Light guide and electronic equipment

The invention discloses a light guide part and electronic equipment, the electronic equipment comprises an optical sensor, the light guide part comprises a first light guide part and a second light guide part, and the second light guide part is located on the backlight side of the first light guide part, wherein the refractive index of the first light guide part is smaller than that of the second light guide part, and external light reaches the light sensing surface of the optical sensor through the first light guide part and the second light guide part. By arranging the first light guide part and the second light guide part which are different in refractive index, external light rays reach the light sensing surface through two times of refraction, the light rays are far away from the side face of the light guide part as far as possible, the light rays entering the light guide part are not prone to being refracted out, more light rays are bound in the light guide part, the light guide effect of the light guid