公开(公告)号：JPH0638081A

公开(公告)日：1994-02-10

申请号：JP18537292

申请日：1992-07-13

Applicant: HAMAMATSU PHOTONICS KK

Inventor： KATO MASAYOSHI ,  SUZUKI KENJI ,  SAKAMOTO TOMIYASU ,  TAKADA HIROSHIGE ,  YONEZAWA MICHIHARU ,  TAKEYAMA CHIKAYOSHI ,  WATASE FUMIO

IPC: H01J31/50 ,  H04N5/225

Abstract: PURPOSE:To considerably improve the performance of the high-sensitivity dark viewing device by embedding light sources, which successively emit plural infrared rays while turning on/off them, near the periphery of the image pickup center of an object while integrating them to a main body. CONSTITUTION:Plural infrared light emitting diodes 6, 6A and 6B are interally embedded in a main body 1, and the periphery of the image pickup center of an object 5 is successively irradiated with tuning on/off light. The timing of turning on/off the light overlaps the turn-on of the diodes 6 and 6A just for time t, and the light emission of a fluorescent plane 33 is continued without being interrupted. The infrared beams reflected from the object 5 are made incident to an objective lens 2, an image is formed, and the optical image is divided into picture elements by a fiber plate 30 and converted to an electronic image by a photocathode 31. This electronic image is converted to the optical image again on the fluorescent plane 33.