| Patent Number |
Title Of Patent |
Date Issued |
| 6944494 |
Motion measuring device |
September 13, 2005 |
| Endoscopes are well known devices used for examining surfaces contained within an enclosed cavity. Typical applications for these devices are the examination of tissues within human body cavities or mechanical components contained within engine compartments. An endoscopic apparatus for |
| 6750467 |
Vehicle mounted gas detector |
June 15, 2004 |
| A mobile gas detector comprising a laser transmitter and signal analyser carried on a vehicle, the vehicle having an exterior, a laser absorption cell carried on the exterior of the vehicle, a light guide connecting light from the laser transmitter into the laser absorption cell, a p |
| 6704333 |
Large area laser |
March 9, 2004 |
| A large area slab laser, wherein disharge is confined between two large area electrodes. A two dimensional array of inductors is placed across the electrodes so that the standing wave patterns associated with the propagation of the high frequency driving current are corrected. In one |
| 6121627 |
Gas detector with reference cell |
September 19, 2000 |
| A gas detector, comprising a laser transmitter, a laser receiver, a gas reference cell formed of a sealed encircling wall defining an interior volume, a liquid partially filling the gas reference cell, a reference gas dissolved in the liquid and forming a vapor within the interior volume |
| 5748325 |
Gas detector for plural target zones |
May 5, 1998 |
| Light from a laser transmitter propagates along several optical light guides from a laser transmitter to a laser receiver. The optical light guides form a guided light path traversing each of several target zones where unwanted gas may be present. An optical switch permits selection of |
| 5637872 |
Gas detector |
June 10, 1997 |
| A gas detector of gas in a target zone has a transmitter of frequency modulated light and a receiver. In the receiver, a homodyne detection circuit mixes a detected signal with a reference signal at one of the modulation frequencies, where the reference signal has been derived from l |
| 5386431 |
Regenerative amplifier laser array |
January 31, 1995 |
| A slab laser amplifier array includes a plurality of parallel, stacked, laser resonators, with each resonator having a walk-off mode of propagation of laser light from an input side of the resonator to an output side of the resonator where the exiting light diffracts around the reson |
| 5135534 |
Laser lithotripsy |
August 4, 1992 |
| A laser lithotriptor includes a laser adapted to emit pulsed light which is absorbed by water in the vicinity of a human stone or concrement to cause rapid erosion of the stone. A light transmitting device such as a fibreoptic cable is employed inside of an endoscope to direct the laser |
| 5091911 |
Long wavelength NdYAG laser |
February 25, 1992 |
| A neodymium laser provides output at about 1.44 .mu.m, by selection of a neodymium doping level of between about 0.3 and 0.7N, preferably at 0.4N with reflectivity of the output mirror at about 90% for 1.44 .mu.m output. Selection of the reflectivity of the output mirror is adjusted to e |
| 5059200 |
Laser lithotripsy |
October 22, 1991 |
| A laser lithotriptor includes a laser adapted to emit pulsed light which is absorbed by water in the vicinity of a human stone or concrement to cause rapid erosion of the stone. A light transmitting device such as a fibreoptic cable is employed inside of an endoscope to direct the laser |
| 5048034 |
Long wavelength NdYAG laser |
September 10, 1991 |
| A long wavelength NdYAG laser which is operable either in a surgical cutting mode where the wavelength of laser radiation is about 1.44 micrometers, or in a therapeutic coagulating mode where the wavelength of laser radiation is about 1.06 micrometers. The NdYAG laser combines the us |
| 4719639 |
Carbon dioxide slab laser |
January 12, 1988 |
| A carbon dioxide slab laser includes a pair of cooled metal electrodes disposed to form a gap of less than about 3 millimeters. The electrode surfaces on either side of the gap are polished and highly reflectant. A radio frequency discharge is provided between the electrodes to pass |
| 4288758 |
High power laser and cathode structure thereof |
September 8, 1981 |
| A cathode structure for gas lasers comprising a flat plate of non-conducting material positioned in the laser in spaced relation to the laser anode to define a discharge region therebetween, a two-dimensional array of metal sub-electrode rods passing through the plate and having thei |
| 4105952 |
High repetition rate pulsed laser discharge system |
August 8, 1978 |
| A high repetition rate pulsed glow discharge system for molecular gas lasers wherein sparks positioned adjacent to the discharge electrodes provide both ionization for the suppression of arcing and high repetition rate switching means for the energy storage circuit. The preferred energy |
