Staggered holographic write intervals interleaved with reads preserve data recoverability while cutting continuous exposure time and energy use.
A diffusing layer spreads stray light before an absorbing layer captures it, reducing harsh tones and improving optical-disc sound quality.
Configurable multimode waveguides replace mechanical actuators, enabling scalable, reliable holographic data access.
Multimode waveguides steer input, reference, and output beams, replacing mechanical movement for scalable holographic recording.
Multi-step diffractive structure corrects spherical aberration for three wavelengths, eliminating unwanted light that destabilizes focus servo.
A near-field light generating element uses dual etching stopper layers to manage plasma antenna formation.
An aspherical optical pickup lens uses tailored curvature profiles to correct aberrations and maintain a longer working distance at high numerical aperture.
A plastic objective lens with superimposed diffractive structures corrects spherical aberration across multiple wavelengths.
Light blocking members segment the optical path to prevent laser irradiation of bonding adhesives in optical pickup devices.
Objective lens with diffraction structure separates normal and unwanted diffracted order light to maintain focus error signal integrity.
Layered diffraction gratings and dye cover absorb stray light to eliminate dark-state leakage at wide viewing angles.
Replacing bulky DC motors with piezoelectric actuators reduces device thickness while maintaining lens positioning accuracy and improving heat dissipation.
Temperature detection triggers actuator-driven lens movement to correct spherical aberration caused by thermal expansion in optical storage devices.
Adhesive positions beam shaping element relative to light source to suppress astigmatism caused by thermal expansion and prevent mechanical contact.
An interference-type optical pickup divides light into signal and reference beams to amplify readout signals on detectors.
Segmented lens holders with heat dissipation grooves reduce thermal transmission to object lenses while maintaining strong bonding for reliable actuation.
A complex optical element combines two materials with a diffraction face in the bond area to shape incident laser light.
Multi-layer optical films with specific refractive index differences and diffraction gratings reduce light leakage at wide viewing angles.
Integrates an optical-path conversion mirror directly onto a sub-mount substrate to simplify assembly and reduce positional errors in laser systems.
Combining independent optical path difference functions into a single diffracting structure corrects spherical aberrations while supporting multiple disc types.
Segmented phase correcting zones compensate spherical aberration across different wavelengths, preventing tracking errors without adding finite optical systems.
Integrates driving coils directly into the lens frame to maintain structural symmetry, preventing warpage that causes tracking delays in slim optical pickups.
Six-area diffraction grating with shifted centers directs reflected light beams to specific detection zones for precise signal processing.
A light blocking unit partitions a four-region photodetector to maintain uniform intensity across divided areas.
A resin objective lens suppresses coma aberration by adjusting the refractive index distribution to reduce tilt sensitivity at low temperatures.
A segmented diffraction grating creates symmetric convergence spots in an optical pickup device.
Optical waveguide deflects laser light into the laminating direction to heat the magnetic recording medium.
Single-arm optical path shares relay lens to equalize environmental interference on signal and reference beams, improving anti-interference stability.
A non-reentrant quadratically distorted grating and grism combination captures multi-colour images from multiple object planes onto a single image plane.
Orthogonal winding boss projections prevent solder supply obstruction, ensuring stable electrical connections between drive coil leads and suspension wires.
Convex portion geometry ensures uniform UV curing of photo-curable adhesives, suppressing focus offset under varying temperature and humidity conditions.
Dual-hardness adhesive bonding stabilizes the light flux separating unit, preventing thermal deformation and positional drift during operation.
Segmented hologram zones optimize astigmatism angles to reduce focus-error signal jitters caused by component positional inaccuracies.
Dichroic mirror reflects and transmits specific wavelengths to merge CD, DVD, and BD optical paths into a compact device.
A single objective lens integrates a multi-region diffraction unit to condense optical beams of three distinct wavelengths onto signal recording surfaces.
Virtual data marks resolve incompatibility between standard laser writers and delocalized encoding.
A diffraction element divides incoming light into two rays with distinct focal positions, resolving focus pull-in errors across varying disk thicknesses.
A closed-loop control system adjusts a spherical aberration correcting element to maintain signal quality in resin objective lenses.
A collimator lens adjusts light beam convergence to correct third-order spherical aberration in optical head devices.
Segmenting the lens into zones with distinct refractive powers and applying antireflection coatings resolves substrate thickness contradictions.
Feedback control and differential detection improve phase accuracy while reducing hardware complexity in optical data storage.
A protective member with a pre-filled liquid immersion medium and sealing film simplifies attachment by eliminating manual liquid addition steps.
A single object lens integrates a segmented diffraction unit to condense multiple optical wavelengths onto disc surfaces.
Segmenting the pole into spaced and proximal portions reduces adjacent track writing while maintaining optical performance.