公开(公告)号：US20220159234A1

公开(公告)日：2022-05-19

申请号：US17667290

申请日：2022-02-08

申请人： IMAX Corporation

发明人： Barry Silverstein ,  Andrew F. Kurtz ,  Gary E. Nothhard ,  Steven Charles Read ,  Anton Leonard Baljet

IPC分类号： H04N13/363 ,  H04N13/337

摘要： A projection system includes a projection lens to project image light along an image light path towards a port window and to redirect a portion of the image light away from the image light path as result of being scattered or reflected away from the image light path. The projection system includes a port window for transmitting projected image light from the projection lens. The port window has a surface for redirecting a portion of the projected image light as result of being scattered or reflected away from the image light path. The projection system includes an enclosure positioned between the port window and the projection lens to surround the image light path between the port window and the projection lens. The enclosure absorbs the portion of the image light redirected by the projection lens and absorbs the portion of the projected image light redirected by the surface.

公开(公告)号：US12047553B2

公开(公告)日：2024-07-23

申请号：US17667290

申请日：2022-02-08

申请人： IMAX Corporation

发明人： Barry Silverstein ,  Andrew F. Kurtz ,  Gary E. Nothhard ,  Steven Charles Read ,  Anton Leonard Baljet

IPC分类号： H04N13/363 ,  H04N13/337

CPC分类号： H04N13/363 ,  H04N13/337

摘要： A projection system includes a projection lens to project image light along an image light path towards a port window and to redirect a portion of the image light away from the image light path as result of being scattered or reflected away from the image light path. The projection system includes a port window for transmitting projected image light from the projection lens. The port window has a surface for redirecting a portion of the projected image light as result of being scattered or reflected away from the image light path. The projection system includes an enclosure positioned between the port window and the projection lens to surround the image light path between the port window and the projection lens. The enclosure absorbs the portion of the image light redirected by the projection lens and absorbs the portion of the projected image light redirected by the surface.

公开(公告)号：US20210168352A1

公开(公告)日：2021-06-03

申请号：US16071136

申请日：2017-01-25

申请人： IMAX Corporation

发明人： Barry Silverstein ,  Andrew F. Kurtz ,  Gary E. Nothhard ,  Steven Charles Read ,  Anton Leonard Baljet

IPC分类号： H04N13/363 ,  H04N13/337

摘要： A projection system can direct stereo image content to a display surface using an internally located stereo polarization modulator while avoiding intra-frame contrast degradation from using a stereo polarization modulator. In one example, the stereo polarization modulator is positioned between a spatial light modulator device and imaging optics in the projection system. The imaging optics can prevent part of the imaged light scattered by the stereo polarization modulator from being projected by the projection system, while allowing other light to be projected. Doing so can reduce or avoid intra-frame contrast degradation of the projected imaged light that may otherwise occur because of the presence of the stereo polarization modulator. In this or as a separate example, the projection system can include an enclosure between a port window and a projection lens to absorb the portion of the light scattered by the stereo polarization modulator.