Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 8184377 | Zoom lens and image pickup apparatus including the same A zoom lens includes, in order from an object-side to an image-plane-side: a positive first lens unit; a negative second lens unit; a stop; a positive third lens unit; a negative fourth lens unit; and a positive fifth lens unit, wherein: during zooming, the first le... | 05/22/2012 |
| 8179609 | Zoom lens and image pickup apparatus including the same Provided is a zoom lens including, in order from an object side to an image side: a positive first lens unit without moving for zooming; a negative second lens unit moving during zooming; a negative third lens unit moving during zooming; a positive fourth lens unit ... | 05/15/2012 |
| 8134783 | Zoom lens system and image pickup apparatus including the zoom lens system A zoom lens system, in which chromatic aberration, spherical aberration, and coma may be excellently corrected in a balanced manner so as to obtain excellent optical performance over an entire zoom range, includes, in order from an object side to an image side: a fi... | 03/13/2012 |
| 7940471 | Zoom lens, imaging apparatus and mobile phone A zoom lens includes a first lens group having a negative refractive power, a second lens group including a prism which has no refractive power and deflects an optical path, a third lens group that has a positive refractive power and is moved during zooming, a fourt... | 05/10/2011 |
| 7907350 | Zoom lens system, imaging apparatus, method for zooming, and method for vibration reduction Providing a high optical performance zoom lens system with realizing a high zoom ratio and compactness suitable for a highly integrated electronic imaging device. The system includes, in order from an object along an optical axis: a first group G1 having posi... | 03/15/2011 |
| 7864443 | Zoom lens, imaging apparatus, and personal data assistant A zoom lens includes a first optical system having a positive focal length, the first optical system, a second optical system having a negative focal length, a third optical system having a positive focal length, a fourth optical system having a negative focal lengt... | 01/04/2011 |
| 7859765 | Zoom lens and image pickup apparatus equipped with same An apparatus has a zoom lens and an image pickup element disposed on the image side of the zoom lens that converts an optical image formed by the zoom lens into an electrical signal. The zoom lens includes, in order from the object side to the image side, a negative... | 12/28/2010 |
| 7808719 | Zoom lens system, interchangeable lens apparatus and camera system A zoom lens system is provided that includes a compactly constructed focusing lens unit and that has a suppressed change in the image magnification at the time of movement of a focusing lens unit. The zoom lens system according to the present invention, in order fro... | 10/05/2010 |
| 7796344 | Zoom lens system, interchangeable lens apparatus and camera system A zoom lens system is provided that includes a compactly constructed focusing lens unit and that has a suppressed change in the image magnification at the time of movement of a focusing lens unit. The zoom lens system according to the present invention, in order fro... | 09/14/2010 |
| 7796345 | Zoom lens system A zoom lens system includes, in order from an object side to an image side, first to fifth lens group respectively having positive, negative, positive, positive, and positive refractive power. When zooming from a wide-angle end to a telephoto end, the first, third a... | 09/14/2010 |
| 7777967 | Zoom lens, camera device and personal digital assistant A zoom lens including, in order from an object side to an image side, a first group having a negative focal length, a second group having a positive focal length, a third group having a negative focal length, a fourth group having a positive focal length, and an ape... | 08/17/2010 |
| 7755844 | Zoom lens, optical apparatus equipped with the zoom lens and method for forming an image of an object and varying a focal length A zoom lens comprises the following lens groups in the order from an object side a first lens group having a positive refracting power; a second lens group having a negative refracting power; a third lens group having a positive refracting power; a fourth lens group... | 07/13/2010 |
| 7738184 | Zoom lens and imaging apparatus incorporating the same A zoom lens consists of, in order from its object side, a first lens group of negative refracting power, and a second lens group of positive refractive power. Zooming from a wide-angle end to a telephoto end is implemented by changing a distance between the respecti... | 06/15/2010 |
| 7715111 | Projection zoom lens system and projection type display apparatus The projection zoom lens system includes a negative first lens group, a positive second lens group, a third lens group, a positive fourth lens group, a fifth lens group, and a positive sixth lens group. The lens system is nearly telecentric on a reduction side. Duri... | 05/11/2010 |
| 7692870 | Zoom lens and imaging apparatus A zoom lens and an imaging apparatus are disclosed. The zoom lens includes, in order from an object side to an image-plane side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having ... | 04/06/2010 |
| 7646547 | Three-unit zoom lens and image pickup apparatus equipped with same A three-unit zoom lens includes, in order from the object side, a negative first lens unit G1, a positive second lens unit G2 and a third lens unit G3, wherein during zooming from the wide angle end to the telephoto end the distance between the ... | 01/12/2010 |
| 7623299 | Zoom lens and imaging apparatus A zoom lens is provided, which includes a first lens group Gr1 having positive refractive power, a second lens group Gr2 having negative refractive power, which is movable in an optical axis direction mainly for zooming (varying power), a third lens gr... | 11/24/2009 |
| 7593168 | Zoom lens and imaging apparatus using the same The present invention relates to a low-cost zoom lens which has high optical performance specifications such as a wide angle of view and a high zoom ratio of as high as 5, is extremely small in depth and ensures that the optical path of the optical system can easily... | 09/22/2009 |
| 7558003 | Zoom lens and imaging apparatus An electrode for an extra-high pressure discharge lamp, comprises large diameter portion which is symmetrical with respect to an axis of the electrode, a small diameter portion connected to the large diameter portion, wherein the large diameter portion is connected ... | 07/07/2009 |
