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| Number | Title | Issue Date |
| 8120865 | Image degradation prevention optical apparatus An optical apparatus which is capable of preventing degradation of image quality caused by an ND filter. The optical apparatus incorporates an aperture stop having an aperture variable in size, and an ND filter movable with respect to the aperture of the aperture st... | 02/21/2012 |
| 7933083 | Diaphragm device A diaphragm device with which individual wavelengths or ranges of wavelengths in the path of a beam of spectrally dispersed light can be suppressed. Such a diaphragm device comprises at least one array of diaphragms, wherein the individual diaphragms of the array ar... | 04/26/2011 |
| 7835092 | Medium for a color changer A flexible medium for a scrolling color changer and method of making thereof. The medium is made by applying an ink using a Meyer Rod which has varying cell lengths along its length. This leaves varying size cells of ink at different locations along the length of th... | 11/16/2010 |
| 7706090 | Diaphragm device A diaphragm device with which individual wavelengths or ranges of wavelengths in the path of a beam of spectrally dispersed light can be suppressed. Such a diaphragm device comprises at least one array of diaphragms, wherein the individual diaphragms of the array ar... | 04/27/2010 |
| 7672070 | Methods and apparatus providing improved visual capabilities of optical instruments An apparatus for forming an image has one or more lenses in an optical path, at least one angular-sensitive light transmission filter in the optical path, in which transmission varies with change in angular orientation of the filter with reference to the direction o... | 03/02/2010 |
| 7586703 | Sequential colour illumination system, method for producing a colour wheel for said system and a colour segment device A sequential illumination system for a visual display unit has a light source emitting a polychromatic light beam towards the visual display unit within a wavelength range having at least three primary colors, and a color wheel provided with at least three transmiss... | 09/08/2009 |
| 7436449 | Electronic imaging system The invention relates to an electronic imaging system such a video camera or digital camera, whose thickness or size is reduced while performance degradation is reduced as much as possible. The system comprises a zoom lens system comprising a first G1, a seco... | 10/14/2008 |
| 7428051 | Device for the IR-spectrometric analysis of a solid, liquid or gaseous medium The invention relates to a device for the IR-spectrometric analysis of a solid, liquid or gaseous medium. The device includes a process probe, which has a reflection element. The device additionally includes a linear variable filter, at least one detector element, a... | 09/23/2008 |
| 7399087 | Segment type color wheel and manufacturing method of same A color wheel includes a plurality of color filter segments disposed so as to form a disk configuration, and a support member to fixedly set the plurality of color filter segments in place. Each of the color filter segments has a circular outer circumference, an inn... | 07/15/2008 |
| 7321462 | Fluorescence microscope An inverted fluorescence microscope is described which irradiates an excitation light onto a sample for observation of a fluorescent image of the sample. The fluorescence microscope includes (a) a transmissive illumination light source, which is arranged above a sta... | 01/22/2008 |
| 7303287 | Compensation of light source intensity pulse in scrolling colour type projection system A scrolling colour projection system comprising a lamp (4) with a pulsed drive current (20) and a colour scanner (6, 8a, 8b, 8c, 9) for generating a light beam (5b) with a plurality of scro... | 12/04/2007 |
| 7295392 | Color wheel with aligned segments A color wheel for use in projector systems comprises a disc shaped hub, rotatable around a central axis and color filter segments arranged radially to said central axis and affixed to said hub. This color ring is arranged concentrically with respect to said axis and... | 11/13/2007 |
| 7295391 | ND filter for aperture device and aperture device comprising ND filter This invention decreases deformation of a plastic substrate caused by thermal expansion and contraction in an evaporation process of forming a multi-layered film of an ND filter, thus helping prevent wrinkles. The plastic substrate serving as the base of the ND filt... | 11/13/2007 |
| 7277176 | Emission filter X-Y array An imaging system for obtaining images of a specimen that includes a novel filtering system for filtering radiation emitted from the specimen. The imaging system includes a camera and a novel filter grid that is controllably movable relative to the camera in a manne... | 10/02/2007 |
| 7268961 | Color wheel, and method and jig for producing same In a color wheel comprising a plurality of color filter segments arranged so as to form a disk and a support member fixed to the color filter segments, the color filter segments are each outlined only by a circular arc and two straight lines passing through the cent... | 09/11/2007 |
| 7268927 | Tunable optical filter array and method of use According to an exemplary embodiment of the present invention, an optical apparatus includes an optical filter array which comprises a plurality of optical filter elements, wherein at least one of the optical filter elements is adapted for tuning to two or more wave... | 09/11/2007 |
| 7253977 | Monolithic color wheel and process for fabrication of the same A method for fabricating a monolithic color wheel. The method includes (a) preparing a square transparent substrate; (b) forming a plurality of color filters on the square transparent substrate; and (c) cutting the square transparent substrate and the color filters ... | 08/07/2007 |
| 7253928 | Imaging optical system and image reading apparatus using the same Obtained are an imaging optical system having a simple structure in which imaging position deviation due to deformation caused by a weight of an off-axial optical element is reduced and an image reading apparatus using the same. According to an imaging optical syste... | 08/07/2007 |
| 7252391 | Method of producing an image A method of producing an image comprising impinging a beam of light on first region of a dynamic filter. The dynamic filter comprising at least two regions having different light transmission characteristics. A first region of the dynamic filter transmits a first tr... | 08/07/2007 |
