OPTICAL ELEMENT, OPTICAL HEAD, AND OPTICAL INFORMATION PROCESSOR

摘要

In an optical head, a microscope, a camera, a scanner, and other optical apparatus each comprising a lens equipped with an edge portion, even if any stray light exists toward the edge portion of a lens, the quality of a detection signal or an image is prevented from being affected by the stray light. The optical element comprises a coupling lens (100) having a lens body (102) and an edge portion (101); and a light shielding cap (600), which is provided with an opening (610) at a position corresponding to the lens body (102), and a light shielding portion arranged to cover the position corresponding to the edge portion (101).