Patent application number | Description | Published |
20090103154 | RECORDING APPARATUS AND INFORMATION PROCESSING APPARATUS EQIUPPED WITH THE SAME - A recording apparatus includes a first light source irradiating first laser light, a second light source irradiating second laser light, an optical spatial modulating unit applying information to the first laser light, and an objective lens collecting the first laser light and the second laser light at different positions on the same optical axis. A hologram recording operation uses a first optical path and a second optical path. The information light is conducted to the objective lens along the first optical path. The reference light is conducted to the objective lens along the second optical path. At the same time, an address/servo control operation is carried out by employing a third optical path along which the second laser light is conducted to the objective lens. The DVD recording operation uses the second optical path. The CD recording operation uses the third optical path. | 04-23-2009 |
20100054107 | RECORDING AND REPRODUCING APPARATUS - The recording and reproducing apparatus has rotary drive unit (a motor) that rotationally drives a multilayer recordable recording medium | 03-04-2010 |
20100097916 | Optical Disk, Recording/Reproducing Method Thereof, and Optical Disk Apparatus with Employment of Optical Disk - Then, in order to achieve the above-described object, in the optical disk of the present invention, while micro-hologram layers | 04-22-2010 |
20100232283 | OPTICAL PICKUP DEVICE AND OPTICAL DISK APPARATUS - An optical pickup device includes a first laser element that emits first laser light, a second laser element that emits second laser light of which the wavelength is longer than that of the first laser light, an optical path composition element that composes the first laser light and the second laser light to one optical path, a wavelength selective element that acts on the composed first or second laser light; and an objective lens that condenses the first laser light and the second laser light on an optical disk. The magnitude of the power of the wavelength selective element as a lens with respect to the second laser light is larger than the magnitude of the power of the wavelength selective element as a lens with respect to the first laser light. Accordingly, it may be possible to reduce the optical pickup device and the optical disk apparatus in size. | 09-16-2010 |
20110044151 | ELECTRONIC DEVICE - An electronic device that performs at least reading or regeneration of data in or from a hologram disc is characterized by including an objective lens | 02-24-2011 |