JPH0233356U

JPH0233356U -

Info

Publication number: JPH0233356U
Application number: JP11168088U
Authority: JP
Priority date: 1988-08-26
Filing date: 1988-08-26
Publication date: 1990-03-02

Description

[Brief explanation of drawings]

第１図は本考案の実施例に係る装置の全体図、
第２図は本考案の実施例に係る光源の詳細図、第
３図は本考案の光学式超音波振動検出器の詳細図
、第４図は本考案の超音波信号再生器の詳細図、
第５図は本考案の斜角超音波検出法の原理図、第
６図は本考案の斜角超音波検出法の波形処理例を
示す図、第７図は従来の光学式超音波プローブの
全体図である。１……被検体表面、２……超音波の伝播方向、
４ａ〜４ｈ……光パターン用マスク、５ａ，５ｂ
……反射鏡、５ｃ……ハーフミラー、７ａ〜７ｈ
……受光器、８……電気信号遅延器、８ａ〜８ｈ
……遅延素子、９……加算器、１０……方向フイ
ルタ。 FIG. 1 is an overall view of an apparatus according to an embodiment of the present invention;
FIG. 2 is a detailed diagram of the light source according to the embodiment of the present invention, FIG. 3 is a detailed diagram of the optical ultrasonic vibration detector of the present invention, and FIG. 4 is a detailed diagram of the ultrasonic signal regenerator of the present invention.
Fig. 5 is a diagram showing the principle of the oblique ultrasonic detection method of the present invention, Fig. 6 is a diagram showing an example of waveform processing of the oblique ultrasonic detection method of the present invention, and Fig. 7 is a diagram of the conventional optical ultrasonic probe. This is an overall diagram. 1... Subject surface, 2... Ultrasonic propagation direction,
4a to 4h...Light pattern mask, 5a, 5b
...Reflector, 5c...Half mirror, 7a to 7h
...Receiver, 8...Electrical signal delay device, 8a to 8h
... Delay element, 9 ... Adder, 10 ... Directional filter.

Claims

[Scope of utility model registration request]

an optical ultrasonic vibration detector using a light source that generates laser light having two different frequencies and orthogonal polarization components and a plurality of heterodyne interference;
an ultrasonic signal regenerator that reproduces a temporal waveform of ultrasonic vibration from an electric signal generated from the detector, a plurality of electric signal delayers that delay the temporal waveform by a certain period of time, and an output signal from the electric signal delayer. An ultrasonic probe characterized in that it has selective detectability with respect to the direction of arrival of ultrasonic waves by being equipped with a multiplier that multiplies the ultrasonic waves.