Optical pick-up device
a pickup device and optical technology, applied in the field of optical pickup devices, can solve the problems of sub-resonance problems, difficult compensation of two-axis optical pick-up actuators, increased comma aberration, etc., and achieve the effect of simple structure and few moving parts
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[0024] In a particularly preferred embodiment of the present invention there is provided an optical pick-up device for use in an optical recording / reproducing system. The optical pick-up device comprises at least one variable focal length micromirror array lens. The micromirror array lens records and / or reads information on or from an optical disc. The present invention provides focusing, tracking, and tilt compensation of the optical pick-up with minimal macroscopic motion.
[0025] While aspects of the present invention are applicable to a variety of optical pick-up devices, a representative example of an optical pick-up device 20 to which embodiments of the present invention are applied is shown in FIG. 1. As shown in FIG. 1, the optical pick-up device 20 includes a laser diode 22, a first optical lens 24, a beam splitter 26, a second optical lens 28, a micromirror array lens 30, a sensor 40, a tilt detector 51 and a signal processor 50. The foregoing components are preferable pack...
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