Optical: systems and elements – Polarization without modulation – Polarizarion by dichroism
Patent
1998-01-16
1999-08-24
Phan, James
Optical: systems and elements
Polarization without modulation
Polarizarion by dichroism
359529, 359900, 359530, G02B 530, G02B 5124
Patent
active
059431679
ABSTRACT:
A retroreflecting polarizer comprises a pair of first and second substrates, each essentially like the other, each having a planar first surface and a structured second surface, whereby the structured second surface comprises a linear array of isosceles prisms with faces formed at an angle of approximately tan.sup.-1 (1
) with respect to the planar first surface. The respective structured second surfaces of the first and second substrates are mated with one another through one or more of substantially uniformly thick layers, all of the same optical material, that are parallel to the structured surfaces. The structured surfaces and layers are separated from one another by associated air gaps. The interfaces formed within the retroreflecting polarizer satisfy Brewster's condition for a light beam normally incident upon the retroreflecting polarizer which is split into a .sigma.-polarized retroreflected light beam and a substantially .pi.-polarized transmitted light beam.
REFERENCES:
patent: 2402176 (1946-06-01), Marks
patent: 2403731 (1946-04-01), Nacneille
patent: 2492809 (1949-12-01), Marks
patent: 2887566 (1959-05-01), Marks
patent: 3458248 (1969-07-01), Eversole
patent: 4553822 (1985-11-01), Mahlein
patent: 4556292 (1985-12-01), Mathyssek et al.
patent: 5157526 (1992-10-01), Kondo et al.
patent: 5394253 (1995-02-01), Kelly
patent: 5422756 (1995-06-01), Weber
patent: 5559634 (1996-09-01), Weber
patent: 5572362 (1996-11-01), Shikama et al.
Polarization, Optics 2e, Klein Miles V. and Furtak, Thomas E., John Wiley & Sons, Inc., New York, 1986, pp. 596-598.
The Polarization of Light, Physical Optics 3e, Optical Society of America, Washington, D.C., 1988 (Original 1934), pp. 329-335.
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