OPTICAL SYSTEM, IMAGE PICKUP SYSTEM, IMAGE PICKUP DEVICE AND ELECTRONIC EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To solve such a problem that it is difficult to obtain a small-sized inexpensive optical system even though a refractive index distribution type lens array and a refractive lens array are put in use. SOLUTION: The system is provided with a 1st reflection surface array 110 constituted of a plurality of reflection surfaces 130 for reflecting light emitted from different areas on an object O side and a 2nd reflection surface array 120 constituted of a plurality of reflection surfaces 140 for separately reflecting the light reflected from each reflection surface constituting the 1st reflection array, and the intermediate image of a luminous flux is formed (135) by each reflection surface constituting the 1st reflection surface array, and ten, the intermediate image of the luminous flux formed by each reflection surface constituting the 1st reflection surface array is formed again by each reflection surface constituting the 2nd reflection surface array, then, the continuous image I of the object is obtained.