Invention Grant
- Patent Title: Image display device
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Application No.: US17097626Application Date: 2020-11-13
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Publication No.: US11275251B2Publication Date: 2022-03-15
- Inventor: Akio Fukase , Mitsutaka Ide , Toshiyuki Noguchi
- Applicant: SEIKO EPSON CORPORATION
- Applicant Address: JP Tokyo
- Assignee: SEIKO EPSON CORPORATION
- Current Assignee: SEIKO EPSON CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JPJP2018-210560 20181108
- Main IPC: G02B17/08
- IPC: G02B17/08 ; G02B27/01 ; G03B33/12 ; G03H1/02

Abstract:
An image display device of the present disclosure includes an image light generating device, a first, a second, a third, and a fourth optical unit. A first intermediate image is formed between the first and the third optical unit. A pupil is formed between the second and the fourth optical unit. A second intermediate image is formed between the third and the fourth optical unit. An exit pupil is formed at an opposite side of the fourth optical unit from the third optical unit. The image light generating device includes a first, a second, a third light emitting panel, and a color synthesis element. The color synthesis element is constituted of a cross dichroic prism including a first and a second dichroic film that intersect with each other. Each of the first and the second dichroic film does not have a polarization separation characteristic.
Public/Granted literature
- US20210063753A1 IMAGE DISPLAY DEVICE Public/Granted day:2021-03-04
Information query
IPC分类:
G | 物理 |
G02 | 光学 |
G02B | 光学元件、系统或仪器 |
G02B17/00 | 有或无折射元件的具有反射面的系统 |
G02B17/08 | .折反射系统 |