Light source apparatus and display apparatus

Optical: systems and elements – Diffusing of incident light

Reexamination Certificate

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Details

C359S831000, C362S620000, C362S627000

Reexamination Certificate

active

07492520

ABSTRACT:
A light source apparatus is provided. The light source apparatus includes: a light-emitting portion; a light-guiding plate having the light-emitting portion disposed at a side surface thereof, light beams being emitted from a top surface of the light-guiding plate; and a light path converting sheet above the light-guiding plate, formed of a prism sheet including cylindrical prisms, a cross-section of which is an isosceles triangle. Each of the prisms includes a light incidence plane that forms a first equilateral constituting an apex angle of the isosceles triangle, a reflection plane that forms a base of the isosceles triangle and a light exit plane that forms a second equilateral constituting the apex angle of the isosceles triangle The prism is disposed such that the light incidence plane is approximately perpendicular to a direction of light beams with highest luminous intensity among the light beams emitted from the top surface of the light-guiding plate.

REFERENCES:
patent: 6011602 (2000-01-01), Miyashita et al.
patent: 6746130 (2004-06-01), Ohkawa
patent: 7153017 (2006-12-01), Yamashita et al.
patent: 7401962 (2008-07-01), Yamashita et al.
patent: 2002/0041441 (2002-04-01), Wang
patent: 2006/0274244 (2006-12-01), Battiato et al.
patent: 2007/0223249 (2007-09-01), Lee et al.
patent: 10-253807 (1998-09-01), None

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