Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8169710 | Zoom lens and image capture apparatus An image capture apparatus includes: a zoom lens; and an image pickup device converting an optical image formed by the zoom lens into an electric signal. The zoom lens includes, in order from the object side, a first lens group with a negative focal length, a second... | 05/01/2012 |
| 8149514 | Zoom lens system, imaging device and camera A zoom lens system of the present invention has a plurality of lens units each composed of at least one lens element and, in order from the object side to the image side, comprises: a first lens unit having negative optical power and composed of two lens elements; a... | 04/03/2012 |
| 8130452 | Electronic image pickup apparatus An electronic image pickup apparatus comprising a zoom lens system and an image pickup device disposed on an image side of the zoom lens system and which converts an image formed by the zoom lens system into an electric signal, the zoom lens system having, in order ... | 03/06/2012 |
| 8085474 | Zoom lens A zoom lens includes, sequentially from an object side, a first lens group having a negative refractive power; and a second lens group having a positive refractive power, where focal length is varied by changing a distance between the first lens group and the second... | 12/27/2011 |
| 8085475 | Zoom lens system, interchangeable lens apparatus and camera system Provided is a zoom lens system including a compact focusing lens unit and having a suppressed change in image magnification at the time of movement of the focusing lens unit. A zoom lens system of the present invention, in order from an object side to an image side,... | 12/27/2011 |
| 8081391 | Zoom lens for projection and projection-type display apparatus A zoom lens for projection includes a negative first group composed of two lenses, a second group composed of a positive lens, an aperture stop, a third group composed of a positive lens, a fourth group composed of a negative fourth-group-first lens, a fourth-group-... | 12/20/2011 |
| 8064143 | Variable power optical system and imaging device A variable power optical system is provided and includes: in order from the object side, a first lens group having a negative refractive power and including a negative lens group and a positive lens group; a stop; and a second lens group having a positive refractive... | 11/22/2011 |
| 8045275 | Zoom lens and image pickup device having the same A compact wide-angle zoom lens and an image pickup device having the same. The zoom lens includes a first lens group having a negative refractive power and a second lens group having a positive refractive power in an order from an object side to an image side, perfo... | 10/25/2011 |
| 8045274 | Zoom lens and image pickup apparatus using the same A zoom lens includes 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 refractive power in order from the object side to the image side. The first lens unit includes a negat... | 10/25/2011 |
| 8040613 | Zoom lens, optical apparatus, and method for forming an image of an object In a zoom lens ZL1 having a plurality of lens groups G1 to G2 which are disposed in order from an object, where a refractive index average value of the lens components which constitute the zoom lens ZL1 is defined as ndav and a refractive... | 10/18/2011 |
| 8000023 | Zoom lens A zoom lens including a first lens group and a second lens group arranged in sequence from a magnified side toward a reduced side is provided. The first lens group has a negative refractive power and includes a first lens, a second lens, a third lens, and a fourth l... | 08/16/2011 |
| 7911707 | Zoom lens and image pickup apparatus having the same A zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, a third lens unit having a negative refractive power, and a fourth lens unit having a po... | 03/22/2011 |
| 7869135 | Zoom lens and image pickup apparatus having the same A zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power and a second lens unit having a positive refractive power. In the zoom lens, an interval between the first and second lens units becomes smaller... | 01/11/2011 |
| 7869134 | Variable power optical system, imaging lens system and digital apparatus Provided is a microminiaturized zoom optical system capable of sufficiently correcting aberration. The zoom optical system (100) includes a first lens group (101) having a negative optical power, a second lens group (102) having a positive optic... | 01/11/2011 |
| 7821722 | Wide-angle projection lens and projection apparatus using the same A wide-angle projection lens and a projection apparatus using the same are provided. The wide-angle projection lens, from an image side of the projection apparatus, includes a first lens group, a second lens group and a third lens group. An aperture stop of the wide... | 10/26/2010 |
| 7782542 | Zoom lens and electronic imaging device having the same A zoom lens includes a most object-side lens unit remaining fixed on the optical axis when the magnification of the zoom lens is changed and a focusing operation is performed; a most image-side lens unit remaining fixed when the focusing operation is performed; and ... | 08/24/2010 |
| 7773308 | Wide-angle zoom lens The present invention is directed to a wide-angle zoom lens that attains the field of view ranging from 80 to 115 degrees in field angle with the zooming power of 2× or even higher, and that is capable of approximately compensating for various types of aberration s... | 08/10/2010 |
| 7760439 | Variable power optical system, imaging lens device and digital apparatus There is provided a zoom optical system having lens elements produced with less difficulty i.e. with substantially the same skill level as the conventional arrangement, with sufficient miniaturization. The zoom optical system includes a first lens group having a neg... | 07/20/2010 |
| 7755843 | Zoom lens and image projection apparatus having the same A zoom lens includes a first lens unit having a negative optical power located closest to an enlargement side. In the zoom lens, a focal length of the zoom lens at a wide-angle end (fw) and a focal length of the first lens unit (f1) satisfy the following cond... | 07/13/2010 |
| 7729058 | Zoom lens system and electronic image pickup apparatus using the same A zoom lens system includes, in order from an object side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit having a positive refractive power. During zooming from a wide-angle end to ... | 06/01/2010 |
