Patent ID: 7391458

Claim:
An image sensor module comprising: an image sensor chip mounted on a substrate; a housing installed on the substrate and having a step portion for retaining a lens above the image sensor chip; a lens unit placed on the step portion for forming an image of an object on the image sensor chip; and a lens retainer installed on the housing; wherein the lens retainer comprises an elastically deformable portion, and the lens unit is pressed against the step portion of the housing by a biasing force caused by the elastically deformable portion; and wherein the lens unit comprises a combination of a first lens and a second lens, the first lens including a flat contact face and a concave lens face, the second lens including a flat contact face for contact with the flat contact face of the first lens, the second lens further including a convex lens face that is spaced from the concave lens face an projects beyond the flat contact faces of the first and second lenses into a recessed space defined by the concave lens face of the first lens.