DLP TYPE EVANESCENT MICROSCOPE

摘要

There is provided a DLP type evanescent microscope capable of generating evanescent light by DMD control for effectively using the irradiation light, increasing the accuracy of generation position, enabling easy control, and easily switching to another irradiation method. Laser light is diverged by a concave lens (2) and made into parallel light by a convex lens (3) when coming into a DMD device (4). In the DMD device (4), a ring-shaped micro mirror is ON-controlled for obtaining an incident light of an angle exceeding a critical angle by a cover glass (8). A convex lens (22) transmits only reflected light ON-controlled into the ring shape from the micro mirror and converges the light which has transmitted on the rear focal point surface of an objective lens (7) having an ultra-high numerical aperture. The ring-shaped light is reflected by a dichroic mirror (5), passes through the rear focal point surface, comes into the objective lens (7) of the ultra-high numerical aperture, and is refracted. A total reflection occurs on the lower surface of the cover glass (8) and evanescent light is generated.