Big light ring projection optical devices

The utility model discloses a big light ring projection optical devices has set gradually to sending out optical chip from throwing the face: first lens, first lens are spherical lens, and the focal power is for bearing, second lens, second lens are aspherical lens, and the focal power is the burden, and second lens two sides is all curved to sending out optical chip, the diaphragm, third lens, third lens are spherical lens, and the focal power is for just, and the third lens adopt the biconvex lens, the fourth lens, the fourth lens are spherical lens, and the focal power is for bearing, the 5th lens, the 5th lens are spherical lens, and the focal power is for just, VI lenses, VI lenses is spherical lens, and the focal power is for just, the 7th lens, the 7th lens are aspherical lens, andthe focal power is for just, the prism. The utility model discloses simple structure, the light ring is big, and is small, the low cost, the magnifying power is high, high temperature is confocal. 本实用新型公开了种大光圈投影光学装置，从投射面到发光芯片