KR970050383A - All-in-one optical pick-up device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical pick-up apparatus for recording a signal on an optical data recording medium and reproducing the recorded information as an electrical signal. In particular, the optical pick-up apparatus is integrated and formed in a plurality of optical elements to facilitate assembly and adjustment. An integrated optical pick-up device for contributing to shortening.

To this end, an optical pick-up apparatus for condensing a beam using a laser beam as an objective lens to record a signal on a disk and reproducing the recorded information with an electric signal, comprising: a silicon substrate on which a plurality of optical elements are placed; A laser diode for generating a laser beam at a wavelength, the integrated silicon formed on one side of the silicon substrate, the laser diode is placed, the support having a heat dissipation function, is disposed at a predetermined interval on both sides of the support and integrally formed on the silicon substrate disk First and second photodetectors for detecting optical information of a light source; a prism formed at an upper portion of the other side of the silicon substrate and transmitting a beam emitted from the laser diode; and a diagonal portion formed at a central portion of the prism to reflect a laser beam; Transmit and diffract and irradiate the objective lens, and optical information is adjusted with the first and second photodetectors. A reflective hologram lattice formed on the prism and a hologram lattice which is formed on the prism and diffracts optical information returned through the disk to generate a focus error signal, and is integrally formed, and an incident beam is formed between the objective lenses of the hologram lattice. The light beam is provided by the wavelength conversion part which converts an abnormal light into an abnormal light, and converts into an ordinary light.

Description

All-in-one optical pick-up device

As this is a public information case, the full text was not included.

2 is a block diagram of an integrated optical pick-up device according to the present invention;

3 is an enlarged cross-sectional view of a reflective holographic lattice according to the present invention;

4 is a plan view of the integrated optical pick-up device according to the present invention;

Claims (1)

In an optical pick-up apparatus for condensing a beam using a laser beam as an objective lens 54 to record a signal on a disk 55, and reproducing the recorded information, an electrical signal is provided. A substrate 61, a laser diode 63 for generating a laser beam at a predetermined wavelength, an integrated body formed on one side of the silicon substrate 61, and the laser diode 63 is placed therein, and a support 62 having a heat radiation function; First and second photodetectors 66a and 66b disposed on both sides of the support 62 and integrally formed on the silicon substrate 61 to detect optical information of the disc, and the silicon substrate 61. A prism 64 formed at an upper portion of the other side and transmitting a beam emitted from the laser diode furnace 63, and a diagonal portion formed at a central portion of the prism 64 to reflect, transmit, and diffract a laser beam. Irradiate with a lens 54, light tablet The reflective hologram grating 65 for irradiating beams to the first and second photodetectors 66a and 66b and the optical information formed on the prism 64 and diffracted by the optical information returned through the disc to focus the error signal. The generated holographic lattice 67 is integrally formed, and the incident beam is formed between the hologram lattice 67 and the objective lens 54 by the ordinary light beam (P wave) as the abnormal light beam (S wave), and the abnormal light beam (S wave). Integrated optical pick-up device consisting of a wavelength conversion unit 67 for converting a wave) into an ordinary light (P wave). ※ Note: The disclosure is based on the initial application.