Invention Grant
- Patent Title: Illumination optical system and projector
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Application No.: US15740118Application Date: 2016-06-22
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Publication No.: US10578845B2Publication Date: 2020-03-03
- Inventor: Masayuki Imaoka , Yasumasa Sawai
- Applicant: KONICA MINOLTA, INC.
- Applicant Address: JP Tokyo
- Assignee: Konica Minolta, Inc.
- Current Assignee: Konica Minolta, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Cozen O'Connor
- Priority: JP2015-131218 20150630
- International Application: PCT/JP2016/068542 WO 20160622
- International Announcement: WO2017/002685 WO 20170105
- Main IPC: G02B17/08
- IPC: G02B17/08 ; G02B5/04 ; G03B21/00 ; G02B27/09 ; G03B21/20 ; G02B19/00 ; G02B26/00
Abstract:
An illumination optical system includes a lens group, a diaphragm, and a prism unit including first to third prisms and a rotationally-asymmetrical curved reflective surface having a positive power and satisfying the conditional formula: PYa/PZa
Public/Granted literature
- US20180188512A1 Illumination Optical System And Projector Public/Granted day:2018-07-05
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 |
