Patent ID: 9488790
Filing Date: 2016-11-08
CPC Classification: G02B

Claim Text:
1. A lens array that is disposed between a photoelectric conversion device and an optical transmission body, the photoelectric conversion device in which a plurality of photoelectric conversion elements are disposed in an array, the lens array capable of optically coupling the plurality of photoelectric conversion elements and the optical transmission body, the lens array comprising: a plurality of first lens faces that are disposed on a first surface of a lens array main body on the photoelectric conversion device side, such as to be arrayed in a predetermined array direction corresponding with the plurality of photoelectric conversion elements, and through which light of each photoelectric conversion element that couples the plurality of photoelectric conversion elements and the optical transmission body passes; and a plurality of second lens faces that are disposed on a second surface of the lens array main body on the optical transmission body side, such as to be arrayed along the array direction, and through which the light passes, wherein each first lens face or each second lens face is formed having a face shape that increases the light beam diameter of the light from the first lens face side towards the second lens face side, thereby increasing a spot diameter of the light on each second lens face to be larger than a spot diameter of the light on each first lens face, and each first lens face is formed into a concave lens face that disperses light it receives from a respective photoelectric conversion element.