Patent ID: 11966035
Assignee: HAMAMATSU PHOTONICS K.K.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. A sample observation method comprising: irradiating a sample with excitation light having a wavelength for exciting the sample; guiding detection light emitted from the sample along with the irradiation of the excitation light; and detecting the detection light, the irradiating of the sample with the excitation light including light of which a wavelength changes with time being output as the excitation light from a wavelength sweep light source, the excitation light output from the wavelength sweep light source being incident on a spectroscopic element and the excitation light being emitted from the spectroscopic element at an emission angle corresponding to the wavelength of the excitation light, the excitation light emitted from the spectroscopic element being incident on a cylindrical lens at an incident angle corresponding to the emission angle, and the excitation light guided by a relay optical system including the cylindrical lens being condensed and the sample being irradiated with sheet-shaped excitation light, wherein the wavelength sweep light source is configured to sweep the wavelength of the excitation light in a predetermined wavelength range by periodically changing the wavelength of the excitation light to be output at high speed, and wherein a height of the sheet-shaped excitation light is changed by changing the wavelength of the excitation light output from the wavelength sweep light source so that the emission angle of the excitation light emitted from the spectroscopic element is changed in accordance with an observation target.