发明名称 |
Distance measuring method and image input device with distance measuring function |
摘要 |
A distance measuring technology is capable of stably and accurately performing measurement of the distance to the distance to an object without use of a highly accurate focus control mechanism. The distance measurement is performed by an apparatus having a mask for restricting light so as to pass light through two or more different light passing positions; a lens system for focusing the light that has passed through the mask; an image taking-in means for taking in images from the light focused by the lens system; and a distance calculating unit for calculating a distance from an imaging element to an object using the taken-in images. The mask restricts the light so that the light is able to pass through only specified positions.
|
申请公布号 |
US6738131(B2) |
申请公布日期 |
2004.05.18 |
申请号 |
US20020163572 |
申请日期 |
2002.06.07 |
申请人 |
HITACHI, LTD. |
发明人 |
TANABATA TAKANARI;NAKASHIMA KEISUKE;KONISHI YOSHIHARU;MATSUYAMA TAKASHI |
分类号 |
G01B11/00;G01B7/02;G01C3/06;G01C3/08;G01S17/08;G02B7/34;G06T1/00;H04N1/19;(IPC1-7):G01C3/08 |
主分类号 |
G01B11/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|