An imaging probe is suitable to be inserted into a tubular object under test so as to imaging an interior of the tubular object under test. The imaging probe includes a light source excitation assembly, an ultrasonic transducer and a receiver. The light source excitation assembly includes a pulsed laser, a first optical fiber and a cone-shaped reflecting member. The pulsed laser is suitable to generate a pulsed light energy. A first incident end of the first optical fiber receives the pulsed light energy, and the pulsed light energy leaves the first optical fiber via a first emitting end of the first optical fiber. The cone-shaped reflecting member is suitable to reflect the pulsed light energy emitting from the first emitting end. After that, the pulsed light energy annularly illuminates the inner wall of the object under test so as to produce a photoacoustic signal. The ultrasonic transducer is suitable to generate an ultrasonic signal. The ultrasonic signal annularly illuminates the inner wall of the object under test so as to produce an ultrasonic echo signal. The receiver receives the photoacoustic signal and the ultrasonic echo signal.一種影像探頭,適於伸入管狀待測物內,以感測管狀待測物內橫截面的影像,影像探頭包括光源激發組件、超音波發射器及接收器。光源激發組件包括脈衝雷射、第一光纖及錐狀反射元件。脈衝雷射適於發射脈衝光能量。第一光纖的第一入射端接收脈衝光能量,且脈衝光能量由第一光纖的第一出射端出射。錐狀反射元件適於反射由第一出射端出射的脈衝光能量,使脈衝光能量環形照射於管狀待測物的內壁,以產生光聲訊號。超音波發射器適於發射超音波訊號,超音波訊號環形照射於管狀待測物的內壁,以產生超音波回波訊號。接收器接收光聲訊號與超音波回波訊號。100...影像探頭110...光源激發組件112...脈衝雷射112a...脈衝光能量113...第一光纖113a...第一入射端113b...第一出射端114...錐狀反射元件114a...漸縮端120...超音波發射器122...超音波訊號130...接收器132...接收部133...可調變雷射134...第二光纖134a...第二入射端134b...第二出射端134c...環形彎折段135...微型環136...光感測器
