Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 5739947 | Nonlinear optical power limiter using self-trapping of light Incident radiation is focussed by a lens into a non-linear optical material whose index of refraction increases with increased radiation intensity. For normal radiation, the radiation freely passes through the nonlinear optical and an optically-switchable... | 04/14/1998 |
| 5739950 | Broadband protector for photodetectors A trilaminar semiconductor device is placed at an intermediate focus is an optical instrument having a sensitive photodetector. The layers of the device are successively in the form of a two-photon absorber, a sacrificial layer, and a multiple quantum wel... | 04/14/1998 |
| 5561541 | Frustrated total internal reflection optical power limiter In order to protect a delicate photodetector from high-intensity radiation, such as from a laser, a device for limiting optical power to the detector is interposed between the radiation and the detector. This device has an optical interface that totally r... | 10/01/1996 |
| 5348688 | Optical power limiters and materials therein A liquid crystal modified by the addition of an organic dye is used as a non-linear optical material in two devices which limit the optical radiations to sensitive photodetectors. One device uses the self-focusing induced in the crystal to disperse high-i... | 09/20/1994 |
| 5055776 | Flexible membrane circuit tester A pattern of electrodes, with electrical lead lines to the electrodes, are arried by a thin-film membrane mounted on a frame. The pattern corresponds to a test point pattern on a circuit to be tested. The lead lines go to edge connectors on the frame. In o... | 10/08/1991 |
| 4965447 | Chopper for staring infrared systems Incident infrared radiation is focussed through a rotatable disk of germam onto a detector array. The disk has a thickness many times the wavelengths of the incident radiation and is partly covered with a pattern of germanium one-half wavelength of some ... | 10/23/1990 |
| 4959546 | Thermo-optical far infrared system An infrared detecting system with a unique detector. The detector consists f an infrared-radiation absorbing layer on one side of thin-film substrate. On the other side of the substrate is a light reflecting layer, with a transducing material on the reflec... | 09/25/1990 |
| 4948957 | Method for training infrared imager users The method includes the steps of making a video recording of an infrared ne, of producing an infrared image from the recording and projecting it onto a screen, and of converting the projected image into a visible image at a user's infrared imager.... | 08/14/1990 |
| 4945248 | Hydroactivated bionic infrared source A waterproof container such as a plastic or treated paper bag is filled w a dry biodegradable vegetable material such as hay, grass clippings, wood shavings, etc. When water is added to the container to wet its contents, the normally-occurring micro-orga... | 07/31/1990 |
| 4876692 | Microwave-pumped atomic gas laser Apparatus and method for producing laser radiation from an element of a binary (or more complex) compound pumped by microwave energy. The energy causes the compound to dissociate and for the one element of the compound to go to its first excited state, th... | 10/24/1989 |
| 4875200 | Illuminating bezel A wafer battery has a light-emitting diode attached to its jacket, with one ead of the diode soldered to the battery jacket, and the other lead extending around the battery and overhanging its anode. The combination of diode and battery is encapsulated in ... | 10/17/1989 |
