Measuring method and measuring apparatus by light scattering
First Claim
1. A measuring apparatus comprising:
- an excitation light source part having an excitation light source for irradiating a sample with excitation light of a single wavelenght;
a sample part where said sample is irradiated with said excitation light;
a converging optical adjusting part for converging scattered light being generated from said sample being irradiated with said excitation light; and
a photoreceiving part comprising a photodetector for detecting said scattered light while increasing a density of an anti-Stokes-Raman scattered light.
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Abstract
An excitation beam from a laser is passed through a bandpass filter, and applied to a sample by a collimator lens. An optical adjusting part comprising a camera lens and a converging lens is provided for receiving scattered light from the sample, so that the camera lens receives the scattered light and converts the same to a parallel beam. The converging lens has chromatic aberration, and receives and converges the parallel beam from the camera lens. An inlet slit of a spectroscope is provided as an inlet port on a converging position by the converging lens. This inlet slit is a circular hole having a diameter of about 200 μm. The inlet slit is arranged on a position for converging anti-Stokes-Raman scattered light through the chromatic aberration of the converging lens.
42 Citations
19 Claims
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1. A measuring apparatus comprising:
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an excitation light source part having an excitation light source for irradiating a sample with excitation light of a single wavelenght; a sample part where said sample is irradiated with said excitation light; a converging optical adjusting part for converging scattered light being generated from said sample being irradiated with said excitation light; and a photoreceiving part comprising a photodetector for detecting said scattered light while increasing a density of an anti-Stokes-Raman scattered light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A measuring method comprising the steps of irradiating a sample of a vital substance with excitation light of single wavelength, and
detecting an anti-Stokes-Raman scattering intensity in scattered light being generated from said sample while increasing a density of the anti-Stokes-Raman scattered light for measuring a target substance in said sample.
Specification