PHOTOPOLYMER FILM, COMPOSITION FOR FORMING PHOTOPOLYMER FILM, HOLOGRAM RECORDING MEDIUM, AND OPTICAL DEVICE

The present invention relates to a photopolymer film, a composition for forming such a photopolymer film, a hologram recording medium containing same, and an optical element, wherein the photopolymer film comprises a base film and a recording layer, the recording layer exhibiting a predetermined maximum reduction rate in band area derived from a graph obtained by photo-thermal infrared spectroscopy (PTIR) analysis in the thickness direction from one surface of the recording layer. La présente invention concerne un film photopolymère, une composition pour former un tel film photopolymère, un support d'enregistrement d'hologramme le contenant, et un élément optique, le film photopolymère comprenant un film de base et une couche d'enregistrement, la couche d'enregistrement présentant un taux de réduction maximal prédéterminé dans une zone de bande dérivée d'un graphique obtenu par analyse par spectroscopie infrarouge photo-thermique (PTIR) dans la direction de l'épaisseur à partir d'une surface de la couche d'enregistrement. 본 발명은 기재 필름 및 기록층을 포함하며, 상기 기록층의 일면에서부터 두께 방향으로 광열 적외선 분광 분석(PTIR)한 결과로부터 도출된 그래프에서 소정의 밴드 면적 최대 감소율을 갖는 포토폴리머 필름, 이러한 포토폴리머 필름 형성용 조성물, 이를 포함하는 홀로그램 기록 매체 및 광학 소자에 관한 것이다.