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

Claim 0:
1. A light sheet microscope comprising: an irradiation optical system configured to irradiate a sample with excitation light having a wavelength for exciting the sample; a detection optical system configured to guide detection light emitted from the sample along with the irradiation of the excitation light; and a photodetector configured to detect the detection light guided by the detection optical system, the irradiation optical system including a wavelength sweep light source configured to output light of which a wavelength changes with time as the excitation light, a spectroscopic element on which the excitation light output from the wavelength sweep light source is incident and which emits the excitation light at an emission angle corresponding to the wavelength of the excitation light, a relay optical system which includes a cylindrical lens on which the excitation light emitted from the spectroscopic element is incident at an incident angle corresponding to the emission angle, and a first objective lens configured to condense the excitation light guided by the relay optical system and irradiate the sample 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 emitted from the first objective lens 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.