Measuring device and glucose concentration measurement method of the measuring device
First Claim
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1. A method of measuring a glucose concentration of a measuring device comprising:
- generating a first beam including polarizing components, which are applied by a polarizer;
generating a second beam which is a wavelength swept laser beam having a coherence length previously set;
sending a mixed beam obtained by mixing the first and second beams to an eye in a first direction;
measuring a net optical path length by interference between a reflection beam which is reflected from a reference reflector and a first output beam being output returning from the eye in a first direction, wherein the measuring the net optical path length comprises;
generating an interference beam by interference between the first output beam and the reflection beam;
measuring an angle of a surface of the lens with respect to an in incident direction using an optical coherence tomography signal included in the interference beam; and
estimating the net optical path length using the angle and at least one of optical path length between reflection surfaces;
measuring the rotation amount of a polarization plane from a second output beam being output in a second direction having a specific angle with respect to the first direction; and
measuring a glucose concentration of an aqueous humor on the basis of the net optical path length and the rotation amount of the polarization plane.
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Abstract
The inventive concept relates to a measuring device. The measuring device irradiates a first beam including a polarization component and a second beam which is a wavelength swept laser having a coherence length previously set and can measure a glucose concentration of an aqueous humor by measuring an optical path length and the rotation amount of a polarization plane respectively from a first output beam and a second output beam being output from an eye.
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Citations
7 Claims
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1. A method of measuring a glucose concentration of a measuring device comprising:
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generating a first beam including polarizing components, which are applied by a polarizer; generating a second beam which is a wavelength swept laser beam having a coherence length previously set; sending a mixed beam obtained by mixing the first and second beams to an eye in a first direction; measuring a net optical path length by interference between a reflection beam which is reflected from a reference reflector and a first output beam being output returning from the eye in a first direction, wherein the measuring the net optical path length comprises; generating an interference beam by interference between the first output beam and the reflection beam; measuring an angle of a surface of the lens with respect to an in incident direction using an optical coherence tomography signal included in the interference beam; and estimating the net optical path length using the angle and at least one of optical path length between reflection surfaces; measuring the rotation amount of a polarization plane from a second output beam being output in a second direction having a specific angle with respect to the first direction; and measuring a glucose concentration of an aqueous humor on the basis of the net optical path length and the rotation amount of the polarization plane. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification