Optical signal acquiring device

Abstract

An optical signal acquirer comprises a base, a movable part and an optical path system, wherein, the optical path system comprises a holographic tube mechanism, a holophote and an object lens; the holographic tube mechanism and the holophote are fixed on the base; the movable part comprises an object lens bracket which is provided for arranging the object lens, as well as a focusing coil and a tracking coil, a magnetic component which is fixed on the base and provides a magnetic field for the coils, an object lens bracket base which is fixed on the base and provided with a first conducting part, a second conducting part which is arranged on the object lens bracket, and four suspension wires one ends of which are supported on the object lens bracket base and interconnected with the first conducting part arranged on the object lens bracket base, and the other ends of which are connected with the ends of the focusing coil and the tracking coil by the second conducting part. The object lens bracket is adjustably supported on the object lens bracket base with the help of the four suspension wires; and the holographic tube mechanism and the object lens bracket base are fixed on the same end of the base.

Description

technical field [0001] The present invention relates to a magnetic disc optical assembly, and more particularly to an optical signal acquirer capable of irradiating light onto a rotating optical disc to record information signals on the optical disc or to read information signals from the optical disc. Background technique [0002] At present, an optical signal acquirer generally used for recording information signals on an optical disc or reading information signals from an optical disc has an optical path system of an objective lens, a movable part, and a base; wherein, the optical path system includes: a light source, a An optical path conversion device, an objective lens, and a photosensitive element composed of a mirror, a collimating mirror and a beam splitter, the light-emitting element, the optical path conversion device, and the photosensitive element are located on the base; The laser beam converges and irradiates the signal recording surface of the optical disc. A...

AI Technical Summary

Problems solved by technology

[0003] Because the objective lens support seat of the first printed circuit board and the light source system except the objective lens are respectively fixed on the two ends of the base in the existing optical signal acquirer, the objective lens support is arranged in the middle separated (see attached Image 6 , a represents the objective lens support seat; b represents the light source system; c represents the objective lens support), and the objective lens support is also provided with a coil support and too many components of the light source system have a complicated structure, so that the existing The optical signal acquirer is relatively large in size, takes a lot of time to assemble, and is relatively heavy, which is not conducive to carrying it around

Images