| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens block and an optical communication module in which optical fibers can be parallelly arranged on a substrate on which a light-emitting element and a light receiving element are mounted, and the accuracy of optical coupling between the light-emitting element and the optical fibers can be improved.SOLUTION: A lens block 200A comprises: a light-transmitting part 20A made of a light-transmitting member on which first to third lens parts 21A,22A,23A are formed; and a half mirror part 25A which splits received light into reflected light and transmitted light. Diffusion light made incident to the first lens part 21A is converted into collimated light by the first lens part 21A, the light travels straight from the first lens part 21A and is received by the half mirror part 25A, reflected light reflected on the half mirror part 25A is condensed and emitted by the second lens part 22A without being reflected inside the light-transmitting part 20A, and transmitted light transmitted through the half mirror part 25A is reflected inside the light-transmitting part 20A for a plurality of times, and is condensed and emitted by the third lens part 23A. |