| 7724447 | Zoom lens system and imaging optical device employing the same The present zoom lens system comprises a plurality of lens units including at least: a front lens unit having negative optical power; and a rear lens unit having positive optical power, arranged on the image side of the front lens unit, and composed of a plurality o... | 05/25/2010 |
| 7715110 | Zoom lens system A zoom lens system consists, in order from an object side to an image-forming side, of a first negative lens group G1, a second positive lens group G2, and a third positive lens group G3. The first lens group G1 consists of one negative l... | 05/11/2010 |
| 7706079 | Projection zoom lens system and projection type display apparatus A projection lens system includes, in order from the magnification side, a negative first group G1 and positive second to fifth groups G2 to G5. In the lens system, the first group G1 has aspheric surface, a lens closest t... | 04/27/2010 |
| 7675688 | Zoom lens system, optical device with zoom lens system, and method of manufacturing zoom lens system A zoom lens system comprising, in order from an object along an optical axis: a first lens group having a negative refractive power; a second lens group having a positive refractive power; and a third lens group having a positive refractive power; the following cond... | 03/09/2010 |
| 7667898 | Zoom lens and projector A zoom lens includes a first lens group having negative power, a second lens group having positive power, a third lens group having positive power, and a fourth lens group having positive power, disposed in this order from the enlargement side to form the entire str... | 02/23/2010 |
| 7643220 | Zoom lens A zoom lens including a first lens group with a negative refractive power and a second lens group with a positive refractive power is provided. The first lens group includes a first lens, a second lens, and a third lens arranged from an object side to an image side ... | 01/05/2010 |
| 7623297 | Zoom lens A zoom lens includes, in order from an object side, a first lens group fixed upon zooming and wholly having a negative refractive power, a second lens group formed by an optical-path bending prism fixed upon zooming and, a third lens group allowed to move upon zoomi... | 11/24/2009 |
| 7605985 | Projection zoom lens and projection type display device A projection zoom lens is provided and includes: in order from the magnification side, a negative first lens group performing focusing with being fixed during power-varying; a positive second lens group, a positive third lens group, a positive fourth lens group, a p... | 10/20/2009 |
| 7599122 | Microscope optical system and digital microscope having the same A microscope optical system includes, in order from an object side to an image side, a first lens group, a second lens group, a stop, a third lens group, a fourth lens group and a sensor. The first to fourth lens groups all have at least one lens element and at leas... | 10/06/2009 |
| 7593165 | Zoom lens and image sensing apparatus A zoom lens for forming an optical image of an object on a sensing surface of an image sensor at a variable magnification has first, second, third, fourth and fifth lens groups with positive-negative-positive-negative-positive zoom arrangement. Between the second le... | 09/22/2009 |
| 7586690 | Projection type zoom lens and projection type display apparatus Disposed in order from a magnification side are a negative first group which is fixed during zooming to effect focusing, second to fifth groups of positive refractive power which move with mutual relationship during magnification variation, and a fixed sixth group. ... | 09/08/2009 |
| 7580200 | Optical zoom lens An optical zoom lens includes, in this order from the object side to the image side thereof, a first lens group of negative refraction power, a second lens group of positive refraction power, and a third lens group of positive refraction power. The optical zoom lens... | 08/25/2009 |
| 7576923 | Zoom lens and image projection apparatus having the same A zoom lens comprises a plurality of lens units including a first lens unit disposed most adjacent to an enlargement side and having negative refractive power, wherein one or more lens units of the plurality of lens units are moved in the direction of the optical ax... | 08/18/2009 |
| 7545578 | Image projection optical system and image projection apparatus An image projection optical system introduces light from an image-forming element by a zoom lens via an optical element. The optical element satisfies Σ(Di×Ndi)/fw>4.0. The zoom lens includes, in order from a magnification side, first and second lens units, and le... | 06/09/2009 |
| 7529034 | Zoom lens and projector using zoom lens There is provided a compact zoom lens having a small lens aperture which an image from a light valve such as a DMD is projected on to a screen in an enlarged scale. There is provided a zoom lens comprising, in order from a magnifying side, a first lens group ... | 05/05/2009 |
| 7522347 | Zoom optical system and electronic imaging apparatus using the same A zoom optical system comprises a lens group 1 having one negative lens component and a lens group 2 wherein a distance on the optical axis between the lens group 1 and the lens group 2 is changed for magnification purpose. The negative l... | 04/21/2009 |
| 7515351 | Inverse telephoto with correction lenses An inverse telephoto with correction lenses comprises five lens elements with refractive power, from the object side to the image side: a first lens element with negative refractive power having a concave image-side surface; a second lens element with positive refra... | 04/07/2009 |
| 7508592 | Zoom lens system Providing a zoom lens system having higher optical performance, a wide, maximum angle of view of 80 degrees or more, a zoom ratio of about 2.7, and a fast aperture ratio with an f-number of about 2.8. The zoom lens system includes, in order from an object, a first l... | 03/24/2009 |
| 7505211 | Photographic wide angle zoom objective of the retrofocus type Photographic wide angle zoom objective of the retrofocus type having a group of negative refractive power (VG−) comprising four lens components (L1, L2, L3, L4) and being a front group when seen from the object side, and having a rear g... | 03/17/2009 |
| 7502172 | Zoom optical system and image taking apparatus using the same A zoom optical system comprising, in order from an object side: a first lens unit having a negative refractive power; a second lens unit having a positive refractive power; and a third lens unit having a positive refractive power, a space between the lens units bein... | 03/10/2009 |
