7results about "Hologram recording material" patented technology

A compound represented by the following formula (1).[In the formula, n represents an integer of 1 to 3. L1 represents an optionally branched (n+1)-valent linking group, excluding linear saturated aliphatic hydrocarbon groups. X represents an oxygen atom or a nitrogen atom optionally having a substituent. R1-1 represents an aromatic ring group optionally having a substituent. m represents an integer of 3 to 5, and a plurality of R1-1 may be the same or different from each other. In the formula, the total number of carbon atoms constituting a plurality of R1-1s represented by —(R1-1)m is 25 to 70. The benzene ring having R1-1 in the formula may further have a substituent other than R1-1. R2 represents a hydrogen atom or a methyl group.]

A holographic photopolymer material, a holographic photosensitive film, a holographic optical element, and a display device are provided. The holographic photopolymer material includes a polymer matrix, photopolymerizable monomers, and a photosensitizer. An index of refraction of the photopolymerizable monomer is greater than an index of refraction of the polymer matrix. A molecular structure of the polymer matrix includes a linear structure, and branch chains of the polymer matrix include activation groups; and / or the molecular structure of the polymer matrix includes a crosslinked structure. The polymer matrix whose molecular structure is the crosslinked structure has a high glass transition temperature, so that the holographic photopolymer material has good heat resistance. The holographic photopolymer material whose molecular structure is a linear structure includes the activation groups that may form a crosslinked structure, so that an optical element made from the holographic photopolymer material can have a crosslinked structure, that is, the optical element can have good heat resistance. The holographic photopolymer material has good heat resistance, or the optical element made from the holographic photopolymer material can have good heat resistance.

The present invention relates to a holographic recording medium, a method for producing the same, and an optical element including the same. The holographic recording medium has a specific element composition ratio, and thus has excellent optical recording properties, excellent durability against heat and moisture, suitable adhesive strength to a transparent adhesive, and high transparency.

Methods and systems for forming holographic gratings are described herein. The methods and systems may decrease the amount of haze produced during exposure of a holographic recording medium. In some embodiments, the methods and systems include a holographic recording medium; a master hologram containing a grating; and a light source and moveable deflector configured to diffract light through the master hologram into the holographic medium to form a holographic interference pattern. The moveable deflector is configured to move in a direction parallel to the extending direction of the grating. Advantageously, moving the light in this direction allows the holographic interference pattern to remain stationary while there is a spatio-temporal displacement and cancellation of unwanted intensity nonuniformities.

The present invention relates to a photopolymer composition, a holographic recording medium, a method for producing the same, and an optical element including the same. The photopolymer composition contains an electron donor having a reaction energy of -25 kJ / mol to 0 kJ / mol with a photosensitive dye excited to a triplet state, and therefore not only has excellent optical recording properties such as diffraction efficiency, which is a basic physical property of a holographic recording medium, but also has excellent high-temperature aging stability before recording optical information, and can exhibit the intended optical recording properties even when stored at room temperature to high temperature for a long time, thereby providing a holographic recording medium capable of reproducing a clear image without problems such as halo.

The present invention relates to a fluorine-based compound, a photopolymerizable composition, a holographic recording medium, a method for producing the same, and an optical element including the same. The fluorine-based compound can be contained in a photopolymerizable composition to provide a holographic recording medium that not only has excellent optical recording properties but also has transparent optical properties and excellent reliability even in high temperature and high humidity environments, and an optical element including the same.

A compound represented by Formula (1) described below: [in Formula (1), A1 and A2 are a polymerizable group; n1 and n2 are an integer of 1 to 3; L1 is a single bond or an optionally branched (n1 + 1)-valent linking group; L2 is a single bond or an optionally branched (n2 + 1)-valent linking group; X is a single bond, a divalent organic group having 1 to 20 carbons, a sulfonyl group, or a divalent oxygen atom or sulfur atom; R1 and R2 are a fused aromatic ring group optionally having a substituent; and m1 and m2 are an integer of 2 to 4].