TH19486A - Optical pick-up device using a multi-lens mount - Google Patents

Abstract

In an optical pick-up device optimized for measuring the reflected light received from a plate using a detector. Measure optical power To drive the objective lens in the direction of Focus and tracking based on the measured signal of the body Optical energy meter Multi-lens for sensitivity improvement and Improved accuracy of optical power meter And the mul holder The multi-lens mount is provided here, the shape of the multi-lens holder is what is the shape that blocks one optical path. From the light source to the beam separator And block the second optical path from the splitter to the optical power meter, thus adjusting the spacing between the multi-lens And optical power monitors can be facilitated, and the shape of the optical pick-up device itself can be a structure that Thin and lightweight

Claims (1)

1. Optical pick-up equipment, which consists of: light source; A reflection device for reflecting light emitted from a light source, so the optical axis of the beam is changed. To direct the reflected light of this beam to the objective lens; Objective lens drive device for driving near lenses Objects in the focus direction and the tracking direction; Spectral devices for optical separation for light emitted from Light source And the reflected light from the optical disc that falls through Objective lens; Base assembly for supporting light source, reflection device