Patent application number | Description | Published |
20090052056 | OPTICAL ELEMENT MOLDING METHOD AND OPTICAL ELEMENT - A molding material is heated and pressed plural times when molded is an optical element having a radius of curvature smaller than a radius of a sphere having the same volume as the optical element. When such an optical element is molded, a closed space is formed between a molding material and a transfer surface of a mold in a state where the molding material is placed thereon. Thus, an appearance defect such as a recess is easily generated on the molded optical element. However, since the molding material is molded plural times, it is possible to place the molding materials on the transfer surfaces of the molds after a size of the closed space is adjusted so as not to generate the appearance defect prior to each heating/pressing process. Thereby, it is possible to suppress generation of an appearance defect in the molded optical element. | 02-26-2009 |
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 |
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 |
20110080646 | MOLDED LENS - A laser beam output from a semiconductor laser light source | 04-07-2011 |