| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a structure of optical information recording medium capable of preventing information light and recording/reference light for regeneration from being randomly reflected from a reflection layer of an optical information recording medium, and capable of reducing the amount of noise superimposed on a regenerated image. <P>SOLUTION: The optical information recording medium is one for recording information utilizing holography. It comprises a transparent substrate, a recording layer where information is recorded by making use of an interference pattern, and a filter layer provided between the transparent substrate and the recording layer for transmitting first wavelength light and reflecting second wavelength light. Hereby, the filter layer transmits the first wavelength light (e.g., red light) and reflects the second wavelength light (e.g., green light). Hereby, the lights of two kinds of the wavelengths can be isolated, so that they are useable for independent purposes without being influenced by the respective lights. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
