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| Number | Title | Issue Date |
| 7995282 | Anamorphic optical system A pair of optical prisms arranged in a complementary relationship provides for anamorphic magnification and cooperates with a refractive or diffractive cylindrical lens element, the later of which generates an aberration that at least partially compensates an aberra... | 08/09/2011 |
| 7760438 | Air-to-water de-anamorphoser and method of air-to-water de-anamorphosis A full or partial air-to-water de-anamorphoser and method of air-to-water de-anamorphosis is provided. A housing has a planar transparent window in one end thereof adjacent to a defined air space. The housing is placed under the water's surface with an acute angle b... | 07/20/2010 |
| 7751124 | Anamorphic prisms Various embodiments and methods relating to groups of anamorphic prisms that are configured to reduce smile in a multi-beam optical system are disclosed. ... | 07/06/2010 |
| 7646546 | Anamorphic optical system providing a highly polarized laser output Apparatus and methods are disclosed for transforming a laser beam to a polarized shaped beam in, for example, a frequency converted laser system. In one embodiment, an anamorphic optical system includes a first prism and a second prism that can be configured to form... | 01/12/2010 |
| 7643218 | Light redirecting film having varying optical elements The invention relates to a light redirecting film comprising a thin optically transparent substrate having opposite sides, one side of the substrate substantially covered by elongated individual optical elements whose longest dimensions are substantially aligned in ... | 01/05/2010 |
| 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 |
| 7321542 | Beam shaping prism and optical pickup employing the same A beam shaping prism used in an optical pickup, the beam shaping prism includes a first prism having an incident surface and a second prism having an inclined surface. Since a beam entering the beam shaping prism makes right angles with a beam emerging therefrom, it... | 01/22/2008 |
| 7300168 | System for creating spectral displays A highly adaptable system for creating colorful spectral displays or for achieving a prismatic effect using visible light. The invention includes a fixed-angle or monolithic prismatic element fabricated from plate glass mirror material. A compound version of this mo... | 11/27/2007 |
| 7283314 | Zoom lens and image pickup apparatus including the same At least one exemplary embodiment is directed to a zoom lens which includes, in order from an object side to an image side, a first lens unit with a negative refractive power, a second lens unit with a positive refractive power, and a third lens unit with a positive... | 10/16/2007 |
| 7225984 | Systems and methods for providing multiple object planes in an optical image scanning environment Systems and methods for optically scanning multiple object planes are provided. One embodiment is a system for optically scanning multiple object planes comprising a platen and an optical head for scanning. The optical head comprises an optical delay element, a firs... | 06/05/2007 |
| 7188962 | Light modulator device A light modulator device includes a top plate and an angled extender coupled to the top plate. The angled extender includes an incident portion and an exit portion that is relatively thicker than the incident portion. ... | 03/13/2007 |
| 7172289 | Projection apparatus with colored light path combination through a transparent optical element A projection apparatus is formed employing a transparent optical element to receive a plurality of colored light bundles from a plurality of light sources along a plurality of optical paths and to emit the plurality of colored light bundles along a substantially com... | 02/06/2007 |
| 7170832 | Optical scanning device A optical scanning device (1) for scanning an information layer (2) with a radiation beam (25) in a writing mode and a reading mode comprises a radiation source (7) for emitting the beam and an objective lens (10) for converging th... | 01/30/2007 |
| 7151737 | Optical head and optical disc apparatus for focusing a collimated laser beam An optical head includes a laser source (11) irradiating the laser beam having a wavelength not longer than 500 nm, a collimator lens (13) for collimating the laser beam to the parallel rays, an optical beam shaping system (14, 15) that adjusts ... | 12/19/2006 |
| 7085053 | Beam shaping device, system for launching a light beam into an optical fiber, and beam rotation unit for such a beam shaping device or such a system A device for shaping the cross-section of a light beam, has at least one beam shaping unit with a beam splitter, beam deflector and beam combiner. The beam splitter can split a light beam which is incident on the beam shaping unit into two partial beams. The beam de... | 08/01/2006 |
| 7085065 | Variable focus optical apparatus A variable focus lens apparatus for use in spectacles or the like is formed from a fluid envelope comprising two sheets, at least one of which is flexible. The flexible sheet is retained in place between two rings, which are directly secured together. This may be by... | 08/01/2006 |
| 7050238 | Power combination optical system and light source module An optical system includes a plurality of separate light sources with a number M of the light sources arranged in a first direction and a number N of the light sources arranged in a second direction. Each of the light sources has an asymmetric light emission area. T... | 05/23/2006 |
| 6980358 | Turning prism for ultraviolet radiation A truncated triangular prism has an entrance and an exit face perpendicular to each other and a reflecting face inclined at an angle α to the entrance face where α is about 135°−θB, and where θB is the external Brewster angle for the mat... | 12/27/2005 |
| 6964484 | Overfill reduction for an optical modulator A technique is described to reduce overfill of light that has exited a light integrating device and is applied to an optical modulator in the form of an illuminating pattern. The illumination reduction technique makes the illuminating pattern more closely conform to... | 11/15/2005 |
| 6935757 | Multi-band direct vision prism A multi-band direct prism comprising at least first and second prismatic elements of disparate refractive indices facilitates the contemporaneous analysis of dispersed emergent light energy within at least two distinct and predetermined sets of energy wavelengths wh... | 08/30/2005 |
