"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 7336403 | Optical element and illumination apparatus having same An object of the present invention is to efficiently shape a light flux emitted from a light source into a linear shape and so as to provide an optical element having high versatility that can be widely used irrespective of the original sizes and to provide an illum... | 02/26/2008 |
| 7280718 | Reflective adjustable optical deflector and optical device employing the same The optical deflector includes the electro-optical element to deflect light by utilizing its refractive index variation, and it also includes a reflective adjustable optical deflector element with a reflective element to reflect the deflected light. This arrangement... | 10/09/2007 |
| 7261429 | Optical assembly and corresponding illumination device This optical assembly comprises a securing support (40), an optical focusing element (44) and a reflecting mirror (42) which is suitable for reflecting an incident light beam (F1) towards the optical focusing element (44) in order ... | 08/28/2007 |
| 7237914 | Light condenser A light condenser suitable for EUV lithography that includes reflective rings concentric to an optical axis. Each ring has a reflective surface to reflect light rays emanating from a light source so that the light rays converge towards a mask to produce Köhler illu... | 07/03/2007 |
| 7220035 | Compact, high-efficiency illumination system for video-imaging devices An illumination system for a video-imaging device has a light source and a collector of light from the light source. The collector is formed according to the principles of non-imaging optics and receives a portion of the light from the light source. The collector is... | 05/22/2007 |
| 7192146 | Solar concentrator array with grouped adjustable elements A ground-based tracking heliostat array comprises a first plurality of elongate row mounts. The elongate row mounts are positioned at least partially between, and are supported by, a first side bracket and a second side bracket. The row mounts are rotatable in a fir... | 03/20/2007 |
| 7110107 | Capillary assay device and method A device and method for detecting a signal from an analytical sample is provided. The device comprises a platen with a first and second surface, a number of collection structures extending from the second surface. Each collection structure has a capillary channel ru... | 09/19/2006 |
| 7081584 | Solar based electrical energy generation with spectral cooling Method and system for converting solar energy into electrical energy utilizing serially coupled multijunction-type photovoltaic cells in conjunction with a form of spectral cooling. The latter cooling is carried out by removing ineffective solar energy components fr... | 07/25/2006 |
| 7068446 | Compact non-imaging light collector A nonimaging optical system for processing a first and second light distribution. The nonimaging optical system includes at least two refractive surfaces, at least one reflective surface nearer to the first light distribution along at least one ray path than the nea... | 06/27/2006 |
| 7011419 | Method and system for changing the cross-sectional profile of a beam of light A technique for changing the cross-sectional profile of a beam of light from, for example, circular or elliptical to thin involves dividing the beam of light into cross-sectional portions, rotating the cross-sectional portions, and then concatenating the rotated cro... | 03/14/2006 |
| 6994082 | Lightweight, low-cost solar energy collector A lightweight solar concentrator of the reflecting parabolic or trough type is realized via a thin reflecting film, an inflatable structural housing and tensioned fibers. The reflector element itself is a thin, flexible, specularly-reflecting sheet or film. The film... | 02/07/2006 |
| 6971756 | Apparatus for collecting and converting radiant energy A radiant energy collecting and converting device having at least one array of slat-like concave reflective elements and an elongated receiver. The device efficiently concentrates and converts radiant energy, such as sunlight, to other useful types of energy, such a... | 12/06/2005 |
| 6945660 | Device for capturing and emitting radiations The disclosure is a radiation collecting/emitting device to/from different spatial directions, the apparatus in the preferred design is manufactured in a single piece and the work surface is modified to obtain a reflective surface for the radiations of interest. In ... | 09/20/2005 |
| 6811271 | Electromagnetic wave focusing device The electromagnetic wave focusing device has a mirror group consisting of a focal-line type primary reflective mirror and secondary reflective mirror which have a unique parabolic cross-sectional shape. Incident light rays are primarily reflected by the primary refl... | 11/02/2004 |
| 6793356 | Omnidirectional vision sensor An omnidirectional vision sensor includes: an optical system including a body-of-revolution mirror having a convex portion and having a symmetrical structure with respect to a revolution axis, wherein the body-of-revolution mirror includes a cutaway section in the c... | 09/21/2004 |
| 6713178 | Highly tetrahedral amorphous carbon coating on glass A soda inclusive glass substrate is coated with a highly tetrahedral amorphous carbon inclusive layer that is a form of diamond-like carbon (DLC). In certain embodiments, the amorphous carbon layer includes at least about 35% sp3 carbon-carbon bonds, more... | 03/30/2004 |
| 6467934 | Reflector system for elongated light source A luminaire has two oppositely positioned rows with reflectors made of separate sectors. The individual reflectors are separated by edge portions, which are positioned transversely to the longitudinal axis of the luminaire and transversely to a light emis... | 10/22/2002 |
| 6466603 | Low loss resonator A Low loss resonator is provided, which consist of two confocal parabolic reflectors and two flat reflectors forming a closed cavity capable of direct to the output window, stimulated emissions generated in the axes parallels to the axis of symmetry and t... | 10/15/2002 |
| 6431713 | Mirror assembly for trucks An improved mirror assembly comprises a combination of mirrors at the front corners of the vehicle along with a pair of side mirrors and a mirror at the back of the vehicle. The mirrors are so positioned to eliminate any blind spots along the boundaries o... | 08/13/2002 |
| 6406155 | Parabolic reflectors A parabolic reflector assembly (10) comprising a base member (11) formed of magnetic material and defining a parabolic surface (12), and a flexible magnet sheet (18) carrying a reflective sheet (19) magnetically bonded to the parabolic surface to form a p... | 06/18/2002 |
