Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7388714 | Independent focus compensation for a multi-axis imaging system A multiple-axis imaging system having optical elements whose optimal image positions can be individually adjusted, comprising a plurality of optical array elements having respective optical axes and being individually disposed with respect to one another to image re... | 06/17/2008 |
| 7362493 | Micromirror and post arrangements on substrates A micromirror of a micromirror array of a spatial light modulator used in display systems comprises a mirror plate attached to a hinge that is supported by two posts formed on a substrate. Also the mirror plate is operable to rotate along a rotation axis that is par... | 04/22/2008 |
| 7289272 | Optical system including an anamorphic lens An optical system includes a primary lens group having a central beam path therethrough and including a front lens group and a rear lens group. An anamorphic lens group lies on the central beam path and is positioned between the front lens group and the rear lens gr... | 10/30/2007 |
| 7167321 | Optical systems and methods employing adjacent rotating cylindrical lenses An optical system includes a pair of adjacent cylindrical lenses and a target positioned in a round-spot plane following the pair of cylindrical lenses. At least one of the cylindrical lenses is rotatable about the optical axis, relative to the other cylindrical len... | 01/23/2007 |
| 7167297 | Micromirror array In order to minimize light diffraction along the direction of switching and more particularly light diffraction into the acceptance cone of the collection optics, in the present invention, micromirrors are provided which are not rectangular. Also, in order to minimi... | 01/23/2007 |
| 7095563 | Anamorphic converter, lens system, and shooting system An anamorphic converter, which is disposed at an image side of an image-forming optical system, includes a first lens unit having one of positive and negative optical power, a second lens unit including an anamorphic lens, and a third lens unit having positive optic... | 08/22/2006 |
| 7075702 | Micromirror and post arrangements on substrates A micromirror of a micromirror array of a spatial light modulator used in display systems comprises a mirror plate attached to a hinge that is supported by two posts formed on a substrate. Also the mirror plate is operable to rotate along a rotation axis that is par... | 07/11/2006 |
| 7075559 | 16:9 Aspect ratio and anamorphic image processing A method and apparatus is described for receiving a first data stream comprising a graphic image having an aspect ratio of 16:9 into a computer system, capturing the image within a storage device of the computer system, and displaying the image on a graphical user i... | 07/11/2006 |
| 7061561 | System for creating a patterned polarization compensator A system for creating a patterned polarization compensator (550) has a retardance characterization system (560) for optically scanning the spatially variant retardance of a spatial light modulator (210). A compensator patterning system (565 | 06/13/2006 |
| 7023606 | Micromirror array for projection TV In order to minimize light diffraction along the direction of switching and more particularly light diffraction into the acceptance cone of the collection optics, in the present invention, micromirrors are provided which are not rectangular. Also, in order to minimi... | 04/04/2006 |
| 7023512 | Spatially patterned polarization compensator A modulation optical system (40) provides modulation of an incident light beam. A wire grid polarization beamsplitter (240) receives the beam of light (130) and transmits a beam of light having a first polarization, and reflects a beam of light ... | 04/04/2006 |
| 7012731 | Packaged micromirror array for a projection display In order to minimize light diffraction along the direction of switching and more particularly light diffraction into the acceptance cone of the collection optics, in the present invention, micromirrors are provided which are not rectangular. Also, in order to minimi... | 03/14/2006 |
| 7006275 | Packaged micromirror array for a projection display In order to minimize light diffraction along the direction of switching and more particularly light diffraction into the acceptance cone of the collection optics, in the present invention, micromirrors are provided which are not rectangular. Also, in order to minimi... | 02/28/2006 |
| 7006630 | Methods and apparatus for digital content protection A multilayer digital content protection system, particularly for a digital cinema application is provided. Detection of unauthorized activity at the time it is occurring is provided using a first protection layer. Two layers of imperceptible watermarks, one camcorde... | 02/28/2006 |
| 6995920 | Anamorphic converter To obtain an anamorphic converter of the rear converter system which is especially most suitable for a converter for the cinema and excellent in optical performance, and in which an effective image surface of an imaging optical system can be sufficiently utilized. T... | 02/07/2006 |
| 6954245 | Display apparatus with two polarization compensators A projection display apparatus (10) uses a modulation optical system (200) that includes a liquid crystal device (210) in combination with a wire grid polarization beamsplitter (240), a wire grid polarization analyzer (270) and a p... | 10/11/2005 |
| 6909473 | Display apparatus and method A projection display apparatus (10) uses a modulation optical system (200) that includes a liquid crystal device (210) in combination with a wire grid polarization beamsplitter (240), a wire grid polarization analyzer (270) and a p... | 06/21/2005 |
| 6717745 | Optical systems and methods employing rotating cylindrical lenses/mirrors An optical system includes a first cylindrical optical element (lens or mirror), and a second cylindrical optical element positioned in a round-spot plane following the first cylindrical optical element. At least one of the cylindrical optical elements is rotatable ... | 04/06/2004 |
| 6661393 | Scanned display with variation compensation A display apparatus includes a scanning assembly that scans about two or more axes, typically in a raster pattern. A light source emits light toward the scanning assembly such that the scanning assembly simultaneously scans more than one of the beams. The... | 12/09/2003 |
| 6535636 | Method for automatically detecting digital images that are undesirable for placing in albums A method for automatically classifying a digital image as a dud, the method comprises the steps of receiving the digital image; determining individually or any combination of sharpness,;contrast, noise, and exposure of the digital image; determining a thr... | 03/18/2003 |
