Patent application number | Description | Published |
20080266672 | Zoom lens, and electronics imaging system using the same - A zoom lens with an easily bendable optical path has high optical specification performance such as a high zoom ratio, a wide-angle arrangement, a small F-number and reduced aberrations. It includes a first lens group G | 10-30-2008 |
20080291297 | Imaging system - The invention relates to an imaging system in which, while high image quality is maintained with the influence of diffraction minimized, the quantity of light is controlled, and which enables the length of the zoom lens to be cut down. The imaging system comprises a zoom lens comprising a plurality of lens groups G | 11-27-2008 |
20090015942 | 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 performance are kept. The electronic image pickup system comprises an optical path-bending zoom optical system comprising, in order from its object side, a 1-1st lens group G | 01-15-2009 |
20090097130 | 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 a plurality of moving lens units lying between the most object-side lens unit and the most image-side lens unit, moved along the optical axis when the magnification is changed. The most object-side lens unit includes, in order from the object side, a negative lens component, a reflective optical component having a reflecting surface for bending the optical path, and a positive lens component. The most image-side lens unit has at least one aspherical surface. An electronic imaging device includes an electronic image sensor located on the image side of the zoom lens. | 04-16-2009 |
20090195888 | Image Forming Optical System and Electronic Image Pickup Apparatus Using Image Forming Optical System - An image forming optical system according to the present invention is characterized in that, in an image forming optical system having a positive lens group, a negative lens group, and an aperture stop, the positive lens group is disposed at an object side of the aperture stop,
| 08-06-2009 |
20090279183 | Image Forming Optical System and Electronic Image Pickup Apparatus Using Image Forming Optical System - An image forming optical system according to the present invention is characterized in that, in an image forming optical system having a positive lens group, a negative lens group, and an aperture stop, the positive lens group is disposed at an image-plane side of the aperture stop,
| 11-12-2009 |
20090279184 | Image Forming Optical System and Electronic Image Pickup Apparatus Using Image Forming Optical System - In an image forming optical system having a positive lens group, a negative lens group, and an aperture stop, the negative lens group is disposed at an image side of the of the aperture stop,
| 11-12-2009 |
20090279185 | Image Forming Optical System and Electronic Image Pickup Apparatus Using Image Forming Optical System - An image forming optical system according to the present invention is characterized in that, in an image forming optical system having a positive lens group, a negative lens group, and an aperture stop, the negative lens group is disposed at an object side of the aperture stop,
| 11-12-2009 |
20100188553 | Image forming optical system and electronic image pickup apparatus using the same - It is preferable that for an image forming optical system a basic structure which includes a first lens group having a negative refracting power, which is made of one cemented lens component, a second lens group having a positive refracting power, a third lens group having a positive refracting power, which is made of one lens component, and is movable for focusing, and a fourth lens group which is made of one lens component having an aspheric surface, and at the time of zooming from a wide angle end to a telephoto end, the second lens group moves only toward the object side, and the first lens group and the third lens group move while following a trajectory of movement different from a trajectory of movement of the second lens group is adopted, and that the image forming optical system satisfies predetermined conditional expressions. | 07-29-2010 |
20110043664 | Image forming optical system and electronic image pickup apparatus equipped with same - An image forming optical system comprising, in order from the object side: a first lens group G | 02-24-2011 |
20110102639 | Image forming optical system and electronic image pickup apparatus equipped with same - A zoom optical system having a lens group I including two single lenses or one lens component, an aperture stop, and a lens group A disposed between the lens group I and the aperture stop, including a lens component made up of a positive lens LA and a negative lens LB that are cemented together, and having a negative refracting power as a whole. The distance between the lens group I and the lens group A on the optical axis changes for zooming, and the lens component has an aspheric cemented surface. When the shape of the aspheric surface is expressed by a certain equation, the shape of the air-contact surface of the positive lens LA and its aspheric components etc. satisfy conditional expressions (3a) and (3b). | 05-05-2011 |
