US 7,463,420 B2
	Configurable diffractive optical element
Hakon Sagberg, Oslo (Norway); Ib-Rune Johansen, Oslo (Norway); Odd Lovhaugen, Oslo (Norway); Olav Solgaard, Stanford, Calif. (US); and Matthieu Lacolle, Oslo (Norway)
Assigned to Sinvent AS, Trondheim (Norway); and The Board of Trustees of the Leland Stanford Junior University, Palo Alto, Calif. (US)
Filed on Sep. 19, 2007, as Appl. No. 11/857,605.
Application 11/857605 is a continuation of application No. 10/541317, granted, now 7,286,292, previously published as PCT/NO03/00437, filed on Dec. 22, 2003.
Claims priority of application No. 20026279 (NO), filed on Dec. 30, 2002.
Prior Publication US 2008/0007833 A1, Jan. 10, 2008
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 5/18 (2006.01)

U.S. Cl. 359—573  [359/572; 359/569]

8 Claims

1. Configurable diffractive optical element comprising an array of diffractive sub-elements having a reflective surface, wherein each sub-element has a controllable position with a chosen range, and in which a number of sub-elements are provided with a grating with a number of chosen spectral characteristics wherein each of the gratings is a diffractive grating which constitutes a diffractive lens.