发明名称 |
Self deploying magnifier for a portable computer display screen |
摘要 |
The invention makes the size of the apparent image of the display screen of the display screen larger than the real size. A flat optical magnifier such as a lens of the fresnel type is positioned in an optically enhancing location between the operator and the display screen so that the apparent image at the operator side of the magnifier is greater than the actual image that is present on the display screen. A mechanism is provided for a notebook type portable computer that is passive to a user, folds into the case when the display screen closes over the keyboard and positions a fresnel lens, coplanar with and at a fixed distance from the display screen, when the notebook computer is opened and remains at that fixed distance as the display screen moves to maximum travel.
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申请公布号 |
US5991150(A) |
申请公布日期 |
1999.11.23 |
申请号 |
US19970926176 |
申请日期 |
1997.09.09 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
CHIU, GEORGE LIANG-TAI;CIPOLLA, THOMAS MARIO;DOANY, FUAD ELIAS;KARIDIS, JOHN PETER;SINGH, RAMA NAND |
分类号 |
G06F1/16;(IPC1-7):G06F1/16;H05K7/16 |
主分类号 |
G06F1/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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