Patent ID: 7936983

Claim:
An imaging device comprising: a light source layer having a plurality of imaging light source units for radiating the imaging light containing a first wavelength to an object to be imaged; a detection layer having a plurality of detection elements for detecting the light of the first wavelength radiated from the light source units; and a light-blocking means interposed between the light source layer and the detection layer; wherein the light source layer is held between the detection layer and the object to be imaged, wherein the light-blocking means is arranged substantially in parallel to the light source layer and the detection layer, an end point of each light source unit along a first direction and located on the surface of the light source unit facing an object to be imaged is assumed to be A, a point where a vector that is perpendicular to the detection layer and passes through the end point A intersects the detection layer is assumed to be 0, a distance between the end point A and point 0 is assumed to be L 1 , and a distance from an intersection B between the vector and the light-blocking means on a side of the light source layer is assumed to be L 2 , and the light-blocking means is configured to expand by at least a distance M in the first direction from the intersection B, and wherein each detection element is positioned at a distance from the intersection 0 in the first direction that is not greater than (L 1 /L 2 )M, and at least a part of the detection element is positioned at a distance from the intersection 0 in the first direction that is not less than M.