ACOUSTIC WAVE DETECTOR AND ACOUSTIC WAVE MEASUREMENT APPARATUS
First Claim
1. An acoustic wave detector for detecting an acoustic wave generated by light emitted onto a subject, comprising:
- a transducer; and
a light reflecting member which is positioned between said transducer and a subject surface that is irradiated with the light, and which reflects scattered light on the subject surface, whereinsaid light reflecting member includes a first reflecting surface and a second reflecting surface positioned closer to said transducer than said first reflecting surface, anda distance between said first reflecting surface and said second reflecting surface is an odd multiple of a half wavelength of a predetermined wavelength included in an acoustic wave generated from said light reflecting member by the scattered light.
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Accused Products
Abstract
An acoustic wave detector includes: a transducer; and a light reflecting member which is positioned between the transducer and a subject surface that is irradiated with the light, and which reflects scattered light on the subject surface. The light reflecting member includes a first reflecting surface and a second reflecting surface positioned closer to the transducer than the first reflecting surface, and a distance between the first reflecting surface and the second reflecting surface is an odd multiple of a half wavelength of a predetermined wavelength included in an acoustic wave generated from the light reflecting member by the scattered light.
18 Citations
9 Claims
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1. An acoustic wave detector for detecting an acoustic wave generated by light emitted onto a subject, comprising:
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a transducer; and a light reflecting member which is positioned between said transducer and a subject surface that is irradiated with the light, and which reflects scattered light on the subject surface, wherein said light reflecting member includes a first reflecting surface and a second reflecting surface positioned closer to said transducer than said first reflecting surface, and a distance between said first reflecting surface and said second reflecting surface is an odd multiple of a half wavelength of a predetermined wavelength included in an acoustic wave generated from said light reflecting member by the scattered light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9)
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8. An acoustic wave detector for detecting an acoustic wave generated by light emitted onto a subject, comprising:
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a transducer; and a light reflecting member which is positioned between said transducer and a subject surface that is irradiated with the light, and which reflects scattered light on the subject surface, wherein said light reflecting member is constituted by a metal layer having a sine wave-shaped cross-section, and an amplitude of the sine wave is an odd multiple of a half wavelength of a predetermined wavelength included in an acoustic wave generated from said light reflecting member by the scattered light.
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Specification