Device and method allowing observation of an object with a large field of observation without use of magnifying optics between a light source and the object
US10852696B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 3, 2016 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Dec 4, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2222/54
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device and a method for observing an object by imaging, or by lensless imaging. The object is retained by a holder defining an object plane inserted between a light source and an image sensor, with no enlargement optics being placed between the object and the image sensor. An optical system is arranged between the light source and the holder and is configured to form a convergent incident wave from a light wave emitted by the light source, and for forming a secondary light source, conjugated with the light source, positioned in a half-space defined by the object plane and including the image sensor, such that the secondary source is closer to the image sensor than to the holder. This results in an image with a transversal enlargement factor having an absolute value of less than 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.