BRIEF DESCRIPTION OF THE DRAWINGS
The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description made with reference to the accompanying drawings. In the drawings:
FIG. 1A is a plan view showing a receiving element of an ultrasonic sensor, and FIG. 1B is a cross-sectional view taken along line IB-IB in FIG. 1A;
FIG. 2A is a plan view showing the ultrasonic sensor mounted to an automobile, and FIG. 2B is a cross-sectional view shown from the arrow IIB direction in FIG. 2A;
FIG. 3 is an enlarged view of a part of FIG. 2B;
FIGS. 4A-4C are cross-sectional views showing modifications of a member for transmitting an oscillation from a transmitting portion to an oscillating portion;
FIGS. 5A and 5B are cross-sectional views showing modifications of a member for transmitting an oscillation from a transmitting portion to an oscillating portion;
FIGS. 6A-6C are plan views showing modified receiving portions, and FIGS. 6D-6F are cross-sectional views showing the modified receiving portions respectively corresponding to FIGS. 6A-6C; and
FIGS. 7A and 7B are cross-sectional views showing modified arrangements of receiving elements.
Patent Application
20070157731