20110102660 | Lens component, image forming optical system, and electronic image pickup apparatus using the same - A lens component of the present invention is made by cementing a lens LA and a lens LB having a refracting power smaller than a refracting power of the lens LA, and satisfies predetermined conditional expressions. Moreover, in an image forming optical system of the present invention which includes a lens group B having a negative refracting power, a lens group C having a positive refracting power and which moves only toward an object side at the time of zooming from a wide angle end to a telephoto end, and one or two more lens groups additionally, one of the lens components of the present invention is used in the lens group B. | 05-05-2011 |
20110134266 | Image forming optical system and electronic image pickup apparatus equipped with same - To provide an image forming optical system that can achieve good correction of chromatic aberration, which is seriously needed particularly when the zoom ratio is high, while achieving slimness and a high zoom ratio and to provide an electronic image pickup apparatus equipped with such an image forming optical system, an image forming optical system has a lens group A including a lens component made up of a positive lens LA and a negative lens LB cemented together and having a negative refracting power as a whole. The lens group A is arranged between a lens group I closest to the object side and an aperture stop. The distance between the lens group I and the lens group A changes for zooming. The lens component has an aspheric cemented surface, and a certain condition concerning the shape of the aspheric surface is satisfied. | 06-09-2011 |
20110181758 | Image forming optical system and electronic image pickup apparatus using the same - There is provided an image forming optical system in which, it is possible to achieve both, the small-sizing and slimming of an optical system, and a favorable correction of various aberrations, mainly the chromatic aberration. | 07-28-2011 |
20110267705 | Image forming optical system and electronic image pickup apparatus equipped with same - An image forming optical system has a positive lens group disposed closer to its object side than an aperture stop, and the values of θgF1 and other constants of at least one lens LA included in the positive lens group fall within three ranges including a range bounded by the straight lines given by the equation θgF1=α1×νd1+βgF1 (where α1=−0.00566) into which the lowest and highest values in the range given by a first conditional expression are substituted respectively, a range bounded by the straight lines given by the equation nd1=a1×νd1+b1 (where a1=−0.0267) into which the lowest and highest values in the range given by a second conditional expression are substituted respectively, and a range defined by a third conditional expression. | 11-03-2011 |
20110285896 | Image forming optical system and electronic image pickup apparatus using the same - In an image forming optical system which includes in order from an object side, a first lens group G | 11-24-2011 |
20110292252 | Image forming optical system and electronic image pickup apparatus using the same - In an image forming optical system which includes in order from an object side, a first lens group G | 12-01-2011 |
20120057068 | Image forming optical system and electronic image pickup apparatus equipped with same - An optical system includes, in order from its object side a negative first lens unit, a positive second lens unit, a negative third lens unit, and a positive fourth lens unit. The air gaps between the lens units are variable during zooming. The first lens unit includes one positive lens, the second lens unit includes one negative lens, the third lens unit consists of one or two lens components, and the fourth lens unit consists of one lens component, where the term “lens component” refers to a single lens or a cemented lens. The system satisfies the condition “003-08-2012 | |
20120092776 | 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 performance are kept. The electronic image pickup system comprises an optical path-bending zoom optical system comprising, in order from its object side, a 1-1st lens group G | 04-19-2012 |
20120314298 | ZOOM LENS AND IMAGE PICKUP APPARATUS USING THE SAME - A zoom lens includes 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 positive refractive power, a fourth lens group having a positive refractive, and a last lens group having a positive refractive index, and at the time of zooming from the wide angle end to the telephoto end, the first lens group is fixed, the second lens group moves toward a side of an image plane, the third lens group is fixed, and the fourth lens group moves, and at the time of focusing, the fourth lens group moves. The zoom lens satisfies the following conditional expression (101) | 12-13-2012 |
20130258130 | ZOOM LENS, IMAGE PICKUP APPARATUS USING THE SAME, IMAGE TRANSMISSION APPARATUS, AND IMAGE TRANSMISSION SYSTEM - A zoom lens includes 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 fourth lens group having a positive refractive power, a fifth lens group having a positive refractive power, and a last lens group having a positive refractive power. At the time of zooming from a wide angle end to a telephoto end, the second lens group and the third lens group move, and one of the fourth lens group, the fifth lens group, and the last lens group moves. | 10-03-2013 |