| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a display screen enlargement device of a wide view angle in a simple configuration. <P>SOLUTION: A programmable display device includes a touch panel 11, a rear projection type screen 12, a Fresnel lens 13, and a liquid crystal display 14. The Fresnel lens 13 enlarges an image displayed on the liquid crystal display 14 and projects it on the rear surface of the rear projection type screen 12. A user can view the enlarged screen through the touch panel 11 from the front side of the rear projection type screen 12, and it has a wide view angle regardless of the view angle of the liquid crystal display 14. <P>COPYRIGHT: (C)2012,JPO&INPIT |
