In-line holographic lens arrangement

Details In-line holographic lens arrangement In-line holographic lens arrangement

1988-02-16

1989-03-07

Corbin, John K.

350 373, 35016212, 350400, G02B 532, G02B 2728, G02B 2746

Patent

active

048100471

ABSTRACT:
An optical system for an in-line holographic lens or lens array which is designed to produce and pass a symmetrical focused beam of light while or blocking or attenuating the zero order in-line collimated beam illuminating and passed by the lens. Each holographic lens is designed to produce a symmetrical focused beam of light, and has particular applicability to high quality, low f-number holographic lenses. In the optical system, the in-line holographic lens is illuminated by a reconstruction beam of light such that it produces a focused beam of light along the optical axis of the lens, and also passes the zero order in-line reconstruction beam. A polarization rotator is positioned along the optical axis to receive the focused beam of light and also the zero order reconstruction beam, with the focused beam of light being incident thereon and traversing through the polarization rotator at different angles from the zero order reconstruction beam. This results in the zero order reconstruction beam being rotated in polarization differently from the focused beam of light. A polarization filter is positioned along the optical axis to receive the light output of the polarization rotator, and has the polarization angle thereof positioned substantially at the polarization angles of the focused beam, such that it substantially passes the focused beam of radiation and substantially attenuates the zero order reconstruction beam.

REFERENCES:
patent: 4312559 (1982-01-01), Kojima et al.
patent: 4586780 (1986-05-01), Chern et al.

Affiliated with

Also associated with

Rating

In-line holographic lens arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with In-line holographic lens arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and In-line holographic lens arrangement will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1664064