| 摘要 |
In a rod lens array having a structure in which a plurality of rod lens elements are arranged between two side panels and a resin is filled and cured in spaces between the rod lens elements to be integrally formed, the side panels are made of a glass fiber reinforced epoxy resin and a phenol-based curing agent is used as a curing agent of the epoxy resin. In detail, the curing agent is exemplified by a phenol-based curing agent including a tris-hydroxyphenyl-methane skeleton.
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