Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8950870 | Projection display device for projecting an input unit image | Seung Gyu Lee, Sang Sik Jeong, Oh Jin Kweon | 2015-02-10 |
| 8633892 | Projection display device having a light combining unit | Seung Gyu Lee, Sang Sik Jeong, Oh Jin Kweon | 2014-01-21 |
| 7425074 | Display device and display method | Hee Jong Moon | 2008-09-16 |
| 7188955 | Projection optical system | — | 2007-03-13 |
| 7172287 | Reflective illuminating optical system | — | 2007-02-06 |
| 7031066 | Integrator of optical device | Jong Myoung Park | 2006-04-18 |
| 6927910 | Integrator, polarization conversion device, and display apparatus using the same | — | 2005-08-09 |
| 6847412 | Illumination system in liquid crystal projector | Man Ho Na | 2005-01-25 |
| 6831788 | Polarization beam splitter and projection display apparatus using the same | — | 2004-12-14 |