Holographic storage layer, holographic disk using the same, and method for manufacturing the same

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

14/660,921

專利證號

US 9,895,853 B2

專利獲證名稱

Holographic storage layer, holographic disk using the same, and method for manufacturing the same

專利所屬機關 (申請機關)

國立中央大學

獲證日期

2018/02/20

技術說明

本技術於全像儲存碟片中建立反射結構所組成之腔體，限制寫入光之擴散面積，增加參考光與訊號光之混合程度，增加全像儲存材料之利用率。 傳統全像儲存系統於儲存容量上最大的限制為每一頁寫入碟片時，必定需要對一定範圍的儲存材料曝光，而此曝光範圍往往超過資訊儲存所需的材料範圍，因而浪費大量的感光分子。本發明之技術特點就在於全像儲存碟片中加入低折射率區域或反射材質，構成入口面積相當於訊號所需最小聚焦區域大小(Nyquist Aperture)之腔體，限制寫入光之擴散面積，增加全像儲存材料之利用率。 Cavity consisting of the art in holographic storage disc reflective structure is established , to limit the spread of the writing light area, increasing the degree of mixing of the reference light and signal light , increase the utilization of holographic storage material . Like traditional full storage capacity of the storage system to the maximum limit for each page when writing the disc , will require a range of storage material exposure , and this exposure range often exceeds the scope of the information stored materials needed , thus wasting a lot of photosensitive molecules. Technical features of the present invention is that the whole image is stored discs by adding low refractive index region or reflective material, constitute the entrance area equivalent to the size of the focus area required minimum signal (Nyquist Aperture) of the cavity , to limit the spread of the writing light area , increase the utilization of holographic storage material .

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