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| Number | Title | Issue Date |
| 7310164 | Printer, printing control apparatus and printing system using unique job identifiers, and control method therefor When a command for the status response is issued from a host computer to a printer, a data-receipt administration portion adds, to the received command, an ID peculiar to each command, and stores the commands and the peculiar ID; and a data-transmission administrati... | 12/18/2007 |
| 7253972 | Telephoto lens system A telephoto lens system of a four-lens-group arrangement includes a negative first lens group, a positive or negative second lens group, a negative third lens group and a positive fourth lens group. The telephoto lens system of the four-lens-group arrangement is con... | 08/07/2007 |
| 7203384 | Implement for optically inferring information from a planar jotting surface The present invention relates to a jotting implement that infers hand-jotted information from a jotting surface. The hand-jotted information is any information marked on the jotting surface as a result of writing, jotting, drawing, sketching or in any other manner o... | 04/10/2007 |
| 7180542 | Imaging lens device and digital camera having the imaging lens device Imaging lens device has a zoom lens system and an image sensor. The zoom lens system has a first reflecting surface, a first movable lens unit, an aperture stop, a second reflecting surface, a second movable lens unit. A first reflecting surface bends a first optica... | 02/20/2007 |
| 7161699 | Printer apparatus and printer system using unique job indentifiers, and control method therefor When a command for the status response is issued from a host computer to a printer, a data-receipt administration portion adds, to the received command, an ID peculiar to each command, and stores the commands and the peculiar ID; and a data-transmission administrati... | 01/09/2007 |
| 7158253 | Printer, printing control apparatus and printing system using unique job identifiers, and control method therefor When a command for the status response is issued from a host computer to a printer, a data-receipt administration portion adds, to the received command, an ID peculiar to each command, and stores the commands and the peculiar ID; and a data-transmission administrati... | 01/02/2007 |
| 7136237 | Optical system Provided is an optical system, in which various aberrations including chromatic aberrations are preferably corrected and which is easily manufactured and has a superior environmental resistance, comprising a solid material (GIT1) having two surfaces both on a... | 11/14/2006 |
| 7057831 | Optical system An optical system of a telephoto type is disclosed, in which a refractive optical element made of a solid material that satisfiesνd | 06/06/2006 |
| 6985184 | Electronic camera An improved electronic camera is disclosed which enables higher light-detecting efficiency of the electronic image pick-up device and reduces focusing errors in the periphery of the image field. The present invention arranges the detectors of an optical pick-up devi... | 01/10/2006 |
| 6747814 | Wide-angle lens The present invention provides a high-performance, thin wide-angle lens suitable for imaging elements with high pixel counts. The wide-angle lens includes, from an object side to an image plane side: a first lens group including a first lens having a negative refrac... | 06/08/2004 |
| 6671106 | Telescopic lens system A telescopic lens system includes a positive first lens group, and a positive second lens group. The first lens group includes cemented lens elements having a positive lens element and a negative lens element. The second lens group includes a positive len... | 12/30/2003 |
| 6421189 | Telephoto lens system A telephoto lens system including a positive first lens group, a negative second lens group, and a positive third lens group, in this order from the object; and focusing is performed by moving the second lens group along the optical axis. The telephoto le... | 07/16/2002 |
| 6313958 | Diffractive-refractive photographic optical system An optical system includes positive and negative refractive optical elements and positive and negative diffractive optical elements for diffracting light from the positive and negative optical elements.... | 11/06/2001 |
| 5841588 | Zoom lens system with vibration reduction means A zoom lens system with vibration-reduction function, comprising, in order from an object side: a first lens group having a positive refractive power; a second lens group having a negative refractive power; a third lens group having a negative refractive power; a f... | 11/24/1998 |
| 5640277 | Large aperture medium telephoto lens system The lens system includes, in order from an object side, a 1-st lens unit having a positive refractive power which has at least two positive lens elements and a negative lens element positioned on an image side of said positive lens elements, a 2-nd lens u... | 06/17/1997 |
| 5490014 | High-aperture-ratio inner-focus telephoto lens A high-aperture-ratio inner-focus telephoto lens comprises a first lens group of positive refracting power, a second lens group of negative refracting power and a third lens group of positive refracting power arranged in the named order from the object si... | 02/06/1996 |
| 5323270 | Internal focusing telephoto lens An internal focusing telephoto lens includes, in succession from the object side, a first lens unit of positive refractive power having at least a positive first lens component, a second lens unit having negative refractive power and movable along the opt... | 06/21/1994 |
| 5321551 | Projection lens apparatus for rear projection television A projection lens apparatus for a rear projection television. The projection lens apparatus includes a first lens in which the negative power of the lens gradually increases from the central portion of the lens, having almost no power, to the peripheral p... | 06/14/1994 |
| 5172274 | Large aperture, medium telephoto lens system A large aperture, medium telephoto lens system is disclosed which is composed of a front group GF that comprises, in order from the object side, at least two positive lens elements having a strong convex surface directed toward the object and a... | 12/15/1992 |
| 4793698 | Telephoto lens system A telephoto lens system, both compact and capable of close-in focusing, comprising, in order from the object side, a first lens unit of positive power, a second lens unit of negative power, a third lens unit of either power and a fourth lens unit of posit... | 12/27/1988 |