| 6903774 | Viewfinder device including first and second prisms to reflect light from outside the viewing area A thin viewfinder device includes, in order an object side to a viewing eye side, a first prism, and a second prism disposed separately from the first prim across an air gap. The first prism, the air gap and the second prism are arranged in such a manner that an obj... | 06/07/2005 |
| 6781740 | Achromatic phase shift device and interferometer using achromatic phase shift device The present invention relates to an achromatic phase shift device (1) for introducing a wavelength independent optical phase shift in a first optical beam (40) during operation, comprising at least one dispersive element (55k) formed ... | 08/24/2004 |
| 6678095 | Anamorphic optical system A pair of prisms arranged in a complementary relationship provides for anamorphic magnification and cooperates with a curved refractive element, the later of which generates an aberration that at least partially compensates an aberration generated by the ... | 01/13/2004 |
| 6624956 | Numerical aperture limiter The invention provides a numerical aperture limiter for an optical thermal imaging system, comprising at least one pair of wedge-like prisms made of a transparent material having a known index of refraction, the prisms of the pair being disposed in close ... | 09/23/2003 |
| 6560034 | Beam shaping optical system A beam shaping optical system which is provided with a first wedge prism having two refractive surfaces defining a first principal section, and a second wedge prism having two refractive surfaces defining a second principal section that is parallel to the... | 05/06/2003 |
| 6473250 | Beam deflector A beam deflector has first and second wedge prisms having refractive indices and geometries which are similar (in the case of the geometry to within arc minutes). The prisms are rotatable about an optical axis O defined by the direction of propagation of ... | 10/29/2002 |
| 6462880 | Bar code reader A bar code reader having two reading windows, i.e., a bottom window and a side window. An increased number of scanning lines are used for constituting scanning patterns for scanning bar codes, and the arrangement of the optical system is contrived to decr... | 10/08/2002 |
| 6429982 | Counter-rotating anamorphic prism assembly with variable spacing A counter-rotating anamorphic prism pair assembly with variable spacing allows the simultaneous adjustment of a prism pair using an adjustment member to circularize in cross section a range of elliptical laser beam cross sections. A first prism rotates an... | 08/06/2002 |
| 6421178 | Device and method for transforming optical beams The invention concerns a device for optically transforming at least a radiation beam having a width extending in the plane X-Y. The device including optical elements provided with optically active interfaces, arrange in the radiation path. So as to obtain... | 07/16/2002 |
| 6342981 | Zero-displacement phase retarder device and method An optical device includes a substrate 60 and three prisms 10, 20 and 30. The first prism 10 is disposed adjacent to an upper surface of the substrate 60. An incoming beam aperture 65 is positioned adjacent a first surface 12 of the first prism 10, the fi... | 01/29/2002 |
| 6282031 | Beam shaping optical system A beam shaping optical system which is provided with a first wedge prism having two refractive surfaces defining a first principal section, and a second wedge prism having two refractive surfaces defining a second principal section that is parallel to the... | 08/28/2001 |
| 6078441 | Optical device for producing rotational displacement of an incident image An array of graduated prisms disposed in a circle for rotating an incident image, the prisms are disposed with their end faces at the periphery of the circle and their apices at the center. The end faces are all oriented in the same direction either clock... | 06/20/2000 |
| 6038089 | Beam shaping optical system A beam shaping optical system which is provided with a first wedge prism having two refractive surfaces defining a first principal section, and a second wedge prism having two refractive surfaces defining a second principal section that is parallel to the... | 03/14/2000 |
| 5978148 | Beam projecting device A beam projecting apparatus includes a light source that emits a laser beam and a colliminating lens that renders the emitted laser beam a substantially parallel beam. A beam projecting device includes a beam projecting portion from which the laser beam i... | 11/02/1999 |
| 5953162 | Segmented GRIN anamorphic lens A segmented GRIN anamorphic lens and a lens array using such lenses are provided. The lens has an optical axis and is composed of a plurality of segments. The interfaces between the segments are planes or wedges inclined at an angle to the optical axis. A... | 09/14/1999 |
| 5825555 | Beam projecting apparatus A beam projecting apparatus has a light source and a reflecting device for reflecting and rotating a bundle of light emitted from the light source for forming a reference plane. A shape converting optical system is provided in an optical path from the lig... | 10/20/1998 |
| 5818645 | Multimode optical source and image scanning apparatus using the same A focused laser beam is provided using a multimode laser of a type that generates a diverging beam with an asymmetric cross section. A collimation lens receives and substantially collimates the diverging asymmetric beam. An anamorphic beam expander enlarg... | 10/06/1998 |
| 5815326 | Image display apparatus An image display apparatus which enables observation of a clear image at a wide field angle, and which is extremely small in size and light in weight and hence unlikely to cause the observer to be fatigued. The image display apparatus has an image display... | 09/29/1998 |
| 5715102 | Beam shaper device for optical read/write heads A beam shaper device for an optical read/write head on an optical disc drive is provided. This beam shaper device is particularly useful for shaping a laser beam originally emitted with an elliptical cross section, into having a substantially circular cro... | 02/03/1998 |
| 5701210 | Achromatic optical system for beam transformation and optical disk apparatus using the same An achromatic optical system for beam transformation is used for example with the optical head of an optical disk apparatus. This optical system is arranged in an optical path which is traversed by a beam emitted from a light source to reach a surface to ... | 12/23/1997 |
