| 摘要 |
PURPOSE:To obtain a light source device for scanning having thin thickness and high luminous intensity, where uneven luminous intensity due to vibration of a heater wire and a damper wire is suppresse, by supporting the heater wire with the damper wire. CONSTITUTION:A heater 6a at the left is supported by a damper wire 7a placed down left and a heater wire 6b at the right side is supported by a damper wire 7b placed down right. The supporting points of the wires 6a, 6b by the wires 7a, 7b are shifted respectively by 1/2 of the support interval. Thus, the distribution of illuminance on a face of an original 8 illuminated by the luminous flux generated from both fluorescent materials 5a, 5b is made almost uniform by the complementary action of the both. Then, various defects due to the vibration of the heater wires are avoided and the light device having thin thickness and high efficiency where no unevenness in illuminance exists practically and the distance between the heater wires and the fluorescent faces is reduced, is obtained. |
