Patent application number | Description | Published |
20090002850 | COLOR IMAGE READOUT LENS AND COLOR IMAGE READOUT APPARATUS - A color image readout lens comprises, in order from an object side: a first group comprising a positive lens convex toward the object side and a biconcave negative lens; a stop; a second group comprising one diffractive optical element that has at least one flat surface and has a diffractive structure formed on the flat surface; and a third group comprising a biconvex positive lens and a negative lens concave toward the object side. | 01-01-2009 |
20090129241 | OBJECTIVE LENS, OPTICAL PICKUP DEVICE HAVING THE SAME, AND RECORDING AND/OR REPRODUCING APPARATUS FOR OPTICAL RECORDING MEDIUM, EQUIPPED WITH THE OPTICAL PICKUP DEVICE - An objective lens consists of a single lens element, and has a light source side surface formed into a convex surface having a large curvature and an optical recording medium side surface has a small curvature. The both surfaces are aspheric surfaces. Also, the objective lens satisfies the following expressions (1) to (3): | 05-21-2009 |
20090129242 | OBJECTIVE LENS, OPTICAL PICKUP DEVICE HAVING THE SAME, AND RECORDING AND/OR REPRODUCING APPARATUS FOR OPTICAL RECORDING MEDIUM, EQUIPPED WITH THE OPTICAL PICKUP DEVICE - An objective lens | 05-21-2009 |
20090129243 | OBJECTIVE LENS, OPTICAL PICKUP DEVICE HAVING THE SAME, AND RECORDING AND/OR REPRODUCING APPARATUS FOR OPTICAL RECORDING MEDIUM, EQUIPPED WITH THE OPTICAL PICKUP DEVICE - An objective lens consists of a single lens element. A light source side surface is formed into a convex surface having a large curvature, and an optical recording medium side surface has a small curvature. The both surfaces are formed into aspheric surfaces. Also, the objective lens satisfies the following expressions (1) to (3): | 05-21-2009 |
20090161236 | IMAGING LENS SYSTEM AND IMAGING APPARATUS - The imaging lens system includes a negative first lens disposed on a most object side, having a concave surface directed toward the object side and having a meniscus shape, a cemented lens LC disposed on a most image side and having a convex surface on its most object side, and an aperture diaphragm disposed just in front of the object side of the cemented lens. The system satisfies the following conditional expressions: | 06-25-2009 |
20090285078 | OBJECTIVE LENS, OPTICAL PICKUP DEVICE, AND OPTICAL RECORDING/REPRODUCING APPARATUS - An objective lens for converging light emitted from a light source onto an optical recording medium to record and reproduce information consists of a single lens that has at least one aspheric surface. The following conditional expressions (1) and (2) are satisfied: | 11-19-2009 |
20090285079 | OBJECTIVE LENS, OPTICAL PICKUP DEVICE, AND OPTICAL RECORDING/REPRODUCING APPARATUS - An objective lens for converging light emitted from a light source on an optical recording medium to record and reproduce information consists of a single lens having at least one aspheric surface. The following conditional expressions ( | 11-19-2009 |
20090296227 | MOLDED LENS - A laser beam output from a semiconductor laser light source | 12-03-2009 |
20100103537 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens includes, in order from an object side, a first lens having a negative power and including a concave image-side surface, a second lens having a positive power, a stop, a third negative lens, which is a biconcave lens, a fourth lens having a positive power, and a fifth lens having a positive power and including a convex image-side surface. The imaging lens satisfies the following conditional expressions: | 04-29-2010 |
20100103538 | IMAGING LENS AND IMAGING APPARATUS USING IMAGING LENS - An imaging lens includes, in order from an object side, a positive first lens group, a stop, and a positive second lens group. The first lens group includes, in order from the object side, a first lens, which is a negative meniscus lens having a convex object-side surface, and a second lens having a positive power and including a convex image-side surface. The second lens group includes, in order from the object side, a third lens having a negative power and including a concave object-side surface, a fourth lens having a positive power and including a convex image-side surface, a fifth lens, which is a biconvex lens, and a sixth lens, which is a meniscus lens having a negative power and including a convex surface facing an image side. Each of the first to sixth lenses is a single spherical glass lens. | 04-29-2010 |
20100103539 | IMAGING LENS AND IMAGING APPARATUS USING IMAGING LENS - An imaging lens includes, in order from an object side, a first lens group having a positive power, an aperture diaphragm, and a second lens group having a positive or negative power. The first lens group includes, in order from the object side, a first lens which is a biconcave lens, a second lens that has a positive power and includes a convex image-side surface, and a third lens that has a positive power and includes a convex object-side surface. The second lens group includes, in order from the object side, a fourth lens that has a negative power and includes a concave image-side surface, and a fifth lens which is a biconvex lens. Each of the first to fifth lenses is a single spherical glass lens. | 04-29-2010 |
20100302431 | IMAGING LENS AND IMAGE PICKUP APPARATUS - Disclosed is an imaging lens capable of improving weatherability, reducing performance degradation, and obtaining an optical performance excellent across a wide wavelength region from the visible wavelength region to the near-infrared wavelength region. An imaging lens for forming an image of visible and near-infrared light includes, in order from the object side: a front group that has a positive power; an aperture stop; and a rear group that has a negative power. In the imaging lens, the rear group includes a negative meniscus lens that is disposed closer to the object side and has a surface convex toward the object side, and a biconvex lens that is disposed closer to the image side. In addition, all the lenses constituting the imaging lens are single lenses. | 12-02-2010 |
20110080646 | MOLDED LENS - A laser beam output from a semiconductor laser light source | 04-07-2011 |
20110299178 | IMAGE PICKUP LENS AND IMAGE PICKUP APPARATUS - An image pickup lens having a four lens configuration in which a bi-concave first lens, a bi-convex second lens, a bi-concave third lens, and a positive fourth lens are disposed in this order from an object side. Here, at least one of the first, second, third, and fourth lenses has an aspherical surface on each side. The image pickup lens satisfies Conditional Expression (1) given below when a refractive index of the second lens with respect to d-line is taken as Nd | 12-08-2011 |