Endoscope apparatus
US4867136A · kind A · utility
Assignee
Inventors
- Akira Suzuki
- Susumu Takahashi
- Takeaki Nakamura
- Tatsuya Yamaguchi
- Takashi Tsukaya
- Tsutomu Yamamoto
- Masanao Murata
- Kazunari Kobayashi
- Yoshikazu Tojo
- Kenichi Kikuchi
- Koji Kanbara
- Yoshihito Shimizu
- Akira Hasegawa
- Shinichiro Hattori
- Iwao Kanamori
- Akira Yokota
- Kimihiko Nishioka
- Minoru Okabe
- Katsuyuki Kanehira
- Nobuo Yamashita
- Masayoshi Naito
- Tomoaki Sato
- Koichi Matsui
- Kenji Hirooka
- Hiroki Hibino
Key dates
| Filing date | Apr 19, 1988 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Apr 19, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/065
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An endoscope apparatus for inspecting an object including an insertion section insertable into the object and having a distal end and a proximal end, an image guide arranged within the insertion section and having entrance and exit ends arranged at the distal and proximal ends of insertion section, respectively, an objective lens system arranged at the distal end of insertion section for forming an optical image of the object onto the entrance end of image guide, an eyepiece lens system arranged at the proximal end of insertion section for projecting the optical image transmitted through the image guide onto an observating position, a first piezo-electric bimorph arranged at the distal end of insertion section for vibrating the entrance end of image guide in a direction perpendicular to a longitudinal axis of the insertion section over a given distance, a second piezo-electric element arranged at the proximal end of insertion section for vibrating the exit end of image guide in the same direction and over the same distance as those of the entrance end of image guide, so that annoying black mesh and Moire fringe are removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.