Patent application number | Description | Published |
20130194488 | IMAGE-FORMING LENS, AND CAMERA DEVICE AND PORTABLE INFORMATION TERMINAL DEVICE WITH THE IMAGE-FORMING LENS - An image forming lens consists of from an object side to an image side in the following order: a first group with a positive refractive power; an aperture stop; and a second group with a positive refractive power, wherein the second group includes, from the object side to the image side in the following order, a biconvex lens, a biconcave lens, a negative meniscus lens a convex surface of which faces the image side, a biconvex lens, and a positive meniscus lens a convex surface of which faces the image side. | 08-01-2013 |
20130194681 | IMAGE-FORMING LENS, AND IMAGING APPARATUS AND INFORMATION DEVICE USING THE IMAGE-FORMING LENS - An image-forming lens consists of: from an object side to an image side in the following order, a first lens group with a positive refractive power; an aperture stop; and a second lens group with a positive refractive power, and the second lens group includes: from the object side to the image side in the following order, a second F lens group with a positive refractive power in which a biconvex lens and a biconcave lens are cemented to each other; a second M lens group having a concave shape on a surface on a most object side and a convex shape on a surface on a most image side; and a second R lens group of a positive lens. | 08-01-2013 |
20130308105 | PROJECTION ZOOM LENS AND PROJECTOR - A projection zoom lens constituting a projection optical system of a projector, which projects an image displayed on a surface of an image display element on a projected surface, so as to magnify and display the image includes, in order from the projected surface side to the image display element side, a first lens group having a negative 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, wherein a refractive power of the fifth lens group is weaker than the refractive power of the first lens group, the refractive power of the second lens group, the refractive power of the third lens group, and the refractive power of the fourth lens group. | 11-21-2013 |
20140016214 | IMAGE-FORMING LENS, AND CAMERA DEVICE AND PORTABLE INFORMATION TERMINAL DEVICE WITH THE IMAGE-FORMING LENS - An image forming lens consists of from an object side to an image side in the following order: a first group with a positive refractive power; an aperture stop; and a second group with a positive refractive power, wherein the second group includes, from the object side to the image side in the following order, a biconvex lens, a biconcave lens, a negative meniscus lens a convex surface of which faces the image side, a biconvex lens, and a positive meniscus lens a convex surface of which faces the image side. | 01-16-2014 |
20140063612 | PROJECTOR ZOOM LENS AND PROJECTOR - A projector zoom lens includes a first lens group having a negative refractive power and a second lens group having a positive refractive power. The first lens group includes a first front group having a negative refractive power and a first rear group having a positive refractive power, including a positive meniscus lens with a convex surface on an enlargement side. The second lens group includes a second front group having a positive refractive power, including two continuously arranged positive lenses made from a same glass material and having a same surface profile and a second rear group having a negative refractive power, including a biconcave lens and a biconvex lens, the lenses of the first and second lens groups being arranged in order from an enlargement side to a reduction side. | 03-06-2014 |
20140126072 | IMAGE-FORMING LENS, AND IMAGING APPARATUS AND INFORMATION DEVICE USING THE IMAGE-FORMING LENS - An image-forming lens includes, from an object side to an image side in order: a first lens group; an aperture; and a second lens group with a positive refractive power, the first lens group including, from the object side in order: a first F lens group with a negative refractive power; and a first R lens group with a positive refractive power, the first F lens group including, from the object side in order: a first negative lens; and a second negative lens, and the first R lens group including: any one of a positive lens and a cemented lens with a positive refractive power as a whole, wherein a distance from a surface on a most object side of the first lens group to an image plane in a state of focusing on an object at infinity: L, and a maximum image height: Y′ satisfy Conditional expression 1: 2.805-08-2014 | |
20140139931 | IMAGING LENS, IMAGING DEVICE AND INFORMATION DEVICE - An imaging lens including seven or fewer lenses which constitute an entire system of an optical system comprising, in order from an object side to an imaging side: a first lens group having a positive refractive power; a second lens group having a positive refractive power; and a third lens group having a negative refractive power, wherein the first lens group includes a lens having a negative refractive power and a lens having a positive refractive power, an aperture stop being disposed in the first lens group, the second lens group includes one lens having a negative refractive power and one lens having a positive refractive power, and the third lens group including one lens having a negative refractive power and a concave surface on the object side. | 05-22-2014 |
20140185143 | PROJECTION ZOOM LENS - Disclosed is a projection zoom lens used in an image display device configured to project an image onto a target projection surface and display a magnified image of the image, in which the projection zoom lens has a five-lens-group configuration in which first to fifth lens groups G | 07-03-2014 |
20140185144 | IMAGE DISPLAY DEVICE - An image display device includes a high-performance projection zoom lens with a very wide field angle and an image display device including a projection zoom lens of a five-lens-group type, which achieves high performance across the entire zoom area. The image display device is configured to project an image onto a target projection surface and display a magnified image of the image, which uses a projection zoom lens having a five-lens-group configuration in which first to fifth lens groups G | 07-03-2014 |
20140340768 | IMAGE-FORMING LENS, AND CAMERA DEVICE AND PORTABLE INFORMATION TERMINAL DEVICE WITH THE IMAGE-FORMING LENS - An image forming lens consists of from an object side to an image side in the following order: a first group with a positive refractive power; an aperture stop; and a second group with a positive refractive power, wherein the second group includes, from the object side to the image side in the following order, a biconvex lens, a biconcave lens, a negative meniscus lens a convex surface of which faces the image side, a biconvex lens, and a positive meniscus lens a convex surface of which faces the image side. | 11-20-2014 |