A laser medical probe adapted for direct contact with, or insertion into, tissue undergoing laser treatment. The probe includes a laser energy transmissive surface for emitting radiation from the probe. The probe surface includes a layer of laser transmissive particles for diffusing laser energy passing therethrough and an affixing material for affixing the particles to the probe surface. Laser energy emitted from the surface may be coupled into the particles and irregularly refracted and reflected thereby causing a wide laser energy radiation profile. The affixing material and the particles form a tissue contact surface for directly contacting the tissue undergoing treatment. A substantial number of the particles partially extend from the affixing material. The resultant tissue contact surface is rough. The affixing material may be a ceramic bonding agent.
This is a continuation of co-pending application Ser. No. 07/824,823 filed on Jan. 22, 1992, now abandoned which is a continuation of application Ser. No. 07/273,304 filed on Nov. 18, 1988, abandoned, which is a continuation-in-part of application Ser. No. 07/124,448 filed Nov. 24, 1987, now abandoned, which is a continuation-in-part of application Ser. No. 06/862,14 filed May 12, 1986, now abandoned.
Apparatus and method for providing illumination at selected locations includes assembling a fixture for supporting an end of an optical fiber cable in relation to a diffusive or dispersive lens that is installed in a surrounding medium with a portion of the lens protruding therefrom. The protruding portion of the lens may be severed substantially flush with the surrounding medium to provide an optical outlet port for illuminating flux supplied by the optical fiber cable.
In a panel for a color cathode ray tube, an at least 10% portion in a width direction of a seal edge surface of the panel is a roughened surface which satisfies: where R.sub.z represents an average depth of a concave/convex portion formed in the seal edge surface and S.sub.m represents an average period of adjacent concave or convex portions, whereby the production of flaws and the deposition of stains in the seal edge surface is prevented.
Lighting apparatus and method includes a body of optically transparent material including selected interior and exterior surface portions that are polished or otherwise smoothed to promote internal reflections of light flux and to inhibit lateral emission of internal light flux. Other selected portions of the interior or exterior surfaces are modified from smooth to refract or diffuse internal light flux for lateral emission of light flux from such surface portions of the body. The modified surface portions of the body may include grooved or otherwise roughened regions to a depth that inhibits surface wetting to relatively smooth surface condition which would diminish lateral emission of internal light flux. Alternative surface conditions for refracting or diffusing internal light flux to laterally-emitted light flux may be provided by laminated or layered light diffusers such as plastic tape or adhered glass or plastic beads.
A plane side of a semispherical lens is opposed to an end of optical fibers for guiding a pulse laser beam, and a semispherical lens is disposed in a predetermined spaced relation.
A medical handpiece is disclosed which is connected with a laser radiation source via a beam guidance device and by which a laser beam is directed to a treatment area. The handpiece is freely movable to the laser beam source. At least one optical element with a surface which is structured in the micrometer range and which is accordingly micro-optically active is provided inside the handpiece following an exit face of the beam guidance device.
