To reduce adjustment axes to three, to reduce the number of components and to perform miniaturization.

Plural solid-state image pickup elements 4 are constituted of plural color resolving prisms 2 for resolving incident light to plural colors and a silicon chip CCD 1b adhered through a color filter 1a to the respective color resolving prisms 2, the solid-state image pickup elements 4 are adjusted in three axial directions of horizontal (X axis), vertical (Y axis) and rotation, an optical path length is matched and then, the color resolving prisms 2 of the respective solid-state image pickup elements 4 are tightly adhered and fixed. Since this solid-state image pickup device is assembled just by 3-axis adjustment, assembling time is substantially shortened. Also, since the number of the components is small, the miniaturization is facilitated as well.