Surface light source device with polarization function

Details Surface light source device with polarization function Surface light source device with polarization function

1995-03-13

1999-11-09

Shafer, Ricky D.

Optical: systems and elements

Polarization without modulation

Polarizarion by dichroism

359495, 385146, 385 43, 385901, 362 19, 362 32, 349 62, G02B 530, G02B 610, F21V 704, F21V 914

Patent

active

059825405

ABSTRACT:
Light is supplied into a light incident surface 2 from a fluorescent lamp L enclosed by a silver foil sheet R, and parallelized illuminating light flux is taken out from a light exit surface 3. On a back surface 4 side of a light flux parallelizer 1, across or without a thin air layer 5, a polarization converter .EPSILON. is disposed. The polarization converter .EPSILON. reinforces the polarization function of the surface light source device through polarization conversion action accompanying reflection in the prism. At a position confronting the light exit surface 3 across an air layer 7, a polarization separating plate 8 is disposed. At a further outside, across an air layer 9, an exit light direction modifier 10 is disposed. A bright polarized illuminating light flux is emitted from a light exit surface 11. When applied to a backlight of a liquid crystal display, a liquid crystal display panel is disposed at a further outside of the exit light direction modifier 10.

REFERENCES:
patent: 4059916 (1977-11-01), Tachihara et al.
patent: 4453200 (1984-06-01), Treka et al.
patent: 4618216 (1986-10-01), Suzawa
patent: 4706173 (1987-11-01), Hamada et al.
patent: 4794492 (1988-12-01), Vinther
patent: 5050946 (1991-09-01), Hathaway et al.
patent: 5123077 (1992-06-01), Endo et al.
patent: 5157526 (1992-10-01), Kondo et al.
patent: 5202950 (1993-04-01), Arego et al.
patent: 5211463 (1993-05-01), Kalmanash
patent: 5295048 (1994-03-01), Park et al.
patent: 5303322 (1994-04-01), Winston et al.
patent: 5359691 (1994-10-01), Tai et al.
patent: 5548670 (1996-08-01), Koike
U.S. application No. 08/064,175, Koike, filed May 25, 1993.
U.S. application No. 08/214,589, Koike, filed Sep. 22, 1993.
U.S. application No. 08/403,880, Koike, filed Mar. 21, 1995.
U.S. application No. 08/402,483, Arai, filed Mar. 10, 1995.

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