Matches 1 - 31 out of 31
Match Document Document Title
7372794 Compatible optical pickup applying tilt to objective lens in proportion to radial movement of objective lens  
A compatible optical pickup compatibly using a high density recording medium and at least one low density recording medium, includes an objective lens to form a light spot suitable for use on a...
7283452 Objective lens having two aspheric surfaces and a phase shifter and optical device including the same  
An objective lens in which a first wavelength is used in reading a first optical disk, a second wavelength is used in recording or reading a second optical disk, and a phase shifter provided with...
7079471 OPTICAL PICKUP USING TWO LASER BEAM SOURCES OF DIFFERENT WAVELENGTHS FOR AN OPTICAL DISK DRIVE AND A CONVERTER TO OPTIMIZE A LIGHT BEAM REFLECTED OFF AN OPTICAL DISC FOR DETECTION BASED ON REFLECTED LIGHT BEAM WAVELENGTH  
First and second laser beam sources generate first and second laser beams of different wavelengths, respectively. A first collimating lens diverges the first laser beam at a predetermined angle so...
7072114 Optical pickup using an optical phase plate and which is compatible with optical recording media of different types  
An optical pickup apparatus having laser light sources emit a first light beam having a relatively shorter wavelength for a DVD and a second light beam having a longer wavelength for a CD-R, an...
7046611 Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens  
An optical pickup apparatus compatible with at least two types of optical recording media, using light beams having respective different wavelengths for recording and reading information, the...
6985293 Optical pickup using an optical phase plate and which is compatible with optical media for different types  
An optical pickup apparatus having laser light sources emit a first light beam having a relatively shorter wavelength for a DVD and a second light beam having a longer wavelength for a CD-R, an...
6882614 Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses  
A recording/reproducing apparatus having an optical pickup device which is efficient in light use having little spherical aberration. The recording and/or reproducing apparatus includes an optical...
6816449 Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens  
An optical pickup apparatus compatible with at least two types of optical recording media, using light beams having respective different wavelengths for recording and reading information, the...
6791933 Optical pickup using an optical phase plate  
An optical pickup apparatus having compatibility with a recodable compact disk (CD-R) and a digital video disk (DVD), which uses a wavelength of one of a first light beam and a second light beam...
6788636 Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens  
An optical pickup apparatus compatible with at least two types of optical recording media, using light beams having respective different wavelengths for recording and reading information, the...
6760295 Optical pick-up  
An optical pick-up includes light sources for emitting light beams having different wavelength, the light sources being switched according to the kind of optical discs, a refractive lens element...
6639889 Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats  
A recording/reproducing apparatus including an optical pickup compatible with a plurality of optical recording media each using light of a different wavelength. The optical pickup includes at least...
6570827 OPTICAL ELEMENT FOR CORRECTION OF CHROMATIC ABERRATION, OPTICAL PICK-UP DEVICE HAVING OPTICAL ELEMENT FOR CORRECTION OF CHROMATIC ABERRATION, OPTICAL REPRODUCING DEVICE HAVING OPTICAL PICK-UP DEVICE AND OPTICAL RECORDING AND REPRODUCING DEVICE  
This invention provides an optical element for correcting a chromatic aberration corresponding to a short wavelength of a light source and further provides an optical pick-up device having the...
6392979 Optical pickup and optical disk apparatus using the same  
Laser light emitted from the wavelength-locked GaN semiconductor laser is collimated through a collimation lens, led through a polarization beam splitter and a ¼ wavelength plate, and converged by...
EP0855701B1 Optical pickup compatible with recordable compact disk and digital video disk using plane parallel plates  
Abstract of EP0855701 An optical pickup is compatible with at least two types of optical recording media which use light beams having different wavelengths for recording and reproduction of...
6275461 Optical pickup using an optical phase plate  
A recording/reproducing apparatus includes an optical pickup device having an optical phase plate which is compatible with optical recording mediums having different thicknesses, and an optical...
6272096 Optical pickup using an optical phase plate  
An optical pickup apparatus having compatibility with a recodable compact disk (CD-R) and a digital video disk (DVD), which uses a wavelength of one of a first light beam and a second light beam...
6222812 Optical pickup using an optical phase plate  
An optical pickup apparatus having compatibility with a recodable compact disk (CD-R) and a digital video disk (DVD), which uses a wavelength of one of a first light beam and a second light beam...
6219169 Beam shape compensation optical system  
A beam shape compensation optical system includes a first anamorphic beam expander which expands a cross section of a parallel beam incident along a predetermined direction at a first magnification...
6147955 Optical pickup device to read from and record information to disks of different thicknesses  
An optical pickup device which is efficient in light use having little spherical aberration. The optical pickup device of an optical pickup includes an objective lens, disposed opposite a disk,...
6081498 Optical pickup compatible with recordable compact disk and digital video disk using plane parallel plates  
An optical pickup is compatible with at least two types of optical recording media each using light beams having different wavelengths from one another and which are used for recording and...
6067283 Optical pickup  
An optical pickup is provided for reproducing information recorded on optical recording mediums including a first recording medium having a predetermined first distance from a surface of the medium...
EP0828244B1 Optical pickup using an optical phase plate  
Abstract of EP0828244 An optical pickup apparatus having compatibility with a recordable compact disk (CD-R) and a digital video disk (DVD) uses one of a first light (31) and a second light (40)...
5978344 Method of manufacturing integrated optical pick-up  
In an optical pickup, light, emitted from a light-emitting element, is transmitted through a first beam splitter film with polarization selectivity, and a zero-order diffraction beam and two (±)...
5909424 Optical pickup device and method to read from and record information to disks of different thicknesses  
An optical pickup device which is efficient in light use having little spherical aberration. The optical pickup device of an optical pickup includes an objective lens, disposed opposite a disk,...
5802035 Optical pickup apparatus compatible with disks of various formats  
An optical pickup apparatus compatible with disks having different thicknesses is provided. The optical pickup apparatus includes an optical source, a beam splitter for changing the direction of...
EP0855701A2 Optical pickup compatible with recordable compact disk and digital video disk using plane parallel plates  
An optical pickup is compatible with at least two types of optical recording media which use light beams having different wavelengths for recording and reproduction of information. The optical...
5774443 Optical head device capable of reducing the light power loss  
An optical head for an optical disk drive which can reduce the light power loss due to the beam characteristics of a laser beam to improve the efficiency of use of laser power. The optical head...
EP0828244A2 Optical pickup using an optical phase plate  
An optical pickup apparatus having compatibility with a recordable compact disk (CD-R) and a digital video disk (DVD) uses one of a first light (31) and a second light (40) according to a recording...
5661604 Image display apparatus  
A compact, lightweight and wide-field head-mounted image display apparatus which is effectively corrected for chromatic aberration. The apparatus includes an image display device (1) for displaying...
5644413 Optical head for adjusting a positional relation between the information medium and the optical head  
An optical head apparatus consists of a semiconductor laser for radiating a light beam, a first collimator lens for collimating the light beam, a wedge-like prism for reshaping the light beam, a...
Matches 1 - 31 out of 31