lf and the outer peripheral surface of the compound eye optical system lh the constitutions other than the above are the same as those in the above mentioned embodiment here array lenses on one side of them may be made to array lenses la 1 la 2 integrally made of resin by molding fig1 is a cross sectional view similar to fig1 and exaggeratedly shows deformation of the imaging device when a temperature change arises in relation to the present embodiment for example when environmental temperature rises in lenses wl 1 a wl 1 b wl 2 a and wl 2 b of the compound eye optical system lh which are made of plastic in the case of a convex lens an image forming position generally goes far due to occurrence of a refractive index change by a temperature rise in the case of a concave lens a change of the image forming position is reverse to the above however since the total power of the respective optical systems is positive the image forming position is made to go far in the total view on the other hand if the lens frame lf is subjected to the same temperature rise the top surface portion lf 2 deforms so as to become a convex form toward the upper portion.