Abstract: A high-illumination lighting system for microwave ovens which employs a small, low-voltage microwave-immune incandescent lamp located within the oven cavity, thereby utilizing up to the full 4.pi. steradians of emitted light. The lamp, which may be integrated into the oven cavity during manufacture or may be included in aftermarket ovens as a complete lamp module, preferably is located at the upper front of the oven in order to front-light the over contents. The lamp may be electrically connected to one of several existing oven power supplies, or alternatively, may be an aftermarket module powered by microwave energy within the oven cavity. In the latter case, a microwave antenna is connected to the lamp to supply operating power.

Abstract: A system for computerizing eyeglass geometrical frame pattern records at a central location for access by eyeglass retailers or wholesalers is disclosed. The pattern records are stored in a central computer in the form of instructions for a remote pattern cutting machine. The instructions define the shape of the eyeglass frame in quasi-polar coordinates, either using the frame's geometrical "box" center as the origin or using the optical center of the lens as the origin, the computer providing the desired conversion between the two pattern centers. When an optician has a call for edging a lens for a particular frame, the optician obtains the edge shape data from the central computer by specifying the frame and, if desired, by specifying the decentration of the optical center from the frame geometric center. The central computer may convert its frame shape data from the geometric center to the optical center, if desired, and then provides the necessary data for cutting the pattern.

Abstract: A method and apparatus for measuring the absorption characteristics of complex lenses to light from a selected band of wavelengths, preferably wavelengths in the ultraviolet range, is disclosed. Light from an incandescent light source is passed through a tunable interference filter, which passes light having only wavelengths from the selected band of wavelengths, and is directed toward a first side of a lens to be tested. An integrating light detector, preferably a selenium solar cell is placed in close proximity to the second side of the lens to be tested, and senses substantially the total amount of light flux passing through the lens, regardless of the lens' complexity and light diverging characteristics. The output of the detector is fed through amplifier circuitry to a suitable indicating meter. A light impervious housing structure may be provided to prevent ambient light from impinging on the detector. The device utilizes inexpensive elements, is very accurate, may be hand held, and is simple to use.