发明名称 |
Optical two-dimensional position sensor in a control device for automotive applications |
摘要 |
An optical two-dimensional position sensor including a selective optical unit which faces, and is displaceable relative to, an integrated device. The selective optical unit is formed by a polarized light source and a filter with four quadrants which permits passage of light through two quadrants only. The selective optical unit is attached to a control lever such as to translate in a plane along a first direction and a second direction, and to pivot around an axis which is orthogonal to the preceding directions. In a transparent package, the integrated device comprises a first group of sensor elements which are spaced along the first direction, a second group of sensor elements which are spaced along the second direction and a third group of sensor elements which detect an angular position of the selective optical unit. Electronics which are integrated with the sensor elements generates a code which is associated with each position which is assumed by the selective optical unit and a control signal which corresponds to a function to be performed.
|
申请公布号 |
US6153875(A) |
申请公布日期 |
2000.11.28 |
申请号 |
US19980085534 |
申请日期 |
1998.05.27 |
申请人 |
STMICROELECTRONICS S.R.L. |
发明人 |
VILLA, FLAVIO FRANCESCO;VIGNA, BENEDETTO;FERRARI, PAOLO |
分类号 |
G01D5/34;(IPC1-7):G01D5/34 |
主分类号 |
G01D5/34 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|