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

Abstract

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), X1 represents an oxygen atom, a nitrogen atom, a phosphorus atom, a caron atom, or a silicon atom. Y1 and Y2 each represent a benzene ring or a naphthalene ring, and both Y1 and Y2 do not represent benzene rings. R1 to R3 each represent a hydrogen or a substituent group represented by *—Z1(R4)d (* represents a bonding site). Z1 represents 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. R4 represents a hydrogen or a polymerizable substituent group.

Dependencies are inferred from the claim text.