公开(公告)号：DE10317938A1

公开(公告)日：2003-12-04

申请号：DE10317938

申请日：2003-04-17

Applicant: DENSO CORP

Inventor： KAWAI NORITATSU ,  TAKADA KENICHIROU

IPC: G03B21/56 ,  G02B5/32 ,  G03H1/02 ,  G03H1/04

Abstract: A method for fabrication of a hologram screen displaying an image by diffracting and scattering image light projected from a slanted direction comprising superposing a first dispersion plate on a photosensitive layer, emitting nondivergent light of the first incident light, from the first dispersion plate side, emitting second incident light from the first dispersion plate side, and causing the rays of divergent light obtained by dispersion and transmission of these through the first dispersion plate to interfere with each other on the photosensitive layer. Due to this, interference fringes are recorded on the photosensitive layer and a hologram screen is fabricated. The incident direction of the first incident light on the photosensitive layer is made to substantially match with the projection direction of the image light relative to the hologram screen. Further, the incident direction of the second incident light on the photosensitive layer is made the approximate front direction.

公开(公告)号：JP2004004607A

公开(公告)日：2004-01-08

申请号：JP2003069061

申请日：2003-03-14

Applicant: DENSO CORP

Inventor： KAWAI NORITATSU ,  TAKADA KENICHIRO

IPC: G03B21/56 ,  G02B5/32 ,  G03H1/02 ,  G03H1/04

Abstract: PROBLEM TO BE SOLVED: To provide a hologram screen manufacturing method whereby a hologram screen with less luminance irregularity and and high luminance can be obtained. SOLUTION: A method is for manufacturing the hologram screen displaying an image by diffracting and scattering image light projected from a slanted direction comprises: superposing a first diffusing plate 3 on a photosensitive material 2; making first incident light 41 of non-diffused light enter from the direction of the first diffusing plate 3; making second incident light 42 enter from the direction of the first diffusing plate 3; and causing the rays of these diffused light obtained by diffuse transmission of these through the first diffusing plate 3 to interfere with each other on the photosensitive material 2. Thereby, interference fringes are recorded on the photosensitive material 2 to manufacture the hologram screen. The incident direction of the first incident light 41 on the photosensitive material 2 is made approximately the same as the projection direction of the image light relative to the hologram screen. The incident direction of the second incident light 42 on the photosensitive material 2 is made the approximate front direction. COPYRIGHT: (C)2004,JPO