Digital holography device and image generation method using digital holography
US9201397B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2012 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | Oct 25, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2222/31
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A digital holography device (1) which is capable of measuring a subject with high accuracy by correcting intensity unevenness by accurately removing zeroth-order diffracted light, includes: a hologram generating section (26) for generating a first hologram and a second hologram each obtained by extracting components identical in phase shift amount from a polarizer array hologram which is recorded in an image capturing device (7) mounted with a polarizer array (6); a dividing section (3) for dividing the first hologram into a plurality of first regions, and dividing the second hologram into a plurality of second regions; a comparing section (4) for comparing a first average value of an intensity in a first region of the first hologram and a second average value of an intensity in a second region of the second hologram which region corresponds to the first region; and a correcting section (5) for, in a case where the first average value and the second average value differ, correcting at least one of the first average value and the second average value so that the first average value and the second average value are equal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.