| 摘要 |
<p>PROBLEM TO BE SOLVED: To perform vascular flow measurement by detecting Doppler shift with simple constitution and to efficiently detect variation of speckles. SOLUTION: Irradiating light I reaches an eyeground R through the center of a pupil P and the reflected light from the eyeground R passes the circumference of the pupil P is received by a receiver. Two of reflected lights L make an angle 6 and interfere with each other and vascular flow information can be obtained from a beat signal of frequencies responding to the angleθ.</p> |
