Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 4701023 | Optical arrangement for transmitting high-intensity radiation In sun simulators of the off-axis type, the angle at which the collimator mirror reflects the incident beam onto the test object causes a distortion error dependent on the radius of curvature of the collimator mirror. This error distorts the cross-section... | 10/20/1987 |
| 4685778 | Process for nuclear hardening optics and product produced thereby A process for nuclear hardening an optical part consisting of a prepared beryllium substrate processed to yield a surface finish of at least 125 micro-inch rms that is subsequently provided with a vapor deposited coating of beryllium of about 0.012 inch &... | 08/11/1987 |
| 4659193 | Epidark illumination device An epidark illumination device comprising an optical means whereby a light from a light source is rightly reflected within an entrance plane including an optical axis but is diffused within a plane vertical to the entering plane, a light interrupting plat... | 04/21/1987 |
| 4645315 | Trailing distance and safe passing indicator for trailer A device mounted on the right rear of a trailer driven by a motor vehicle to denote when it is safe to move back into the normal driving lane of a highway, after passing a vehicle and while in the passing lane. The device is a transparent reflector mounte... | 02/24/1987 |
| 4642469 | Three-dimensional reflectors for object attitude recognition A three-dimensional reflector for object attitude detection responds to illumination from a radiating source to produce a discrete array of light points aligned along a locus on the reflector. The array is characteristic of the reflector position with res... | 02/10/1987 |
| 4630904 | Combination rear view mirror and digital displays A rear view mirror for a motor vehicle comprising a two-way mirror in which a tinted glass plate is mounted flush against a housing on one side with a rim bracket designed to keep out all light. The housing incorporates instruments and devices to show inf... | 12/23/1986 |
| 4581827 | Car door mirror equipped with bearing magnetometer A compass attached to a car door mirror is disclosed which provides protection for the compass and improved readability, while avoiding the reliability problems of compasses mounted inside the car. The compass is embedded in the frame of the car door mirr... | 04/15/1986 |
| 4528695 | Distribution system for a local fibre network A transparent optical distribution system which is tolerant to system variations and extension in future, such as the choice of analogue or digital signals, bandwidth, bit rate, the number of services and connections per subscriber comprises a common term... | 07/09/1985 |
| 4490228 | Method of manufacturing a reflecting surface A method of manufacturing a reflecting metal surface, in particular to obtain reflectors for the lighting projector for motor vehicles. In this method a resin layer is projected onto the raw metal surface; onto the said layer of hardened resin is projecte... | 12/25/1984 |
| 4481563 | Automotive headlight having optics in the reflector An automotive headlight has a clear unfluted front cover and a reflector which directs light from a source through the front cover in a desired pattern. The reflective surface is smooth and continuous formed of two edge ellipsoids and a center ellipsoid j... | 11/06/1984 |
| 4459043 | Reflective elements and sensors including reflective elements A radiation pyrometer, or other optical sensor, has a mirror assembly capable of withstanding high temperatures. The mirror assembly is a block of a steel containing between 15 and 20% chromium, 4.0 and 5.2% aluminium, 0.05 and 0.4% yttrium, 0.2 and 0.4% ... | 07/10/1984 |
| 4457597 | Self cleaning side view mirror A side view mirror which includes a frame and reflective center portion has a top and bottom end cap incorporated as an integral part of the structure and a pair of guide rods extending between the top and bottom end caps, on either side of the mirrored c... | 07/03/1984 |
| 4429004 | Light-reflecting body A light-reflecting body, in particular a car headlight, whose wall consists of a poly-(1,4-butylene terephthalate) which contains 10-60% by weight of a filler, having a particle size of at most 30 μm, chosen from the group comprising kaolin, talc, mica, ... | 01/31/1984 |
| 4329978 | Solar energy devices This invention relates to solar collectors of the type having associated reflectors to increase their efficiency, and includes a method of establishing the orientation of the collector with respect to the sun such that the unit may be operated at a high l... | 05/18/1982 |
| 4326775 | Method for operating a panoramic optical system A method for operating a panoramic optical system to produce a shadow or darkened zone on the apex of a curved lens in order to eliminate undesirable optical interference in the region between the curved reflector and the focal plane is disclosed. The cla... | 04/27/1982 |
| 4173036 | Wavy mirror transmitter optics A single reflecting transmitter with improved performance capabilities. The mproved performance is achieved by using a modified surface called a wavy mirror. The wavy mirror has its focal distance a function of the angle measured around the axis of revolut... | 10/30/1979 |
| 4105915 | Deflection-type modulator of laser beam for communications A deflection-type modulator, for insertion in the path of a laser beam directed to a remote receiver, includes a mirror mounted on a voice coil device and positioned in the focal plane of a lens. A prism reflects the laser beam at right angles through one... | 08/08/1978 |
| 4090506 | Diagnostic instrument A device for visually examining a generally inaccessible body cavity, such as the larynx or the like, including a mirror mounted upon an elongated support member for insertion and positioning within the cavity, a light transmitting means having a light re... | 05/23/1978 |
| 4023029 | Distance indicating mirror device A convex mirror has a frosted non-reflective elongated and horizontal line, approximately midway of the mirror and of a width less than the thickness of the mirror, and a light source is disposed adjacent the reflective surface with a colored filter posit... | 05/10/1977 |
| 3996947 | Make-up kit A make-up assist kit particularly suitable for applying eye make-up or the like incorporates a lid pivotally secured to a base along one edge of the base and a lens supporting frame or yoke carrying a pair of prescription lenses. The yoke is pivotally att... | 12/14/1976 |
| 3937949 | Optical remote control apparatus employing light scattering plate An improvement in optical remote-control apparatus which comprises a light-beam transmitter and a light-receiver, wherein the improvement is that a light-scattering (i.e., light-diffusing) plate having a suitable area is provided in front of the light-rec... | 02/10/1976 |
