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| Number | Title | Issue Date |
| 8169718 | Wide-angle zoom lens The present invention is directed to wide-angle zoom lenses dedicated to single-lens reflex digital cameras, which attains zoom ratio greater than 2. Such a wide-angle zoom lens has four groups of lens pieces, namely comprising the leading or foremost 1st lens group... | 05/01/2012 |
| 7974017 | Zoom lens and image pickup apparatus A zoom lens includes, in order from its object side, a first lens unit having a negative refracting power, a second lens unit having a positive refracting power, a third lens unit having a negative refracting power, and a fourth lens unit having a positive refractin... | 07/05/2011 |
| 7924510 | Imaging lens and imaging apparatus equipped with the imaging lens An imaging lens is provided and includes: in order from the object side, a first lens group including a biconcave lens; a second lens including two lenses whose convex surfaces are arranged opposite to each other and having a positive refractive power as a whole; a ... | 04/12/2011 |
| 7920341 | Optical system, imaging apparatus, and method for forming image by the optical system Providing an optical system having excellent optical performance, an imaging apparatus, and a method for forming an image by the optical system. The optical system includes, in order from an object, a first lens group G1 having negative refractive power, a se... | 04/05/2011 |
| 7885017 | Objective lens system for endoscope An objective lens system for endoscope comprising at least a first negative lens element, a second positive lens element, an aperture stop, and a cemented lens component consisting of a third negative lens element and a fourth positive lens element, and being config... | 02/08/2011 |
| 7830621 | Small refractive zoom lens optical system A zoom lens optical system includes: a first lens group that is provided close to an object, has a negative refractive power in total, and includes an optical part having a surface that reflects light; a second lens group that has a negative refractive power in tota... | 11/09/2010 |
| 7697221 | Imaging lens and imaging device An imaging lens includes, in order from an object side, a first lens G1, a second lens G2, a third lens G3, an aperture stop St and a fourth lens G4. The first lens is a negative lens having a meniscus shape with a convex surface directed... | 04/13/2010 |
| 7660049 | Optical lens system for taking image An optical lens system for taking image comprises four lens elements with refractive power, from the object side to the image side: a first meniscus lens element with negative refractive power; a second lens element with positive refractive power having a convex obj... | 02/09/2010 |
| 7636205 | Wide-angle imaging lens A wide-angle imaging lens comprises, in order from an object: a first lens having a negative refractive power; a second lens having a positive refractive power with a convex face directed to the object; ... | 12/22/2009 |
| 7623306 | Zoom lens and imaging apparatus incorporating the same A zoom lens comprises, in order from its object side, a front lens group having negative refracting power at a wide-angle end and a rear lens group having positive refracting power at the wide-angle end. The front lens group comprises, in order from the object side,... | 11/24/2009 |
| 7599130 | Image reading lens and image reading apparatus An image reading lens is provided and includes: in order from an object side of the image reading lens, a first lens of a negative lens having a meniscus shape directing a concave surface toward the object side thereof; a second lens having a biconvex shape; a stop;... | 10/06/2009 |
| 7593171 | Zoom lens and image pickup apparatus including the same A zoom lens includes first to fourth lens units which respectively have negative, positive, negative, and positive refractive powers in order from the object side to the image side. Distances between the first and second lens units, the second and third lens units, ... | 09/22/2009 |
| 7551373 | Image pickup optical system An image pickup optical system for forming a light flux from an object into an optical image on an image pickup element, is provided with, in order from an object side thereof: a first lens with a negative power in a meniscus shape including a convex surface facing ... | 06/23/2009 |
| 7486449 | Objective lens for endoscope, and imaging apparatus for endoscope using the same A front group consists of two concave lenses. A rear group consists of: a positive lens in which the object-side surface has a larger radius of curvature; and a cemented lens configured by a positive lens in which the object-side surface has a larger radius of curva... | 02/03/2009 |
| 7486450 | Lens system and projector utilizing the same A high-performance lens system including lens elements of small diameters for projecting on to a screen or the like in an enlarged fashion images from light valves such as mainly DMDs (Digital Micromirror Devices) for forming images by changing reflecting directions... | 02/03/2009 |
| 7477460 | Image reading lens and image reading apparatus An image reading lens is provided and includes: in order from an object side of the image reading lens, a first negative lens having a meniscus shape; a second lens having a double-convex shape; an aperture stop; a third positive lens having a meniscus shape with a ... | 01/13/2009 |
| 7446955 | Wide-angle lens system A wide-angle lens system comprises, sequentially from the object side to the image side: a first lens element, a second lens element, a third lens element, an aperture and a fourth lens element. If the field of view of the wide-angle lens system is as high as 140 de... | 11/04/2008 |
| 7443599 | Magnification varying optical system and image taking apparatus A magnification varying optical system that directs light from an object to an image sensor includes in order from the object side: a first lens unit having negative optical power and including an optical axis changing element that changes the optical axis; a second... | 10/28/2008 |
| 7436600 | Zoom lens system A zoom lens system comprises: a first lens group with a negative refractive power, a second lens group with a negative refractive power, a third lens group with a positive refractive power and a fourth lens group with a positive refractive power. When zooming betwee... | 10/14/2008 |