| 4726669 | High relative aperture objective lens system with compound focusing A high relative aperture objective lens system with a compound focusing system, comprising four lens components of varying respective distances, in which the first component is of positive refractive power, the second component is of positive refractive p... | 02/23/1988 |
| 4610514 | Telephoto lens system A telephoto lens system comprises, from the object side to the image side, a first positive lens unit, a second negative lens unit, and a third positive lens unit, the second lens unit alone being shiftable along the optical axis with the first and third ... | 09/09/1986 |
| 4573770 | Telephoto lens system A telephoto lens system comprising a front lens group, and a rear lens group comprising a first subgroup and a second subgroup, said front lens group comprising a first positive lens component, a second positive lens component and a negative lens componen... | 03/04/1986 |
| 4488788 | Small-size wide angle lens Improvement in a small-size wide angle lens having a refractive power arrangement of so-called telephoto type, which has been demanded to meet the need of miniaturization of cameras. The lens of this type is composed of a front group having a positive ref... | 12/18/1984 |
| 4465345 | Small-size telescopic lens A small-size telescopic lens system with a brightness of 1:4, an angle of view of &#b1;6°, and a telescopic ratio of about 0.8, which is constructed of front and back groups of lens elements, is disclosed. The first, second, third, fourth and fifth lens ... | 08/14/1984 |
| 4429958 | Relatively wide angle telephoto type lens system A wide angle telephoto type lens system is provided having from object to image side a first positive lens component, a second negative lens component, a third positive lens component, a fourth positive lens component, and a rearmost fifth negative lens c... | 02/07/1984 |
| 4359272 | Internal focusing telephoto lens A new and improved telephoto lens comprising a stationary front positive group, a movable second group employed for internal focusing, a stationary third positive group and a stationary fourth negative group. The lens has a very low telephoto ratio and a ... | 11/16/1982 |
| 4338001 | Telephoto lens system A telephoto lens system has a convergent forward group and a divergent rearward group. The forward group includes a first lens which is a biconvex lens having its surface of greater curvature facing the object side, a second lens which is a biconcave lens... | 07/06/1982 |
| 4251133 | Large aperture telephoto-lens The present invention relates to a large aperture telephoto-lens consisting of a positive front lens group including a positive lens, a negative lens and a positive lens in sequence and a rear lens group arranged distant from the front group on the optica... | 02/17/1981 |
| 4241983 | Telephoto lens A telephoto lens comprising; a front lens group comprising a positive lens, a negative lens and positive lens arranged in the written order from the object side, and having a positive refracting power, and a rear lens group arranged with a large space fro... | 12/30/1980 |
| 4214816 | High speed telephoto lens system An improved compact high speed telephoto lens system of a modified Ernostar type is provided, having from the object to the image side of the lens system, a first lens of a positive meniscus shape, convex to the object side; a second lens of a positive me... | 07/29/1980 |
| 4206976 | Compact telephoto lens A five component Ernostar type telephoto lens having a focal length in the intermediate order up to 135 m/m with a telephoto effect down to 0.84 but with limitation of zonal spherical aberration to a minimum is disclosed. The lens system comprises, from f... | 06/10/1980 |
| 4204747 | Method of focussing in a photographic lens system A method of focussing in a photographic lens system consisting of a front convergent lens group and a rear divergent lens group, the front lens group comprising a first lens component having a positive refracting power, a second lens component having a ne... | 05/27/1980 |
| 4183626 | Lenses The invention provides a telephoto lens with a positive front group of lens elements, a negative middle group of lens elements and a rear positive part comprising a lens element or group of lens elements. The front group of elements includes at least one ... | 01/15/1980 |
| 4176913 | Telephoto lens with large relative aperture A telephoto lens with large relative aperture comprises a first converging lens group, a diverging lens group and a second converging lens group arranged in this order as viewed from the object side. The first converging lens group has two positive lens c... | 12/04/1979 |
| 4139264 | Miniaturized telephoto camera lens assembly A telephoto lens assembly comprises a first positive lens, a second negative lens, third and fourth positive meniscus lenses having higher object side curvatures, a fifth negative lens, and a sixth positive lens adhered to the latter. The optical paramete... | 02/13/1979 |
| 4134645 | Miniaturized telephoto camera lens A miniaturized telephoto camera lens assembly comprises a first positive lens, a second negative lens, and a third positive meniscus lens having a higher object side curvature. These lenses are disposed close together, and relatively remote from closely s... | 01/16/1979 |
| 4126378 | Telephoto lens system having an improved focusing capability A telephoto lens system having improved focusing capabilities is provided wherein a first lens group of an overall positive refractive power is mounted on the object side of a second lens group of an overall negative refractive power. The lens components ... | 11/21/1978 |
| 4114992 | Variant Ernostar type long focus lens system A variant Ernostar type long focus lens system having a very short overall length comprising a first positive miniscus lens, a second positive meniscus lens and a third positive meniscus lens which are arranged very close to one another, a fourth negative... | 09/19/1978 |
| 4113357 | Telephoto lens system A telephoto lens system consists of a first convergent group and a divergent group disposed rearwardly of the first group for forming a substantially afocal converter, and a second convergent group disposed rearwardly of said divergent group. The first co... | 09/12/1978 |
