| 摘要 |
PURPOSE:To improve the accuracy in the converging position of a fluorescent lamp and to output correct and stable picture information by improving a positioning accuracy in the set position of a mirror with respect to the slit opening part of a lamp housing. CONSTITUTION:A holder attaching part for attaching to a mirror holder 43 is horizontally protruded in the side part of both the longitudinal end parts of the lamp housing 41, attaching holes 41a, 41b are disposed. The attaching holder 43 has a detaining part opposite to the attaching face of the holder of the housing 41, tapped holes 43a, 43b are bored in this detaining part and a protruding part 43c is disposed in the upper part of the vicinity of a central part. In this case, the width of the protruding part 43c is formed slightly smaller than the slit width of the opening part 41c so as to have a slight allowance to generate no trouble at the time of fitting the engaging part 41d of the slit opening part 41c into the protruding part 43c. Thereby, the light figure of an original is efficiently focussed on a first mirror to improve the converging position accuracy of the fluorescent lamp, output the correct and stable picture information and shorten the number of the processes of assembling.
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