Inventor

NISHINO SEIJI

JP72 patents

⚠️ This page may combine multiple inventors who share the name “NISHINO SEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NISHINO SEIJI

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

Optical disk device and information recording/reproducing method

Compound objective lens having two focal points

Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method

Compound objective lens for optical disks having different thicknesses

Diffractive optical element and optical head using the same

Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method

Optical element, optical head using the optical element, and optical recording and reproducing apparatus using the optical element

Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same

Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same

Optical head

Focus and tracking error detection by using plus and minus first order diffracted light

Optical head device and optical information apparatus using a lithium niobate hologram with divisional areas to diffract light to corresponding photo detector areas

Optical head for adjusting a positional relation between the information medium and the optical head

Optical pickup head apparatus capable of suppressing crosstalk from adjacent tracks and in the recording line density direction

Optical head apparatus for storing, reading or erasing information, and optical information reproducing method and optical information apparatus for optically reading information stored in an optical memory

Hologram and optical apparatus with hologram

Optical pick-up head apparatus wherein hollographic optical element and photodetector are formed on semiconductor substrate

Assembled lens, optical head and optical recordable player with them

Optical pickup head apparatus

Optical pickup head apparatus

Information recording medium and its production method, and optical information recording reproducing apparatus

Optical head apparatus, optical information recording and reproducing apparatus, method for detecting aberration and method for adjusting optical head apparatus

Optical head device with zero-cross point correction

Information recording medium and tracking error signal detection apparatus and magnetic recording apparatus and method of adjusting the magnetic recording apparatus

Optical head apparatus and diffraction element having at least two diffractive surfaces

Diffraction grating and optical pickup apparatus with diffracting grating

Optical element and method of fabricating the same

Optical disk device and information recording/reproducing method

Optical disk device and information recording/reproducing method

Diffractive optical element and optical head using the same

Optical head device and optical information apparatus using the same

Optical head with defocusing correction and spherical aberration correction

Optical element, optical head, optical recording reproducing apparatus and optical recording/ reproducing method

Optical disk device and information recording/reproducing method

Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same

Information recording and reproducing apparatus

Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same

Optical head device

Information recording medium and tracking error signal detection apparatus and magnetic recording apparatus and method of adjusting the magnetic recording apparatus

Holographic optical head

Holographic optical device

Optical element and method of fabricating the same

Optical pickup head

Optical pickup head

Protection film structure for functional devices

PANASONIC CORP

Information recording medium and optical information recording/reproducing apparatus

Objective lens for optical disks having different thicknesses

Optical disk device and information recording/reproducing method

Optical recording medium, optical information processor, and optical recording/reproducing method

MATSUSHITA ELECTRIC CO LTD

Movable optical head integrally incorporated with objective lens and hologram element