Lighting apparatus and liquid crystal display

G - Physics – 02 – F

Patent

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Details

G02F 1/13357 (2006.01) F21V 33/00 (2006.01)

Patent

CA 2376387

A lighting apparatus (10) comprising light sources (12a, 12b) for emitting light, a plurality of light reflection portions (20, 20a, 20b) formed on the reflection side for reflecting light incident from the light sources (12a, 12b), and a linear photoconductor (14) for causing the light to exit from the exit side opposed to the reflection side, the planes of the plurality of reflection portions (20, 20a, 20b) being respectively tilted at angles which converge the light to the human eyes watching. Angles of the light reflection portions (20, 20a, 20b) are set so that exit angles of light exiting from the linear photoconductor (14) are required angles, whereby the lighting apparatus (10) can have a uniform light intensity distribution. The application of the lighting apparatus (10) can provide a liquid crystal display of good display characteristics.

Un appareil d'éclairage (10) comprenant des sources d'émission lumineuse (12a, 12b), un ensemble de surfaces de réflexion de lumière (20, 20a, 20b) formé du côté réfléchissant afin de réfléchir la lumière des sources de lumière (12a, 12b), ainsi qu'un photoconducteur linéaire (14) qui permet à la lumière de s'échapper du côté opposé au côté réfléchissant, chacun des plans de l'ensemble de surfaces de réflexion de lumière étant incliné à un angle respectif de convergence des rayons lumineux en direction de l'oil de l'observateur. Les angles des surfaces de réflexion de lumière (20, 20a, 20b) sont déterminés de manière que les angles de sortie de la lumière qui s'échappe du photoconducteur linéaire (14) sont des angles nécessaires, l'appareil d'éclairage (10) pouvant ainsi jeter un éclairage dont l'intensité est uniforme. L'application de l'appareil d'éclairage (10) est un affichage à cristaux liquides de bonne qualité.

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