Abstract: An optical film has multi-coated layers. Diffusion layers are used to scatter light. Each diffusion layer has an interface microstructure. A condensing optical layer is used to concentrating light. A design of a multi-coating technology is thus used for scattering and concentrating light. By integrating scattering and concentrating materials in a single optical film, cost is effectively reduced. By using diffusion layers having interface microstructures, interface-dominating mechanism, not only hybrid optical performance with luminance and haze is effectively enhanced; but also quality variations owing to particles added or film warp and scoring on the beneath optical film owing to particles coated are reduced.

Abstract: An optical film has multi-coated layers. Diffusion layers are used to scatter light. Each diffusion layer has an interface microstructure. A condensing optical layer is used to concentrating light. A design of a multi-coating technology is thus used for scattering and concentrating light. By integrating scattering and concentrating materials in a single optical film, cost is effectively reduced. By using diffusion layers having interface microstructures, interface-dominating mechanism, not only hybrid optical performance with luminance and haze is effectively enhanced; but also quality variations owing to particles added or film warp and scoring on the beneath optical film owing to particles coated are reduced.

Abstract: An optical film has symmetrical arrangement light-collecting units. The light-collecting units can be extended for several times. The light-collecting unit has apex angles and base angles with different degrees. Thus, a uniform luminous flux and a good light intensity are obtained for the optical film.

Abstract: An optical film has symmetrical arrangement light-collecting units. The light-collecting units can be extended for several times. The light-collecting unit has apex angles and base angles with different degrees. Thus, a uniform luminous flux and a good light intensity are obtained for the optical film.

Abstract: Materials for optical recording media are disclosed. Specifically, the materials are metal chelate compounds of azo dyes, which are formed from sulfamoylated m-diaminobenzene compounds and benzene ring-containing azo compounds. Further, the invention provides an optical recording medium, characterized in that said metal chelate compounds of azo dyes are employed onto the optical recording medium to form a recording layer. The invention also discloses a process for the production of an optical recording medium.

Abstract: Materials for optical recording media are disclosed. Specifically, the materials are metal chelate compounds of azo dyes, which are formed from sulfamoylated m-diaminobenzene compounds and benzene ring-containing azo compounds. Further, the invention provides an optical recording medium, characterized in that said metal chelate compounds of azo dyes are employed onto the optical recording medium to form a recording layer. The invention also discloses a process for the production of an optical recording medium.

Abstract: The present invention provides a optical media with no shape limitation and, by deposing a position mark in a recording layer and reflection layer, an encryption setup and a special shape can be obtained for more diversification in use.

Abstract: A method of injection molding an optical recording medium substrate of 0.4 mm thickness. The method comprises: applying a mold clamping force of predetermined level after closing movable and stationary mold halves to define a mold cavity; injecting a given quantity of molten plastic material into the mold cavity at a first higher injection velocity and a second lower injection velocity; increasing mold clamping force after the injection at the first injection velocity so that the mold clamping force is 25 to 30 tons for a first predetermined period of time after the completion of the injection at the second injection velocity, and then decreasing the mold clamping force to between 15 to 25 tons for a second predetermined period of time; and after the completion of the injection of the molten material, maintaining an injection holding pressure between 10 to 15 kg/cm2 and simultaneously cooling the molten material to form a substrate.

Abstract: Materials for optical recording media are disclosed. Specifically, the materials are metal chelate compounds of azo dyes, which are formed from sulfamoylated m-diaminobenzene compounds and benzene ring-containing azo compounds. Further, the invention provides an optical recording medium, characterized in that said metal chelate compounds of azo dyes are employed onto the optical recording medium to form a recording layer. The invention also discloses a process for the production of an optical recording medium.

Abstract: A recordable optical recording medium, particularly a recordable high-density optical recording medium is disclosed. The optical recording medium comprises a substrate and a recording layer formed on said substrate, wherein said recording layer contains at least one laser beam absorbing dyes of formula (I): wherein Q is phenyl or naphthyl substituted by C1-4alkoxy; R1 and R2, independently of each other, are C1-8alkyl; Y is hydrogen or C1-4alkoxy; and X− is an anion.

Abstract: The present invention provides a rewritable compact disk (CD-RW) having determining function for record data comprising a transparent substrate, a recording layer, a reflection layer, a protection layer, and a labeling layer, the improvement includes an uncovered scale portion located in said labeling layer for determining record data of said CD-RW from a side of said labeling layer.