| 摘要 |
PURPOSE:To eliminate the variance of irradiated light in a direction perpendicular to an array direction by cutting off light from a light emitting element into rectangular irradiated light by a light shield member and irradiating an image carrier with the light through a lens member, and fixing respective light emitting elements on the same substrate in one body. CONSTITUTION:The luminous flux emitted by a light emitting chip 15 is cut off the light shield member 13 and irradiated in a rectangular shape from only an opening part 22 and this irradiated luminous flux is reduced in divergence angle theta by the lens 14 to illuminate the image carrier 6 rectangularly as irradiated light which has parallel linear edges in the array direction of the light emitting chip 15. The side wall part 20 of the light shield member 13 is present between light emitting chips 15 and 15, so light from one light emitting chip 15 never leaks to the adjacent light shield member 13 to enter a lens member 14 corresponding to the adjacent light emitting chip 15. |
