| 摘要 |
<p>The invention refers to a method and to a high maintenance device for displaying a stable image spatially projected under the form of a circular lighted strip carrying the information. A column of luminiscent diodes having an improved radiation characteristic is fastened with an electronic circuit which generates code sequences and a circuit detecting the angular position mounted on the axle of a rotational motor and are driven in a rotational motion at a constant angular speed. According to the angle of the inclination to the axle of the motor, the diodes column, describes a revolution surface which can be cylindrical, conical or circular ring.</p> |
