Claims
- 1. A liquid crystal display unit comprising:a light source generating first light proceeding along an optical path; polarizing layers provided on said optical path, and spaced from each other; a liquid crystal panel provided between said polarizing layers, and including a liquid crystal layer for producing second light carrying an image from said first light and having a first anisotropic index ellipsoid with respect to one of a normal line to an incident surface of said liquid crystal panel and an oblique line declining from said normal line; only a single optically anisotropic layer provided on said optical path, and having a second anisotropic index ellipsoid opposite to said first anisotropic index ellipsoid with respect to said one of said normal line and said oblique line; and an optically diffusing layer provided on said optical path for averaging an intensity of said second light, said second light being produced by said liquid crystal panel.
- 2. The liquid crystal display unit as set forth in claim 1, in which said single optically anisotropic layer is inserted between said liquid crystal panel and one of said polarizing layers provided on an opposite side to said light source with respect to said liquid crystal panel.
- 3. The liquid crystal display unit as set forth in claim 1, in which said single optically anisotropic layer is inserted between said liquid crystal panel and one of said polarizing layers provided on the same side as said light source with respect to said liquid crystal panel.
- 4. A liquid crystal display unit comprising:a light source generating first light proceeding along an optical path; polarizing layers provided on said optical path, and spaced from each other; a liquid crystal panel provided between said polarizing layers, and including a liquid crystal layer for producing second light carrying an image from said first light and having a first anisotropic index ellipsoid with respect to one of a normal line to an incident surface of said liquid crystal panel and an oblique line declining from said normal line; an optically anisotropic layer provided on said optical path, and having a second anisotropic index ellipsoid opposite to said first anisotropic index ellipsoid with respect to said one of said normal line and said oblique line; and an optically diffusing layer provided on said optical path for averaging an intensity of said second light, said second light being produced by said liquid crystal panel; in which said optically diffusing layer has a plurality of cylindrical lenses alternated with a plurality of flat surface portions.
- 5. The liquid crystal display unit as set forth in claim 4, in which said cylindrical lenses extend in a direction vertical to a direction where a viewing angle dependency of an image produced on a screen is larger than that in another direction.
- 6. The liquid crystal unit as set forth in claim 4, in which said cylindrical lenses are arranged at a certain pitch, and the ratio between the farthest point of said cylindrical lens from said flat surface and said pitch ranges between 2.9:10 and 0.8:10.
- 7. The liquid crystal display unit as set forth in claim 4, in which said plurality of flat surfaces are mirror finished.
Priority Claims (1)
Number |
Date |
Country |
Kind |
8-167388 |
Jun 1996 |
JP |
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Parent Case Info
This is a continuation of application Ser. No. 10/059,197 filed Jan. 31, 2002, now U.S. Pat. No. 6,483,561, which is a divisional of application Ser. No. 08/883,576 filed Jun. 26, 1997, now abandoned; the disclosure of which is incorporated herein by reference.
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Continuations (1)
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Number |
Date |
Country |
Parent |
10/059197 |
Jan 2002 |
US |
Child |
10/268683 |
|
US |