Optical apparatus having reflecting porton split by an edge

Details Optical apparatus having reflecting porton split by an edge Optical apparatus having reflecting porton split by an edge

1996-02-26

1998-08-11

Huber, Paul W.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4412, 369 4424, G11B 700

Patent

active

057937320

ABSTRACT:
An optical apparatus that lends itself to size reduction and mass production and enables detection of a return light beam by a pre-set operation irrespective of the state of the return light. The optical apparatus has a reflecting mirror 11 arranged in the vicinity of the focal point of the return light beam obtained on reflection by an illuminated object of the outgoing light from a laser light source 3, such as a semiconductor laser, and photodiodes PD.sub.1A, PD.sub.2A, PD.sub.3A, PD.sub.1B, PD.sub.2B and PD.sub.3B, as light receiving portions, arranged facing first and second reflecting surfaces M.sub.A and M.sub.B of the reflecting mirror 11. The reflecting surfaces M.sub.A and M.sub.B are arranged for reflecting a portion of the return light, while signal detection is performed by the light receiving portions.

REFERENCES:
patent: 4823331 (1989-04-01), Yoshitoshi et al.
patent: 4971414 (1990-11-01), Funato et al.
patent: 5097464 (1992-03-01), Nishiuchi et al.
patent: 5444677 (1995-08-01), Hosokawa et al.
patent: 5446719 (1995-08-01), Yoshida et al.
patent: 5465247 (1995-11-01), Kobayashi
patent: 5515353 (1996-05-01), Miyazaki et al.
patent: 5544143 (1996-08-01), Kay et al.
patent: 5546371 (1996-08-01), Miyazaki
patent: 5581523 (1996-12-01), Seki et al.

Affiliated with

Also associated with

Rating

Optical apparatus having reflecting porton split by an edge 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 apparatus having reflecting porton split by an edge, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical apparatus having reflecting porton split by an edge will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-396849