ENDOSCOPE DEVICE
FIG8 is a schematic diagram illustrating arrangement of light (spots) acquired by two imaging elements of the imaging unit according to the fourth embodiment of the present invention  FIG9 is a schematic diagram illustrating a configuration of an imaging unit according to a fifth embodiment of the present invention
Imaging signals acquired by the first imaging element 921 and the second imaging element 922 will be described next by reference to FIG8. FIG8 is a schematic diagram illustrating arrangement of light (spots) acquired by the two imaging elements of the imaging unit 92 according to the fourth embodiment. In FIG8, light incident on each pixel is schematically illustrated as a circle (a spot). For example, light incident on the pixel P11 of the first imaging element 921 is illustrated as a spot SA11, and light incident on the pixel P11 of the second imaging element 922 is illustrated as a spot SB11. Spots received by the pixels of the first imaging element 921 (for example, the spot SA11 to a spot SA44 illustrated in FIG8) are arranged in a matrix. Furthermore, spots received by the pixels of the second imaging element 922 (for example, the spot SB11 to a spot SB44 illustrated in FIG8) are arranged in a matrix. If the arrangement of the spots received by the pixels of the first imaging element 921 and the arrangement of the spots received by the pixels of the second imaging element 922 are superimposed on each other with the optical axes of the observation light aligned with each other, the positions of the pixels Pxy of the first imaging element 921 and second imaging element 922 are displaced from each other by 1/2 pixel each in the row direction and column direction, and thus, as illustrated in FIG8, the spots SB11 to SB44 in the second imaging element 922 are arranged between the spots SA11 to SA44 in the first imaging element 921. In other words, when, for example, the spots SA11 to SA44 in the first imaging element 921 and the spots SB11 to SB44 in the second imaging element 922 are viewed along the row direction of the pixels Pxy, the spots SA11 to SA44 and the spots SB11 to SB44 are in a state of being arranged independently from each other.  Described next is a fifth embodiment of the present invention. FIG9 is a schematic diagram illustrating a configuration of an imaging unit 92a according to the fifth embodiment of the present invention. According to the above description of the first embodiment, spectral separation is performed by use of the prism 923, but in this modified example, spectral separation is performed by use of a thin film mirror 924 that is provided with a dichroic film and is plate-shaped.
schematic diagram
921
first imaging element
922
second imaging element
924
thin film mirror
['1. An endoscope apparatus, comprising: a light source device configured to continuously emit first light of a first wavelength band, and sequentially emit second light of plural second wavelength bands different from the first wavelength band and different from each other; and an imaging device including: a spectroscopic unit configured to spectrally separate light from a subject, the light arising from illumination light emitted by the light source device, into light of the first wavelength band and light of the second wavelength bands; a first imaging element configured to generate a first image signal by receiving and photoelectrically converting the light of the first wavelength band spectrally separated by the spectroscopic unit; and a second imaging element configured to generate a second image signal by respectively receiving and photoelectrically converting the light of the second wavelength bands spectrally separated by the spectroscopic unit.']