Nissan Motor Company Limited

USA as Represented by Secretary of the Navy

Ichikoh Industries, Ltd.

Ishikawajima-Harima Heavy Industries Co., Ltd.

Hiroshi Hara

Takeo Tamura

Takayoshi Kido

Morimasa Tanaka

Takanobu Yamamoto

Kiichiro Shimura

Takeshi Yokozawa

Wayne T Whitney

The invention provides a laser oscillator including (a) laser medium having a characteristic that distortion is caused in the laser medium by applying electric field thereto, (b) an optical pumping source for exciting the laser medium to thereby generate laser beam, (c) a pair of terminals through which a voltage is applied to the laser medium, and (d) an optical resonator including a total reflection coating attached to one of end surfaces of the laser medium and a partial reflection coating attached to the other of end surfaces of the laser medium. The laser oscillator provides advantages as follows: (a) laser outputs can be stabilized; (b) a laser oscillator can be small-sized; and (c) a laser apparatus can be also small-sized by incorporating the small-sized laser oscillator thereinto.

Laser oscillator and method for controlling the same

An improved method and apparatus for producing high power, high efficiency pulsed TEA laser energy at N.sub.2 O wavelengths by suppressing discharge arc formation with H.sub.2 or CO that is added to the N.sub.2 O lasing medium. Energy loading levels up to in the range of 266 J/L atm are achieved with gas mixtures of N.sub.2 lasing mediums and H.sub.2 or CO additives comprising N.sub.2 O:He:N.sub.2 :H.sub.2 ::0.03:0.69:0.27:0.01 and N.sub.2 O:He:N.sub.2 :CO::0.03:0.66:0.26:0.05 mole fraction.

Operation of transversely excited N.sub.2 O lasers

A drive circuit for a wiper device includes reversible driving motors for alternately driving a pair of wiper assemblies in first and second directions. Each driving circuit includes a switching means and a means for detecting both ends of the wiper blade motions in the first and second directions. The switching means is operative to switch the direction of electric current supplied to an electric motor when the detecting means detects the end of wiper blade motion. Each driving circuit is connected to both of switching means so that it can reverse the current supplied to the driving motor when both of switching means detect the ends of the wiper assembly motion.

Drive circuit for a wiper device

A wiper device for wiping rain on a mirror surface of a rear-view mirror provided on the exterior of an automotive vehicle, includes a driving means of the wiper blade for driving the latter in first and second directions alternatively. The driving device comprises an electric circuit which includes a switching means and a means for detecting both ends of the wiper blade motions in the first and second directions. The switching means is operative to switch direction of an electric power supply to an electric motor when the detecting means detects the end of wiper blade motion.

Wiper device

Growing community of inventors

Funabashi, Japan

Hiroshi Hara