Optical Pick-up

Business Introduction

OPU (Optical Pick Up) is an optical device that records useful information such as voice, video and general data to an optical disc (CD, DVD, BD) using a laser, or reproduces the information recorded in an optical disc.

Storage Capacity

Product

OPU (Optical Pick Up) is divided into DVD and Blu-ray. IM produces DVD Pick up, Deck, Loader and Blu-ray Pick up, etc.

    Mechanical Specifications

    Items Specifications
    Objective Lens Focal Length (f) DVD(3.05mm), CD(3.08mm)
    Working Distance (W.D.) DVD(1.70mm), CD(1.34mm)
    Laser Diode Type Twin Multi mode LD
    Laser Wave Length DVD(640-660nm), CD(775-805nm)
    Actuator Focus Sensitivity (5hz) 1.5 ± 0.4mm/V
    Tracking Sensitivity (5hz) 1.1 ± 0.3mm/V
    Error Signal Detection Method Focus Error Signal Differential Phase Detection Method for DVD
    Tracking Error 3-Beam Method for CD

    Mechanical Specifications

    Items Specifications
    Weight 100g
    Dimension 105(W) * 83.5(D) * 23.2(h) mm
    Movable Distance of Objective Lens Focus Axis : Up (0.85mm against reference for DVD/CD
    Down (0.85mm against reference for DVD/CD)
    Tracking Axis : ± 0.50mm or more
    Sled Motor Rated Load Speed 1,410 ± 250 rpm
    (Applied Vtg 2.0V) Starting Torque 0.78mN.m
    Feed Mechanism Access Time (2.0V) < 3.5sec (one way)D

    Mechanical Specifications

    Items Specifications
    Weight 250g
    Dimension 136(W) * 173(D) * 28(H) / 37(H) mm
    Movable Distance of Objective Lens Focus Axis : Up (0.85mm against reference for DVD/CD
    Down (0.85mm against reference for DVD/CD)
    Tracking Axis : ± 0.50mm or more
    Loading Motor Rated Load Speed 1,410 ± 250 rpm
    (Applied Vtg 2.0V) Starting Torque 0.78mN.m
    Feed Mechanism Access Time (5.0V) < 3.5sec (one way)D

    Recoding Capacity

    25GB

    Laser Wavelength

    405nm (Blue-Violet Laser)

    Lens Numerical Apature (NA)

    0.85

    Data Transfer Rate

    40Mbps

    Disc Diameter

    120mm (Same as CD and DVD)

    Diac Thickness

    1.2mm

    Disc Substrate

    0.1mm

    Track Pitch

    0.32nm

    Shortest Pt Length

    0.149um

    Video Recording Format

    MPEG2 Video

    Audio Recording Format

    AC3, MPEG1, Layer2, etc.