| 7518805 | Zoom lens system A zoom lens system that has five lens groups with respectively positive, negative, positive, positive, and positive refractive powers in that order from an object side to an image forming side is provided. The third lens group consists, in order from the object side... | 04/14/2009 |
| 7508593 | Bent type zoom optical system, and imager, information processor and electronic camera apparatus incorporating the same The invention relates to a bent type zoom optical system comprising a positive first lens group having a reflecting member and remaining fixed upon zooming and a second lens group adapted to move upon zooming, and having a high zoom ratio and a short entire-length, ... | 03/24/2009 |
| 7505213 | Zoom lens and image pickup apparatus A focusing group G1 is disposed on an object side relative to a variator group G2. The focusing group G1 includes, in order from the object side, a first group G11 having a positive refractive power, a second group G12 having a pos... | 03/17/2009 |
| 7499224 | Bent type zoom optical system, and imager, information processor and electronic camera apparatus incorporating the same The invention relates to a bent type zoom optical system that is reduced in terms of the whole size and thickness albeit including two reflecting surfaces in an optical path and having a high zoom ratio, and an apparatus incorporating the same. The zoom optical syst... | 03/03/2009 |
| 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 |
| 7433132 | Zoom lens system and electronic image pickup apparatus using the same A four-unit zoom lens system includes in order from an object side, a first lens unit having a positive refracting power, a second lens unit having a negative refracting power, a third lens unit having a positive refracting power, and a fourth lens unit having a pos... | 10/07/2008 |
| 7430079 | Zoom lens and imaging system using the same The invention relates to a high-performance, high-zoom-ratio zoom lens that can be much more reduced in terms of thickness upon received at a collapsible lens mount, and an imaging system incorporating the same. The zoom lens comprises a positive first lens group G | 09/30/2008 |
| 7428107 | Zoom lens and image pickup apparatus having the same A zoom lens includes first to fifth lens units arranged in sequence from an object side to an image side, and having positive, negative, positive, negative, and positive refractive powers in that order. The zoom lens performs zooming by moving the first to fifth len... | 09/23/2008 |
| 7423812 | Zoom lens and projector employing zoom lens In a thin projector for projecting an image from a light valve such as a DMD, a compact zoom lens comprises, in order, 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... | 09/09/2008 |
| 7418200 | Optical unit and imaging device A collapsible type optical unit is described that is capable of moving its optical system between a working position and a retracted position as well as an image-pickup apparatus including the optical unit. The optical unit and the image-pickup apparatus are capable... | 08/26/2008 |
| 7411740 | Zoom lens Disclosed is a zoom lens, which includes, in sequence from an object side to an image side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, a fifth lens group, a negative sixth lens group and a po... | 08/12/2008 |
| 7411741 | Zoom lens system including reflective surface which reflects optical path and image pickup apparatus including the system There is disclosed a zoom lens system including, in order from an object side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power and a fourth lens unit ha... | 08/12/2008 |
| 7408719 | Telephoto lens, telephoto lens system, and imaging system incorporating the same The invention relates to a telephoto lens that can easily have high resolving power best suited for use with digital cameras and maintain the integrity of performance even at the nearest distance and a telephoto lens system that incorporates the same and is best sui... | 08/05/2008 |
| 7403340 | Zoom optical system and electronic imaging apparatus using the same A zoom optical system has, in order from the object side, a first lens unit with negative refracting power, including a single lens component; a second lens unit with positive refracting power, simply moved toward the object side when the magnification of the zoom o... | 07/22/2008 |
| 7400458 | Imaging optics with wavelength dependent aperture stop An imaging system includes a wavelength dependent aperture stop, which transmits light with different ranges of wavelengths through apertures of different diameters. Thus, different colored light will have different F-stops, which can be selected based on the power ... | 07/15/2008 |
| 7397610 | Zoom lens and image projection apparatus having the same A zoom lens of the invention has three lens groups. In the zoom lens, magnification change is performed by moving only one lens group among the three lens groups, and focus adjustments is performed by moving one of a first lens group and a second lens group counted ... | 07/08/2008 |
| 7390098 | Projection lens, and projection display apparatus and rear projection display apparatus using the projection lens A projection lens that, though designed for right projection, shows good aberration performance and can realize specifications required for a projection display apparatus, such as a low F number, a wide angle, a long back focus, and a high relative illumination, wit... | 06/24/2008 |
| 7385766 | Variable focal length lens system and image capturing apparatus A variable focal length lens system includes first to fourth lens groups having positive, negative, positive, and positive powers, respectively, and a fifth lens group arranged in this order from an object side. When a lens zoom position is changed from a wide-angle... | 06/10/2008 |
| 7379249 | Downsize, high performance, and wide range magnification zoom lens and camera apparatus A zoom lens includes a first lens band having a positive focal length, a second lens band having a negative focal length, and at least third to fifth lens bands having positive focal lengths. An aperture diaphragm is located in the vicinity of the third lens band. W... | 05/27/2008 |
| 7365910 | Electronic image pickup system The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement of a zooming movable lens group while high specifications and perfo... | 04/29/2008 |
| 7365911 | Zoom lens and image pickup apparatus A zoom lens including a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, a fourth lens group having a positive refractive power and a fifth lens group ... | 04/29/2008 |
