Underwater inspection apparatus and method
First Claim
Patent Images
1. A holographic recording and reproducing system comprising:
- means for using a beam of radiation from a source for recording holographic images of an object positioned in a first medium and replaying said images in a second medium;
means selectively responsive to the polarization of radiation reflected from said source; and
gating means for selectively limiting an extent, in a direction of propagation of said radiation, of the region from which images are recorded substantially to reduce the effect on a photosensitive medium of radiation other than radiation capable of producing said holographic images, wherein said gating means includes coherence gating means selectively to receive radiation from a predetermined target region.
2 Assignments
0 Petitions
Accused Products
Abstract
A holographic recording and reproducing system for recording holographic images of an object positioned in a first medium and replaying said images in a second medium incorporates means for enhancing the relative sensitivity of the system to radiation capable of producing said holographic images.
-
Citations
5 Claims
-
1. A holographic recording and reproducing system comprising:
-
means for using a beam of radiation from a source for recording holographic images of an object positioned in a first medium and replaying said images in a second medium; means selectively responsive to the polarization of radiation reflected from said source; and gating means for selectively limiting an extent, in a direction of propagation of said radiation, of the region from which images are recorded substantially to reduce the effect on a photosensitive medium of radiation other than radiation capable of producing said holographic images, wherein said gating means includes coherence gating means selectively to receive radiation from a predetermined target region. - View Dependent Claims (2, 3, 4, 5)
-
Specification