Abstract: Microscopic photoelectric devices with semitransparent surface electrodes are combined with a liquid or other suitable vehicle. Together they are injected into the subretinal space of the eye. The microscopic photoelectric devices transduce incident light into electric current that will stimulate the overlying cellular layers of the retina. In persons suffering from visual disfunction due to outer retinal layer damage, such devices may allow useful formed artificial vision. The preferred independent surface electrode microphotodiodes (ISEMCP's) may be in the shape of microspheres, microdiscs or other microshapes. The ISEMCP's are formed of either PiN or NiP type semiconductors, or a combination of both, in a single unit. These devices will form a dipole when exposed to light due to the electric current generated. A magnetic field applied in the vicinity of the eye may help align the ISEMCP's within the retina so that their photo-active surfaces face the incident light.

Abstract: A method of making an optical scanner is disclosed that includes light transmitting and receiving optical fibers to illuminate and scan an image to be copied, transmitted or stored.

Abstract: An optical scanner is disclosed that includes light transmitting and receiving optical fibers to illuminate and scan an image to be copied, transmitted or stored.

Abstract: A monitor for the detection of a target gas by sensing the color change of a colorimetric indicator material. The monitor includes a light detector positioned and having a surface oriented to receive light reflected from the colorimetric indicator material and a light source positioned between the colorimetric indicator material and the light detector and oriented to provide illumination to the colorimetric indicator material but not to the light detector.