Invention Grant
- Patent Title: Projection display device in which positions of projection lens unit and projection mirror unit relative to illumination optical systems are switched
- Patent Title (中): 投影显示装置，其中投影透镜单元和投影镜单元相对于照明光学系统的位置被切换
-
Application No.: US12104936Application Date: 2008-04-17
-
Publication No.: US07993011B2Publication Date: 2011-08-09
- Inventor: Takashi Ikeda , Hideyuki Kanayama , Yoshihiro Yokote
- Applicant: Takashi Ikeda , Hideyuki Kanayama , Yoshihiro Yokote
- Applicant Address: JP Moriguchi-shi
- Assignee: SANYO Electric Co., Ltd.
- Current Assignee: SANYO Electric Co., Ltd.
- Current Assignee Address: JP Moriguchi-shi
- Agency: Mots Law, PLLC
- Agent Marvin A. Motsenbocker
- Priority: JP2007-118523 20070427
- Main IPC: G03B21/28
- IPC: G03B21/28
Abstract:
A projection lens unit and a projection mirror unit are moved relative to an illumination optical system, between a first position where an image is projected in a shape that is longer along a direction of projection onto a projection plane and a second position where an image is projected in a shape that is longer along a direction perpendicular to the direction of projection onto the projection plane. When the projection lens unit and the projection mirror unit are located in the first position, a vertically long image is projected onto the projection plane (portrait display). In this state, when the projection lens unit and the projection mirror unit are moved to the second position, a horizontally long image is projected onto the projection plane (landscape display).
Public/Granted literature
- US20080266528A1 PROJECTION DISPLAY DEVICE Public/Granted day:2008-10-30
Information query