| 6392687 | Method and apparatus for implementing a panoptic camera system A panoptic camera system that can be used to capture all the light from a hemisphere viewing angle is disclosed. The panoptic camera comprises a main reflecting mirror that reflects light from an entire hemisphere onto an image capture mechanism. The main... | 05/21/2002 |
| 6382803 | Faceted reflector assembly A faceted reflector assembly including a plurality of reflector segments which are preferably, but not necessarily, comprised of pre-anodized and enhanced aluminum having a specular, semi-specular or a diffuse finish. The reflector segments include interl... | 05/07/2002 |
| 6361175 | Optical design for a reflector for reflecting light beams The invention relates to a reflector having reflection surface with facets for reflecting light beams and for generating a light field with a hollow basic element which presents a first end for accommodating an illuminant (mounting end), as well as a seco... | 03/26/2002 |
| 6357880 | Display apparatus with corrosion-resistant light directing film The present invention is a display apparatus that provides protection against damage for a metallic layer. The display apparatus includes a light modulating layer, a polarizer, and a light directing film. The light directing film includes a prismatic stru... | 03/19/2002 |
| 6328450 | Oval, constant radius convex mirror assembly A safety mirror lens assembly includes a mirror unit with a mirror lens that has a three-dimensional convex/ellipsoid reflective surface which terminates in an oval shape peripheral edge. The reflective surface is such that a notional line traced to coinc... | 12/11/2001 |
| 6264336 | Display apparatus with corrosion-resistant light directing film The present invention is a display apparatus that provides protection against damage for a metallic layer. The display apparatus includes a light modulating layer, a polarizer, and a light directing film. The light directing film includes a prismatic stru... | 07/24/2001 |
| 6231198 | Reflective optical integrator An optical integrator comprising a two dimensional array of mirror segments formed from an off-axis section of a parent parabolic surface. The mirror segments are arranged so that the focus of each mirror segment is in a plane. Incident collimated radiati... | 05/15/2001 |
| 6227674 | Oval, constant radius convex mirror assembly A safety mirror lens assembly includes a mirror unit with a mirror lens that has a three-dimensional convex/ellipsoid reflective surface which terminates in an oval shape peripheral edge. The reflective surface is such that a notional line traced to coinc... | 05/08/2001 |
| 6199990 | Rotatable mirror assembly for optical path reversal in a laser scanning machine A method of reversing a laser beam in a machine includes orienting a pair of reflective surfaces at an angle of approximately 90° relative to each other. The laser beam is directed in a first direction such that the laser beam sequentially impinges upon ... | 03/13/2001 |
| 6186632 | Condenser for ring-field deep-ultraviolet and extreme-ultraviolet lithography A condenser for use with a ring-field deep ultraviolet or extreme ultraviolet lithography system. A condenser includes a ripple-plate mirror which is illuminated by a collimated beam at grazing incidence. The ripple plate comprises a plate mirror into whi... | 02/13/2001 |
| 6097556 | Irradiance redistribution guide An irradiance redistribution guide (IRG) for providing from a radiation source having a nonuniform irradiation distribution, a predetermined irradiance distribution over a predetermined target area spaced away from the IRG, includes a tubular reflective i... | 08/01/2000 |
| 5966256 | Vehicle lamp with reflection mirror and a method of forming the same A fundamental surface for a reflection surface of a reflection mirror of a vehicle lamp is formed in a manner such that a curved surface where an insertion hole, through which a light source is inserted into the reflection mirror in the direction oblique ... | 10/12/1999 |
| 5854713 | Reflection type angle of view transforming optical apparatus In a reflection type angle of view transforming optical apparatus for transforming an angle of view in an image apparatus and so forth, sufficient strength can be provided and process is facilitated by using reflecting mirrors in a wide angle optical syst... | 12/29/1998 |
| 5844730 | Light-supplying optical device The line bow phenomenon is reduced by appropriately setting the reflective surface and/or the external shape of an optical element (e.g., a toric mirror) thereby realizing approximately linear illumination of the surface of the original document that is b... | 12/01/1998 |
| 5768039 | Head-mounted image display apparatus A head-mounted image display apparatus (HMD) including an ocular optical system, which has an F-number of 1.5 to 3 and enables a flat and clear image to be observed at a view angle of up to 60° or more with substantially no aberration. The HMD has at lea... | 06/16/1998 |
| 5751503 | Light-weight reflector facet A light weight arcuate reflector facet, for a solar concentrator comprises a thin mirrored glass sheet such as a microsheet, and a backing sheet or substrate, the glass sheet being bonded to the backing sheet, with the backing sheet providing a smooth sur... | 05/12/1998 |
| 5613761 | Material and method for fabricating a light fixture reflector, and, reflector produced thereby A lightweight reflector is fabricated from corrugated plastic sheet by bonding a mirrored film on a cover layer having a great number of closely spaced lengthwise depressions so that a corresponding series of striations form a reflector surface having a m... | 03/25/1997 |
| 5235470 | Orthogonal parabolic reflector systems A reflecting surface which is open at least at one axial end and in an axial section conforms to an axial section through a geometric surface generated by rotating a parabolic curve about an axis normal to the parabola axes. An elongated source/sink exten... | 08/10/1993 |
| 5220462 | Diode glazing with radiant energy trapping A transparent glazing material with a plurality of concentrating lenses on its top surface such that incident radiation on the top surface is focused to pass through apertures in a corresponding plurality of integral reflective surfaces with a plurality o... | 06/15/1993 |
| 5198648 | Code sensor with multi-faceted reflector for sensing plural image distances A bar code scanner having a lens, a reflector, a sensor, and a detection unit. The lens is arranged to focus an image of a bar code to be scanned along an image path. The reflector is angled obliquely to the image path so as to reflect images at an angle ... | 03/30/1993 |