Patent ID: 11933735
Assignee: OSAKA UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. A method for designing an optical detection device that detects a desired wavelength component included in input light, the optical detection device including:
a spectrometer that receives the input light as an input and outputs, at a first pitch, an alignment of spectra each of which is a duplication of a spectrum of the input light;
a slit array including an array of three or more slits that pass light beams of wavelengths at three or more locations in the alignment of the spectra that are output from the spectrometer; and
an imaging element composed of an array of pixels that receive the light beams having passed through the slit array, each of the light beams having three or more wavelength components separated by a fixed wavelength range so that the three or more wavelength components are shifted from each other in a fixed wavelength cycle, wherein
at least two pitches between slits are different in the array of the three or more slits, and
a second pitch that is one of the at least two pitches is different from the first pitch,
the method comprising:
determining positions of the three or more slits in the slit array so that the three or more slits include a slit that passes a light beam of a wavelength corresponding to a location that is characteristic to the spectrum of the input light; and
fabricating the optical detection device in accordance with a final design obtained by performing the method.