Flat illuminating lamp structure adopting PC (Poly Carbonate) lens

The utility model provides a flat illuminating lamp structure adopting PC lenses. A first lens, a second lens and a third lens which are all made of PC materials are sequentially arranged in the direction from near to far along a light source. The light-in surface I of the first lens is of a plane structure, and the light-out surface I of the first lens is of a continuous aspheric surface structure; a light-in surface II of the second lens is of an arc-shaped surface structure, and a light-out surface II of the second lens is of an aspheric surface structure; the light-in surface III of the third lens is of a plane structure, and the light-out surface III of the third lens is of an aspheric surface structure; light rays emitted by the light source are collimated through the first lens, the collimated light rays enter the second lens to be collected for the second time, the collected light rays are collected again through the third lens to form a required light type, and the light rays are collimated for multi