Abstract: The present invention is a solid state detector that has internal gain and incorporates a special readout technique to determine the input position at which a detected signal originated without introducing any dead space to the active area of the device. In a preferred embodiment of the invention, the detector is a silicon avalanche photodiode that provides a two dimensional position sensitive readout for each event that is detected.

Abstract: The present invention is a solid state detector that has internal gain and incorporates a special readout technique to determine the input position at which a detected signal originated without introducing any dead space to the active area of the device. In a preferred embodiment of the invention, the detector is a silicon avalanche photodiode that provides a two dimensional position sensitive readout for each event that is detected.

Abstract: A hand-held ophthalmoscope modified by the removal or augmentation of the focusing wheel and the addition of a manual or automatic focusing lens system. An electronic imager (CCD array or video camera) is placed optically conjugate to a viewing screen such that focus operations performed by the examiner to adjust the image seen by the examiner on the screen also focuses the image on the electronic imager. This is accomplished by an optical system which includes a straight path from the viewing screen to the patient's eye with a beam splitter interposed to cause the image of the patient's eye to be reflected onto the imager. As a result, when the examiner uses the focusing lens system, manual or automatic, positioned between the beam splitter and the patient's eye, to affect the image viewed by the examiner, the focus of the imager is simultaneously affected as well.

Abstract: The present invention is a solid state detector that has internal gain and incorporates a special readout technique to determine the input position at which a detected signal originated without introducing any dead space to the active area of the device. In a preferred embodiment of the invention, the detector is a silicon avalanche photodiode that provides a two dimensional position sensitive readout for each event that is detected.

Abstract: A hand-held ophthalmoscope modified by the removal or augmentation of the focusing wheel and the addition of a manual or automatic focusing lens system. An electronic imager (CCD array or video camera) is placed optically conjugate to a viewing screen such that focus operations performed by the examiner to adjust the image seen by the examiner on the screen also focuses the image on the electronic imager. This is accomplished by an optical system which includes a straight path from the viewing screen to the patient's eye with a beam splitter interposed to cause the image of the patient's eye to be reflected onto the imager. As a result, when the examiner uses the focusing lens system, manual or automatic, positioned between the beam splitter and the patient's eye, to affect the image viewed by the examiner, the focus of the imager is simultaneously affected as well.

Abstract: A modular snap-in keypad apparatus includes a planar frame member having a plurality of button accommodating apertures and a plurality of mounting posts extending therefrom. An elastomeric key button assembly has a planar surface containing a plurality of apertures which are positioned to receive each post. The button assembly comprises a plurality of raised elastomeric button structures which extend through an associated button accommodating aperture when said posts of said frame assembly accommodates the apertures in the button assembly. A planar switch assembly has a plurality of apertures which are congruently positioned with respect to the posts to enable the contact assembly to be positioned with respect to each button so that a conductive area of the button contacts the contact assembly when the button is depressed.

Abstract: There is disclosed a method of fabricating a folded printed circuit board. The method includes the steps of forming first and second apertures in a rigid board along a common line which line is parallel to a side edge of a board then scoring the line to form a break area for said board. The next step includes the formation of terminal areas on each side of the apertures on opposite sides of the line and forming component terminal areas for said board. Automatically inserting said components into said rigid board, while automatically inserting larger diameter wire conductors into said terminal areas to bridge said apertures, breaking the board along the scored line and folding the board with said wires across the apertures forming hinge assemblies for said board.

Abstract: The pneumatically operated apparatus includes a transparent, calibrated paint container to facilitate measuring of the required proportions of color and solvents. A vertically displaceable and rotatable member extends through and seals an opening in the bottom of the container. The member has a hollow body forming a paint passage. An agitator is sealingly mounted on the end thereof extending through the opening and into the container, the other end being opened. An aperture is provided in the wall of the member spaced a short distance from the agitator. A friction surface is provided for connecting a pneumatically operated drive to the member to rotate same.

Abstract: An improved semiconductor device is described which utilizes stable, slow diffusing resilient contacts that also serve as a suspension support for a semiconductor body.