| 6512636 | Anamorphic lens for digital projection An anamorphic lens for a digital projection display system comprising a projection lens and an optical axis has an anamorphic factor between 1.3 and 2.0. The anamorphic lens includes a first afocal part placed in front of the projection lens and a second ... | 01/28/2003 |
| 6504652 | Apparatus and method for laser processing A CO2 laser beam 12 is converted into a beam of uniform intensity at the position of a phase matching element 15 by an intensity converting element 14 and the phase matching element 15. Then, the uniform intensity beam irradiates a mask 17 cont... | 01/07/2003 |
| 6317171 | Rear-screen projection television with spatial light modulator and positionable anamorphic lens A television receiver (10) that has a spatial light modulator (15) and a projection lens (17a) and that projects images to a screen (18). If the aspect ratio of the image to be displayed does not match that of the spatial light modulator (15), an anamorph... | 11/13/2001 |
| 6301059 | Astigmatic compensation for an anamorphic optical system A lens system defined along an X-Y-Z coordinate system transforms an elliptical optical beam defined as exhibiting a first, fast axis component and a second, slow axis component, into an essentially circular optical beam. A first and a second lens interce... | 10/09/2001 |
| 6259567 | Microlens structure having two anamorphic surfaces on opposing ends of a single high index substances and method of fabricating the same A structure and method for circularizing and collimating incident light involves a substrate having first and second opposing surfaces, a first anamorphic surface positioned on the first surface and a second anamorphic microlens positioned on the second s... | 07/10/2001 |
| 6219186 | Compact biocular viewing system for an electronic display Low-cost plastic optics allow biocular viewing of video images with a single electro-optic display device. Folded and unfolded dual off-axis configurations use collimated illumination and intermediate imaging optics to fill both eyepieces from a single di... | 04/17/2001 |
| 6181482 | Variable ratio anamorphic lens An anamorphic lens attachment to be used in conjunction with a basic lens. The attachment provides a variable anamorphic ratio. The attachment comprises a first lens group having positive refractive power in a first direction, a second lens group having n... | 01/30/2001 |
| 5930050 | Anamorphic lens for providing wide-screen images generated by a spatial light modulator An anamorphic lens (11) for use in a display system (10) that has a spatial light modulator (12) and a projection lens (13) and that projects images to a screen (14). The anamorphic lens (11) is placed between the projection lens (13) and the screen (14).... | 07/27/1999 |
| 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 |
| 5757544 | Image display apparatus A head-mounted image display apparatus having an exit pupil that is enlarged without causing an increase in the size of a relay optical system or a reduction in the size of a projected image. The head-mounted image display apparatus has an image display d... | 05/26/1998 |
| 5699190 | Lenticular media having spatially encoded portions A lenticular media (10) has an encoded portion (12) adjoining a main portion (14). The encoded portion (12) is located to provide alignment and registration for precisely determining the location of lenticules (16) in the main portion (14).... | 12/16/1997 |
| 5596456 | Achromatic anamorphic prism pair An achromatic anamorphic prism pair for the conversion of the elliptical output beam of a tunable diode laser to a circular beam. The achromatic design prevents a directional shift in the output beam with respect to the optical axis of the system laser wa... | 01/21/1997 |
| 5541774 | Segmented axial gradient lens A segmented axial gradient lens and a lens system 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 either planes inclined at an angle to the optical axis, wedg... | 07/30/1996 |
| 5499061 | Projection system and display apparatus for compressing and expanding aspect ratio of a picture A projection system for pictures and a projection display apparatus which are designed to improve the luminance and contrast of a magnified picture on a projection screen by increasing the luminous flux projected within the effective size of projection op... | 03/12/1996 |
| 5465178 | Focusing optical system for semiconductor lasers The invention is directed to a focusing optical system for semiconductor lasers, which is regulated in terms of magnification power in both its directions normal to the optical axis, so that the back focus of sufficient magnitude can be made equal in both... | 11/07/1995 |
| 5386252 | Projection system and display apparatus for compressing and expanding aspect ratio of a picture A projection system for pictures and a projection display apparatus which are designed to improve the luminance and contrast of a magnified picture on a projection screen by increasing the luminous flux projected within the effective size of projection op... | 01/31/1995 |
| 5373395 | Optical system to obtain uniform illumination from diode laser The diode laser having an elliptic beam and a Gaussian intensity distribution is transformed by graded index lenses and beam shaping prisms to a circular beam of small diameter and then focused to a point. The focused beam is then magnified by a compound ... | 12/13/1994 |
| 5184222 | Wipe generator having start position and width controller A wipe waveform signal generating apparatus includes a wipe width generator generating a wipe width. A wipe waveform extended width holding device outputs a horizontal extended width and a vertical extended width. A wipe waveform calculator receives the w... | 02/02/1993 |
| 5184223 | Electronic imaging apparatus The electronic imaging apparatus comprises an imaging lens system for forming an image of an object at magnifications different between an x-z section and y-z section when the object is placed on a z-axis, an imaging optical system, an image sensor having... | 02/02/1993 |
| 4805998 | Variable anamorphic lens system A variable anamorphic lens system adaptable for use on an image recording instrument such as a camera (10). The system consists of an image transformation lens (14), a focusing lens (18) and an aperture stop (22). The transformation lens (14) and focusing... | 02/21/1989 |
