Two-dimensional diffraction grating with alternate multilayered stacks and its process of manufacture, and spectroscopic devices including these gratings
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Dec 8, 2005
app pub date -
Dec 23, 2004
filing date -
Dec 23, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The invention concerns a two-dimensional diffraction gratting for the dispersion of polychromatic or quasi-monochromatic luminous flux including a substrate (2) having a surface (3), a first (5) and a second (6) stacks of thin biperiodic layers of period d in the thickness direction, including at least ten periods, each period d being formed of layers of at least two different materials (7, 8), said stacks (5, 6) forming contiguous lines (11) of width p/2, parallel to one another, and repeated periodically along a direction parallel to the surface of the substrate (2) with a period p, the second stack (6) being alternate with the first stack (5) and offset in width by d/2, so that the stacks (5 and 6) form a thick gratting (9) carried by the substrate (2). According to the invention, said thick grafting (9) consists of the doubly periodical repetition of a same unit cell, topped with a thin surface gratting (10) having an amplitude at the most equal to d/2.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully