Spectral camera
AssigneesPublic University Corporation Suwa University of Science Foundation, Seiko Epson Corporation
InventorsShota Yamanaka, Masatoshi Yonekubo
Life of this patent
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Abstract
A spectral camera includes a spectral filter having an optical region that transmits light having a predetermined wavelength out of incident light; an imaging device having an effective imaging region larger than the optical region; and an imaging optical system configured to guide the light having the predetermined wavelength passing through the optical region in such a way that the light having the predetermined wavelength is brought into focus at the imaging device. The spectral filter is disposed within a predetermined range extending along an optical axis of the imaging optical system and centered around a position where a chief ray of a luminous flux brought into focus at a peripheral section of the effective imaging region intersects with the optical axis.
Claims3
A spectral camera comprising:
- a spectral filter having an optical region that transmits light having a predetermined wavelength out of incident light;
- an imaging device having an effective imaging region larger than the optical region;
- and
- an imaging optical system configured to guide the light having the predetermined wavelength passing through the optical region in such a way that the light having the predetermined wavelength is brought into focus at the imaging device,
- wherein the spectral filter is disposed within a predetermined range extending along an optical axis of the imaging optical system and centered around a position where a chief ray of a luminous flux brought into focus at a peripheral section of the effective imaging region intersects with the optical axis.
Dependencies are inferred from the claim text.