| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical device to form a backlight module capable of secondary control in part of a light irradiation field. <P>SOLUTION: The optical device relates to the backlight module capable of secondary control in part of the light irradiation field. A light guide plate has a plurality of light guide elements, and the light guide elements are each provided with a surface light source having a center hole, a light guide plate entrance face, one light guide plate exit face, and a light guide plate bottom face. The surface light source is located in the center hole of the light guide element, and the light guide plate bottom face is provided with a plurality of micro structures. A condensing film sheet has a plurality of irradiation film elements, and the condensing film exit faces of the irradiation film elements are each provided with a plurality of micro structures. The irradiation film elements and the light guide elements are bonded to each other via the micro structures to form a backlight module device capable of secondary control in part of the light irradiation field. <P>COPYRIGHT: (C)2010,JPO&INPIT |
