Invention Grant
US07835050B2 Optical holographic device with a hologram optical element on an area smaller than an irradiation area, holographic image display device and head mounted display with a hologram optical element on an area smaller than an irradiation area
有权
在比照射区域小的区域具有全息光学元件的光学全息装置，在比照射区域小的区域上具有全息光学元件的全息图像显示装置和头戴显示器
- Patent Title: Optical holographic device with a hologram optical element on an area smaller than an irradiation area, holographic image display device and head mounted display with a hologram optical element on an area smaller than an irradiation area
- Patent Title (中): 在比照射区域小的区域具有全息光学元件的光学全息装置，在比照射区域小的区域上具有全息光学元件的全息图像显示装置和头戴显示器
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Application No.: US11492132Application Date: 2006-07-24
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Publication No.: US07835050B2Publication Date: 2010-11-16
- Inventor: Yasushi Tanijiri , Yoshie Shimizu , Tetsuya Noda , Ichiro Kasai
- Applicant: Yasushi Tanijiri , Yoshie Shimizu , Tetsuya Noda , Ichiro Kasai
- Applicant Address: JP Tokyo
- Assignee: Konica Minolta Photo Imaging, Inc.
- Current Assignee: Konica Minolta Photo Imaging, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Sidley Austin LLP
- Priority: JP2005-213823 20050725
- Main IPC: G03H1/00
- IPC: G03H1/00
Abstract:
A hologram optical element is formed on a substrate so as to make an optical device. The hologram optical element is formed in an area smaller than an irradiation area of a beam for reproduction such as image light or object light on the substrate. Supposing that the beam for reproduction is made of a center beam having intensity higher than 50% of center intensity and other peripheral beam, the hologram optical element is formed on the substrate in a size for diffracting only the center beam so that a flare or a ghost can be relieved without using additional optical elements such as a shading plate.
Public/Granted literature
- US20070019264A1 Optical device, image display device and head mounted display Public/Granted day:2007-01-25
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