Patent application number | Description | Published |
20090067063 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens is provided and includes: in order from an object side of the imaging lens, a first lens group having a positive power as a whole; a second lens group, in which an object-side surface of a lens closest to the object side is concave toward the object side; a third lens group of a single lens having a positive power; and a fourth lens group having a negative power as a whole. | 03-12-2009 |
20090067065 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens is provided and includes: a stop; and a lens group disposed between the stop and an imaging plane of the imaging lens and having a positive power as a whole. The lens group has an air lens formed by an air gap between lenses adjacent to each other, and the imaging lens satisfies conditional expression (1): | 03-12-2009 |
20090190239 | LENS HAVING VIBRATION PROOF FUNCTION AND IMAGING APPARATUS - A telephoto lens having a vibration proof function is provided and includes: in order from an object side of the telephoto lens, a first lens group having a positive refractive power; a second lens group having a negative refractive power; and a third lens group having a positive refractive power. The second lens group is moved along an optical axis thereof to perform focusing. The third lens group includes a 3a-th group having a positive refractive power and a 3b-th group having a negative refractive power in the order from the object side. The 3a-th group is moved in a direction orthogonal to the optical axis to correct an image vibration of a taken image. The telephoto lens satisfies a specific conditional expression. | 07-30-2009 |
20100073776 | ZOOM LENS AND IMAGING APPARATUS - A zoom lens includes a first negative lens group, a second negative lens group, a third positive lens group, an aperture diaphragm, and a fourth positive lens group arranged in this order from an object side. When power varies from a wide angle end to a telephoto end, the first and second lens groups are moved to an image surface along an optical axis and then moved to the object side. The third and fourth lens groups are moved to only the object side along the optical axis. The first lens group includes at least one aspheric lens, and the aspheric lens has an aspheric shape in which a positive refractive power is increased toward the periphery of the lens when a paraxial refractive power is positive and a negative refractive power is decreased toward the periphery of the lens when the paraxial refractive power is negative. | 03-25-2010 |
20110019033 | ZOOM LENS AND IMAGING APPARATUS - Disclosed are a zoom lens and an imaging apparatus having a high zoom ratio, a small total length, and a small overall size. | 01-27-2011 |
20110304759 | IMAGE PICKUP LENS, IMAGE PICKUP APPARATUS, AND PORTABLE TERMINAL DEVICE - An image pickup lens includes a first lens having a positive meniscus shape convex toward an object side, a second lens disposed on an image side of the first lens and has a meniscus shape convex toward the image side, and an aperture stop disposed on the object side of the image side surface of the first lens, and satisfies conditional expressions given below, in which f is a focal length of the entire system, f1 is a focal length of the first lens, f2 is a focal length of the second lens, R5 is a paraxial radius of curvature of the object side surface of the second lens, and R6 is a paraxial radius of curvature of the image side surface of the second lens. | 12-15-2011 |
20120063011 | RETROFOCUS-TYPE WIDE ANGLE LENS AND CAMERA INCLUDING THE LENS - A retrofocus-type wide angle lens includes a first lens group having negative refractive power as a whole, a second lens group having positive refractive power as a whole, a stop, and a third lens group having positive refractive power as a whole, which are arranged in this order from the object side of the retrofocus-type wide angle lens. Further, the first lens group includes two negative meniscus lenses, each having a convex surface facing the object side. Further, each of the second lens group and the third lens group includes a three-element cemented lens. | 03-15-2012 |
20120069456 | SMALL-SIZE WIDE ANGLE LENS AND CAMERA INCLUDING THE LENS - A small-size wide angle lens substantially consists of a first lens group having positive refractive power, a stop, a second lens group having positive refractive power, and a third lens group having negative refractive power, which are arranged in this order from the object side. Each of the first lens group, the second lens group and the third lens group includes a negative lens and a positive lens. Further, at least one of the second lens group and the third lens group includes an aspheric surface. Further, the small-size wide angle lens satisfies predetermined formulas. | 03-22-2012 |