| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a eyegrounds photographing equipment capable of photographing the image of the eyegrounds including eyegrounds blood vessels in synchronous relation to an electrocardiogram signal with the accurate and good reproducibility of a photographing condition. <P>SOLUTION: The delay time corresponding to the time lag between the pulsation of the heart and that of eyegrounds blood vessels is added to the electrocardiogram signal H of an electrocardiogram measuring instrument by a timing control circuit 15 to form a shutter timing signal ST for driving a shutter 12. This delay time is directly inputted as a numerical value in a delay time setting part 16 by an examiner or calculated from the pulsation timing of the eyegrounds blood vessels and the timing of the electrocardiogram signal which are inputted by a timing switch while observing an eyegrounds image, by operation. Further, the shutter operation signal S from a shutter button 14 is used to form a shutter timing signal ST after the shutter operation signal S becomes effective. In this case, the fastest delay timing is formed as the shutter timing signal ST after the shutter operation signal S becomes effective. <P>COPYRIGHT: (C)2003,JPO |
