem, one of the objects of the present invention is to raise the pixel extension function of the #^«near volumeh〇l〇graplllc stor^, the axis holographic access architecture, without wasting the system The energy of the light source, and ^ affect the system _ shift degree _lngsensi her y), the financial day to change the knowledge of the pixel ship function of the know-how, offset training button reference light. The object of the present invention is to provide a _ volume holographic storage _, and add a - lens ((4) component or a spatial phase terminator (-a) which steals the phase _ in the reference portion, therefore, this The improved structure of the invention not only has the advantages of angle and the tolerance of error in production, but also does not need to greatly withdraw the (three) radiation power of the source, so the feasibility of the technical realization is increased. Therefore, the coaxial volume hologram of the invention The storage system can be widely applied to various optical storage products of the optical storage industry, for example, various vehicle-based optical disk drives. In view of the above, an embodiment of the present invention provides a storage system of the same product. Including: - light source; a spatial light modulator, · the order, the central area of the spatial light modulator 200912914 is a data area, the space m test area, from the light source - the edge area of the light data area is a parameter, ± The curry beam is incident on the spatial light modulator, and the part (4) of the data area penetrates into the data area. The phase of the lens element (4) is the phase of the lens element. λ ^ mining, and - recording medium , where the light is And the second reference to the first person to record the ride, save the tank ride. In addition to the purpose of the present invention, another embodiment of the present invention provides a coaxial volume holographic storage source; a spatial phase modulator; wherein, for example, phase modulation is - The second and second reading areas of the participant's spatial phase modulator surround the edge area of the data area. The source is emitted by the beam. The beam is directed to the spatial phase to adjust the sugar, and the data is transmitted through the data. The portion penetrating the reference region passes through the phase =: Γ: ΐ; and a recording medium, wherein the data beam and the reference beam are incident on the recording medium to store the data in the recording medium. The invention is affixed by the 实施 body embodiment The pattern is detailed to explain 'When it is easier to understand the purpose of this month, the skill, the characteristics and the effect achieved. [Embodiment] The detailed description is as follows, the Lai Jiashi Guanga-lang (four) ribs limit the hair image FIG. 2 is a first embodiment of the present invention. The central region of the spatial light modulator (4) is a data area 22 for Modulation signal light (s Qing! b (four)' work The edge region of the data region following the 2G data region 22 is the reference region 24, = modulated reference light (4) (10) cebeam), and the portion of the beam 12 that penetrates the data region 22 forms a - warehouse beam 32, that is, the signal light 'beam 12 penetrates the light The portion of 24 forms a reference to the 200912914 beam 34; the lens element 40 is disposed between the light source 1〇 and a recording medium (__福(4)% and is tightly sturdy "the car 2G, in the real patch, the pro element 4 ( It can be set before the spatial light side ϋ 20, or after the spatial light modulation 2Q, or the space lens modulator 2 can be lost by the - lens element 40 for phase modulation (10) coffee modulation) The reference beam 34 is phase modulated by the lens element 4A to form a reference beam 36; the data beam 32 and the reference beam 36 are incident on the recording medium % to store data in the recording medium 50. In one embodiment, the light source 10 can be a laser diode (LD); the empty 20 ^r^-^aaBII^®fe (Liquid Crystal Display, LCD) 〇 lens element 40 can be any open > type of lens: for example, a spherical lens, an aspheric lens, a partially hollow spherical lens, a partially hollowed aspheric lens, a lenticular lens, a partially hollowed cylindrical lens, a ring-shaped lens, an intermediate hollow annular spherical lens, An intermediate hollow annular aspheric lens or a combination thereof. In an embodiment, the lens element 40 can be adhered to the spatial light modulator 2A. In one embodiment, lens element 40 is a toroidal lenticular lens as shown in FIG. In one embodiment, lens element 40 is a central hollow lens, as shown in FIG. In one embodiment, lens element 40 is a cylindrical lens combination, as shown in FIG. Please refer to FIG. 6. FIG. 6 is a partial schematic structural diagram of a coaxial volume holistic storage system according to an embodiment of the present invention. As shown, a beam processing module 6 is disposed on the light source 1 and the spatial light modulator 20. The beam processing module 6 can include at least