| 摘要 |
A micro lens array or image pick-up light receiving device comprises a spherically shaped first light collector 10, a second light collector 20 configured to receive light collected by the first light collector, and a photo sensitive light receiver 50 configured to receive light collected by the second light collector. The second light collector has a high refractive index portion and a low refractive index portion, and the high refractive index portion has one of a cylindrical shape and a polygonal prismatic shape and is sized so as to perform as a diffraction grating. |
