Patent ID: 7899289

Claim:
An optical fiber structure comprising: a first optical fiber array including a plurality of optical fibers, the output ends of which are linearly arranged; a second optical fiber array including a plurality of optical fibers, the output ends of which are linearly arranged; and a fiber holder for fixing each of the plurality of optical fibers of the first and second optical fiber arrays, wherein the first optical fiber array and the second optical fiber array are placed one on the other, and wherein the optical fibers in the first optical fiber array and the second optical fiber array include at least one first optical fiber that outputs a light beam having a first beam diameter from the output end thereof and at least one second optical fiber that outputs a light beam having a second beam diameter from the output end thereof, and wherein the first beam diameter and the second beam diameter are different from each other; wherein the core diameter of the first optical fibers at the output ends thereof is different from the core diameter of the second optical fibers at the output ends thereof, wherein the core diameter of the second optical fibers at the output ends thereof is greater than the core diameter of the first optical fibers at the output ends thereof, and wherein the second optical fibers have light divergent points on the insides of the output ends of the second optical fibers.