PORTABLE PROBE FOR PHOTOACOUSTIC TOMOGRAPHY AND REAL-TIME PHOTOACOUSTIC TOMOGRAPHY DEVICE
First Claim
1. A probe for photoacoustic tomography comprising:
- a Powell lens receiving the small diameter parallel light so as to generate a line beam with uniform energy distribution;
a lens making the line beam pass therethrough such that the line beam has a predetermined width and a reduced thickness so as to be line-focused at a target area; and
an acoustic measurement unit receiving an acoustic wave outputted from the target area,wherein the line beam outputted from the Powell lens is a beam having a predetermined thickness and a width increased by a predetermined angle with respect to the center line of a plane, the lens has a cylinder lens shaped of a cylinder having a rectangular cross-section and having an output end having a rectangular shape when viewed from one side and a convex shape when viewed from the other side, and the cylinder lens allows the line beam outputted from the Powell lens to pass therethrough to generate parallel light having a predetermined width and a predetermined thickness in a beam traveling direction.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to: a portable probe for photoacoustic tomography, capable of performing line-by-line scanning or area-by-area scanning by using a small number of light inputs; and a real-time photoacoustic tomography device. The probe for photoacoustic tomography includes: a lens receiving light inputs from an optical fiber so as to make the same proceed as small diameter parallel light; a Powell lens receiving the small diameter parallel light and generating a line beam of a predetermined thickness, and allowing energy dispersed on a line to be uniform on the entire line; a lens making the line beam pass therethrough such that the line beam has a predetermined width and a reduced thickness so as to be line-focused at a target area; an acoustic reflection glass for separating, from a light path, an acoustic wave outputted from the target area; and an acoustic measurement unit for measuring acoustic strength.
6 Citations
25 Claims
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1. A probe for photoacoustic tomography comprising:
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a Powell lens receiving the small diameter parallel light so as to generate a line beam with uniform energy distribution; a lens making the line beam pass therethrough such that the line beam has a predetermined width and a reduced thickness so as to be line-focused at a target area; and an acoustic measurement unit receiving an acoustic wave outputted from the target area, wherein the line beam outputted from the Powell lens is a beam having a predetermined thickness and a width increased by a predetermined angle with respect to the center line of a plane, the lens has a cylinder lens shaped of a cylinder having a rectangular cross-section and having an output end having a rectangular shape when viewed from one side and a convex shape when viewed from the other side, and the cylinder lens allows the line beam outputted from the Powell lens to pass therethrough to generate parallel light having a predetermined width and a predetermined thickness in a beam traveling direction. - View Dependent Claims (3, 4, 5, 6, 7, 23)
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2. (canceled)
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8. A probe for photoacoustic tomography comprising:
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a Powell lens receiving a light input as small diameter parallel light so as to generate a line beam having a uniform energy distribution; a lens allowing the line beam to pass therethrough so as to generate parallel light having a predetermined width and a predetermined thickness; a light path changing unit along the parallel light to pass therethrough so as to be area-focused at a target area; and an acoustic measurement unit receiving an acoustic wave outputted from the target area, wherein the line beam outputted from the Powell lens is a beam having a predetermined thickness and a width increased by a predetermined angle with respect to the center line of a plane, the lens has a cylinder lens shaped of a cylinder having a rectangular cross-section and having an output end having a rectangular shape when viewed from one side and a convex shape when viewed from the other side, and the cylinder lens allows the line beam outputted from the Powell lens to pass therethrough to generate parallel light having a predetermined width and a predetermined thickness in a beam traveling direction. - View Dependent Claims (10, 11, 12, 13, 14, 15, 25)
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9. (canceled)
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16. A probe for photoacoustic tomography comprising:
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a pair of Powell lenses spaced a predetermined distance apart from each other and receiving light inputs as parallel light beams so as to generate line beams, respectively; a cylinder lens allowing the respective line beams to pass therethrough so as to generate the respective parallel light beams having a predetermined width and a predetermined thickness; a pair of light path changing members changing light paths of the parallel light beams to then be area-focused at the target area; and an acoustic measurement unit receiving an acoustic wave outputted from the target area, wherein the line beam outputted from the Powell lens is a beam having a predetermined thickness and a width increased by a predetermined angle with respect to the center line of a plane, the lens has a cylinder lens shaped of a cylinder having a rectangular cross-section and having an output end having a rectangular shape when viewed from one side and a convex shape when viewed from the other side, and the cylinder lens allows the line beam outputted from the Powell lens to pass therethrough to generate parallel light having a predetermined width and a predetermined thickness in a beam traveling direction. - View Dependent Claims (17, 18, 19)
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20-22. -22. (canceled)
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24. (canceled)
Specification