A SYSTEM AND METHOD FOR COLOR IMAGE ACQUISITION - TECHNOLOGY INNOVATION MOMENTUM FUND ISRAEL LTD PARTNERSHIP

Title:

A SYSTEM AND METHOD FOR COLOR IMAGE ACQUISITION

Document Type and Number:

WIPO Patent Application WO/2014/207742

Kind Code:

A3

Abstract:

An imaging system color image acquisition including: an image sensor; a tunable spectral filter arranged in an optical path of light propagation towards the image sensor; and a controller connected to the image sensor and to the tunable spectral filter. The controller is configured and operable for generating a colored image by sequentially operating the tunable spectral filter for sequentially filtering light passing towards the image sensor with three or more different spectral filtering curves during three or more corresponding integration time durations. The tunable spectral filter is configured, as an etalon and includes a pair of reflective surfaces. At least one of the reflective surfaces includes a layer of high refractive index of at least n=2.3 or even higher than 3, or a layer of low refractive index, smaller than n=1. The configuration of the etalon provide wide transmission peaks of the spectral curves with full-width-half maximum (FWHM) in the range of about 50 to 80 nm, free spectral range (FSR) of at least 300nm, and thickness of the etalon in the order to 1mm or even less.

Inventors:

MENDLOVIC DAVID (IL)
RAZ ARIEL (IL)

Application Number:

PCT/IL2014/050566

Publication Date:

February 26, 2015

Filing Date:

June 24, 2014

Export Citation:

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Assignee:

TECHNOLOGY INNOVATION MOMENTUM FUND ISRAEL LTD PARTNERSHIP (IL)

International Classes:

G01J3/26; H04N9/04

Domestic Patent References:

WO2011064403A1	2011-06-03
WO2001028224A2	2001-04-19

Foreign References:

US20050027166A1	2005-02-03
JP2009033222A	2009-02-12
US20090236525A1	2009-09-24
EP0693683A1	1996-01-24
US20050029437A1	2005-02-10

Other References: