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公开(公告)号：US12025797B2
公开(公告)日：2024-07-02
申请号：US17414653
申请日：2019-12-17
发明人： Zhisheng Yun , Hao Wu , Stephen J. Willett , Craig R. Schardt , Stephan J. Pankratz , Gilles J. Benoit
IPC分类号： G02B27/01 , G02B27/28 , G02F1/1335
CPC分类号： G02B27/0101 , G02B27/0149 , G02B27/286 , G02F1/133536 , G02B2027/015
摘要： An optical system, including a reflective polarizer, and a display and a mirror disposed on a same side of, and generally facing, the reflective polarizer. The reflective polarizer may transmit at least 80% of incident light having a first polarization state and may reflect at least 80% of incident light having a second polarization state, and the mirror may reflect at least 80% of the incident light for each of the first and second polarization states. The central locations of the display, reflective polarizer, and mirror may define a midplane which includes first, second, and third regions, such that the first region includes portions of the image rays that pass at least once across the region, the second region includes portions of the image rays that pass at least twice across the region, and the third region includes portions of the image rays that pass three times across the region. The first, second, and third regions may have respective areas A1, A2, and A3, such that A3/A2 is greater than or equal to about 0.20, or 0.22, or 0.24, or 0.26, or 0.28, or 0.30.
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公开(公告)号：US20220197024A1
公开(公告)日：2022-06-23
申请号：US17595046
申请日：2019-06-06
发明人： Zhisheng Yun , Stephen J. Willett , Craig R. Schardt , Gilles J. Benoit , Keith M. Kotchick , Ryan C. Shirk , David A. Rosen , Hao Wu
摘要： An optical system includes a reflective polarizer (20), and a display (10), first mirror (30a), and second mirror (30b) disposed on a same side of the reflective polarizer (20). The reflective polarizer (20) transmits an image emitted by the display (10) after the image is reflected by the first and second mirrors (30a, 30b). A mid-plane defined by intersection points between an optical axis of the system and the display (10), reflective polarizer (20), and second mirror (30b) has one-pass through four-pass regions having respective areas, A1 through A4. The one-pass region includes portions of the emitted image rays (15) that pass at least one time across the one-pass region, the two-pass region includes portions of the image rays (15) that pass at least two times across the two-pass region, the three-pass region includes portions of the image rays (15) that pass at least three times across the three-pass region, and the four-pass region includes portions of the image rays (15) that pass four times across the four-pass region, such that the ratio A4/A3 is between approximately 0.15 and approximately 0.40.
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公开(公告)号：US20220057632A1
公开(公告)日：2022-02-24
申请号：US17414653
申请日：2019-12-17
发明人： Zhisheng Yun , Hao Wu , Stephen J. Willett , Craig R. Schardt , Stephan J. Pankratz , Gilles J. Benoit
IPC分类号： G02B27/01 , G02B27/28 , G02F1/1335
摘要： An optical system, including a reflective polarizer, and a display and a mirror disposed on a same side of, and generally facing, the reflective polarizer. The reflective polarizer may transmit at least 80% of incident light having a first polarization state and may reflect at least 80% of incident light having a second polarization state, and the mirror may reflect at least 80% of the incident light for each of the first and second polarization states. The central locations of the display, reflective polarizer, and mirror may define a midplane which includes first, second, and third regions, such that the first region includes portions of the image rays that pass at least once across the region, the second region includes portions of the image rays that pass at least twice across the region, and the third region includes portions of the image rays that pass three times across the region. The first, second, and third regions may have respective areas A1, A2, and A3, such that A3/A2 is greater than or equal to about 0.20, or 0.22, or 0.24, or 0.26, or 0.28, or 0.30.
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