Fujitsu Corporation

Manabu Matsumoto

Hiroshi Yamamoto

Akira Sawada

Hiroyuki Abe

Shin Watanabe

Hidehiko Hizuka

Katsumi Kanasaki

Shinji Hiramatsu

Masatomo Ohta

Masahiro Haga

Natsuo Masuda

Shigeki Yamaji

Toshihiko Motoseko

Haruhiko Horizoe

A device for preventing laser beam leakage, which excludes a danger that a laser beam emitted from a laser source directly attacks eyes of an operator when an external connector is connected to or disconnected from an internal connector, aiming at being inexpensive and excellent in operability, and having a high safety. When the external connector has been removed from the optical transmission apparatus, a pair of movable shield plates are constantly urged in respective directions for closing a receiving opening of the apparatus to bring joining portions of the movable shield plates into close contact with each other, thereby preventing dust from entering the inside of the apparatus and the laser beam from being leaked. Further, a limit switch is provided, which stops delivering an ON signal to an E/O laser module when the external connector is pulled out of the optical transmission apparatus, whereby the E/O laser beam stops supply of the laser beam, thereby bringing into effect a perfect measure for protection of the eyes of the operation from the laser beam.

Device for preventing laser beam leakage

A power supply apparatus for a package, in which power is supplied to a package connected to a shelf, aiming at supplying power to the package without using signal pins of a connecting part on a back wiring board and reducing voltage drop at a pattern on the back wiring board to a negligible degree. A fitting section of a package printed board and a fitting section are fitted to each end of a tab of the back wiring board, and a fitting section of a package printed board and a fitting section are fitted to each end of a tab of the back wiring board. Further, a connector on the package side of package printed board and a connector are fitted to each end of a signal terminal group of the back wiring board.

Power supply apparatus for package

Growing community of inventors

Kawasaki, Japan

Manabu Matsumoto