Optical head apparatus

Details Optical head apparatus Optical head apparatus

1996-09-26

1999-03-23

Letscher, George J.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

369 4415, 359813, G11B 2124, G11B 700

Patent

active

058869786

ABSTRACT:
An optical head apparatus is realized in which an objective lens actuator and the whole optical system are reduced in height, and which can be used in common between a system in which the light beam comes incident in the direction of the radius of the information disk and another in which the light beam is arranged in a direction tangent to the information disk. A lens holder having a substantially hexagonally shaped plane is supported by two wire springs, each shaped in a triangle with two of its aides extended and fitted to an actuator base, to be able to freely move up and down and to freely rotate. On two side walls of a lens holder are arranged tracking coils and focusing coils, and magnets are arranged in opposite positions of the actuator base. Underneath an objective lens is arranged an opening wide in the horizontal direction, and the dimension of the apparatus in the vertical direction (the direction normal to the surface of the diagram) can be reduced by arranging a 45-degree mirror in this space not in contact with the lens holder.

REFERENCES:
patent: 5050964 (1991-09-01), Mori
patent: 5184002 (1993-02-01), Chu
patent: 5187702 (1993-02-01), Takahashi
patent: 5220459 (1993-06-01), Ichikawa et al.

Affiliated with

Also associated with

Rating

Optical head apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2133211