Patent ID: 6536932
Filing Date: 2003-03-25
Classification: G02B

Abstract:
A spread illuminating apparatus, in which a bar-like light source is disposed close to an end face of a transparent substrate made of a transparent material, wherein a frame, which comprises a frame body and two facing plates opposing each other where a first facing plate continuous with the frame body is pre-bent to be approximately perpendicular thereto, a second facing plate continuous with the frame body is pre-bent to be approximately perpendicular thereto, and the distal end portions thereof are pre-bent to be inclined relative to proximal portions, and which either includes a light reflection member or has a light reflecting function is rigidly structured, andwherein a first spacing portion rectangular in cross section in which the bar-like light source is disposed without leaving a significant clearance is formed by the frame body, the first facing plate and the proximal portion of the second facing plate, and a second spacing portion wedge-like in cross section in which the proximal portion of the transparent substrate is disposed without leaving a significant clearance is formed between the first facing plate and the distal end portion of the second facing plate.