Optical characteristic measuring device and optical characteristic measuring method
AssigneeNational University Corporation Kagawa University
InventorIchiro Ishimaru
Life of this patent
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Abstract
A light source, a standing wave forming unit, a detector, and an absorbance calculating unit. The light source irradiates a sample with light. The standing wave forming unit forms, in the sample, an acoustic standing wave perpendicular to a surface of the sample. A node of the acoustic standing wave is positioned at a predetermined distance from the surface of the sample, the light from the light source entering the surface of the sample. The detector detects light emitted from the surface of the sample, and is disposed on the surface of the sample on a side where the light source is disposed. The absorbance calculating unit obtains absorbance.
Claims17
An optical characteristic measuring device comprising:
- a light source configured to irradiate a test sample with light;
- a standing wave forming unit configured to form an acoustic standing wave in the test sample, the acoustic standing wave being perpendicular to a region where the light from the light source enters on a surface of the test sample, a node of the acoustic standing wave being positioned at a predetermined distance from the region, the node increasing a local density of the test sample and creating a virtual reflection surface that reflects a portion of the light;
- a detector configured to detect the reflected portion of the light coming out of the surface of the test sample, the detector being disposed on a side where the light source is disposed with respect to the region;
- and
- an optical characteristic calculator configured to obtain an optical characteristic of the test sample based on a result detected by the detector when the light source irradiates the test sample with light.
An optical characteristic measuring method comprising:
- a first step of detecting light coming out of a surface of a test sample when forming, in the test sample, an acoustic standing wave perpendicular to a predetermined region on the surface of the test sample and causing light from a light source to enter the test sample from the predetermined region, a node of the acoustic standing wave being positioned at a predetermined distance from the region;
- a second step of detecting light coming out of the surface of the test sample when the light from the light source is caused to enter the test sample from the predetermined region in a state where the acoustic standing wave is not formed in the test sample;
- and
- a third step of obtaining an optical characteristic of the test sample based on a result detected in the first step and a result detected in the second step.
An optical characteristic measuring method comprising:
- a first step of detecting light coming out of a surface of a test sample when forming, in the test sample, an acoustic standing wave perpendicular to a predetermined region of the test sample and causing light from a light source to enter the test sample from the predetermined region of the test sample, a node of the acoustic standing wave being positioned at a predetermined distance from the region;
- a second step of detecting light coming out of a surface of a control sample when forming, in the control sample, an acoustic standing wave perpendicular to a predetermined region of the control sample and causing light from the light source to enter the control sample from the predetermined region of the control sample, a node of the acoustic standing wave being positioned at a predetermined distance from the region;
- and
- a third step of an optical characteristic of the test sample based on a result detected in the first step and a result detected in the second step.
Dependencies are inferred from the claim text.