Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8125700 | Optical scanning apparatus An optical scanning apparatus includes a first optical member for receiving a plurality of light beams with an interval and for causing a first group of beams to emerge with a narrower interval, the first optical member being rotatable to adjust the interval of the ... | 02/28/2012 |
| 8120830 | Optical scanning apparatus An optical scanning apparatus includes a first optical member for receiving a plurality of light beams with an interval and for causing a first group of beams to emerge with a narrower interval, the first optical member being rotatable to adjust the interval of the ... | 02/21/2012 |
| 8085471 | Light integrating device for an illumination system and illumination system using the same A light integrating device for an illumination system and an illumination system. The illumination system includes a first light source module and a second light source module providing a first light and a second light, respectively. The device includes first and se... | 12/27/2011 |
| 8009363 | Prism beamsplitters Embodiments of the present invention are directed to single prism beamsplitters and compound beamsplitters formed from combining one or more of the single prism beamsplitters. In one embodiment, the beamsplitters can be configured to produce one or more split beams ... | 08/30/2011 |
| 7855817 | Optical scanning apparatus including a plurality of optical members for adjusting an interval between laser beams on a surface An optical scanning apparatus includes a first optical member for receiving a plurality of light beams with an interval and for causing a first group of beams to emerge with a narrower interval, the first optical member being rotatable to adjust the interval of the ... | 12/21/2010 |
| 7817341 | Integrated TIR prism and lens element Disclosed is an optical component, which comprises a prism element adjacent to a lens element, where the two elements are separated by a small air gap. In disclosed embodiments, the elements have adjacent and parallel surfaces which are substantially planar and whic... | 10/19/2010 |
| 7764434 | Weapon sight A weapon sight of the kind comprising a lens having a partially reflecting surface, a light source spaced from the lens for emitting light towards the reflecting surface to produce a light spot by direct imaging of the light source on the surface to be superimposed ... | 07/27/2010 |
| 7738177 | Light source A light source for use in a projection system comprises a pair of lamps each effective to produce a substantially collimated beam. Part of the light emitted by each lamp is directed through the light originating part of the same, or another, lamp. A light combiner i... | 06/15/2010 |
| 7518803 | Dichroic prism, and prism unit and image projection apparatus employing same A dichroic film formed on a prism base member contains 10% by volume or more of a high-thermal-conductivity substance having a thermal conductivity of 20 W/mK or more at a temperature of 300 K. Preferably, the dichroic film is composed of high- and low-refractive-in... | 04/14/2009 |
| 7483216 | Integrated TIR prism and lens element An optical component includes a prism element adjacent to a lens element, where the two elements are separated by a small air gap. Elements of the optical component have adjacent and parallel surfaces which are substantially planar and which, with the small air gap,... | 01/27/2009 |
| 7440191 | Method for manufacturing cross prism For the purpose of depositing deviation-free dichroic coatings of high plane rectitude, there is disclosed a method starting with preparation of glass assembly units each composed of first and second glass members of different lengths. A first dichroic coating 10... | 10/21/2008 |
| 7429110 | Projector-type image display apparatus At least one exemplary embodiment is directed to a projector which includes several optical elements, reflective devices and beam splitters, arranged to reduce back reflection effects. At least one exemplary embodiment includes a mirror, two beam splitters, three re... | 09/30/2008 |
| 7428104 | Optical device for the combination of light beams An optical device for combining a first light beam and at least one second light beam includes a first beam splitting device, a second beam splitting device and a position detector. The first beam splitting device splits a first reference beam from the first light b... | 09/23/2008 |
| 7423806 | Microscope system with a beam hub unit having a beam multiplexer for alternatively selecting beam ports A microscope system having an objective lens (10) defining a central optical axis (14) of the microscope system; an optical beam hub unit (18, 20) having a center coinciding with the central optical axis, a plurality of optical beam ports (24... | 09/09/2008 |
| 7410508 | Apparatus for crystallizing semiconductor with laser beams Laser beams emitted by a plurality of laser sources are divided into a plurality of sub-beams, which are irradiated onto selected portions of an amorphous semiconductor on a substrate to crystallize the amorphous semiconductor. A difference in diverging angles betwe... | 08/12/2008 |
| 7408706 | Neutral white-light filter device A substantially neutral filter across the white-light spectrum is obtained by minimizing the wavelength-dependent effects of filtering components and of reflective coatings on surfaces. The incoming light is captured by a first prism and directed toward the interfac... | 08/05/2008 |
| 7401925 | Image projection system An image projector system includes an LED controller and first and second LEDs, a dichroic mirror. The LED controller controls the first and the second LED to emit first and second color lights, respectively. The second color light is of high luminance and is decomp... | 07/22/2008 |
| 7390095 | Projector Aspects of the invention can provide a projector that includes three optical modulators which modulate respectively red light, green light, and blue light, a color-synthetic optical system which synthesizes the light modulated by the three optical modulators, and a ... | 06/24/2008 |
| 7390094 | Method and apparatus to achieve a neutral dark state in image projection systems An absorptive layer is added to an image display system. The absorptive layer is selected to compensate for tint in a black state of a displayed image. In a Liquid Crystal On Silicon (LCOS) based light engine, blue wavelengths may cause a predominate tint in black p... | 06/24/2008 |
| 7387391 | Apparatus and method for mounting imagers on stress-sensitive polarizing beam splitters An optical device that includes an optical element, an imager, and a prism bracket. The optical element includes an optical element having first and second prisms coupled together. The imager is arranged adjacent to the first prism and configured to receive light fr... | 06/17/2008 |
