Optical pick-up head without pick-up of stray light

Details Optical pick-up head without pick-up of stray light Optical pick-up head without pick-up of stray light

1988-02-03

1989-10-10

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250211J, 357 19, H01J 314

Patent

active

048734292

ABSTRACT:
An optical pickup head comprising a substrate on which a optical sensor is formed, and an optical member adhered on said optical sensor on said substrate by an adhesive and including a semitransmissive reflective film adapted to reflect the light emitting from a laser source and to transmit the light returned from a second medium of a disk, characterized in that the refractive index of said optical member is set so as to be larger than the refractive index of said adhesive.

REFERENCES:
patent: 4733067 (1988-03-01), Oinoue et al.
patent: 4772784 (1988-09-01), Yoshitoshi et al.

Affiliated with

Also associated with

Rating

Optical pick-up head without pick-up of stray light 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 pick-up head without pick-up of stray light, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical pick-up head without pick-up of stray light will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1959237