Gunther Nath: Apparatus for applying intense light radiation to a limited area. Frishauf Holtz Goodman & Woodward, November 11, 1980: US04233493 (191 worldwide citation)

The apparatus, used for example to stop bleeding by heat coagulation during surgery, comprises a high power incandescent lamp emitting intense radiation high in infrared content enclosed in a housing having a light guide means, such as a solid light pipe, providing a light exit surface. The exit sur ...

Gunther Nath, Albert Kreitmair, Vincent Jaeger: Apparatus for coagulation by heat radiation. Brumbaugh Graves Donohue & Raymond, September 10, 1985: US04539987 (111 worldwide citation)

In a radiation coagulator having an electric incandescent lamp, in particular a tungsten-halogen low-voltage lamp, as radiation source, and a tissue contact element of a crystalline dielectric material transmissive to the radiation, forming a contact surface to be pressed against living body tissue, ...

Gunther Nath: Flexible light guide. William R Woodward, December 7, 1976: US03995934 (84 worldwide citation)

A flexible light guide of the liquid filled type is provided with a liquid supply container outside the light guide.

Gunther Nath: Flexible light guide, particularly for medical/dental use. Flynn & Frishauf, February 22, 1977: US04009382 (66 worldwide citation)

A flexible light guide of plastic tubing is filled with a liquid which does not wet the plastic material, and preferably also is hygroscopic. The plastic material of the tube is preferably Teflon, FEP, PFA or PTFE; the liquid, for example, is an inorganic solution, especially ionic solutions and alc ...

Gunther Nath: Illumination device with light guide and light diffuser. November 8, 2005: US06963688 (25 worldwide citation)

The present invention relates to an illumination device comprising light source and a light guide coupled thereto, preferably a liquid light guide, the light exit end of which is provided in the form of a light diffuser, said light diffuser comprising a polymer, preferably a fluorocarbon polymer. Th ...

Gunther Nath: Illumination device with a light guide of a liquid-filled plastic flexible tube. Brumbaugh Graves Donohue & Raymond, March 6, 1990: US04907133 (15 worldwide citation)

In an illumination device comprising a light source and a light guide consisting of a flexible tube of fluoroplastic filled with liquid the filling liquid is a phenylmethyl silicone oil.

Gunther Nath: UVC liquid light guide. Galvin & Palmer, July 9, 2002: US06418257 (15 worldwide citation)

Disclosed is a liquid light guide for transmitting UVC radiation formed of concentrically arranged TeflonĀ® light guide tube having an internal totally reflecting coat of a fluorplpolymer layer within a sheath having water or another aqueous solution disposed between the sheath and the light guide tu ...

Albert Kreitmair, Gunther Nath: Device for irradiating denture parts. Handal & Morofsky, October 10, 1989: US04873446 (14 worldwide citation)

An irradiation device for the radiation polymerization of synthetic materials in denture parts is described, having an electric lamp as source for radiation in the short-wave visible and close ultraviolet spectral region, also having a receptacle defining an irradiation chamber for a denture part wh ...

Gunther Nath: Light guide having a flexible plastic tube filled with an aqueous salt solution. Helfgott & Karas P C, April 7, 1998: US05737473 (9 worldwide citation)

A light guide stable to UV-B radiation having an envelope made of a flexible fluorocarbon polymer tube and a liquid light conducting core which contains an aqueous chloride salt solution, such as a calcium chloride solution, which has a pH value adjusted by added alkali, e.g. KOH, to 6 or higher.

Gunther Nath: Light device having first and second optical systems arranged substantially 90.degree. apart. Helfgott & Karas P C, December 17, 1996: US05584558 (9 worldwide citation)

A lighting device with two light pipes contains a light source with two optical systems arranged at right angles to each other and a common lamp. Behind the lamp, shifted by 9.degree., there are two reflector concave mirrors and, opposite each of them a condenser, which focuses the light arriving di ...