Patent
1986-03-18
1987-06-09
Corbin, John K.
350414, G02B 1318, G02B 2102
Patent
active
046716238
ABSTRACT:
An object lens for use in focusing a laser light beam onto a recording surface in an optical data read-out apparatus, is formed with opposing refracting aspheric surfaces which are shaped in accordance with new aspheric surface equations, whereby the shapes of the aspheric surfaces are simple and readily formed. The thickness of the lens can be made smaller than is possible with prior art types of such lens, although satisfactory values for the degree of aberration correction and focal distance are maintained.
REFERENCES:
patent: 4027952 (1977-06-01), Hugues
patent: 4525040 (1985-06-01), Nakamura
patent: 4595264 (1986-06-01), Nakamura
patent: 4600276 (1986-07-01), Bietry
patent: 4613212 (1986-09-01), Norikazu
Corbin John K.
Pioneer Electronic Corporation
Sugarman Scott J.
LandOfFree
Aspheric object lens for optical data read-out 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 Aspheric object lens for optical data read-out apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aspheric object lens for optical data read-out apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1825479