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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 7113708 | Data communications link A data communications link uses a multi-power level optical source to encode and transmit data words along a communications channel to a receiver station. A received signal condition monitor senses the level of a pre-determined characteristic and transmits a control... | 09/26/2006 |
| 6473118 | Imaging systems An imaging system comprises an image-data collection station (1) having a platform (2) which is rotatable about an azimuthal axis. Several image sensors (3) are mounted on and rotate with the platform (2). A static monitoring station (7) includes a comput... | 10/29/2002 |
| 6260466 | Target aiming system Assessing the accuracy with which a round fired from a gun hits an intended target is achieved and alignment of the gun is corrected by monitoring the target with an image sensor which is associated with a computer enabling a frame by frame analysis and c... | 07/17/2001 |
| 6188706 | Solid state lasers A solid state laser has an elongate slab of lasing material having a rectangular cross section with the lower face of the slab contacting a slab mount which is of a high thermal conductivity material. Energy to drive the lasing medium is provided by a fla... | 02/13/2001 |
| 6061916 | Head tracking system A head tracking system 10 comprises a radiation emitter 18 and a radiation sensor 16 connected to a tracking processor 12. The emitter 18 has an output 46 producing radiation with spectral peak in the range 1000 nm to 1100 nm from a conventional LED 40 wi... | 05/16/2000 |
| 6039632 | Solid state lasers A solid state laser has an elongate slab of lasing material having a rectangular cross section with the lower face of the slab contacting a slab mount which is of a high thermal conductivity material. Energy to drive the lasing medium is provided by a fla... | 03/21/2000 |
| 5982536 | Display system A panoramic display system for use in a vehicle equipped with a plurality of episcopes (22) includes an information gathering sensor and a plurality of displays (24) for the gathered information. Each display (24) is associated with a respective episcope ... | 11/09/1999 |
| 5753379 | Protective coatings for optical components An optical component having a protective layer provided on a surface thereof, the protective layer preventing the component from being damaged by high velocity impacts from small particles or water droplets. The protective coating comprises a layer of gal... | 05/19/1998 |
| 5726814 | Multiple field of view changing apparatus for an optical system A three field of view change apparatus has a cubic carousel 1 mounted for rotation about a rotation axis 2 which is coincident with a diagonal of the carousel 1. The rotation axis 2 makes an angle of 54.736° with a fixed optical axis 5 so that carousel 1... | 03/10/1998 |
| 5719671 | Boresighting optical system An optical system 10 comprises a light source 12 which may be either a point source or collimated and an arrangement 11,22 for directing a beam of light from the source 12 towards a boresighting arrangement 16 associated with an imaging lens 14 for imagin... | 02/17/1998 |
| 5399298 | Optical filters with coatings transmissive in narrow waveband regions An optical filter comprises a multilayer coating adherent to a substrate, the coating comprising at least four superimposed layer collections. Each layer collection has ordered first, second and third layers of which the first and third layers are made of... | 03/21/1995 |
| 5142605 | Integrated optic components An integrated optic component comprises a substrate (10) carrying a layer (11) of polymeric material which has an aliphatic or aromatic polymer backbone with bonded sidegroups exhibiting hyperpolarizability. The layer (11) shows a refractive index pattern... | 08/25/1992 |
| 4859536 | Optical coating Optical components (16), particularly germanium components, are provided with a coating on exposed surface (15) within a vacuum chamber (17) by production of a glow discharge plasma containing carbon and another depositable element from feedstock gases wh... | 08/22/1989 |
| 4848886 | Submarine periscope systems A submarine periscope system has a mast head 7 with a casing 10 from which protrudes a shaft 16 carrying observation instruments which are protected by a housing 8. A seal arrangement 30 is provided at the interface between the casing 10 and shaft 16 whic... | 07/18/1989 |
| 4832722 | Method of manufacturing flexible optical fiber bundles Flexible coherent optical glass fiber bundles are manufactured from rigid coherent optical glass fiber bundles by selecting the fiber bonding agent to be an acid-leachable glass having a silica content in the range 8-15% molecular and removing acid-leacha... | 05/23/1989 |
| 4789339 | Gunnery training system A gunnery training system comprises a conventional armored vehicle having a gun and a fire control system to which is releasably attached portable training equipment (TT), which in operation uses almost all features of the conventional equipment within th... | 12/06/1988 |
| 4771721 | Submarine periscope systems A submarine periscope of the non-hull penetrating type has an extendable hoist (11) secured at one end to the submarine hull (2) and at its other end carries a sensor pod (8). Pod (8) is rotatable by a motor (13) carried by the hoist (11) and is electrica... | 09/20/1988 |
| 4763988 | Periscope apparatus comprising a single inverted pyramid A periscope head (10) is formed by a hollow structure of inverted pyramidal form connected to the periscope mast in the vicinity of the apex of the pyramidal form. The exterior surfaces (11, 12) of the head (10) are highly reflective and are substantially... | 08/16/1988 |
| 4760770 | Fire control systems A fire control system comprises a platform (10) rotatable in azimuth on which are mounted a gun (11) first and second sighting devices (15,25) each of which is movable in elevation, each sighting device (15,25) having its sight line nominally aligned with... | 08/02/1988 |
| 4740442 | Optical coating Optical components (16), particularly germanium components, are provided with a coating on exposed surface (15) within a vacuum chamber (17) by production of a glow discharge plasma containing carbon and another depositable element from feedstock gases wh... | 04/26/1988 |
