Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7710667 | Imaging module with symmetrical lens system and method of manufacture An imaging module and method of fabrication. The method comprises forming a first lens wafer with a plurality of outer negative lenses and forming a second lens wafer with a plurality of inner negative lenses The method further comprises bonding the first lens wafer... | 05/04/2010 |
| 7339699 | Image processing apparatus An image processing apparatus includes a first sensor having a plurality of reading elements arranged in the primary scanning direction, a second sensor disposed in parallel with the first sensor and by a predetermined lines in the secondary scanning direction, an i... | 03/04/2008 |
| 7312935 | Optical system and optical apparatus having the same At least one exemplary embodiment is directed to an optical system which includes a plurality of refractive optical elements arranged substantially symmetrically with respect to an aperture-stop. Furthermore the optical system comprises a refractive optical element ... | 12/25/2007 |
| 7230775 | Electronic imaging system The invention relates to an electronic imaging system wherein an image pickup device is horizontally located while ensuring the space for a reflective member thereby achieving height, length and cost reductions. The imaging system comprises a taking lens and an imag... | 06/12/2007 |
| 7164542 | Zoom lens, variable magnification group, camera unit and portable information terminal unit Disclosed is a zoom lens herein. The zoom lens has a first group G1 having a negative focal length, a second group G2 having a positive focal length and a third group G3 having a positive focal length in turn from an object side, and has an open... | 01/16/2007 |
| 6909559 | Lens for reading an original, method and apparatus for reading an original, and image forming apparatus A lens for reading an original, comprises five lenses as a whole including two positive and two negative lenses, an aspherical surface provided on at least one surface of the five lenses, a construction of four lens groups for five lenses which include a cemented le... | 06/21/2005 |
| 6825994 | Photographic optical system In a photographic optical system disclosed in the present invention, there are provided a first focusing part for focusing while exposure is not performed on a light-sensitive surface and a second focusing part for focusing while exposure is performed on the light-s... | 11/30/2004 |
| 6665131 | Imaging optical system An imaging optical system having superior optical performance with the improved correction of chromatic aberration over a wide wavelength range extending from the visible wavelength range to the infrared wavelength range is provided. According to one aspe... | 12/16/2003 |
| 6407864 | Automated system for testing two dimensional detector arrays and optical systems using sequential filters An automatic testing illumination system has advantages of speed, quick calibration ability and therefore high accuracy over conventional illuminators. An spherical light source/concentrator exit port is rapidly and sequentially covered by at least one au... | 06/18/2002 |
| 6396648 | Image reader which can shorten focal length in optical system having optical lens while keeping predetermined image reading width An image reader including a light source irradiating light to a reading object, a reading device reading an image on the reading object based on the radiated light; and a lens focusing the image onto the reading device and having a characteristic by which... | 05/28/2002 |
| 6163414 | Image reading apparatus An image reading apparatus includes: illuminating means for illuminating an original with light; a lens forming an image of reflected light from the original, the lens having a resolution characteristic in which a resolution in a vertical scanning directi... | 12/19/2000 |
| 5930056 | Gauss lens A Gauss lens achieves a high reading density when used with an imaging magnification of about 0.16535 and reduces the cost while providing a sufficient angle of view and brightness. The Gauss lens includes: a first lens group including a first lens having... | 07/27/1999 |
| 5774272 | Low-magnification apochromatic microscope objective lens Low-power objective lenses for a microscope are disclosed. The objective lenses exhibit apochromatic optical performance at a numerical aperture of at least 0.1 and have a magnification of about 2× or less. Each such objective lens comprises, in order fr... | 06/30/1998 |
| 5731915 | Readout lens In a Xenotar type image-readout lens of a four-group five-element configuration, predetermined conditional expressions are satisfied so as to attain a bright lens system, while favorably correcting chromatic aberration. In a Xenotar type lens system compo... | 03/24/1998 |
| 5621574 | Objective lens system utilizing axial gradient index (grin) lens elements Axial gradient index of refraction lens elements are used in a lens system, for instance for a photographic objective lens, to correct monochromatic and chromatic lens aberrations, thereby reducing the number of lens elements required to achieve good opti... | 04/15/1997 |
| 5040884 | Reading lens system for use in scanner A reading lens system for a scanner is used at a reduced magnification so as to read an original image at a high speed, and comprises, successively in order from an object toward an image, a first lens unit to a fifth lens unit and an aperture disposed be... | 08/20/1991 |
| 4784480 | Focusing-in-part lens system An objective lens comprising a front lens group of positive power followed by a diaphragm, and a rear lens group of positive power axially movable for focusing and comprised of a plurality of members with the strongest diverging surface of concave curvatu... | 11/15/1988 |
| 4770513 | Projection lens A projection lens for projecting an image onto a screen includes, in succession from the screen side, a first lens component having a positive refractive power, a second lens component having a positive refractive power and whose both lens surfaces are co... | 09/13/1988 |
| 4753523 | Low magnification projection objective lens A low magnification projection objective lens for use in projection examination instrument. The projection objective lens comprises three lens units. The first unit is a converging lens unit composed of a positive lens component on the image side and a ne... | 06/28/1988 |
| 4681407 | Two-glass photographic objective color-corrected at four wavelengths A photographic objective comprising six lens elements is well-corrected for both monochromatic and chromatic aberrations, and is color-corrected at four wavelengths in a band extending from the visible to the near infrared regions of the electromagnetic s... | 07/21/1987 |
| 4671627 | Gaussian lens A high resolving power Gaussian lens used for a facsimile or the like which uses high-density solid image forming elements. To achieve this object, it is necessary to maintain a high resolving power to cover the marginal portion of the image plane. In the... | 06/09/1987 |
| 4377326 | Macro lens system A macro lens system assuring aberrations favorably corrected within a wide magnification range from 1.7× to 8× comprising a first positive meniscus lens component, a second negative cemented lens component, a third negative cemented meniscus lens compon... | 03/22/1983 |
| 4168882 | Optical systems An optical system for conveying an optical image having two first biconvex od lenses arranged end to end on a common optical axis in spaced relationship, and between said first rod lenses but not in contact with them a pair of second rod lenses also arrang... | 09/25/1979 |
