The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 2005
Filed:
Jan. 04, 2002
Kazunori Suzuki, Nagoya, JP;
Kenichiro Takada, Kuwana, JP;
Kazunori Suzuki, Nagoya, JP;
Kenichiro Takada, Kuwana, JP;
Denso Corporation, Kariya, JP;
Abstract
A hologram screendisplays an image by diffracting and scattering image lightprojected from an image projection apparatus. An upward/downward light scattering device, which scatters light incident from an upward/downward specific angle range spreading obliquely upward or downward, is placed on the image projection apparatus side of a hologram devicein the hologram screen. A leftward/rightward light scattering device, which scatters light incident from a leftward/rightward specific angle range spreading obliquely leftward and rightward, is placed between the hologram deviceand the scattering device. The construction is such that the upward/downward specific angle range contains the incidence angle of the image lighton the hologram screen, and thus provides a hologram screen having good color reproducibility and which permits viewing of the background.