Optical take-up apparatus

Optical take-up apparatus

  • CN 1,044,358 A
  • Filed: 01/20/1990
  • Published: 08/01/1990
  • Est. Priority Date: 01/20/1989
  • Status: Abandoned Application
First Claim
Patent Images

1. , optical take-up apparatus with an object lens record and/or reproduction, wherein, a branch of (L) focuses on a kind of recording medium with single Shu Fangfa, record reflects it on the photo-detector, thus, a tracking circuit that comprises coarse adjustment mechanism and fine adjustment mechanism is connected to the position that light beam drops on data-storing track (S) on the recording medium, wherein described, micro-adjusting mechanism moves and the inclination object lens along the direction (W) of the angle α

  • that becomes a regulation with normal (R) direction of pursuit path, the printing medium beam reflected is refracted into again by some photodiode (A, B, C and D) on the photo-detector formed, the signal (AS that sends by these photosensitive two long-pending pipes, BS, CS and DS) and and difference produced trail-and-error signal (TE).

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