Sony Group Corporation

Hisaya Hara

Takahiro Ohe

Kenshiro Kawasaki

Eri Igarashi

Daisuke Hobara

To provide a photosensitive composition capable of further improving diffraction characteristics. The present technology provides a photosensitive composition including: at least a compound represented by the following general formula (1); a binder resin; and a photoinitiator. In the general formula (1), Xrepresents an oxygen atom, a nitrogen atom, a phosphorus atom, a caron atom, or a silicon atom. Yand Yeach represent a benzene ring or a naphthalene ring, and both Yand Ydo not represent benzene rings. Rto Reach represent a hydrogen or a substituent group represented by *—Z(R)(* represents a bonding site). Zrepresents a single bond, a saturated hydrocarbon group having a valence of 2 or higher, or an unsaturated hydrocarbon group having a valence of 2 or higher, and the saturated hydrocarbon group or the unsaturated hydrocarbon group may have an ether bond and/or a thioether bond. Rrepresents a hydrogen or a polymerizable substituent group.

Photosensitive composition, hologram recording medium using the same, hologram optical element, and method of forming hologram diffraction grating

To provide a hologram recording composition that can further improve diffraction characteristics and transparency of a hologram. The present technology provides a hologram recording composition containing a heteropoly acid, a photopolymerizable monomer, a photopolymerization initiator, and a sensitizing dye having absorption in a visible light region in the presence of an acid. The present technology also provides a hologram recording medium including at least a photocurable resin layer containing a heteropoly acid, a photopolymerizable monomer, a photopolymerization initiator, and a sensitizing dye having absorption in a visible light region in the presence of an acid. Furthermore, the present technology also provides a diffraction optical element using the hologram recording medium. Moreover, the present technology also provides an optical device, an optical component, and an image display device using the diffraction optical element.

Hologram recording composition, hologram recording medium, diffraction optical element, and optical device, optical component, and image display device using diffraction optical element

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TOKYO, Japan

Hisaya Hara