le device shown in FIGS. 7A, 7B and 7C and an eye of an operator of the camera, and particularly showing a section taken along line VIII-VIII in FIG. 7A. [0048]FIGS. 9A and 9B are a front view and a cross section schematically showing an image pick-up device of a fifth embodiment of the invention, and particularly showing, by way of example, a structure of a camera-equipped portable device, respec