| 摘要 |
<p>An ultraviolet radiation dosimeter comprises a sensor (12) for producing a signal representative of the intensity of ultraviolet radiation received by the sensor, and a keypad (13) for entering parameters corresponding to the type of skin of a user, the protection factor of a sun protection product used by the user, and also a degree of previously accumulated tan of a user. A microprocessor calculates an estimate of a maximum permissible dose of ultraviolet radiation according to the entered parameters and a suitable exposure time determined from the estimate of the maximum permissible dose and the intensity of ultraviolet radiation sensed by the sensor is displayed on a display (14). The dosimeter may also have an alarm for alerting a user when the time suitable for exposure is about to be or has been exceeded.</p> |
