Method of producing optical head assembly

Details Method of producing optical head assembly Method of producing optical head assembly

1988-04-29

1989-08-22

Arnold, Bruce Y.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 46, G02B 2700, G11B 509

Patent

active

048590339

ABSTRACT:
An optical IC-type head assembly for recording and for reading information on an optical disc, comprising a substrate, a light guiding layer comprising a dielectric thin film formed monolithically on the substrate, a laser oscillator for injecting the laser beam into the light guiding layer, a grating coupler for converging the laser beam on the optical disc, and a photo detector for receiving the beam reflected by the optical disc and coming out of the grating coupler. In one embodiment the substrate is made of material having cleavability. One side surface of the light guiding layer receiving the laser beam is a break surface formed by cleaving the substrate along the cleavage plane. The photo detector is disposed at the break surface of the light guiding layer. The substrate is preferably made of single crystal material. In another embodiment, a beam splitter is disposed between the laser oscillator and the grating coupler for splitting the reflected beam coming out of the grating coupler into two symmetrical beams. Each split beam forms an acute angle with respect to the optical axis of the reflected beam. The acute angle is preferably less than 30 degrees. The beam splitter may converge each of the split beams at a photo detecting element disposed between the laser oscillator and the grating coupler.

REFERENCES:
patent: 4718052 (1988-01-01), Kondo et al.
patent: 4760568 (1988-07-01), Hine

Affiliated with

Also associated with

Rating

Method of producing optical head assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing optical head assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing optical head assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2415003