Assembly and device for optical beam transformation

摘要

The strip light source (1) is a LED with an elongated luminous region. The strip light lies along the X-axis with little beam divergence and fast light transmission (Fast Axis). Light from the LED (3) diverges in the Y-direction and is collimated by a first cylindrical lens (4). There is considerable beam refraction in the Y-axis (Slow Axis). The collimated light passes through two crossed cylindrical lenslet arrays (5) with their lenslets at 45 degrees to the X- and Y-axes. It produces beams which are parallel in the X-axis and divergent in the Y-axis. The beams pass through a cylindrical lenslet array (8) and a cylindrical lens (11) producing a collimated beam (12) which is focused by a spherical lens (29) onto the end of an optical fiber (30).