OPTICAL SYSTEM OF SCANNING PHOTON MICROSCOPE

摘要

PURPOSE:To prevent resolution at the peripheral part of a picture from reduction by increasing the thickness of a transparent electrode arranged on a sample inside the surface intersecting with the optical axis of a lens system opposed to the transparent electrode at right angles in accordance with a distance from the optical axis to correct the aberration of curve on the image surface of the lens system. CONSTITUTION:The glass plate 3 provided with the transparent electrode 4 arranged on the sample 5 supported by a supporting board 6 is curved at its lens 2 side. The shape of the curved surface of the glass plate 3 is set up so that the aberration of curve on the image surface which is formed by a lens 2 can be corrected. A bright point in a point A on the optical axis of a light source 1 is formed at its image on a point A' on the surface of the sample 5 and a bright point in a point B separated from the optical axis is also formed at its image in a point B' on the surface of the sample 5, so that the resolution at the peripheral part of the picture is prevented from reduction.