| 7253575 | Industrial optical shutter A highly versatile optical shutter for industrial and scientific applications is disclosed. The has a aperture which defines a light path through the shutter, and a shutter vane or blade that is moved into and out of the light path using a precision, microprocessor ... | 08/07/2007 |
| 7233450 | Reflective color wheel A reflective color wheel is adapted to receive composite source light provided by a light source, and includes a plurality of multi-layer light-reflecting sections for splitting the composite source light into a plurality of colored light beam components. Each of th... | 06/19/2007 |
| 7230779 | ND filter and aperture diaphragm apparatus An ND filter is made of a transparent substrate having a plane. An optical film is formed on the plane of the transparent substrate. The optical film has a lamination structure including a light absorption film and a dielectric film, and has a variable transmission ... | 06/12/2007 |
| 7218464 | Aligning-assembling method for color wheel A coating method for a color filter, including the steps of: coating a first photoresist layer on a substrate; forming at least a aligning pattern and a first color film pattern on the first photoresist layer by exposure and development; coating a first dye on the a... | 05/15/2007 |
| 7212359 | Color rendering of illumination light in display systems A method and a color rendering filter for compensating for deficiency in illumination light from a light source in display systems are provided. The color rendering filter has a color that is determined based upon the spectrum, sensitivity of viewer's eyes over the ... | 05/01/2007 |
| 7209303 | Method for balancing color wheel and structure thereof A method for balancing a color wheel. The rotational unbalance vector of a driving motor is measured, including its unbalance amount and direction. The unbalance of a color wheel is adjusted to make its unbalance amount to be the same of the driving motor. The color... | 04/24/2007 |
| 7199952 | Color wheel, and color wheel assembly incorporating same There is provided a color wheel including a plurality of color filters arranged so as to form a disk, and a retainer member disposed at a center of the disk and formed into a C-ring defining an open mouth portion through which an area of one color filter is exposed.... | 04/03/2007 |
| 7190536 | Color filter disc and process of making the same A process for making a unitary color filter disc includes the steps of preparing a disc member having an annular surface, and providing a plurality of differently colored segments on the annular surface. Each of the colored segments is provided by partially masking ... | 03/13/2007 |
| 7158323 | Apparatus for switching optical low pass filters for use in optical instrument Disclosed is an optical filter switching apparatus used in an optical instrument for converting externally input image information into video image information and outputting the video image information. The apparatus comprises: an optical filter holding section hol... | 01/02/2007 |
| 7145652 | Microscope with position detection of changers of optical components A microscope with optical components which are provided in the illumination beam path and/or observation beam path and/or detection beam path for exerting different spectral influences on at least one of the beam paths mentioned above. An arrangement comprising a li... | 12/05/2006 |
| 7144134 | Light projector A light projector is provided which includes an elliptical reflector, a first spherical retro-reflector, the first retro-reflector having an first aperture formed therein, the first aperture having a first diameter and a first center-point, a second spherical retro-... | 12/05/2006 |
| 7113353 | Method of fixing color wheel to motor A color wheel is attached to a hub of a motor before the hub is built in the motor. In this process, portions of the hub which do not impact the rotation accuracy of the motor are held by appropriate clamping means and attaching means so that excessive stress and he... | 09/26/2006 |
| 7092490 | Filter system for radiological imaging A filtering system for use in, for example, a radiological imaging in a mammography apparatus. The system has a roundabout carrying a set of filtration plates. Each filtration plate is held on the roundabout by a joint. In a parked or stationary position, each plate... | 08/15/2006 |
| 7052146 | Replaceable color wheel A projector, comprising a user replaceable color wheel. ... | 05/30/2006 |
| 7038847 | Fluorescence microscope Fluorescence microscope with blocking filters for a portion of the light emitted by a specimen have markings referring to the orientation of their wedge angle. A marking to which the marking on the filter can be oriented in a defined manner is preferably provided on... | 05/02/2006 |
| 7038867 | Filter for display system A filter for a display system is provided which includes a fluid chamber having a selectively moveable filtering fluid, plural electrodes being coupled with the fluid chamber to accommodate establishment of an electric field whereby the filtering fluid may be select... | 05/02/2006 |
| 7027238 | Method and apparatus for color-neutral brightness regulating of a light source A method and an apparatus for regulating the brightness of a light source (2), configured as an incandescent lamp, in the illumination beam path (8) of a microscope (1), the brightness of the light source (2) being modifiable by increasin... | 04/11/2006 |
| 7021011 | Decorative luminous panel assembly and its support The decorative luminous panel assembly and its support comprises a panel of translucent synthetic material bearing decorative designs and capable of receiving the illumination from a light source incorporated in the support, said panel carrying a plurality of thread... | 04/04/2006 |
| 7018071 | Light apparatus A light apparatus, which produces a central motionless light beam and at least one light beam rotating around the central beam, includes a cylindrical housing, a parabolic reflector, a lamp having a light sours in reflector's focus and a rotating non-transparent dis... | 03/28/2006 |
| 7018048 | Projector exhaust fan An exhaust sirocco fan exhausts the air inside the projector outside. An inlet of the exhaust sirocco fan is disposed along the plane orthogonal to the optical path plane formed by the optical unit, i.e. along the thickness direction of the projector. In other words... | 03/28/2006 |
| 7016129 | Optical filter, method of making optical filter, light amount adjusting apparatus and optical equipment An optical filter which can be manufactured at low cost and is excellent in optical characteristics is disclosed. The optical filter has a transparent substrate and a first layer which is formed on the surface of the transparent substrate. Here, the first layer has ... | 03/21/2006 |