one light guiding element 62 or at least one light separating element 64 for guiding or splitting light, that is, guiding and splitting the light beam I] into the data beam 37 and the reference beam 38. In the embodiment, the light guiding element 62 can be a mirror; the beam splitting element 64 can be a Beam Splitter (BS) or a polarizing beam splitter. Please refer to FIG. 7. FIG. 7 is a partial schematic structural diagram of a coaxial volume holistic storage system according to an embodiment of the present invention. As shown, a beam processing module 70 is disposed on the lens element 8 200912914 40 and the recording medium 50. The beam processing module 70 can include at least one light guiding component 72 or at least one light combining component 74 for guiding or combining light, that is, guiding or combining the data beam 34 and the reference beam 36 into a light beam 42. Then incident on the recording medium 5〇. In an embodiment, the light guiding element 72 can be a mirror; the light combining element 74 can be a beam splitter (Β_
Comblner，Bc)或偏極合光器(Polarization Beam Combiner，PBC)。 因此，本發明特徵之一係針對訊號調制部分加以改良，亦即在來 考光的部分加上-透鏡元件進行相位麵，且參考光強度不會因而降 低^省下來量使得纽的光源是高辨#射就能達到足夠Comblner, Bc) or Polarization Beam Combiner (PBC). Therefore, one of the features of the present invention is to improve the signal modulating portion, that is, the portion of the light-receiving portion is added to the lens element to perform the phase plane, and the reference light intensity is not reduced thereby, so that the light source of the button is high. Identify #射 can achieve enough
的能量以寫人紀錄媒材’並且在讀取時也能夠有足夠能量的讀取光； 所以’本發明找良雜可財效改善_全像存取轉之像素擴展 函數，不會浪費系統光源的能量，並且不影響系統的偏移靈敏度，所 以本發明可贿善習知技術之像雜展聽、偏移綠度及參考光亮 度不能兼顧的問題。 此外，根據加入-透鏡元件以引入相位調制之原理，也可以將空 制蝴目位調制器(例如—個具有她調制功能之液 曰曰面板）’此時不需要加上透鏡元件進行相位調制，亦即調鮮令間 部份健是光賴制，但旁邊之參考光部分為相位調 其所產生之她_制於加人透航件難生之她 βΒ. 〇 _刀力赠良，抑卩在參考摘部分加上—魏元件或细一 相位調制器進行相位調制，因此，本二 =較繼刪蝴_雜===== 南光源的雷射功率，所明加了技術實·可行性。 因此’本發明之同轴體積全像儲存系統可H貞Μ 業之各類光學儲存產品，例如各種光碟機與數位ίΓ光=學儲存產 以上所述之實施例僅係為說明本發明之技術思想及特 9 200912914 點’其目的在使熟f此項技藝 並據以實施，當不能以之限定 士能夠瞭解本發明之内容 本發明所揭示之精神所作之均，發明之專利範圍，即大凡依 發明之專利範圍内。 =專變化或修飾，仍應涵蓋在本 【圖式簡單說明】 第】圖為本發明—實施例之同輪 價王像儲存系統的架構示意圖； 第圖疋她—輪的示意圖； 第3圖是本發明—實施例之透鏡轉的示意圓； 第4圖是本㈣—實施例之透鏡元件的示意圖· 第5圖是本發明一實施例之透鏡元件的示意圖. ^是本發明-實施例之_體積全像儲存系統之部分架構示意 第7圖是本發明-實施例之__全像儲存魏之部分架構示意 圖。 【主要元件符號說明】 10 光源 12、42 光束 20 空間光調制器 22 貢料區 24 參考區 200912914 32、37 資料光束 34、36、38 參考光束 40 透鏡元件 50 紀錄媒材 60、70 光束處理模組 62、72 導光元件 64 分光元件 74 合光元件 11The energy is written by the person to record the medium 'and can also read light when there is enough energy to read; so 'the invention finds good and good financial efficiency improvement _ holographic access to the pixel expansion function, will not waste the system The energy of the light source does not affect the offset sensitivity of the system, so the present invention can solve the problem that the image mixing technique, the offset greenness, and the reference brightness cannot be balanced. In addition, according to the principle of adding a lens element to introduce phase modulation, an empty butterfly modulator (for example, a liquid helium panel having her modulation function) can also be used. , that is, the fresh-keeping order is part of the health system, but the reference light part of the side is the phase adjustment of the resulting her. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ In addition, the reference component is added with a Wei component or a fine phase modulator for phase modulation. Therefore, the second is more than the subsequent flashing _heap ===== the laser power of the south light source. ·feasibility. Therefore, the coaxial volume holographic storage system of the present invention can be used in various optical storage products, such as various optical disc drives and digital optical storage. The embodiments described above are merely illustrative of the technology of the present invention. Thoughts and Specials 2009 20091414's purpose is to make this skill and implement it. When it is not possible to understand the content of the present invention, the scope of the invention is universal. Within the scope of the invention patent. =Special change or modification, still should be covered in this [Simplified description of the drawings] The first diagram is a schematic diagram of the architecture of the same-rotation king image storage system of the present invention - the first diagram of the her-wheel; 4 is a schematic view of a lens element of the present invention, and FIG. 5 is a schematic view of a lens element according to an embodiment of the present invention. ^ is a present invention - an embodiment Part of the architecture of the volume holographic storage system Fig. 7 is a partial schematic diagram of the __full image storage of the present invention-embodiment. [Main component symbol description] 10 Light source 12, 42 Beam 20 Spatial light modulator 22 Garbage area 24 Reference area 200912914 32, 37 Data beam 34, 36, 38 Reference beam 40 Lens element 50 Recording medium 60, 70 Beam processing mode Group 62, 72 light guiding element 64 light splitting element 74 light combining element 11