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US 2014/0125921 A1Published application
Resin sheet producing method, optical member produced by resin sheet producing method, area light source device in which optical member is used, liquid crystal display device, and mobile device
AssigneeOMRON Corporation
InventorsKoichi Takemura, Gouo Kurata, Yoshihisa Yamanaka, Masayuki Kojima, Morihisa Ota
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Abstract
An area light source device has a transfer-molded optical member, and a light source disposed in a position facing at least one of end faces of the optical member. Light incident to the optical member from the light source is output through a light exit surface of the optical member. A cutting back clearance portion is provided in at least one of corner portions of the end face of the optical member.
Claims20
A resin sheet producing method comprising:
- cutting an end face of a transfer-molded resin sheet with a cutting part,
- wherein the end face is cut with the cutting part that moves toward a cutting back clearance portion provided in a corner portion of the end face.
An optical member comprising:
- a transfer-molded resin sheet having an end face that is cut with a cutting part,
- wherein the end face is cut with the cutting part that moves toward a cutting back clearance portion provided in a corner portion of the end face.
An area light source device comprising
- a transfer-molded optical member;
- and
- a light source disposed in a position facing at least one of end faces of the optical member,
- wherein light incident to the optical member from the light source is output through a light exit surface of the optical member, and
- wherein a cutting back clearance portion is provided in at least one of corner portions of the end face of the optical member.
2 more elements
Dependencies are inferred from the claim text.