| 7405890 | Imaging lens It is to provide a super-wide-angle imaging lens that can be reduced in size and weight, maintain excellent optical performance, and is low in cost. The imaging lens comprises, in order from an object side towards an image surface side, a first lens which is a menis... | 07/29/2008 |
| 7403345 | Zoom optical system and electronic imaging apparatus using the same A zoom optical system comprises in order from an object side, the first lens group consisting of one cemented lens in which each of the surfaces contacted with air is aspherical, and having negative refracting power as a whole, the second lens group consisting of on... | 07/22/2008 |
| 7375906 | Wide-angle lens system and image-taking device A wide-angle lens system has, from the object side thereof: a first lens element having a negative optical power and having a meniscus shape convex to the object side; a second lens element having a biconcave shape; a third lens element having a biconvex shape; and ... | 05/20/2008 |
| 7365912 | Compact zoom lens A compact zoom lens suitable for an imaging optical system using a solid-state image sensing device is provided. The zoom lens includes a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a third lens gr... | 04/29/2008 |
| 7321469 | Zoom lens A zoom lens is provided and has: a first lens of a negative lens; a second lens of a positive lens; an aperture stop; a third lens of a negative lens; and a fourth lens of a positive lens in this order from an object side of the zoom lens. A zooming operation of the... | 01/22/2008 |
| 7292398 | Optical system and optical apparatus including optical system At least one exemplary embodiment is directed to an optical system which includes at least one first refractive optical element, which includes a solid material satisfying the following conditional expression (1), and at least one second refractive optical element, ... | 11/06/2007 |
| 7289279 | Lithographic objective having a first lens group including only lenses having a positive refractive power A projection objective includes a first lens group (G1) of positive refractive power, a second lens group (G2) of negative refractive power and at least one further lens group of positive refractive power in which a diaphragm is mounted. The first lens... | 10/30/2007 |
| 7286302 | Optical system, image pickup device and digital apparatus A wide angle of view optical system, suitable for monitor cameras such as an in-vehicle camera and a security camera, having a reduced optical entire length and aberration correction for forming an optical image on light-receiving surfaces of an imaging element havi... | 10/23/2007 |
| 7283312 | Fisheye lens unit To provide a technique to constitute a fisheye lens unit with a small number of lenses. A fisheye lens unit uses a predetermined projection method, wherein a variation for the predetermined projection method is not less than the variation for an equidistant projecti... | 10/16/2007 |
| 7253834 | Image pickup apparatus having image pickup optical system An image pickup apparatus comprising a first lens unit which comprises at least a negative lens element and at least a positive lens element and has negative refractive power, a second lens unit which has positive refractive power, and an optical path bending reflec... | 08/07/2007 |
| 7248416 | Wide-angle zoom lens system A wide-angle zoom lens system includes a negative first lens group, a positive second lens group, a negative third lens group and a positive fourth lens group), in this order from the object. Upon zooming from the short focal length extremity to the long foca... | 07/24/2007 |
| 7239457 | Wide angle lens system and camera There is provided a wide angle lens system configured to obtain excellent image forming performance even in a half field angle region of 40 degrees to 50 degrees. A wide angle lens system is constituted of a first lens having a negative refractive power, a light pat... | 07/03/2007 |
| 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 |
| 7227682 | Wide-range, wide-angle compound zoom with simplified zooming structure A zoom lens is disclosed having a zoom ratio larger than four with a field of view at the short focal length position larger than 85 degrees and with a minimal number of moving groups. The zoom lens utilizes a compound zoom structure comprising an NP or NPP zoom ker... | 06/05/2007 |
| 7218455 | Zoom lens and imaging apparatus A zoom lens having at least a first lens group including a reflection member for bending an optical axis fixedly during zooming and having a negative refractive power, a second lens group having a negative refractive power, and a third lens group arranged in the ord... | 05/15/2007 |
| 7215484 | Zoom lens A zoom lens system includes a first lens group which has a negative refractive power, a second lens group which has a positive refractive power, and a third lens group which has a positive refractive power in this order from the object side and changes the distances... | 05/08/2007 |
| 7212348 | Compact zoom lens system A compact zoom lens system includes, from the object side to the image side, a negative first lens group (1), a positive second lens group (2), a positive third lens group (3) and a positive fourth lens group (4). The first lens group is ... | 05/01/2007 |
| 7193786 | Zoom optical system and image pickup apparatus A zoom optical system according to the present invention is provided with, in order from an object side thereof: a first lens group having a negative refractive power; a second lens group having a positive refractive power; a third lens group having a negative refra... | 03/20/2007 |
| 7190532 | Imaging optical system and electronic apparatus using the same The image forming optical system comprises in order from an object side, a first lens having positive refracting power and a concave surface directed toward an object side, a second lens having double convex surfaces, an aperture stop,... | 03/13/2007 |
| 7180686 | Image pickup unit for endoscope An image pickup unit which consists of an objective optical system and a solid-state image pickup device: the objective optical system being composed of a first negative lens unit comprising a first meniscus lens element having a convex surface on the object side an... | 02/20/2007 |
| 7177098 | Image pickup lens An image pickup lens can form an excellent optical image on a compact image pickup element having a large number of pixels. The image pickup lens includes, sequentially from the object side, an optical aperture, a first lens made of glass and having at least a spher... | 02/13/2007 |