| 4695119 | Infrared optical system A forward looking infrared optical system comprises a refractor telescope 20 in combination with a powered window and fold mirror arrangement 30. Arrangement 30 comprises a powered window element J with concentric spherical refractive surfaces having thei... | 09/22/1987 |
| 4672617 | Lasers A multiple wavelength operating laser (10) having a pump cavity or enclosure (14) surrounded by an optical pumping arrangement (17) comprises a plurality of substantially concentric tubes (21A, 21B) each having windows for emission of radiation and enclos... | 06/09/1987 |
| 4659171 | Infrared afocal refractor telescope An infrared afocal refractor telescope (40) comprises a zoom system (27), a collecting system (28) and an eyepiece system (30) arranged in a common optical axis (26). The zoom system (27) is formed by a fixed objective lens component (K) and by a first le... | 04/21/1987 |
| 4632498 | Variable magnification infrared objective lens assembly An infrared objective lens assembly comprises a four-component zoom system (25) which accepts from object space (22) radiation in the infrared waveband, and a one-component collecting system (26) which forms a real image (24) of that radiation. The compon... | 12/30/1986 |
| 4613898 | Imaging systems An imaging system (10) comprises an imaging data-collection station (11) having a camera (15) with a field of view (16) mounted on platform (13) rotatable about azimuthal axis (14). Collected image data is delivered on line (20) to a monitoring station (1... | 09/23/1986 |
| 4594508 | Radiation scanning systems A radiation scan system (10) incorporates a scanning device (13) which transfers radiation between transmitting station (12) and receiving station (11) with simultaneous mapping of a point (14) in station (11) into a line (15) in station (12). Station (12... | 06/10/1986 |
| 4561063 | Apparatus for identifying the position of a body Apparatus (10) for identifying the position of a body (21) in a scene (20) comprises a first station (11) incorporating a raster-scan imaging device (15) having a field of view (19) with azimuthal and elevational rotational freedom and variable magnificat... | 12/24/1985 |
| 4558222 | Infrared radiation detecting systems An infrared radiation detecting system comprises an optical imaging system (25) for receiving radiation from a field of view (23) and delivering that radiation to an image surface (16). A background limited detector unit (26) having a detecting surface (&... | 12/10/1985 |
| 4519673 | Optical waveguide slip ring assembly An optical slip ring comprises a housing made of low refractive index material which defines a hollow toroid (10) and a pair of passageways (15A, 15B) leading from the toroid (10). One passageway (15B) leaves the toroid (10) steplessly in a clockwise dire... | 05/28/1985 |
| 4505535 | Infrared objective lens systems An infrared objective lens system (15) comprises a primary lens group (13) air spaced from a secondary lens group (14) by means of a support assembly (16). The primary lens group (13) and secondary lens group (14) are aligned on a common optical axis (10)... | 03/19/1985 |
| 4494819 | Telescope objective system for the infrared range A telescope objective system (10) is formed by a primary lens having a single lens element (A) aligned on a common optical axis (11) with a secondary lens having two lens elements (B,C) the shape and power distribution of lens elements (A,B,C) being such ... | 01/22/1985 |
| 4494198 | Gun fire control systems A gun fire control system comprises a computer (15) having a first memory (15A) preprogrammed with true range to standard ballistic range conversion data and is operable on receipt of a true range value from a rangefinder (16) to output the corresponding ... | 01/15/1985 |
| 4486069 | Afocal telescopes An afocal telescope (20) comprises an objective system (21) and an eyepiece system (23) aligned on a common optical axis (19), the objective system (21) forming a real image (24) of radiation received from object space (17) and eyepiece system (23) being ... | 12/04/1984 |
| 4479695 | Afocal refractor telescopes An afocal refractor telescope is formed by a fixed focus achromatic telephoto objective system (10) and a fixed focus eyepiece system (11) aligned on a common optical axis (12) and is arranged to provide an internal real image (13). The objective system (... | 10/30/1984 |
| 4469396 | Afocal dual magnification refractor telescopes An afocal dual magnification refractor telescope is formed by a fixed focus achromatic telephoto objective system (21) formed by a primary objective lens element (H) and a secondary objective lens element (G) aligned on a common optical axis (19) with a f... | 09/04/1984 |
| 4464048 | Laser rangefinders A laser rangefinder comprises a transmitter (19) controlled by sequence-controlled pulses emitted by a timer (16) following actuation of a switch (17) by an operator. The receiver of the rangefinder comprises an avalanche photodiode (APD) (10) the sensiti... | 08/07/1984 |
| 4461534 | Optical scanning system with two sequential reflection stations An optical scanning system comprises a rotor assembly (10) rotatable about axis (11) and having a first reflective zone (12) composed of planar facets (12A, 12B, 12C, etc.) and a second reflective zone (13) composed of facets (13A, 13B, 13C etc.) which ma... | 07/24/1984 |
| 4444805 | Optical coating A process for coating the surface of a material with a carbonaceous coating by vacuum deposition derives the carbon in substantially pure form from a hydrocarbon gas plasma, the surface to be coated being coupled to an A.C. power source operating at a fre... | 04/24/1984 |
| 4418361 | Tracking link In a system (10) comprising a trunnion-mounted aiming device (11) and a trunnion-mounted sighting device (14) interconnected by a tracking link (13) and having an associated visual display (16) providing an image of the field of view containing the sight ... | 11/29/1983 |
| 4411488 | Afocal zoom refractor telescopes An afocal zoom refractor telescope 20 is formed by a variable magnification achromatic objective system 18 and a fixed focus eyepiece system 19 aligned on a common optical axis 17 and arranged to provide an internal real image I. The objective system 18 i... | 10/25/1983 |