| 7380949 | Light modulator device A method of reducing stray light contribution of a display system is described. Light rays are directed to at least one pixel of the display system and the light rays are modulated to form modulated light. In addition, the modulated light is directed to display opti... | 06/03/2008 |
| 7382537 | Optical film having prismatic faces directly formed with micro-lenses thereon An optical film comprising: a transparent supporting (or base) layer; a prismatic layer consisting of a plurality of prisms integrally formed on the supporting layer; and a plurality of micro-lenses integrally formed on a plurality of prismatic faces of the prisms, ... | 06/03/2008 |
| 7379242 | Polarization beam splitter and projection apparatus having the same The present invention provides a polarization beam splitter including a multilayer film formed by laminating a first layer having a refractive index in a first range, a second layer having a refractive index in a second range which does not overlap the first range, ... | 05/27/2008 |
| 7364302 | Projection display system using multiple light sources and polarizing element for using with same An image projection system has two illumination beams of different colors. A first polarizing beamsplitter (PBS) has first and second input faces. Light of the first color is incident on the first input face and the light of the second color is incident on second in... | 04/29/2008 |
| 7360899 | Beamsplitting structures and methods in optical systems Various embodiments involving structures and methods for illumination can be employed, for example, in projectors, head-mounted displays, helmet-mounted displays, back projection TVs, flat panel displays as well as other optical systems. Certain embodiments may incl... | 04/22/2008 |
| 7357511 | Stress birefringence compensation in polarizing beamsplitters and systems using same Some projection systems use a polarization beamsplitter (PBS) for coupling light to and from an image-forming device. The PBS is typically formed with a reflective polarizing layer disposed between glass covers. Stress birefringence in the glass cover lying between ... | 04/15/2008 |
| 7359122 | Prism assembly A prism assembly includes a first prism having a first front face, a first side face, and a first rear face, a second prism having a second front face parallel to the first rear face, a second side face, and a second rear face. The second prism is configured to dire... | 04/15/2008 |
| 7354179 | Prism set and light emitting apparatus using the same A prism unit includes a first prism having a first incident face and a first refraction face that is adjacent to and that cooperates with the first incident face to define a first angle ranging 50° to 70°, a second prism having a second incident face that is gener... | 04/08/2008 |
| 7351346 | Non-photolithographic method for forming a wire grid polarizer for optical and infrared wavelengths A method for forming a plurality of parallel metal lines on a substrate of thin film elastomeric material and a wire grid polarizer formed by such method. A sacrificial layer is formed by coating the substrate with a water soluble polymer while the substrate is stre... | 04/01/2008 |
| 7350928 | Projection display system A projection display system comprises an illumination device, a prism assembly, a projection lens and a reflective light valve. The prism assembly has a first light incident surface, a first light emitting surface and a second light emitting surface. The first light... | 04/01/2008 |
| 7344254 | Projection system with a common light source sharing system A projection display with a common light source sharing system for improved illumination uniformity is described. The common light source is coupled through a light-dividing prism to multiple integrators. Each integrator is coupled to one or more imaging devices tha... | 03/18/2008 |
| 7334897 | Display apparatus using LCD Panel A projection apparatus (10) has an illumination section with a light source (20) providing a substantially unpolarized illumination beam of multiple wavelengths. A multiple wavelength polarizer polarizes the substantially unpolarized illumination beam ... | 02/26/2008 |
| 7327518 | Attenuator for high-power unpolarized laser beams A method for attenuating an unpolarized laser beam includes separating the laser beam into two plane-polarized beams. The plane-polarized beams are polarization rotated. Each of the polarization-rotated beams is separated into two plane-polarized portions. One of th... | 02/05/2008 |
| 7327521 | Colored light synthesis element and projection device therewith The invention includes a first incidence plane, a second incidence plane, a third incidence plane, a first synthesis plane and a second synthesis plane that are interiorly orthogonal to each other. The first synthesis plane reflects light of a first color component ... | 02/05/2008 |
| 7322703 | Light emitting apparatus and projector An light emitting apparatus which illuminates an illumination area has a first light source which emits a first light, a second light source which emits a second light, a wheel which is provided with a transmission filter area which transmits the first light, and a ... | 01/29/2008 |
| 7303286 | Projection display device In a projection display device that is provided with a relay lens for converting flux that is emitted from a light source to a parallel flux for illuminating an image display element (DMD), and a total internal reflection prism for both directing flux that is emitte... | 12/04/2007 |
| 7302148 | Test head for optically inspecting workpieces An optical test head comprises a block of material with a plurality of optical paths extending therethrough. At least one of the optical paths is an input optical path for receiving laser light and holding a lens for focusing the laser light on a workpiece that is p... | 11/27/2007 |
| 7298558 | Electronic adjustable color filter device An electronically adjustable, combinational color filter device is provided for generating color light. Incoming light is split in a polarizing beam splitter/combiner into a first and a second element of light. One or more wave plates operate to modify the polarizat... | 11/20/2007 |
| 7270424 | Color separation prism assembly A color separation prism assembly. The color separation prism assembly includes a polarizing beam splitter and a plurality of prism blocks. The polarizing beam splitter is coated with a polarizing beam splitter coating on a diagonal plane thereof. A first filter and... | 09/18/2007 |
| 7267445 | Combiner, optical combiner module and digital light projection system using the same A projection system includes a light source, a beam splitter module, a projection lens, and an optical combiner module includes at least one light valve for forming the image. A light beam emitted from the light source is split by the beam splitter module into three... | 09/11/2007 |
