Matches 1 - 24 out of 24


Match Document Document Title
US20080013434 Optical-integrated unit and optical pickup device used for reading and/or writing information from / onto an optical record medium  
A lens-side grating diffracts, in a direction of an emitter-side grating, two laser beams passed through the lens-side grating from an optical disk side. The emitter-side grating substantially...
US20120075978 Objective Lens Element and Optical Pickup Device  
An objective lens element that can suppress occurrence of an aberration is disclosed. Sawtooth-like diffraction structures having different height and cycles (pitches) are provided on an inner...
US20050180295 Optical pickup apparatus and diffractive optical element for optical pickup apparatus  
An optical pickup apparatus, includes: first-third light sources emitting first-third light fluxes respectively; a diffractive optical and; an objective optical system having a light converging...
US20060083148 Planar light emitting device  
A planar light emitting device 1 has a light emitting layer 5 that is formed on a glass substrate 2 and that emits light when a voltage is applied thereto or a current is injected thereinto and a...
US20070070859 Optical elements and combiner optical systems and image-display units comprising same  
Light-propagating optical elements are disclosed that have an internal-reflection and a see-through feature not damaged even if a member higher in refractive index than the surrounding medium is...
US20080062850 Optical pickup and optical disc apparatus  
In an optical pickup compatible with BD and HD DVD, when DPP method is used as a tracking error signal detection system for both BD and HD DVD, since the guide groove pitch of the optical disc...
US20100097919 OPTICAL PICKUP APPARATUS  
Provided is an optical pickup apparatus that can be made compact and is capable of producing stable push-pull signals. The optical pickup apparatus includes a light source, an objective lens, a...
US20070064574 Semiconductor laser apparatus, optical pick-up and optical information apparatus  
A transmission diffraction grating body including a base material being substantially transparent with respect to wavelength λ1 and having a refractive index n0; another base material being...
US20120155241 OPTICAL PICKUP APPARATUS AND OBJECTIVE OPTICAL UNIT  
An optical pickup apparatus includes: a first light source for emitting a first light flux; a second light source for emitting a second light flux; a third light source for emitting a third light...
US20140219070 Optical Pickup and Optical Disk Unit  
An optical pickup includes a light source, a light splitting element generating signal light and position adjustment light by splitting return light from an optical disk and dispersing the return...
US20110085432 GRATING ELEMENT, OPTICAL PICKUP OPTICAL SYSTEM AND METHOD OF DESIGNING GRATING ELEMENT  
A grating element is provided with diffraction members wherein protrusions and recesses are periodically arranged, respectively, on one surface of each of transparent substrates. The diffraction...
US20090092030 Optical disk device  
Provided is an optical disk device to output a reproduction signal to reproduce an optical disk, including: a light output circuit to output light having a high frequency superimposed thereon; a...
US20080205244 Optical head, optical disc apparatus including the optical head, and information processing apparatus including the optical disc apparatus  
An optical head is used to irradiate a beam onto an optical recording medium having multiple recording positions in the thickness direction, and to receive a reflection beam reflected from the...
US20090097381 OPTICAL PICKUP AND OPTICAL INFORMATION PROCESSING APPARATUS  
A disclosed optical pickup for performing at least recording, reproduction, or deletion of information on a first, second, third, and fourth optical recording media having different recording...
US20110228664 OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS AND OBJECTIVE OPTICAL SYSTEM FOR THE SAME  
An objective optical system for information recording/reproducing, at least one of optical surfaces of the objective optical system comprising a diffraction surface including a first region...
US20120057445 OPTICAL PICKUP DEVICE AND OPTICAL DISC APPARATUS  
For obtaining stable servo-signals without receiving ill influences of stray lights from other layers, on both a focus error signal and a tracking error signal, when recording/reproducing a...
US20100226235 OPTICAL PICKUP DEVICE  
An optical pickup device radiates laser light to a disc having a plurality of recording layers in a direction of lamination. The optical pickup device includes a laser light source, a collimator...
US20100149951 INFORMATION RECORDING AND REPRODUCING DEVICE  
An information recording/reproducing device includes a light source separately projecting laser light for recording or reproducing, an optical system leading the projected laser light to a...
US20100142355 OPTICAL HEAD DEVICE AND OPTICAL INFORMATION RECORDING OR REPRODUCING DEVICE  
[Problems] To provide an optical head and an optical information recorder/reproducer in which a high signal/noise ratio can be attained for an RF signal. [Means of Solving Problems] Reflected...
US20100135144 OPTICAL PICKUP DEVICE AND LENS FOR OPTICAL PICKUP  
An optical pickup device according to the present invention comprises: a first mirror for reflecting a first light beam outputted from a first light source and letting a second light beam...
US20140313874 OPTICAL HEAD DEVICE AND OPTICAL DISC DEVICE  
An optical component, a hologram, and a photodetector are configured in an optical head device of an optical disc device such that a +1-order beam or a −1-order beam of diffracted light generated...
US20130094338 OPTICAL PICKUP AND OPTICAL READ/WRITE APPARATUS  
An optical pickup includes: a light source; a first diffractive element which diffracts light polarized in a particular direction; an objective lens; a lens actuator which shifts the objective...
US20130083641 OPTICAL PICKUP DEVICE AND OPTICAL READ/WRITE APPARATUS  
In one embodiment, the optical pickup device includes: a light source that emits a light beam; a diffractive element that diffracts the light beam and generates a zero-order and ±first-order...
US20110205879 OPTICAL PICK-UP DEVICE AND METHOD FOR MANUFACTURING THE SAME  
Provided are an optical pick-up device which can appropriately correct an optical path of a laser beam emitted from a light-emitting chip arranged with a mounting error, and a method of...

Matches 1 - 24 out of 24