公开(公告)号：US5469303A

公开(公告)日：1995-11-21

申请号：US254942

申请日：1994-06-07

Applicant: Jeffrey Wun ,  Ting Shia ,  Fang-Merng Guo

Inventor： Jeffrey Wun ,  Ting Shia ,  Fang-Merng Guo

IPC: F21V7/00 ,  F21V7/18 ,  F21V17/00 ,  G02B27/00

CPC classification number: F21V7/18 ,  F21V17/00 ,  F21V7/005

Abstract: An improvement of brightness compensation for a lamp shade in an optical scanner includes a plurality of projections to make a reflector in the lamp shade to form a greater curvature on its lateral sides, thus increase the light-condensing capability of the reflector, and thereby improve brilliance uniformity of a lamp tube.

Abstract translation: 光学扫描器中的灯罩的亮度补偿的改进包括多个突起，以使灯罩中的反射器在其侧面上形成更大的曲率，从而提高反射器的聚光能力，从而提高 灯管的辉度均匀性。